Casting machine for high-precision magnesium-aluminum alloy

Abstract

The utility model relates to the field of casting machinery, in particular to a high-precision magnesium-aluminum alloy casting machine which comprises a support, a mold assembly and a feeding assembly. The mold assembly comprises a fixed mold plate fixedly arranged on the support and a movable mold part arranged on the support in a sliding mode, and the movable mold plate can abut against the fixed mold plate. The feeding assembly is arranged on the side, away from the movable mold piece, of the fixed mold plate in a communicating mode. The feeding assembly can feed high-temperature molten liquid metal to the position between the fixed mold plate and the movable mold piece for die casting. The die casting device further comprises a cut-off assembly. The cut-off assembly comprises a plurality of third hydraulic push rods and a plurality of square cutters. The third hydraulic push rod is arranged on the fixed mold plate, and the square cutter is arranged at the driving end of the third hydraulic push rod; a cutter cavity is formed in the communicating position of the fixed mold plate and the feeding assembly, the square cutters are connected into the cutter cavity in a sliding mode, and the plurality of square cutters can seal the cutter cavity. The casting machine has the effect of improving the die-casting precision of the casting machine.

Description

Technical Field

[0001] This application relates to the field of foundry machinery, and particularly to a casting machine for high-precision magnesium-aluminum alloys. Background Art

[0002] Casting is a metal hot working process, and a casting machine is a device that uses this process to die-cast high-temperature molten metal into die-castings of specific shapes.

[0003] During the production of die-castings of aluminum-magnesium alloys by a casting machine, first, the high-temperature molten liquid metal is temporarily stored in the die-casting cavity, then the high-temperature molten liquid metal in the die-casting cavity is die-cast into the mold cavity through a push rod, and after a period of time, the high-temperature molten liquid metal in the mold cavity is cooled to form a die-casting. Finally, the die-casting is taken out of the mold cavity.

[0004] Since the die-casting cavity and the mold cavity are connected, after die-casting the die-casting, the die-casting is located in the mold cavity, but a columnar gate will protrude at the connection between the mold cavity and the die-casting cavity. The shape of the gate is the same as that of the die-casting cavity. At the same time, the shorter the die-casting time and the higher the die-casting accuracy when the instantaneous flow rate of the high-temperature molten liquid metal in the die-casting cavity entering the mold cavity is larger. Therefore, the gate is often relatively large, but the gate does not belong to a part required for the die-casting. Therefore, after die-casting the die-casting, mechanical equipment such as a trimming machine, a punching press, a punching die, and a band saw machine are needed to remove the gate. Only after removing the gate can the die-casting be regarded as a standard die-casting.

[0005] Since the gate generated during the die-casting of die-castings by the casting machine is too large, the die-casting needs to be additionally processed to remove the gate, and a processing device of a corresponding size will be selected for the too-large gate. And in most cases, the larger the processing device, the lower the accuracy, and at the same time, the accuracy during processing is not as high as that when the casting machine integrally forms the die-casting. Therefore, when the gate generated by the casting machine during die-casting of die-castings is too large, it is easy to cause a decrease in the accuracy of the die-casting. Therefore, the casting accuracy of the casting machine still needs to be improved. Utility Model Content

[0006] In order to improve the die-casting accuracy of the casting machine, this application provides a casting machine for high-precision magnesium-aluminum alloys.

[0007] The casting machine for high-precision magnesium-aluminum alloys provided by this application adopts the following technical solutions:

[0008] A casting machine for high-precision magnesium-aluminum alloy, comprising a bracket, a die assembly and a feeding assembly; the die assembly includes a fixed template fixedly arranged on the bracket and a moving die member slidably arranged on the bracket, and the fixed template can be abutted by the moving template; the feeding assembly is communicatively arranged on one side of the fixed template away from the moving die member; the feeding assembly can feed high-temperature molten liquid metal between the fixed template and the moving die member for die casting,

[0009] It further includes a truncating assembly; the truncating assembly includes a plurality of third hydraulic push rods and a plurality of square cutting knives; the third hydraulic push rods are arranged on the fixed template, and the square cutting knives are arranged at the driving ends of the third hydraulic push rods;

[0010] A cutting knife cavity is arranged at the connection between the fixed template and the feeding assembly, the square cutting knives are slidably connected in the cutting knife cavity, and the plurality of square cutting knives can seal the cutting knife cavity.

