CN209918821U - Sand casting appearance molding tool - Google Patents
Sand casting appearance molding tool Download PDFInfo
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- CN209918821U CN209918821U CN201920447165.1U CN201920447165U CN209918821U CN 209918821 U CN209918821 U CN 209918821U CN 201920447165 U CN201920447165 U CN 201920447165U CN 209918821 U CN209918821 U CN 209918821U
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Abstract
The utility model relates to a non ferrous metal casting processing field, concretely relates to sand casting foundry goods appearance molding frock. The sand casting appearance modeling tool comprises a casting outer section die, a gap gate outer section die and a sprue outer section die, wherein the gap gate outer section die and the sprue outer section die extend along the up-down direction, the gap gate outer section die is provided with a gate forming surface used for forming a gate, the gate forming surface is provided with a casting matching part in lap joint with the surface of the casting outer section die, the sprue matching part is further provided with a sprue matching part in surface matching with the sprue outer section die, the casting matching part and the sprue matching part are both arc-shaped, and lap joints of the gate forming surface, the surface of the casting outer section die and the surface of the sprue outer section die are in fillet transition. The utility model discloses a sand casting foundry goods appearance molding frock does not add when taking out basically and presss from both sides sand, and the position that corresponds respectively with foundry goods cooperation part and sprue cooperation part on the appearance psammitolite is the fillet, has saved the manual work and has repaired out the process at the fillet on the appearance psammitolite.
Description
Technical Field
The utility model relates to a non ferrous metal casting processing field. In particular to a sand casting shape molding tool.
Background
In the prior art, in order to ensure that a cavity in an external sand core is smoothly filled during pouring of sand casting and prevent 'vortex' from being generated at the initial stage of filling, a gap type pouring system is generally adopted. The split-gate gating system is generally composed of three parts, a casting outer die, a split-gate outer die and a sprue outer die. The gap gate outer section mould is positioned between the casting outer section mould and the sprue outer section mould, and the gap gate outer section mould is respectively in lap joint with the casting outer section mould and the sprue outer section mould. And placing the casting outer section mould, the gap gate outer section mould and the sprue outer section mould, burying sand, and taking out the casting outer section mould, the gap gate outer section mould and the sprue outer section mould after the sand mould is hardened. And pouring an aluminum alloy solution from the sprue of the outer mould sand core, allowing the aluminum alloy solution to flow into the outer mould sand core through the gap gate to take out a cavity left after the outer mould of the casting is taken out, and taking out the casting after the aluminum alloy solution is solidified.
In the gap type pouring system commonly used in the prior art, in the process of taking out a casting outer section die, a gap sprue outer section die and a sprue outer section die from a sand mold, the gap sprue outer section die is provided with a sprue forming surface for forming a sprue, and sand is often clamped at the joint of the sprue forming surface and the surface of the casting outer section die and the joint of the sprue outer section die, so that the structure of the sand core is damaged. In addition, in order to meet the casting requirement, the position of the exterior sand core corresponding to the lap joint needs to be manually rounded after the gap type pouring system is taken out. The shape and the strength of each pouring gate are not uniform and the structure of the sand core is damaged, so that the casting is easily adversely affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sand casting foundry goods appearance molding frock to solve the easy sand inclusion of present slot formula gating system and need the artifical poor problem of foundry goods appearance psammitolite quality that round angle caused of rounding.
For realizing above-mentioned purpose, the utility model discloses a sand casting foundry goods appearance molding frock includes the foundry goods swage mould, gap runner swage mould and sprue swage mould are all along upper and lower direction extension, gap runner swage mould has the runner shaping surface that is used for the shaping runner, the runner shaping surface have with the surperficial lapped foundry goods cooperation part of foundry goods swage mould, still have with sprue swage mould surface complex sprue cooperation part, foundry goods cooperation part and sprue cooperation part all are the arc, make runner shaping surface and foundry goods swage mould surface respectively, the overlap joint on sprue swage mould surface is the fillet transition.
The utility model discloses a beneficial effect of sand casting foundry goods appearance molding frock: because the lap joints of the sprue molding surface, the surface of the outer casting die and the surface of the outer casting die of the sprue are in fillet transition, sand inclusion is basically not added when the appearance molding tool of the sand casting is taken out, and after the appearance molding tool of the sand casting is taken out, the positions, corresponding to the casting matching part and the sprue matching part, on the appearance sand core are fillets, the process of manually trimming the fillets on the appearance sand core is omitted, and the problems that the shapes and the strengths of all runners of the appearance sand core are not uniform and the structure of the appearance sand core is easily damaged due to manual trimming are solved.
Furthermore, in order to prevent the position of the gap gate from deviating due to the poor structural strength of the sand core caused by the relative displacement between the casting outer die and the gap gate outer die in the molding process. And the casting outer die is provided with a casting outer die spigot, and the gap gate outer die is provided with a casting outer die inserting section inserted into the casting outer die spigot.
Further, the sprue outer die and the gap gate outer die are integrally arranged.
