Hard alloy ball tooth pressing die

Abstract

The utility model belongs to the technical field of alloy ball tooth die equipment, and particularly relates to a hard alloy ball tooth pressing die which comprises a die frame and a cavity, and the cavity is arranged on the inner end face of the die frame and penetrates through the die frame. The customized heat dissipation box, the cold radiator, the air inlet fan and the air outlet exhaust fan are arranged, when the die support and the cavity are used for the hard alloy ball tooth pressing die, the pressing hammer used for pressing presses the interior of the cavity, the interior of the cavity is continuously heated due to friction, the cavity extends downwards to the middle of the cold radiator, the high-heat-conductivity cold radiator absorbs heat, and therefore the heat dissipation efficiency of the hard alloy ball tooth pressing die is improved. When the temperature is high, an operator turns on the air inlet fan and the exhaust fan through the control panel, the air inlet fan and the exhaust fan suck external low-temperature airflow into the customized heat dissipation box and blow the cold radiator in a positioned mode at the same time, high-temperature air is brought out of the customized heat dissipation box by the exhaust fan, and cooling is completed; a heat conduction cushion layer made of silicon carbide at the inner end of the customized heat dissipation box continuously enhances the passive heat exchange effect.

Description

Technical Field

[0001] The utility model relates to the technical field of alloy ball gear mould equipment, in particular to a hard alloy ball gear pressing mould. Background Art

[0002] Carbide ball gear is a gear made of carbide material, which has the characteristics of high hardness, high wear resistance, high corrosion resistance, etc., and is widely used in various mechanical transmission systems. In the process of pressing and producing alloy ball gears, the carbide ball gear pressing die is one of the important equipment.

[0003] The prior art has the following deficiencies: the prior art "A hard alloy ball gear pressing die" with publication number CN204108141U "includes a die sleeve and an outer layer of the sheath, the sheath is a hollow cylindrical shape, a limiter is provided above the sheath, the die sleeve is divided into an upper die sleeve and a lower die sleeve, an upper punch and a lower punch are provided at both ends of the die sleeve, the thickness of the upper die sleeve is greater than the thickness of the lower die sleeve, a chamfer is provided at the connection between the upper die sleeve and the lower die sleeve, the bottom of the upper punch is a plane, the top of the lower punch is provided with an arc-shaped depression, a baffle is provided at the center of the top of the lower punch, one end of the connecting rod is connected to the baffle, and the other end passes through the lower punch and is connected to the push-pull block";

[0004] The above structure forms a smooth groove by forming the same curvature as the top of the lower punch through the baffle. It is convenient to press the carbide ball gear into shape, but the structure does not perform special heat dissipation treatment on the carbide ball gear pressing die. When the temperature is too high, the carbide will produce thermal cracks. The thermal conductivity of the carbide itself is poor, and the heat dissipation effect is limited.

[0005] The prior art has the following problems:

[0006] Due to the low toughness of cemented carbide itself, the contact between the hammer and the cavity during the pressing process causes the internal friction of the ball gear mold to generate high temperature. When the temperature is too high, the cemented carbide will be damaged by thermal cracking. However, the thermal conductivity of cemented carbide itself is poor, and it is difficult to achieve heat dissipation through its own outward heat transfer. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a cemented carbide ball gear pressing die, which solves the existing problem that cemented carbide has poor heat dissipation and is prone to thermal cracking due to high temperature.

[0008] To achieve the above purpose, the utility model provides the following technical solutions: a cemented carbide ball gear pressing die, including a cemented carbide ball gear pressing die, including a die frame and a cavity, wherein the cavity is arranged on the inner end surface of the die frame and penetrates the die frame, and is characterized in that:

[0009] A customized heat dissipation box is provided at the lower end of the mold frame, a control panel is fixedly connected to the outer end surface of the customized heat dissipation box, a positioning rod is also provided inside the customized heat dissipation box, and the air intake fan and the exhaust fan are respectively located on the outer end surfaces of the front and rear sides of the customized heat dissipation box;

[0010] The customized heat sink also includes side grooves, a cold row, and a thermal pad layer. The side grooves are strip-shaped structures and are opened on the left and right end surfaces of the customized heat sink. Two groups of cold rows are provided and are fixedly connected to the outer ends of the front and rear sides of the bottom of the customized heat sink. The thermal pad layer is embedded and fixed to the inner wall end surface of the customized heat sink, including the surrounding area and the inside of the bottom.

[0011] As a preferred technical solution of the utility model, the mold cavities are provided with four groups, and the single body is a truncated cone structure extending downward from the surface of the mold frame, and the bottom ends of the four groups of truncated cone structures are located between two groups of cold rows.

