CN216397907U - Tectorial membrane core box mould - Google Patents
Tectorial membrane core box mould Download PDFInfo
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- CN216397907U CN216397907U CN202122420166.7U CN202122420166U CN216397907U CN 216397907 U CN216397907 U CN 216397907U CN 202122420166 U CN202122420166 U CN 202122420166U CN 216397907 U CN216397907 U CN 216397907U
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- 210000002489 tectorial membrane Anatomy 0.000 title description 2
- 239000004576 sand Substances 0.000 claims abstract description 60
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241000282537 Mandrillus sphinx Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
A precoated sand core box mold comprises a lower mold, an upper mold, a lower top core plate, an upper top core plate and a sand shooting plate; the lower surface of the upper die forms a horizontal upper parting surface, the upper surface of the lower die forms a horizontal lower parting surface, and the upper parting surface and the lower parting surface enclose a plurality of cavities after being mutually attached; the upper die is provided with a plurality of sand inlet holes; the sand shooting plate is positioned above the upper die and is provided with a plurality of through holes which are in one-to-one correspondence with the sand inlet holes; the upper top core plate is driven by a driving unit to move between a first position located above the upper die and a second position far away from the upper die, and when the upper top core plate is located at the first position and the upper die and the lower die are divided into an upper die and a lower die, the upper top core plate is used for pushing the sand core in the cavity downwards from the upper side of the upper die; and the lower ejection core plate is used for ejecting the sand core in the cavity upwards from the lower part of the lower die when the upper die and the lower die are vertically separated. The sand shooting plate can fill sand grains in a plurality of cavities, and simultaneously solves the problems of difficult cavity filling and poor surface quality of the sand core.
Description
Technical Field
The utility model relates to the technical field of casting, in particular to a precoated sand core box mold.
Background
The traditional precoated sand core box mold is usually in a vertical parting structure, namely a movable mold moves left and right to realize mold closing and mold opening, and when some castings are processed, the sand grains are not easily filled in a cavity during sand shooting, so that the problems of difficult cavity filling and poor sand core surface quality are easily caused; meanwhile, the vertically-divided mold is limited by the structure, the area of the sand shooting plate is small, the distributable area of the cavities in the mold is small, the number of the cavities in the mold is small, and the casting efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a precoated sand core box mold which can solve the problems of difficult cavity filling and poor sand core surface quality and simultaneously improve the casting efficiency.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a precoated sand core box mold comprises a lower mold, an upper mold positioned above the lower mold, a lower top core plate positioned below the lower mold, an upper top core plate positioned above the upper mold and a sand shooting plate;
the lower surface of the upper die forms a horizontal upper parting surface, the upper surface of the lower die forms a horizontal lower parting surface, and the upper parting surface and the lower parting surface enclose a plurality of cavities after being mutually attached; the upper die is provided with a plurality of sand inlet holes which respectively extend downwards from the upper surface to the plurality of cavities;
the sand shooting plate is positioned above the upper die and is provided with a plurality of through holes which are in one-to-one correspondence with the sand inlet holes;
the upper top core plate is driven by a driving unit to move between a first position located above the upper die and a second position far away from the upper die, and when the upper top core plate is located at the first position and the upper die and the lower die are divided into an upper die and a lower die, the upper top core plate is used for pushing the sand core in the cavity downwards from the upper side of the upper die;
and the lower ejection core plate is used for ejecting the sand core in the cavity upwards from the lower part of the lower die when the upper die and the lower die are vertically separated.
The lower surface of the upper top core plate is provided with a plurality of upper top rods which are in one-to-one correspondence with the sand inlet holes, and when the upper top core plate is positioned at the first position and the upper die and the lower die are divided into the upper die and the lower die, the top rods on the upper top core plate penetrate into the sand inlet holes.
The lower core plate is provided with a plurality of lower mandrils which are in one-to-one correspondence with the cavities, the lower mandrils are movably connected in the lower die in a penetrating way from bottom to top, and when the upper die and the lower die are divided into a lower die and a lower mandrill penetrates into the cavities.
The lower top core plate is provided with a guide hole, and the lower die is provided with a guide post which extends downwards and is movably connected in the guide hole in a penetrating way.
The lower die is fixedly provided with a top column, the top column extends upwards and is movably connected in the upper die in a penetrating mode, the lower surface of the upper top core plate extends downwards to form a limiting column, the lower end face of the limiting column is used for being in butt joint with the upper end face of the top column, and when the upper die and the lower die are divided into a die and a die, the limiting column moves downwards along with the top column.
The sand inlet hole is in a cone shape with a small upper diameter and a large lower diameter.
