CN111014620A - Production equipment of thin-wall casting for investment casting - Google Patents
Production equipment of thin-wall casting for investment casting Download PDFInfo
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- CN111014620A CN111014620A CN202010032696.1A CN202010032696A CN111014620A CN 111014620 A CN111014620 A CN 111014620A CN 202010032696 A CN202010032696 A CN 202010032696A CN 111014620 A CN111014620 A CN 111014620A
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- sealing
- cover plate
- tank body
- lifting mechanism
- thin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
Abstract
Production equipment of a thin-wall casting for investment casting comprises a sealed tank body, a lifting mechanism, a turnover mechanism, a sealing mechanism and a mould shell pressing and adjusting mechanism; the top opening of the sealed tank body is provided with an air exhaust port, the lifting mechanism is arranged on the outer side wall of the sealed tank body, the turnover mechanism is arranged on the lifting mechanism and is driven to lift by the lifting mechanism, the sealing mechanism comprises a sealing cover plate, the sealing cover plate is connected with the turnover mechanism and is driven to turn over by the turnover mechanism, the sealing cover plate is provided with a center hole, and the formwork pressing and adjusting mechanism is arranged on the lower end face of the sealing cover plate of the sealing mechanism. The production equipment realizes the pouring and filling of the gravity and the suction of the molten steel for the thin-wall casting, and the molten steel is poured into the mold shell in the air suction state in the gravity state, so that the negative pressure can give a certain acceleration to the molten steel, the molten steel can be filled at a high speed, a good solidification temperature field is formed, the filling time is shortened, and the good appearance quality and the internal quality of the casting are ensured.
Description
Technical Field
The invention belongs to the technical field of investment casting equipment, and particularly relates to production equipment of a thin-wall casting for investment casting.
Background
Investment casting is a common precision casting technique that is a casting process in which molten metal is gravity poured into a high temperature mold shell to form a casting. Investment casting, also known as lost wax casting, is precise and complex, is close to the final shape of a part, and has wide application in various industries. However, with the social development, the parts are large in size, thin in wall and combined by multiple parts, and the traditional gravity pouring can not meet the product quality requirement.
When a thin-wall part is poured by adopting a traditional gravity casting mode, because the mold filling speed is low, in order to enable molten steel to fill the mold to each part to complete mold filling and feeding, a very complex pouring system needs to be designed, so that the radiation heat of the pouring system is large, the casting is shrunk and loosened, and the appearance quality of the casting is unqualified.
Disclosure of Invention
The invention aims at the problems and provides production equipment of a thin-wall casting for investment casting.
The purpose of the invention can be realized by the following technical scheme: production equipment of a thin-wall casting for investment casting comprises a sealed tank body, a lifting mechanism, a turnover mechanism, a sealing mechanism and a mould shell pressing and adjusting mechanism; the improved structure of the mold comprises a sealing mechanism, a lifting mechanism, a mold shell pressing and adjusting mechanism and a mold shell, wherein the top of the sealing tank body is opened, an air exhaust port is formed in the sealing tank body, the lifting mechanism is installed on the outer side wall of the sealing tank body, the lifting mechanism is installed on the lifting mechanism and driven to lift by the lifting mechanism, the sealing mechanism comprises a sealing cover plate, the sealing cover plate is connected with the lifting mechanism and driven to turn over by the lifting mechanism, a center hole is formed in the sealing cover plate, and.
Further, elevating system includes elevating power source, elevating system base, and the elevating power source passes through the elevating system base and installs on the lateral wall of the sealed jar of body. The lifting mechanism further comprises a lifting mechanism guard plate, and the lifting mechanism guard plate is arranged beside the lifting power source and connected with the lifting mechanism base.
Furthermore, the turnover mechanism comprises a turnover mechanism base, a transmission shaft and a turnover hand wheel, wherein the turnover mechanism base is arranged on the lifting mechanism, the transmission shaft penetrates through the turnover mechanism base and is arranged along the radial direction of the sealed tank body, and the turnover hand wheel is connected with the radial outer end of the transmission shaft; the sealing mechanism further comprises a sealing positioning base, the sealing positioning base is installed on the upper end face of the sealing cover plate, and the sealing positioning base is connected with the radial inner end of the transmission shaft of the turnover mechanism.
