A forming die for high-concave workpiece

Abstract

The present invention relates to a molding die for a high-undulation workpiece, and the molding die is used for aluminum die-casting molding of high-undulation workpieces, and the molding die includes a movable mold device and a fixed mold device. The movable mold device includes a movable mold base, a movable mold core seat, a first slider assembly and a second slider assembly, and the first slider assembly and the second slider assembly slide relative to each other. The fixed mold device includes a fixed mold base body, a fixed mold core seat and a pouring gate assembly, and the cavity between the fixed mold core seat, the movable mold core seat, the first slider assembly and the second slider assembly constitutes a molding cavity. The first slider assembly is provided with a pouring channel, and the pouring channel connects the molding cavity and the pouring gate assembly, and the pouring channel is connected to the molding cavity away from the side of the boss cavity. The temperature of the molten metal in the boss cavity is lower than the temperature of the pouring channel, which can reduce the shrinkage holes and air holes of the molten metal and improve the molding quality.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a molding die for a high-undulation workpiece. Background Art

[0002] The high-relief workpiece includes a long plate-shaped base frame, a convex frame protruding from the base frame, and functional areas distributed on both sides of the convex frame, the convex frame is close to one side of the base frame, and the height of the convex frame is greater than or equal to half of the width of the base frame. The cross-section of the base frame and the convex frame perpendicular to the length direction is similar to an "L"-shaped structure, and the convex frame forms a high-relief slope structure relative to the base frame. The functional area includes a functional hole and / or a functional boss, the functional hole is a groove or concave hole structure that is laterally concave on the convex frame, and the functional boss is a convex structure that protrudes laterally from the convex frame.

[0003] Since the base and convex parts of high-concave workpieces have a large height difference and the convex parts have a complex structure, it is difficult to demold directly by traditional mold opening methods. Therefore, the metal liquid flow channel of the forming mold is long, the demolding mechanism is complex, and the mold pressure required is high, which easily leads to technical problems such as shortened mold service life and high maintenance costs, so improvements are needed. Summary of the invention

[0004] In order to overcome the problems existing in the related art, an embodiment of the present invention provides a molding die for a high-contact workpiece, so as to solve the technical problems of high-contact workpiece demoulding difficulty and high maintenance cost.

[0005] According to a first aspect of an embodiment of the present invention, a molding die for a high-contact workpiece is provided, the molding die is used for aluminum die-casting molding of the high-contact workpiece, the high-contact workpiece comprises a long plate-shaped base frame, a convex frame protruding from the base frame, and functional areas distributed on both sides of the convex frame, the convex frame is close to one side of the base frame, the height of the convex frame is greater than or equal to half of the width of the base frame, the functional area comprises a functional hole and / or a functional boss, and the molding die comprises a movable mold device and a fixed mold device:

[0006] The movable mold device comprises a movable mold base, a movable mold core seat embedded in the movable mold base, a first slider assembly and a second slider assembly slidably mounted on the movable mold base, the first slider assembly and the second slider assembly slide relative to each other, and at least a portion of the second slider assembly is inserted into the first slider assembly, a convex frame cavity corresponding to the convex frame portion is formed between the second slider assembly and the first slider assembly, and the second slider assembly is inserted into the gap of the first slider assembly to form a functional cavity corresponding to the functional area;

[0007] The fixed mold device comprises a fixed mold base body, a fixed mold core base installed on the fixed mold base body and a pouring gate assembly, and the cavity between the fixed mold core base, the movable mold core base, the first slider assembly and the second slider assembly constitutes a molding cavity;

[0008] The first slider assembly is provided with a pouring channel, and the pouring channel is connected to the molding cavity and the pouring port assembly when the first slider assembly and the second slider assembly are closed, and the pouring channel is connected to the molding cavity away from the side of the protrusion cavity.

[0009] In one embodiment, the first slider assembly includes a sliding core seat sliding on the movable mold core seat, a sliding block fixed to the sliding core seat, a high temperature resistant part embedded in the sliding block and a telescopic element connected to the sliding block, and the movable mold device includes at least one point cooling assembly plugged into the sliding block, the point cooling assembly extends into the high temperature resistant part, and the high temperature resistant part is located in the injection direction of the pouring port assembly.

