Formwork transfer tool and method

Abstract

The invention belongs to the field of investment precision casting, and discloses a mold shell transfer tool and method.The mold shell transfer tool comprises a movable base, a vertical supporting shaft sleeve is vertically fixed to the movable base, a supporting forking frame is arranged at the upper end of the vertical supporting shaft sleeve, and a working shaft sleeve is rotationally connected to the supporting forking frame; one end of the working shaft sleeve is provided with a formwork working forking frame used for forking, one end of the working shaft sleeve is provided with a handle, and the connecting position of the supporting forking frame and the working shaft sleeve is located between the formwork working forking frame and the handle. The mold shell can be rapidly and safely charged and discharged from the roasting furnace and stably transferred between the three-chamber vacuum furnace and the mold shell roasting furnace, the mold shell charging and discharging efficiency and operation safety can be improved, the metallurgical quality stability of castings is improved, and occupational potential safety hazards are reduced. The tool is low in manufacturing cost, easy to operate and easy to popularize and use.

Description

Technical Field

[0001] The present invention belongs to the field of investment precision casting, especially the loading, unloading and transfer of the shell in the high-temperature state between the three-chamber vacuum furnace and the shell baking furnace. Specifically, it is a shell transfer tooling and method. Background Art

[0002] During the investment precision casting process, molten metal needs to be poured into the high-temperature shell cavity. The equipment for castings such as superalloys is usually a three-chamber vacuum solidification furnace. Before pouring, the shell needs to be loaded and preheated in the shell baking furnace. The shell reaching the preheating temperature is transferred into the three-chamber vacuum furnace, and the molten metal in the crucible is poured into the shell. The temperature of the high-temperature shell is generally above 1000°C. For a simple shell fork, it can operate conveniently and quickly for small shells near the furnace door of the baking furnace. However, for large shells and shells inside the baking furnace, problems such as inaccurate clamping, unstable clamping, inability to hold, easy falling off, and time-consuming will occur during the clamping process, resulting in too long shell transfer time, affecting product quality, and even safety accidents such as dropping and damage during the transfer process and scalding operators. Summary of the Invention

[0003] To solve the problems existing in the prior art, the purpose of the present invention is to provide a shell transfer tooling and method. The present invention can quickly and safely load and unload the shell, improving efficiency while ensuring the safety of operators.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A shell transfer tooling includes a movable base. A vertical support bushing is vertically fixed on the movable base. A support fork and pick-up frame is provided at the upper end of the vertical support bushing. A working bushing is rotatably connected to the support fork and pick-up frame. One end of the working bushing is provided with a shell working fork and pick-up frame for forking, and one end of the working bushing is provided with a handle. The connection position between the support fork and pick-up frame and the working bushing is located between the shell working fork and pick-up frame and the handle.

[0005] Preferably, the movable base includes a tray and a plurality of wheels installed at the bottom of the tray.

[0006] Preferably, the wheels are universal wheels.

[0007] Preferably, the vertical support bushing adopts a telescopic structure.

[0008] Preferably, the vertical support bushing includes a support short bushing and a support long bushing. The lower end of the support short bushing is fixed to the movable base. The lower end of the support long bushing is inserted into the inner cavity of the support short bushing from the upper end of the support short bushing. The upper end of the support long bushing is connected to the support fork picking frame. A first limit screw is threadedly connected to the support short bushing. The first limit screw penetrates the support short bushing, and the end of the first limit screw can abut against the outer wall of the support long bushing to relatively fix the support long bushing and the support short bushing.

[0009] Preferably, there is a clearance fit between the support long bushing and the support short bushing.

[0010] Preferably, the working bushing adopts a telescopic structure.

[0011] Preferably, the working bushing includes a working short bushing and a working long bushing. One end of the working short bushing is rotatably connected to the support fork picking frame. The other end of the working short bushing is connected to the handle. One end of the working long bushing is inserted into the end of the working short bushing opposite to the handle. The other end of the working long bushing is connected to the formwork working fork picking frame. A second limit screw is threadedly connected to the working short bushing. The second limit screw penetrates the working short bushing, and the end of the second limit screw can abut against the outer wall of the working long bushing to relatively fix the working long bushing and the working short bushing.

[0012] Preferably, there is a clearance fit between the working short bushing and the working long bushing.

[0013] The present invention also provides a method for transporting formwork. The method for transporting formwork is carried out by the above-mentioned formwork transporting tooling of the present invention, and includes the following processes: When it is necessary to transport the formwork, hold the handle and push the entire formwork transporting tooling to a suitable position; then use the handle to make the formwork working fork picking frame pick up the formwork to be transported, and then press down and pull the handle to make the formwork working fork picking frame carry the formwork for transportation; when the formwork is transported to the position to be placed, lift the handle to make the formwork fall on the position to be placed, and then pull the handle to separate the formwork working fork picking frame from the formwork; Repeat the above process until all the formwork is transported.

[0014] The present invention has the following beneficial effects: In the formwork transfer tooling of the present invention, by providing a movable base, the mobility of the entire tooling is good, greatly facilitating the transfer process of the formwork; a support fork is provided at the upper end of the vertical support bushing, and the support fork is rotatably connected to the working bushing. Therefore, by means of the handle, the working bushing can be driven to rotate around the support fork, thereby realizing the flexible up-and-down movement of the formwork working fork, so that the formwork can be conveniently picked up and placed by the formwork working fork, and thus the charging and discharging of the formwork are realized. In summary, using the formwork transfer tooling of the present invention, the formwork can be conveniently picked up, placed, and transferred. In addition, the handle and the formwork working fork are respectively located at both ends of the working bushing, so that a certain distance can be maintained between the operator and the formwork, which further helps to ensure the safety of the operator. In summary, the present invention can quickly and safely realize the charging and discharging of the formwork, improving the efficiency while ensuring the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the front view of the formwork transfer tooling in the embodiment of the present invention.

[0016] Figure 2 is the left view of the formwork transfer tooling in the embodiment of the present invention.

[0017] Figure 3 is the top view of the formwork transfer tooling in the embodiment of the present invention.

[0018] Wherein: 1 - wheel, 2 - tray, 3 - support rod, 4 - support short bushing, 5 - working fork, 6 - working long bushing, 7 - handle, 8 - support fork, 9 - support long bushing, 10 - working short bushing, 11 - limit screw, 12 - locking screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0020] See Figures 1 - 3, in this embodiment, the formwork transfer tooling includes a movable base. A vertical support bushing is fixedly installed on the movable base vertically. A support fork-lifting frame 8 is provided at the upper end of the vertical support bushing. A working bushing is rotatably connected to the support fork-lifting frame 8. A formwork working fork-lifting frame 5 for fork-lifting is provided at one end of the working bushing. A handle 7 is provided at one end of the working bushing. The connection position between the support fork-lifting frame 8 and the working bushing is located between the formwork working fork-lifting frame 5 and the handle 7.

[0021] Using the formwork transfer tooling provided by the above embodiment of the present invention, the process of transferring the formwork includes the following steps: When it is necessary to transfer the formwork, hold the handle 7 and push the entire formwork transfer tooling to a suitable position; then use the handle 7 to make the formwork working fork-lifting frame 5 fork-lift the formwork to be transferred, and then press down and pull the handle 7 to make the formwork working fork-lifting frame 5 fork the formwork for transfer; when the formwork is transferred to the position to be placed, lift the handle 7 to make the formwork fall on the position to be placed, and then pull the handle 7 to separate the formwork working fork-lifting frame 5 from the formwork. Repeat the above process until all the formworks are transferred.

[0022] As a preferred implementation of the present invention, in this embodiment, the movable base can adopt the following structure: it includes a tray 2 and a plurality of wheels 1 installed at the bottom of the tray 2. Then the lower end of the vertical support bushing is fixedly connected to the tray 2. The shape of the tray 2 is not limited as long as it can fix the vertical support bushing. At least three wheels 1 need to be installed at its bottom, and the wheels 1 are distributed as much as possible at the edge of the tray 2 to ensure that the tray 2 is not easy to overturn.

