CN105436434A - Bottom leakage device for vacuum lost foam sand box - Google Patents
Bottom leakage device for vacuum lost foam sand box Download PDFInfo
- Publication number
- CN105436434A CN105436434A CN201511010230.7A CN201511010230A CN105436434A CN 105436434 A CN105436434 A CN 105436434A CN 201511010230 A CN201511010230 A CN 201511010230A CN 105436434 A CN105436434 A CN 105436434A
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- CN
- China
- Prior art keywords
- funnel
- evaporative pattern
- sealing block
- sandbox
- rotating shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/01—Flasks; Accessories therefor for vacuum-sealed moulding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
The invention discloses a bottom leakage device for a vacuum lost foam sand box. The bottom leakage device for the vacuum lost foam sand box is applied to the field of lost foam casting. The bottom leakage device is mounted at the bottom part of the lost foam sand box and comprises the lost foam sand box, a funnel, a sealing block, a steel plate and a rotating shaft, wherein a bottom plate of the lost foam sand box comprises an upper bottom plate and a lower bottom plate; the upper bottom plate is fixedly connected to the upper edge of the funnel, and the lower bottom plate is fixedly connected to the lower edge of the funnel; the lower edge of the funnel is in face sealing with the outer surface of the sealing block; the sealing block is fixedly connected to the steel plate; the steel plate and the rotating shaft are fixedly connected through two supporting plates; the rotating shaft is positioned through a bracket which is fixedly arranged on the lower bottom plate of the lost foam sand box; the rotating shaft can rotate to drive the sealing block on the steel plate to open or close the funnel through the supporting plate. The bottom leakage device is simple in structure, and convenient to operate; the potential risk of overturning the box can be avoided; the investment on box overturning devices can be saved; the energy power can be saved; the bottom leakage device can be widely popularized in the industrial production.
Description
Technical field
The invention belongs to lost foam casting field, relate to leakage device at the bottom of a kind of molding sand of alternative evaporative pattern turnover machine.
Background technology
Lost foam casting is also called founding casing with vacuum, is a kind of casting method that cavityless casting is combined with the moulding of V method.Evaporative pattern sandbox many employings mould turnover method or repaking mechanism, rout up the molding sand in sandbox and foundry goods from sandbox.Mould turnover needs turnover machine or relevant hoisting mechanism, there is equipment investment and maintenance issues, also there is certain security risk and equipment fault.
For reducing power consumption and security risk, patent No. CN201310725652.7 name is called, and " a kind of negative pressure evanescent mold sand box being provided with wicket " has invented a kind of sandbox of lateral opening, molding sand can be flowed out by two wickets from the side, it has two problems, one is after sandbox repeatedly uses, and because the reasons such as distortion and molding sand wearing and tearing cause opening sealing bad, cannot ensure the vacuum in sandbox, because gas leakage causes crush time serious, foundry goods cannot be shaping; Two is that this opening is suitable only for the less sandbox of size, is unsuitable for the knockout of larger-size sandbox.
Summary of the invention
The technical issues that need to address of the present invention there is provided leakage device at the bottom of a kind of evaporative pattern sandbox, at the bottom of this evaporative pattern sandbox, leakage device structure is simple, cost of manufacture is low, easy to operate, avoid investment and the maintenance of repaking mechanism, when ensureing sandbox vacuum, molding sand is wherein flowed out smoothly, reduces Relict Sand amount.
For solving above technical problem, the technical solution adopted in the present invention is:
The present invention includes evaporative pattern sandbox, funnel, sealing block, steel plate and rotating shaft, the base plate of described evaporative pattern sandbox comprises upper plate and lower shoe, described upper plate is fixedly connected with the upper edge of funnel, described lower shoe is fixedly connected with the lower edge of funnel, the lower edge of described funnel becomes face to seal with the outer surface of sealing block, described sealing block is by being connected with Interal fixation, described steel plate is fixedly connected with by two gripper shoes with rotating shaft, described rotating shaft is located by the support be fixedly installed on evaporative pattern sandbox lower shoe, rotating shaft is rotated through gripper shoe and drives opening or closed funnel of the sealing block on steel plate.
