GB2057319A - Moulding machine - Google Patents
Moulding machine Download PDFInfo
- Publication number
- GB2057319A GB2057319A GB8019599A GB8019599A GB2057319A GB 2057319 A GB2057319 A GB 2057319A GB 8019599 A GB8019599 A GB 8019599A GB 8019599 A GB8019599 A GB 8019599A GB 2057319 A GB2057319 A GB 2057319A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molding
- sand
- flask
- molding sand
- drag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/28—Compacting by different means acting simultaneously or successively, e.g. preliminary blowing and finally pressing
Abstract
Molding sand in the cope 17 and drag 8 mold flasks is squeezed by squeeze plates 24, 5 after compaction of the molding sand by compressed air blown into the cope and drag molding flasks via vents 23,7. Interrupting means are provided for preventing the compressed air and the molding sand from flowing back to the sand reservoir 27 during the supply of compressed air into respective molding flasks. The interrupting means may include a slide plate 35 slidably disposed between a first molding sand discharging port 31 of the sand reservoir and a molding sand charging port 21 of the cope molding flask and between a second molding sand discharging port 30 of the sand reservoir and the molding sand charging port 11 of the drag molding flask, respectively. The sliding plates have communication bores for selectively providing communications between associated sand discharging and charging ports. Rotary valves are alternatively used as the interrupting means. Sand is blown from the reservoir by compressed air supplied via a valve 39. <IMAGE>
Description
SPECIFICATION
Moulding machine
The present invention relates to a molding machine wherein molding sands blown into a cope and drag molding flasks are compacted by squeeze plates after applying compressed air into the molding sands.
This type of a molding machine is disclosed in
Japanese Patent Laid-Open Publication No. 39319/79 of the same applicant. According to this technic, when the molding sand on a pattern surface is compacted by compressed air passed through the molding sand in the molding flask, the molding sand in the molding flask is liable to flow back into a sand reservoir together with the compressed air, which causes the molding to be impossible. It is, therefore, necessary to maintain a higher pressure in the sand reservoir than the pressure of the air flowing through the molding sand. Namely, the pressure in the sand reservoir is reduced to 0.2 to 1.9 atm after blowing and, in order to prevent the reverse flow of the compressed air applied through the molding sand at a pressure of 5 to 6 atm, the pressure in the sand reservoir has to be increased to a level greater than 5 to 6 atm.In consequence, the consumption of compressed air is increased and a considerably long time is required for increasing the pressure level in the sand reservoir. This is quite disadvantageous froWn the view points of save of resources and productivity.
By the present invention it is possible to provide an improved molding machine thereby to overcome the above described problems of the prior art.
To this end, according to the invention, there is provided a molding machine comprising: a molding flask provided in its side wall with at least one molding sand charging port; a squeeze plate having a plurality of vent holes for jetting compressed air into the molding flask and capable of being fit into said molding flask; a pattern plate having a plurality of air relief ports for relieving air from said molding flask and adapted to set to the molding flask so as to oppose to the squeeze plate across the molding flask; a sand reservoir device having a molding sand discharge port communicatable with the molding sand charging port of the molding flask; and interrupting means adapted to interrupt the communication between the molding sand discharge port of the sand reservoir device and the molding sand charging port of the molding flask when the compressed air is jetted into the molding flask through the vent holes.
The above and other advantageous features will become more clear from the following description of the preferred embodiments taken in conjunction with the accompanying drawings.
Figure lisa vertical sectional view of a molding machine constructed in accordance with an embodiment of the invention;
Figure 2 is an enlarged view of a portion marked at A in Figure 1; and
Figure 3 is a vertical sectional view of a molding machine constructed in accordance with another embodiment of the invention.
Referring first to Figures 1 and 2 showing a first embodiment of the invention, a gate-type frame 1 is constituted by a pair of columns 2 standing upright from a base (not shown) and an upper frame 3 inter-connecting the upper ends of the columns 2. A lower squeeze plate 5 disposed at the lower side of the frame 1 is connected to a piston rod 4 which in turn is slidably received by a squeeze cylinder (not shown). The lower squeeze plate 5 is movable up and down as the piston rod 4 is extended and retracted. A plurality of vent holes 7 formed in the upper surface of the lower squeeze plate 5 provides a communication between the atmosphere and an air chamber 6 which communicates at its one end with a compressed air source.A drag molding flask 8 is positioned above the lower squeeze plate 5 taking the lowermost position and has a size large enough to permit the lower squeeze plate 5 to pass therethrough. The outer wall of the drag molding flask 8 is fixed to the piston rods of lift cylinders which are not shown. The drag molding flask 8 therefore is movable vertically between the position above the squeeze plate Staking the lowermost position and an upper superposed position. The drag molding flask 8 has a hollow chamber 9 defined by its inner and outer walls. The inner wall is provided with a multiplicity of vent holes 10 and is provided with a relief valve (not shown) communicatable with the atmosphere. Also, a molding sand charging port 11 communicating with the outside is formed in a predetermined portion of the inner wall of the drag molding flask 8.Above the drag molding flask 8 a match plate 13 in the form of a hollow box is piaced on flanged rollers 14 for movement in the horizontal direction between a molding position and a retracted waiting position. Relief ports 15 of a small diameter are formed in the upper and lower surfaces of the match plate (or pattern plate) 13. Patterns 16 are placed on the upper and lower surfaces substantially in the mid portion of the match plate 13. A relief port (not shown) communicating with a hollow chamber 12 of the match plate 13 is formed in the side wall of the latter. Also, a cope molding flask 17 is disposed above the match plate 13 so as to oppose to the drag molding flask 8, and is fixed to a supporting member 18 fitted onto the columns 2. The cope molding flask 17 has a hollow chamber 19 defined between the inner and outer walls thereof.A plurality of vent holes 20 are formed in the inner wall to communicate with the hollow chamber 19. The hollow chamber 19 is communicated through a relief valve (not shown) with the atmosphere. Also, a molding sand charging port 21 is formed in a predetermined portion of the inner wall of the cope molding flask 17. An upper squeeze plate 24 disposed above the cope molding flask 17 has a chamber 22 connected at its one side to the source of compressed air and provided in its lower side with a multiplicity of small vent holes through which the chamber 22 is communicated with atmosphere. The cope compression plate 24 is so sized as to be able to move into the cope molding flask 17.
The upper squeeze plate 24 is connected to one end of the piston rod 26 of a squeeze cylinder 25 which is extended downwardly from the upper frame 3.
A reference numeral 27 denotes a sand reservoir which is positioned at a level above the lower squeeze plate 5 taking the lowermost position. The sand reservoir is provided in its upper part with a molding sand receiving port 29 having a gate valve 28 operated by a cylinder (not shown) and at its lower part with molding sand discharging ports 30, 31 communicatablewith the aforementioned molding sand charging ports 11,21. Asiiding member 33 having an annular groove embedding an expandable seal 32 is attached to the end of each of the discharging ports 30,31 and the charging ports 11, 21. The expandable seal 32 is adapted to expand and shrink in accordance with the supply and discharge of compressed air.The arrangement is such that the expandable seal 32 is expanded outwardly, as the compressed air is supplied to the back side of the expandable seal 32, to make a close contact with the side surface of a slide plate 35 which will be mentioned later. Also, as the compressed air is relieved, the expandable seal 32 is contracted inwardly from the sliding surface of the sliding member 33 to permit the slide plate 35 to slide without any wear of the expandable seal 32.
The slide plate 35 is attached to the end of the piston rod 37 of a cylinder 36 which is fixed to the upper frame 3 to extend downwardly therefrom. The slide plate 35 has a thinned lower end so that it may be slidingly inserted into the gap between the sliding members 33, 33. Also, communication ports 38 are formed in vertically spaced portions of the slide plate 35 for communication with the molding sand charging ports 11, 21 and the molding sand discharging ports 30,31. The slide plate 35 is movable in the vertical direction by the operation of the cylinder 36.