[0010] In one embodiment, the sliding core seat includes a guide surface facing the side of the fixed mold device, the guide surface is a plane, the fixed mold core seat is provided with a plurality of guide channels connected to the pouring channel, the guide channels are closed to the guide surface in the mold closing posture, and a release agent is attached to the surface of the guide surface.

[0011] In one embodiment, the sliding core seat includes a first molding surface facing the second slider assembly, the first molding surface is curved and concave from the guide surface to the other edge direction, the cavity between the first molding surface and the second slider assembly constitutes a convex cavity, and the width of the convex cavity gradually decreases from the guide surface to the other edge direction;

[0012] The first molding surface is provided with a partially recessed molding portion, and part of the second sliding block assembly is inserted into the molding portion to form a functional cavity with the wall surface of the molding portion.

[0013] In one embodiment, the movable mold core seat is provided with a plurality of first slide grooves and a plurality of second slide grooves which are spaced apart from each other, the first slider assembly slides in the first slide groove, the second slider assembly is slidably connected to the second slide groove, the protrusion cavity is located at the intersection of the first slide groove and the second slide groove, at least a portion of the first slide groove is provided with a closed molten pool, the closed molten pool extends toward one side of the first slider assembly, at least a portion of the second slide groove is provided with an open molten pool, the open molten pool extends toward the direction of the second slider assembly and extends to the movable mold base through the overflow channel.

[0014] In one embodiment, the movable mold device includes a lateral cooling component, which extends from the sliding block to the sliding core seat. An annular flow channel is provided in the sliding core seat, and the annular flow channel is arranged around the end surface of the sliding core seat.

[0015] In one embodiment, the movable mold device includes a plurality of bottom cooling assemblies arranged in parallel, and the bottom cooling assemblies are installed on the movable mold base and distributed on both sides of the protrusion cavity.

[0016] In one embodiment, the second slider assembly includes a molding core seat sliding on the movable mold core seat and a linear drive element connected to the molding core seat, the molding core seat includes a second molding surface located at an end and a demolding surface intersecting with the second molding surface, the second molding surface is partially protruded to form at least one plug-in boss, the plug-in boss is inserted into the first slider assembly, the fixed mold core seat is provided with a plurality of slag discharge grooves facing the demolding surface, and the slag discharge grooves are connected to the movable mold base through a slag discharge channel.

[0017] In one embodiment, the movable mold base is provided with a recessed sliding groove, the first slider assembly and the second slider assembly slide at two ends of the sliding groove respectively, and the protruding frame cavity extends to both sides along the surface of the movable mold core seat to form a cavity space corresponding to the base frame.

[0018] In one embodiment, the movable mold base includes a concave column groove formed by the bottom depression of the sliding groove and an annular convex rib surrounding the concave column groove, the annular convex rib has an arc-shaped cross-section, and the concave column groove is located in the convex frame cavity.

[0019] The technical solution provided by the embodiment of the present invention may include the following beneficial effects: the first slider assembly and the second slider assembly slide relative to each other to form a boss cavity and a part of the molding cavity corresponding to the boss portion, and the first slider assembly and the second slider assembly slide relative to each other to facilitate demolding and removal of high-undulation workpieces. In addition, the first slider assembly is provided with a pouring channel, which can not only shorten the distance between the pouring port assembly and the molding cavity, improve the quality of aluminum die-casting molding, but also adjust the injection direction of the pouring port assembly so that the molten metal enters from the flat part of the molding cavity and then fills the high-undulation part corresponding to the boss cavity. The temperature of the molten metal in the boss cavity is lower than the temperature of the pouring channel, which can reduce the shrinkage holes and pores of the molten metal and improve the molding quality.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 FIG. 4 is a schematic structural diagram showing a molding die according to an exemplary embodiment.

[0023] Figure 2 is a schematic structural diagram showing a fixed mold device according to an exemplary embodiment.

[0024] Figure 3 is a schematic structural diagram showing a moving mold device according to an exemplary embodiment.

[0025] Figure 4 It is a schematic structural diagram showing a first slider assembly and a second slider assembly being closed to a movable mold core seat according to an exemplary embodiment.

[0026] Figure 5 is a schematic cross-sectional structural diagram showing a first slider assembly according to an exemplary embodiment.

[0027] Figure 6 is a schematic diagram showing an exploded structure of a first sliding block assembly according to an exemplary embodiment.