The utility model has the beneficial effects that:
in the utility model, because the upper die and the lower die adopt a horizontal parting mode, sand grains are shunted through a large-area sand shooting plate during sand shooting, and the shunted sand grains respectively enter the cavities corresponding to the through holes one by one through the through holes on the sand shooting plate, so that the sand shooting plate can fill the cavities with a large number of sand grains on one hand, and the problems of difficult shape filling of the cavities and poor surface quality of sand cores on the other hand are solved; in addition, the upper top core plate and the lower top core plate simultaneously perform demoulding action, so that the sand core can be quickly demoulded, and the casting efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a sand shooting status according to the present invention;
FIG. 3 is a schematic view of the mold clamping state of the present invention;
FIG. 4 is a schematic diagram illustrating a mold-open state according to the present invention.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1, the mold for the precoated sand core box of the present invention comprises a lower mold 10, an upper mold 20, a lower top core plate 40, an upper top core plate 60, and a sand shooting plate 50, wherein the upper mold 20 is located above the lower mold 10, a horizontal upper parting surface 201 is formed on the lower surface of the upper mold 20, a horizontal lower parting surface 101 is formed on the upper surface of the lower mold 10, when the upper mold 20 and the lower mold 10 are closed, a plurality of cavities 30 are enclosed between the upper parting surface 201 and the lower parting surface 101, and the plurality of cavities 30 are uniformly distributed on the plane where the upper parting surface 201 and the lower parting surface 101 are located, such that the upper mold 20 and the lower mold 10 can simultaneously make a plurality of sand cores; in addition, a plurality of sand inlet holes 22 are formed in the upper mold 20, the plurality of sand inlet holes 22 extend downward from the upper surface of the upper mold 20 and communicate with the cavities 30 in a one-to-one correspondence manner, the sand shooting plate 50 is located above the upper mold 20, and a plurality of through holes 51 are formed in the sand shooting plate 50 and correspond to the sand inlet holes 22 in a one-to-one correspondence manner. The upper top core plate 60 can be driven by a driving unit to move between a first position located above the upper die 20 and a second position far away from the upper die 20, specifically, the driving unit drives the upper die 20 to move horizontally, in the first position, the upper top core plate 60 is located above the upper die 20, and when the lower die 10 moves downwards relative to the upper die 20 to be separated from the upper die 20 up and down, the upper top core plate 60 can move downwards and push a sand core formed in the cavity 30 downwards from above the upper die 20; the lower top core plate 40 is located below the lower mold 10, and when the lower mold 10 moves downward and the upper mold 20 separates from top to bottom, the lower top core plate 40 pushes up the sand core in the cavity 30 from below the lower mold 10.
The lower surface of the upper top core plate 60 is provided with a plurality of upper ejector rods 61, the plurality of upper ejector rods 61 and the plurality of sand inlet holes 22 are arranged in a one-to-one correspondence manner, when the upper top core plate 60 moves to a first position, the upper ejector rods 61 corresponding to each other are opposite to the sand inlet holes 22 from top to bottom, when the lower die 10 and the upper die 20 are divided from top to bottom, the upper top core plate 60 moves downwards relative to the upper die 20, the plurality of upper ejector rods 61 on the upper top core plate correspondingly penetrate into the plurality of sand inlet holes 22, so that the sand core attached to the upper die 20 can be pushed downwards, and the sand core attached to the upper die 20 is demoulded; the lower top core plate 40 is provided with a plurality of lower top rods 42, the plurality of lower top rods 42 correspond to the cavity 30 one by one, the lower top rods 42 extend upwards from the upper surface of the lower top core plate 40 and movably penetrate through the lower die 10, when the lower die 10 moves downwards, the lower top rods 42 can upwards penetrate into the bottom of the cavity 30 to upwards push the sand core attached to the lower die 10, so that the sand core attached to the lower die 10 is demoulded.
Referring to fig. 2, in the sand injection process, the upper top core plate 60 is moved to the second position by the driving unit to avoid the sand shooting plate 50, the sand shooting plate 50 horizontally covers the upper die 20, the through holes 51 on the sand shooting plate correspond to the sand inlet holes 22 one by one, sand grains enter the cavity 30 through the through holes 51 and the sand inlet holes 22 along with high-pressure air flow, and when the cavity 30 and the sand inlet holes 22 are filled with the sand grains, sand injection is completed; referring to fig. 3, when the sand shooting is completed, the sand shooting plate 50 is removed, and then the upper core plate 60 is placed in the first position, in which the upper mold 20 and the lower mold 10 are in a mold clamping state, and then the lower mold 10 is moved downward to a mold opening state shown in fig. 4, and the upper ejector pins 61 and the lower ejector pins 42 eject the sand cores attached to the upper mold 20 and the lower mold 10, respectively.
