Die-casting die cooling structure

Abstract

The utility model belongs to the technical field of die-casting dies, and provides a die-casting die cooling structure which comprises an upper die and a lower die, a sprue spreader is further arranged on the inner side of the lower die, and a water flow channel used for heat dissipation is formed in the inner side of the sprue spreader. A heat conduction sleeve used for heat dissipation and a water inlet ring used for guiding water are embedded in the water flow channel. The cooling structure further comprises a water flow channel used for assisting water flow in entering and exiting the heat conduction sleeve, the heat conduction sleeve is attached to the inner wall of the water flow channel, the heat conduction sleeve is made of heat conduction materials, and the water flow enters the heat conduction sleeve along the water flow channel to take away heat on the sprue spreader. Water flow does not make contact with an inner cavity of the sprue spreader, generated scale cannot be left in the inner cavity of the sprue spreader, the heat conduction sleeve and the water inlet ring can be replaced at any time, the heat dissipation effect of the sprue spreader is not affected, and the interior of the sprue spreader does not need to be cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of die casting moulds, and particularly relates to a cooling structure of a die casting mould. Background Art

[0002] Die casting mold is a tool for casting metal parts, a tool that completes the die casting process on a special die casting die forging machine. The basic process of die casting is: the molten metal is first cast and filled into the mold cavity at a low speed or high speed. The mold has a movable cavity surface, which is pressurized and forged with the cooling process of the molten metal, which not only eliminates the shrinkage and shrinkage defects of the blank, but also makes the internal structure of the blank reach the broken grains in the forged state. The comprehensive mechanical properties of the blank are significantly improved.

[0003] The die-casting process of the die-casting mold is that after the upper and lower molds are closed, the molten metal is poured into the pouring port, and then it is diverted into the mold cavity through the diverter cone. The diverter cone generally needs to be provided with a cooling water channel to cool it. However, the internal temperature of the diverter cone in contact with the molten metal is very high. The scale generated by the high temperature after the water contacts it will adhere to the cooling water channel, which needs to be regularly treated with a brush or other tools. The presence of scale will also affect the heat dissipation of the diverter cone. For this reason, we propose a die-casting mold cooling structure to solve the problem of scale inside the diverter cone affecting heat dissipation Utility Model Content

[0004] The utility model provides a die-casting mold cooling structure, which solves the problems in the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A die-casting mold cooling structure comprises an upper mold and a lower mold, wherein a diverter cone is provided inside the lower mold, a water flow channel for heat dissipation is provided inside the diverter cone, and a heat-conducting sleeve for heat dissipation and a water inlet ring for water conduction are embedded along the water flow channel;

[0007] The cooling structure also includes a water flow channel for assisting water flow in and out of the heat-conducting sleeve. The heat-conducting sleeve and the inner wall of the water flow channel fit each other, and the heat-conducting sleeve is made of heat-conducting material. Water flows along the water flow channel into the heat-conducting sleeve to take away the heat on the diverter cone, thereby completing the cooling of the diverter cone.

[0008] Furthermore, the heat conductive sleeve is made of copper.

[0009] Furthermore, a pouring sleeve is provided above the diverter cone, and the pouring sleeve is arranged on the inner side of the upper mold. A pouring port is also opened on the inner side of the pouring sleeve. The pouring port and the diverter channel on the diverter cone are interconnected to guide the molten metal into the mold cavity.

[0010] Furthermore, the heat-conducting sleeve and the water inlet ring are integrally formed.

[0011] Furthermore, the heat-conducting sleeve and the water inlet ring are hollow structures, and a cavity for accommodating cooling water is arranged inside.

[0012] Furthermore, the water flow channel includes a water inlet channel and a water outlet channel opened on the lower mold, and a water inlet and a water outlet opened on both sides of the water inlet ring, and the water inlet and the water outlet correspond to the water inlet channel and the water outlet channel.

[0013] Furthermore, sealing rings are provided between the water inlet and the water outlet and the water inlet channel and the water outlet channel.

