Insert sheet type mold for improving mold filling of casting fin structure

Abstract

The utility model relates to an insert type mold for improving casting fin structure mold filling. The insert type mold comprises a static mold frame and a movable mold frame, a static mold core and a movable mold core are respectively arranged on the static mold frame and the movable mold frame; a product forming cavity and a pouring gate are formed between the static mold core and the movable mold core; an insert die is arranged in the middle of the movable die core; the insert die is formed by arranging a plurality of inserts in sequence, and every two adjacent inserts jointly form a thin rib position cavity of a product. And the assembling clearance between the adjacent embedding sheets is 0.02 to 0.5 mm. According to the utility model, the insert type mold is formed by combining the sheet-shaped inserts one by one, and the gap between every two adjacent inserts is reserved in a range of 0.02-0.5 mm and about 5-10 mm in depth, so that air escape is realized, and molten aluminum is prevented from blocking the gap. Due to the fact that a thin-wall product is extremely easy to solidify too early due to low temperature in the filling process, and insufficient casting and insufficient meat are caused, the temperature of the fins of the mold can be kept at a high level through heating treatment of the two heat conduction pipes and the mold temperature controller.

Description

Technical Field

[0001] The utility model relates to the field of aluminum alloy casting, in particular to an inlaid sheet type mold for improving the filling of a casting fin structure. Background Art

[0002] With the rapid development of industry, industrial air compressors are also widely used. The key components of air compressors and air conditioning refrigeration compressors: scroll disks, including movable scroll disks and static scroll disks, are related to the working performance of the entire machine. The current forming processes of movable and static disks include ordinary die casting, semi-solid die casting, extrusion casting and other methods. The effect of ordinary die casting is very poor, with many pores, bubbling in key parts after heat treatment, and low yield; the forming method of semi-solid die casting has a low yield, air entrapment cannot be solved, and the production capacity cannot meet production needs; the slow and high-pressure forming method of extrusion casting is better, but the design of its extrusion casting process and mold is unreasonable, and the extrusion casting production process is not strictly controlled. The products produced have defects such as insufficient pouring, cold shut, air entrapment, inclusions and air entrapment, which cannot meet the use needs of customers.

[0003] Die-casting of a scroll disk including heat dissipating fins is more difficult. For example, the structure of such a movable scroll disk includes a scroll surface and a heat dissipating fin surface, and the structure of the heat dissipating fin surface includes numerous thin rib structures. It is difficult for the aluminum alloy liquid to completely fill the cavity during die-casting, which makes casting difficult. At the same time, such thin rib structures are prone to premature solidification at low temperatures during the filling process due to their thin structure, resulting in defects such as under-casting and lack of meat. Correspondingly, casting products containing such thin rib structures all have this technical problem. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides an inlaid sheet type mold for improving the filling of the fin structure of the casting.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0006] A mosaic die for improving the filling of a casting fin structure comprises a static die frame and a dynamic die frame; the static die frame and the dynamic die frame are respectively provided with a static die core and a dynamic die core; a molding cavity and a runner of a product are formed between the static die core and the dynamic die core; an mosaic die is provided in the middle of the dynamic die core; the mosaic die is formed by a plurality of mosaics arranged in sequence, and two adjacent mosaics jointly form a cavity at a thin rib of the product; an assembly gap between adjacent mosaics is 0.02-0.5mm.

[0007] Furthermore, the runner is connected to the feed barrel.

[0008] Furthermore, a positioning column is provided between the movable mold frame and the static mold frame.

[0009] Furthermore, four positioning columns are provided, which are respectively arranged at four corners of the movable mold frame and the static mold frame.

[0010] Furthermore, a plurality of heat-conducting pipes are provided in the insert mold.

[0011] Furthermore, the heat conducting pipe runs through the movable mold frame, the movable mold core, and the insert mold at the same time.

[0012] Furthermore, the heat conducting pipe is perpendicular to the butt end surface of the insert.

[0013] Furthermore, a limiting groove is provided at the bottom of the insert; and a limiting block cooperating with the limiting groove is provided in the movable mold frame.