In the utility model, because the upper die 20 and the lower die 10 adopt a horizontal parting mode, sand grains are shunted through a large-area sand shooting plate during sand shooting, and the shunted sand grains enter the cavities 30 corresponding to the through holes one by one through the through holes 51 on the sand shooting plate 50, so that the sand shooting plate 50 can fill the cavities with a large number of sand grains on one hand, and the problems of difficult cavity filling and poor surface quality of sand cores on the other hand are solved; in addition, the upper top core plate and the lower top core plate simultaneously perform demoulding action, so that the sand core can be quickly demoulded, and the casting efficiency is improved.
The lower top core plate 40 is provided with a guide hole, the lower die 10 is provided with a guide post 23 extending downwards, the guide post 23 movably penetrates through the guide hole, and the guide post 23 is matched with the guide hole to guide the vertical movement of the lower die 10.
The lower die 10 is further fixedly provided with a top column 21, the top column 21 extends upwards and movably penetrates the upper die 20, in a die closing state, the upper end surface of the top column 21 and the upper surface of the upper die 20 can be arranged to be parallel and level, the lower surface of the upper top core plate 60 is provided with a limiting column 62 in a downward protruding mode, the lower end surface of the limiting column 62 is used for being mutually abutted and matched with the upper end surface of the top column 21, so that the top column and the upper end surface can form a limiting structure, concretely, when the upper die 20 and the lower die 10 are closed, the top column 21 is used for abutting against the limiting column 62 to limit the upper top core plate 60, and when the lower die 10 moves downwards, the limiting column 62 moves downwards along with the top column 21, so that the ejecting action and the die opening action of the upper top core plate 60 are synchronously performed.
In order to facilitate the removal of the core from the upper mold 20, the present invention provides the sand inlet 22 with a tapered shape having a small upper diameter and a large lower diameter.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (6)
1. A precoated sand core box mold is characterized by comprising a lower mold, an upper mold positioned above the lower mold, a lower top core plate positioned below the lower mold, an upper top core plate positioned above the upper mold and a sand shooting plate;
the lower surface of the upper die forms a horizontal upper parting surface, the upper surface of the lower die forms a horizontal lower parting surface, and the upper parting surface and the lower parting surface enclose a plurality of cavities after being mutually attached; the upper die is provided with a plurality of sand inlet holes which respectively extend downwards from the upper surface to the plurality of cavities;
the sand shooting plate is positioned above the upper die and is provided with a plurality of through holes which are in one-to-one correspondence with the sand inlet holes;
the upper top core plate is driven by a driving unit to move between a first position located above the upper die and a second position far away from the upper die, and when the upper top core plate is located at the first position and the upper die and the lower die are divided into an upper die and a lower die, the upper top core plate is used for pushing the sand core in the cavity downwards from the upper side of the upper die;
and the lower ejection core plate is used for ejecting the sand core in the cavity upwards from the lower part of the lower die when the upper die and the lower die are vertically separated.
2. The coated sand core box mold of claim 1, wherein the lower surface of the upper top core plate is provided with a plurality of upper ejector pins in one-to-one correspondence with the sand inlet holes, and the ejector pins of the upper top core plate penetrate into the sand inlet holes when the upper top core plate is in the first position and the upper and lower molds are separated vertically.
3. The mold for a precoated sand core box according to claim 1, wherein the lower top core plate is provided with a plurality of lower top rods in one-to-one correspondence with the cavities, the lower top rods movably penetrate through the lower mold from bottom to top, and the lower top rods penetrate into the cavities when the upper mold and the lower mold are divided vertically.
4. The coated sand core box mold of claim 1, wherein the lower top core plate is provided with guide holes, and the lower mold is provided with downwardly extending guide posts movably penetrating the guide holes.
5. The mold for a precoated sand core box according to claim 1, wherein a top pillar is fixed to the lower mold, the top pillar extends upward and movably penetrates into the upper mold, a limiting pillar extends downward from the lower surface of the upper top core plate, the lower end surface of the limiting pillar is used for being in abutting fit with the upper end surface of the top pillar, and the limiting pillar moves downward along with the top pillar when the upper mold and the lower mold are separated from each other.
6. The coated sand core box mold of claim 1, wherein the sand inlet holes are tapered with a smaller upper diameter and a larger lower diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420166.7U CN216397907U (en) | 2021-09-30 | 2021-09-30 | Tectorial membrane core box mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122420166.7U CN216397907U (en) | 2021-09-30 | 2021-09-30 | Tectorial membrane core box mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216397907U true CN216397907U (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122420166.7U Active CN216397907U (en) | 2021-09-30 | 2021-09-30 | Tectorial membrane core box mould |
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| Country | Link |
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| CN (1) | CN216397907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115007801A (en) * | 2022-06-13 | 2022-09-06 | 宁波亿泰来模具有限公司 | Engine block water jacket sand core forming mold |
-
2021
- 2021-09-30 CN CN202122420166.7U patent/CN216397907U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115007801A (en) * | 2022-06-13 | 2022-09-06 | 宁波亿泰来模具有限公司 | Engine block water jacket sand core forming mold |
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