Rapid cooling powder metallurgy die

Abstract

The utility model discloses a rapidly-cooled powder metallurgy die, and relates to the technical field of dies. The utility model comprises: a base; the support is fixedly installed on the top of the base, and a die punch is installed on the support; the cooling box is fixedly installed on one side of the base, a water storage frame is fixedly installed on the base, and a pipeline is communicated between the cooling box and the water storage frame. Cooling liquid in the cooling box flows into the water storage frame through the pipeline, the cooling liquid in the water storage frame surrounds the peripheral side of the mold body through the shape of the water storage frame, heat of the mold body is taken away through heat exchange, the stirring assembly stirs the liquid in the water storage frame, the flow speed of the cooling liquid is increased, and therefore the heat exchange efficiency is improved; rapid cooling is achieved, the temperature of the die body is kept uniform and stable, and therefore the size precision and the performance consistency of powder metallurgy parts are improved, and meanwhile the service life of the die body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a fast-cooling powder metallurgy mold. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material, and then forms and sinters it to manufacture metal materials, composite materials and various types of products. Powder metallurgy molds mainly refer to molds used in the processes of metallurgical iron powder pressing, sintering, and post-processing.

[0003] When powder metallurgy forming molds are actually used, a large amount of heat will be generated during the pressing process. The traditional mold cooling method has the problem of slow cooling speed. If the mold cannot be cooled down in time, the mold will be affected by thermal expansion and contraction, which will make it difficult to demold the blank, and even damage the blank product during demolding, affecting product quality. In order to solve the above problems, the utility model provides a fast cooling powder metallurgy mold. Utility Model Content

[0004] The utility model aims to provide a powder metallurgy mold with rapid cooling to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fast-cooling powder metallurgy mold comprises: a base; a bracket, the bracket is fixedly mounted on the top of the base, and a die punch is mounted on the bracket; a cooling box, the cooling box is fixedly mounted on one side of the base, a water storage frame is fixedly mounted on the base, a pipeline is connected between the cooling box and the water storage frame, and an electromagnetic valve is arranged on the pipeline; a mold body, the mold body is mounted on the base, and the water storage frame wraps the outer peripheral side of the mold body; a stirring component, the stirring component is mounted on the water storage frame, and the stirring component is used to stir the liquid in the water storage frame to increase the flow rate.

[0007] Furthermore, the stirring assembly includes a driving motor fixedly mounted on one side of the base, a rotating rod is rotatably mounted between the two sides of the inner wall of the water storage frame, one end of the rotating rod passes through the water storage frame and the base, and extends to the outside of the base to be fixedly connected to the output end of the driving motor, and a stirring plate is fixedly mounted on the outer peripheral side of the rotating rod.

[0008] Furthermore, there are multiple stirring plates, which are distributed in a linear array and fixedly installed on the outer peripheral side of the rotating rod, and the stirring plates are arc-shaped.

[0009] Furthermore, a mounting plate is fixedly mounted on the bottom of the base, a vibration motor is fixedly mounted on the top of the mounting plate, a vibration rod is fixedly mounted on the output end of the vibration motor, and the top end of the vibration rod contacts the bottom of the mold body.

[0010] Furthermore, a support plate is fixedly installed on the bottom of the base, and a shock-absorbing rubber pad is fixedly installed on the bottom of the support plate.

[0011] Furthermore, a collecting box is fixedly mounted on one side of the bracket, a suction pump is fixedly mounted on the top of the collecting box, a connecting pipe is fixedly inserted on the collecting box, and a collecting cover is fixedly mounted on one end of the connecting pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The coolant in the cooling box flows through the pipeline into the water storage frame. The coolant in the water storage frame surrounds the outer peripheral side of the mold body through the shape of the water storage frame, and takes away the heat of the mold body through heat exchange. The stirring component stirs the liquid in the water storage frame to increase the flow rate of the coolant, thereby improving the heat exchange efficiency, achieving rapid cooling, and maintaining the uniform and stable temperature of the mold body, thereby improving the dimensional accuracy and performance consistency of powder metallurgy parts, and also extending the service life of the mold body.

[0014] 2. The vibration motor drives the vibration rod to quickly knock on the bottom of the mold body, causing the mold body to vibrate. At the same time, the powder in the mold body can be evenly dispersed by vibration, and the filling effect is better, avoiding gaps between metal powders and affecting the molding quality. The suction force generated by the suction pump passes through the collection box, connecting pipe and collection cover, and the metal powder remaining on the top surface of the mold body is sucked into the collection box for centralized collection, avoiding residual metal powder on the top surface of the mold body and affecting subsequent product production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This utility model Figure 1 A three-dimensional structural cross-sectional view;

[0017] Figure 3 This utility model Figure 1 Another three-dimensional structural cross-sectional view of ;

[0018] Figure 4 This utility model Figure 1 A schematic diagram of a front plan structure;

[0019] Figure 5 This utility model Figure 1A schematic diagram of a top plan structure;

[0020] Figure 6 This utility model Figure 1 Schematic diagram of the side plan structure.