[0014] Furthermore, a plurality of positioning rods penetrating the insert mold are provided at the lower portion of the insert mold; the length direction of the positioning rods is perpendicular to the butt joint end surface of the insert.

[0015] Furthermore, a plurality of slag entrainment grooves are formed on the movable mold core and are located in the circumferential direction of the insert mold; and exhaust ducts are connected to the slag entrainment grooves.

[0016] The beneficial effects of the utility model are as follows: since the heat dissipation fins of the product are relatively thin and have a high height, it is extremely easy to cause air entrapment and air curling in the product, resulting in undercasting and lack of meat in the product. In view of the air entrapment problem, a plate-type mold is designed, which is composed of a piece of sheet-like plates. The gap between the plates is reserved for 0.02-0.5mm, and the depth is about 5-10mm, for the escape of air to avoid the aluminum liquid blocking the gap. Then, the mold is assembled in a tight fixing manner. Advantages of blade molds: Products with deep cavities and thin-walled / thin-rib parts can escape the air through the gap between the plates, avoiding gas being trapped in the thin-walled / thin-rib structure and unable to escape. In addition, since thin-walled / thin-rib products are relatively high and thin, they are very likely to solidify prematurely due to the low temperature during the filling process, resulting in undercasting and lack of meat. Through two heat pipes and the heating treatment of the mold temperature controller, the temperature of the fins of the mold is kept at a high level. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is an exploded schematic diagram of the mold structure of the utility model;

[0019] Figure 2It is a schematic diagram of the explosion structure of the movable mold core and the static mold core of the utility model;

[0020] Figure 3 This is a schematic diagram of the explosion structure of the movable mold frame of the utility model;

[0021] Figure 4 It is a schematic cross-sectional view of the movable mold frame of the utility model;

[0022] Description of reference numerals:

[0023] 100, movable mold frame; 110, movable mold core; 111, slag bag groove; 112, exhaust duct; 113, heat pipe; 1131, first connecting part; 1132, second connecting part; 120, insert mold; 121, insert; 122, limit groove; 123, positioning rod; 124, limit block; 125, cavity at thin rib; 126, butt end face; 200, static mold frame; 210, static mold core; 300, product; 301, slag bag; 310, molding cavity; 320, runner; 330, feed barrel; 340, positioning column. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are 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 making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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.

[0027] Example:

[0028] A mosaic die for improving the filling of a casting fin structure, comprising a static die frame 200 and a dynamic die frame 100; a static die core 210 and a dynamic die core 110 are respectively provided on the static die frame 200 and the dynamic die frame 100; a molding cavity 310 and a runner 320 of a product 300 are formed between the static die core 210 and the dynamic die core 110; a mosaic die 120 is provided in the middle of the dynamic die core 110; the mosaic die 120 is formed by a plurality of mosaics 121 arranged in sequence, and two adjacent mosaics 121 jointly form a thin rib cavity 125 of the product 300; the assembly gap between adjacent mosaics 121 is 0.02-0.5 mm;

[0029] like Figure 1-4 As shown, in one embodiment, the product 300 is a movable scroll disk, and a heat dissipation fin is provided at the bottom of the movable scroll disk; the runner 320 is connected to the feed barrel 330; during filling, the molten liquid enters from the feed barrel 330, passes through the runner 320, fills the molding cavity 310, and forms the product 300; in one embodiment, the movable mold core 110 is formed with a plurality of slag bag grooves 111 located in the circumferential direction of the insert mold 120; the slag bag grooves 111 are connected with exhaust channels 112, and the residual material during casting enters the slag bag grooves 111 to form a slag bag 301, and the exhaust channels 112 are used to quickly exhaust air during filling, reduce the gas in the product 300 during casting, and avoid trapped air and air entrainment of the product 300, which may cause undercasting and lack of meat in the product 300. ; In order to better pour and ensure the fluidity of the molten metal, the extension direction of the runner 320 is consistent with the extension direction of the cavity 125 at the thin rib; similarly, in one embodiment, the product 300 can be a static vortex disk, and the bottom of the static vortex disk is also provided with heat dissipation fins; therefore, it is only necessary to change the shape of the molding cavity 310 to adapt to the static vortex disk. In order to further improve the quality of the static vortex disk, considering that the shape of the static vortex disk is different from that of the movable vortex disk, the shape of the runner 320 can also be appropriately modified; it should be noted that the mold structure of the present invention is not only applicable to movable vortex disks or static vortex disk products, but is applicable to related castings containing thin-walled / thin-rib structures, all of which can be produced using the mold of the structure of the present utility model.

