Raw material pre-pressing and leveling mechanism of stainless steel metal powder metallurgy forming die

Abstract

The utility model relates to the technical field of powder metallurgy, in particular to a raw material pre-pressing and leveling mechanism of a stainless steel metal powder metallurgy forming die, which comprises a support frame fixed on the upper surface of a workbench, and a hydraulic cylinder mounted above the support frame, a linear bearing guide rod, a movable beam, a lower punching block, a first mold, a second mold and a limiting assembly are arranged on the inner side of the supporting frame, an inner cavity is formed in the surface of the workbench, a forming bottom block is fixed to the middle of the inner cavity, and a forming cavity is formed between the first mold and the second mold; the device has the beneficial effects that a split type structure is adopted, after raw materials are formed in the forming cavity, limiting of the two molds is relieved through the limiting assembly, a handle is manually shifted, the first mold and the second mold can be conveniently separated, demolding can be conducted, the demolding process of special-shaped products with the two ends large and the middle small is particularly facilitated, and the demolding efficiency is improved. The working efficiency can be greatly improved, and the waste of materials and the increase of the production cost cannot be caused.

Description

Technical Field

[0001] The utility model relates to the field of powder metallurgy, in particular to a raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder as raw material, and then forms and sinters it to manufacture metal materials, composite materials and various types of products. Powder metallurgy is similar to the production of ceramics, both of which belong to powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used in the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solving new material problems and plays a vital role in the development of new materials.

[0003] In the prior art, during the pressing process of powder metallurgy, some special-shaped products with large ends and small middle cannot be demolded after pressing. The prior art usually requires the use of semi-finished product processing or finished product processing, which results in material waste and increased production costs.

[0004] Therefore, the utility model proposes a raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming mold, the raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming mold comprising: a workbench, a support frame is fixed on the upper surface of the workbench, a hydraulic cylinder is installed above the support frame, a linear bearing guide rod, a moving beam, a lower punch block, a first mold, a second mold and a limit assembly are arranged on the inner side of the support frame, an inner cavity is opened on the surface of the workbench, a forming bottom block is fixed in the middle of the inner cavity, and a forming cavity for accommodating powder raw materials is formed between the first mold and the second mold;

[0007] A vertical plate, the vertical plate is fixed to the workbench by bolts, a first through hole is opened on the surface of the vertical plate, a limiting rod is inserted into the first through hole, a fixing device is fixed on the end surface of the limiting rod, a spring is sleeved on the surface of the limiting rod, one end of the spring is fixedly connected to the fixing device, and the other end of the spring is fixedly connected to the vertical plate, a connecting column is fixed on the surface of the fixing device, and a handle is fixed on the surface of the connecting column;

[0008] The side blocks are fixed on both sides of the inner cavity, and ball sliding grooves are arranged inside the side blocks.

[0009] Preferably, a support column is fixed to the lower end of the workbench, and four groups of support columns are provided. The four groups of support columns are respectively located at the four ends of the lower surface of the workbench. The hydraulic cylinder is installed in the middle of the support frame, and the output end of the hydraulic rod passes through the support frame and is fixedly connected to the moving beam.

[0010] Preferably, the linear bearing guide rods are provided with two groups, the two groups of linear bearing guide rods are symmetrically distributed about the hydraulic rod, one end of the linear bearing guide rod is fixedly connected to the support frame, the other end of the linear bearing guide rod is fixedly connected to the workbench, and the linear bearing guide rod and the movable beam are slidably connected.

[0011] Preferably, a lower punch block is fixed on the lower surface of the movable beam, and the lower punch block is located directly above the forming cavity.

[0012] Preferably, the limiting assembly includes a vertical plate, a limiting rod, a spring, a fixing member, a connecting rod and a handle. The limiting rods are provided in four groups, and the four groups of limiting rods are respectively located on both sides of the first mold and the second mold. The surface of the handle is provided with anti-slip patterns.

[0013] Preferably, handles are fixed on the surfaces of the first mold and the second mold, movable balls are installed on both sides of the first mold and the second mold, the movable balls and the ball slide grooves are adapted to each other, a sealing block is fixed on the surface of the first mold, and a sealing cavity is opened on the surface of the second mold, and the sealing block can be embedded in the sealing cavity.

