A loading and unloading system for precision casting molds

Abstract

The present invention provides a loading and unloading system for a precision casting mold, comprising: a die head for connecting a wax mold, the die head and the wax mold being accommodated in an undewaxed mold; a conveyor chain for conveying the undewaxed mold and the die head; a dewaxing platform arranged on the side of the conveyor chain, the dewaxing platform being used to carry the undewaxed mold for dewaxing; and a robotic arm arranged between the conveyor chain and the dewaxing platform, the robotic arm being used to move and flip the undewaxed mold, the die head, and the dewaxed mold; wherein, during loading, the robotic arm clamps the undewaxed mold from the conveyor chain to the dewaxing platform; during unloading, the robotic arm clamps the dewaxed mold from the dewaxing platform to a trolley, and the robotic arm clamps the die head from the dewaxing platform to the conveyor chain. The present invention can realize the automation of loading and unloading in the dewaxing process of the precision casting mold, thereby improving production efficiency and mold yield rate.

Description

Technical Field

[0001] The present invention relates to the technical field of precision casting, in particular to a loading and unloading system for a precision casting mold shell. Background Art

[0002] Dewaxing is a crucial step in the precision casting process. In existing technologies, both loading and unloading of materials during the dewaxing process are done manually. The mold shells are first manually transported to the dewaxing kettle for dewaxing, and then manually transferred to the firing trolley for the subsequent firing process. This dewaxing process is plagued by numerous manual operations, low production efficiency, and a high mold shell damage rate. Therefore, there is room for improvement. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a loading and unloading system for a precision casting mold shell, which is used to solve the problems of the prior art in that the dewaxing process has many manual operations, low production efficiency and high mold shell damage rate.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a loading and unloading system for a precision casting mold shell, comprising:

[0005] A die head, used for connecting to the wax pattern, wherein the die head and the wax pattern are accommodated in an undewaxed mold shell;

[0006] A conveyor chain, used for conveying the undewaxed mold shell and the die head;

[0007] a dewaxing platform, disposed on the side of the conveyor chain, and used to carry the undewaxed mold shell for dewaxing; and

[0008] A robotic arm is provided between the conveyor chain and the dewaxing platform, and is used to move and flip the undewaxed mold, the die head and the dewaxed mold;

[0009] When loading, the robotic arm clamps the undewaxed mold from the conveyor chain to the dewaxing platform; when unloading, the robotic arm clamps the dewaxed mold from the dewaxing platform to the trolley, and the robotic arm clamps the die head from the dewaxing platform to the conveyor chain.

[0010] In one embodiment of the present invention, the die head comprises:

[0011] A suspension rod, suspended on the conveyor chain;

[0012] a carrying plate connected to the bottom end of the suspension rod, wherein the top surface of the carrying plate contacts the dewaxing platform when the undewaxed mold shell is dewaxed; and

[0013] The mold rod is connected to the bottom surface of the carrier plate, and the mold rod is partially covered and connected by the wax mold.

[0014] In one embodiment of the present invention, the carrier plate is provided with a dewaxing through hole, and the dewaxing through hole is used for the outflow of wax liquid generated when the wax pattern is melted.

[0015] In one embodiment of the present invention, the dewaxing platform comprises:

[0016] A tray having a plurality of fixing holes formed on its upper surface; and

[0017] A plurality of fixing blocks are provided, each of the fixing blocks being aligned with one of the fixing holes in a vertical direction.

[0018] In one embodiment of the present invention, a fixing groove is provided on the top of the fixing block, and the fixing groove is aligned with the fixing block in the vertical direction. When the carrying plate contacts the tray, the suspension rod passes through the fixing hole, and the top end of the suspension rod cooperates with the fixing groove.

[0019] In one embodiment of the present invention, a bottom surface of the tray is provided with reinforcing ribs, and the plurality of fixing blocks are fixed on the reinforcing ribs.

[0020] In one embodiment of the present invention, the fixing holes are distributed in an array, and the distance between two adjacent fixing holes in the same array is adapted to the undewaxed mold shell.

[0021] In one embodiment of the present invention, the dewaxing platform further comprises:

[0022] a conveying frame, parallel to the conveying chain;

[0023] Wherein, the tray is slidably mounted on the conveying rack, and the conveying rack is used to convey the tray to the dewaxing kettle.

[0024] In one embodiment of the present invention, the tray is further provided with a plurality of leakage holes, and the leakage holes are used for the wax liquid generated when the wax pattern is melted to pass through.

[0025] In one embodiment of the present invention, the conveyor chain and the trolley are located on the same side of the robotic arm.

