High-thermal-conductivity copper alloy glass hollow bottom die manufacturing device

Abstract

The invention discloses a high-thermal-conductivity copper alloy glass hollow bottom die manufacturing device, relates to the technical field of glass die manufacturing, and solves the problem that a cavity at the bottom of a hollow bottom die is difficult to machine and mold. The precoated sand mold comprises a precoated sand mold; a precoated sand core; the sand box mold comprises an upper mold body and a lower mold body, and at least two containing grooves used for containing precoated sand cores correspondingly, at least two branch runners communicating with the corresponding containing grooves correspondingly and a main runner communicating with the branch runners are formed in the upper surface of the lower mold body. A third cavity used for casting mold forming is formed between the precoated sand core and the inner wall of the containing groove. The hollow bottom die manufacturing device has the advantages of being simple in structure, easy to manufacture and the like, hollow bottom dies can be produced in batches, the cavities in the bottoms of the hollow bottom dies are integrally cast and formed through the die, only the outer sides of the cavities need to be subjected to finish machining subsequently, and the manufacturing difficulty of the hollow bottom dies is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass mold manufacturing, in particular to a high-thermal-conductivity copper alloy glass hollow bottom mold manufacturing device. BACKGROUND

[0002] The hollow bottom mold in the glass mold is the core role of realizing forced, efficient and uniform cooling of the key parts of the mold by circulating cooling medium (usually air or water) inside, so as to ensure the quality of glass products, improve production efficiency and prolong the service life of the mold itself.

[0003] Reference Figure 1 The cavity at the bottom of the hollow bottom mold has a fin-shaped cavity, which has the same effect as the fin and plays a role in rapid heat dissipation and cooling. In the prior art, this fin-shaped structure is located inside the cavity at the bottom of the hollow mold. Since the opening of the cavity is small, it is difficult to use machining to finish machining the fin-shaped structure on the hollow mold, and the machining difficulty is large and the dimensional accuracy is difficult to guarantee, so it is difficult to realize mass production. SUMMARY

[0004] The purpose of the present application is to solve the above problems, and a high-thermal-conductivity copper alloy glass hollow bottom mold manufacturing device is designed to solve the problem of difficult molding of the cavity at the bottom of the hollow bottom mold.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is a high-thermal-conductivity copper alloy glass hollow bottom mold manufacturing device, comprising: A coated sand mold, a first cavity for forming a coated sand core is formed in the coated sand mold, the coated sand core has a convex mold formed by protrusion, the convex mold is used to form a second cavity on the cast mold, and the shape of the convex mold is consistent with the shape of the cavity with a fin-shaped structure on the hollow bottom mold; A sand box mold, the sand box mold comprises an upper mold and a lower mold, the upper surface of the lower mold is formed with at least two accommodating grooves for respectively placing coated sand cores, at least two branch channels respectively communicating with the corresponding accommodating grooves, and a main channel communicating with the branch channels, a third cavity for forming a cast mold is formed between the coated sand core and the inner wall of the accommodating groove, and a pouring opening is formed in the upper mold; When the upper mold and the lower mold are closed, the pouring opening can communicate with the main channel, and the cast mold can be obtained by pouring metal liquid into the third cavity and cooling the metal liquid after forming.

[0006] Further, the coated sand mold comprises a left mold and a right mold, opposite sides of the left mold and the right mold have a mold groove matched with the shape of the coated sand core, and the left mold and the right mold can form the first cavity between the left mold and the right mold after being combined and fixed.

[0007] Further, the left and right molds are provided with heating pipes for heating the coated sand.

[0008] Further, the lower mold comprises a lower box body and black sand filled in the lower box body, and the upper surface of the compacted black sand is provided with a first mold rod for forming a branch runner, a second mold rod for forming a main runner, and at least two cylindrical molds for forming a containing groove respectively.

[0009] Further, the cylindrical mold is provided with four, and the first mold rod has four branch rods corresponding to the four cylindrical molds respectively.

[0010] Further, the bottom of the containing groove is provided with a chill, which is left in the containing groove after the cylindrical mold is embedded in the black sand and forms the containing groove.

[0011] Further, the upper side of the cylindrical mold is outwardly protruded to form a flange, the coated sand core comprises a disc and a convex mold protruded upward from the center of the disc, the flange is used for forming a sink pad on the upper side of the containing groove for bearing the disc, and the convex mold can be inverted in the containing groove, so that the third cavity is formed between the convex mold and the inner wall of the containing groove.

[0012] Further, the depth of the branch runner is greater than the depth of the sink pad, so that the casting liquid flows into the third cavity from the gap between the disc and the bottom surface of the branch runner.

