Powder metallurgy part with inclined inner hole

Abstract

The utility model discloses a powder metallurgy part with an inclined inner hole, which belongs to the technical field of powder metallurgy parts and comprises an upper forming die and a lower forming die, the middle of the upper forming die and the middle of the lower forming die are provided with vertically through inner holes, and the upper end of the upper forming die and the upper end of the lower forming die are evenly provided with a plurality of groups of through holes close to the outer portions of the inner holes. Two sets of heat dissipation plates are arranged at the upper ends and the lower ends of the multiple sets of through holes, and a compression resisting assembly is arranged between the two sets of heat dissipation plates. Therefore, through the arrangement of the through holes, the heat dissipation plates and the compression-resistant assemblies, heat generated at the connecting position of the metallurgical parts enters the heat dissipation channels through the inner holes and then enters the through holes through the heat dissipation channels, the heat of the through holes is collected and dissipated through the heat dissipation holes formed in the heat dissipation plates, the compression-resistant assemblies are arranged between the heat dissipation plates, and therefore the heat dissipation effect of the metallurgical parts is improved. The anti-pressure capability of the metallurgical part can be improved, and meanwhile, the pressure of the outside on the heat dissipation plate through extrusion is reduced.

Description

Technical Field

[0001] The utility model relates to a powder metallurgy part, in particular to a powder metallurgy part with an inclined inner hole, belonging to the technical field of powder metallurgy parts. Background Art

[0002] Powder metallurgy parts refer to mechanical parts made by powder metallurgy, also known as sintered mechanical parts. By the 1970s, sintered mechanical parts had been produced on a large scale and were widely used in agricultural machinery, automobiles, machine tools, instruments, textiles, light industry and other industrial sectors. Mechanical parts made by powder metallurgy are also known as sintered mechanical parts. They usually include mechanical structural parts, oil-containing bearings and friction parts; in a narrow sense, they refer to structural parts. The first sintered mechanical parts to appear were sintered metal oil-containing bearings.

[0003] After searching, the patent with application number CN201110286854.7 discloses a powder metallurgy part with an inner hole and a parting surface at an inclined angle and a mold structure thereof. The structure is reasonable, and the part body is formed by powder metallurgy at one time to produce an irregular powder metallurgy part with a vertical inner hole, and the upper and lower surfaces and the side surfaces are at an angle to each other. The part has good chemical, mechanical and physical properties of the powder metallurgy process and high dimensional accuracy. However, when the existing powder metallurgy parts are processed and used, when they are connected with other industrial machinery parts, long-term work will generate a lot of heat at the connection, reducing the service life of the powder metallurgy parts. Therefore, improvements are now made to a powder metallurgy part with an inclined inner hole. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a powder metallurgy part with an inclined inner hole. When the powder metallurgy part is connected with other industrial machinery parts, heat is dissipated through the powder metallurgy part itself, while reducing the pressure on the heat dissipation plate caused by external extrusion, thereby solving the technical problem in the prior art that heat is not easy to dissipate when connected with other industrial machinery parts for a long time.

[0005] In order to solve the above problems, the following technical solutions are provided:

[0006] A powder metallurgy part with an inclined inner hole is designed, comprising a molding upper die and a molding lower die, wherein an inner hole that passes through the upper and lower parts is opened in the middle of the molding upper die and the molding lower die, and multiple groups of through holes are evenly opened on the upper ends of the molding upper die and the molding lower die near the outside of the inner hole, and two groups of heat dissipation plates are arranged at the upper and lower ends of the multiple groups of through holes, and a pressure-resistant component is arranged between the two groups of heat dissipation plates.

[0007] Furthermore, the pressure-resistant component includes a spring, the top of the spring is fixedly connected to a first pressing plate, the top of the first pressing plate is fixedly installed with a first piston, the bottom of the spring is fixedly connected to a second pressing plate, and the bottom of the second pressing plate is fixedly installed with a second piston.

[0008] Furthermore, a plurality of heat dissipation holes are evenly opened on the heat dissipation plate and penetrate through the upper and lower parts, and a dustproof film is fixedly bonded to the bottom of the heat dissipation plate.

[0009] Furthermore, the inner hole is at an inclined angle, and heat dissipation channels are horizontally opened at the middle positions of both sides of the inner wall of the inner hole.

[0010] Furthermore, an external thread is provided on the outer side of the heat sink, and an internal thread is provided on the inner wall of the through hole near the upper end of the through hole, and the heat sink is spirally installed inside the through hole through the external thread and the internal thread.

[0011] Furthermore, the first piston and the second piston are in contact with the dustproof film.