[0026] As described above, the loading and unloading system of the precision casting mold shell of the present invention has the following beneficial effects: the present invention can realize the automated execution of loading and unloading in the dewaxing process of the precision casting mold shell, reduce manual operations, and improve production efficiency and mold shell yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is a schematic plan view of a loading and unloading system for a precision casting mold shell provided by the present invention.

[0028] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a loading and unloading system for a precision casting mold shell provided by the present invention.

[0029] Figure 3 Shown is a schematic structural diagram of an undewaxed mold shell in one embodiment of the present invention.

[0030] Figure 4 Shown is a schematic structural diagram of a die head in one embodiment of the present invention.

[0031] Figure 5 Shown is a schematic structural diagram of a carrier plate in one embodiment of the present invention.

[0032] Figure 6 Shown is a cross-sectional view of a tray according to one embodiment of the present invention.

[0033] Figure 7 FIG. 1 is a schematic diagram showing the distribution of the first type of fixing holes in one embodiment of the present invention.

[0034] Figure 8 A schematic diagram showing the distribution of the second type of fixing holes in one embodiment of the present invention is shown.

[0035] Component number description

[0036] 100, die head; 110, suspension rod; 120, carrier plate; 121, dewaxing through hole;

[0037] 130, mold rod; 131, boss;

[0038] 200, conveyor chain;

[0039] 300, dewaxing platform;

[0040] 310, tray; 311, fixing hole; 3111, first type fixing hole; 3112, second type fixing hole; 312, reinforcing rib; 313, leakage hole;

[0041] 320, fixed block; 330, conveyor frame;

[0042] 400, robotic arm;

[0043] 500, undewaxed mold shell;

[0044] 600, dewaxed mold shell

[0045] 700, wax model;

[0046] 800. Trolley. DETAILED DESCRIPTION

[0047] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless they conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific embodiments, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0048] See also Figures 1 to 8 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0049] The present invention provides a loading and unloading system for precision casting molds, which can be applied in the field of precision casting technology, for example, to automatically load and unload molds during the dewaxing process of precision casting molds. The present invention has a high degree of automation, reduces manual labor intensity, improves the production efficiency of the dewaxing process of precision casting molds, and also increases the yield rate of molds.

[0050] See also Figure 1 、 Figure 2As shown, in some embodiments, the present invention proposes a loading and unloading system for a precision casting mold shell, which may include a die head 100, a conveyor chain 200, a dewaxing platform 300, and a robotic arm 400. Among them, the die head 100 can be connected to the wax mold 700, that is, the die head 100 and the wax mold 700 can be accommodated in an undewaxed mold shell 500. The die head 100 can be suspended on the conveyor chain 200, and the conveyor chain 200 can be used to transport the undewaxed mold shell 500 and the die head 100. The dewaxing platform 300 can be arranged on the side of the conveyor chain 200, which can be used to carry the undewaxed mold shell 500. When the dewaxing platform 300 carries a certain number of undewaxed mold shells 500, the dewaxing platform 300 can transport the undewaxed mold shells 500 thereon into the dewaxing kettle for dewaxing. The robot arm 400 may be disposed between the conveyor chain 200 and the dewaxing platform 300 . The robot arm 400 may be used to move and flip the die head 100 , the undewaxed mold 500 , and the dewaxed mold 600 .

[0051] In this embodiment, during the loading process of the dewaxing process, the robotic arm 400 clamps the undewaxed mold 500 from the conveyor chain 200, flips the undewaxed mold 500 180 degrees, and moves it to the dewaxing platform 300; during the unloading process of the dewaxing process, the robotic arm 400 clamps the dewaxed mold 600 from the dewaxing platform 300 and moves it to the trolley 800, then, the robotic arm 400 clamps the die head 100 from the dewaxing platform 300, flips the die head 100 180 degrees, and hangs it on the conveyor chain 200.

[0052] See also Figures 3 to 5 As shown, in some embodiments, the die head 100 may include a suspension rod 110, a carrying plate 120 and a mold rod 130. Wherein, the suspension rod 110 is located at the top of the die head 100, and the suspension rod 110 may be a cross-shaped rod, on which a cross bar and a vertical rod are provided, and the cross bar can be used for suspending and connecting to the conveyor chain 200. The carrying plate 120 is connected to the bottom end of the suspension rod 110. When the undewaxed mold shell 500 is dewaxed, the robot arm 400 can flip the undewaxed mold shell 500 180° and place it on the dewaxing platform 300. At this time, the top surface of the carrying plate 120 contacts the dewaxing platform 300 to play a supporting role. A dewaxing through hole 121 is provided on the carrying plate 120, and the dewaxing through hole 121 can be connected to the upper edge of the pouring cup of the wax mold 700 covered by the undewaxed mold shell 500. When the undewaxed mold shell 500 is dewaxed, the melted wax can flow out of the dewaxing through-hole 121. Preferably, the carrier plate 120 is circular, and the dewaxing through-hole 121 is a waist-shaped hole. A mold rod 130 can be connected to the bottom surface of the carrier plate 120. The mold rod 130 is used to connect the die head 200 and the wax mold 700. A boss 131 is provided at the top of the mold rod 130, which is used to form the pouring cup of the wax mold 700.