[0012] As a preferred technical solution of the utility model, there are four groups of positioning rods, which respectively penetrate the two groups of radiator structures at the bottom of the customized heat sink and establish a movable connection relationship with them. The heat sink contained in the radiator can be made of silver, copper or aluminum. Copper heat sinks are preferred in this solution.

[0013] As a preferred technical solution of the utility model, the air intake fan and the exhaust fan work in conjunction with each other, and a complete gas active heat exchange channel is formed from left to right inside the customized heat dissipation box.

[0014] As a preferred technical solution of the utility model, the mold frame and the customized heat dissipation box need to be connected to the external pressure-bearing platform during installation and preparation, and the customized heat dissipation box cannot be used as a pressure-bearing structure.

[0015] As a preferred technical solution of the utility model, the mold frame and the cavity structure are movably connected to the upper end of the customized heat dissipation box through the bottom of the mold frame, and the bottom end of the cavity needs to be kept in the middle of the customized heat dissipation box.

[0016] As a preferred technical solution of the utility model, the thermal conductive pad layer is preferably made of silicon carbide material, and the thermal conductive pad layers are separately distributed around the customized heat dissipation box and on the inner wall of the bottom end without contacting each other.

[0017] Compared with the prior art, the utility model provides a cemented carbide ball gear pressing die, which has the following beneficial effects:

[0018] This carbide ball tooth pressing mold is provided with a customized heat sink, a cold radiator, an air intake fan and an air exhaust fan. When the mold support and the cavity are used for the carbide ball tooth pressing mold, the pressing hammer used for pressing presses the inside of the cavity, and the inside of the cavity continues to heat up due to friction. The cavity extends downward to the middle of the cold radiator, and the cold radiator with high thermal conductivity performs heat exchange. When the temperature is high, the operator turns on the air intake fan and the exhaust fan through the control panel. The air intake fan and the exhaust fan suck the external low-temperature airflow into the customized heat sink while positioning and blowing the cold radiator, so that the high-temperature gas is taken out of the customized heat sink by the exhaust fan to complete the cooling. In this process, the thermal conductive pad layer made of silicon carbide at the inner end of the customized heat sink continuously enhances the passive heat exchange effect. Through the above process, the alloy ball tooth pressing mold distributed in the middle can be customized for heat dissipation. Active heat dissipation and passive heat dissipation are coordinated to prevent the alloy material mold from being damaged by thermal cracking due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the custom heat dissipation box for the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of a custom-made heat dissipation box for the utility model;

[0022] Figure 4 This is a schematic diagram of the mold frame structure of the utility model.

[0023] In the figure: 1. mold frame; 2. cavity; 3. customized heat sink; 301. side slot; 302. radiator; 303. thermal pad; 4. control panel; 5. positioning rod; 6. intake fan; 7. exhaust fan. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-4 In this embodiment: a cemented carbide ball gear pressing die includes a die frame 1 and a cavity 2, the cavity 2 is arranged on the inner end surface of the die frame 1, the cavity 2 is placed with the pressing raw material and passes through the die frame 1, the die frame 1 supports the cavity 2, and is characterized in that:

[0026] A customized heat dissipation box 3 is arranged at the lower end of the mold frame 1. The customized heat dissipation box 3 carries a special heat dissipation structure. A control panel 4 is fixedly connected to the outer end surface of the customized heat dissipation box 3. The control panel 4 controls the air intake fan 6 and the exhaust fan 7. A positioning rod 5 is also arranged inside the customized heat dissipation box 3. The positioning rod 5 fixes the position of the cold row 302. The air intake fan 6 and the exhaust fan 7 are respectively located on the outer end surfaces of the front and rear sides of the customized heat dissipation box 3. The air intake fan 6 and the exhaust fan 7 form a complete active heat dissipation channel.

[0027] The customized heat sink 3 also includes side grooves 301, a cold row 302, and a thermal pad layer 303. The side grooves 301 are strip-shaped structures and are opened on the left and right end surfaces of the customized heat sink 3. Two groups of cold rows 302 are arranged and are fixedly connected to the outer end of the front and rear sides of the bottom of the customized heat sink 3. The thermal pad layer 303 is embedded and fixed on the inner wall end surface of the customized heat sink 3, including the surrounding area and the inside of the bottom.