[0014] Furthermore, the water inlet channel and the water outlet channel ports are also plugged with a water inlet valve port and a water outlet valve port, and the water inlet valve port and the water outlet valve port are connected to an external water delivery device for water supply.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the utility model, a heat-conducting sleeve and a water inlet ring are provided, and a water flow channel assists water to enter the heat-conducting sleeve, so as to cool the diverter cone. The water flow does not contact the inner cavity of the diverter cone, and the scale generated will not remain in the inner cavity of the diverter cone. The heat-conducting sleeve and the water inlet ring can be replaced at any time without affecting the heat dissipation effect of the diverter cone itself, and there is no need to clean the inside of the diverter cone.

[0017] 2. In the utility model, a sealing ring is provided along the gap between the water inlet ring and the water inlet and outlet channel of the lower mold, thereby preventing water from overflowing and seeping into the grooves formed by the lower mold and the diverter cone. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 This is a cross-sectional schematic diagram of a cooling structure of a die-casting mold of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the diverter cone, heat-conducting sleeve and water inlet ring;

[0021] Figure 3 for Figure 2 Schematic diagram of the decomposition structure;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the lower mold;

[0023] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point A in the middle.

[0024] In the figure, 10, upper mold; 11, casting sleeve; 12, casting port; 20, lower mold; 30, diverter cone; 31, heat transfer sleeve; 32, water inlet ring; 33, sealing ring; 34, water inlet; 35, water outlet; 36, water outlet valve port; 37, water inlet valve port; 38, water outlet channel; 39, water inlet channel. DETAILED DESCRIPTION

[0025] 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 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.

[0026] Example 1: Figure 1 As shown, a die-casting mold cooling structure includes an upper mold 10 and a lower mold 20. A pouring sleeve 11 is arranged on the inner side of the upper end of the upper mold 10. A pouring port 12 is opened on the inner side of the pouring sleeve 11 for the molten metal to enter the mold cavity from the pouring port 12. A diverter cone 30 is also arranged below the pouring port 12. The diverter cone 30 is arranged on the inner side of the lower mold 20.

[0027] In order to facilitate the heat dissipation of the diverter cone 30, a water flow channel for cooling is opened on the inner side of the diverter cone 30. When the molten metal contacts the diverter cone 30, the high temperature causes the water to boil and evaporate, leaving scale on the inner wall of the water flow channel of the diverter cone 30, which will affect the subsequent heat dissipation. For this purpose, the following is designed: Figure 2 In the structure shown, a heat-conducting sleeve 31 is arranged along the inner side of the water flow channel of the diverter cone 30, and a water inlet ring 32 is integrally formed at the lower end of the heat-conducting sleeve 31. The heat-conducting sleeve 31 has the same shape as the water flow channel opened on the inner side of the diverter cone 30, and can be well embedded in the water flow channel opened on the diverter cone 30, and is in contact with the inner wall of the water flow channel. The heat-conducting sleeve 31 is made of copper or other materials with good thermal conductivity, and the structure composed of the heat-conducting sleeve 31 and the water inlet ring 32 is a hollow structure inside, which is convenient for water to enter;

[0028] In order to facilitate water flow into the inner cavity of the heat-conducting sleeve 31 and the water inlet ring 32, as shown in FIG. Figure 3 As shown, a water inlet 34 and a water outlet 35 are respectively provided on both sides of the water inlet ring 32. Water can flow into the heat-conducting sleeve 31 along the water inlet 34 and then be discharged along the water outlet 35, taking away the heat of the heat-conducting sleeve 31, thereby achieving the purpose of cooling the splitter cone 30. The cooling of the splitter cone 30 is achieved by cooling the heat-conducting sleeve 31.

