Medium steel powder press forming device

Abstract

The utility model provides a kind of middle steel powder press forming device, including upper press, flange plate, stud, main guide column, the upper press top surface is fixedly connected with flange plate, the flange plate bottom surface four corners are fixedly connected with stud. The utility model has the advantages that: using the double-guide structure of main guide column and vice guide column collaborative work, main guide column (outer guide) provides coarse positioning, vice guide column (inner guide) realizes the accurate alignment of mold core and die head, ensure the coaxiality of mould system in the process of pressurization;Wavy edge buffer: set wavy PU buffer on the top of guide bush, by multidirectional deformation absorption impact energy, significantly reduce the elastic vibration of pressurization instant;Inner and outer double-guide mechanism makes the overall guide precision to improve more than 40%, avoid the eccentric load problem of single-guide structure;Compared with flat rubber pad, energy absorption efficiency of wavy PU buffer improves 35%, and elastic aftereffect is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of steel powder pressure molding technology, and in particular to a medium steel powder pressure molding device. Background Technology

[0002] In metal powder molding processes, the guiding accuracy of the pressurizing device directly affects the dimensional stability of the molded parts. Traditional devices often employ a single guide post structure, which is prone to mold misalignment due to uneven loading under high pressure, resulting in uneven product density or dimensional deviations. Furthermore, the rigid impact during pressurization can trigger elastic aftereffects in the mold, causing material rebound after molding and affecting demolding quality. Existing buffer structures are mostly flat rubber pads, which have low energy absorption efficiency, and the clearance between the guide post and guide sleeve is difficult to balance in terms of both accuracy and durability. Therefore, there is an urgent need for a pressurizing molding device that combines high guiding accuracy and buffering performance. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0004] Therefore, one objective of this utility model is to provide a medium steel powder pressure molding device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of the present invention provides a medium steel powder pressure forming device, including an upper press, a flange, a column head, and a main directional column. The flange is fixedly connected to the top surface of the upper press, and the column head is fixedly connected to the four corners of the bottom surface of the flange. The bottom of the column head is fixedly connected to a main directional column, and the column head contacts the top surface of the buffer when it descends to the position. A lower pressure tool is provided below the upper pressure tool. Guide sleeves are fixedly connected to the four corners of the top surface of the lower pressure tool. The guide sleeves can be movably connected to the main guide column. A buffer is fixedly connected to the top opening of the guide sleeve. The edge of the buffer is wavy. A mold core is fixedly connected to the middle of the top surface of the lower presser, and a cavity is opened at the center of the top surface of the mold core; The mold core has guide holes at the four corners of its top surface. The upper mold is fixedly connected to the bottom of the upper press. The upper mold has auxiliary guide posts fixedly connected to the four corners of its corners. The auxiliary guide posts can be movably connected to the guide holes. A mold head that can enter the cavity is fixedly connected to the center of the upper mold.

[0006] Preferably, in any of the above embodiments, the upper pressure fixture is welded to the flange, and a ring of circular holes is formed at the edge of the flange.

[0007] The above technical solution is adopted: internal and external dual guide mechanism: adopts a dual guide structure in which the main guide column and the secondary guide column work together. The main guide column (external guide) provides coarse positioning, and the secondary guide column (internal guide) realizes the precise alignment of the mold core and the mold head, ensuring the coaxiality of the mold system during the pressurization process; Wave-shaped edge buffer: A wave-shaped PU buffer is set on the top of the guide sleeve, which absorbs impact energy through multi-directional deformation and significantly reduces elastic vibration during pressurization. Interference fit guide sleeve: The guide sleeve and the main guide column adopt an interference fit, which not only ensures the guiding accuracy but also reduces wear. The difference in diameter of the matching column head forms a double limit.

[0008] Preferably, in any of the above embodiments, the flange is located at the center of the top surface of the upper pressure vessel, and the diameter of the column head is larger than the diameter of the main directional column.

[0009] Preferably, in any of the above solutions, the guide sleeve is interference-fitted with the main guide post, and the buffer is made of PU.

[0010] Upper Press Mechanism: The upper press is fixed to a flange by welding. Column heads are welded to the four corners of the flange, and the bottom of the column heads is connected to the main guide column. Round holes on the edge of the flange are used to connect to an external press. The upper mold is installed at the bottom of the upper press, with auxiliary guide columns at its four corners and a mold head that can be inserted into the cavity fixed in the center.

[0011] Lower Mechanism: Guide sleeves are installed at the four corners of the lower presser. The inner wall of the guide sleeve is interference-fitted with the main guide post. The top is fixed with a wavy edge PU buffer by screws. A cavity is opened in the center of the mold core, and the four corner guide holes are clearance-fitted with the secondary guide posts.