Improvement of the present invention is that described sealing block is that flexible elastomeric material is made, and shape is Rotary-table, and the lower edge of funnel is the conical surface, and the Rotary-table curved surface of described sealing block contacts with the conical surface seal on edge under funnel.
Further improvement of the present invention is that the upper edge of described funnel is not higher than the upper plate of evaporative pattern sandbox, and lower edge is equal with the lower shoe of evaporative pattern sandbox or stretch out lower shoe, is provided with pneumatics airduct along knockout place down.
Further improvement of the present invention is that described rotating shaft is rotated in the hole of support, and its anglec of rotation is not less than 120 °.
Further improvement of the present invention is that described rotating shaft is stretched out outside evaporative pattern sandbox, described in stretch out evaporative pattern sandbox wall outer surface be provided with extension spring.
The lower shoe be further bottom described evaporative pattern sandbox of the present invention is fixed with I-steel.
Further improvement of the present invention is that described sealing block is fixedly connected with by bolt, nut with steel plate.
Owing to have employed above technical scheme, the beneficial effect that the present invention obtains is:
1) do not adopt turnover machine or repaking mechanism, economize energy power, save mould turnover equipment investment;
2) structure is simple, there is not mould turnover maintenance of equipment, saves turnover machine maintenance cost;
3) the present invention is simple to operate, has stopped potential safety hazard during mould turnover operation;
4) sealing surface of funnel and rubber sealing block avoids molding sand and washes away, and can ensure the sealing effectiveness of Long-Time Service, ensure that the vacuum of sandbox;
5) this sand leakage device is adopted, for arranging in sandbox during intricate casting moulding that vacuumizing flexible pipe provides conveniently.Vacuumize flexible pipe because do not damage when leaking sand operation, and during mould turnover operation, molding sand or foundry goods often destroy the vacuum hose in sandbox, once, vacuumize flexible pipe needs replacing or maintenance once to mould turnover.
6) this sand leakage device is applied widely, both can be applied to single case molding flask, also can be applied to production line sandbox.
The upper plate of funnel of the present invention and sandbox and lower shoe seal, and seal between the lower edge of funnel and sealing block, ensure that the vacuum in evaporative pattern sandbox, improve the quality of foundry goods, stop the generation of crush accident.Rotating shaft drives sealing block to rotate, and realizes the folding of molding sand funnel, reaches the object of leaking sand and sealing.
The rotating shaft anglec of rotation is not less than 120 °, molding sand damage to sealing block sealing surface when knockout can be avoided, under described funnel, be provided with pneumatics airduct along sand-falling port place, the dust on convenient cleaning sealing block, to extend the service life of sealing block, ensure the sealing of funnel and sealing block.Sealing block adopts elastomeric material to make, and have certain elasticity, its sealing effectiveness is better.
Conveniently sandbox adds sand jolt ramming on plain bumper, has I-steel at the lower shoe bottom welding of sandbox, and the rotation for bottom sand leakage device sealing block provides sufficient space.
For ease of operation, the rotating shaft bottom sandbox is stretched out outside sandbox.In off position, due to the deadweight of gripper shoe, steel plate and sealing block, automatically can open, so stretch out bottom sandbox in rotating shaft, corresponding side plate design locking mechanism, as modes such as ratchet, spring, bolt, wedges, ensure that sealing block contacts excellent sealing with edge under funnel in use.
For the larger-size sandbox of box space, can increase end leakage device quantity, end leakage device is symmetrically distributed, and one can leak sand fast, and two can reduce remaining sand amount.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of the present invention;
Fig. 2 is the right TV structure schematic diagram of folding condition of the present invention;
Fig. 3 is steel plate of the present invention, gripper shoe, rotating shaft annexation structural representation.