[0021] In the figure: 1. base; 2. bracket; 3. die punch; 4. cooling box; 5. water storage frame; 6. pipeline; 7. electromagnetic valve; 8. mold body; 9. stirring assembly; 91. drive motor; 92. rotating rod; 93. stirring plate; 10. mounting plate; 11. vibration motor; 12. vibration rod; 13. support plate; 14. shock-absorbing rubber pad; 15. collection box; 16. suction pump; 17. connecting pipe; 18. collection cover. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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. Embodiment 1

[0023] See also Figure 1-6 In an embodiment of the utility model, a fast cooling powder metallurgy mold comprises: a base 1;

[0024] The bracket 2 is fixedly mounted on the top of the base 1, and a die punch 3 is mounted on the bracket 2;

[0025] The cooling box 4 is fixedly mounted on one side of the base 1, and a water storage frame 5 is fixedly mounted on the base 1. A pipe 6 is connected between the cooling box 4 and the water storage frame 5, and an electromagnetic valve 7 is arranged on the pipe 6; the cooling box 4 is filled with coolant. The cooling box 4 is a prior art, such as an external cooling box for machine tools, which is widely used in mechanical equipment such as welding machines and CNC lathes that require water cooling. A return pipe is also arranged between the water storage frame 5 and the cooling box 4, which is used to discharge the heated coolant into the cooling box 4, and an electromagnetic valve 7 is also arranged on the return pipe.

[0026] A mold body 8 is installed on the base 1, and a water storage frame 5 wraps the outer peripheral side of the mold body 8;

[0027] The stirring assembly 9 is installed on the water storage frame 5, and is used to stir the liquid in the water storage frame 5 to increase the flow rate. The stirring assembly 9 includes a driving motor 91 fixedly installed on one side of the base 1, and a rotating rod 92 is rotatably installed between the two sides of the inner wall of the water storage frame 5. One end of the rotating rod 92 penetrates the water storage frame 5 and the base 1, and extends to the outside of the base 1 and is fixedly connected to the output end of the driving motor 91. A stirring plate 93 is fixedly installed on the outer peripheral side of the rotating rod 92.

[0028] First, fill the metal powder into the cavity of the mold body 8, and then press the powder through the die punch 3 on the bracket 2 to form the required part shape. During the pressing process, the mold body 8 will generate a lot of heat due to the friction between the powder and the mold cavity and the compaction between the powder particles. When the temperature of the mold body 8 reaches the preset cooling trigger value, the electromagnetic valve 7 is started to allow the coolant in the cooling box 4 to flow through the pipeline 6 into the water storage frame 5. The coolant in the water storage frame 5 surrounds the outer peripheral side of the mold body 8 due to the shape of the water storage frame 5, and takes away the heat of the mold through heat exchange. The stirring component 9 stirs the liquid in the water storage frame 5 to increase the flow rate of the coolant, thereby improving the heat exchange efficiency and achieving rapid cooling. Specifically, the drive motor 91 can be started to drive the rotating rod 92 to rotate, thereby driving the stirring plate 93 thereon to rotate, and then stirring the liquid in the water storage frame 5 to flow rapidly, increase the flow rate of the coolant, and improve the heat exchange efficiency. After the mold is cooled to the set working temperature, the electromagnetic valve 7 is closed to stop the flow of coolant, and the mold is ready for the next round of pressing. Through the above working principle, the rapid cooling of the mold can effectively control the heat generated during the pressing process and keep the mold temperature uniform and stable, thereby improving the dimensional accuracy and performance consistency of powder metallurgy parts, and also extending the service life of the mold.

[0029] like Figure 2 As shown, in this embodiment, there are multiple stirring plates 93, and the multiple stirring plates 93 are distributed in a linear array and fixedly installed on the outer peripheral side of the rotating rod 92, and the stirring plates 93 are arc-shaped.

[0030] The multiple stirring plates 93 and the arc-shaped arrangement improve the effect of stirring the liquid, thereby further increasing the flow rate of the cooling liquid and improving the heat exchange efficiency. Embodiment 2

[0031] On the basis of the first embodiment, in order to avoid leaving gaps in the metal powder when filling the mold with metal powder, affecting the molding quality, and to avoid excess metal powder remaining on the top of the mold when filling the powder.

