Auxiliary heating type aluminum nitride forming die

Abstract

The utility model discloses an auxiliary heating type aluminum nitride forming die which comprises an upper die base, a punching machine pressure rod is arranged in the middle of the upper end of the upper die base and serves as the output end of punching equipment, and a plurality of bolts are arranged at the upper end of the punching machine pressure rod at equal intervals. The lower end of the bolt extends into the upper die base and is in threaded connection with the upper die base, a male die is fixedly connected to the middle of the lower end of the upper die base, a female die is arranged under the upper die base, and a die cavity is formed in the middle of the upper end of the female die. The lower end of the female die is fixedly connected with a lower die base, the male die and the die cavity are heated through the first heating wire and the second heating wire, organic matter in granulation powder is softened, the powder can better obtain better green body density and density uniformity through die pressing, after die pressing is completed, heat dissipation is conducted on the male die and the die cavity, and the density uniformity of the powder is improved. And the workpiece forming efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminum nitride blank forming technical field, concretely is auxiliary heating formula aluminum nitride forming die. BACKGROUND

[0002] Aluminum nitride is a kind of ceramic insulator, aluminum nitride has higher heat transfer capacity, and after aluminum nitride is treated with metal, can replace bauxite and beryllium oxide for the manufacture of a large number of electronic instruments.Aluminum nitride ceramic body is prepared from aluminum nitride powder, needs to utilize forming process to prepare powder into body, then carries out sintering work again.Aluminum nitride forming process mainly has dry pressing forming isostatic pressing forming, flow casting forming and injection forming etc.

[0003] Dry pressing forming (axial pressing forming) is that aluminum nitride powder after surface active agent modification etc. pretreatment is added into metal mould, slowly applies pressure to make it become dense body forming process.Aluminum nitride powder contains organic binder, utilizes the viscosity of organic binder to make aluminum nitride powder form, but organic binder will produce vitrification when temperature is lower, affects the green density and density uniformity of processed workpiece CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a purpose at providing auxiliary heating formula aluminum nitride forming die, can heat the die, improve the temperature of aluminum nitride powder in the die, make the organic binder contained in aluminum nitride powder fusion, so that powder material obtains better green density and density uniformity by mould pressing, and the die is cooled after processing, makes workpiece fast setting, improves processing efficiency.

[0005] To realize the above-mentioned purpose, provide auxiliary heating formula aluminum nitride forming die, including upper die holder, the upper end middle part of upper die holder is equipped with punch press pressure rod, and punch press pressure rod is the output end of stamping equipment, the upper end of punch press pressure rod is equidistant and is equipped with a plurality of bolts, and the bolt is downward and penetrates punch press pressure rod and is slidably connected with punch press pressure rod, the lower end of bolt extends to upper die holder and is threadedly connected with upper die holder, the lower end middle part of upper die holder is fixedly connected with male die, the directly below of upper die holder is equipped with female die, the upper end middle part of female die is equipped with die cavity, and die cavity is matched with male die, the lower end of female die is fixedly connected with lower die holder, the first heating wire is arranged in male die, and the second heating wire is arranged in female die.Second heating wire heats in female die, improves die cavity surface temperature, high-temperature-resistant motor drives fan blade to rotate, makes outside low-temperature air enter ventilation pipeline, and is discharged through second heat dissipation hole, and the heat dissipation of heat conduction plate bottom and second heating wire is carried out, the die cavity is cooled down, and the setting speed of forming workpiece in die is improved.

[0006] The lower end middle part of the female die is fixedly connected with a second dust removal net, and the ventilation pipeline is located in the middle part of the second dust removal net.

[0007] The upper die seat and the female die surface are respectively provided with an inlet pipeline, and the inlet pipeline is respectively communicated with the heating cavity and the ventilation pipeline.

[0008] Compared with the prior art, the beneficial effects of the auxiliary heating type aluminum nitride forming die are as follows: the first heating wire and the second heating wire heat the male die and the die cavity, the organic matter in the granulating powder is softened, the powder can pass through the die pressing to obtain better green density and density uniformity, and the male die and the die cavity are cooled after the die pressing is completed, and the forming efficiency of the workpiece is improved.

[0009] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0010] The present application will be further described below in combination with the drawings and embodiments;

[0011] Figure 1 It is a perspective view of the auxiliary heating type aluminum nitride forming die of the present application;

[0012] Figure 2 It is a sectional view of the upper die seat of the auxiliary heating type aluminum nitride forming die of the present application;

[0013] Figure 3 It is a sectional view of the female die of the auxiliary heating type aluminum nitride forming die of the present application;

[0014] Figure 4 It is Figure 3 It is an enlarged view of A in the middle.