Namely, in the state that the drag molding flask 8 and the match plate 13 are raised to be superposed with the cope molding flask 17, the molding sand charging ports 11,21 are communicated with the molding sand discharging ports 30,31 through the communication ports 38 if the slide plate 35 has been lowered to the lowermost position. However, if the slide plate 35 has been raised, the communications between the molding sand charging ports 11, 21 and the molding sand discharging ports 30,31 are interrupted.
A reference numeral 39 denotes an inlet valve which is communicated at its one end with the compressed air source and connected at its other end to the side wall of the sand reservoir. A relief valve 40 is connected to the opposite side to the inlet valve 39. The molding sand is designated at a reference numeral 41.
It is possible to arrange such that a partition plate is extended in the horizontal direction within the chamber 12 so asto prevent the mutual interference of flows of air coming from upper and lower sides.
The molding machine of this embodiment having the described construction operates in a manner described hereinunder.
At first, the slide plate 35 takes the lowered position, while the drag molding flask 8 and the lower squeeze plate 5 take the starting positions as shown in Figure 1. As the aforementioned lift cylinders (not shown) are actuated, the drag molding flask 8 comes to contact with the lower side of the match plate 13 which is beforehand transferred at the molding position. Then, as the lift cylinders are further actuated, the superposed drag molding flask 8 and the match plate 13 are lifted unitarily to come into contact with the cope molding flask 17. In this state, the molding sand charging ports 11, 21 are communicated with the molding sand discharging ports 30,31 of the sand reservoir 27 through the communication ports 38,38.In this state, the piston rod 4 of the lower squeeze cylinder is actuated to raise the lower squeeze plate 5 to the lower end portion of the drag molding flask 8 to close the lower end opening of the latter. At the same time, the upper end opening of the cope molding flask 17 is closed by the upper squeeze plate 24 which is moved down to the closing position by means of the upper squeeze cylinder 25. Then, the expandable seal 32 is expanded by the compressed air supplied through the air passage 34 to make close contact with the side surface of the slide plate 35. In consequence, the molding sand charging ports 11,21 are sealingly communicated with the molding sand discharging ports 30,31 through the communication port 38.
Thereafter, the gate valve 28 and the relief valve 40 are closed and, at the same time, the relief valves (not shown) communicating with the hollow chambers 9, 19 of the molding flasks 8, 17 are opened to permit these hollow chambers to communicate with the atmosphere. Further, the inlet valve 39 communicatng with the compressed air source is opened so that the molding sand 41 is charged into the respective molding flasks 8, 17 through the discharging ports 30,31, communication ports 38,38 and the charging ports 11,21.
The compressed air blown into the molding flasks 8, 17 together with the molding sand 41 is relieved through the vent holes 10,20 formed in the inner walls of the respective molding flasks 8, 17 and then through the relief valves (not shown) communicated with the atmosphere and also via the relief port after passing the discharge port 16 of the match plate 13.
After the molding sand having been charged in the cope and drag molding flasks in the described manner, the inlet valve 39 and the relief valves (not shown) communicating with the hollow chambers 9, 19 are closed, while the relief valve 40 is opened to relieve the compressed air remaining in the sand reservoir 27.
Thereafter, the compressed air in the air passage 34 is relieved to permit the expandable seal to contract, and the cylinder 36 is actuated to raise the slide plate 35 thereby to interrupt the communica- tions between the molding sand charging ports 11, 21 and the molding sand discharging ports 30, 31.
Subsequently, the compressed air is supplied again into the air passage 34 to expand each of the expandable seals 32 into close contact with the surface of the slide plate 35 thereby to disconnect the molding sand charging ports 11,21 and the molding sand discharging ports 30,31 from the atmosphere. Then, the compressed air is introduced into the air chambers 6, 22 of the squeeze plates 5,24 and is then allowed to flow into respective molding flasks 8, 17 through the vent holes 7,23 to compact the molding sand around the match plate 13. On the other hand, the compressed air supplied into the molding flasks 8, 17 flows through the molding sand and come into the match plate 13 via the relief port 15 and finally discharged to the outside through the relief ports (not shown) formed in the side wall of the match plate 13.In this state, the compressed air charged into the molding flasks 8, 17 does never flow back into the sand reservoir 27 because the molding sand charging ports 11,21 of the molding flasks are closed in a sealing manner by means of the slide plate 35 and the expandable seal 32. Thus, the compressed air is forcibly made to flow through the molding sand in the molding flasks 8, 17 to compact the molding sand around the match plate 13 and the pattern 16. The supply of compressed air is stopped after this compacting operation is over.