[0012] Furthermore, one end of the heat dissipation channel is connected to the interior of the inner hole, and the other end of the heat dissipation channel is connected to the interior of the through hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model arranges through holes, heat dissipation plates and pressure-resistant components, so that the heat generated at the connection of metallurgical parts can pass through the inner hole to the heat dissipation channel, and then enters the through hole through the heat dissipation channel. The heat of the through hole is collected and dissipated by the heat dissipation holes opened on the heat dissipation plate, so as to avoid the problem that the heat cannot be dissipated and the service life is affected. The pressure-resistant components are arranged between the heat dissipation plates, which can increase the pressure resistance of the metallurgical parts and reduce the pressure on the heat dissipation plates caused by external extrusion.

[0015] With reference to the following description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a powder metallurgy part with an inclined inner hole according to the utility model;

[0018] Figure 2It is a schematic diagram of the overall internal structure of a preferred embodiment of a powder metallurgy part with an inclined inner hole according to the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of a compression-resistant component of a preferred embodiment of a powder metallurgy part with an inclined inner hole according to the utility model;

[0020] Figure 4 The figure is a schematic diagram of the heat sink installation structure of a preferred embodiment of a powder metallurgy part with an inclined inner hole according to the utility model.

[0021] In the figure: 1. molding upper mold; 2. molding lower mold; 3. inner hole; 4. through hole; 5. heat sink; 6. pressure-resistant component; 61. spring; 62. first pressing plate; 63. first piston; 64. second pressing plate; 65. second piston; 7. heat dissipation hole; 8. dust-proof film; 9. heat dissipation channel; 10. external thread; 11. internal thread. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 - Figure 4 As shown, this embodiment provides a powder metallurgy part with an inclined inner hole, wherein Figure 1 - Figure 2 As shown, it includes a forming upper die 1 and a forming lower die 2, an inner hole 3 penetrating from top to bottom is opened in the middle of the forming upper die 1 and the forming lower die 2, a plurality of through holes 4 are evenly opened on the upper ends of the forming upper die 1 and the forming lower die 2 near the outer side of the inner hole 3, two groups of heat dissipation plates 5 are arranged at the upper and lower ends of the plurality of through holes 4, and the arrangement of the heat dissipation plates 5 can dissipate the heat generated at the connection of the metallurgical parts, the inner hole 3 is inclined, and a heat dissipation channel 9 is horizontally opened in the middle of both sides of the inner wall of the inner hole 3, and since one end of the heat dissipation channel 9 is connected to the inside of the inner hole 3, the heat dissipation channel 9 The other end is connected with the inside of the through hole 4, so that the heat generated at the connection of the metallurgical parts passes through the inner hole 3 to the heat dissipation channel 9, and then enters the inside of the through hole 4 from the heat dissipation channel 9. A plurality of heat dissipation holes 7 penetrating up and down are evenly opened on the heat dissipation plate 5. The heat collected by the through hole 4 is dissipated by the heat dissipation holes 7 opened on the heat dissipation plate 5. A dustproof film 8 is fixedly bonded to the bottom of the heat dissipation plate 5. The function of the dustproof film 8 is to prevent external dust from entering the through hole 4, blocking the through hole 4 and the heat dissipation channel 9, reducing the heat dissipation effect, and extending the service life of the metallurgical parts.

[0024] like Figure 3 - Figure 4As shown, a pressure-resistant component 6 is arranged between the two groups of heat dissipation plates 5, an external thread 10 is arranged on the outer side of the heat dissipation plate 5, and an internal thread 11 is arranged on the inner wall of the through hole 4 near the upper end of the through hole 4, so that the heat dissipation plate 5 is screwed into the inside of the through hole 4 through the external thread 10 and the internal thread 11, and then the pressure-resistant component 6 is put into the inside of the through hole 4, and the pressure-resistant component 6 includes a spring 61, and then another heat dissipation plate 5 is screwed into the inside of the through hole 4 near the upper end position of the through hole 4, and the top of the spring 61 is fixedly connected to a first pressing plate 62, and the top of the first pressing plate 62 is fixedly installed with a first movable Plug 63, the bottom of the spring 61 is fixedly connected with a second pressing plate 64, and the bottom of the second pressing plate 64 is fixedly installed with a second piston 65, so that the dust-proof film 8 of the heat sink 5 abuts against the first piston 63 and the second piston 65, and the first piston 63 and the second piston 65 drive the first pressing plate 62 and the second pressing plate 64 to move inside the through hole 4, and then the spring 61 fixedly connected between the first pressing plate 62 and the second pressing plate 64 is in a compressed state, which increases the compressive resistance of metallurgical parts and reduces the pressure on the heat sink 5 caused by external extrusion.

[0025] The use principle and use process of this utility model:

[0026] After the powder metallurgy parts are processed, multiple groups of through holes 4 are evenly opened near the outer side of the inner hole 3 through the upper ends of the forming upper mold 1 and the forming lower mold 2. Two groups of heat dissipation plates 5 are arranged at the upper and lower ends of the multiple groups of through holes 4. The arrangement of the heat dissipation plates 5 can dissipate the heat generated at the connection of the metallurgical parts. Since the inner side of the inner hole 3 is connected to the heat dissipation channel 9, and the other end of the heat dissipation channel 9 is connected to the through hole 4, the heat generated at the connection of the metallurgical parts passes through the inner hole 3 into the heat dissipation channel 9, and then enters the inside of the through hole 4 through the heat dissipation channel 9. The heat collected from the through hole 4 is dissipated by the heat dissipation holes 7 opened on the heat dissipation plate 5. A dustproof film 8 is fixedly bonded to the bottom of the heat dissipation plate 5. The function of the dustproof film 8 is to prevent external dust from entering the through hole 4, so that the through hole 4 and the heat dissipation channel 9 are blocked, thereby reducing the heat dissipation. The heat effect prolongs the service life of metallurgical parts. A pressure-resistant component 6 is arranged between the two groups of heat sinks 5, so that the heat sink 5 is spirally installed at the bottom of the through hole 4 through the external thread 10 and the internal thread 11, and then the pressure-resistant component 6 is put into the through hole 4, and then another heat sink 5 is spirally installed in the through hole 4 near the upper end position of the through hole 4, so that the dust-proof film 8 of the heat sink 5 is in contact with the first piston 63 and the second piston 65, and the first piston 63 and the second piston 65 drive the first pressing plate 62 and the second pressing plate 64 to move inside the through hole 4, and then the spring 61 fixedly connected between the first pressing plate 62 and the second pressing plate 64 is in a compressed state, which increases the pressure resistance of metallurgical parts and reduces the pressure on the heat sink 5 caused by external extrusion.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] The present invention is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on the spirit and principles of the present invention, and these modifications and variations are also within the scope of the present invention.

Claims

1. A powder metallurgy part with an inclined inner hole, characterized in that: The invention comprises an upper molding die (1) and a lower molding die (2), wherein an inner hole (3) penetrating from top to bottom is provided in the middle of the upper molding die (1) and the lower molding die (2), and multiple groups of through holes (4) are evenly provided at the upper ends of the upper molding die (1) and the lower molding die (2) near the outer sides of the inner hole (3), and two groups of heat dissipation plates (5) are provided at the upper and lower ends of the multiple groups of through holes (4), and a pressure-resistant component (6) is provided between the two groups of heat dissipation plates (5).

2. A powder metallurgy part with an inclined inner hole according to claim 1, characterized in that: The pressure-resistant component (6) comprises a spring (61), the top of the spring (61) is fixedly connected to a first pressing plate (62), the top of the first pressing plate (62) is fixedly mounted with a first piston (63), the bottom of the spring (61) is fixedly connected to a second pressing plate (64), the bottom of the second pressing plate (64) is fixedly mounted with a second piston (65).

3. The powder metallurgy part with inclined inner hole according to claim 1, characterized in that: The heat dissipation plate (5) is evenly provided with a plurality of heat dissipation holes (7) penetrating upward and downward, and a dustproof film (8) is fixedly bonded to the bottom of the heat dissipation plate (5).

4. The powder metallurgy part with inclined inner hole according to claim 1, characterized in that: The inner hole (3) is inclined at an angle, and heat dissipation channels (9) are transversely opened at the middle positions of both sides of the inner wall of the inner hole (3).

5. The powder metallurgy part with inclined inner hole according to claim 1, characterized in that: The heat dissipation plate (5) is provided with an external thread (10) on the outside, and the inner wall of the through hole (4) is provided with an internal thread (11) near the upper end of the through hole (4). The heat dissipation plate (5) is spirally mounted inside the through hole (4) via the external thread (10) and the internal thread (11).

6. The powder metallurgy part with inclined inner hole according to claim 2, characterized in that: The first piston (63) and the second piston (65) are in contact with the dustproof film (8).

7. The powder metallurgy part with inclined inner hole according to claim 4, characterized in that: One end of the heat dissipation channel (9) is connected to the interior of the inner hole (3), and the other end of the heat dissipation channel (9) is connected to the interior of the through hole (4).

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