CN85105357A - The metal mold that is used for rotary casting of piston - Google Patents
The metal mold that is used for rotary casting of piston Download PDFInfo
- Publication number
- CN85105357A CN85105357A CN 85105357 CN85105357A CN85105357A CN 85105357 A CN85105357 A CN 85105357A CN 85105357 CN85105357 CN 85105357 CN 85105357 A CN85105357 A CN 85105357A CN 85105357 A CN85105357 A CN 85105357A
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- CN
- China
- Prior art keywords
- rising head
- metal mold
- piston
- plunger shaft
- cup
- 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
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
This metal mold is used for the middle-size and small-size aluminium piston of IC engine blank of Foundry Production rotary casting.The present invention is arranged on rising head on the end face at plunger shaft top, is coupled to each other by the gooseneck type running gate system between cone cup and the plunger shaft.During cast, aluminium liquid waters full cup earlier, rotates metal mold again, and aluminium liquid is filled with plunger shaft through rising head by the bottom, reverses after the cooled and solidified again and gets back to original pouring position, takes out piston blank.This metal mold has following advantage: the feeding capacity that 1, can strengthen rising head.Rising head weight can reduce to about half of now common piston blank rising head weight.2, pouring technology is stable.3, be cast for bottom filling, can reduce piston blank pore dreg defect.
Description
This metal mold is used for Foundry Production and pours into a mould middle-size and small-size aluminium piston of IC engine.
The technology of the casting of piston blank that extensively adopts in the modern casting is to adopt side to annotate method.Rising head is arranged on the piston both sides.Aluminium liquid injects piston by side through rising head.Rising head is all distant apart from the top land and the piston boss of thick wall part.The riser feeding poor ability, piston blank weight is 1: 1.2～1: 1.6 with the ratio of rising head weight.Waste a large amount of aluminium liquid, improved the piston cost; And repeatedly remelting reuse of rising head, iron-holder increases one by one in the aluminium alloy, has reduced the mechanical performance of piston, and improved method is to adopt the rotary casting method.Rotating mechanism and metal mold such as accompanying drawing Fig. 1 commonly used, metal mold (2) is fixed on the turntable (1), and (3) are the piston die cavity, and (4) are the piston core, and (5) are rising head, and (6) are casting ladle, and cast finishes, and metal mold is rotated with turntable.Also can rotate while pouring into a mould.The metal mold rotational angle is no more than 90 °.It is not too convenient to operate, and rising head remains side riser basically, and the feeding capacity of rising head is not still given full play to.
The purpose of inventing this metal mold improves the riser feeding ability exactly.Reduce the rising head part by weight, stablize pouring technology.The structure of metal mold such as accompanying drawing Fig. 2, (4) are metallic core, and metal mold (2) is installed on the turntable (1), and turntable (1) can rotate around axle (9).Rising head (5) is arranged on the end face at plunger shaft (3) top.Aluminium liquid injects plunger shaft (3) by gooseneck type running gate system (7) through rising head (5).Cup (8) is arranged on the side of plunger shaft (3) axis X-X, and cup (8) is shaped as cone, and cone base is ellipse garden shape or garden shape.By making line OA between cup (8) top A and rising head (5) the top ball centre O, the scope of the angle between OA and the plunger shaft center line X-X is 100 °～160 °.Angular range is 120 °～170 ° between plain line AB of cup top edge and the X-X.Cup volume be plunger shaft (3) and 1.1～1.3 times of rising head (5) total measurement (volume).Accompanying drawing Fig. 2 is original pouring position.Aluminium liquid is filled with cup (8) during cast; Do not flow into running gate system (7).Then, according to technological requirement, allow metal mold (2) press the certain speed rotation around axle (9), then automatically through running gate system (7), rising head (5) is filled with plunger shaft (3) by the bottom to aluminium liquid.Metal mold (2) is rotated further, and when the center line X-X of plunger shaft (3) arrives the upright position, stops operating.After piston blank solidified fully, metal mold (2) rotated back into original pouring position, extracted core (4) out by the top of plunger shaft (3), took out piston blank, mould assembly, and placing core (4) is prepared cast next time.
