Multi-point distribution cooling type die-casting mold

Abstract

This invention discloses a multi-point flow distribution cooling die-casting mold, relating to the field of die-casting mold technology. It includes a support device and a forming device. The support device includes a mounting base and a support seat, which are movably connected. The forming device includes a fixed mold and a moving mold, arranged facing each other. The fixed mold and the moving mold each have several cooling channels, and the moving mold has several main channels. Each main channel has a cavity at its end. Several cavities are located on both sides of the medium flow direction within each main channel, and the cavities on both sides are centrally symmetrically arranged. A return channel is located on the side of the cavity away from the main channel. The cooling channels are arranged along the side of the cavity closest to the return channel, and cooling occurs along the side of the cavity away from the main channel. During unilateral cooling, the pressure is higher on the side closer to the main channel. During cooling, directional cooling and contraction occur towards the return channel side, which can compensate for the high pressure in the main channel, improving the molding quality.

Description

Technical Field

[0001] This invention relates to the field of die casting mold technology, specifically a multi-point flow distribution cooling die casting mold. Background Technology

[0002] Die casting equipment, as one of the main devices for industrial processing and forming, is suitable for batch continuous casting and is widely used in various forming stages.

[0003] However, with the continuous development of automated processing technology, the application fields of die casting are becoming wider and wider, no longer limited to simple mechanical structures, but also applicable to the molding of complex structures. However, compared with general simple mechanical parts, when die casting complex parts, single-structure production cannot guarantee the production quality, while multi-cavity molding, due to the different filling speeds of each cavity, can easily affect the final molding quality.

[0004] In addition, current die casting molding mostly adopts a straight-through cooling structure, which cannot distribute cooling for multiple cavities, and the cooling process can easily affect the quality of cooling molding. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-point flow distribution cooling die casting mold to solve the problems of inconsistent filling speed and uncontrollable cooling quality in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: Die-casting molds include support devices and forming devices; The support device includes a mounting base and a support base, which are movably connected. The molding device includes a fixed mold and a moving mold, which are arranged facing each other, and each of the fixed mold and the moving mold is provided with several cooling channels; The moving mold is provided with several main channels, each main channel has a cavity at the end, and several cavities are provided on both sides of the medium flow direction in each main channel. The cavities on both sides are arranged symmetrically, and a return channel is provided on the side of the cavity away from the main channel. Several cooling channels are arranged along the side of the cavity near the return channel.

[0007] The support device, serving as the primary mounting base, consists of a mounting base and a support base, both of which are movable. A fixed mold and a moving mold are mounted on either base, allowing for linear movement and facilitating mold closing and demolding. Guide pillars can be used for auxiliary sliding guidance. Cooling channels are provided on both the fixed and moving molds, connected to a cold source. After die casting, cooling medium is injected into the cooling channels through the cold source for cooling and shaping. The main runner serves as the primary flow path, guiding the molten liquid into each cavity, using a layout with one cavity at the end and cavities on both sides.

[0008] Preferably, one cavity is set on each side, and the two cavities on the sides are arranged in a centrally symmetrical manner. The cavity near the main channel includes a concave section and a short flat section. The injected molten liquid is introduced from the concave section and the short flat section. Through the distribution of each cavity, the cooling channel is cooled along the side of the cavity away from the main channel, thereby achieving multi-point flow cooling. During die casting, the pressure is higher on the side near the main channel during single-sided cooling. During the cooling process, directional cooling and shrinkage are carried out towards the return channel side. Under the high pressure of the main channel, this can be compensated for, improving the molding quality.

[0009] Furthermore, a branch channel is provided between the main channel and the cavity; The flow distribution channel includes the corner channel and the jet channel; The main channel is connected to the corner channel and the jet channel respectively. The corner channel and the jet channel are located on the side of the cavity away from the return channel, and the jet channel faces the concave section inside the cavity.

[0010] The main flow channel connects to the cavity via a branch flow channel, which includes a corner channel connecting the short, flat section of the cavity and a jet channel connecting the concave section. By placing the corner channel and jet channel along with the return channel on both sides of the cavity, multi-point flow distribution is facilitated. The jet channel faces the concave section of the cavity, facilitating rapid filling, improving edge and corner flowability, and ensuring filling quality.

[0011] Furthermore, a slope is set on the corner road.

[0012] By setting a slope, the longitudinal flow cross section in the liquid inlet direction is reduced, and jet filling is carried out during the filling process of the short flat section of the cavity, thereby improving the filling efficiency.

[0013] Horizontal corner runner design. By horizontally designing the corner runner, the flow velocity entering the cavity is reduced, cavitation is decreased, and service life is improved.

[0014] Furthermore, the forming device also includes several flow guide seats, each with a flow channel. The flow guide seats are placed inside the main flow channel near the jet channel, with the ends of the flow channels facing the opposite corner channel.

[0015] The flow guide seat is located within the main flow channel, near the jet channel, with no guide seat at the end. Its main purpose is to intercept liquid flowing towards the end of the main flow channel, reducing the direct flow velocity, minimizing cavitation effects, and reducing cavitation. Simultaneously, it guides the molten liquid to the side of the corner channel via a flow channel, improving corner filling efficiency.

[0016] Furthermore, the inlet width of the jet channel is gradually widened along the direction of medium flow.

[0017] By gradually increasing the width of the jet channel inlet, the molten liquid can easily flow to the corners and edges, ensuring filling quality, since the corresponding cavity is relatively small.

[0018] Furthermore, a pressure boosting groove is provided between the return channel and the cavity, and the inlet width of the pressure boosting groove is set to increase gradually along the direction of medium flow.

[0019] By setting the pressure tank with increasing width, that is, the section connecting the cavity is the smallest, the resistance to flow to the pressure tank is increased under the action of molten liquid tension. With the direction of flow from the branch channel to the pressure tank as longitudinal flow, the lateral flow performance of the molten liquid can be improved by setting the pressure tank, thereby increasing the filling rate.

[0020] Furthermore, an exhaust chamber is provided at the end of the return channel, and an exhaust manifold is provided inside the exhaust chamber.

[0021] By installing an exhaust chamber, an exhaust manifold is constructed. The exhaust manifold is used to collect cold molten metal and expel gas from the mold cavity, preventing defects such as shrinkage cavities and porosity in the casting.

[0022] Furthermore, the mounting base is provided with a filling port, which is connected to several main channels.

[0023] The mounting base guides the molten liquid through the injection port and introduces it into the main channel, facilitating subsequent distribution.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: The cavity near the main channel includes a concave section and a short flat section. The injected molten liquid is introduced from the concave section and the short flat section. Through the distribution of each cavity, the cooling channel cools along the side of the cavity away from the main channel, thereby achieving multi-point flow distribution cooling. During die casting, the pressure is higher on the side near the main channel during unilateral cooling. During the cooling process, directional cooling and contraction occurs towards the return channel side, which can compensate for the high pressure in the main channel and improve the molding quality. The guide seat is set in the main channel and is mainly used to intercept the liquid flowing towards the end of the main channel, reduce the direct flow velocity, reduce the cavitation effect of the jet, and reduce cavitation. At the same time, the molten liquid is introduced to the side of the corner channel through the guide groove, improving the corner filling efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the molding device structure of the present invention; Figure 3 This is a schematic diagram of the cooling channel distribution of the present invention; Figure 4 This is a schematic diagram of the moving mold structure of the present invention; Figure 5 This is a schematic diagram of the corner channel structure of the present invention; Figure 6 This is a schematic diagram of the flow guide seat structure of the present invention; Figure 7 for Figure 6A magnified view of part A of the view.

[0026] In the diagram: 1. Support device; 11. Mounting base; 111. Injection port; 12. Support base; 2. Molding device; 21. Fixed mold; 22. Moving mold; 221. Main runner; 222. Sub-runner; 2221. Corner runner; 2222. Injection channel; 223. Cavity; 224. Return channel; 225. Exhaust chamber; 226. Pressure booster groove; 23. Guide seat; 24. Cooling channel; 3. Exhaust manifold. Detailed Implementation

[0027] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: As Figure 1 - Figure 5 As shown, the present invention provides a multi-point flow distribution cooling die casting mold technical solution.

[0029] Die-casting molds include a support device 1 and a forming device 2; The support device 1 includes a mounting base 11 and a support base 12, which are movably connected. The molding device 2 includes a fixed mold 21 and a moving mold 22, which are arranged facing each other. The fixed mold 21 and the moving mold 22 are respectively provided with a plurality of cooling channels 24. The moving mold 22 is provided with several main channels 221, and each main channel 221 is provided with a cavity 223 at its end. Several cavities 223 are provided on both sides of the medium flow direction in each main channel 221. The cavities 223 on both sides are centrally symmetrically arranged. A return channel 224 is provided on the side of the cavity 223 away from the main channel 221. Several cooling channels 24 are arranged along the side of the cavity 223 near the return channel 224.