Furthermore, in order to prevent the position between the gap gate and the sprue outer die from deviating due to the poor structural strength of the sand core caused by the relative displacement between the sprue outer die and the gap gate outer die in the molding process. The sprue outer section mould is provided with a sprue outer section mould spigot, and the gap gate outer section mould is provided with a sprue outer section mould insertion section inserted into the sprue outer section mould spigot.
Furthermore, a sprue outer section mould spigot is arranged on the sprue outer section mould, the gap gate outer section mould is provided with a sprue outer section mould insertion section which is inserted into the sprue outer section mould spigot, and the casting outer section mould and the gap gate outer section mould are integrally arranged.
Furthermore, the gap gate outer mould comprises a casting part and a pouring part which are arranged in a split mode, the casting part and the casting outer mould are integrally arranged, and the pouring part and the sprue outer mould are integrally arranged.
Furthermore, the surface of the sprue outer die or the casting outer die, which is butted with the gap gate outer die, is a plane.
Drawings
Fig. 1 is a schematic structural view of a sand casting shape molding tool according to a specific embodiment 1 of the present invention;
FIG. 2 is a top view of the sprue outer mold of the sand casting molding tool of the present invention;
FIG. 3 is a front view of FIG. 2;
fig. 4 is a top view of the gap gate outer mold of the sand casting molding tool of the present invention;
FIG. 5 is a front view of FIG. 4;
fig. 6 is a schematic partial structural view of a sand casting shape molding tool according to an embodiment 3 of the present invention;
fig. 7 is a schematic partial structural view of a sand casting shape molding tool according to an embodiment 4 of the present invention;
fig. 8 is a schematic partial structural view of a sand casting shape molding tool according to an embodiment 5 of the present invention;
in the figure: 1. the casting outer die comprises a casting outer die, 2, a gap gate outer die, 3, a sprue outer die, 21, a casting matching part, 22, a sprue matching part, 23, a casting outer die inserting section, 24, a sprue outer die inserting section, 25, a casting part, 26, a pouring part, 4, a casting outer die spigot and 5, a sprue outer die spigot.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a sand casting foundry goods appearance molding frock specific embodiment 1, as shown in fig. 1 to 5, sand casting foundry goods appearance molding frock, including foundry goods swage mould 1, gap runner swage mould 2 and sprue swage mould 3, gap runner swage mould 2 has the runner profiled surface that is used for the shaping runner, the runner profiled surface has the surperficial lapped foundry goods cooperation part 21 with foundry goods swage mould 1, foundry goods cooperation part 21 is the arc, the runner profiled surface still has the surface complex sprue cooperation part 22 with sprue swage mould 3, sprue cooperation part 22 is the arc, foundry goods cooperation part 21 makes the runner profiled surface be the fillet transition with the overlap joint on the surface of foundry goods swage mould 1, sprue cooperation part 22 makes the runner profiled surface be the fillet transition with the overlap joint on the surface of sprue swage mould 3. The lap joints of the gate forming surface, the surface of the casting outer die 1 and the surface of the sprue outer die 3 are in fillet transition, so sand inclusion is basically not added when the sand casting external modeling tool is taken out, and after the sand casting external modeling tool is taken out, the parts of the external sand core, the casting matching part 21 and the sprue matching part 22, which correspond to each other, are fillets, so that the process of manually trimming fillets on the external sand core is omitted, and the problems that the shapes and the strengths of runners of the external sand core are not uniform and the structure of the external sand core is easily damaged due to manual trimming are solved.
The slot gate outer mould 2 is provided with a sprue outer mould insertion section 24 and a casting outer mould insertion section 23. The sprue outer die 3 is provided with a sprue outer die spigot 5 for inserting the sprue outer die insertion section 24, and the casting outer die 1 is provided with a casting outer die spigot 4 for inserting the casting outer die insertion section 23.
When a batch of different castings is cast, if the vertical height h2 of the sprue outer die 3 is higher than that of the casting outer die 1 of the batch of castings, and the diameter D of the sprue outer die 3 meets the casting requirement of the batch of castings, the sprue outer die 3 can be commonly used in the casting process of the batch of castings. When a batch of different castings is cast, if the vertical height h1 of a slot-gate outer mold 2 is higher than the vertical height of the casting outer mold 1 of the batch of castings, and the width d1 of the slot-gate outer mold 2 meets the casting requirement of the batch of castings, the slot-gate outer mold 2 can be commonly used in the casting process of the batch of castings.
The working process of the sand casting exterior modeling tool of the embodiment comprises the following steps: and selecting the sprue outer die 3 with the corresponding diameter D and the vertical height h2 according to the casting requirement corresponding to the casting, and selecting the gap gate outer die 2 which has the width D1 and the vertical height h1 meeting the requirement and is matched with the sprue outer die 3 according to the casting requirement corresponding to the casting. And processing a spigot 4 of the external casting mould which is matched with the insertion section 23 of the external casting mould on the external casting mould 1. And (3) placing the casting outer section mould 1, the gap gate outer section mould 2 and the sprue outer section mould 3 in sequence in a sand box, burying sand, and taking out the casting outer section mould 1, the gap gate outer section mould 2 and the sprue outer section mould 3 in sequence after the sand mould is solidified. And (5) polishing the flash and burr on the exterior sand core. And pouring an aluminum alloy solution from the sprue of the exterior sand core, wherein the aluminum alloy solution flows into the outer pattern sand core through the gap gate and takes out a cavity left after the outer pattern of the casting is taken out. And taking out the casting after the aluminum alloy solution is solidified, and modifying the casting to finish casting.
