CN210908009U - Sand box for lost foam casting - Google Patents
Sand box for lost foam casting Download PDFInfo
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- CN210908009U CN210908009U CN201921647636.XU CN201921647636U CN210908009U CN 210908009 U CN210908009 U CN 210908009U CN 201921647636 U CN201921647636 U CN 201921647636U CN 210908009 U CN210908009 U CN 210908009U
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- sand
- box
- lost foam
- working chamber
- foam casting
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Abstract
The utility model provides a sand box is used in lost foam casting belongs to lost foam casting device technical field for the problem of collapsing that takes place when solving and reducing lost foam casting improves production efficiency, reduces the emergence of incident. The utility model discloses a box, box both sides limit all is equipped with the lug, is equipped with the working chamber in the box, and working chamber inboard and bottom all are provided with a plurality of ventilative boards, and the half slot has still been seted up to the working chamber bottom, and the chamber of bleeding has all been seted up to the bottom all around of box, and the chamber of bleeding communicates with each other with ventilative board, is provided with cooling device in the chamber of bleeding, and the working chamber bottom is provided with sand outlet mechanism, and box one side bottom is provided with the exhaust tube, and the sand outlet has been seted up to the box opposite side, and the sand outlet outside is. The utility model discloses working chamber atmospheric pressure remains stable, and the difficult emergence problem of collapsing improves the foundry goods quality, and the side goes out sand, and protection staff safety, the cooling effect is obvious, improves work efficiency's advantage.
Description
Technical Field
The utility model belongs to the technical field of lost foam casting equipment, a lost foam casting device is related to, especially a sand box is used in lost foam casting.
Background
The lost foam casting is also called solid mold casting, is a novel casting mode following ground modeling, has the characteristics of accurate size and shape of a casting, good repeatability, precision casting and the like, needs a sand box in lost foam casting, and puts a white mold into molding sand for compaction casting.
Through retrieval, as chinese patent document discloses a lost foam casting flask, [ application number: CN 201810949199.0; publication No.: CN108971440A, use pull rod pulling baffle to close the knockout hole, put lost foam white mould into the die cavity, add the molding sand, add the while and go to the compaction, cover the shield, put into the runner in the runner hole, the sealed box, start the external evacuation machine of exhaust tube, make the sand box in keep the negative pressure state, after the casting is accomplished, a period of standing, it is water to lead to at first oral siphon, second oral siphon, the sand box cools off the back, use pull rod pulling baffle to open the knockout hole, the molding sand falls the back to the greatest extent, hoist the foundry goods.
Although the negative pressure state in the sand box is kept when can pouring to the sand box disclosed in this patent, the air cavity position and the quantity that set up, can not reach the negative pressure requirement under the great condition of sand box certainly, can cause the phenomenon of collapsing, influence foundry goods quality, and this sand box cooling device only distributes around the box outside airtight chamber, and the cooling effect is not very good.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided a sand box for lost foam casting, the technical problem that the device will solve is: the problem of crush occurring in lost foam casting is reduced, the production efficiency is improved, and the incidence rate of safety accidents is reduced.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a sand box for lost foam casting, comprises a box body, box both sides limit all is equipped with the lug, is equipped with the working chamber in the box, and working chamber inboard and bottom all are provided with a plurality of permeability plates, and the half slot has been seted up to the working chamber bottom, and the chamber of bleeding has all been seted up all around the box and bottom, and the chamber of bleeding communicates with each other with the permeability plate, is provided with cooling device in the chamber of bleeding, and working chamber bottom is provided with out sand mechanism, and box one side bottom is provided with the exhaust tube, and the sand outlet has been seted up to the box opposite side, and the.
The utility model discloses a theory of operation is: when the sand box is used, the sand box is fixed on a vibrating table, a sand outlet is sealed, a lost foam is placed in a working cavity, sand grains are added while vibrating, so that the lost foam is in full contact with the sand grains, the vibration is completed, a vacuumizing machine works, air in an air exhaust cavity is exhausted through an exhaust pipe, then liquid metal is cast in the lost foam, the lost foam is gasified by heating, the vacuumizing machine exhausts the gasified lost foam from the working cavity, the air pressure in the working cavity is kept stable, cold water is continuously injected into a condensing device after the casting is completed, the sand grains are added and a casting is cooled, the working efficiency is improved, after the casting is completed, a sand outlet baffle is moved away, a sand outlet mechanism works to exhaust the sand grains, the sand is discharged without turning over, the sand outlet efficiency is higher, potential safety hazards are reduced, and the casting is taken out after the sand grains are exhausted.
