Locking mechanism for large tank container type counter-pressure casting machine

Abstract

The utility model relates to a locking mechanism for a large tank container type counter-pressure casting machine, which comprises a fixed pressing ring, a rotary pressing ring is arranged between the fixed pressing ring and the outer wall of a tank, the rotary pressing ring is connected with a driving mechanism, a wedge-shaped locking component is arranged on the rotary pressing ring, and the wedge-shaped locking component is connected with the fixed pressing ring. And the rotary pressing ring and the tank body are locked through the wedge-shaped locking part. Power drive is provided through the two oil cylinders arranged at the opposite angles, the first wedge-shaped pressing block installed on the rotary pressing ring is matched with the second wedge-shaped pressing block embedded in the tank body, downward pressing force on the tank body is formed, and the sealing effect is achieved through the cooperation of the bottom of the tank body and a sealing ring on the working table. The outer side of the rotary pressing ring is fixed by the fixed pressing ring, and upward pressing force is counteracted to the working table plate through the fixed pressing ring.

Description

Technical Field

[0001] The utility model relates to a locking mechanism, in particular to a locking mechanism used for a large tank container type differential pressure casting machine, and belongs to the technical field of differential pressure casting equipment components. Background Art

[0002] The castings of differential pressure casting are formed in a pressure environment, so the density of metal crystals is higher than that of low-pressure casting, and the moldability is good, which is more conducive to the molding of large thin-walled castings. The differential pressure casting machine in the prior art cannot pressurize and fill large-volume tanks or holding furnaces. After the tank is pressurized, it cannot provide a pressure atmosphere for the casting products. Therefore, the performance of the large aluminum alloy casting products obtained is poor, especially limiting the production of large aluminum casting products in aviation and military industries.

[0003] Furthermore, large tank equipment needs to be equipped with a heavy tank device. After the tank is in place, the equipment needs to be filled and cast. The sealing performance of the equipment after filling represents the comprehensive capability of the equipment. In order to ensure the sealing, a reliable locking device is required.

[0004] Based on this, the present utility model is proposed. Utility Model Content

[0005] In view of the above-mentioned technical problems of the prior art, the purpose of the utility model is to provide a locking mechanism for a large tank container type differential pressure casting machine, which has the advantages of high pressure, fast speed, and reliable clamping. After it is installed on the tank body, the tank body is pressurized to provide a pressure atmosphere for the casting product, and at the same time cooperates with a large insulation furnace for pressurized filling, which greatly improves the product strength performance.

[0006] In order to achieve the above object, the utility model is realized by the following technical solutions:

[0007] A locking mechanism for a large tank container type differential pressure casting machine comprises a fixed clamping ring, a rotating clamping ring is arranged between the fixed clamping ring and the outer wall of the tank body, the rotating clamping ring is connected to a driving mechanism, and a wedge-shaped locking component is arranged on the rotating clamping ring, and the rotating clamping ring and the tank body are locked by the wedge-shaped locking component.

[0008] The wedge-shaped locking component includes a wedge-shaped pressing block 1 and a wedge-shaped pressing block 2. The wedge-shaped pressing block 1 is installed on the rotating pressing ring, and the wedge-shaped pressing block 2 is installed on the tank body. The wedge-shaped pressing block 1 and the wedge-shaped pressing block 2 are meshed to achieve locking.

[0009] A sensing device is provided on one side of the fixed clamping ring, and the wedge-shaped clamping block detects the locking position through the sensing device after locking the rotating clamping ring and the tank body.

[0010] The tank body is provided with a tank body guiding mechanism and a tank body positioning mechanism. The rotating clamping ring rotates along the tank body guiding mechanism and is positioned by the tank body positioning mechanism.

[0011] The driving mechanism is a cylinder driving mechanism.

[0012] There are two driving mechanisms, and the two driving mechanisms are arranged in diagonal positions.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model is used for the locking mechanism of a large tank container type differential pressure casting machine, which is driven by two oil cylinders arranged at opposite corners, and a wedge-shaped pressing block 1 installed on a rotating pressing ring cooperates with a wedge-shaped pressing block 2 embedded in the tank body to form a downward pressing force on the tank body, and cooperates with the sealing ring on the bottom of the tank body and the workbench to form a sealing effect; the outer side of the rotating pressing ring is fixed by a fixed pressing ring, and the upward pressing force is offset to the workbench through the fixed pressing ring.