[0012] In the initial state, the main guide post is inserted into the guide sleeve, and the secondary guide post is suspended above the guide hole; After pressurization and startup, the main guide column contacts the buffer first, and the wave edge undergoes multi-directional elastic deformation, absorbing 60%-70% of the impact energy; When the column head contacts the buffer component, the secondary guide column is simultaneously inserted into the guide hole, and the mold position deviation is corrected through the synergistic effect of the inner and outer guide columns; The die head enters the cavity to complete the steel powder pressing, and the double guide structure ensures that the concentricity error between the die head and the cavity is ≤0.05mm; After depressurization, the elastic restoring force of the buffer helps the main steering column to quickly reset, reducing the risk of powder adhesion.

[0013] Preferably, in any of the above solutions, the buffer component and the guide sleeve are connected by screws or riveting, and the guide hole matches the secondary guide post one by one.

[0014] The internal and external dual-guide mechanism improves the overall guiding accuracy by more than 40% and avoids the off-center loading problem of the single-guide structure; Compared to flat rubber pads, wavy PU cushioning components have 35% higher energy absorption efficiency and significantly reduced elastic aftereffects. Preferably, in any of the above solutions, the upper mold and the mold head are connected by a flange or screws.

[0015] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: This steel powder pressurization molding device employs a dual-guide structure with the coordinated arrangement of an upper press, a column head, a main guide column, a lower press, a guide sleeve, a buffer component, a mold core, a cavity, guide holes, a secondary guide column, and a mold head. The main guide column (outer guide) provides coarse positioning, while the secondary guide column (inner guide) ensures precise alignment between the mold core and the mold head, guaranteeing the coaxiality of the mold system during pressurization. A wave-shaped PU buffer is placed on the top of the guide sleeve, absorbing impact energy through multi-directional deformation and significantly reducing elastic vibration during pressurization. The dual-guide mechanism improves overall guiding accuracy by over 40%, avoiding the off-center loading problem of a single-guide structure. Compared to a flat rubber pad, the wave-shaped PU buffer increases energy absorption efficiency by 35% and significantly reduces elastic aftereffects.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0018] In the diagram: 1-Upper press, 2-Flange, 3-Column head, 4-Main guide column, 5-Lower press, 6-Guide sleeve, 7-Buffer, 8-Mold core, 9-Cavity, 10-Guide hole, 11-Upper mold, 12-Secondary guide column, 13-Mold head. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 1-4 As shown, the steel powder pressure forming device includes an upper press 1, a flange 2, a column head 3, and a main directional column 4. The flange 2 is fixedly connected to the top surface of the upper press 1, and the column head 3 is fixedly connected to the four corners of the bottom surface of the flange 2. The bottom of the column head 3 is fixedly connected to the main directional column 4, and the column head 3 contacts the top surface of the buffer 7 when it descends to the position. A lower pressure tool 5 is provided below the upper pressure tool 1. Guide sleeves 6 are fixedly connected to the four corners of the top surface of the lower pressure tool 5. The guide sleeves 6 can be movably connected to the main guide column 4. A buffer 7 is fixedly connected to the top opening of the guide sleeve 6. The edge of the buffer 7 is wavy. A mold core 8 is fixedly connected to the middle of the top surface of the lower presser 5, and a cavity 9 is opened at the center of the top surface of the mold core 8; Guide holes 10 are provided at the four corners of the top surface of the mold core 8. The bottom of the upper mold 1 is fixedly connected to the upper mold 11. The four corners of the upper mold 11 are fixedly connected to the secondary guide posts 12. The secondary guide posts 12 can be movably connected to the guide holes 10. A mold head 13 that can enter the cavity 9 is fixedly connected to the center of the upper mold 11.

[0022] Example 1: The upper pressure fixture 1 is welded to the flange 2, and a ring of circular holes is formed at the edge of the flange 2. Interference fit guide sleeve: The guide sleeve 6 and the main guide post 4 are interference fit, ensuring guiding accuracy and reducing wear. The difference in diameter of the matching post heads forms a double limiting mechanism. The flange 2 is located at the center of the top surface of the upper pressure fixture 1, and the diameter of the post head 3 is larger than the diameter of the main guide post 4. The guide sleeve 6 and the main guide post 4 are interference fit, and the buffer 7 is made of PU.

[0023] Example 2: This device consists of two parts: an upper pressing mechanism and an upper press. The upper press 1 is fixed to a flange 2 by welding. Column heads 3 are welded to the four corners of the flange, and the bottom of the column heads is connected to the main guide column 4. The round holes on the edge of the flange are used to connect to an external press. An upper mold 11 is installed at the bottom of the upper press, with auxiliary guide columns 12 at its four corners, and a mold head 13 that can be inserted into the cavity 9 is fixed in the center.

[0024] Lower Mechanism: The lower presser 5 has guide sleeves 6 at its four corners. The inner walls of the guide sleeves are interference-fitted with the main guide posts 4. A wavy-edged PU buffer 7 is fixed to the top with screws. The mold core 8 has a cavity 9 in its center, and the four corner guide holes 10 are clearance-fitted with the secondary guide posts 12. The buffer 7 is connected to the guide sleeves 6 with screws or riveting, and the guide holes 10 are matched one-to-one with the secondary guide posts 12. The upper mold 11 is connected to the mold head 13 via flanges or screws.

[0025] The working principle of this utility model is as follows: In the initial state, the main guide post 4 is inserted into the guide sleeve 6, and the secondary guide post 12 is suspended above the guide hole 10; After pressurization and startup, the main guide column 4 is the first to contact the buffer 7, and the wave edge undergoes multi-directional elastic deformation, absorbing 60%-70% of the impact energy; When the column head 3 contacts the buffer, the secondary guide column 12 is simultaneously inserted into the guide hole 10, and the mold position deviation is corrected through the synergistic effect of the inner and outer guide columns. The die head 13 enters the cavity 9 to complete the steel powder pressing. The double guide structure ensures that the concentricity error between the die head and the cavity is ≤0.05mm. After depressurization, the elastic restoring force of the buffer helps the main steering column to quickly reset, reducing the risk of powder adhesion.

[0026] Compared with the prior art, the present invention has the following advantages: This steel powder pressurization molding device, through the coordinated arrangement of upper press 1, column head 3, main guide column 4, lower press 5, guide sleeve 6, buffer 7, mold core 8, cavity 9, guide hole 10, secondary guide column 12, and mold head 13, adopts a dual-guide structure with the main guide column 3 and secondary guide column 12 working in tandem. The main guide column 3 (outer guide) provides coarse positioning, while the secondary guide column 12 (inner guide) achieves precise alignment between the mold core 8 and the mold head 13, ensuring the coaxiality of the mold system during pressurization. The wavy edge buffer 7: A wavy PU buffer 7 is set on the top of the guide sleeve 6, which absorbs impact energy through multi-directional deformation, significantly reducing elastic vibration during pressurization. The inner and outer dual-guide mechanism improves the overall guiding accuracy by more than 40%, avoiding the off-center loading problem of a single guide structure. Compared with a flat rubber pad, the wavy PU buffer has a 35% higher energy absorption efficiency and a significantly reduced elastic aftereffect.

Claims

1. A medium steel powder pressure molding device, characterized in that, Includes an upper pressure fixture (1), a flange (2), a column head (3), and a main directional column (4). The upper pressure fixture (1) is fixedly connected to the top surface of the flange (2), and the column head (3) is fixedly connected to the four corners of the bottom surface of the flange (2). The bottom of the column head (3) is fixedly connected to the main directional column (4), and the column head (3) contacts the top surface of the buffer (7) when it descends to the position; A lower pressure tool (5) is provided below the upper pressure tool (1). Guide sleeves (6) are fixedly connected to the four corners of the top surface of the lower pressure tool (5). The guide sleeves (6) can be movably connected to the main guide column (4). A buffer (7) is fixedly connected to the top opening of the guide sleeve (6). The edge of the buffer (7) is wavy. The lower presser (5) has a mold core (8) fixedly connected to the middle of its top surface, and a cavity (9) is opened at the center of the top surface of the mold core (8). The mold core (8) has guide holes (10) at the four corners of its top surface. The upper mold (11) is fixedly connected to the bottom of the upper press (1). The upper mold (11) has auxiliary guide posts (12) fixedly connected to the four corners of its four corners. The auxiliary guide posts (12) can be movably connected to the guide holes (10). The upper mold (11) is fixedly connected to a mold head (13) that can enter the cavity (9) at its center.

2. The medium steel powder pressure molding device as described in claim 1, characterized in that: The upper pressure fixture (1) is welded to the flange (2), and a ring of round holes is opened at the edge of the flange (2).

3. The medium steel powder pressure molding device as described in claim 2, characterized in that: The flange (2) is located at the center of the top surface of the upper pressure plate (1), and the diameter of the column head (3) is greater than the diameter of the main directional column (4).

4. The medium steel powder pressure molding device as described in claim 3, characterized in that: The guide sleeve (6) is interference-fitted with the main guide post (4), and the buffer (7) is made of PU.

5. The medium steel powder pressure molding device as described in claim 4, characterized in that: The buffer (7) and the guide sleeve (6) are connected by screws or riveting, and the guide hole (10) is matched with the secondary guide post (12).

6. The medium steel powder pressure molding device as described in claim 5, characterized in that: The upper mold (11) and the mold head (13) are connected by a flange or screws.

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