[0011] By adopting the above technical scheme, the moving die member moves close to the fixed template until the fixed die member and the moving template are completely attached to form a die-casting cavity. Then the high-temperature molten liquid metal is fed between the fixed template and the moving die member through the feeding assembly for die casting. The plurality of hydraulic push rods drive the plurality of square cutting knives to abut in the cutting knife cavity, thereby truncating the gate, and further reducing the size of the gate, improving the die-casting precision of the casting machine.

[0012] Optionally, the side of the square cutting knife close to the moving template is adapted to the shape of the die of the die-casting part at the gate.

[0013] By adopting the above technical scheme, a model of the die-casting part at the intersection will be formed on the side close to the moving die member, so that the die-casting part can be directly integrally formed without subsequent processing, effectively improving the die-casting precision of the casting machine.

[0014] Optionally, the square cutting knife is made of superalloy material.

[0015] By adopting the above technical scheme, the superalloy has good high-temperature resistance and can prevent the square cutting knife from melting at high temperature.

[0016] Optionally, the die assembly further includes a guiding member, the guiding member includes a plurality of guiding rods arranged horizontally side by side on the bracket, the fixed template is fixedly arranged on the plurality of guiding rods, the moving die member is slidably arranged on the plurality of guiding rods, and the fixed template and the moving die member are arranged on the bracket through the plurality of guiding rods.

[0017] By adopting the above technical scheme, the guiding member can support the fixed template and guide the movement of the moving die member at the same time, so that the moving die member can accurately fit and press against the fixed template, improving the accuracy when the moving die member and the fixed template are connected.

[0018] Optionally, the mold assembly further includes a plurality of demolding members for demolding the die-cast part, and the plurality of demolding members are all arranged on the moving mold member.

[0019] By adopting the above technical solution, after the die-cast part is die-cast, the die-cast part cannot be demolded actively. By arranging the demolding members, it is convenient to demold the die-cast part, thereby improving the convenience during use.

[0020] Optionally, the demolding member is selected as a demolding electric cylinder. The demolding electric cylinder is arranged on the side of the moving mold member away from the fixed template. The telescopic end of the demolding electric cylinder penetrates through the moving mold member, and the end of the telescopic end of the demolding electric cylinder is adapted to the mold shape of the die-cast part at this position.

[0021] By adopting the above technical solution, by setting the end of the telescopic end of the mold electric cylinder to be adapted to the mold shape of the die-cast part at this position, it is possible to avoid changing the mold shape. When demolding, the demolding electric cylinder only needs to extend the telescopic end, and the die-cast part can be pushed out from the moving mold member, thus completing the demolding.

[0022] Optionally, the feeding assembly includes a temporary storage member communicated with the fixed template and a push rod member slidably penetrating through the temporary storage member; the push rod member can press the high-temperature molten liquid metal in the temporary storage member between the fixed template and the moving mold member.

[0023] By adopting the above technical solution, when feeding, only the high-temperature molten liquid metal needs to be fed into the temporary storage member for temporary storage, and the push rod member can press the high-temperature molten liquid metal into the fixed template and the moving mold member, thus completing the die-casting.

[0024] Optionally, the temporary storage member includes a material-containing column communicated with the fixed template and a feeding bin communicated with the material-containing column; the push rod member slidably penetrates through the material-containing column.

[0025] By adopting the above technical solution, when feeding, the high-temperature molten liquid metal is fed from the feeding bin, and the high-temperature molten liquid metal after feeding can flow into the material-containing column.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The fixed mold member and the moving template are completely attached to form a die-casting cavity. The high-temperature molten liquid metal is fed between the fixed template and the moving mold member for die-casting. A plurality of square cutting knives are abutted in the cutting knife cavity to cut off the cutting knife cavity, thereby cutting off the gate, reducing the size of the gate, and improving the die-casting accuracy of the casting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is the position installation diagram of the truncation component in the embodiment of the present application.