[0013] Further, the upper mold comprises an upper box body and black sand filled in the upper box body, and a vertical rod for forming a pouring gate and a riser mold for forming a riser on the lower surface of the upper mold are vertically placed in the black sand, and the riser is located directly above the intersection of the two branch rods of the first mold rod.

[0014] Compared with the prior art, the beneficial effects are that: The hollow bottom mold manufacturing device provided in the application has the advantages of simple structure and easy manufacturing. The coated sand core is first produced by the coated sand mold, and then is inverted and placed in the containing groove in the sand box mold. The coated sand core cooperates with the inner wall of the containing groove to form a cavity. The copper liquid is poured into the mold through the pouring gate, flows along the main runner to the two branch runners respectively, and then flows into the corresponding cavities through the branch runners. Finally, the copper liquid is cooled and formed to form a casting mold. The convex mold of the coated sand core forms a cavity with a fin-shaped structure on the casting mold. Finally, the casting mold is further finished to obtain a hollow mold bottom. The sand box mold can cast at least two casting molds at a time, greatly improving the production efficiency of the hollow bottom mold.

[0015] The cavity of the hollow bottom mold is provided with a fin-shaped cavity, which greatly increases the heat dissipation area, is integrally cast into shape, greatly reduces the processing difficulty of the hollow bottom mold, and only needs to be finished on the outside. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a partial sectional view of the existing hollow bottom mold; Figure 2 is a schematic view of the overall structure of the coated sand mold after assembly; Figure 3 is a schematic view of the structure of the coated sand mold after pouring coated sand into the cavity after assembly; Figure 4 is a schematic view of the structure of the coated sand mold before assembly; Figure 5 is a schematic view of the structure of the coated sand core; Figure 6 is a schematic view of the structure of the sand box mold after assembly; Figure 7 is a schematic view of the structure of the sand core mold before assembly; Figure 8 is an exploded schematic view of the cooperation of various parts when the upper mold is made; Figure 9 is an exploded schematic view of the cooperation of various parts when the lower mold is made (the lower mold is in an inverted state); Figure 10 is a schematic view of the structure of the lower mold; Figure 11 is a schematic view of the structure of the cylindrical mold; Figure 12 is a schematic view of the structure of the first mold rod; Figure 13 is a schematic view of the structure before the upper mold and the lower mold are assembled after the coated sand core is placed into the lower mold; Figure 14 is a schematic view of the structure of the casting mold.

[0017] In the figure, 1, coated sand mold; 101, left mold; 102, right mold; 1001, mold groove; 1002, first cavity; 1003, hole; 1004, positioning hole; 1005, positioning pin; 2, coated sand core; 201, disc; 202, male die; 2021, die piece; 3, sand box mold; 301, upper mold; 3011, pouring gate; 3012, riser; 302, lower mold; 3021, containing groove; 30211, third cavity; 30212, undercrown; 3022, main runner; 3023, branch runner; 303, vertical rod; 304, riser die; 305, mold plate; 306, cylindrical die; 3061, flange; 3062, positioning part; 307, second die rod; 308, first die rod; 3081, support rod; 309, chill; 4, casting mold; 401, second cavity; 5, heating pipe; 6, handle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] A preferred embodiment of the present application provides a high-thermal-conductivity copper alloy glass hollow bottom mold manufacturing device, which is used for manufacturing a hollow bottom mold, and the hollow bottom mold is a component of a glass mold.

[0020] Specifically, referring to Figures 2-4 The manufacturing device mainly comprises a coated sand mold 1 used for manufacturing a coated sand core 2, a casting mold 4, and a sand box mold 3 used for manufacturing the casting mold 4, wherein the casting mold 4 is used for manufacturing the hollow bottom mold that we finally obtain.

[0021] The coated sand mold 1 mainly comprises a left mold 101 and a right mold 102, wherein the left mold 101 and the right mold 102 are both made of cast iron, and a mold groove 1001 is formed on the opposite side of the left mold 101 and the right mold 102, and the shapes of the two mold grooves 1001 are consistent with the shape of the coated sand core 2. When the left mold 101 and the right mold 102 are folded together, the two mold grooves 1001 will cooperate with each other to form a cavity, i.e., a first cavity 1002.

[0022] The left mold 101 and the upper mold 301 each have a semicircular groove on the upper surface, and the two semicircular grooves will form a circular groove after splicing, and the circular groove is used for forming the disc 201 on the coated sand core 2 as a part of the mold groove 1001.

