CN110625069A - Pressure device for riser - Google Patents
Pressure device for riser Download PDFInfo
- Publication number
- CN110625069A CN110625069A CN201910960914.5A CN201910960914A CN110625069A CN 110625069 A CN110625069 A CN 110625069A CN 201910960914 A CN201910960914 A CN 201910960914A CN 110625069 A CN110625069 A CN 110625069A
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- CN
- China
- Prior art keywords
- riser
- air pipe
- air
- sealing
- sealing cover
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/088—Feeder heads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A pressure device for a riser is characterized by comprising a telescopic mechanism, a riser cover pressure mechanism and a control mechanism; a riser sealing cylinder is arranged below the top plate, an air pipe air inlet hole is formed in the lower end of a cylinder rod of the riser sealing cylinder, a riser air pipe is arranged in the air pipe air inlet hole, a riser sealing cover is arranged at the lower end of the cylinder rod, a sealing ring is arranged below the riser sealing cover, and a riser air hole is formed in the riser sealing cover; a contact pressure gauge, an electromagnetic valve and a PLC (programmable logic controller) are arranged at the other end of the riser air pipe; when the riser sealing cylinder presses and seals the riser sealing cover and the riser, the molten metal flows into the riser through the mold cavity after being injected into the sprue, so that the pressure is displayed in a contact pressure gauge arranged at the other end of an air pipe on the riser cavity and the riser cover, the compressed air pressurizes the molten metal level in the riser through the riser air hole, and the molten metal in the riser, which is lower than that in the open riser, is used for pressurizing and feeding the product in the mold cavity, so that the utilization rate of the molten metal is effectively improved, and the production cost is reduced.
Description
Technical Field
The application relates to the field of casting, in particular to a pressurizing device for a riser for gravity casting.
Background
Gravity casting is the most common casting mode in the casting field, at present, the static pressure of molten metal in a pouring gate and a riser is used for feeding a product, and the feeding effect of the gravity feeding method depends on the gravity (static pressure) generated by the height of the molten metal in the pouring gate and the riser, so that excessive molten metal must be injected, more pouring gate heads and riser heads remained after feeding can be generated in the pouring gate and the riser, the process yield is reduced, the material and energy are wasted, and the production cost is high.
Disclosure of Invention
The application is directed to above-mentioned problem, provides a pressure device for rising head, improves technology yield.
According to the technical scheme of the application: a pressure device for a riser is characterized by comprising a telescopic mechanism, a riser cover pressure mechanism and a control mechanism;
the telescopic mechanism comprises a riser sealing cylinder arranged below a top plate, and a riser cover pressurizing mechanism is arranged at the lower end of a cylinder rod of the riser sealing cylinder;
the riser cap pressurizing mechanism comprises an air pipe air inlet hole arranged at the lower end of the cylinder rod, a riser air pipe arranged in the air pipe air inlet hole, a riser sealing cap arranged at the lower end of the cylinder rod, a sealing ring arranged below the riser sealing cap, and a riser air hole arranged in the riser sealing cap; the other end of the riser air pipe is provided with a control mechanism;
the control mechanism comprises a contact pressure gauge, an electromagnetic valve and a PLC (programmable logic controller) which are arranged at the other end of the riser air pipe;
the technical effects of this application lie in: when the upper metal die and the lower metal die are assembled, the riser sealing cylinder presses and seals the riser sealing cover and the riser, molten metal flows into the riser through the die cavity after being injected into the pouring gate, so that the pressure is displayed in a contact pressure gauge arranged at the other end of an air pipe on the riser cavity and the riser cover, the contact is closed after the liquid injection is finished and matched with the set pressure, the metal liquid level is lower than the metal liquid level in the open riser at the moment, the contact pressure gauge outputs a signal to a PLC (programmable logic controller), the PLC sends an instruction to the electromagnetic valve to open the electromagnetic valve, compressed air enters the air pipe to pressurize the metal liquid level in the riser through a riser air hole, and the molten metal lower than the open riser in the riser is used for timely pressurizing and feeding the product in the die cavity, so that the utilization rate of the molten metal is effectively improved, the process yield of the product is;
drawings
FIG. 1 is a schematic structural view of an upper movable mold type gravity casting machine with a pressure device for a feeder head.