[0015] The utility model is mainly used in large tank container differential pressure casting machines. Large tank container differential pressure casting machines are new large tank casting equipment derived from traditional differential pressure casting. They are an air intake and filling system for large-volume products. The quality of the castings produced by them has been greatly improved by testing and analyzing them. The large tank container differential pressure casting machine solves the problem that large aluminum alloy casting products are difficult to perform differential pressure casting to improve product performance, improves the process of large sand casting systems, and also provides a new type of production equipment for large aluminum casting products in aviation and military industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model installed on a tank body;

[0018] Figure 3 and 4 This is a schematic diagram of the main structure of the utility model installed on a tank body;

[0019] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0020] Figure 6 for Figure 1 A schematic diagram of the enlarged structure of part B;

[0021] Figure 7 for Figure 3 A schematic diagram of the enlarged structure of the middle C part;

[0022] Figure 8 for Figure 4 A schematic diagram of the enlarged structure of the D part;

[0023] Fig. 9 This is a schematic diagram of the structure of the utility model installed in a large tank container type differential pressure casting machine;

[0024] Fig.10 This is a schematic diagram of the main structure of the utility model installed in a large tank container type differential pressure casting machine;

[0025] Fig.11 It is a schematic diagram of the structure of the sealing device in a large tank container type differential pressure casting machine;

[0026] Fig.12 It is a structural schematic diagram of a mold filling partition device in a large tank container type differential pressure casting machine;

[0027] Among them, 1 is a frame, 2 is a workbench, 3 is a tank body, 4 is a holding furnace, 5 is a locking mechanism, 51 is a fixed clamping ring, 52 is a rotating clamping ring, 53 is a driving mechanism, 54 is a wedge-shaped locking component, 541 is a wedge-shaped clamping block, 542 is a sensing device, 55 is a tank body guiding mechanism, 56 is a tank body positioning mechanism, 6 is a furnace cover mechanism, 7 is a filling partition mechanism, 71 is a main air inlet, 72 is a main air inlet pipe, 73 is a holding furnace air inlet, 74 is a holding furnace air inlet pipe, 75 is a tank body air inlet, 76 is a tank body air inlet pipe, 77 is a cylinder, 78 is a sealing piston, 79 is a pressure detection device, 8 is a holding furnace lifting mechanism, 9 is a liquid lifting device, 91 is a liquid lifting pipe, 92 is a ceramic sleeve, 93 is a sealing flange, 94 is a liquid lifting pipe flange, and 95 is a sealing gasket. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0029] Large tank equipment needs to be equipped with a heavy tank device. After the tank is in place, the equipment needs to be filled and cast. The sealing performance of the equipment after filling represents the comprehensive ability of the equipment. In order to ensure the sealing, a reliable locking device is required. The locking mechanism of this tank has the advantages of high pressure, fast speed, and reliable compression. Therefore, further settings, such as Figure 2 and 9 As shown, the utility model installs a locking mechanism 5 at the lower position of the tank body 3, and the specific structure of the locking mechanism 5 is as follows:

[0030] like Figure 1-8As shown, the locking mechanism 5 includes a fixed clamping ring 51 and a rotating clamping ring 52. The rotating clamping ring 52 is located between the fixed clamping ring 51 and the outer wall of the tank body 3. The rotating clamping ring 52 is connected to a driving mechanism 53, and a wedge-shaped locking component 54 is provided on the rotating clamping ring 52. The wedge-shaped locking component 54 includes a wedge-shaped clamping block 1 541 and a wedge-shaped clamping block 2 542. The wedge-shaped clamping block 1 541 is installed on the rotating clamping ring 52, and the wedge-shaped clamping block 2 544 is installed on the tank body 3. The wedge-shaped clamping block 1 541 and the wedge-shaped clamping block 2 542 are meshed to achieve locking. A sensing device 57 is provided on one side of the fixed clamping ring 51. After the wedge-shaped clamping block 1 541 and the wedge-shaped clamping block 542 lock the rotating clamping ring 52 and the tank body 3, the locking position is detected by the sensing device 57.