Wherein, 1-sandbox, 2-support, 3-rotating shaft, 4-I-steel, 5-sealing block, 6-bolt, 7-nut, 8-funnel, 9-upper plate, 10-lower shoe, 11-steel plate, 12-gripper shoe, 13-pneumatics airduct.
Detailed description of the invention
Leakage device at the bottom of a kind of evaporative pattern sandbox, structure is as Fig. 1, 2, shown in 3, it comprises evaporative pattern sandbox 1, funnel 8, sealing block 5, steel plate 11 and rotating shaft 3, the base plate of described evaporative pattern sandbox 1 comprises upper plate 9 and lower shoe 10, described upper plate 9 is fixedly connected with the upper edge of funnel 8, described lower shoe 10 is fixedly connected with the lower edge of funnel 8, the lower edge of described funnel 8 becomes face to seal with the outer surface of sealing block 5, described sealing block 5 is by being fixedly connected with steel plate 11, described steel plate 11 is fixedly connected with by two gripper shoes 12 with rotating shaft 3, described rotating shaft 3 is located by the support 2 be fixedly installed on evaporative pattern sandbox 1 lower shoe 10, rotating shaft 3 is rotated through gripper shoe 12 and drives opening of the sealing block 5 on steel plate 11 or closed funnel 8.
Described sealing block 5 is made for flexible elastomeric material, and shape is Rotary-table, and the lower edge of funnel 8 is the conical surface, and the conical surface seal on Rotary-table curved surface and funnel 8 times edges of described sealing block 5 contacts.
The upper edge of described funnel 8 is not higher than the upper plate 9 of evaporative pattern sandbox 1, and lower edge is equal with the lower shoe 10 of evaporative pattern sandbox 1 or stretch out lower shoe 10, is provided with pneumatics airduct 13 along knockout place down.
Described rotating shaft 3 is rotated in the hole of support 2, and its anglec of rotation is not less than 120 °.
Described rotating shaft 3 is stretched out outside evaporative pattern sandbox 1, described in stretch out evaporative pattern sandbox 1 wall outer surface be provided with extension spring.
Lower shoe 10 bottom described evaporative pattern sandbox 1 is fixed with I-steel 4.
Described sealing block 5 is fixedly connected with by bolt 6, nut 7 with steel plate 11.
Evaporative pattern sandbox 1 is bottom pumping formula sandbox, and Fig. 1 is seen in this leakage device installation site, end.The spacing of evaporative pattern sandbox 1 upper plate 9 and lower shoe 10 is 140mm, lower shoe 10 be of a size of 1.2 meters square, upper plate 9 is designed to be about 1:10 gradient to base plate center.Funnel 8 adopts circle, on along external diameter 250mm, bell mouth internal diameter 90mm, lower to external diameter 200mm, 120 °, epicone face cone angle, lower conical surface cone angle 90 °, hopper level 150mm.At center intersection gas cutting Ф 250mm circular hole of upper plate 9, the circular hole of a lower shoe 10 center gas cutting Ф 200mm, by funnel 8 and upper plate 9 and lower shoe 10 sealing.For ensure weldability, funnel 8 adopts mild steel manufacture, funnel 8 in a pre-installation, by upper and lower cone face process.Should notice that the upper edge of funnel 8 must not exceed upper plate 9 when funnel 8 is installed, lower to extended lower shoe 10.
Two gripper shoes 12 and the circular steel plate 11 of center with bolt hole are symmetrically welded, then weld with rotating shaft 3, concrete connected mode is shown in Fig. 3.Then with bolt 6 nut 7, steel plate 11 is fixedly connected with sealing block 5, sees Fig. 2.Rotating shaft 3 two ends are inserted in from the hole of support 2, are located by the conical surface of sealing block 5 with the lower of funnel 8 along coordinating, and support 2 are adjusted to rotating shaft 3 stepped locations location, with lower shoe 10 spot welding.Due to the plane that lower shoe 10 is not processing, when support 2 is highly inappropriate time, sealing block 5 and the contact excellent sealing on funnel 8 times edges can be ensured by the mode of adjusting pole 3 height or sealing block 5 height, then support 2 is welded on lower shoe 10.