[0030] In one embodiment, due to the thin structure of the thin rib structure during the filling process, it is easy to solidify prematurely at a low temperature, resulting in defects such as undercasting and lack of meat, that is, the gas of the thin rib structure such as the fin is not easy to be discharged during die casting, and the temperature drops rapidly, which is easy to cause defects such as undercasting and lack of meat; by arranging a plurality of penetrating heat pipes 113 in the insert mold 120, hot oil is passed through the heat pipes 113, and the fin temperature of the mold is maintained at a high level through the heating treatment of the mold temperature controller, so as to avoid the fin from cooling too fast, and the assembly gap between the adjacent inserts 121 can facilitate the gas discharge at the fin, and the gas can escape from the air through the gap between the inserts 121 and the inserts 121, thereby reducing the occurrence of defects; in one embodiment, the heat pipe 113 is arranged to penetrate the movable mold frame 100, the movable mold core 110, and the insert mold 120 at the same time, so that the end of the heat pipe 113 can be conveniently connected to the heating oil circuit; in one embodiment, the heat pipe 113 is a heating pipe, which heats the temperature of the mold by the heat generated by itself.

[0031] In one embodiment, if Figure 4As shown, the heat pipe 113 includes a first connection portion 1131 and two second connection portions 1132 connected at both ends of the first connection portion 1131. The first connection portion 1131 and the second connection portion 1132 are both tubular structures; the first connection portion 1131 is located in the movable mold core 110 and penetrates the insert mold 120, and the second connection portion 1132 is located in the movable mold frame 100. The first connection portion 1131 and the second connection portion 1132 are connected by plugging to form the heat pipe 113. This connection can simplify the heat pipe 113. 13 is difficult to install. When the heat pipe 113 is an integrated structure, the heat pipe 113 needs to penetrate the movable mold frame 100, the movable mold core 110, and the insert mold 120 at the same time. Therefore, there is a high requirement for the coaxiality of the through holes set on the movable mold frame 100, the movable mold core 110, and the insert mold 120, and the installation difficulty is also relatively large. Through the split structure of the heat pipe 113, the first connecting part 1131 can be firstly penetrated through the movable mold core 110 and the insert mold 120, and then the second connecting part 1132 can be inserted into the movable mold frame 100 from the outside and connected with the first connecting part 1131. The end parts are plugged in to reduce the difficulty of installation; on the other hand, since the first connecting part 1131 needs to increase the heat conduction efficiency by being in close contact with the movable mold core 110 and the insert mold 120, the matching clearance between the first connecting part 1131 and the movable mold core 110 and the insert mold 120 is small, and the movable mold frame 100 does not have a high demand for heat, so the matching clearance between the through hole set on the movable mold frame 100 and the second connecting part 1132 can be larger, which can also facilitate the second connecting part 1132 to be quickly inserted and docked with the first connecting part 1131, reducing the difficulty of installation and processing. In another embodiment, the first connection part 1131 can be only arranged in the insert mold 120, and the second connection part 1132 can be arranged in the movable mold frame 100 and the movable mold core 110, which can also achieve the effect of rapid installation and disassembly. Since the insert mold 120 is the main part requiring heat, it is mainly necessary to ensure that the first connection part 1131 is tightly connected to the insert mold 120. The movable mold frame 100 and the movable mold core 110 are both provided with a through hole with a larger aperture than the second connection part 1132, so as to facilitate the plugging of the first connection part 1131 and the second connection part 1132.