Then, the compressed air acting on the expandable seal 32 is relieved and the cylinder 36 is actuated to lower the slide plate 35 to permit the molding sand charging ports 11,21 to communicate with the discharging ports 30, 31. Subsequently, the squeeze cylinder (not shown) for the lower squeeze plate 5 and the squeeze cylinder 25 for the upper squeeze plate 24 are actuated simultaneously to squeeze the molding sand in the molding flasks 8, 17 by means of the squeeze plates 5, 24to compact the molding sand in the vicinity of the latter. In consequence, a mold having a uniform hardness is formed.
Then, the squeeze cylinders (the squeeze cylinder for lower squeeze plate is not shown) are operated to retract their piston rods to move the squeeze plates 5, 24 away from the surface of the mold thus formed, and the lift cylinders (not shown) are operated to retract their piston rods thereby to lowerthe drag molding flask 8, together with the match plate 13. As the drag molding flask and, hence, the match plate 13 carried by the latter is lowered to a predetermined level, the match plate 13 comes to rest on the flanged rollers 14 and the drag molding flask 8 solely is lowered to the lowermost position. On the other hand, the match plate 13 is moved from the molding position to the retracted waiting position, by suitable driving means (not shown).Then, the lift cylinders are actuated again to lift the drag mold flask 8 carrying the drag mold to set the drag mold to the cope mold held by the cope molding flask 17.
Subsequently, the lower squeeze cylinder which is not shown is actuated to raise the lower squeeze plate to bring the same into close contact with the lower surface of the drag mold in the drag molding flask 8. Also, the upper squeeze cylinder 25 is actuated to lower the upper squeeze plate 24 to push out the cope and drag molds in the molding flasks 8, 17. Then, the lower squeeze cylinder (not shown) is operated to retract its piston rod so that the lower squeeze plate 5 carrying the closed cope and drag molds is lowered to the lowermost position in its stroke. Aftertaking out the mold in the described manner, a push out cylinder (not shown) is energized to push the complete mold from the lower squeeze plate 5 laterally to a conveyor, thus one cycle of operation of the molding is completed.
The supply of the molding sand 41 into the sand reservoir 27 is made through the sand receiving port 29 by opening the gate valve 28 after closing the inlet valve 39 to stop the supply of compressed air.
The separation of the complete mold from the pattern is facilitated by supplying the compressed air to the surface of the match plate 13 through the relief ports 15 formed in the match plate 13. In the described embodiment, the arrangement is such that the drag molding flask 8 and the match plate 13 are brought together into contact with the lower side of the cope molding flask 17 which is held stationary.
This arrangement, however, is not exclusive and the arrangement may be such that the cope molding flask and the drag molding flask are moved downwardly and upwardly, respectively, into contact with the match plate 13 which is held stationary.
It is also possible to use a valve devices 132, 134 incorporating rotary valves as shown in Figure 3, in place of the slide plate 35 for opening and closing the molding sand discharge ports 30,31 of the sand reservoir 27.
It will be understod from the foregoing description that, according to the invention, it is not necessary to increase the pressure in the sand reservoir to prevent the compressed air and sand from flowing back into the sand reservoir during the compaction of the molding sand around the pattern surface by means of compressed air.
Thus, the present invention greatly contributes to the saving of energy, as well as to the improvement of productivity.
Claims (10)
1. Amolding machine comprising:
a molding flask provided in its side wall with at least one molding sand charging port;
a squeeze plate having a plurality of vent holes for jetting compressed air into said molding flask and capable of being moved into said molding flask;
a pattern plate having a plurality of relief ports and adapted to be set on said molding flask so as to oppose to said squeeze plate across said molding flask;
a sand reservoir device provided with a molding sand discharging port communicatable with said molding sand charging port of said molding flask; and
interrupting means adapted to interrupt the communication between said molding sand discharging port and said molding sand charging port when said compressed air is jetted into said molding flask through said vent holes.