Sandbox bottom welding two width are the I-steel 4 of 200mm, I-steel length 1300mm, spacing 900-1000mm, ensure to rotate to sealing block 5 to reserve enough spaces.
Along sand-falling port place, pneumatics airduct 13 is installed 8 times at funnel, during use, when turning conjunction sealing block 5, the conical surface of sealing block 5 is purged.After sealing block 5 coordinates with funnel 8, the rotating shaft 3 of stretching out sandbox side adopts extension spring to fix.When leaking sand, remove extension spring, rotating shaft 3 leaks sand, avoids Lou sand to impact sealing block 5.
In use procedure, after casting pouring completes cooling, remove extension spring, open end leakage device, rotating shaft 3 leaks sand, and molding sand directly falls into low hole, is risen in sand storehouse, enter sand process line, recycle by bucket.Foundry goods hangs out from sandbox, and circulation is to polishing operation.
In a word, structure of the present invention is simple, and cost of manufacture is low, and be easy to operation, the scope of application is wide.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (7)
1. leakage device at the bottom of an evaporative pattern sandbox, it is characterized in that: comprise evaporative pattern sandbox (1), funnel (8), sealing block (5), steel plate (11) and rotating shaft (3), the base plate of described evaporative pattern sandbox (1) comprises upper plate (9) and lower shoe (10), described upper plate (9) is fixedly connected with the upper edge of funnel (8), described lower shoe (10) is fixedly connected with the lower edge of funnel (8), the lower edge of described funnel (8) becomes face to seal with the outer surface of sealing block (5), described sealing block (5) is fixedly connected with steel plate (11), described steel plate (11) is fixedly connected with by two gripper shoes (12) with rotating shaft (3), described rotating shaft (3) is located by the support (2) be fixedly installed on evaporative pattern sandbox (1) lower shoe (10), rotating shaft (3) is rotated through gripper shoe (12) and drives the sealing block (5) on steel plate (11) to open or closed funnel (8).
2. leakage device at the bottom of a kind of evaporative pattern sandbox according to claim 1, it is characterized in that: described sealing block (5) is made for flexible elastomeric material, shape is Rotary-table, the lower edge of funnel (8) is the conical surface, and the Rotary-table curved surface of described sealing block (5) contacts with the conical surface seal on edge under funnel (8).
3. leakage device at the bottom of a kind of evaporative pattern sandbox according to claim 2, it is characterized in that: the upper edge of described funnel (8) is not higher than the upper plate (9) of evaporative pattern sandbox (1), lower edge is equal with the lower shoe (10) of evaporative pattern sandbox (1) or stretch out lower shoe (10), is provided with pneumatics airduct (13) along knockout place down.
4. leakage device at the bottom of a kind of evaporative pattern sandbox according to claim 1, is characterized in that: described rotating shaft (3) is rotated in the hole of support (2), and its anglec of rotation is not less than 120 °.
5. leakage device at the bottom of a kind of evaporative pattern sandbox according to claim 4, is characterized in that: described rotating shaft (3) stretches out evaporative pattern sandbox (1) outward, described in stretch out evaporative pattern sandbox (1) wall outer surface be provided with extension spring.
6. according to leakage device at the bottom of the arbitrary described evaporative pattern sandbox of claim 1-5, it is characterized in that: the lower shoe (10) of described evaporative pattern sandbox (1) bottom is fixed with I-steel (4).