The breathable plate comprises a front filter screen, a rear filter screen and a sponge layer, the front filter screen is fixedly connected with the inner side wall of the working cavity, the rear filter screen is fixedly connected with the inner side wall of the air exhaust cavity, and the sponge layer is further arranged between the front filter screen and the rear filter screen.
Structure more than adopting guarantees through filter screen and sponge layer that the ventilative board guarantees under ventilative condition can not leak sand, prevents to be adsorbed in the vacuum machine during operation at the vacuum machine, causes the vacuum machine trouble.
The sand outlet mechanism comprises a motor, a shaft, a shaftless rotating body and a sealing ring, the motor is fixed outside the box body, one end of the shaft is fixedly connected with the output end of the motor, the other end of the shaft is fixedly connected with one end of a shaftless spiral body, the shaftless spiral body is positioned in a semicircular groove formed in the bottom of the working cavity, the other end of the shaftless spiral body is positioned at a sand outlet, and the sealing ring is fixed on the shaft at the joint of the motor and the box body.
Structure more than adopting, it is rotatory to discharge sand grain from the working chamber through the rotation of motor work drive shaftless spirochaeta, need not the tilting and goes out the sand, goes out sand efficiency and is higher, does not use the tilting and goes out the sand, has reduced the potential safety hazard, prevents through the sealing washer and leaks sand.
The cooling device comprises a bottom condensation pipe, a side condensation pipe, a water outlet and a water filling port, wherein the bottom condensation pipe and the side condensation pipe are both located in an air exhaust cavity, the bottom condensation pipe is located at the lower end of a working cavity, the side condensation pipe is located around the working cavity, the water outlet is connected with one end of the side condensation pipe, the water outlet is located at the top end of the side condensation pipe, the water filling port is connected with one end of the bottom condensation pipe, and the other end of the side condensation pipe is communicated with the other end of the bottom condensation pipe.
Structure more than adopting, cold water gets into cooling device from the water filling port, and earlier through the bottom condenser pipe in the side condenser pipe that passes through, cold water absorbs the heat and becomes hot water, then flows out from the delivery port, takes away the heat and accelerates the cooling rate of foundry goods and sand grain, reduces casting production time, improves production efficiency.
Bottom condenser pipe and side condenser pipe all adopt side's pipe, bottom condenser pipe one side and the contact of working chamber bottom, side condenser pipe one side and the contact of working chamber lateral wall.
By adopting the structure, the contact area between the square tube and the outer side wall of the working cavity is large, and the cooling effect is better.
The sand outlet baffle comprises a guide rail sliding groove, a baffle and a handle, the guide rail sliding groove is fixedly connected to the upper end and the lower end of the sand outlet, the baffle is slidably mounted in the guide rail sliding groove, and the handle is fixedly connected to one end of the baffle.
By adopting the structure, when the sand box works, sand is prevented from flowing out of the sand outlet, and the occurrence of the phenomenon of box collapse during casting of the sand box is reduced.
One end of the exhaust pipe is connected with the exhaust cavity, and the other end of the exhaust pipe is connected with a vacuumizing machine.
When the sand box is vibrated and cast, the vacuum-pumping machine works, so that the air pressure in the working cavity and the air-pumping cavity is continuously kept stable.
Compared with the prior art, the utility model discloses the name has following advantage:
1. all be provided with a plurality of ventilative boards through working chamber inboard and bottom, the exhaust chamber atmospheric pressure is stable during the evacuation, and the difficult emergence problem of collapsing is favorable to reducing the casting accident, improves the foundry goods quality.
2. Realize the side through the sand discharging device and go out the sand, need not the tilting flask and go out the sand, it is higher to go out sand efficiency, does not use the tilting flask to go out the sand, has reduced the potential safety hazard.
3. The cooling device can accelerate the cooling speed of the casting and the sand grains, reduce the casting production time and improve the production efficiency.
4. The filter screen guarantees that the air-permeable plate can not leak sand under the air-permeable condition through the arrangement of the front and the rear filter screens.
Drawings
Fig. 1 is a schematic view of a top view mechanism of the present invention.
Fig. 2 is a schematic sectional view at a-a in fig. 1.
Fig. 3 is a schematic structural diagram at B in fig. 2.
Fig. 4 is the structural schematic diagram of the sand discharging mechanism in the utility model.