2. A molding machine as claimed in claim 1, wherein said interrupting means include a slide plate slidably disposed between said molding sand discharging port of said sand reservoir device and said molding sand charging port of said molding flask, said slide plate having a communication port for communicating said discharging port and said charging port with each other.
3. A molding machine as claimed in claim 1, wherein said interrupting means includes a rotary valve attached to the end of said molding sand discharging port of said sand reservoir device and communicatable with said molding sand charging port of said molding flask.
4. A molding machine as claimed in claim 2, said interrupting means comprising:
a first sliding member attached to the end of said molding sand discharging port of said sand reservoir device;
a second sliding member attached to said molding sand charging port of said molding flask;
an expandable annular sealing member provided on said first sliding member and facing said slide plate;
an expandable annular sealing member provided on said second sliding member and facing said slide plate; and
air passages in said first and second sliding members and adapted for cooperating with respective sealing members such that, when said sealing members are supplied with compressed air through said air passages, said sealing members are expanded to make close contact with said slide plate, while, when the compressed air is relieved from said sealing members, said sealing members are contracted to become out of close contact with said slide plate.
5. A molding machine comprising:
a drag molding flask provided in its side wall with at least one molding sand charging port;
a lower squeeze plate having a plurality of vent holes for jetting compressed air into said drag molding flask and adapted to be moved into said drag molding flask;
a cope molding flask provided in its side wall with at least one molding sand charging port;
an upper squeeze plate provided with a plurality of vent holes for jetting compressed air into said cope molding flask and adapted to be moved into said cope molding flask;
a match plate provided in its upper and lower surfaces with a plurality of relief ports for relieving compressed air from said cope and drag molding flasks through a chamber defined therein;;
a lifting device adapted to lift said drag molding flask or to lift and lower said drag and cope molding flasks, respectively, to superpose said cope and drag molding flasks with said match plate placed therebetween;
sand reservoir means having a first and a second molding sand discharging ports communicatable with said molding sand charging ports of the superposed cope and drag mold flasks; and
interrupting means adapted to interrupt the com
munication between said first molding sand discharging port and said molding sand charging port
of said cope molding flask and the communication
between said second molding sand discharging port and said molding sand charging port of said drag mold flask, when compressed air is jetted from said vent holes of said upper and lower squeeze plates into said cope and drag molding flasks.
6. A molding machine as claimed in claim 5, wherein said interrupting means includes a first slide
plate slidably disposed between said first molding sand discharging port and said molding sand charging port of said cope molding flask and having a first communication port for permitting said first molding sand discharging port and said molding sand charging portto communicate with each other; and a second slide plate slidably disposed between said second molding sand discharging port and said molding sand charging port of said drag molding flask and having a second communication portfor permitting said second molding sand discharging port and said molding sand charging port to communicate with each other.
7. A molding machine as claimed in claim 6, wherein said first and second slide plates are constructed integrally with each other.
8. A molding machine as claimed in claim 5, wherein said interrupting means include rotary type valves attached to the ends of the first and second molding sand discharging ports of said sand reservoir device and communicatable with said molding sand charging ports of said cope and drag molding flasks, respectively.
