EP3242761A1 - Sprueless casting machine unit with lost wax method under vacuum and over pressure - Google Patents
Sprueless casting machine unit with lost wax method under vacuum and over pressureInfo
- Publication number
- EP3242761A1 EP3242761A1 EP16706448.4A EP16706448A EP3242761A1 EP 3242761 A1 EP3242761 A1 EP 3242761A1 EP 16706448 A EP16706448 A EP 16706448A EP 3242761 A1 EP3242761 A1 EP 3242761A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moulding unit
- fluid
- mould
- shaft
- metal
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title description 5
- 238000000034 method Methods 0.000 title description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 31
- 239000010970 precious metal Substances 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- 238000005495 investment casting Methods 0.000 claims abstract description 14
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052737 gold Inorganic materials 0.000 claims abstract description 10
- 239000010931 gold Substances 0.000 claims abstract description 10
- 229910052709 silver Inorganic materials 0.000 claims abstract description 10
- 239000004332 silver Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000011505 plaster Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000001993 wax Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/026—Casting jewelry articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
Definitions
- the invention relates to sprueless casting machine unit with lost wax method under vacuum and over pressure used in shaping of precious metals such as gold and silver.
- the present invention relates to a moulding unit performing without sprue production by using adequate amount of materials for moulding and preventing waste of precious metals by means of a thruster component (piston) integrated to the moulding unit of the lost-wax casting machine.
- a thruster component priston
- lost-wax casting is used for melting and shaping of precious metals such as gold and silver. Moulds and designs of various visual qualities can be obtained by lost-wax casting.
- a plaster mould comprising wax moulds is formed for obtaining desired shapes out of precious metals as a result of moulding and thus moulding multiple numbers of bracelets, earrings, rings, and various kinds of jewelleries in a casting machine.
- this plaster mould is heated under high temperature in a blast furnace, the wax moulds found in the plaster mould melt down and moulds are formed instead of the molten waxes.
- the plaster mould is broken and the shaped state of the products is revealed. After the plaster is broken, just like a tree, the rings, earrings and similar precious metals found at the tree branches are collected by cutting by a cutter.
- a rotating mould embodiment is disclosed. It comprises a carrier that is mounted to the wax intake tank. It comprises a carrier that is rotated 180 degrees for melting the wax found in the mould tank and recovering its original state.
- a root line and branches for the flow of precious metal into mould spaces formed by lost-wax casting in a plaster mould is disclosed.
- a root part that is evacuated in order to form the body at the root part is disclosed and a demountable piece is disclosed which is mounted to the root part modularly such that it would fill the root.
- the purpose of the invention is to eliminate the technical problems encountered in the prior art lost- wax casting machine moulding units, and provide a without sprue casting operation.
- the purpose of the invention is to ensure filling precious metals directly into mould chambers found in the mould. In this way, metal would not be filled into the main flow line named sprue where extra metals are filled unnecessarily into mould chambers. As a result, adequate (required) amount of raw materials would be used and thus production costs would be minimized.
- the purpose of the invention is to ensure filling of only the branches and the product part in the main body found in the mould and thus prevent use of unnecessary raw materials in the main body.
- Another purpose of the invention is to use a thruster component or a piston-type means in order to ensure filling of the required mould spaces without filling the raw materials (gold, silver etc. precious metals) into the main body.
- Another purpose of the invention is to eliminate the extra cutting operation following moulding at a certain level by means of using adequate amount of raw materials with the novel lost-wax casting machine having a piston structure. In this way, it is aimed to reduce workmanship and time costs.
- Another purpose of the invention is to prevent high material waste, eliminate loss of time and electricity, and prevent reduction of efficiency due to operating with high rate of scrap products. Moreover, the purpose is not to wait the cooling time especially in precious metals.
- Another purpose of the invention is to ensure filling of only the required parts of the main body, instead of filling the whole main body, during the flow of precious metals, and prevent the precious metal from staying idle when the main body stays idle at the end of the operation with the downward movement of the piston.
- Another purpose of the invention is to fill the raw material into moulds gradually from top to bottom.
- the raw material is filled into the moulds from bottom to top. Therefore, a different filling technique is provided with regard to the prior art technique.
- the invention comprises a thruster component or a PLC-controlled actuator having a motion shaft, which meets said molten metal found in fluid state at the flow line, and gradually brings down the fluid-state metal such that it would be filled into the flow branches.
- Figure 1 is the general perspective view of the whole lost-wax casting machine according to the present invention.
- Figure 2 is a close-up perspective sectional view of the moulding unit according to the invention.
- Figure 3 is two-dimensional sectional front view of a moulding unit according to the invention.
- Figure 4.1 is a representative sectional view of the movable shaft first stage in the moulding unit.
- Figure 4.2 is a representative sectional view of the movable shaft second stage in the moulding unit.
- Figure 4.3 is a representative sectional view of the movable shaft third stage in the moulding unit. Reference Numbers
- FIGS 1 and 2 give the general perspective views of the whole lost-wax casting machine (100) according to the present invention.