[0053] See also Figure 6As shown, in some embodiments, the dewaxing platform 300 may include a tray 310 and a fixing block 320. The tray 310 is used to carry the undewaxed mold shell 500 for dewaxing. The tray 310 may be a metal sheet on which a plurality of fixing holes 311 are provided. The shape of the fixing hole 311 is adapted to the suspension rod 110 so that the suspension rod 110 passes through the fixing hole 311 for fixing. In this embodiment, the shape of the fixing hole 311 may be a combination of a circular shape in the middle and rectangular shapes at both ends. In order to ensure the overall rigidity of the tray 310, a plurality of reinforcing ribs 312 are provided on the bottom surface of the tray 310. The fixing block 320 may be installed on the side of the reinforcing rib 312, and each fixing block 320 is aligned with a fixing hole 311 in the vertical direction. A fixing groove may be provided on the top of the fixing block 320, and the fixing groove is aligned with the fixing block 320 in the vertical direction. When the die head 100 is fixed on the dewaxing platform 300, the tray 310 contacts the carrier plate 120, and the suspension rod 110 passes through the fixing hole 311. The top of the suspension rod 110 cooperates with the fixing groove at the top of the fixing block 320, that is, the cross bar at the top of the suspension rod 110 and the fixing groove are aligned to prevent the die head 100 from rotating and making it impossible to remove.

[0054] See also Figure 6 As shown, in some embodiments, the tray 310 may further be provided with a plurality of liquid leakage holes 313. The plurality of liquid leakage holes 313 may be evenly distributed on the tray 310. The size of the liquid leakage holes 313 should be set to facilitate the outflow of the wax liquid and prevent large pieces of mold shell and gravel generated during dewaxing from falling into the dewaxing kettle.

[0055] See also Figure 7 、 Figure 8 As shown, in some embodiments, the fixing holes 311 are distributed in an array of multiple rows and columns. The spacing between two adjacent fixing holes 311 in the same array can be adapted to the size of the undewaxed mold 500. When the size of the undewaxed mold 500 is small, the distribution of the fixing holes 311 can be relatively dense, for example, a plurality of first-class fixing holes 3111 can be arranged in a five-row and six-column layout; when the size of the undewaxed mold 500 is large, the distribution of the fixing holes 311 can be relatively loose, for example, a plurality of second-class fixing holes 3112 can be arranged in a three-row and five-column layout. Under the premise of meeting the dewaxing production rhythm, the utilization rate of the tray 310 is maximized. The same tray 310 can be provided with fixing holes 311 distributed in a variety of array combinations to adapt to undewaxed molds 500 of various sizes.

[0056] See also Figure 2 As shown, in some embodiments, the dewaxing platform 300 may further include a conveyor rack 330. The tray 310 may be slidably mounted on the conveyor rack 330. When the tray 310 carries an undewaxed mold shell 500, the conveyor rack 330 may transport the tray 310 as a whole to the dewaxing kettle for dewaxing.

[0057] See also Figure 1 、 Figure 2 As shown, in some embodiments, the dewaxing process can be divided into three steps: loading, dewaxing, and unloading. During loading, the conveyor chain 200 first transports multiple undewaxed molds 500 sequentially to the working range of the robotic arm 400. At this time, the pouring cup of the undewaxed mold 500 faces upward. Then, the robotic arm 400 removes the undewaxed mold 500 from the conveyor chain 200 and flips it 180 degrees, i.e., with the pouring cup facing downward. The position clamped by the robotic arm 400 can be the sprue section of the undewaxed mold 500. To increase the gripping friction and prevent damage to the undewaxed mold 500, the clamping part of the robotic arm 400 can be made of elastic materials such as silicone. Finally, the robotic arm 400 can be arranged according to the size of the undewaxed mold 500, and the flipped undewaxed mold 500 can be placed in the corresponding fixing holes 311 on the dewaxing platform 300. To avoid interference during placement of the robot arm 400, the robot arm 400 can be placed in the order of far first and near later. At this time, the die head 100 can pass through the fixing hole 311, and the top of the die head 100 can be inserted into the fixing groove at the top of the fixing block 320.