Fig. 2 is a schematic structural view of a feeder seal cap in the feeder pressurizing device according to the present application, in a state in which the upper moving platen presses down the feeder seal cap, the upper metal mold and the lower metal mold are closed, and the upper metal mold and the lower metal mold are pressed down by a feeder seal cylinder to seal the feeder.
Fig. 3 is a schematic structural view showing a state in which a small feeder is used for casting in the feeder-equipped pressurizing device of the present invention.
Fig. 4 is a schematic structural view showing a state in which a small feeder is used in the feeder pressurizing device of the present invention, compressed air is injected into a feeder air hole through a gas pipe positioning frame after casting, and molten metal in a feeder cavity is pressurized to make a product fed, and then the feeder feeding liquid is left.
Fig. 5 is a structural diagram illustrating a state in which a product is currently fed by static pressure of molten metal in a gate and a riser.
Detailed Description
The following description of the embodiments of the present application will be made with reference to the accompanying drawings.
The device comprises an upper moving die type gravity casting machine (1), an upper moving die plate (2), a top plate (3), an upper moving die oil cylinder (4), an upper moving die top plate (5), an upper metal die (6), a lower metal die (7), a die cavity (8), a pouring gate (9), a riser (10), a riser sealing cylinder (11), a riser sealing cover (12), a sealing ring (13), a riser air hole (14), a riser air pipe (15), a riser cavity (16), an upper moving die shaft (17), an air pipe positioning frame (18), riser feeding liquid (19) and the like.
As shown, the present application is a pressurization device for risers.
According to the technical scheme of the application: a pressure device for a riser comprises a telescopic mechanism, a riser cover pressure mechanism and a control mechanism;
the telescopic mechanism comprises a riser sealing cylinder 11 arranged below the top plate 3 and a riser cover pressurizing mechanism arranged at the lower end of a riser sealing cylinder rod;
the riser cap pressurizing mechanism comprises an air pipe air inlet hole, a riser air pipe 15, a riser sealing cap 12, a sealing ring 13, a riser air hole 14 and an air pipe positioning frame 18; the air pipe air inlet hole is formed in the lower end of the cylinder rod, the riser air pipe 15 is arranged in the air pipe air inlet hole, the riser sealing cover 12 is arranged at the lower end of the cylinder rod, the sealing ring 13 is arranged below the riser sealing cover 12, the riser air hole 14 is formed in the riser sealing cover 12, and the riser air hole 14 is communicated with the riser air pipe 15; the air pipe positioning frame 18 is arranged at the other position of the riser air pipe 15 and positioned on the top plate 3; the control mechanism is arranged at the other end of the riser air pipe 15;
the control mechanism comprises a contact pressure gauge, an electromagnetic valve and a PLC (programmable logic controller), the contact pressure gauge is arranged in a tee joint of the riser gas pipe 15, and the electromagnetic valve is arranged at the other end of the tee joint;
in the application, when an upper movable die oil cylinder 4 on a top plate 3 contracts an upper movable die top plate 5, a metal upper die 6 under an upper movable die plate 2 connected by an upper movable die shaft 17 and a metal lower die 7 are closed, a riser sealing cylinder presses and seals a riser sealing cover and a riser, molten metal flows into the riser through a die cavity 8 after being injected into a pouring gate, so that pressure is displayed in a contact pressure gauge arranged on the other end of a riser cavity 16 and the other end of a riser air pipe, the contact pressure gauge is closed after the liquid injection is finished and is matched with the set pressure, the metal liquid level at the moment is lower than the metal liquid level in an open riser, the contact pressure gauge outputs a signal to a PLC (programmable logic controller), the PLC sends an instruction to an electromagnetic valve, the electromagnetic valve is opened, compressed air enters the air pipe, the metal liquid level in the riser is pressurized through an air hole, and the product in the die cavity is pressurized and, after the timer in the PLC controller reaches a point, the PLC controller sends a signal to enable the electromagnetic valve to discharge pressurized gas to retract to the riser sealing cover, so that the utilization rate of molten metal is effectively improved, the process yield of the product is effectively improved, and the production cost is reduced.