[0028] Figure 7 The figure is a schematic structural diagram showing a movable mold base according to an exemplary embodiment.

[0029] Figure 8 is a schematic structural diagram showing a workpiece according to an exemplary embodiment.

[0030] In the figure, the fixed mold device 10; the pouring nozzle assembly 11; the guide channel 12; the slag discharge groove 13; the fixed mold seat body 14; the fixed mold core seat 15; the reverse flow groove 16; the movable mold device 20; the movable mold base 21; the sliding groove 211; the first slide groove 212; the second slide groove 213; the closed molten pool 214; the open molten pool 215; the overflow channel 216; the first slider assembly 22; the high temperature resistant part 221; the diverter boss 2211; the sliding block 222; the mounting hole 2 221; sliding core seat 223; guide surface 2231; first molding surface 2232; molding portion 2233; concave column groove 2234; lateral cooling assembly 224; point cooling assembly 225; second slider assembly 23; connecting block 231; molding core seat 232; demolding surface 2321; second molding surface 2322; movable mold core seat 24; molding cavity 30; boss cavity 31; workpiece 40; base frame portion 41; boss portion 42; functional area 43. DETAILED DESCRIPTION

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figure 1 As shown, the present invention provides a molding die for a high-contact workpiece, and the molding die is used for aluminum die-casting to form a high-contact workpiece 40. Figure 8 As shown, the high-contact workpiece 40 includes a long plate-shaped base portion 41, a convex portion 42 protruding from the base portion 41, and functional areas 43 distributed on the two sides opposite to the convex portion 42. The convex portion 42 is close to one side of the base portion 41, and the height of the convex portion 42 is greater than or equal to half of the width of the base portion 41. The functional area 43 includes functional holes and / or functional bosses.

[0035] like Figures 1 to 4 As shown, the molding die includes a movable die device 20 and a fixed die device 10, and the molding die is installed on the equipment, wherein the equipment drives the movable die device 20 to move relative to the fixed die device 10, thereby realizing the mold opening posture and the mold closing posture. When the movable die device 20 and the fixed die device 10 are closed, a molding cavity 30 is formed, and the molding cavity 30 is provided with a cavity space corresponding to the workpiece 40.

[0036] The movable mold device 20 includes a movable mold base 21, a movable mold core seat 24 embedded in the movable mold base 21, a first slider assembly 22 and a second slider assembly 23 slidably mounted on the movable mold base 21, and the first slider assembly 22 and the second slider assembly 23 slide relative to each other. The movable mold base 21 is provided with a mounting groove, and the movable mold core seat 24 is embedded in the mounting groove. The mold-matching surfaces of the movable mold core seat 24 and the movable mold base 21 are in a plane. The movable mold core seat 24 and the movable mold base 21 are provided with a sliding groove 211, and the first slider assembly 22 and the second slider assembly 23 are respectively slidably connected to the sliding groove 211, thereby forming a relative sliding structure. For example, the first slider assembly 22 and the second slider assembly 23 slide away from each other in the demolding posture; or, they are relatively closed in the mold-matching posture.

[0037] When the first slider assembly 22 and the second slider assembly 23 slide and close relative to each other, at least part of the second slider assembly 23 is inserted into the first slider assembly 22, and a convex frame cavity 31 corresponding to the convex frame portion 42 is formed between the second slider assembly 23 and the first slider assembly 22, and the gap between the second slider assembly 23 and the first slider assembly 22 forms a functional cavity corresponding to the functional area 43. There is a spacing space between the end surface of the second slider assembly 23 and the end surface of the first slider assembly 22, and the space is combined with the end surface of the second slider assembly 23 and the end surface of the first slider assembly 22 to form the convex frame cavity 31. Part of the second slider assembly 23 is inserted into the first slider assembly 22 to form a complementary structure of the functional hole and / or the functional boss. The fixed mold device 10 includes a fixed mold base body 14, a fixed mold core seat 15 installed on the fixed mold base body 14, and a pouring port assembly 11. On the opening side of the installation groove, the tops of the first slider assembly 22 and the second slider assembly 23 have a groove structure corresponding to the bottom frame portion 41. When the fixed mold device 10 is closed to the movable mold device 20, the cavity between the fixed mold core seat 15, the movable mold core seat 24, the first slider assembly 22 and the second slider assembly 23 constitutes a molding cavity 30. The first slider assembly 22 and the second slider assembly 23 slide relative to each other to form a convex frame cavity 31 corresponding to the convex frame portion 42 and a part of the molding cavity 30. The first slider assembly 22 and the second slider assembly 23 slide relative to each other to expand to facilitate demolding and removal of the high-concave workpiece 40.