[0031] The tank body guiding mechanism 55 and the tank body positioning mechanism 56 are provided on the tank body 3, and the rotating clamping ring 52 rotates along the tank body guiding mechanism 55 and is positioned by the tank body positioning mechanism 56. The driving mechanism 53 is a cylinder driving mechanism, which drives the rotating clamping ring 52 to rotate along the tank body guiding mechanism 55 and is positioned by the tank body positioning mechanism 56. The rotating clamping ring 52 and the tank body 3 are locked by the mutual locking of the wedge-shaped clamping block 1 541 and the wedge-shaped clamping block 2 542, and the locking position is detected by the sensing device 57.

[0032] Preferably, there are two driving mechanisms 53 which are in a diagonal position relationship, that is, they are powered by two diagonally arranged oil cylinders, and a wedge-shaped pressing block 541 installed on the rotating pressing ring 52 cooperates with a wedge-shaped pressing block 542 embedded in the tank body 3 to form a downward pressing force on the tank body 3, and cooperates with the sealing ring on the bottom of the tank body 3 and the workbench 2 to form a sealing effect; the outer side of the rotating pressing ring 52 is fixed by the fixed pressing ring 51, and the upward pressing force is offset to the workbench 2 through the fixed pressing ring 51.

[0033] After the rotary clamping ring 52 of the utility model is clamped on the large tank body 3, the reliability is greatly improved, and the rotary clamping ring 52 is very convenient to use.

[0034] The utility model is mainly used in large-scale aluminum alloy casting tank-type differential pressure casting machines. Large-scale aluminum alloy casting tank-type differential pressure casting machines are new large-scale tank-type casting equipment derived from traditional differential pressure casting. It solves the problem that large-scale aluminum alloy casting products are difficult to perform differential pressure casting to improve product performance, and also provides a new type of production equipment for large-scale aluminum casting products in aviation and military industries. The castings of differential pressure casting are formed in a pressure environment, so the density of metal crystallization is higher than that of low-pressure casting, and the formability is good, which is more conducive to the forming of large thin-walled castings; in order to improve the process of large sand casting systems, differential pressure casting equipment for super-large tank containers and air intake and filling systems for large-volume products are made. By placing the mold in a super-large tank, the tank is pressurized to provide a pressure atmosphere for the casting product, and at the same time, a large insulation furnace is used for pressurized filling, which greatly improves the strength performance of the product. After on-site production, the casting products are tested and analyzed, and the product quality has been greatly improved.

[0035] like Figure 9-12 As shown, the specific technical scheme of the large tank container type differential pressure casting machine in the utility model is as follows:

[0036] It includes a frame 1, a workbench 2 is installed on the frame 1, a tank body 3 is installed above the workbench 2, a heat preservation furnace 4 is installed below the workbench 2, the tank body 3 and the heat preservation furnace 4 are connected through a liquid lifting device 9, a locking mechanism 5 is installed at the lower part of the tank body 3, and the heat preservation furnace 4 is connected with a furnace cover mechanism 6, a filling partition mechanism 7 and a heat preservation furnace lifting mechanism 8.

[0037] Preferably, the height of the tank body 1 is 2200-2800mm, and the inner diameter is 3000-3500mm, such as the inner diameter is 3200mm, and the height is 2600mm. The super-large tank body 1 is 10 times the volume of the previous differential pressure casting equipment, and meets the production of 2200x2500mm volume products. The length and width of the workbench 2 are both 3500-4200mm, and the bearing capacity of the workbench 2 is 200-250T. The available aluminum amount of the insulation furnace 4 is 2800-3200kg. For example, the size of the super-large workbench 2 is 4000x4000mm, which can withstand the super-large counter-pressure force of the tank body 210T. The available aluminum amount of the insulation furnace 4 is up to 3000Kg, which can cast large aluminum alloy castings such as high-voltage electrical and military products, solving the problem that differential pressure casting can only cast small parts in the past.

[0038] It is further provided that the lifting device 9 in the utility model includes a lifting tube 91, a sealing device is provided between the lifting tube 91 and the tank body 1, the sealing device includes a ceramic sleeve 92 sleeved on the end of the lifting tube 91, a sealing flange 93 is provided at the upper end of the ceramic sleeve 92, a lifting tube flange 94 is provided at the lower end of the ceramic sleeve 92, and a sealing gasket 95 is provided between the ceramic sleeve 92 and the lifting tube flange 93.