Furthermore, the sealing mechanism further comprises a heat-resistant sealing upper flange and a heat-resistant sealing lower flange, the heat-resistant sealing upper flange and the heat-resistant sealing lower flange are respectively arranged on the upper end face and the lower end face of the sealing cover plate, and the inner hole of the heat-resistant sealing upper flange and the inner hole of the heat-resistant sealing lower flange are arranged corresponding to the central hole of the sealing cover plate.
Further, the formwork pressing and adjusting mechanism comprises 2 support rods, 2 lead screws, a pressing plate and a lock catch, wherein the 2 support rods are arranged along the central line of the sealing cover plate in a central symmetry mode, the upper ends of the 2 support rods are connected with the sealing cover plate, the 2 lead screws are connected onto the pressing plate in a threaded mode and are arranged corresponding to the 2 support rods, the upper end of one lead screw is hinged to the lower end of one support rod, the upper end of the other lead screw is in butt fit with the lower end of the other support rod, and the other lead screw or the pressing plate and the other support rod are provided with the lock catch matched with.
Furthermore, elevating system and tilting mechanism are two sets ofly, and two sets of elevating system are central symmetry along the axis of the sealed jar of body and set up, and two sets of tilting mechanism install respectively on two sets of elevating system to be central symmetry along the axis of the sealed jar of body and set up.
Further, the outer side wall of the sealed tank body is provided with a handle, and the bottom of the sealed tank body is provided with a roller.
Furthermore, the production equipment also comprises a vacuum pump set and a connection control system, wherein the vacuum pump set is connected with the air suction port of the sealed tank body through the connection control system. The pouring cup is used for being arranged on a pouring gate of the formwork.
Compared with the prior art, the invention has the beneficial effects that: the production equipment realizes the pouring and filling of the gravity and the suction of the molten steel for the thin-wall casting, and the molten steel is poured into the mold shell in the air suction state in the gravity state, so that the negative pressure can give a certain acceleration to the molten steel, the molten steel can be filled at a high speed, a good solidification temperature field is formed, the filling time is shortened, and the good appearance quality and the internal quality of the casting are ensured.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
FIG. 2 is a cross-sectional view of an embodiment.
FIG. 3 is a schematic diagram of an embodiment in an idle state.
Fig. 4 is a schematic diagram illustrating a lifting mechanism of an embodiment of the present invention.
Fig. 5 is a schematic structural view illustrating the turnover mechanism driving the sealing cover plate to turn 180 ° in one embodiment.
FIG. 6 is a schematic view of an embodiment of a pressing device of a formwork pressing adjustment mechanism.
FIG. 7 shows an embodiment of a formwork engagement mechanism for a formwork compression adjustment mechanism.
FIG. 8 is a schematic view of an embodiment of a pressing device for pressing a formwork.
Fig. 9 is a schematic structural view illustrating the turnover mechanism driving the sealing cover plate to turn 180 ° again in one embodiment.
FIG. 10 is a schematic view of an embodiment of a pouring cup mounted on a mold shell.
The components in the figures are labeled as follows:
1 sealed tank body
2 air exhaust port
3 handle
4 contact roller
5 Hydraulic cylinder
6 lifting mechanism base
7 lifting mechanism guard board
8 turnover mechanism base
9 drive shaft
10 upset hand wheel
11 sealing cover plate
12 sealed positioning base
13 sealed heat-resistant upper flange
14 sealed heat-resisting lower flange
15 lock catch
16 screw mandrel
17 mould shell
18 pouring cup.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in conjunction with the accompanying drawings to make it clear to those skilled in the art how to practice the present invention. While the invention has been described in connection with preferred embodiments thereof, these embodiments are merely illustrative, and not restrictive, of the scope of the invention.
Referring to fig. 1 and 2, the production equipment of the thin-wall casting for investment casting mainly comprises a sealed tank body 1, a lifting mechanism, a turnover mechanism, a sealing mechanism, a mould shell pressing and adjusting mechanism, a vacuum pump set, a connection control system and a pouring cup 18.