[0023] Referring to Figure 5The coated sand core 2 comprises a disc 201 and a convex die 202 which is upwardly protruded from the center area of the disc 201 and has an outer shape which is matched with the outer shape of the hollow bottom mold. The convex die 202 has a plurality of die pieces 2021, and the adjacent two die pieces 2021 have a mold groove 1001 therebetween. The plurality of die pieces 2021 and the mold groove 1001 are matched to form a third mold cavity 30211 having a fin-shaped structure on the casting mold 4, and the shape of the third mold cavity 30211 is consistent with the shape of the hollow bottom mold which we finally want to obtain.

[0024] Referring to Figure 4 , two positioning pins 1005 and two positioning holes 1004 are arranged on the opposite sides of the left mold 101 and the right mold 102 respectively. When the left mold 101 and the right mold 102 are closed, the positioning pins 1005 are inserted into the corresponding positioning holes 1004, so that the left mold 101 and the right mold 102 are accurately positioned and closed.

[0025] Three holes 1003 are formed on the left mold 101 and the right mold 102 respectively, and the holes 1003 extend to the inner side of the molds. One heating pipe 5 is inserted into each hole 1003, and the three heating pipes 5 are uniformly distributed from top to bottom. The distance between the heating pipe 5 and the mold groove 1001 is close, so as to quickly transfer heat to the coated sand in the first mold cavity 1002 and make the coated sand quickly solidify.

[0026] Handles 6 are arranged on the outer sides of the left mold 101 and the right mold 102, so as to grasp the molds.

[0027] Referring to Figure 3 , after the left mold 101 and the right mold 102 are closed, the coated sand is poured into the first mold cavity 1002, so that the first mold cavity 1002 is completely filled with the coated sand, and then the surface of the coated sand in the circular groove is scraped flat. Then the heating pipe 5 is powered on to heat, so as to heat the coated sand and make the coated sand quickly solidify, and finally form the coated sand core 2. In this way, the coated sand mold 1 does not need to be put into a heating furnace for heating.

[0028] After the coated sand core 2 is cooled and formed, the left mold 101 and the right mold 102 are disassembled, and the coated sand core 2 is taken out, to obtain the coated sand core 2 as shown in Figure 5 .

[0029] As shown in Figure 6 , Figure 7 , the sand box mold 3 mainly comprises an upper mold 301 and a lower mold 302 which are closed together.

[0030] Referring to Figure 8 , Figure 13The upper mold 301 is mainly composed of an upper box (not shown in the figure) and black sand filled in the upper box. The upper and lower surfaces of the upper box are open. A mold plate 305 is placed at the bottom of the upper box. A vertical rod 303 and a riser mold 304 are fixed on the mold plate 305, and the vertical rod 303 and the riser mold 304 are respectively used to form a pouring opening 3011 and a riser 3012. The vertical rod 303 is a round rod, and the length of the vertical rod 303 is not less than the height of the upper box. The vertical rod 303 forms a pouring opening 3011 through the upper and lower surfaces of the black sand in the upper box, which is used to pour copper water into the mold. The riser mold 304 forms a riser 3012 on the lower surface of the black sand.

[0031] When the upper mold 301 is manufactured, the vertical rod 303 and the riser mold 304 are first fixed on the mold plate 305. Then, the upper box is placed on the mold plate 305. Then, the black sand is filled into the upper box. Finally, after the black sand is compacted tightly and evenly, the vertical rod 303, the riser mold 304, and the cushion plate are removed. Then, the peripheral upper box is removed. Thus, the upper mold 301 required by us is obtained.

[0032] The upper mold 301 formed after the black sand is compacted tightly has a certain structural strength and will not collapse.

[0033] Referring to Figures 9-13 The lower mold 302 is mainly composed of a lower box (not shown in the figure) and black sand filled in the lower box. The upper and lower surfaces of the lower box are also open. A mold plate 305 is placed at the bottom of the lower box. A first mold rod 308, a second mold rod 307, and four cylindrical molds 306 are fixed on the mold plate 305. The four cylindrical molds 306 are arranged in a rectangular array.

[0034] The second mold rod 307 is located between two of the four cylindrical molds 306. The front end of the second mold rod 307 has a cylindrical part, which corresponds to the position of the pouring opening 3011 on the upper mold 301. The other end of the second mold rod 307 is in contact with the first mold rod 308.

[0035] The second mold rod 307 is used to form a main runner 3022 on the upper surface of the lower mold 302. The first mold rod 308 is used to form four branch runners 3023 on the upper surface of the lower mold 302. The main runner 3022 is in communication with the four branch runners 3023. The four cylindrical molds 306 are used to form four cylindrical accommodation grooves 3021 on the upper surface of the lower mold 302. The four cylindrical accommodation grooves 3021 are used to place the coated sand core 2. The four branch runners 3023 are respectively in communication with the four cylindrical accommodation grooves 3021.

[0036] The cylindrical mold 306 is made of wood. A flange 3061 is formed on the outer circumferential surface of the cylindrical mold 306 and protrudes outwardly. The flange 3061 is used to form a sink 30212 on the upper side of the accommodating groove 3021. The sink 30212 is used to support the disc 201 of the coated sand core 2, so that the male mold 202 of the coated sand core 2 is suspended in the accommodating groove 3021, and finally a cavity, i.e. a third cavity 30211, is formed between the male mold 202 of the coated sand core 2 and the inner wall of the accommodating groove 3021. The flange 3061 on the cylindrical mold 306 will shield the upper side of the accommodating groove 3021.

[0037] A positioning portion 3062 is formed on the bottom center of the cylindrical mold 306 and protrudes downwardly. The positioning portion 3062 is inserted into the groove on the cold iron 309. The positioning portion 3062 is used to position the placement position of the cold iron 309.

[0038] When the lower mold 302 is manufactured, the four cylindrical molds 306 are first placed upside down (i.e. the end with the flange 3061 faces downwardly) on the mold plate 305. Then, the first mold rod 308 and the second mold rod 307 are placed upside down on the mold plate 305. The positions of the first mold rod 308 and the second mold rod 307 are accurately placed. Then, the four cold irons 309 are placed on the top of the four cylindrical molds 306 (i.e. the end with the positioning portion 3062 on the cylindrical mold 306). The cold irons 309 are positioned by the positioning portion 3062. Then, the lower box is placed on the mold plate 305. Then, the lower box is filled with black sand. After the black sand is compacted tightly and evenly, the entire mold is rotated by 180° and is placed upside down, so that the side with the mold plate 305 faces upwardly. Finally, the mold plate 305, the four cylindrical molds 306, the first mold rod 308 and the second mold rod 307 are removed. Finally, the main runner 3022, the four branch runners 3023 and the four accommodating grooves 3021 are formed on the upper surface of the compacted black sand. Finally, the peripheral lower box is removed, and the lower mold 302 required is obtained.

[0039] The cold irons 309 are still in the black sand, i.e. at the bottom of the accommodating groove 3021. The cold irons 309 are used to rapidly cool the molten copper during casting. The groove on the cold iron 309 is used to form the protrusion on the top of the hollow bottom mold.

[0040] The lower mold 302 formed after the black sand is compacted tightly has a certain structural strength and will not collapse.

[0041] It should be noted that the depth of the branch runner 3023 is greater than the depth of the sink 30212, so that after the coated sand core 2 is placed in the accommodating groove 3021, the branch runner 3023 can still communicate with the third cavity 30211 in the accommodating groove 3021, and the molten copper can flow into the third cavity 30211.

[0042] Referring toFigure 13 When the casting mold 4 is made, the four coated sand cores 2 are placed in the four accommodating grooves 3021 on the four lower molds 302 in turn by being inverted, the sink 30212 on the upper side of the accommodating groove 3021 bears the disc 201 of the coated sand core 2, and the convex mold 202 is invertedly hung in the accommodating groove 3021, so that a third cavity 30211 is formed in the accommodating groove 3021, which is used for forming the casting mold 4.

[0043] The upper mold 301 is rotated by 180°, and the side with the riser 3012 is placed downward on the upper mold 301, the pouring gate 3011 corresponds to the position of the front end of the main runner 3022, and the riser 3012 corresponds to the position of the intersection of the four branch runners 3023. Then, copper liquid is poured into the mold through the pouring gate 3011, the copper liquid flows along the main runner 3022, and then flows into the four branch runners 3023 in turn, and then flows into the third cavities 30211 in the four accommodating grooves 3021 through the four branch runners 3023 respectively. The copper liquid is partially poured into the riser 3012 at the bottom of the upper mold 301, and continuously supplies liquid to the four third cavities 30211. Until the four third cavities 30211 are filled with copper liquid. At the same time, there is a part of air in the runner and the accommodating groove 3021, which cannot be completely removed from the mold, and the part of air flows into the riser 3012 temporarily during pouring.

[0044] After the copper liquid is cooled and solidified, the upper mold 301 is removed, then the four coated sand cores 2 are removed, then the obtained blank is taken out of the upper mold 301, and finally the four casting molds 4 (i.e. the positions corresponding to the four coated sand cores 2) are cut from the blank.