[0058] During dewaxing, the conveyor rack 330 can transport the tray 310 after loading and the multiple undewaxed mold shells 500 fixed thereon as a whole to the dewaxing kettle for dewaxing. In the dewaxing kettle, the wax mold 700 will be heated and melted into wax liquid, and flow out through holes such as the dewaxing through hole 121 and the leakage through hole 313. It should be noted that when the undewaxed mold shell 500 is dipped in slurry and sanded in the previous process, sand particles will adhere to the carrier plate 120. Therefore, before the undewaxed mold shell 500 is fixed to the dewaxing platform 300, the side and top surfaces of the undewaxed mold shell 500 need to be sprayed with water to wash away the slurry and sand on the surface to prevent the sand particles from clogging the dewaxing through hole 121, resulting in the wax liquid being unable to flow out. At the same time, the water spraying treatment can also ensure that the dewaxed mold shell 600 can be separated from the die head 100 after dewaxing, and the pouring cup of the dewaxed mold shell 600 is flat.

[0059] During unloading, after the undewaxed mold shell 500 is dewaxed, it can be separated into the die head 100 and the dewaxed mold shell 600, while the wax mold 700 has melted into wax liquid and flows out. The conveyor rack 330 can move the tray 310 as a whole out of the dewaxing kettle. In the order of near first and far later, the robotic arm 400 can first move the dewaxed mold shell 600 from the tray 310 to the trolley 800 in sequence; then the robotic arm 400 clamps the die head 100, flips it 180 degrees, and suspends it on the conveyor chain 200 for the next process. In this embodiment, the trolley 800 and the conveyor chain 200 can be located on the same side of the robotic arm 400.

[0060] In summary, the present invention provides a loading and unloading system for precision casting molds, which can be applied in the field of precision casting technology. This system uses a conveyor chain to transport undewaxed molds and die heads, and a robotic arm to handle loading and unloading, thus automating the loading and unloading process during the dewaxing process. This system reduces manual labor intensity, improves production efficiency, and ensures mold yield. Therefore, this system effectively overcomes the shortcomings of the prior art and possesses high industrial value.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A loading and unloading system for precision casting mold shell, characterized in that: include: A die head, used for connecting to the wax pattern, wherein the die head and the wax pattern are accommodated in an undewaxed mold shell; A conveyor chain, used for conveying the undewaxed mold shell and the die head; A dewaxing platform is provided on the side of the conveyor chain, and is used to carry the undewaxed mold shell for dewaxing; as well as A robotic arm is provided between the conveyor chain and the dewaxing platform, and is used to move and flip the undewaxed mold shell, the die head and the dewaxed mold shell; the die head includes: a suspension rod suspended on the conveyor chain; A carrying plate connected to the bottom end of the suspension rod, wherein the top surface of the carrying plate contacts the dewaxing platform when the undewaxed mold shell is dewaxed; Dewaxing platforms include: A tray having a plurality of fixing holes formed on its upper surface; and A plurality of fixing blocks, each of the fixing blocks being aligned with one of the fixing holes in a vertical direction; A fixing groove is formed on the top of the fixing block, and the fixing groove is aligned with the fixing block in the vertical direction. When the carrying plate contacts the tray, the suspension rod passes through the fixing hole, and the top end of the suspension rod is engaged with the fixing groove; When loading, the robotic arm clamps the undewaxed mold from the conveyor chain to the dewaxing platform; when unloading, the robotic arm clamps the dewaxed mold from the dewaxing platform to the trolley, and the robotic arm clamps the die head from the dewaxing platform to the conveyor chain.

2. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The die head also includes: The mold rod is connected to the bottom surface of the carrier plate, and the mold rod is partially covered and connected by the wax mold.

3. The loading and unloading system of the precision casting mold shell according to claim 2 is characterized in that: The carrying plate is provided with a dewaxing through hole, and the dewaxing through hole is used for the outflow of wax liquid generated when the wax mold is melted.

4. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The bottom surface of the tray is provided with reinforcing ribs, and the plurality of fixing blocks are fixed on the reinforcing ribs.

5. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The fixing holes are distributed in an array, and the distance between two adjacent fixing holes in the same array is adapted to the undewaxed mold shell.

6. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The dewaxing platform also includes: a conveying frame, parallel to the conveying chain; Wherein, the tray is slidably mounted on the conveying rack, and the conveying rack is used to convey the tray to the dewaxing kettle.

7. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The tray is further provided with a plurality of leakage holes, and the leakage holes are used for passing the wax liquid generated when the wax mold is melted.

8. The loading and unloading system of the precision casting mold shell according to claim 1 is characterized in that: The conveyor chain and the trolley are located on the same side of the robotic arm.

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