The top of the sealed tank body 1 is opened, and the sealed tank body 1 is provided with an air exhaust port 2 for connecting a vacuum system. Preferably, as shown in the present embodiment, the air exhaust port 2 is opened on the side wall of the sealed tank 1, so as to facilitate the connection operation; the air exhaust port 2 can also be arranged at the bottom of the sealed tank body 1. The outer side wall of the sealed tank body 1 is provided with a handle 3, the bottom of the sealed tank body 1 is provided with a roller 4, and the handle 3 and the roller 4 are convenient for the sealed tank body 1 to move.
The lifting mechanism is arranged on the outer side wall of the sealed tank body 1. The lifting mechanism mainly comprises a lifting power source, a lifting mechanism base 6 and a lifting mechanism guard plate 7. The lifting power source is fixedly connected to the outer side wall of the sealed tank body 1 through the lifting mechanism base 6, the lifting mechanism guard plate 7 is arranged beside the lifting power source and is connected with the lifting mechanism base 6, and the lifting mechanism guard plate 7 plays a role in protection. Preferably, as shown in the present embodiment, the lifting power source is a hydraulic cylinder 5; the lifting power source can also be a cylinder; besides hydraulic and pneumatic power, the lifting mechanism can also adopt electric or other prior art to realize the lifting function.
The turnover mechanism is arranged on the lifting mechanism and is driven by the lifting mechanism to lift. Tilting mechanism includes tilting mechanism base 8, transmission shaft 9, upset hand wheel 10, and 8 fixed connection of tilting mechanism base are on elevating system's the lift power supply, and on tilting mechanism base 8 was worn to locate by transmission shaft 9 to along the radial setting of the sealed tank body 1, upset hand wheel 10 fixed connection is on the radial outer end of transmission shaft 9.
The sealing mechanism is connected with the turnover mechanism and is driven by the turnover mechanism to turn over. The sealing mechanism comprises a sealing cover plate 11, a sealing positioning base 12, a sealing heat-resistant upper flange 13 and a sealing heat-resistant lower flange 14, wherein the sealing cover plate 11 is matched with an opening at the top of the sealing tank body 1, a central hole is formed in the sealing cover plate 11, the sealing positioning base 12 is installed on the upper end face of the sealing cover plate 11 and is fixedly connected with the radial inner end of a transmission shaft 9 of the turnover mechanism, the sealing heat-resistant upper flange 13 and the sealing heat-resistant lower flange 14 are fixedly connected to the upper end face and the lower end face of the sealing cover plate 11 respectively, an inner hole of the sealing heat-resistant upper flange is arranged corresponding to the central hole of the sealing cover plate 11, the sealing heat-resistant upper flange 13 is used for providing auxiliary positioning for a pouring gate of a formwork.
The formwork pressing and adjusting mechanism is arranged on the lower end face of a sealing cover plate 11 of the sealing mechanism. The mould shell pressing and adjusting mechanism comprises 2 supporting rods, 2 lead screws 16, a pressing plate and a lock catch 15, wherein the 2 supporting rods are arranged along the central line of the sealing cover plate 11 in a central symmetry mode, the upper ends of the 2 supporting rods are fixedly connected to the sealing cover plate 11, the 2 lead screws 16 are connected to the pressing plate in a threaded mode and are arranged corresponding to the 2 supporting rods, the upper end of one lead screw 16 is hinged to the lower end of one supporting rod, the upper end of the other lead screw 16 is in butt fit with the lower end of the other supporting rod, and the other lead screw 16 or the pressing plate and the other supporting rod are provided with the.
The vacuum pump set is connected with the air pumping port 2 of the sealed tank body 1 through the connection control system, the vacuum pump set is used for pumping air, and the connection control system is used for connecting the sealed tank and the vacuum pump set and controlling and adjusting pressure.
The pouring cup 18 is mounted on a pouring gate of the mold shell 17 and is arranged on the upper side of the sealing cover plate 11 of the sealing mechanism.
In this embodiment, elevating system and tilting mechanism are two sets ofly, and two sets of elevating system are central symmetry along the axis of the sealed tank body 1 and set up, and two sets of tilting mechanism install respectively on two sets of elevating system to be central symmetry along the axis of the sealed tank body 1 equally and set up.