- the invention is a lost-wax casting machine (100) moulding unit (120) comprising a melting chamber (130) in which gold, silver, and other precious metals are melted; and a moulding unit (120) having a mould chamber (122), into which the fluid-state metal (133) melted in said melting chamber (130) is poured for being moulded, and it is characterized in that;it comprises a thruster component (150) having a motion shaft (151 ), which meets said molten metal (133) found in fluid state at the flow line (124), and gradually brings down the fluid-state metal (133) such that it would be filled into the flow branches (125).
- Said thruster component (150) is preferably a piston, a motor, or a drive component that forms linear motion in y-axis.
- a piston is preferably used in this system.
- It comprises a bearing component (153) enabling said thruster component (150) to move and be centered within the main block (121 ) and a centering intermediate piece (152) which ensures guiding of said thruster component (150) motion shaft (151 ).
- it comprises a mould chamber (122) having a shaft transfer space (126) enabling linear motion and transfer of said thruster component (150) motion shaft (151 ) in y-axis.
- the motion shaft (151 ) used in the system has ceramics, glass, stainless iron, carbon graphite coal, titanium, and material durable against temperature differences.
- usage of an internal spring and an external spring (71 ) surrounding the piston shaft that is connected to the piston head (41 ) positioned inside the plaster mould (123) is also possible.
- This internal spring and external spring (71 ) preferably comprise titanium material.
- This spring is a wide-step compression spring, which facilitates the linear motion of its shaft in the flow line without hitting the side walls, prevents the plaster mould from breaking or cracking, and found within the mould beforehand.
- the way of operation of the thruster component (150) integrated into the mould chamber (122) of the lost-wax casting machine (100) and the novel production method is as follows.
- the molten metal (133) that is brought into fluid state by means of the resistance (132) is poured into the mould chamber (122) of the moulding unit (120) through the flow line (124).
- the plaster mould (123) found within the mould chamber (122) is the mould spaces left from the waxes melted in the mould chamber (122) by means of melting the moulds that previously had wax in them, in a furnace. These moulds are moulds that contain earrings, rings, and similar jewelleries.
- the molten metal (133) is poured into the plaster mould (123) through the flow line (124). However, the fluid-state metal (133) is met at the flow line (124) by the movable shaft (151 ) of the piston, i.e. the thruster component (151 ).
- the fluid-state metal is not directly filled into the plaster mould (123) as in the prior art. In the new technique, it is brought down gradually from the top to the bottom via the movable shaft (151 ). The fluid-state metal is filled into the flow branches (125) by being brought down gradually in this way.
- Figure 4.1 shows a representative sectional view of the movable shaft (151 ) first stage in the moulding unit (120). The movable shaft (151 ) that meets the molten metal (133) from the first stage ensures bringing the movable shaft (151 ) down gradually in the y-axis by means of the software (an actuator) integrated into the PLC system of the machine.
- the metal (133) filled into the flow branches (125) in the first stage is then filled into the lower flow branches (125) in the second stage and then the fluid-state metal (133) is filled into the lower flow branches (125) in the third stage.
- the metal (133) in the needed amount and predetermined basis weight is melted and filled into the moulds without the need for use of unnecessary amount of precious metals (133).
- the new production method comprises the operation steps of: - melting of said gold, silver, and other precious metals in the melting chamber (131 ), pouring the molten metal (133) through the flow line (124) while it is in fluid-state,
- the fluid-state metal (133) being gradually brought down via the movable shaft (151 ) such that it would be filled into the flow branches (125), and - bringing down said movable shaft (151 ) through the flow line (124) from y1 starting point to y2 ending point in y-axis in a speed and level determined by the software that is integrated into the PLC system.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR201500283 | 2015-01-09 | ||
PCT/TR2016/050003 WO2016111662A1 (en) | 2015-01-09 | 2016-01-06 | Sprueless casting machine unit with lost wax method under vacuum and over pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3242761A1 true EP3242761A1 (en) | 2017-11-15 |
Family
ID=55436143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16706448.4A Pending EP3242761A1 (en) | 2015-01-09 | 2016-01-06 | Sprueless casting machine unit with lost wax method under vacuum and over pressure |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3242761A1 (en) |
WO (1) | WO2016111662A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6059007B2 (en) | 1983-04-27 | 1985-12-23 | 株式会社エム・シ−・エル | Autoclave for lost wax casting |
JPH05123823A (en) * | 1991-10-30 | 1993-05-21 | Yoshida Cast Kogyo Kk | Method and device for manufacturing noble metal jewelry having plural colors |
US6349758B1 (en) | 1998-01-13 | 2002-02-26 | Louis E. Bell | Apparatus for forming a pour hole and main sprue in an investment mold for lost wax casting |
JP3004965B2 (en) * | 1998-07-10 | 2000-01-31 | 有限会社ヤマダ | Manufacturing method of precious metal ornaments |
FR2806649B1 (en) * | 2000-03-24 | 2002-05-10 | Creafusion | LOST WAX CAST IRON METHOD AND DEVICE |
-
2016
- 2016-01-06 EP EP16706448.4A patent/EP3242761A1/en active Pending
- 2016-01-06 WO PCT/TR2016/050003 patent/WO2016111662A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016111662A1 (en) | 2016-07-14 |
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