Fig. 5 is a schematic view of the mechanism of the condensing unit of the present invention.
Fig. 6 is a schematic diagram of a sand outlet structure in the present invention.
In the figure: 1-box body, 101-working chamber, 102-air suction chamber, 103-lifting lug, 2-air permeable plate, 201-front filter screen, 202-sponge layer, 203-rear filter screen, 3-sand outlet mechanism, 301-motor, 302-shaft, 303-sealing ring, 304-shaftless spiral body, 4-cooling device, 401-bottom condenser pipe, 402-side condenser pipe, 403-water outlet, 404-water inlet, 5-sand outlet baffle, 501-baffle, 502-handle, 503-guide rail chute, 6-air suction pipe and 7-sand outlet.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-6, the embodiment provides a sand box for lost foam casting, which comprises a box body 1, wherein lifting lugs 103 are respectively arranged on two side edges of the box body 1, the sand box is convenient to lift and move, a working chamber 101 is arranged in the box body 1, symmetrical inclined plates are arranged at the bottom of the working chamber 101, the inclined plates are used for guiding sand grains, a semicircular groove is further formed in the bottom of the working chamber 101 and used for placing a shaftless spiral body 304, a plurality of air-permeable plates 2 are respectively arranged on the inner side and the bottom of the working chamber 101 and used for ventilating and preventing sand leakage, air-extracting chambers 102 are respectively formed around and at the bottom of the box body 1, the air-extracting chambers 102 are communicated with the air-permeable plates 2, the air pressure in the air-extracting chambers 102 is kept stable during vacuum-extracting, a cooling device 4 is arranged in the air-extracting chambers 102 and used for accelerating cooling castings and improving the efficiency, a sand outlet 7 is formed in the other side of the box body 1, and a sand outlet baffle 5 is arranged on the outer side of the sand outlet 7, so that sand is prevented from flowing out of the sand outlet 7, and the occurrence of a crush accident is reduced.
Go out sand mechanism 3 and include motor 301, axle 302, shaftless rotator 304 and sealing washer 303, motor 301 is fixed outside box 1, axle 302 one end is connected through the key-type connection with motor 301 output, the axle 302 other end passes through welded connection with shaftless spirochaeta 304 one end, motor 301 work drives the rotatory sand production of shaftless spirochaeta 304 through axle 302, shaftless spirochaeta 304 is located the half slot that the working chamber 101 bottom was seted up, shaftless spirochaeta 304 conveniently places, the shaftless spirochaeta 304 other end is located sand outlet 7 department, sealing washer 303 is fixed on the axle 302 of motor 301 and box 1 junction, prevent that the box from leaking sand.
The cooling device 4 comprises a bottom condensation pipe 401, a side condensation pipe 402, a water outlet 404 and a water filling port 403, wherein the bottom condensation pipe 401 and the side condensation pipe 402 are both positioned in the air pumping cavity 102, the bottom condensation pipe 401 is positioned at the lower end of the working cavity 101, the side condensation pipe 402 is positioned around the working cavity 101, the water outlet 404 is connected with one end of the side condensation pipe 402, the water outlet 404 is positioned at the uppermost end of the side condensation pipe 402, the water filling port 403 is connected with one end of the bottom condensation pipe 401, the bottom condensation pipe 401 and the side condensation pipe 402 are both square pipes, the condensation pipes are square pipes, the contact area of the square pipes and the working cavity 101 is larger, the cooling effect is better, one side of the bottom condensation pipe 401 is in contact with the bottom of the working cavity 101, one side of the side condensation pipe 402 is in contact with the outer side wall of the working cavity 101, the other end of the side condensation pipe, after the bottom condensation pipe 401 is filled with cold water, the cold water flows into the side condensation pipe 402 to take away heat in the sand box, and then flows out of the water outlet 404, so that the cooling speed of the casting is increased, and the production efficiency is improved.
The sand outlet baffle 5 comprises a guide rail sliding groove 503, a baffle 501 and a handle 502, the guide rail sliding groove 503 is fixedly connected to the upper end and the lower end of the sand outlet 7, the baffle 501 is slidably mounted in the guide rail sliding groove 503, the baffle 501 can move in the guide rail sliding groove 503 to limit the left position and the right position of the baffle 501, the handle 502 is fixedly connected to one end of the baffle 501, when the sand outlet 7 needs to be sealed, the handle 502 is pushed, the handle 502 drives the baffle 501 to move towards the direction of the sand outlet 7 until the sand outlet 7 is completely sealed, and when sand is discharged, the handle 502 is pushed to move the baffle 501 away from the sand outlet 7.