The sand casting appearance modeling tool in the embodiment 2 is different from the sand casting appearance modeling tool in the embodiment 1 only in that a casting outer section die plane and a sprue outer section die plane are respectively arranged on the casting outer section die and the sprue outer section die plane, a casting outer section die lapping surface matched with the casting outer section die plane and a sprue outer section die lapping surface matched with the sprue outer section die plane are arranged on the gap gate outer section die, and the gap gate outer section die and the casting outer section die and the gap gate outer section die and the sprue outer section die are in lap joint fit.
The mode of lap joint fit is adopted to facilitate the processing of the sprue outer mould and the casting outer mould, but compared with the embodiment 1 of the sand casting external modeling tool, the mode of lap joint fit adopted by the embodiment can enable a sharp corner with a small angle to be formed between the fitting surface of the casting outer mould of the gap sprue outer mould and the lap joint surface of the casting outer mould, the fitting surface of the sprue outer mould and the lap joint surface of the sprue outer mould can also form a sharp corner with a small angle, when the gap sprue outer mould is used, the sharp corner is easy to break and wear, and the service life of the gap sprue outer mould is shortened. In addition, in the process of sand filling, relative displacement is easily generated between the gap gate outer die and the casting outer die and between the gap gate outer die and the sprue outer die, so that the quality of the casting is influenced.
As shown in fig. 6, the embodiment 3 of the sand casting molding apparatus is different from the embodiment 1 of the sand casting molding apparatus only in that the slot gate outer mold 2 and the sprue outer mold 3 are integrally provided in this embodiment.
Embodiment 4 of the sand casting molding apparatus, as shown in fig. 7, the present embodiment is different from embodiment 1 of the sand casting molding apparatus only in that in the present embodiment, the slot gate outer mold 2 and the casting outer mold 1 are integrally provided.
As shown in fig. 8, the sand casting molding apparatus of embodiment 5 differs from the sand casting molding apparatus of embodiment 1 only in that the gap gate outer mold includes a casting portion 25 and a runner portion 26 which are separately provided, the casting portion 25 is provided integrally with the casting outer mold 1, and the runner portion 26 is provided integrally with the sprue outer mold 3.
Claims (7)
1. Sand casting foundry goods appearance molding frock, including foundry goods swage mould, gap runner swage mould and sprue swage mould all extend along upper and lower direction, gap runner swage mould has the runner molding surface that is used for the shaping runner, the runner molding surface have with the surperficial lapped foundry goods cooperation part of foundry goods swage mould, still have with sprue swage mould surface complex sprue cooperation part, a serial communication port, foundry goods cooperation part and sprue cooperation part all are the arc, make runner molding surface and foundry goods swage mould surface, the overlap joint on sprue swage mould surface is the fillet transition respectively.
2. A sand casting shape modeling tool according to claim 1, wherein a casting outer die spigot is provided on the casting outer die, and the slot gate outer die has a casting outer die insertion section that is inserted into the casting outer die spigot.
3. A sand casting molding apparatus as claimed in claim 2, wherein the sprue cavity and the slot gate cavity are integrally formed.
4. A sand casting molding tooling according to claim 2, wherein the sprue outer die is provided with a sprue outer die spigot, and the gap gate outer die has a sprue outer die insertion section which is inserted into the sprue outer die spigot.
5. A sand casting molding tool according to claim 1, wherein the sprue outer die is provided with a sprue outer die spigot, the gap gate outer die is provided with a sprue outer die insertion section which is inserted into the sprue outer die spigot, and the casting outer die and the gap gate outer die are integrally provided.
6. A sand casting molding apparatus according to claim 1, wherein the gap gate outer mold includes a casting portion and a runner portion that are separately provided, the casting portion being integrally provided with the casting outer mold, the runner portion being integrally provided with the sprue outer mold.
7. A sand casting contouring tool of claim 1 wherein the face of said sprue outer mold or said casting outer mold that interfaces with said gap gate outer mold is planar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447165.1U CN209918821U (en) | 2019-04-03 | 2019-04-03 | Sand casting appearance molding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920447165.1U CN209918821U (en) | 2019-04-03 | 2019-04-03 | Sand casting appearance molding tool |
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| Publication Number | Publication Date |
|---|---|
| CN209918821U true CN209918821U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920447165.1U Active CN209918821U (en) | 2019-04-03 | 2019-04-03 | Sand casting appearance molding tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848370A (en) * | 2019-04-03 | 2019-06-07 | 洛阳乾中新材料科技有限公司 | A kind of sand casting casting external form moulding tooling |
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2019
- 2019-04-03 CN CN201920447165.1U patent/CN209918821U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848370A (en) * | 2019-04-03 | 2019-06-07 | 洛阳乾中新材料科技有限公司 | A kind of sand casting casting external form moulding tooling |
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