[0030] The support device 1, serving as the main mounting base, consists of a mounting base 11 and a support base 12, both of which are movable. A fixed mold 21 and a moving mold 22 are respectively mounted on both, allowing for linear movement and facilitating mold closing and demolding. Guide pillars can be used for auxiliary sliding guidance. Cooling channels 24 are provided on both the fixed mold 21 and the moving mold 22, connected to a cold source. After die casting, a cooling medium is injected into the cooling channels 24 through the cold source for cooling and shaping. The main flow channel 221 serves as the primary flow path, guiding the molten liquid into each cavity 223, arranged with one cavity 223 at the end and cavities 223 on both sides.

[0031] Preferably, one cavity 223 is set on each side, and the two cavities 223 on the side are arranged in a centrally symmetrical manner. The side of the cavity 223 near the main channel 221 includes a concave section and a short flat section. The injected molten liquid is introduced from the concave section and the short flat section. Through the distribution of each cavity 223, the cooling channel 24 is cooled along the side of the cavity 223 away from the main channel 221, thereby achieving multi-point flow distribution cooling. During die casting, the pressure is higher on the side near the main channel 221 during single-sided cooling. During the cooling process, directional cooling and contraction are carried out towards the return channel 224. Under the high pressure of the main channel 221, compensation can be made to improve the molding quality.

[0032] Furthermore, a branch channel 222 is provided between the main channel 221 and the cavity 223; The diversion channel 222 includes an angle channel 2221 and a jet channel 2222; The main channel 221 is connected to the corner channel 2221 and the jet channel 2222 respectively. The corner channel 2221 and the jet channel 2222 are located on the side of the cavity 223 away from the return channel 224. The jet channel 2222 faces the concave section of the cavity 223.

[0033] The main channel 221 and the cavity 223 are connected by a branch channel 222. The branch channel 222 includes a corner channel 2221 for connecting the short flat section of the cavity 223 and a jet channel 2222 for connecting the concave section. By setting the corner channel 2221 and the jet channel 2222 and the return channel 224 on both sides of the cavity 223, multi-point flow distribution is facilitated. The jet channel 2222 faces the concave section of the cavity 223, which facilitates rapid filling, improves the flowability of the corners, and ensures the filling quality.

[0034] Furthermore, a slope is provided on corner 2221.

[0035] The angle channel 2221, by setting a slope, reduces the longitudinal flow cross section in the liquid inlet direction, and performs jet filling during the filling process of the short flat section of the cavity 223, thereby improving the filling efficiency.

[0036] Example 2, as Figure 6-7 As shown, the difference lies in the shape of the corner channel 2221.

[0037] The corner channel 2221 is set horizontally. By setting the corner channel 2221 horizontally, the flow rate of the corner channel 2221 entering the cavity 223 is reduced, cavitation is reduced, and service life is improved.

[0038] Furthermore, the molding device 2 also includes several flow guide seats 23, on which flow guide grooves are provided. The flow guide seats 23 are placed in the main flow channel 221 on the side close to the jet channel 2222, and the end of the flow guide grooves faces the opposite corner channel 2221.

[0039] The guide seat 23 is located within the main channel 221, near the jet channel 2222, with no guide seat at the end. The shape of the guide seats 23 on both sides of the main channel 221 is adjusted according to their location, including two specifications, ensuring that the guide channel faces the side of the opposite corner channel 2221. It is mainly used to intercept the liquid flowing towards the end of the main channel 221, reducing the direct flow velocity, minimizing the cavitation effect of the jet, and reducing cavitation. Simultaneously, the guide channel directs the molten liquid to the side of the other corner channel 2221, improving corner filling efficiency.

[0040] Furthermore, the inlet width of the jet channel 2222 is gradually widened along the direction of medium flow.

[0041] By gradually increasing the width of the inlet of the jet channel 2222, and because the corresponding cavity 223 is relatively small, the molten liquid can easily flow to the corners, ensuring the filling quality.

[0042] Furthermore, a pressure boosting groove 226 is provided between the return channel 224 and the cavity 223, and the inlet width of the pressure boosting groove 226 is set to increase along the direction of medium flow.