One end of the air exhaust pipe 6 is connected with the air exhaust cavity 102, the other end of the air exhaust pipe 6 is connected with a vacuum extractor, and when the sand box vibrates and casts, the vacuum extractor works to continuously keep stable air pressure in the working cavity 101 and the air exhaust cavity 102.
The utility model discloses a theory of operation:
when the sand box for casting by using the lost foam is used, firstly, the lifting lug 103 is hung by a lifting rope to move the box body 1 to a vibration table, the box body 1 is fixed on the vibration table, the handle 502 is pushed, the handle 502 drives the baffle plate 501 to move towards the direction of the sand outlet 7 until the sand outlet 7 is completely sealed, the lost foam is placed into the working chamber 101, the lost foam is vibrated while being added with sand, so that the lost foam is fully contacted with the sand, the quality of casting work is ensured, after the vibration is finished, the vacuum extractor works, air in the air extraction chamber 102 and the working chamber 101 is extracted through the air extraction pipe 6, so that the air pressure in the working chamber 101 and the air extraction chamber 102 is continuously kept stable, liquid metal is cast into the lost foam, the lost foam is heated and gasified, the gasified lost foam enters the air extraction chamber 102 through the ventilating plate 2, the air in the air extraction chamber 102 is extracted by the vacuum extractor, after the casting is finished, cold water, the cold water firstly passes through the bottom condensation pipe 401, after the bottom condensation pipe 401 is filled with the cold water, the cold water flows into the side condensation pipe 402, the cold water absorbs heat and becomes hot water, the heat of the sand box is taken away, the hot water flows out from the water outlet 403, and the cooling speed of the casting is accelerated.
After casting is finished, the handle 502 is pushed to remove the baffle 501 from the sand outlet 7, then the motor 301 is started, the motor 301 drives the shaftless screw body 304 to move through the shaft 302, sand is discharged from the working chamber 101, and after the sand is discharged, the casting is taken out.
To sum up, the utility model discloses:
all be provided with a plurality of ventilative boards through working chamber inboard and bottom, the exhaust chamber is stable with working chamber atmospheric pressure during the evacuation, and the difficult emergence is collapsed the case problem, is favorable to reducing the casting accident, improves the foundry goods quality.
Realize the side through the sand discharging device and go out the sand, need not the tilting flask and go out the sand, it is higher to go out sand efficiency, does not use the tilting flask to go out the sand, has reduced the potential safety hazard.
The cooling device can accelerate the cooling speed of the casting and the sand grains, reduce the casting production time and improve the production efficiency.
Guarantee through setting up preceding filter screen and back filter screen that ventilative board can not leak sand under ventilative condition.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides a sand box for lost foam casting, includes box (1), a serial communication port, box (1) both sides limit all is equipped with lug (103), be equipped with working chamber (101) in box (1), working chamber (101) inboard and bottom all are provided with a plurality of breather plate (2), the half slot has still been seted up to working chamber (101) bottom, air suction chamber (102) have all been seted up all around and to the bottom of box (1), and air suction chamber (102) communicate with each other with breather plate (2), be provided with cooling device (4) in air suction chamber (102), working chamber (101) bottom is provided with sand outlet mechanism (3), box (1) one side bottom is provided with exhaust tube (6), sand outlet (7) have been seted up to box (1) opposite side, sand outlet (7) outside is provided with sand baffle (5).
2. The sand box for the lost foam casting according to claim 1, wherein the air-permeable plate (2) comprises a front filter screen (201), a rear filter screen (203) and a sponge layer (202), the front filter screen (201) is fixedly connected with the inner side wall of the working cavity (101), the rear filter screen (203) is fixedly connected with the inner side wall of the air suction cavity (102), and the sponge layer (202) is arranged between the front filter screen (201) and the rear filter screen (203).
3. The sand box for the lost foam casting according to claim 1, wherein the sand discharging mechanism (3) comprises a motor (301), a shaft (302), a shaftless spiral body (304) and a sealing ring (303), the motor (301) is fixed outside the box body (1), one end of the shaft (302) is fixedly connected with the output end of the motor (301), the other end of the shaft (302) is fixedly connected with one end of the shaftless spiral body (304), the shaftless spiral body (304) is positioned in a semicircular groove formed in the working cavity (101), the other end of the shaftless spiral body (304) is positioned at the sand outlet (7), and the sealing ring (303) is fixed on the shaft (302) at the connection position of the motor (301) and the box body (1).