9. A molding machine as claimed in claims 5 to 8, wherein said chamber in said match plate is provided with a horizontal partition plate for preventing the mutual interference between the flows of air relieved from said relief ports in the upper and lower surfaces of said match plate
10. A molding machine as claimed in any one of claim 5 to 9, wherein said match plate is movable between a molding position and a waiting position in the horizontal direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11614579U JPS6034442Y2 (en) | 1979-08-22 | 1979-08-22 | mold making machine |
| JP13991879U JPS6034443Y2 (en) | 1979-10-09 | 1979-10-09 | mold making machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2057319A true GB2057319A (en) | 1981-04-01 |
| GB2057319B GB2057319B (en) | 1983-05-25 |
Family
ID=26454517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8019599A Expired GB2057319B (en) | 1979-08-22 | 1980-06-16 | Moulding machine |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH647700A5 (en) |
| DE (1) | DE3021644A1 (en) |
| FR (1) | FR2463652A1 (en) |
| GB (1) | GB2057319B (en) |
| IN (1) | IN152826B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125449A (en) * | 1991-01-02 | 1992-06-30 | Taiyo Chuki Co., Ltd. | Improved molding machine |
| ES2114416A1 (en) * | 1994-10-28 | 1998-05-16 | Erana Agustin Arana | Process using reduced blowing pressure and device for blowing complex cores |
| EP1905523A4 (en) * | 2005-06-07 | 2008-08-20 | Sintokogio Ltd | Flask unit, cope and drag molding device, and molding line |
| CN101862815A (en) * | 2010-03-11 | 2010-10-20 | 新东工业株式会社 | Die molding machine |
| CN104128571A (en) * | 2014-07-08 | 2014-11-05 | 山西方盛液压机电设备有限公司 | Horizontal sand-ejecting and parting clay-bonded sand automatic moulding machine |
| CN104399905A (en) * | 2014-12-19 | 2015-03-11 | 济南万兴农用机械科技有限公司 | Pre-coated sand shooting type core shooter |
| CN109604535A (en) * | 2019-01-10 | 2019-04-12 | 盐城市大丰澳滨铸造有限公司 | A kind of sand core machine and its operating method |
| CN110090930A (en) * | 2019-06-05 | 2019-08-06 | 含山县富瑞机械厂 | A kind of core shooter sand hopper that flow velocity can be improved |
| CN115026246A (en) * | 2022-06-16 | 2022-09-09 | 苏州三信机器制造有限公司 | High-precision cold core machine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK155483A (en) * | 1983-04-07 | 1984-10-08 | Dansk Ind Syndikat | MACHINE FOR MANUFACTURING CASHLESS, HANDLED SHARED SUBSTANCES OF SAND OR SIMILAR MATERIAL |
| DE3507179C1 (en) * | 1985-03-01 | 1985-10-31 | Eugen Dipl.-Ing. 8877 Burtenbach Bühler | Method and device for producing boxless molds |
| DE4033887C2 (en) * | 1990-10-25 | 1994-07-28 | Hottinger Adolf Masch | Device and method for producing molded parts for foundry purposes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1351184A (en) * | 1962-03-23 | 1964-01-31 | Machine for obtaining foundry molds and cores as well as other parts of shape determined by molding mass, by use of compressed air, in particular machine for obtaining molds and cores by spraying sand | |
| IT1008749B (en) * | 1973-01-29 | 1976-11-30 | Buehler Eugen | PROCEDURE AND DEVICE FOR THE PREPARATION OF SHAPES IN EARTH SAND |
| IT985038B (en) * | 1973-05-09 | 1974-11-30 | Mec Fond Spa | MOLDING HEAD FOR STIRRUPS OR CORES FROM FOUNDRY TO RIBBED EARTH SHOOTED OR BLOWERED AND RELATIVE METHOD |
| DE7602966U1 (en) * | 1976-02-03 | 1976-06-24 | Badische Maschinenfabrik Gmbh, 7500 Karlsruhe | FOUNDRY MOLDING MACHINE FOR BOX MOLDS |
-
1980
- 1980-06-09 DE DE19803021644 patent/DE3021644A1/en not_active Ceased
- 1980-06-11 CH CH448380A patent/CH647700A5/en not_active IP Right Cessation
- 1980-06-11 FR FR8012978A patent/FR2463652A1/en active Granted
- 1980-06-16 GB GB8019599A patent/GB2057319B/en not_active Expired