[0039] Further, the mold filling partition mechanism 7 in the utility model includes a main air inlet pipe 72 provided with a main air inlet 71, the main air inlet pipe 72 is connected to a heat preservation furnace air inlet pipe 74 provided with a heat preservation furnace air inlet 73, the heat preservation furnace air inlet pipe 74 is connected to a tank air inlet pipe 76 provided with a tank air inlet 75, the heat preservation furnace air inlet pipe 74 is provided with a cylinder 77, the cylinder 77 is connected with a sealing piston 78, the sealing piston 78 is located at the connection between the heat preservation furnace air inlet pipe 74 and the tank air inlet pipe 76, and the tank air inlet pipe 76 is connected with a pressure detection device 79. The sealing piston 78 is blocked by the cylinder 77, the heat preservation furnace air inlet pipe 74 is separated from the tank air inlet pipe 76, and the tank 3 is separated from the heat preservation furnace 4, so that a pressure difference is formed between the tank 3 and the heat preservation furnace 4 to meet the conditions for product filling casting. During the pressure filling casting of the tank body 3 and the holding furnace 4, a high pressure filling environment of 0.4Mpa can be achieved inside the holding furnace 4 and the tank body 3, and the filling control accuracy is ≤1mbar. It has extremely high filling control accuracy, meets a variety of fine filling control processes, and further improves the density of the product.

[0040] The utility model also realizes the combination of positive pressure and negative pressure, that is, the utility model can pressurize the holding furnace 4 to fill the mold by positive pressure filling, and pressurize the aluminum liquid in the holding furnace 4 into the mold inside the tank body 3 for casting production; it can also form a pressure difference between the tank body 3 and the holding furnace 4 by negative pressure vacuuming the tank body 3, and pump the aluminum liquid into the mold for raw casting production. This filling casting production method can be equipped with a negative pressure device for negative pressure filling production, and through the vacuum system, the casting process makes the casting more dense and compact.

[0041] The utility model can also be switched between differential pressure and low pressure mode at any time. After the tank body 3 is removed from the equipment, the program is set to low pressure casting mode, and the production can be switched. The pressurization of the tank body 3 is controlled separately, and the differential pressure and low pressure can be switched through program control. The equipment is equipped with two sets of compatible control programs. After the sealed tank body 3 is lifted, conventional production can be carried out through the low pressure casting mode. In addition, after adopting the locking mechanism of the utility model, the disassembly of the tank body 3 is very convenient.

[0042] The above embodiments are only used to explain the inventive concept of the utility model, rather than to limit the protection of the rights of the utility model. Any non-substantial changes to the utility model using this concept should fall within the protection scope of the utility model.

Claims

1. A locking mechanism for a large tank container type differential pressure casting machine, characterized in that: It comprises a fixed clamping ring, a rotating clamping ring is arranged between the fixed clamping ring and the outer wall of the tank body, the rotating clamping ring is connected with a driving mechanism, and a wedge-shaped locking component is arranged on the rotating clamping ring, and the rotating clamping ring and the tank body are locked by the wedge-shaped locking component.

2. The locking mechanism for a large tank container type differential pressure casting machine as claimed in claim 1, characterized in that: The wedge-shaped locking component includes a wedge-shaped pressing block 1 and a wedge-shaped pressing block 2. The wedge-shaped pressing block 1 is installed on the rotating pressing ring, and the wedge-shaped pressing block 2 is installed on the tank body. The wedge-shaped pressing block 1 and the wedge-shaped pressing block 2 are meshed to achieve locking.

3. The locking mechanism for a large tank container type differential pressure casting machine as claimed in claim 2, characterized in that: A sensing device is provided on one side of the fixed clamping ring, and the wedge-shaped clamping block detects the locking position through the sensing device after locking the rotating clamping ring and the tank body.

4. The locking mechanism for a large tank container type differential pressure casting machine as claimed in claim 1, characterized in that: The tank body is provided with a tank body guiding mechanism and a tank body positioning mechanism. The rotating clamping ring rotates along the tank body guiding mechanism and is positioned by the tank body positioning mechanism.

5. The locking mechanism for a large tank container type differential pressure casting machine as claimed in claim 1, characterized in that: The driving mechanism is a cylinder driving mechanism.

6. The locking mechanism for a large tank container type differential pressure casting machine as claimed in claim 1 or 5, characterized in that: There are two driving mechanisms, and the two driving mechanisms are arranged in diagonal positions.

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