4. The sand box for the lost foam casting according to claim 1, wherein the cooling device (4) comprises a bottom condenser pipe (401), a side condenser pipe (402), a water outlet (404) and a water inlet (403), the bottom condenser pipe (401) and the side condenser pipe (402) are both positioned in the air pumping cavity (102), the bottom condenser pipe (401) is positioned at the lower end of the working cavity (101), the side condenser pipe (402) is positioned around the working cavity (101), the water outlet (404) is connected with one end of the side condenser pipe (402), the water outlet (404) is positioned at the uppermost end of the side condenser pipe (402), the water inlet (403) is connected with one end of the bottom condenser pipe (401), and the other end of the side condenser pipe (402) is communicated with the other end of the bottom condenser pipe (401).
5. A sand box for lost foam casting according to claim 4, wherein the bottom condenser tube (401) and the side condenser tube (402) are square tubes, and one side of the bottom condenser tube (401) is in contact with the bottom of the working chamber (101) and one side of the side condenser tube (402) is in contact with the outer side wall of the working chamber (101).
6. The sand box for lost foam casting according to claim 1, wherein the sand-discharging baffle plate (5) comprises a guide rail sliding groove (503), a baffle plate (501) and a handle (502), the guide rail sliding groove (503) is fixedly connected to the upper end and the lower end of the sand-discharging opening (7), the baffle plate (501) is slidably arranged in the guide rail sliding groove (503), and the handle (502) is fixedly connected to one end of the baffle plate (501).
7. The sand box for lost foam casting according to claim 1, wherein one end of the air suction pipe (6) is connected to the air suction chamber (102), and the other end of the air suction pipe (6) is connected to a vacuum extractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647636.XU CN210908009U (en) | 2019-09-30 | 2019-09-30 | Sand box for lost foam casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647636.XU CN210908009U (en) | 2019-09-30 | 2019-09-30 | Sand box for lost foam casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210908009U true CN210908009U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921647636.XU Expired - Fee Related CN210908009U (en) | 2019-09-30 | 2019-09-30 | Sand box for lost foam casting |
Country Status (1)
| Country | Link |
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| CN (1) | CN210908009U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756549A (en) * | 2020-12-26 | 2021-05-07 | 台州市椒江永固船舶螺旋桨厂 | Propeller casting equipment |
| CN113458345A (en) * | 2021-07-15 | 2021-10-01 | 内蒙古金域凤形矿业耐磨材料有限公司 | Sand box for lost foam casting process |
| CN114346174A (en) * | 2022-02-22 | 2022-04-15 | 安徽依格尔精密铸造有限公司 | Stainless steel precision casting rapid mold making system |
| CN115815538A (en) * | 2023-02-03 | 2023-03-21 | 垣曲县晋锋机械铸造有限公司 | Sand discharging mechanism at bottom of lost foam casting sand box |
-
2019
- 2019-09-30 CN CN201921647636.XU patent/CN210908009U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756549A (en) * | 2020-12-26 | 2021-05-07 | 台州市椒江永固船舶螺旋桨厂 | Propeller casting equipment |
| CN113458345A (en) * | 2021-07-15 | 2021-10-01 | 内蒙古金域凤形矿业耐磨材料有限公司 | Sand box for lost foam casting process |
| CN114346174A (en) * | 2022-02-22 | 2022-04-15 | 安徽依格尔精密铸造有限公司 | Stainless steel precision casting rapid mold making system |
| CN115815538A (en) * | 2023-02-03 | 2023-03-21 | 垣曲县晋锋机械铸造有限公司 | Sand discharging mechanism at bottom of lost foam casting sand box |
| CN115815538B (en) * | 2023-02-03 | 2023-04-25 | 垣曲县晋锋机械铸造有限公司 | Sand unloading mechanism for bottom of lost foam casting sand box |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210225 Address after: 237014 Xincheng 2nd Road, economic and Technological Development Zone, Lu'an City, Anhui Province Patentee after: Anhui Lanxiang Textile Machinery Technology Co.,Ltd. Address before: 237000 Road 2, Xincheng, Lu'an economic and Technological Development Zone, Anhui Province Patentee before: Anhui Lanxiang Heavy Industry Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 Termination date: 20210930 |