[0028] In this embodiment, there are four groups of cavities 2, and the single body is a truncated cone structure extending downward from the surface of the mold frame 1, and the bottom ends of the four truncated cone structures are between the two groups of cold row 302; there are four groups of positioning rods 5, which respectively penetrate the two groups of cold row 302 structures at the bottom of the customized heat dissipation box 3 and establish a movable connection relationship with them. The heat sink material contained in the cold row 302 can be made of silver, copper, and aluminum. In this solution, copper heat sinks are preferably used. Copper heat sinks are moderately priced and have excellent thermal conductivity; the air intake fan 6 and the exhaust fan 7 work in conjunction, forming a complete gas active heat exchange channel from left to right inside the customized heat dissipation box 3, and the active heat exchange promotes the customized heat dissipation box 3. Local cooling; when the mold frame 1 and the customized heat sink 3 are installed and prepared for operation, the mold frame 1 needs to be connected to the external pressure-bearing platform. The customized heat sink 3 cannot be used as a pressure-bearing structure, and the external pressure-bearing platform can effectively support the mold frame 1; the mold frame 1 and the cavity 2 structure are movably connected to the upper end of the customized heat sink 3 through the bottom of the mold frame 1, and the bottom end of the cavity 2 needs to be kept in the middle of the customized heat sink 3; the thermal conductive pad layer 303 is specifically preferably made of silicon carbide material, and the thermal conductive pad layer 303 is separately distributed on the surrounding and bottom inner walls of the customized heat sink 3 without contacting each other. Silicon carbide has high thermal conductivity, and being distributed on the surrounding and bottom can increase the area of ​​high thermal conductivity effect.

[0029] The working principle and use process of the utility model are as follows: when the mold support 1 and the cavity 2 are used for the carbide ball tooth pressing mold, the mold support 1 is first connected to the external support structure, and the pressing hammer is used to press the inside of the cavity 2. The inside of the cavity 2 continues to heat up due to friction, and the cavity 2 extends downward to the middle of the cold row 302. The cold row 302 with high thermal conductivity performs heat exchange. When the temperature is high, the operator turns on the air intake fan 6 and the exhaust fan 7 through the control panel 4. The air intake fan 6 and the exhaust fan 7 suck the external low-temperature airflow into the customized heat sink 3 while positioning and blowing the cold row 302, so that the high-temperature gas is brought out of the customized heat sink 3 by the exhaust fan 7 to complete the cooling. In this process, the thermal conductive pad layer 303 made of silicon carbide at the inner end of the customized heat sink 3 continuously enhances the passive heat exchange effect.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cemented carbide ball gear pressing die, comprising a die frame (1) and a die cavity (2), wherein the die cavity (2) is arranged on an inner end surface of the die frame (1) and penetrates the die frame (1), and is characterized in that: A customized heat dissipation box (3) is provided at the lower end of the mold frame (1); a control panel (4) is fixedly connected to the outer end surface of the customized heat dissipation box (3); a positioning rod (5) is also provided inside the customized heat dissipation box (3); and an air intake fan (6) and an exhaust fan (7) are respectively installed on the outer end surfaces of the front and rear sides of the customized heat dissipation box (3); The customized heat sink (3) further comprises side slots (301), a cold row (302), and a thermal pad layer (303); the side slots (301) are in a strip-shaped structure and are opened on the left and right end surfaces of the customized heat sink (3); two groups of cold rows (302) are provided and are fixedly connected to the outer ends of the front and rear sides of the bottom of the customized heat sink (3); the thermal pad layer (303) is embedded and fixed to the inner wall end surface of the customized heat sink (3), including the surrounding area and the inside of the bottom.

2. A cemented carbide button pressing die according to claim 1, characterized in that: The mold cavities (2) are provided with four groups, and the single body is in the form of a truncated cone structure extending downward from the surface of the mold frame (1), and the bottom ends of the four groups of truncated cone structures are located between the two groups of cold rows (302).

3. A cemented carbide button gear pressing die according to claim 1, characterized in that: Four groups of positioning rods (5) are provided, respectively penetrating two groups of cold row (302) structures at the bottom of the customized heat sink (3) and establishing a movable connection relationship therewith. The heat sink contained in the cold row (302) can be made of silver, copper or aluminum.

4. The cemented carbide button gear pressing die according to claim 1, characterized in that: The air intake fan (6) and the exhaust fan (7) work in conjunction with each other to form a complete active gas heat exchange channel from left to right inside the customized heat dissipation box (3).

5. The cemented carbide button gear pressing die according to claim 1, characterized in that: When the mold frame (1) and the customized heat dissipation box (3) are installed and prepared, the mold frame (1) needs to be connected to the external pressure-bearing platform, and the customized heat dissipation box (3) cannot be used as a pressure-bearing structure.

6. The cemented carbide button gear pressing die according to claim 1, characterized in that: The mold frame (1) and the mold cavity (2) structure are movably connected to the upper end of the customized heat dissipation box (3) through the bottom of the mold frame (1), and it is necessary to keep the bottom end of the mold cavity (2) located in the middle of the customized heat dissipation box (3).

7. The cemented carbide button gear pressing die according to claim 1, characterized in that: The thermally conductive pad layer (303) is made of silicon carbide material, and the thermally conductive pad layers (303) are separately distributed around the four sides and the inner wall of the bottom end of the customized heat dissipation box (3) and do not contact each other.

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