[0023] As a preferred implementation of the present invention, in this embodiment, the wheel 1 adopts a universal wheel. This makes the movement process of the entire formwork transfer tooling more convenient.

[0024] As a preferred implementation of the present invention, in this embodiment, the vertical support bushing adopts a telescopic structure. This design enables the vertical support bushing to adapt to operators of different heights and is convenient for placing the formwork at different height positions, with better adaptability.

[0025] As a preferred embodiment of the present invention, the vertical support bushing in this embodiment may specifically adopt the following structure, which includes a support short bushing 4 and a support long bushing 9. The lower end of the support short bushing 4 is fixed on the movable base. The lower end of the support long bushing 9 is inserted into the inner cavity of the support short bushing 4 from the upper end of the support short bushing 4. The upper end of the support long bushing 9 is connected to the support fork 8. A first limit screw is threadedly connected to the support short bushing 4. The first limit screw penetrates through the support short bushing 4, and the end of the first limit screw can abut against the outer wall of the support long bushing 9 to relatively fix the support long bushing 9 and the support short bushing 4. In this embodiment, the length of the entire vertical support bushing can be adjusted by the depth of the support long bushing 9 inserted into the support short bushing 4, and the first limit screw can be used to relatively fix or relatively slide the support short bushing 4 and the support long bushing 9, which is convenient for operation. Preferably, there is a clearance fit between the support long bushing 9 and the support short bushing 4. In addition, the embodiment can also be provided with a plurality of support rods 3 at the connection between the support short bushing 4 and the tray 2. One end of the support rod 3 is connected to the support short bushing 4, and the other end is connected to the tray 2, so that the connection between the support short bushing 4 and the tray 2 is more stable through the support rods 3.

[0026] As a preferred embodiment of the present invention, in this embodiment, the working bushing adopts a telescopic structure. This design enables the working bushing to adapt to different sizes of operating sites. When the operating distance is relatively large, the working bushing can be extended to ensure that the operator is as far away from the membrane shell as possible to ensure operation safety; when the operating distance is relatively small, the working bushing can be shortened, which is convenient for the operation and rotation of the entire mold shell transfer tooling in a smaller space, and has better adaptability.

[0027] As a preferred embodiment of the present invention, the working bushing in this embodiment specifically includes a working short bushing 10 and a working long bushing 6. One end of the working short bushing 10 is rotatably connected to the support fork 8, and the other end of the working short bushing 10 is connected to the handle 7. One end of the working long bushing 6 is inserted into the end of the working short bushing 10 opposite to the handle 7, and the other end of the working long bushing 6 is connected to the mold shell working fork 5. A second limit screw is threadedly connected to the working short bushing 10. The second limit screw penetrates through the working short bushing 10, and the end of the second limit screw can abut against the outer wall of the working long bushing 6 to relatively fix the working long bushing 6 and the working short bushing 10. In this embodiment, the length of the entire working bushing can be adjusted by the depth of the working long bushing 6 inserted into the working short bushing 10, and the second limit screw can be used to relatively fix or relatively slide the working long bushing 6 inserted into the working short bushing 10, which is convenient for operation. Preferably, there is a clearance fit between the working short bushing 10 and the working long bushing 6.