Claims (2)
1. A pressure device for a riser is characterized by comprising a telescopic mechanism, a riser cover pressure mechanism and a control mechanism;
the telescopic mechanism comprises a riser sealing cylinder (11) arranged below a top plate, and a riser cover pressurizing mechanism is arranged at the lower end of a cylinder rod of the riser sealing cylinder (11);
the riser cap pressurizing mechanism comprises an air pipe air inlet hole arranged at the lower end of a cylinder rod, a riser air pipe (15) arranged in the air pipe air inlet hole, a riser sealing cover (12) arranged at the lower end of the cylinder rod, a sealing ring (13) arranged below the riser sealing cover (12), and a riser air hole (14) arranged in the riser sealing cover (12); a gas pipe positioning frame (18) is arranged at the other position of the riser gas pipe (15), and a control mechanism is arranged at the other end of the riser gas pipe (15);
the control mechanism comprises a contact pressure gauge, an electromagnetic valve and a PLC (programmable logic controller) which are arranged at the other end of the riser air pipe (15);
the telescopic mechanism comprises a riser sealing cylinder arranged below the top plate and a riser cover pressurizing mechanism arranged at the lower end of a riser sealing cylinder rod;
the air pipe air inlet hole of the riser cap pressurizing mechanism is arranged at the lower end of the cylinder rod, the riser air pipe is arranged in the air pipe air inlet hole, the riser sealing cover is arranged at the lower end of the cylinder rod, the sealing ring is arranged below the riser sealing cover, the riser air hole is arranged in the riser sealing cover, and the riser air hole is communicated with the riser air pipe; the air pipe positioning frame is arranged at the other position of the riser air pipe and positioned on the top plate; the control mechanism is arranged at the other end of the riser air pipe;
the control mechanism comprises a contact pressure gauge, an electromagnetic valve and a PLC (programmable logic controller), the contact pressure gauge is arranged in a tee joint of the riser gas pipe, and the electromagnetic valve is arranged at the other end of the tee joint;
when an upper moving die oil cylinder on the top plate retracts an upper moving die top plate, a metal upper die and a metal lower die which are connected with each other through an upper moving die shaft are closed, a riser sealing cylinder presses and seals a riser sealing cover and a riser, metal liquid flows into the riser through a die cavity after being injected into a pouring gate, pressure is displayed in a contact pressure gauge arranged at the other end of a riser cavity and a riser air pipe, a contact is closed after the liquid injection is finished and matched with the set pressure, the metal liquid level at the moment is lower than the metal liquid level in an open riser, the contact pressure gauge outputs a signal to a PLC (programmable logic controller), the PLC sends an instruction to an electromagnetic valve to open the electromagnetic valve, compressed air enters the air pipe to pressurize the metal liquid level in the riser through a riser air hole, the riser feeding liquid lower than the riser feeding liquid in the open riser is used for timely pressurizing and feeding a product in the die cavity, and a, the PLC sends out signals to enable the electromagnetic valve to release pressurized gas and retract the electromagnetic valve to the riser sealing cover, so that the utilization rate of molten metal is effectively improved, the process yield of the product is effectively improved, and the production cost is reduced.
2. The pressurizing device for risers as claimed in claim 1, wherein the product is pressurized and fed by pressurizing the molten metal with gas in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960914.5A CN110625069A (en) | 2019-10-01 | 2019-10-01 | Pressure device for riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910960914.5A CN110625069A (en) | 2019-10-01 | 2019-10-01 | Pressure device for riser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110625069A true CN110625069A (en) | 2019-12-31 |
Family
ID=68975935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910960914.5A Pending CN110625069A (en) | 2019-10-01 | 2019-10-01 | Pressure device for riser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110625069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702133A (en) * | 2020-06-23 | 2020-09-25 | 马鞍山常裕机械设备有限公司 | Pressure equipment for riser |
-
2019
- 2019-10-01 CN CN201910960914.5A patent/CN110625069A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702133A (en) * | 2020-06-23 | 2020-09-25 | 马鞍山常裕机械设备有限公司 | Pressure equipment for riser |
| CN111702133B (en) * | 2020-06-23 | 2021-12-07 | 马鞍山常裕机械设备有限公司 | Pressure equipment for riser |
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