The structure of the production equipment in the non-working state is shown in figure 3. The production equipment has the following working procedures:
1. and starting a vacuum pump set to pump air, and establishing process required pressure through an air storage tank in the vacuum pump set.
2. Referring to fig. 4, the hydraulic cylinder 5 of the lifting mechanism is lifted to drive the turnover mechanism, the sealing mechanism and the formwork pressing and adjusting mechanism to rise to the required position, at this time, the sealing gland of the sealing mechanism is separated from the top opening of the sealed tank body 1, and the formwork pressing and adjusting mechanism is located above the top opening of the sealed tank body 1.
3. Referring to fig. 5, the turning hand wheel 10 of the turning mechanism is operated to turn the sealing cover plate 11 to the reverse side by the transmission of the transmission shaft 9 and the driving of the sealing positioning base 12 of the sealing mechanism, so as to prepare for the subsequent assembly of the formwork 17, and at this time, the formwork pressing and adjusting mechanism is located on the upper side of the sealing cover plate 11.
4. Referring to fig. 6, the lock 15 of the formwork pressing adjustment mechanism is unlocked, and the pressing plate is opened. Then, referring to fig. 7, the baked mold shell 17 is placed into the mold shell pressing adjustment mechanism, so that the gate of the mold shell 17 is installed into the inner hole of the heat-resistant sealing lower flange 14, the center hole of the sealing cover plate 11, and the inner hole of the heat-resistant sealing upper flange 13, and the sealing surface of the mold shell 17 is in contact with the end surface of the heat-resistant sealing lower flange 14. Finally, referring to fig. 8, the pressing plate is covered, the lock catch 15 is locked, and the adjusting screw 16 adjusts the position of the pressing plate to ensure that the pressing plate presses the formwork 17, and the sealing surface of the formwork 17 is in contact with and sealed with the end surface of the heat-resistant lower sealing flange 14.
5. Referring to fig. 9, the turning hand wheel 10 of the turning mechanism is operated again, and the sealing cover plate 11 is turned to the front side by the transmission of the transmission shaft 9 and the driving of the sealing positioning base 12 of the sealing mechanism.
6. Referring to fig. 10, the hydraulic cylinder 5 of the lifting mechanism descends to drive the turnover mechanism, the sealing mechanism and the formwork pressing adjustment mechanism to descend to the initial position, at this time, the sealing gland of the sealing mechanism is attached to and pressed against the top opening of the sealed tank body 1, and the formwork pressing adjustment mechanism and the assembled formwork 17 are both located in the sealed tank body 1. Thereafter, a pouring cup 18 is attached to the pouring gate of the mold shell 17, and pouring and negative pressure are prepared.
7. And (3) starting the connection control system to communicate the inside of the sealed tank body 1 with the vacuum pump set, so that the inside of the sealed tank body 1 reaches the set process parameters.
8. After the inside of the sealed tank body 1 reaches the set process parameters, molten steel is poured into the mould shell 17 from the pouring cup 18.
9. After the molten steel is poured, the process is kept for a certain time, so that the molten steel is filled.
10. The hydraulic cylinder 5 of the lifting mechanism is lifted to drive the turnover mechanism, the sealing mechanism and the mould shell pressing and adjusting mechanism to ascend to the required position.
11. The turnover hand wheel 10 of the turnover mechanism is operated, and the sealing cover plate 11 is turned over to the reverse side through the transmission of the transmission shaft 9 and the driving of the sealing positioning base 12 of the sealing mechanism.
12. And unlocking the lock catch 15 of the mould shell pressing adjusting mechanism, opening the pressing plate and unloading the cast casting.
It can be seen that the molten steel is poured into the mold shell 17 in the air-pumping state in the gravity state, so that the negative pressure can give a certain acceleration to the molten steel, the molten steel can be shaped at a high speed, and a good solidification temperature field is formed, thereby ensuring good appearance quality and internal quality of castings.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention shall include those alterations or substitutions and modifications which are obvious to those of ordinary skill in the art, and shall be subject to the appended claims.