[0029] In order to facilitate the water flow, it can enter the water inlet circle 32. Figure 4 As shown, a water inlet channel 39 and a water outlet channel 38 are respectively provided on the lower mold 20 and the water inlet 34 and the water outlet 35, and a water inlet valve port 37 and a water outlet valve port 36 are correspondingly plugged along the ports of the water inlet channel 39 and the water outlet channel 38 for connecting with an external water inlet device and a water pump;

[0030] The above structure is designed to prevent the cooling water and the water flow channel in the inner cavity of the diverter cone 30 from contacting each other when in use, so as to prevent the cooling water from evaporating under the influence of the high temperature of the diverter cone 30 and leaving scale inside the diverter cone 30. When the above structure is used, only the heat-conducting sleeve 31 and the water inlet ring 32 need to be replaced when replacement is needed, which is lower in cost and will not affect the mold opening quality of the mold itself. When the cooling water passes through the water inlet channel 39 and the water outlet channel 38 on the lower mold 20, due to the low temperature of the two channels, scale will not be left and the water flow will not rise in temperature. The water flow only cools the diverter cone 30.

[0031] Embodiment 2: The difference from embodiment 1 is that Figure 4-5 As shown, in order to ensure the sealing between the water inlet ring 32 and the water inlet channel 39 and the water outlet channel 38, as shown in FIG. Figure 5 As shown, a sealing ring 33 is further provided between the water inlet channel 39 and the water outlet channel 38 and the water inlet 34 and the water outlet 35 of the water inlet ring 32 to ensure a sealing effect so that water can smoothly flow into the water inlet ring 32 .

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A die-casting mold cooling structure, characterized in that: It comprises an upper mold (10) and a lower mold (20), wherein a diverter cone (30) is provided inside the lower mold (20), a water flow channel for heat dissipation is provided inside the diverter cone (30), and a heat-conducting sleeve (31) for heat dissipation and a water inlet ring (32) for water conduction are embedded along the water flow channel; The cooling structure further comprises a water flow channel for assisting water flow in and out of the heat-conducting sleeve (31); the heat-conducting sleeve (31) and the inner wall of the water flow channel are in contact with each other, and the heat-conducting sleeve (31) is made of a heat-conducting material; water flows along the water flow channel into the heat-conducting sleeve (31) to take away the heat on the diverter cone (30), thereby completing the cooling of the diverter cone (30).

2. The die-casting mold cooling structure according to claim 1, characterized in that: The heat-conducting sleeve (31) is made of copper.

3. The die-casting mold cooling structure according to claim 1, characterized in that: A casting sleeve (11) is also arranged above the diverter cone (30). The casting sleeve (11) is arranged on the inner side of the upper mold (10). A casting port (12) is also opened on the inner side of the casting sleeve (11). The casting port (12) and the diverter channel on the diverter cone (30) are interconnected and used to guide the molten metal into the mold cavity.

4. The die-casting mold cooling structure according to claim 1, characterized in that: The heat-conducting sleeve (31) and the water inlet ring (32) are integrally formed.

5. The die-casting mold cooling structure according to claim 4, characterized in that: The heat-conducting sleeve (31) and the water inlet ring (32) are hollow structures, and a cavity for accommodating cooling water is arranged inside.

6. The die-casting mold cooling structure according to claim 1, characterized in that: The water flow channel comprises a water inlet channel (39) and a water outlet channel (38) provided on the lower mold (20), and a water inlet (34) and a water outlet (35) provided on both sides of the water inlet ring (32), wherein the water inlet (34) and the water outlet (35) correspond to the water inlet channel (39) and the water outlet channel (38).

7. The die-casting mold cooling structure according to claim 6, characterized in that: A sealing ring (33) is also provided between the water inlet (34) and the water outlet (35) and the water inlet channel (39) and the water outlet channel (38).

8. The die-casting mold cooling structure according to claim 6, characterized in that: The water inlet channel (39) and the water outlet channel (38) are also plugged with a water inlet valve port (37) and a water outlet valve port (36), and the water inlet valve port (37) and the water outlet valve port (36) are connected to an external water delivery device for water supply.

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