[0028] Example 1 In the formwork transfer tooling of this embodiment, the overall tooling is approximately 3150 mm long, 500 mm wide, and 875 mm high. It includes wheels 1, a tray 2, support rods 3, support short bushings 4, support long bushings 9, a support fork 8, a handle 7, a working short bushing 10, a working long bushing 6, a working fork 5, a limit screw 11, and a locking screw 12. Among them, the wheels 1 are universal wheels, and the number is three, which are installed at the bottom of the tray 2. The tray 2 is a trapezoidal structure, with the upper bottom surface length of 300 mm, the lower bottom surface length of 500 mm, the height of 500 mm, and the plate thickness of 10 mm. The support rods 3 are hollow structures, with a length of 100 mm, and form an angle of 60° with the tray surface. The number of the support rods 3 is three, and the tray 2 is connected to the support short bushing 4 by welding to play a fixing role. The support short bushing 4 is a hollow cylinder without an upper top surface and a lower bottom surface, with a length of 600 mm, an outer diameter of 35 mm, and an inner diameter of 30 mm. The inner cylindrical surface of the support short bushing 4 has a clearance fit with the outer surface of the support long bushing 9. A locking screw 12 is threadedly connected to the support short bushing 4, and the support short bushing 4 and the support long bushing 9 are relatively fixed by the locking screw 12. The support long bushing 9 is also a hollow cylinder, with a length of 775 mm, an outer diameter of 30 mm, and an inner diameter of 25 mm, without an upper top surface and a lower bottom surface. The outer cylindrical surface of the support long bushing 9 has a clearance fit with the inner surface of the support short bushing 4. The support fork 8 is a U-shaped frame, with a height of 185 mm, a width of 60 mm, and a thickness of 10 mm. The support fork 8 is rotatably connected to the working short bushing 10 through a rotating shaft, so that the angular position of the working short bushing 10 on the support fork 8 can move freely, facilitating the fork-taking operation. The handle 7 is a hollow cylindrical structure, with a length of 450 mm, an outer diameter of 45 mm, and an inner diameter of 40 mm, and is connected to the working short bushing 10 by welding. The working short bushing 10 is a hollow cylinder without an upper top surface and a lower bottom surface, with a length of 1165 mm, an outer diameter of 36 mm, and an inner diameter of 30 mm. The inner cylindrical surface of the working short bushing 10 has a clearance fit with the outer surface of the working long bushing 6. A limit screw is threadedly connected to the working short bushing 10, and the working short bushing 10 and the working long bushing 6 are relatively fixedly connected by the limit screw. The inner surface of the working short bushing 10 has a clearance fit with the outer cylindrical surface of the working long bushing 6. The working long bushing 6 is also a hollow cylinder, with a length of 1600 mm, an outer diameter of 30 mm, and an inner diameter of 25 mm, without an upper top surface and a lower bottom surface. The outer cylindrical surface of the working long bushing 6 has a clearance fit with the inner surface of the working short bushing 10. The working fork 5 is a U-shaped frame, with a height of 370 mm, a width of 125 mm, and a thickness of 10 mm. The working fork 5 is connected to the working long bushing 6 by welding. The limit screw is a standard part, which controls the fixed position of the working long bushing 6 and the working short bushing 10, and controls the angular position of the working bushing (i.e., the whole of the working long bushing 6 and the working short bushing 10) and the support fork 8. The locking screw is a standard part, which is used to fix the fixed position of the support short bushing 4 and the support long bushing 9.

[0029] Apply the formwork transfer tooling of this embodiment during the transfer process of the formwork in the vacuum solidification furnace and the formwork baking furnace. The specific steps are as follows: a. Under cold conditions of the formwork baking furnace (including box-type electric furnace and natural gas baking furnace), use the formwork transfer tooling to load multiple formworks to be cast into the baking furnace, with the pouring cups facing downwards and arranged neatly.

[0030] b. Turn on the switch of the baking furnace and bake the formwork according to the set curve.

[0031] c. When the three-chamber vacuum furnace works to the state of loading the formwork, open the furnace door of the baking furnace, use the formwork transfer tooling to take out a single high-temperature formwork from the baking furnace, and close the furnace door of the baking furnace.

[0032] d. Open the casting chamber of the three-chamber vacuum furnace, use the transfer tooling to place a single formwork into the casting chamber of the three-chamber vacuum furnace, and close the casting chamber.

[0033] e. Evacuate the air, and pour the molten metal into the formwork.

[0034] f. After pouring is completed, break the vacuum, and use the transfer tooling to take out the formwork from the casting chamber.

[0035] g. Repeat the above work to pour multiple formworks.