[0030] Reference signs: 1, bracket; 2, mold component; 21, fixed template; 211, second mold cavity; 22, moving mold part; 221, first hydraulic push rod; 222, moving template; 2221, first mold cavity; 23, guiding part; 231, bearing plate; 232, guiding rod; 24, demolding part; 3, feeding component; 31, installation base; 32, temporary storage part; 321, material containing column; 322, feeding bin; 33, push rod part; 331, end; 332, second hydraulic push rod; 4, truncation component; 41, third hydraulic push rod; 42, square cutter; 43, cutter cavity. Detailed implementation manners

[0031] The following further elaborates on the present application in conjunction with the attached Figure 1-2 drawings.

[0032] The embodiment of the present application discloses a casting machine for high-precision magnesium-aluminum alloy.

[0033] Referring to Figure 1 , the casting machine for high-precision magnesium-aluminum alloy includes a bracket 1, a mold component 2, a feeding component 3 and a truncation component 4. The mold component 2 is arranged on the bracket 1, and both the feeding component 3 and the truncation component 4 are arranged on the mold component 2. When casting, the feeding component 3 can feed high-temperature molten liquid metal into the mold component 2, and the truncation component 4 truncates the high-temperature molten liquid metal located between the mold component 2 and the feeding component 3.

[0034] Referring to Figure 1 , the mold component 2 includes a fixed template 21, a moving mold part 22, a guiding part 23 and a plurality of demolding parts 24. The guiding part 23 is arranged on the bracket 1, the fixed template 21 is fixedly connected to the guiding part 23, and the moving mold part 22 is slidably connected to the guiding part 23. And the moving mold part 22 can abut against the fixed template 21, a plurality of demolding parts 24 are arranged on the moving mold part 22, and the truncation component 4 is arranged on the fixed template 21.

[0035] The guiding part 23 includes two bearing plates 231 and a plurality of guiding rods 232. The two bearing plates 231 are fixedly connected to the bracket 1 side by side, both ends of the guiding rod 232 are fixedly connected to the adjacent sides of the two bearing plates 231 respectively, and a plurality of guiding rods 232 are arranged horizontally side by side. The edge of the fixed template 21 is fixedly connected to a plurality of guiding rods 232, the moving mold part 22 is slidably connected to a plurality of guiding rods 232, and the moving mold part 22 can reciprocally slide on a plurality of guiding rods 232.

[0036] In this application document, the number of guide rods 232 is selected as four, and one end of each of the four guide rods 232 is respectively arranged at the four corners of the bearing plate 231. In other embodiments, the number of guide rods 232 can also be selected as two or more other numbers.

[0037] The moving die part 22 includes a first hydraulic push rod 221 and a moving template 222. The first hydraulic push rod 221 is horizontally and fixedly connected to one of the bearing plates 231, and one side of the moving template 222 is fixedly connected to the driving end of the first hydraulic push rod 221. And the four peripheral edges of the moving template 222 are slidably connected to the four guide rods 232, and the moving template 222 can move toward or away from one end of the fixed template 21 under the drive of the first hydraulic push rod 221.

[0038] Refer to Figure 1 and Figure 2 , a first mold cavity 2221 is integrally formed in the middle of the side of the moving template 222 close to the fixed template 21, and a second mold cavity 211 is integrally formed on the side of the fixed template 21 close to the moving template 222. When the moving template 222 and the fixed template 21 are in contact with each other, the first mold cavity 2221 and the second mold cavity 211 will merge to form a complete mold cavity.

[0039] The demolding part 24 is selected as a demolding electric cylinder. The demolding electric cylinder is horizontally installed on the side of the moving template 222 away from the fixed template 21, and the telescopic end of the demolding electric cylinder penetrates through the moving template 222. The end of the telescopic end of the demolding electric cylinder is located in the first mold cavity 2221 and is adapted to the first mold cavity 2221. At the same time, the telescopic ends of multiple demolding electric cylinders are located at different positions in the first mold cavity 2221. After the die-casting part is formed, the telescopic end of the demolding electric cylinder extends out to demold the die-casting part.