[0032] In one embodiment, the heat pipe 113 is arranged perpendicular to the butt end face 126 of the insert 121. The butt end face 126 refers to the end face that is arranged opposite to each other when adjacent inserts 121 are installed. The heat pipe 113 is arranged perpendicular to the butt end face 126 of the insert 121, so that the heat pipe 113 can pass through each insert 121, and the heat in the heat pipe 113 can better act on each insert 121, thereby ensuring the uniformity of heating.

[0033] In one embodiment, a limiting groove 122 is provided at the bottom of the insert 121; a limiting block 124 is provided in the limiting groove 122 and cooperates with the limiting groove 122; the limiting block 124 is in the shape of an elongated strip, and the limiting block 124 simultaneously connects all the inserts 121 to achieve the limiting and guiding effect on the insert 121; during installation, the insert 121 cooperates with the limiting block 124 to limit the position, and can also slide relative to the length direction of the limiting block 124 to a certain extent, so that a gap of 0.02-0.5mm can be achieved between adjacent inserts 121 during assembly; the size of the gap between adjacent inserts 121 can be uneven, for example, some gaps can be 0.02-0.05mm, and some gaps can be 0.2-0.5mm, both of which can achieve effective exhaust effect at the thin rib structure;

[0034] In one embodiment, the lower part of the insert mold 120 is provided with a plurality of positioning rods 123 penetrating the insert mold 120; the length direction of the positioning rods 123 is perpendicular to the butt end surface 126 of the insert 121, and the positioning rods 123 can be used to pre-connect a plurality of inserts 121 in advance, which is convenient for subsequent fixation. Preferably, two positioning rods 123 are provided; the insert 121 is connected to the movable mold frame 100 by screws;

[0035] In one embodiment, a positioning column 340 is provided between the movable mold frame 100 and the static mold frame 200. Four positioning columns 340 are provided, respectively at four corners of the movable mold frame 100 and the static mold frame 200, so as to facilitate rapid positioning during mold closing.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A mosaic die for improving the filling of a casting fin structure, characterized in that: The invention comprises a static mold frame (200) and a dynamic mold frame (100); a static mold core (210) and a dynamic mold core (110) are respectively arranged on the static mold frame (200) and the dynamic mold frame (100); a molding cavity (310) and a runner (320) of a product (300) are formed between the static mold core (210) and the dynamic mold core (110); an insert mold (120) is arranged in the middle of the dynamic mold core (110); the insert mold (120) is formed by a plurality of inserts (121) arranged in sequence, and two adjacent inserts (121) jointly form a mold cavity (125) at a thin rib of the product (300); and an assembly gap between adjacent inserts (121) is 0.02-0.5 mm.

2. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 1, characterized in that: The pouring channel (320) is connected to the feeding barrel (330).

3. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 1, characterized in that: A positioning column (340) is provided between the movable mold frame (100) and the static mold frame (200).

4. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 3, characterized in that: Four positioning columns (340) are provided, which are respectively arranged at four corners of the movable mold frame (100) and the static mold frame (200).

5. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 1, characterized in that: The insert mold (120) is provided with a plurality of heat-conducting pipes (113) penetrating therein.

6. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 5, characterized in that: The heat conducting pipe (113) is arranged to penetrate the movable mold frame (100), the movable mold core (110), and the insert mold (120) at the same time.

7. The inlaid sheet mold for improving the filling of the fin structure of a casting according to claim 6, characterized in that: The heat conducting pipe (113) is perpendicular to the butt end surface (126) of the insert (121).

8. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 1, characterized in that: A limiting groove (122) is provided at the bottom of the insert (121); and a limiting block (124) cooperating with the limiting groove (122) is provided in the movable mold frame (100).

9. The inlaid sheet mold for improving the filling of the fin structure of a casting according to claim 1, characterized in that: The lower part of the insert mold (120) is provided with a plurality of positioning rods (123) penetrating the insert mold (120); the length direction of the positioning rods (123) is perpendicular to the butt end surface (126) of the insert (121).

10. The inlaid sheet mold for improving the filling of the casting fin structure according to claim 1, characterized in that: The movable mold core (110) is formed with a plurality of slag grooves (111) located in the circumferential direction of the insert mold (120); the slag grooves (111) are connected to exhaust passages (112).

Images