7. a kind of evaporative pattern sandbox floor drain apparatus according to claim 1, is characterized in that: described sealing block (5) is fixedly connected with by bolt (6), nut (7) with steel plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010230.7A CN105436434A (en) | 2015-12-30 | 2015-12-30 | Bottom leakage device for vacuum lost foam sand box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010230.7A CN105436434A (en) | 2015-12-30 | 2015-12-30 | Bottom leakage device for vacuum lost foam sand box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105436434A true CN105436434A (en) | 2016-03-30 |
Family
ID=55547317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511010230.7A Pending CN105436434A (en) | 2015-12-30 | 2015-12-30 | Bottom leakage device for vacuum lost foam sand box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105436434A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108971440A (en) * | 2018-08-20 | 2018-12-11 | 黟县新达机械铸造有限公司 | A kind of lost foam casting sandbox |
| CN113714471A (en) * | 2021-11-02 | 2021-11-30 | 常州市富顺机械有限公司 | Conveying device for lost foam casting |
| CN117022923A (en) * | 2023-10-10 | 2023-11-10 | 青岛凯捷重工机械有限公司 | Self-discharging sand silo for lost foam molding processing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100977A (en) * | 1993-09-30 | 1995-04-05 | 上海卡拿翰五金电器有限公司 | Casting technology for polyphenylacetylene foaming-type vanishing die and sand box thereof |
| JPH08318347A (en) * | 1995-05-26 | 1996-12-03 | Sintokogio Ltd | Metallic frame for vacuum filling and seamed process |
| CN102049465A (en) * | 2010-12-31 | 2011-05-11 | 溧阳市科华机械制造有限公司 | Sand mixer sand unloading door with auto-lock function |
| CN201832958U (en) * | 2010-09-29 | 2011-05-18 | 凌高忠 | Self-discharging sand box |
| CN202684054U (en) * | 2012-07-19 | 2013-01-23 | 天津市龙鑫汇汽车零部件制造有限公司 | Sand discharging device at bottom of sand box |
| CN205236977U (en) * | 2015-12-30 | 2016-05-18 | 邯郸慧桥复合材料科技有限公司 | Vacuum disappearance sand bottom of case neglected loading is put |
-
2015
- 2015-12-30 CN CN201511010230.7A patent/CN105436434A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1100977A (en) * | 1993-09-30 | 1995-04-05 | 上海卡拿翰五金电器有限公司 | Casting technology for polyphenylacetylene foaming-type vanishing die and sand box thereof |
| JPH08318347A (en) * | 1995-05-26 | 1996-12-03 | Sintokogio Ltd | Metallic frame for vacuum filling and seamed process |
| CN201832958U (en) * | 2010-09-29 | 2011-05-18 | 凌高忠 | Self-discharging sand box |
| CN102049465A (en) * | 2010-12-31 | 2011-05-11 | 溧阳市科华机械制造有限公司 | Sand mixer sand unloading door with auto-lock function |
| CN202684054U (en) * | 2012-07-19 | 2013-01-23 | 天津市龙鑫汇汽车零部件制造有限公司 | Sand discharging device at bottom of sand box |
| CN205236977U (en) * | 2015-12-30 | 2016-05-18 | 邯郸慧桥复合材料科技有限公司 | Vacuum disappearance sand bottom of case neglected loading is put |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108971440A (en) * | 2018-08-20 | 2018-12-11 | 黟县新达机械铸造有限公司 | A kind of lost foam casting sandbox |
| CN113714471A (en) * | 2021-11-02 | 2021-11-30 | 常州市富顺机械有限公司 | Conveying device for lost foam casting |
| CN113714471B (en) * | 2021-11-02 | 2022-02-15 | 常州市富顺机械有限公司 | Lost foam casting device |
| CN117022923A (en) * | 2023-10-10 | 2023-11-10 | 青岛凯捷重工机械有限公司 | Self-discharging sand silo for lost foam molding processing |
| CN117022923B (en) * | 2023-10-10 | 2024-01-16 | 青岛凯捷重工机械有限公司 | Self-discharging sand silo for lost foam molding processing |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160330 |