Adopt the advantage of this metal mold casting of piston blank as follows: cast finishes piston when solidifying, and rising head (5) forwards plunger shaft (3) over top to, (shown in Figure 4) as accompanying drawing and; In casting process, aluminium liquid passes through rising head (5) always, and rising head (5) temperature is higher, makes piston blank be in the consecutive solidification state, can improve the feeding capacity of rising head (5).Compare with side pouring technology commonly used now, rising head weight can significantly reduce, and piston blank weight can reduce to about 1: 0.5 with the ratio of rising head weight.When adopting this metal mold casting of piston blank, aluminium liquid is full of flow in the plunger shaft process, and to meet the cast initial flow fully little, and middle flow is big, and the last again little pouring technology requirement of flow can be avoided the influence of human factor to casting quality.Guarantee best cast effect.Extract out by the plunger shaft top, placing core, easy to operate.Mould assembly, following core, the metal mold rotation, cool time, metal mold resets, and looses core.Take out foundry goods, all can control, realize whole automations of technical process by computer.
Claims (2)
1, a kind of metal mold that is used to cast the middle-size and small-size aluminium piston of IC engine of rotary casting is made up of rising head, piston core, piston die cavity, running gate system, and feature of the present invention is; Rising head is arranged on the end face at plunger shaft top, and in the casting process, by the rotation of metal mold, aluminium liquid is full of the piston die cavity.
2, according to the described metal mold of claim 1, it is characterized in that, cup is shaped as cone, cone base is ellipse garden shape or garden shape, the volume of cup is piston die cavity and rising head total measurement (volume) 1.1～1.3 times, angular range between cup cone apex A and the rising head top ball centre O between line OA and the plunger shaft center line X-X is 100 °～160 °, and the angular range between plain line AB of cup top edge and the X-X line is 120 °～170 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105357 CN85105357A (en) | 1985-07-09 | 1985-07-09 | The metal mold that is used for rotary casting of piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105357 CN85105357A (en) | 1985-07-09 | 1985-07-09 | The metal mold that is used for rotary casting of piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85105357A true CN85105357A (en) | 1987-09-09 |
Family
ID=4794424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105357 Pending CN85105357A (en) | 1985-07-09 | 1985-07-09 | The metal mold that is used for rotary casting of piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85105357A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102397988A (en) * | 2011-12-07 | 2012-04-04 | 常熟市东涛金属复合材料有限公司 | Composite metal mould |
| US8763677B2 (en) | 2006-12-09 | 2014-07-01 | Ksm Castings Group Gmbh | Method for processing, in particular casting, a material, casting mould for carrying out the method and articles produced by the method or in the casting mould |
| CN104271288A (en) * | 2012-04-27 | 2015-01-07 | 菲特尔莫古纽伦堡有限公司 | Casting process and mould |
| CN109604525A (en) * | 2018-12-02 | 2019-04-12 | 徐州远航模具有限公司 | A kind of uniform casting mold of medical instrument production |
-
1985
- 1985-07-09 CN CN 85105357 patent/CN85105357A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8763677B2 (en) | 2006-12-09 | 2014-07-01 | Ksm Castings Group Gmbh | Method for processing, in particular casting, a material, casting mould for carrying out the method and articles produced by the method or in the casting mould |
| CN101594950B (en) * | 2006-12-09 | 2014-12-17 | Ksm铸造集团有限公司 | Method for processing, in particular casting, a material, casting mould for carrying out the method and articles produced by the method or in the casting mould |
| CN102397988A (en) * | 2011-12-07 | 2012-04-04 | 常熟市东涛金属复合材料有限公司 | Composite metal mould |
| CN104271288A (en) * | 2012-04-27 | 2015-01-07 | 菲特尔莫古纽伦堡有限公司 | Casting process and mould |
| US20150122448A1 (en) * | 2012-04-27 | 2015-05-07 | Federal-Mogul Nurnberg Gmbh | Casting process and mould |
| CN104271288B (en) * | 2012-04-27 | 2016-10-19 | 菲特尔莫古纽伦堡有限公司 | Casting method and casting mould |
| CN109604525A (en) * | 2018-12-02 | 2019-04-12 | 徐州远航模具有限公司 | A kind of uniform casting mold of medical instrument production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |