CN208929189U - Casting mechanism for middle pressure antigravity casting - Google Patents
Casting mechanism for middle pressure antigravity casting Download PDFInfo
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- CN208929189U CN208929189U CN201821795677.9U CN201821795677U CN208929189U CN 208929189 U CN208929189 U CN 208929189U CN 201821795677 U CN201821795677 U CN 201821795677U CN 208929189 U CN208929189 U CN 208929189U
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Abstract
The utility model discloses a kind of casting mechanisms for middle pressure antigravity casting, including injection oil cylinder and double formed punch injection rods；Double formed punch injection rods are made of the body of rod with the pressurizing cylinder that the post is arranged in；The supercharging piston rod edge of the pressurizing cylinder is provided with the intracorporal through-hole of bar and extends to body of rod top end face；The shank diameter that the top end diameter of supercharging piston rod is greater than supercharging piston rod constitutes inner punch, and the diameter that the top end diameter of the body of rod is greater than the body of rod constitutes outer ram；The shot piston boom end of injection oil cylinder is connected by connector with the cylinder body of pressurizing cylinder.The utility model aims at middle pressure antigravity casting and designs.Casting pressure controllable adjustment within the scope of 2-10MPa is realized by this casting mechanism outer ram, so that the investment overall cost of equipment and mold is suitable with low pressure casting；Adjust feeding pressure in 40-150MPa range by this casting mechanism inner punch, the casting strength performance and compactness of production are close to extrusion casint.
Description
Technical field
The utility model relates to non-ferrous metals casting equipment, are especially for the casting machine of middle pressure antigravity casting
Structure.
Background technique
The non-ferrous metals casting classification solidified under stress is using casting pressure as foundation.Existing pressure casting at present
The method of making has two major classes: one, low pressure casting and high-pressure casting；Two, high-pressure casting, including die casting and extrusion casint.Wherein, die casting
Method is suitable for average wall thickness in 5-6mm thin-section casting below；And to be suitable for average wall thickness big for low pressure casting and extrusion casint
In the thick-walled casting of 6mm or more.It is adapted to for the low pressure casting and Extrution casting technique of thick-walled casting, general character is all flat
Steady laminar flow fills type, consecutive solidification.Its difference is the casting pressure difference and feeding mode difference being subject to when solidification: low pressure casting
It is to solidify liquid metal under the casting pressure lower than 0.4-1MPa generated by compressed air；The feeding of low pressure casting
It is by the pressure of the liquid metal at cast gate and the riser by technological design, by the height of liquid metal not solidified in riser
The gravity that degree difference is formed carries out feeding.Extrusion casint is that hydraulic mechanism pushes the indoor formed punch of injection to generate and be greater than in pressure chamber
Liquid metal is solidified under the casting pressure of 40-200MPa；The feeding of extrusion casint is logical by high casting pressure
After having solidified but plastic deformation transmitting pressure occurs for the shell in plasticity, makes not solidified liquid metal under pressure
Feeding is carried out to region that is neighbouring, solidifying, to achieve the purpose that casting densification.
Low-pressure casting process principle is as shown in Figure 1, the type that fills of low pressure casting is to be passed through compression sky in the crucible 1.1 of sealing
Gas makes to form 0.4-1MPa casting pressure on the liquid metal liquid level 1.2 in crucible 1.1, under the effect of this casting pressure, liquid
By stalk 1.3, anti-gravity direction is filled with mold 1.4 to metal from bottom to top, and the gas in mold 1.4 is smoothly discharged；Type chamber
After being full of, casting pressure acts on the liquid metal at cast gate, carries out pressure solidification to the not solidified metal in feeding with gating region
With feeding, for compared with riser 1.5, riser 1.5 far from the region by feeding with gating, is arranged being final solidified area apart from cast gate
Domain needs the region of feeding to provide the liquid metal of feeding by the gravity that difference in height is formed for casting.
Extrution casting technique principle as shown in Fig. 2, extrusion casint fill type be injection oil cylinder 2.1 pressure effect under,
Shot piston 2.2 in injection oil cylinder 2.1 pushes the injection punch head 2.4 in injection chamber 2.3, makes liquid metal from bottom to top with layer
Stream fills type mold cavity, ensure that the gas in mold 2.5 is smoothly discharged, and type chamber makes injection full of the oil pressure of rear injection oil cylinder
Formed punch generates the casting pressure of 40-200MPa or more in injection chamber, solidifies the metal in mold cavity under high pressure
With feeding.
Low pressure casting is mainly characterized in that 1, fills type: directly being pushed away using the casting pressure that compressed air is generated as power
Dynamic liquid metal passes through the Counter-gravity Mould Filling from bottom to top of stalk 1.3；2, it solidifies: the 0.4-1MPa's generated by compressed air
Liquid metal is from distal end to 1.5 direction consecutive solidification of cast gate or riser under casting pressure；3, feeding: casting sprue region by
The casting pressure of 0.4-1MPa pushes liquid metal flows to carry out feeding, far from gate area with remaining last in riser 1.5
The feeding under the gravity of difference in height of the liquid metal of solidification.
Extrusion casint is mainly characterized in that 1, fills type: living by injection using the pressure of injection oil cylinder 2.1 as power
Plug 2.2 pushes the injection punch head 2.4 in injection chambers 2.3 by the Counter-gravity Mould Filling from bottom to top of the liquid metal in injection chamber 2.3；2,
Solidification: under the hydraulic pressure effect of injection oil cylinder 2.1,60-150MPa is generated in injection chamber 2.3 by injection punch head 2.4
Casting pressure, from the distal end apart from cast gate of casting to cast gate direction consecutive solidification；3, feeding: by the liquid of injection oil cylinder 2.1
Pressure pressure pushes liquid metal flows to not by the casting pressure that injection punch head 2.4 generates 60-150MPa in injection chamber 2.3
The liquid metal of solidification carries out feeding.
For low pressure casting since casting pressure is low, the clamp force needed is relatively low, so to equipment, the intensity of mold and rigidity
It is required that it is corresponding lower, therefore equipment investment is relatively small, and can produce biggish casting.But due to low pressure casting
Pressure is compressed air, and the control opposing hydraulic system of pressure and flow is very unstable, and controllability is poor.Due to compressed air
Pressure stability is poor and pressure is relatively low, and pressure feeding effect is limited, therefore limits the raising to cast properties.
Extrusion casint is due to using HYDRAULIC CONTROL SYSTEM, and pressure is high, and stability is good, and controllability is strong, high production efficiency, by
In High Pressure Solidification feeding, casting strength is obviously improved, and presentation quality is excellent.But extrusion casint is since squeeze pressure is very high, to setting
Standby mode locking force request is very big, higher to the intensity and rigid requirements of equipment and mold, thus equipment and mold investment is larger, and
Biggish casting cannot be produced.
Summary of the invention
The utility model aim is to provide a kind of casting mechanism for middle pressure antigravity casting, the casting mechanism structure
Principle is equally applicable to die casting and extrusion casint.
To achieve the above object, the utility model takes following technical proposals:
Casting mechanism described in the utility model for middle pressure antigravity casting, including injection oil cylinder and double formed punch injections
Bar；Double formed punch injection rods are made of the body of rod with the pressurizing cylinder that the post is arranged in；The increasing of the pressurizing cylinder
Pressure piston rod edge is provided with the intracorporal through-hole of bar and extends to body of rod top end face；The top end diameter of supercharging piston rod is greater than charged piston
The shank diameter of bar constitutes inner punch, and the diameter that the top end diameter of the body of rod is greater than the body of rod constitutes outer ram；The injection of injection oil cylinder
Piston rod end is connected by connector with the cylinder body of pressurizing cylinder.
The axis of the supercharging piston rod and the shot piston coincides.
The injection oil cylinder, the rod chamber room of pressurizing cylinder and rodless cavity room pass through hydraulic pipeline and control injection oil respectively
Cylinder is connected with pressurizing cylinder flow with the hydraulic control oil circuit of pressure.
The utility model aims at middle pressure antigravity casting and designs.By this casting mechanism outer ram, casting pressure is realized
The controllable adjustment within the scope of 2-10MPa, so that the investment overall cost of equipment and mold is suitable with low pressure casting；Pass through this
Casting mechanism inner punch adjusts feeding pressure in 40-150MPa range, and the casting strength performance and compactness of production are close to squeeze
Die casting is made.
Detailed description of the invention
Fig. 1 is the schematic diagram of existing low-pressure casting process.
Fig. 2 is the schematic diagram of existing Extrution casting technique.
Fig. 3 is the structural schematic diagram of the utility model.
Fig. 4 is the utility model for use state diagram when being poured.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
State embodiment.
As shown in figure 3, the casting mechanism described in the utility model for middle pressure antigravity casting, including 1 He of injection oil cylinder
Double formed punch injection rods；Double formed punch injection rods are made of the body of rod 2 with the pressurizing cylinder 3 that 2 bottom of the body of rod is arranged in；Pressurizing cylinder 3
Supercharging piston rod 4 extends to the top end face of the body of rod 2 along the through-hole being provided in the body of rod 2；The top end diameter of supercharging piston rod 4 is greater than
The shank diameter of supercharging piston rod 4 constitutes inner punch 5, and the diameter that the top end diameter of the body of rod 2 is greater than the body of rod 2 constitutes outer ram 6；Pressure
7 end of shot piston for penetrating oil cylinder 1 is connected by connector with the cylinder body of pressurizing cylinder 3, and supercharging piston rod 4 and injection are living
The axis of stopper rod 7 coincides.