[0038] The first slider assembly 22 is provided with a pouring channel. Accordingly, during the sliding process of the first slider assembly 22, the pouring channel changes position accordingly. The pouring channel connects the molding cavity 30 and the pouring gate assembly 11 when the first slider assembly 22 and the second slider assembly 23 are closed, and the pouring channel is connected to the molding cavity 30 on the side away from the protruding cavity 31. The first slider assembly 22 is provided with a pouring channel, which can not only shorten the distance between the pouring gate assembly 11 and the molding cavity 30 and improve the quality of aluminum die-casting, but also adjust the injection direction of the pouring gate assembly 11 so that the molten metal enters from the flat part of the molding cavity 30 and then fills the high-undulation part corresponding to the protruding cavity 31. Since the protruding cavity 31 is far away from the pouring gate assembly 11, the time for the molten metal to flow into the part of the protruding cavity 31 is long, and the temperature of the molten metal in the protruding cavity 31 is lower than the temperature of the pouring channel. During the cooling and molding process of the molten metal, the problems of shrinkage holes and pore defects of the molten metal can be reduced, and the molding quality of the workpiece 40 can be improved.

[0039] like Figures 2 to 6 As shown, the first slider assembly 22 includes a sliding core seat 223 sliding on the movable mold core seat 24, a sliding block 222 fixed to the sliding core seat 223, a high temperature resistant part 221 embedded in the sliding block 222, and a telescopic element connected to the sliding block 222. The movable mold device 20 includes at least one spot cooling assembly 225 plugged into the sliding block 222, the spot cooling assembly 225 extends into the high temperature resistant part 221, and the high temperature resistant part 221 is located in the injection direction of the pouring port assembly 11. The telescopic element is installed on the movable mold base 21, and the output shaft of the telescopic element is connected to the movable mold core seat 24 and drives the movable mold core seat 24 to slide. Optionally, the telescopic element is an oil cylinder or a pneumatic cylinder.

[0040] The high temperature resistant part 221 is made of high temperature resistant material and can withstand the high temperature and high pressure impact of the molten metal. Preferably, the cross-section of the high temperature resistant part 221 is larger than the aperture of the pouring nozzle assembly 11, so that the high temperature resistant part 221 can fully receive the molten metal output by the pouring nozzle assembly 11. Preferably, a guide notch and a diverter boss 2211 protruding from the bottom of the guide notch are provided on one side of the high temperature resistant part 221, and the diverter boss 2211 is curved and protrudes toward one side of the pouring nozzle assembly 11. The high temperature resistant part 221 is embedded and installed in the sliding block 222, which can not only reduce the material volume required for the high temperature resistant part 221 and reduce costs, but also facilitate partial replacement when the high temperature resistant part 221 is deformed, thereby improving the overall service life of the mold.

[0041] Furthermore, the spot cooling assembly 225 is installed on the sliding block 222 and extends into the high temperature resistant part 221, so as to cool the sliding block 222 and the high temperature resistant part 221 to avoid deformation due to excessive temperature. The spot cooling assembly 225 slides on the sliding block 222 and always keeps the high temperature resistant part 221 cooled, and the stable control effect is good.

[0042] Preferably, the spot cooling component 225 is provided as one, and the center of the spot cooling component 225 coincides with the center line of the high temperature resistant component 221 to form balanced cooling. The high temperature resistant component 221 is provided with a cooling cavity, and the spot cooling component 225 is connected to the cooling cavity. The space of the cooling cavity is larger than the aperture of the spot cooling component 225 to achieve overall cooling.

[0043] Preferably, the sliding core seat 223 and the sliding block 222 are provided with a mounting hole 2221, and the high temperature resistant part 221 is inserted into the mounting hole 2221, so that the high temperature resistant part 221 can transfer heat to the sliding core seat 223 and the sliding block 222, so as to expand the heat conduction effect. Further preferably, the mounting hole 2221 is formed by closing the sliding block 222 and the sliding core seat 223, the hole area of ​​the sliding block 222 is larger than the hole area of ​​the sliding core seat 223, the high temperature resistant part 221 is limited to the sliding block 222 and extends to the sliding core seat 223, and the distance between the high temperature resistant part 221 and the molding cavity 30 is shortened, thereby shortening the flow length of the molten metal.

[0044] In one embodiment, the sliding core seat 223 includes a guide surface 2231 facing one side of the fixed mold device 10, and the guide surface 2231 is a plane. The fixed mold core seat 15 is provided with a plurality of guide channels 12 connected to the pouring channel, and the guide channels 12 are recessed on the surface of the fixed mold core seat 15 to form a groove structure, and the guide channels 12 are divided from the center to the periphery, thereby forming a total metal liquid flow structure. When the movable mold device 20 is closed to the fixed mold device 10, the fixed mold core seat 15 is closed to the guide surface 2231, so that the guide channels 12 form a total flow channel structure. For example, at the confluence of the pouring port assembly 11 connected to the plurality of guide channels 12, four guide channels 12 are provided, and the four guide channels 12 are symmetrically distributed to be evenly connected to the molding cavity 30. Preferably, a release agent is attached to the surface of the guide surface 2231, and the release agent is attached to the guide surface 2231 to facilitate the demolding of the workpiece 40.

[0045] Further preferably, a counterflow groove 16 is provided on the fixed mold core seat 15, and the counterflow groove 16 is centrally arranged and is a groove structure connected to the molding cavity 30. The counterflow groove 16 is spaced apart from the guide channel 12, and the counterflow groove 16 is located at the symmetrical center of the guide channel 12. The counterflow groove 16 can overflow the metal liquid in the molding cavity 30, thereby improving the molding quality of the workpiece 40 and centrally compensating the molding cavity 30.

[0046] Furthermore, the sliding core seat 223 includes a first molding surface 2232 facing the direction of the second slider assembly 23, and the first molding surface 2232 is located at the end of the sliding core seat 223. The first molding surface 2232 is concave from the guide surface 2231 to the other edge direction, and the cavity between the first molding surface 2232 and the second slider assembly 23 constitutes a convex cavity 31. The first molding surface 2232 is a curved surface structure with undulating changes, and the width of the convex cavity 31 gradually decreases from the guide surface 2231 to the other edge direction. The molten metal flows from the guide surface 2231 to the convex cavity 31 formed by the first molding surface 2232, thereby forming a trumpet-shaped injection space, which can not only improve the injection pressure and filling quality, but also change the flow direction of the molten metal, so that the part with a large filling slope is located at the rear end of the molten metal filling. The convex cavity 31 is filled when the molten metal temperature is slightly low, thereby reducing the shrinkage rate and defects such as pores.

[0047] In addition, the first molding surface 2232 is provided with a partially concave molding portion 2233, and part of the second slider assembly 23 is inserted into the molding portion 2233 to form a functional cavity with the wall surface of the molding portion 2233. The molding portion 2233 can be set as a pit structure or a convex structure, and a space for accommodating part of the second slider assembly 23 can be formed in the molding portion 2233 to correspond to the functional area 43 of the molding workpiece 40. Preferably, the molding area is close to the guide surface 2231 to improve the filling effect.

[0048] like Figures 1 to 7 As shown, in one embodiment, the movable mold base 21 is provided with a concave sliding groove 211, and the first slider assembly 22 and the second slider assembly 23 slide at the two ends of the sliding groove 211 respectively. The protruding frame cavity 31 extends to both sides along the surface of the movable mold core seat 24 to form a cavity space corresponding to the bottom frame portion 41. The length of the cavity space of the bottom frame portion 41 is greater than the length of the protruding frame cavity 31, and the width of the cavity space of the bottom frame portion 41 is greater than the width of the protruding frame cavity 31. Part of the cavity space corresponding to the bottom frame portion 41 is set in the movable mold core seat 24, that is, the high relief workpiece 40 is formed by the sliding core seat 223, the molding core seat 232, the movable mold core seat 24 and the fixed mold core seat 15. The integrated cavity can adapt to the complex cavity structure.

[0049] Further, the movable mold base 21 includes a concave column groove 2234 formed by the bottom depression of the sliding groove 211 and an annular convex rib surrounding the concave column groove 2234, the annular convex rib has an arc-shaped cross-section, and the concave column groove 2234 is located in the convex frame cavity 31. The concave column groove 2234 is located at the bottom of the sliding groove 211 and avoids the sliding area of ​​the first slider assembly 22 and the second slider assembly 23. The concave column groove 2234 can accommodate molten metal, thereby forming a columnar convex column on the workpiece 40. The annular convex rib is arranged around the concave column groove 2234, and accordingly, an air-avoiding groove surrounding the convex column is formed on the workpiece 40, thereby improving the insertion accuracy of the convex column and avoiding pressure concentration. Preferably, the concave column groove 2234 is located on both sides of the first slider assembly 22 and the second slider assembly 23, and the concave column groove 2234 is located at the bottom of the convex frame cavity 31, so that demoulding is convenient.

[0050] The sliding groove 211 guides the first slider assembly 22 and the second slider assembly 23 to slide. Optionally, the sliding heights of the first slider assembly 22 and the second slider assembly 23 are the same. In another embodiment, the sliding heights of the first slider assembly 22 and the second slider assembly 23 are different. Among them, the movable mold core seat 24 is provided with a plurality of first slide grooves 212 and a plurality of second slide grooves 213 distributed at intervals. The plurality of first slide grooves 212 and the plurality of second slide grooves 213 are located at the bottom of the sliding groove 211, forming a plurality of groove guide structures distributed at intervals, further improving the sliding stability of the first slider assembly 22 and the second slider assembly 23, and realizing automatic deviation correction.

[0051] The first slider assembly 22 slides in the first slide groove 212, and the second slider assembly 23 is slidably connected to the second slide groove 213. The first slide groove 212 and the second slide groove 213 have a height difference, and the sliding distance of the first slider assembly 22 and the second slider assembly 23 is controllable. The convex cavity 31 is located at the intersection of the first slide groove 212 and the second slide groove 213, and the cavity structure and end features of the convex cavity 31 are controllable. Preferably, the bottom of the first slide groove 212 and the bottom of the second slide groove 213 are relatively inclined to form a central depression to facilitate the convergence of molten metal.

[0052] Furthermore, at least a portion of the first chute 212 is provided with a closed molten pool 214, and the closed molten pool 214 extends toward one side of the first slider assembly 22. The closed molten pool 214 is a slag ladle structure for accommodating molten metal, and the first slider assembly 22 slides to the first chute 212 to close the opening of the closed molten pool 214, leaving only the edge portion in communication with the boss cavity 31. Since the closed molten pool 214 extends toward one side of the first slider assembly 22 and is located at the bottom of the first chute 212, its molten metal can provide supplementary molten metal to one side of the cold-shrinking portion in the boss cavity 31, thereby ensuring the molding quality of the boss cavity 31.

[0053] Furthermore, at least part of the second chute 213 is provided with an open molten pool 215, which extends toward the second slider assembly 23 and extends to the movable mold base 21 through the overflow channel 216. The open molten pool 215 and the closed molten pool 214 are respectively located on both sides of the convex cavity 31, so as to supplement the convex cavity 31 from both sides. It is worth mentioning that the open molten pool 215 is connected to the exhaust assembly on the movable mold base 21 through the overflow channel 216, which can discharge the gas in the chamber and keep the slag bag in the molten metal discharged, thereby improving the molding quality of the workpiece 40.

[0054] Preferably, the first chute 212 and the second chute 213 correspond to each other, that is, the corresponding first chute 212 and the second chute 213 are in the same straight line, so as to guide the first slider assembly 22 and the second slider assembly 23 to slide in a straight line relative to each other. The first chute 212 and the second chute 213 are groove guide structures distributed at the bottom of the sliding groove 211, and correspondingly, the closed molten pool 214 and the open molten pool 215 are respectively distributed at the bottom of the sliding groove 211, so that the molten metal enters from the pouring port assembly 11 and flows along the convex cavity 31, and part of the molten metal enters the closed molten pool 214 and the open molten pool 215 on both sides, so as to realize the rapid and full filling of the molten metal.