[0015] In the figure: 1, punch press pressure rod; 2, bolt; 3, upper die seat; 4, first dust removal net; 5, female die; 6, lower die seat; 7, cooling fan; 8, air inlet channel; 9, male die; 10, first heating wire; 11, heating cavity; 12, first cooling hole; 13, inlet pipeline; 14, heat conduction plate; 15, second cooling hole; 16, die cavity; 17, ventilation pipeline; 18, second dust removal net; 19, support frame; 20, high-temperature-resistant motor; 21, fan blade; 22, second heating wire. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0017] Please refer to Figure 1 - Figure 4The utility model provides a technical scheme: auxiliary heating formula aluminum nitride forming die, including upper die holder 3, the upper end middle part of upper die holder 3 is equipped with punch press pressure rod 1, and punch press pressure rod 1 is the output end of stamping equipment, and the upper end of punch press pressure rod 1 is equipped with a plurality of bolts 2 at equal intervals, and bolt 2 is downwardly penetrated punch press pressure rod 1 and is slidably connected with punch press pressure rod 1, and the lower end of bolt 2 extends to upper die holder 3 and is threadedly connected with upper die holder 3, the lower end middle part of upper die holder 3 is fixedly connected with male die 9, and heating cavity 11 is seted up in male die 9, and first heating wire 10 is fixedly connected with heating cavity 11 side wall, and one end middle part of upper die holder 3 is equipped with air inlet channel 8, and the other end of air inlet channel 8 is communicated with heating cavity 11, and the outside end of male die 9 is equidistantly provided with a plurality of first heat dissipation holes 12, and first heat dissipation hole 12 is located at the top of heating cavity 11 and is communicated with heating cavity 11, and first heat dissipation hole 12 is located above first heating wire 10, and one end middle part of upper die holder 3 is fixedly connected with heat dissipation fan 7, and the output of heat dissipation fan 7 is communicated with air inlet channel 8, first heating wire 10 heats male die 9, improves male die 9 surface temperature, heat dissipation fan 7 sends the low-temperature air of outside through air inlet pipeline and enters heating cavity 11, and heats first heating wire 10 and first male die 9, and the reduction speed of the surface temperature of first male die 9 is reduced rapidly, to assist cooling the workpiece processed. The one end of heat dissipation fan 7 away from upper die holder 3 is fixedly connected with first dust screen 4, and the input of heat dissipation fan 7 is located in the middle part of first dust screen 4, first dust screen 4 filters the air inhaled by heat dissipation fan 7, avoids the dust and impurity in air to enter heating cavity 11, and covers the surface of first heating wire 10. The height of male die 9 is greater than the depth of die cavity 16, and the distance between the bottom of first heat dissipation hole 12 and the lower end of male die 9 is greater than the depth of die cavity 16, through the cooperation of male die 9 and die cavity 16, when male die 9 enters die cavity 16 and molds the aluminum nitride powder, first heat dissipation hole 12 is above female die 5, avoids the aluminum nitride powder from entering first heat dissipation hole 12 and makes first heat dissipation hole 12 be blocked, and reduces the heat dissipation efficiency of male die 9.The lower end of the concave die 5 is fixedly connected with the lower die seat 6, the first heating wire 10 is arranged in the convex die 9, and the second heating wire 22 is arranged in the concave die 5. The surface of the upper die seat 3 and the surface of the concave die 5 are respectively provided with the wire inlet pipeline 13, and the wire inlet pipeline 13 is respectively communicated with the heating cavity 11 and the ventilation pipeline 17. The wire inlet pipeline 13 makes the wires of the first heating wire 10 and the second heating wire 22 communicated with the outside, and is used for supplying power to the first heating wire 10 and the second heating wire 22, so that the surface of the mold cavity 16 and the surface of the convex die 9 are kept at 40-70 degrees Celsius.

[0018] Working principle: in use, the punch press pressure rod 1 drives the upper die holder 3 to move downward, so that the male die 9 exerts pressure on the aluminum nitride powder in the mold cavity 16, so that it is formed, in the forming process, the first heating wire 10 heats up, and the surface of the heating cavity 11 is heated, so as to improve the temperature of the outer surface of the male die 9, the second heating wire 22 heats up and is transmitted to the heat conduction plate 14, and the temperature of each part of the surface of the mold cavity 16 is improved through the heat conduction plate 14, so as to heat the aluminum nitride powder in the forming process, so that the organic binder in the aluminum nitride powder is melted, so that the powder can obtain better green density and density uniformity through die pressing; after the workpiece is formed, the heat dissipation fan 7 and the high-temperature-resistant motor 20 work, the heat dissipation fan 7 sends the low-temperature air outside through the air inlet pipeline into the heating cavity 11, and the first heating wire 10 and the first male die 9 are cooled, the surface temperature of the first male die 9 is quickly reduced, the hot air in the heating cavity 11 is discharged through the first cooling hole 12, the high-temperature-resistant motor 20 drives the fan blade 21 to rotate, so that the low-temperature air outside enters the ventilation pipeline 17, the hot air in the ventilation pipeline 17 is discharged through the second cooling hole 15, and the bottom of the heat conduction plate 14 and the second heating wire 22 are cooled, which assists in cooling the mold cavity 16 and the male die 9, so as to improve the setting speed of the workpiece in the mold.