[0036] In summary, the present invention can quickly and safely achieve the loading and unloading of the formwork in the baking furnace, and smoothly transfer the formwork between the three-chamber vacuum furnace and the formwork baking furnace, which can improve the loading and unloading efficiency and operation safety of the formwork, enhance the stability of the metallurgical quality of the casting, and reduce the potential occupational safety hazards. The manufacturing cost of this tooling is low, the operation is simple, and it is easy to promote and use.

[0037] Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0038] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: still can modify the specific implementation manners of the present invention or make equivalent substitutions, and any modification or equivalent substitution without departing from the spirit and scope of the present invention shall be covered within the scope of the present invention.

Claims

1. A formwork transfer tooling, characterized in that, It includes a movable base, on which a vertical support bushing is fixedly installed vertically. At the upper end of the vertical support bushing, there is a support fork-lifting frame (8). A working bushing is rotatably connected to the support fork-lifting frame (8). At one end of the working bushing, there is a formwork working fork-lifting frame (5) for fork-lifting. At one end of the working bushing, there is a handle (7). The connection position between the support fork-lifting frame (8) and the working bushing is located between the formwork working fork-lifting frame (5) and the handle (7).

2. The formwork transfer tooling according to claim 1, characterized in that, The movable base includes a tray (2) and a plurality of wheels (1) installed at the bottom of the tray (2).

3. The formwork transfer tooling according to claim 1, characterized in that, The wheels (1) are universal wheels.

4. A formwork transfer tooling according to claim 1, characterized in that, The vertical support bushing adopts a telescopic structure.

5. A formwork transfer tooling according to claim 4, characterized in that, The vertical support bushing includes a support short bushing (4) and a support long bushing (9). The lower end of the support short bushing (4) is fixed on the movable base. The lower end of the support long bushing (9) is inserted into the inner cavity of the support short bushing (4) from the upper end of the support short bushing (4). The upper end of the support long bushing (9) is connected to the support fork-lifting frame (8). A first limit screw is threadedly connected to the support short bushing (4). The first limit screw penetrates through the support short bushing (4). The end of the first limit screw can abut against the outer wall of the support long bushing (9) and make the support long bushing (9) and the support short bushing (4) relatively fixed to each other.

6. The formwork transfer tooling according to claim 5, characterized in that, A clearance fit is provided between the support long bushing (9) and the support short bushing (4).

7. The formwork transfer tooling according to claim 1, characterized in that, The working bushing adopts a telescopic structure.

8. A formwork transfer tooling according to claim 7, characterized in that, The working bushing includes a working short bushing (10) and a working long bushing (6). One end of the working short bushing (10) is rotatably connected to the support fork-lifting frame (8). The other end of the working short bushing (10) is connected to the handle (7). One end of the working long bushing (6) is inserted into the end of the working short bushing (10) opposite to the handle (7). The other end of the working long bushing (6) is connected to the formwork working fork-lifting frame (5). A second limit screw is threadedly connected to the working short bushing (10). The second limit screw penetrates through the working short bushing (10). The end of the second limit screw can abut against the outer wall of the working long bushing (6) and make the working long bushing (6) and the working short bushing (10) relatively fixed to each other.

9. A formwork transfer tooling according to claim 7, characterized in that, A clearance fit is provided between the working short bushing (10) and the working long bushing (6).

10. A method for transporting formwork, characterized in that, The formwork transportation method is carried out by using the formwork transportation tooling according to any one of claims 1-9, and includes the following process: When it is necessary to transport the formwork, hold the handle (7) and push the entire formwork transportation tooling to a suitable position; then, through the handle (7), make the formwork working fork-lifting frame (5) fork the formwork to be transported, and then press down and pull the handle (7) to make the formwork working fork-lifting frame (5) fork the formwork for transportation; when the formwork is transported to the position to be placed, lift the handle (7) to make the formwork fall on the position to be placed, and then pull the handle (7) to separate the formwork working fork-lifting frame (5) from the formwork; Repeat the above process until all the formwork is transported.

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