[0045] As shown in Figure 14 , the convex mold 202 of the coated sand core 2 forms a cavity, i.e. a second cavity 401, on the casting mold 4. The second cavity 401 has a fin-shaped structure.

[0046] The casting mold 4 is a semi-finished product of a hollow bottom mold, and the outer surface of the casting mold 4 needs to be further finished, i.e. a hollow bottom mold is obtained. The second cavity 401 formed on the casting mold 4 is a cavity with a fin-shaped structure on the hollow bottom mold. The multiple mold pieces 2021 on the convex mold 202 of the coated sand core 2 are used for forming the fin-shaped structure in the cavity.

[0047] The above technical solution only embodies the preferred technical solution of the technical solution of the present application, and some changes made by the person skilled in the art to some parts of the present application also embody the principle of the present application and are within the protection scope of the present application.

Claims

1. A high thermal conductivity copper alloy glass hollow bottom mold manufacturing apparatus characterized by, The application relates to a coated sand mold (1) which is internally formed with a first cavity (1002) for forming a coated sand core (2), the coated sand core (2) being provided with a convex mold (202) formed by protrusion, the convex mold (202) being used for forming a second cavity (401) on a casting mold (4), the shape of the convex mold (202) being consistent with the shape of a cavity with a fin-shaped structure on a hollow bottom mold. The application relates to a sand box mold (3) which comprises an upper mold (301) and a lower mold (302), the upper surface of the lower mold (302) being formed with at least two containing grooves (3021) for respectively placing coated sand cores (2), at least two branch runners (3023) respectively communicating with the corresponding containing grooves (3021), and a main runner (3022) communicating with the branch runners (3023), the coated sand core (2) and the inner wall of the containing groove (3021) being formed with a third cavity (30211) for forming a casting mold (4), the upper mold (301) being internally formed with an upper and lower through pouring opening (3011). When the upper mold (301) and the lower mold (302) are closed, the pouring opening (3011) can communicate with the main runner (3022), and the casting mold (4) can be obtained by pouring metal liquid into the third cavity (30211) and cooling the metal liquid. The coated sand mold (1) comprises a left mold (101) and a right mold (102), the opposite sides of the left mold (101) and the right mold (102) being provided with mold grooves (1001) matched with the shape of the coated sand core (2), the left mold (101) and the right mold (102) being capable of forming the first cavity (1002) between the left mold (101) and the right mold (102) after being combined and fixed.

2. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 1, characterized by, The left mold (101) and the right mold (102) are internally provided with heating pipes (5) for heating the coated sand.

3. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 2, characterized by, The lower mold (302) comprises a lower box body and black sand filled in the lower box body, the upper surface of the compacted black sand being provided with a first mold rod (308) for forming the branch runner (3023), a second mold rod (307) for forming the main runner (3022) and at least two cylindrical molds (306) for forming the containing grooves (3021), the first mold rod (308) being provided with at least two branch rods (3081) for forming the branch runner (3023).

4. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 1, characterized in that, The cylindrical mold (306) is provided with four cylindrical molds (306), and the first mold rod (308) is provided with four branch rods (3081) corresponding to the four cylindrical molds (306).

5. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 4, characterized by, The bottom of the containing groove (3021) is provided with a chill (309), the chill (309) being left in the containing groove (3021) after the cylindrical mold (306) is embedded in the black sand and the containing groove (3021) is formed.

6. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 4, characterized in that, ​ 7. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 4, characterized by, The upper side of the cylindrical mold (306) is outwardly convex to form a flange (3061), the coated sand core (2) comprises a disc (201) and a convex mold (202) convexly formed from the center of the disc (201) upwardly, the flange (3061) is used to form a sink (30212) for bearing the disc (201) on the upper side of the accommodating groove (3021), the convex mold (202) can be inverted in the accommodating groove (3021), so that the third cavity (30211) is formed between the convex mold (202) and the inner wall of the accommodating groove (3021).

8. The high thermal conductive copper alloy glass hollow bottom mold manufacturing apparatus according to claim 7, characterized by, The depth of the branch runner (3023) is greater than the depth of the sink (30212), so that the casting liquid flows into the third cavity (30211) from the gap between the disc (201) and the bottom surface of the branch runner (3023).

9. The high thermal conductivity copper alloy glass hollow bottom mold manufacturing apparatus according to claim 1, wherein, The upper mold (301) comprises an upper box and black sand filled in the upper box, a vertical rod (303) for forming a pouring gate (3011) and a riser mold (304) for forming a riser (3012) on the lower surface of the upper mold (301) are vertically placed in the black sand, the riser (3012) is located directly above the intersection of the two supporting rods (3081) of the first mold rod (308).

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