Claims (10)
1. Production equipment of a thin-wall casting for investment casting is characterized by comprising a sealed tank body, a lifting mechanism, a turnover mechanism, a sealing mechanism and a mould shell pressing and adjusting mechanism; the improved structure of the mold comprises a sealing mechanism, a lifting mechanism, a mold shell pressing and adjusting mechanism and a mold shell, wherein the top of the sealing tank body is opened, an air exhaust port is formed in the sealing tank body, the lifting mechanism is installed on the outer side wall of the sealing tank body, the lifting mechanism is installed on the lifting mechanism and driven to lift by the lifting mechanism, the sealing mechanism comprises a sealing cover plate, the sealing cover plate is connected with the lifting mechanism and driven to turn over by the lifting mechanism, a center hole is formed in the sealing cover plate, and.
2. The apparatus for producing thin-walled castings according to claim 1, wherein the lifting mechanism comprises a lifting power source, a lifting mechanism base, and the lifting power source is mounted on the outer sidewall of the sealed pot through the lifting mechanism base.
3. The apparatus for producing a thin-walled casting for investment casting of claim 2 wherein the lift mechanism further comprises a lift mechanism shield, the lift mechanism shield being disposed beside the lift power source and connected to the lift mechanism base.
4. The production equipment of the thin-wall casting for investment casting according to claim 1, wherein the turnover mechanism comprises a turnover mechanism base, a transmission shaft and a turnover hand wheel, the turnover mechanism base is mounted on the lifting mechanism, the transmission shaft penetrates through the turnover mechanism base and is arranged along the radial direction of the sealed tank body, and the turnover hand wheel is connected with the radial outer end of the transmission shaft; the sealing mechanism further comprises a sealing positioning base, the sealing positioning base is installed on the upper end face of the sealing cover plate, and the sealing positioning base is connected with the radial inner end of the transmission shaft of the turnover mechanism.
5. The apparatus for producing a thin-walled casting for investment casting according to claim 1, wherein the sealing mechanism further comprises a heat-resistant sealing upper flange and a heat-resistant sealing lower flange, the heat-resistant sealing upper flange and the heat-resistant sealing lower flange are respectively mounted on the upper end face and the lower end face of the sealing cover plate, and inner bores thereof are provided corresponding to the central hole of the sealing cover plate.
6. The apparatus for producing a thin-walled casting according to claim 1, wherein the mold shell pressing adjustment mechanism comprises 2 support rods, 2 lead screws, a pressing plate, and a lock catch, wherein the 2 support rods are arranged symmetrically around the center line of the sealing cover plate and the upper ends of the support rods are connected with the sealing cover plate, the 2 lead screws are connected to the pressing plate in a threaded manner and are arranged corresponding to the 2 support rods, the upper end of one lead screw is hinged to the lower end of one support rod, the upper end of the other lead screw is in butt fit with the lower end of the other support rod, and the other lead screw or the pressing plate and the other support rod are provided with a lock catch which is matched with each other.
7. The apparatus for producing a thin-walled casting according to claim 1, wherein the lifting mechanism and the turning mechanism are provided in two sets, the two sets of lifting mechanisms are arranged in a central symmetry along the axis of the sealed pot, and the two sets of turning mechanisms are respectively mounted on the two sets of lifting mechanisms and arranged in a central symmetry along the axis of the sealed pot.
8. The production equipment of the thin-wall casting for investment casting according to claim 1, wherein a handle is arranged on the outer side wall of the sealing tank body, and a roller is arranged at the bottom of the sealing tank body.
9. The production equipment of the thin-wall casting for investment casting according to any one of claims 1 to 8, further comprising a vacuum pump set and a connection control system, wherein the vacuum pump set is connected with the air suction port of the sealed tank body through the connection control system.
10. The apparatus for producing thin-walled castings for investment casting according to claim 9, further comprising a tundish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032696.1A CN111014620A (en) | 2020-01-13 | 2020-01-13 | Production equipment of thin-wall casting for investment casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032696.1A CN111014620A (en) | 2020-01-13 | 2020-01-13 | Production equipment of thin-wall casting for investment casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111014620A true CN111014620A (en) | 2020-04-17 |
Family
ID=70198965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010032696.1A Pending CN111014620A (en) | 2020-01-13 | 2020-01-13 | Production equipment of thin-wall casting for investment casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111014620A (en) |
-
2020
- 2020-01-13 CN CN202010032696.1A patent/CN111014620A/en active Pending
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