[0032] like Figure 6As shown, in this embodiment, a mounting plate 10 is fixedly mounted on the bottom of the base 1, a vibration motor 11 is fixedly mounted on the top of the mounting plate 10, a vibration rod 12 is fixedly mounted on the output end of the vibration motor 11, and the top end of the vibration rod 12 contacts the bottom of the mold body 8.

[0033] After the powder filling is completed, the vibration motor 11 can be started to drive the vibration rod 12 to quickly knock on the bottom of the mold body 8, so that the mold body 8 vibrates. At the same time, the powder in the mold body 8 can be vibrated and dispersed evenly, and the filling effect is better, avoiding gaps between the metal powders and affecting the molding quality.

[0034] like Figure 3 As shown, in this embodiment, a support plate 13 is fixedly installed on the bottom of the base 1 , and a shock-absorbing rubber pad 14 is fixedly installed on the bottom of the support plate 13 .

[0035] The vibration motor 11 may generate certain vibrations to the entire device when in use, and the shock-absorbing rubber pad 14 has a buffering and shock-absorbing effect, thereby improving the stability of the device to a certain extent.

[0036] like Figure 4 As shown, in this embodiment, a collecting box 15 is fixedly installed on one side of the bracket 2, a suction pump 16 is fixedly installed on the top of the collecting box 15, a connecting pipe 17 is fixedly inserted on the collecting box 15, and a collecting cover 18 is fixedly installed on one end of the connecting pipe 17. A filter cover can be set at the air inlet of the suction pump 16 to prevent metal powder from entering the suction pump 16 and causing damage.

[0037] Start the suction pump 16, and the suction force it generates will pass through the collection box 15, the connecting pipe 17 and the collection cover 18, and suck the metal powder remaining on the top surface of the mold body 8 into the collection box 15 for centralized collection, thereby avoiding the metal powder remaining on the top surface of the mold body 8 and affecting the subsequent product production.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A rapidly cooled powder metallurgy mold, characterized in that: include: Base (1); A bracket (2), the bracket (2) being fixedly mounted on the top of the base (1), and a die punch (3) being mounted on the bracket (2); A cooling box (4), the cooling box (4) being fixedly mounted on one side of the base (1), a water storage frame (5) being fixedly mounted on the base (1), a pipe (6) being connected between the cooling box (4) and the water storage frame (5), and an electromagnetic valve (7) being provided on the pipe (6); A mold body (8), the mold body (8) being mounted on the base (1), and the water storage frame (5) wrapping around the outer peripheral side of the mold body (8); A stirring component (9), the stirring component (9) is mounted on the water storage frame (5), and is used to stir the liquid in the water storage frame (5) to increase the flow rate.

2. A rapidly cooled powder metallurgy mold according to claim 1, characterized in that: The stirring assembly (9) comprises a driving motor (91) fixedly mounted on one side of the base (1); a rotating rod (92) is rotatably mounted between two sides of the inner wall of the water storage frame (5); one end of the rotating rod (92) penetrates the water storage frame (5) and the base (1) and extends to the outside of the base (1) to be fixedly connected to the output end of the driving motor (91); and a stirring plate (93) is fixedly mounted on the outer peripheral side of the rotating rod (92).

3. A rapidly cooled powder metallurgy mold according to claim 2, characterized in that: There are a plurality of stirring plates (93), and the plurality of stirring plates (93) are distributed in a linear array and fixedly mounted on the outer peripheral side of the rotating rod (92), and the stirring plates (93) are arc-shaped.

4. The rapid cooling powder metallurgy mold according to claim 1, characterized in that: A mounting plate (10) is fixedly mounted on the bottom of the base (1), a vibration motor (11) is fixedly mounted on the top of the mounting plate (10), a vibration rod (12) is fixedly mounted on the output end of the vibration motor (11), and the top end of the vibration rod (12) contacts the bottom of the mold body (8).

5. A rapidly cooled powder metallurgy mold according to claim 4, characterized in that: A support plate (13) is fixedly mounted on the bottom of the base (1), and a shock-absorbing rubber pad (14) is fixedly mounted on the bottom of the support plate (13).

6. The rapid cooling powder metallurgy mold according to claim 1, characterized in that: A collection box (15) is fixedly mounted on one side of the bracket (2), a suction pump (16) is fixedly mounted on the top of the collection box (15), a connecting pipe (17) is fixedly inserted on the collection box (15), and a collection cover (18) is fixedly mounted on one end of the connecting pipe (17).

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