[0019] The above embodiment of the utility model is described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. An assisted heating aluminum nitride forming die comprising an upper die seat (3), characterized in that, The upper end of the upper die holder (3) is provided with a punch press pressure rod (1), and the punch press pressure rod (1) is the output end of the stamping equipment, a plurality of bolts (2) are equidistantly arranged at the upper end of the punch press pressure rod (1), the bolts (2) penetrate downward through the punch press pressure rod (1) and are in sliding connection with the punch press pressure rod (1), the lower ends of the bolts (2) extend into the upper die holder (3) and are in threaded connection with the upper die holder (3), the middle of the lower end of the upper die holder (3) is fixedly connected with a male die (9), a female die (5) is arranged directly below the upper die holder (3), the middle of the upper end of the female die (5) is provided with a die cavity (16), and the die cavity (16) is matched with the male die (9), the lower end of the female die (5) is fixedly connected with a lower die holder (6), the male die (9) is provided with a first heating wire (10), and the female die (5) is provided with a second heating wire (22).

2. The auxiliary-heated aluminum nitride forming mold according to claim 1, wherein: The male die (9) is provided with a heating cavity (11), and the side wall of the heating cavity (11) is fixedly connected with the first heating wire (10), one end of the upper die holder (3) is provided with an air inlet channel (8), and the other end of the air inlet channel (8) is in communication with the heating cavity (11), a plurality of first heat dissipation holes (12) are equidistantly arranged at the outer side end of the male die (9), the first heat dissipation holes (12) are located at the top of the heating cavity (11) and are in communication with the heating cavity (11), the first heat dissipation holes (12) are located above the first heating wire (10), and one end of the upper die holder (3) is fixedly connected with a heat dissipation fan (7), and the output port of the heat dissipation fan (7) is in communication with the air inlet channel (8).

3. The auxiliary heated aluminum nitride forming mold of claim 2, wherein: The end of the heat dissipation fan (7) away from the upper die holder (3) is fixedly connected with a first dust removal net (4), and the input port of the heat dissipation fan (7) is located in the middle of the first dust removal net (4).

4. The auxiliary heated aluminum nitride forming mold of claim 2, wherein: The height of the male die (9) is greater than the depth of the die cavity (16), and the distance between the bottom of the first heat dissipation hole (12) and the lower end of the male die (9) is greater than the depth of the die cavity (16).

5. The auxiliary heated aluminum nitride forming mold of claim 2, wherein: The female die (5) is fixedly connected with a heat conduction plate (14), and the heat conduction plate (14) surrounds the outside of the die cavity (16), the lower end of the female die (5) is provided with a ventilation pipeline (17), and the ventilation pipeline (17) extends upward to the bottom of the heat conduction plate (14), the inner wall of the ventilation pipeline (17) is fixedly connected with a support frame (19), the middle of the support frame (19) is fixedly connected with a high-temperature-resistant motor (20), and the high-temperature-resistant motor (20) penetrates through the support frame (19), the output end of the high-temperature-resistant motor (20) is fixedly connected with a fan blade (21), and the output end of the high-temperature-resistant motor (20) is located in the middle of the fan blade (21), the lower end of the heat conduction plate (14) is fixedly connected with a second heating wire (22), and the second heating wire (22) is located in the ventilation pipeline (17), the lower die holder (6) is provided with a plurality of second heat dissipation holes (15) at the two side ends, respectively, and the second heat dissipation holes (15) are in communication with the ventilation pipeline (17), and the second heat dissipation holes (15) are located above the fan blade (21).

6. The auxiliary heated aluminum nitride forming mold of claim 5, wherein: The lower middle part of the concave die (5) is fixedly connected with a second dust removal net (18), and a ventilation duct (17) is located in the middle part of the second dust removal net (18).

7. The auxiliary heated aluminum nitride forming mold of claim 5, wherein: The upper die seat (3) and the concave die (5) are respectively provided with wire inlet ducts (13) on the surfaces, and the wire inlet ducts (13) respectively communicate with the heating cavities (11) and the ventilation duct (17).

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