[0055] like Figures 2 to 6 As shown, in one embodiment, the movable mold device 20 includes a lateral cooling component 224, which extends from the sliding block 222 to the sliding core seat 223. The sliding core seat 223 is provided with an annular flow channel, and the annular flow channel is arranged around the end surface of the sliding core seat 223. The lateral cooling component 224 is installed on the first slider assembly 22 and slides with the first slider assembly 22. The lateral cooling component 224 extends from the sliding block 222 to the sliding core seat 223, and can cool the entire body in the length direction. The lateral cooling component 224 and the point cooling component 225 cool the first slider assembly 22 together, so that the metal liquid circulation temperature around the first slider assembly 22 can be controlled by comprehensive temperature to maintain the molding stability. In addition, the annular flow channel is arranged in the sliding core seat 223 and is an annular flow channel, and the cooling area is large. The annular flow channel is located on the inner side of the first molding surface 2232 to quickly cool the first molding surface 2232, and the cooling area has a priority and the cooling range is controllable.

[0056] Furthermore, the movable mold device 20 includes a plurality of bottom cooling assemblies arranged in parallel, and the bottom cooling assemblies are installed on the movable mold base 21 and distributed on both sides of the boss cavity 31. The bottom cooling assembly uses a spot cooling method to control the cooling sequence and cooling area of ​​the boss cavity 31, thereby effectively controlling the cooling trend and cooling direction of the molten metal at the boss cavity 31. A plurality of bottom cooling assemblies are distributed along both sides of the boss cavity 31, and at least two bottom cooling assemblies are provided on each side of the boss cavity 31, so as to cool the boss cavity 31 at intervals. Moreover, the bottom of the cooling hole corresponding to the bottom cooling assembly faces the cavity space corresponding to the base portion 41, so as to achieve cooling at the wall thickness. Preferably, the bottom cooling assemblies are symmetrically distributed along the bottom of the movable mold device 20 to evenly reduce the temperature.

[0057] In one embodiment, the second slider assembly 23 includes a molding core seat 232 sliding on the movable mold core seat 24 and a linear drive element connected to the molding core seat 232. The linear drive element can be an oil cylinder or an air cylinder. The linear drive element drives the molding core seat 232 to slide linearly and directional along the second slide groove 213. Preferably, a connecting block 231 is provided between the molding core seat 232 and the linear drive element.

[0058] The molding core seat 232 includes a second molding surface 2322 located at the end and a demoulding surface 2321 intersecting the second molding surface 2322. The second molding surface 2322 partially protrudes to form at least one plug-in boss, and the plug-in boss is inserted into the first slider assembly 22. The second molding surface 2322 is combined with the plug-in boss to construct the lateral molding of the boss portion 42, wherein the plug-in boss is set as a rectangular boss or a boss structure matching the plug to construct an assembly connection structure. Preferably, the second molding surface 2322 partially protrudes to form a positioning column, and the end of the positioning column abuts against the first molding surface 2232, which not only constitutes the end positioning, but also can realize the hole structure molding of the boss portion 42.

[0059] Furthermore, the fixed mold core seat 15 is provided with a plurality of slag discharge grooves 13 facing the demolding surface 2321, and the slag discharge grooves 13 are connected to the movable mold base 21 through the slag discharge channel. The fixed mold core seat 15 is provided with a recessed slag discharge groove 13, and the opening of the slag discharge groove 13 is closed with the demolding surface 2321 in the mold closing posture, thereby forming a molten pool structure. Preferably, the open molten pool 215 provided on the movable mold base 21 is connected with the overflow channel 216 of the slag discharge groove 13 through the overflow channel 216. That is, the molten pool structure is provided on both opposite sides of the molding core seat 232, so that the molding cavity 30 can be supplemented with molten metal from the upper and lower ends, and the slag can be discharged immediately, the molding effect is good, and the exhaust and slag discharge are controllable.

[0060] It is worth mentioning that the closed molten pool 214 and the slag discharge trough 13 are arranged on the fixed mold core seat 15. During the telescopic sliding process of the first slider assembly 22 and the second slider assembly 23, the material handle can be separated from the corresponding forming plane, thereby facilitating the overall separation of the workpiece 40 from the movable mold device 20, realizing an automatic material handle separation design.

[0061] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0062] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A molding die for a high-contact workpiece, the molding die is used for aluminum die-casting molding of the high-contact workpiece, the high-contact workpiece comprises a long plate-shaped bottom frame, a convex frame protruding from the bottom frame, and functional areas distributed on two sides opposite to the convex frame, the convex frame is close to one side of the bottom frame, the height of the convex frame is greater than or equal to half of the width of the bottom frame, the functional area comprises a functional hole and / or a functional boss, the molding die comprises a movable mold device and a fixed mold device, characterized in that: The movable mold device comprises a movable mold base, a movable mold core seat embedded in the movable mold base, a first slider assembly and a second slider assembly slidably mounted on the movable mold base, the first slider assembly and the second slider assembly slide relative to each other, and at least a portion of the second slider assembly is inserted into the first slider assembly, a convex frame cavity corresponding to the convex frame portion is formed between the second slider assembly and the first slider assembly, and the second slider assembly is inserted into the gap of the first slider assembly to form a functional cavity corresponding to the functional area; The fixed mold device comprises a fixed mold base body, a fixed mold core base installed on the fixed mold base body and a pouring gate assembly, and the cavity between the fixed mold core base, the movable mold core base, the first slider assembly and the second slider assembly constitutes a molding cavity; The first slider assembly is provided with a pouring channel, the pouring channel is connected to the molding cavity and the pouring port assembly when the first slider assembly and the second slider assembly are closed, and the pouring channel is connected to the molding cavity away from the side of the protruding frame cavity; The first slider assembly includes a sliding core seat sliding on the movable mold core seat, a sliding block fixed to the sliding core seat, a high temperature resistant part embedded in the sliding block, and a telescopic element connected to the sliding block, the movable mold device includes at least one spot cooling assembly plugged into the sliding block, the spot cooling assembly extends into the high temperature resistant part, and the high temperature resistant part is located in the injection direction of the pouring port assembly; The sliding core seat comprises a flow guide surface facing one side of the fixed mold device, the flow guide surface is a plane, the fixed mold core seat is provided with a plurality of flow guide channels connected with the pouring channel, the flow guide channels are closed to the flow guide surface in the mold closing posture, and a release agent is attached to the surface of the flow guide surface; The sliding core seat comprises a first molding surface facing the second slider assembly, the first molding surface is curved and concave from the guide surface to the other edge direction, the cavity between the first molding surface and the second slider assembly constitutes a convex cavity, and the width of the convex cavity gradually decreases from the guide surface to the other edge direction; The first molding surface is provided with a partially concave molding portion, and part of the second sliding block assembly is inserted into the molding portion to form a functional cavity with the wall surface of the molding portion; The movable mold core seat is provided with a plurality of first slide grooves and a plurality of second slide grooves which are spaced apart from each other, the first slider assembly slides in the first slide groove, the second slider assembly is slidably connected to the second slide groove, the protrusion cavity is located at the intersection of the first slide groove and the second slide groove, at least part of the first slide groove is provided with a closed molten pool, the closed molten pool extends toward one side of the first slider assembly, at least part of the second slide groove is provided with an open molten pool, the open molten pool extends toward the second slider assembly and extends to the movable mold base through the overflow channel.

2. The molding die according to claim 1, characterized in that: The movable mold device includes a lateral cooling component, which extends from the sliding block to the sliding core seat. An annular flow channel is arranged in the sliding core seat, and the annular flow channel is arranged around the end surface of the sliding core seat.

3. The molding die according to claim 1, characterized in that: The movable mold device comprises a plurality of bottom cooling components arranged in parallel, wherein the bottom cooling components are installed on the movable mold base and distributed on both sides of the convex frame cavity.

4. The molding die according to claim 1, characterized in that: The second slider assembly includes a molding core seat sliding on the movable mold core seat and a linear drive element connected to the molding core seat, the molding core seat includes a second molding surface located at the end and a demolding surface intersecting with the second molding surface, the second molding surface is partially protruded to form at least one plug-in boss, and the plug-in boss is inserted into the first slider assembly, the fixed mold core seat is provided with a plurality of slag discharge grooves facing the demolding surface, and the slag discharge grooves are connected to the movable mold base through a slag discharge channel.

5. The molding die according to claim 1, characterized in that: The movable mold base is provided with a concave sliding groove, the first slider assembly and the second slider assembly slide at the two ends of the sliding groove respectively, and the protruding frame cavity extends to both sides along the surface of the movable mold core seat to form a cavity space corresponding to the bottom frame part.

6. The molding die according to claim 5, characterized in that: The movable mold base includes a concave column groove formed by the bottom depression of the sliding groove and an annular convex rib surrounding the concave column groove, the annular convex rib has an arc-shaped cross-section, and the concave column groove is located in the convex frame cavity.

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