[0043] By setting the pressure tank 226 with increasing width, that is, the section connecting the cavity 223 has the smallest cross-section, the resistance to flow to the pressure tank 226 is increased under the action of the molten liquid tension. The direction from the flow channel 222 to the pressure tank 226 is the longitudinal flow. By setting the pressure tank 226, the lateral flow performance of the molten liquid can be improved and the filling rate can be increased.

[0044] Furthermore, an exhaust chamber 225 is provided at the end of the return channel 224, and an exhaust manifold 3 is provided inside the exhaust chamber 225.

[0045] The exhaust chamber 225 is used to install the exhaust bag 3. The exhaust bag 3 is used to collect cold molten metal and discharge the gas in the mold cavity 223 to prevent defects such as shrinkage cavities and porosity in the casting.

[0046] Furthermore, the mounting base 11 is provided with a filling port 111, which is connected to several main channels 221 respectively.

[0047] The mounting base 11 guides the molten liquid through the injection port 111 and introduces it into the main channel 221, which facilitates subsequent distribution.

[0048] The working principle of this invention is as follows: The cavity 223 near the main channel 221 includes a concave section and a short flat section. The injected molten liquid is introduced from the concave section and the short flat section. Through the distribution of each cavity 223, the cooling channel 24 cools along the side of the cavity 223 away from the main channel 221, thereby achieving multi-point flow distribution cooling. During die casting, the pressure is higher on the side near the main channel 221 during unilateral cooling. During the cooling process, directional cooling and contraction occurs towards the return channel 224. Under the high pressure of the main channel 221, this can be compensated for, improving the molding quality. The guide seat 23 is set in the main channel 221 and is mainly used to intercept the liquid flowing towards the end of the main channel 221, reducing the direct flow velocity, reducing the cavitation effect of the jet, and reducing cavitation. At the same time, the molten liquid is introduced to the side of the corner channel 2221 through the guide groove, improving the corner filling efficiency.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-point flow distribution cooling die-casting mold, characterized in that: The die-casting mold includes a support device (1) and a forming device (2). The support device (1) includes a mounting base (11) and a support base (12), which are movably connected; The molding device (2) includes a fixed mold (21) and a moving mold (22), which are arranged facing each other. The fixed mold (21) and the moving mold (22) are respectively provided with a plurality of cooling channels (24). The moving mold (22) is provided with a plurality of main channels (221), and each main channel (221) is provided with a cavity (223) at its end. A plurality of cavities (223) are provided on both sides of the medium flow direction in each main channel (221). The cavities (223) on both sides are symmetrically arranged. A return channel (224) is provided on the side of the cavity (223) away from the main channel (221). Several of the cooling channels (24) are arranged along the cavity (223) on the side near the return channel (224).

2. The multi-point flow distribution cooling die-casting mold according to claim 1, characterized in that: A branch channel (222) is provided between the main channel (221) and the cavity (223); The diversion channel (222) includes a corner channel (2221) and a jet channel (2222); The main channel (221) is connected to the corner channel (2221) and the jet channel (2222) respectively. The corner channel (2221) and the jet channel (2222) are located on the side of the cavity (223) away from the return channel (224). The jet channel (2222) faces the concave section of the cavity (223).

3. The multi-point flow distribution cooling die-casting mold according to claim 2, characterized in that: A slope is provided on the corner road (2221).

4. The multi-point flow distribution cooling die-casting mold according to claim 2, characterized in that: The corner track (2221) is set horizontally.

5. A multi-point flow distribution cooling die-casting mold according to claim 4, characterized in that: The forming device (2) also includes several guide seats (23), and the guide seats (23) are provided with flow channels. The guide seats (23) are placed in the main channel (221) on the side close to the jet channel (2222), and the end of the flow channel faces the opposite corner channel (2221).

6. A multi-point flow distribution cooling die-casting mold according to any one of claims 2 to 5, characterized in that: The inlet width of the jet channel (2222) is gradually widened along the direction of medium flow.

7. A multi-point flow distribution cooling die-casting mold according to claim 6, characterized in that: A pressure boosting groove (226) is provided between the return channel (224) and the cavity (223), and the inlet width of the pressure boosting groove (226) is set to increase along the medium flow direction.

8. A multi-point flow distribution cooling die-casting mold according to claim 1, characterized in that: The end of the return channel (224) is provided with an exhaust chamber (225), and an exhaust bag (3) is provided in the exhaust chamber (225).

9. A multi-point flow distribution cooling die-casting mold according to claim 2, characterized in that: The mounting base (11) is provided with a filling port (111), which is connected to a number of main channels (221).

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