When work, injection oil cylinder 1, the rod chamber room of pressurizing cylinder 3 and rodless cavity room pass through hydraulic pipeline and control respectively
Injection oil cylinder is connected with pressurizing cylinder flow with the hydraulic control oil circuit of pressure.
As shown in figure 4, when the utility model is used, outer ram 6 is mounted in injection chamber 8, by injection chamber 8 and mold 9
Cast gate 10 assemble connection；Then, installation at 11 position of riser is corresponded on mold 9 and squeezes feeding oil cylinder 12, makes to squeeze and mend
Logical 11 cavity of the riser composition that extends in hole of the piston rod end 13 through being provided on mold 9 of contracting oil cylinder 12 squeezes feeding head i.e.
It can.
When casting and pouring, liquid metal is poured into injection chamber 8, is started injection oil cylinder 1, is passed through the injection of injection oil cylinder 1
Piston rod 7 drives outer ram 6 that the liquid metal in injection chamber 8 is pushed to fill type to mold cavity；When liquid metal is by mold cavity
After being full of, pressurization feeding is carried out by the middle pressure casting pressure that outer ram 6 applies 2-10MPa to liquid metal；When in mold 9
After liquid metal solidification forms certain thickness shell, starting pressurizing cylinder 3 drives inner punch 5 to application 30- at cast gate 10
The squeeze pressure of 150MPa carries out high pressure feeding；After the liquid metal solidification in mold 9 forms certain thickness shell, starting
Feeding oil cylinder 12 is squeezed, extends its piston rod end 13 into 11 cavity of riser, 30-150MPa's is applied to 11 inner cavity of riser
Squeeze pressure carries out high pressure feeding.
Claims (3)
1. a kind of casting mechanism for middle pressure antigravity casting, it is characterised in that: including injection oil cylinder and double formed punch injection rods；
Double formed punch injection rods are made of the body of rod with the pressurizing cylinder that the post is arranged in；The pressurization of the pressurizing cylinder is living
Stopper rod edge is provided with the intracorporal through-hole of bar and extends to body of rod top end face；The top end diameter of supercharging piston rod is greater than supercharging piston rod
Shank diameter constitutes inner punch, and the diameter that the top end diameter of the body of rod is greater than the body of rod constitutes outer ram；The shot piston of injection oil cylinder
Boom end is connected by connector with the cylinder body of pressurizing cylinder.
2. the casting mechanism for middle pressure antigravity casting according to claim 1, it is characterised in that: the supercharging piston rod
It coincides with the axis of the shot piston.
3. the casting mechanism according to claim 1 or claim 2 for middle pressure antigravity casting, it is characterised in that: the injection oil
Cylinder, the rod chamber room of pressurizing cylinder and rodless cavity room pass through respectively hydraulic pipeline and control injection oil cylinder and pressurizing cylinder flow and
The hydraulic control oil circuit of pressure is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821795677.9U CN208929189U (en) | 2018-11-02 | 2018-11-02 | Casting mechanism for middle pressure antigravity casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821795677.9U CN208929189U (en) | 2018-11-02 | 2018-11-02 | Casting mechanism for middle pressure antigravity casting |
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| Publication Number | Publication Date |
|---|---|
| CN208929189U true CN208929189U (en) | 2019-06-04 |
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ID=66726868
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821795677.9U Active CN208929189U (en) | 2018-11-02 | 2018-11-02 | Casting mechanism for middle pressure antigravity casting |
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| CN (1) | CN208929189U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102729A (en) * | 2021-03-09 | 2021-07-13 | 清华大学 | Double-extrusion punch for extrusion casting process of large complex casting |
| CN114160770A (en) * | 2021-11-24 | 2022-03-11 | 湖南大学 | Indirect extrusion casting punch device and extrusion casting method |
-
2018
- 2018-11-02 CN CN201821795677.9U patent/CN208929189U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102729A (en) * | 2021-03-09 | 2021-07-13 | 清华大学 | Double-extrusion punch for extrusion casting process of large complex casting |
| CN114160770A (en) * | 2021-11-24 | 2022-03-11 | 湖南大学 | Indirect extrusion casting punch device and extrusion casting method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220225 Address after: 300385 room 810, block a, Luoka Financial Plaza, No. 36, Youyi South Road, Dasi Town, Xiqing District, Tianjin Patentee after: Tianjin Daliang craftsman Industrial Design Co.,Ltd. Address before: 461000 901, unit 4, building 1, paladio Garden community, Xuchang City, Henan Province Patentee before: Wen Chunling |