[0014] Preferably, side connecting blocks are fixed on both sides of the first mold and the second mold. The side connecting blocks are cylindrical, and a limiting hole is provided on the surface of the side connecting blocks. The limiting rod can be inserted into the limiting hole. The outer walls of the first mold and the second mold are slidably connected to the inner wall of the inner cavity.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The raw material pre-pressing and leveling mechanism of the stainless steel metal powder metallurgy forming die proposed by the utility model adopts a split structure, and the lower punch is driven by a hydraulic cylinder to press the raw material in the forming cavity formed by the first die and the second die to realize the pre-pressing and leveling of the raw material. After the raw material is formed in the forming cavity, the two dies are released from the limit by the limit component, and then the handle is manually turned to facilitate the separation of the first die and the second die, and demolding can be performed, which is particularly beneficial to the demolding process of special-shaped products with large ends and small middle. It can greatly improve work efficiency and will not cause waste of materials and increase of production costs. At the same time, auxiliary structures such as limit components and ball slides are used to ensure the accuracy and stability of mold movements, effectively improving the quality and production efficiency of powder metallurgy products. This avoids the problem in the prior art that in the pressing process of powder metallurgy, some special-shaped products with large ends and small middle cannot be demolded after pressing is completed. The prior art usually requires the use of semi-finished product processing or finished product processing, which causes waste of materials and increase of production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a detailed diagram of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first mold and the second mold of the utility model;

[0020] Figure 4 for Figure 2 A magnified view of the structure in the middle.

[0021] In the figure: 1. hydraulic cylinder; 2. linear bearing guide rod; 3. support frame; 4. workbench; 5. support column; 6. forming cavity; 7. first mold; 8. second mold; 9. handle; 10. limit assembly; 11. lower punch block; 12. movable beam; 13. forming bottom block; 14. inner cavity; 15. side block; 16. ball slide groove; 17. movable ball; 18. sealing block; 19. sealing cavity; 20. side connecting block; 21. limit hole; 22. limit rod; 23. first through hole; 24. vertical plate; 25. fastener; 26. spring; 27. handle; 28. connecting column; 29. ​​anti-slip texture. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-Figure 4 The utility model provides a technical solution: a raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming mold, the raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming mold comprises: a workbench 4, a support frame 3 is fixed on the upper surface of the workbench 4, a hydraulic cylinder 1 is installed above the support frame 3, a linear bearing guide rod 2, a moving beam 12, a lower punch 11, a first mold 7, a second mold 8 and a limit assembly 10 are arranged on the inner side of the support frame 3, an inner cavity 14 is opened on the surface of the workbench 4, a forming bottom block 13 is fixed in the middle of the inner cavity 14, and a forming cavity 6 for accommodating powder raw materials is formed between the first mold 7 and the second mold 8;

[0025] A vertical plate 24, which is fixed to the workbench 4 by bolts, a first through hole 23 is provided on the surface of the vertical plate 24, a limiting rod 22 is inserted into the first through hole 23, a fixing device 25 is fixed to the end surface of the limiting rod 22, a spring 26 is sleeved on the surface of the limiting rod 22, one end of the spring 26 is fixedly connected to the fixing device 25, and the other end of the spring 26 is fixedly connected to the vertical plate 24, a connecting column 28 is fixed to the surface of the fixing device 25, and a handle 27 is fixed to the surface of the connecting column 28, and a side block 15, which is fixed to both sides of the inner cavity 14, and a ball bearing slide groove 16 is provided inside the side block 15;

[0026] When in use, the stainless steel metal powder to be pressed is evenly filled in the forming cavity 6 between the first mold 7 and the second mold 8, the hydraulic cylinder 1 is started, and the hydraulic rod pushes the moving beam 12 to move downward smoothly along the linear bearing guide rod 2, and the lower punch block 11 fixed on the lower surface of the moving beam 12 moves downward accordingly, and the powder raw material in the forming cavity 6 is pre-pressed and leveled, so that it can evenly and densely fill the forming cavity 6 to prepare for the subsequent forming process. When the forming is completed, the limit rod 22 is pulled out of the limit hole 21 and held by manually turning the handle 27, and the handle 9 is manually turned to separate the first mold 7 and the second mold 8, and demolding can be performed.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, the limiting assembly 10 includes a vertical plate 24, a limiting rod 22, a spring 26, a fixing member 25, a connecting rod and a handle 27. The limiting rod 22 is provided with four groups, and the four groups of limiting rods 22 are respectively located on both sides of the first mold 7 and the second mold 8. The surface of the handle 27 is provided with anti-slip lines 29;

[0029] A handle 9 is fixed on the surface of the first mold 7 and the second mold 8, and movable balls 17 are installed on both sides of the first mold 7 and the second mold 8. The movable balls 17 are matched with the ball slide grooves 16. A sealing block 18 is fixed on the surface of the first mold 7, and a sealing cavity 19 is opened on the surface of the second mold 8. The sealing block 18 can be embedded in the sealing cavity 19;

[0030] Side connecting blocks 20 are fixed on both sides of the first mold 7 and the second mold 8. The side connecting blocks 20 are cylindrical. A limiting hole 21 is provided on the surface of the side connecting blocks 20. The limiting rod 22 can be inserted into the limiting hole 21. The outer walls of the first mold 7 and the second mold 8 are slidably connected to the inner wall of the inner cavity 14.

[0031] During use, after demoulding is completed, the first mold 7 and the second mold 8 are installed, and the limit rod 22 is pulled into the first through hole 23 and maintained by toggling the handle 27, and the two molds are moved by the handle 9, so that the movable ball 17 moves into the ball slide groove 16 accordingly, and the guiding and supporting functions are realized. The provided sealing block 18 is correspondingly embedded in the sealing cavity 19 to achieve the close contact between the first mold 7 and the second mold 8, and ensure the stable progress of the forming operation. At this time, the handle 27 is released, and under the rebound action of the spring 26, the limit rod 22 is automatically inserted into the limit hole 21 to limit the two molds and avoid shaking of the two molds. The operation is convenient, and the anti-slip groove 29 can increase friction to avoid slipping when the handle 27 is toggled, thereby improving the stability of the operation.

[0032] Embodiment 3

[0033] On the basis of the second embodiment, a support column 5 is fixed at the lower end of the workbench 4, and the support column 5 is provided with four groups, and the four groups of support columns 5 are respectively located at the four ends of the lower surface of the workbench 4, and the hydraulic cylinder 1 is installed in the middle of the support frame 3, and the output end of the hydraulic rod passes through the support frame 3 and is fixedly connected to the moving beam 12;

[0034] There are two groups of linear bearing guide rods 2, which are symmetrically distributed about the hydraulic rod. One end of the linear bearing guide rod 2 is fixedly connected to the support frame 3, and the other end of the linear bearing guide rod 2 is fixedly connected to the workbench 4. The linear bearing guide rod 2 and the moving beam 12 are slidably connected. A lower punch block 11 is fixed on the lower surface of the moving beam 12, and the lower punch block 11 is located directly above the forming cavity 6.

[0035] When in use, the workbench 4 is the foundation of the entire equipment, and a support frame 3 is fixed on its upper surface. A hydraulic cylinder 1 is installed above the support frame 3 as a driving source, which is responsible for providing pressing power. The linear bearing guide rod 2 ensures the smooth linear movement of the moving beam 12. The lower punch 11 is connected to the hydraulic rod output end of the hydraulic cylinder 1 to press the raw material. The vertical plate 24 is fixed to the workbench 4 by bolts, and a retractable limit rod 22 is arranged on it, which cooperates with the spring 26 and the fixture 25 to provide an adjustable limit mechanism to ensure that the first mold 7 and the second mold 8 maintain a stable position during the opening and closing process to avoid displacement. The side blocks 15 are fixed on both sides of the inner cavity 14, and a ball slide groove 16 is provided inside. Movable balls 17 are installed on both sides of the first mold 7 and the second mold 8, which cooperate with the ball slide groove 16 to make the mold opening and closing process smoother and more accurately positioned.

[0036] In actual use, the stainless steel metal powder to be pressed is evenly filled in the forming cavity 6 between the first mold 7 and the second mold 8, the hydraulic cylinder 1 is started, and the hydraulic rod pushes the moving beam 12 to move downward steadily along the linear bearing guide rod 2, and the lower punch 11 fixed on the lower surface of the moving beam 12 moves downward accordingly, and the powder raw material in the forming cavity 6 is pre-pressed and flattened, so that it can evenly and densely fill the forming cavity 6 to prepare for the subsequent forming process. When the forming is completed, the limit rod 22 is pulled out of the limit hole 21 and held by manually turning the handle 27, and the handle 9 is manually turned to separate the first mold 7 and the second mold 8, and demolding can be performed. This avoids the problem in the prior art that in the pressing process of powder metallurgy, some special-shaped products with large ends and small middle cannot be demolded after pressing is completed. The prior art usually requires the use of semi-finished product processing or finished product processing, which causes material waste and increased production costs.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die, characterized in that: The raw material pre-pressing and leveling mechanism of the stainless steel metal powder metallurgy forming die comprises: a workbench (4), a support frame (3) is fixed on the upper surface of the workbench (4), a hydraulic cylinder (1) is installed above the support frame (3), a linear bearing guide rod (2), a moving beam (12), a lower punch (11), a first die (7), a second die (8) and a limit assembly (10) are arranged on the inner side of the support frame (3), an inner cavity (14) is opened on the surface of the workbench (4), a forming bottom block (13) is fixed in the middle of the inner cavity (14), and a forming cavity (6) for accommodating powder raw materials is formed between the first die (7) and the second die (8); A vertical plate (24), the vertical plate (24) is fixed to the workbench (4) by bolts, a first through hole (23) is opened on the surface of the vertical plate (24), a limiting rod (22) is inserted into the first through hole (23), a fixing device (25) is fixed to the end surface of the limiting rod (22), a spring (26) is sleeved on the surface of the limiting rod (22), one end of the spring (26) is fixedly connected to the fixing device (25), the other end of the spring (26) is fixedly connected to the vertical plate (24), a connecting column (28) is fixed to the surface of the fixing device (25), and a handle (27) is fixed to the surface of the connecting column (28); The side blocks (15) are fixed on both sides of the inner cavity (14), and a ball sliding groove (16) is provided inside the side blocks (15).

2. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: A support column (5) is fixed at the lower end of the workbench (4), and the support column (5) is provided with four groups. The four groups of support columns (5) are respectively located at the four ends of the lower surface of the workbench (4). The hydraulic cylinder (1) is installed in the middle of the support frame (3), and the output end of the hydraulic rod passes through the support frame (3) and is fixedly connected to the moving beam (12).

3. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: The linear bearing guide rods (2) are provided with two groups, the two groups of linear bearing guide rods (2) are symmetrically distributed about the hydraulic rod, one end of the linear bearing guide rod (2) is fixedly connected to the support frame (3), the other end of the linear bearing guide rod (2) is fixedly connected to the workbench (4), and the linear bearing guide rod (2) and the moving beam (12) are slidably connected.

4. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: A lower punch block (11) is fixed on the lower surface of the moving beam (12), and the lower punch block (11) is located directly above the forming cavity (6).

5. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: The limiting assembly (10) comprises a vertical plate (24), a limiting rod (22), a spring (26), a fixing member (25), a connecting rod and a handle (27). The limiting rod (22) is provided with four groups, and the four groups of limiting rods (22) are respectively located on both sides of the first mold (7) and the second mold (8). The surface of the handle (27) is provided with anti-slip patterns (29).

6. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: A handle (9) is fixed on the surface of the first mold (7) and the second mold (8), and movable balls (17) are installed on both sides of the first mold (7) and the second mold (8). The movable balls (17) and the ball slide grooves (16) are matched with each other. A sealing block (18) is fixed on the surface of the first mold (7), and a sealing cavity (19) is opened on the surface of the second mold (8), and the sealing block (18) can be embedded in the sealing cavity (19).

7. The raw material pre-pressing and leveling mechanism for a stainless steel metal powder metallurgy forming die according to claim 1, characterized in that: Side connecting blocks (20) are fixed on both sides of the first mold (7) and the second mold (8); the side connecting blocks (20) are cylindrical; a limiting hole (21) is provided on the surface of the side connecting blocks (20); a limiting rod (22) can be inserted into the limiting hole (21); and the outer walls of the first mold (7) and the second mold (8) are slidably connected to the inner wall of the inner cavity (14).

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