[0040] Refer to Figure 1 , the feeding assembly 3 includes an installation base 31, a temporary storage part 32 and a push rod part 33. The installation base 31 is fixedly connected to the four guide rods 232, and the installation base 31 is located on the side of the fixed template 21 away from the moving template 222. The temporary storage part 32 is arranged on the fixed template 21 and is communicated with the mold cavity. The push rod part 33 is slidably penetrated through the temporary storage part 32, and the push rod part 33 can die-cast the high-temperature molten liquid metal in the temporary storage part 32 into the mold cavity.

[0041] The temporary storage part 32 includes a material containing column 321 and a feeding bin 322. The material containing column 321 is horizontally and fixedly connected to the side of the fixed template 21 away from the moving template 222, and the feeding bin 322 is communicated with the top of one end of the material containing column 321 away from the fixed template 21. When the high-temperature molten liquid metal is fed from the feeding bin 322, the high-temperature molten liquid metal can be temporarily stored in the die-casting cavity of the material containing column 321.

[0042] The push rod member 33 includes a head 331 and a second hydraulic push rod 332. The second hydraulic push rod 332 is horizontally and fixedly connected to the mounting base 31, and the length direction of the second hydraulic push rod 332 is parallel to the length direction of the guiding rod 232. The head 331 is coaxially and fixedly connected to the end of the telescopic end of the second hydraulic push rod 332, and the head 331 is coaxially and slidably connected to the inner wall of the material containing column 321. When the second hydraulic push rod 332 drives the head 331 to move in the die casting cavity in the material containing column 321 towards the fixed template 21, the head 331 can die cast the high-temperature molten liquid metal into the mold cavity, thereby completing the die casting.

[0043] Referring Figure 1 and Figure 2 In this application document, the truncation assembly 4 includes two third hydraulic push rods 41 and two square cutters 42. In other embodiments, other third hydraulic push rods 41 and square cutters 42 with the same number can also be selected, and the number is more than two. The third hydraulic push rods 41 are arranged around the fixed template 21 at equal intervals.

[0044] The two third hydraulic push rods 41 are respectively fixedly connected to both ends of the fixed template 21 on the side close to the moving template 222. The two square cutters 42 are respectively fixedly connected to the two telescopic ends of the two third hydraulic push rods 41 in a one-to-one manner, and the two square cutters 42 are respectively slidably connected in the fixed template 21. A cutter cavity 43 is arranged between the second mold cavity 211 and the die casting cavity. Driven by the two third hydraulic push rods 41, the adjacent sides of the two square cutters 42 can abut against each other, and the cutter cavity 43 can be sealed, thereby truncating the sprue. Therefore, the size of the sprue is greatly reduced, and the die casting accuracy of the die casting machine for producing die castings can be improved by reducing the size of the sprue through the square cutters 42.

[0045] At the same time, the side of the square cutter 42 close to the moving template 222 and close to the end can also be set to a mold shape adapted to the die casting at the gate. If the die casting is not an ultra-thin die casting, the die casting can be directly integrally formed without subsequent processing. In this application document, the square cutter 42 is made of superalloy, and the superalloy can adapt to high-temperature operations to ensure that the square cutter 42 will not melt.

[0046] The implementation principle of a casting machine for high-precision magnesium alloy in an embodiment of the present application is as follows: The first hydraulic push rod 221 drives the moving template 222 to move towards the fixed template 21 on the guiding rod 232 until the fixed template 21 and the moving template 222 are completely fitted, and the first mold cavity 2221 and the second mold cavity 211 combine to form a complete mold cavity. Then, the high-temperature molten liquid metal is fed from the feeding bin 322 into the die-casting cavity of the material-containing column 321, and the second hydraulic push rod 332 drives the end 331 to die-cast the high-temperature molten liquid metal into the mold cavity. At the same time, the two hydraulic push rods drive the two square cutting knives 42 to abut in the cutting knife cavity 43, thereby cutting off the gate. A model of the die-casting part at the intersection will be formed on the side close to the moving template 222, enabling the die-casting part to be directly integrally formed without subsequent processing, improving the die-casting accuracy of the casting machine.

[0047] After that, when demolding, the fixed template 21 and the moving template 222 are separated, and the driving end of the demolding electric cylinder extends, thereby demolding the die-casting part from the moving template 222. The two hydraulic push rods are reset, and the second hydraulic push rod 332 continues to move to push the waste out of the fixed template 21 and then moves back to reset.

[0048] The above are all preferred embodiments of the present application. Without limiting the protection scope of the present application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A high-precision magnesium-aluminum alloy casting machine, comprising a support (1), a die assembly (2) and a feeding assembly (3); the die assembly (2) comprises a fixed die plate (21) fixedly arranged on the support (1) and a movable die member (22) slidably arranged on the support (1), the fixed die plate (21) being capable of being abutted by the movable die plate (222); the feeding assembly (3) being arranged in communication with a side of the fixed die plate (21) away from the movable die member (22); the feeding assembly (3) being capable of feeding high-temperature molten liquid metal between the fixed die plate (21) and the movable die member (22) for die casting, characterized in that: It also includes a cutting assembly (4); the cutting assembly (4) includes a plurality of third hydraulic push rods (41) and a plurality of square cutters (42); the third hydraulic push rods (41) are arranged on the fixed mold plate (21), and the square cutters (42) are arranged on the driving end of the third hydraulic push rods (41); A cutter cavity (43) is provided at the connection point between the fixed template (21) and the feeding assembly (3), the square cutter (42) is slidably connected in the cutter cavity (43), and a plurality of the square cutters (42) can seal the cutter cavity (43).

2. The high-precision magnesium-aluminum alloy casting machine according to claim 1, characterized in that: The square cutter (42) is arranged on a side close to the movable die plate (222) to be adapted to the shape of the die at the gate of the die casting.

3. The high-precision magnesium-aluminum alloy casting machine according to claim 2, characterized in that: The square cutter (42) is made of super alloy material.

4. The high-precision magnesium-aluminum alloy casting machine according to claim 3, characterized in that: The mold assembly (2) further comprises a guide member (23), the guide member (23) comprising a plurality of guide rods (232) arranged horizontally and side by side on the bracket (1), the fixed mold plate (21) being fixedly arranged on the plurality of guide rods (232), the movable mold member (22) being slidably arranged on the plurality of guide rods (232), and the fixed mold plate (21) and the movable mold member (22) being arranged on the bracket (1) via the plurality of guide rods (232).

5. The high-precision magnesium-aluminum alloy casting machine according to claim 4, characterized in that: The mold assembly (2) further comprises a plurality of demoulding members (24) for demoulding the die casting, and the plurality of demoulding members (24) are all arranged on the movable mold member (22).

6. The high-precision magnesium-aluminum alloy casting machine according to claim 5, characterized in that: The demoulding member (24) is selected to be a demoulding electric cylinder, which is arranged on a side of the movable mold member (22) away from the fixed mold plate (21), and the telescopic end of the demoulding electric cylinder is inserted into the movable mold member (22), and the end of the telescopic end of the demoulding electric cylinder is adapted to the shape of a mold where the die casting is located.

7. The high-precision magnesium-aluminum alloy casting machine according to claim 4, characterized in that: The loading assembly (3) comprises a temporary storage member (32) connected to the fixed die plate (21) and a push rod member (33) slidably disposed in the temporary storage member (32); the push rod member (33) is capable of die-casting high-temperature molten liquid metal in the temporary storage member (32) between the fixed die plate (21) and the movable die member (22).

8. The high-precision magnesium-aluminum alloy casting machine according to claim 7, characterized in that: The temporary storage member (32) comprises a material containing column (321) connected to the fixed template (21) and a material feeding bin (322) connected to the material containing column (321); the push rod member (33) is slidably disposed in the material containing column (321).

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