- 1980-12-09 IN IN1361/CAL/80A patent/IN152826B/en unknown
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5125449A (en) * | 1991-01-02 | 1992-06-30 | Taiyo Chuki Co., Ltd. | Improved molding machine |
| EP0493977A2 (en) * | 1991-01-02 | 1992-07-08 | Taiyo Chuki Co., Ltd. | Molding machine |
| EP0493977A3 (en) * | 1991-01-02 | 1993-05-26 | Taiyo Chuki Co., Ltd. | Molding machine |
| ES2114416A1 (en) * | 1994-10-28 | 1998-05-16 | Erana Agustin Arana | Process using reduced blowing pressure and device for blowing complex cores |
| EP1905523A4 (en) * | 2005-06-07 | 2008-08-20 | Sintokogio Ltd | Flask unit, cope and drag molding device, and molding line |
| US8701744B2 (en) | 2010-03-11 | 2014-04-22 | Sintokogio, Ltd. | Molding machine |
| CN101862815A (en) * | 2010-03-11 | 2010-10-20 | 新东工业株式会社 | Die molding machine |
| CN104128571A (en) * | 2014-07-08 | 2014-11-05 | 山西方盛液压机电设备有限公司 | Horizontal sand-ejecting and parting clay-bonded sand automatic moulding machine |
| CN104399905A (en) * | 2014-12-19 | 2015-03-11 | 济南万兴农用机械科技有限公司 | Pre-coated sand shooting type core shooter |
| CN109604535A (en) * | 2019-01-10 | 2019-04-12 | 盐城市大丰澳滨铸造有限公司 | A kind of sand core machine and its operating method |
| CN109604535B (en) * | 2019-01-10 | 2024-02-20 | 盐城市大丰澳滨铸造有限公司 | Core machine and operation method thereof |
| CN110090930A (en) * | 2019-06-05 | 2019-08-06 | 含山县富瑞机械厂 | A kind of core shooter sand hopper that flow velocity can be improved |
| CN115026246A (en) * | 2022-06-16 | 2022-09-09 | 苏州三信机器制造有限公司 | High-precision cold core machine |
| CN115026246B (en) * | 2022-06-16 | 2023-11-10 | 苏州三信机器制造有限公司 | High-precision core cooling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2463652B1 (en) | 1983-04-01 |
| DE3021644A1 (en) | 1981-03-26 |
| GB2057319B (en) | 1983-05-25 |
| FR2463652A1 (en) | 1981-02-27 |
| CH647700A5 (en) | 1985-02-15 |
| IN152826B (en) | 1984-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1738847B1 (en) | Method for manufacturing sandmold | |
| KR100721633B1 (en) | Molding machine and method for producing sand mold | |
| TW555600B (en) | Die molding machine and pattern carrier | |
| GB2057319A (en) | Moulding machine | |
| US4230172A (en) | Molding apparatus with a compressed air squeeze plate | |
| EP1240957B1 (en) | Method and apparatus for compacting molding sand | |
| GB2059836A (en) | Moulding machine | |
| JP2000334798A (en) | Hydraulic circuit for mold clamping device provided with freely movable core mold | |
| ITRE970058A1 (en) | METHOD FOR FORMING LARGE CERAMIC TILES, AND PLANT FOR IMPLEMENTING THE METHOD. | |
| KR100863104B1 (en) | Method of squeezing foundry sand, match plate, and upper and lower flasks | |
| US4566521A (en) | Moulding apparatus for making gas hardened sand mould | |
| JP4292582B2 (en) | Mold making method | |
| KR850001151B1 (en) | Moulding machine | |
| US4018857A (en) | Method and a device for the production of ceramic mouldings, and more especially of magnetized ferrite mouldings | |
| JPS6034442Y2 (en) | mold making machine | |
| JP3441065B2 (en) | Mold molding method and molding apparatus | |
| JP2001138010A (en) | Filling-compressing method for molding sand and apparatus therefor, and injecting nozzle for molding sand | |
| JPS6034443Y2 (en) | mold making machine | |
| JPS6034445Y2 (en) | mold making machine | |
| JP2001062543A (en) | Mold making device of sand mold with frame | |
| JP4096314B2 (en) | Molding method of sand mold with frame | |
| JP2001047192A (en) | Molding method of sand mold with molding flask | |
| JP3119329B2 (en) | Molding method for green sand mold | |
| JPH0710827Y2 (en) | Raw molding machine | |
| JP2568304Y2 (en) | Compressed air blowing equipment for green molding equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19960616 |