Indenting tool for anti-overflow riser nest
By using a press-hole tooling that prevents overflow and riser holes during metal casting, the waste of materials and operating safety hazards caused by overflow of iron is solved, and efficient overflow iron collection and cleaning is achieved, reducing production costs and operating hours.
Patent Information
- Application Number
- CN202421628932.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-10
AI Technical Summary
During the metal casting process, the prior art is difficult to effectively prevent the overflow of iron, resulting in waste of materials, reduced sand box strength and operating safety hazards, and the efficiency of cleaning overflowed iron is low, increasing production costs.
A pressing workpiece for preventing overflow and rising holes is adopted, including iron spheres, press rods and handles. By pressing on the surface of the upper sand mold surface to form pressing the pressing grooves and pressing holes, the overflowing iron liquid is collected and concentrated, thereby reducing the formation and cleaning of overflow iron.
It effectively reduces the workload of overflow iron formation and cleaning, reduces production costs, improves operational safety and efficiency, and saves operating hours and subsequent coatings.
Smart Images
Figure CN222902566U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to an auxiliary tool for casting pouring, and particularly relates to a dimple tool for preventing overflow riser nests. Background Art
[0002] In metal casting, generally according to the structural characteristics of the casting, risers are used on the upper sand mold surface for the thicker and larger parts and hot spot parts of the casting, and risers and casting vent holes are used for the corners and high positions of the casting. Thus, the molten metal is used to compensate the casting parts or remove slag at the corners and other positions.
[0003] During the casting production process, it is necessary to add a sand riser (i.e., an overflow riser) on the upper side of the riser or vent hole on the upper sand mold surface of the molten iron to be poured, which is used to collect the molten iron overflowing from the riser or vent hole on the upper sand mold surface. Ordinary sand risers not only require corresponding mold production, but also need to use resin sand to bond and surround the sand riser with the sand mold. However, it is still difficult to completely avoid the phenomenon of molten iron overflowing out of the sand box, which wastes labor costs, is time-consuming and laborious in operation, and the production cost is relatively high.
[0004] During the casting process of the casting, especially for traditional manual casting operations, it is often necessary to pack the ladle during the casting process. If the timing of the molten iron filling is not accurately controlled, the discharged molten iron will overflow on the surface of the sand mold, resulting in material waste. Moreover, the overflowed molten iron will adhere to the sand box ribs after cooling, which is likely to cause the reduction of the sand box strength. At the same time, the overflowed molten iron will be connected into a whole with the molten iron at the riser and / or vent hole on the upper sand mold surface, which will greatly increase the cleaning and transfer workload of the overflowed iron on the sand mold surface before the casting is opened. In addition, there are many operation safety hazards, reducing the overall process turning efficiency.
[0005] How to prevent abnormal overflow after the molten iron is discharged and solve the cleaning of the overflowed molten iron on the sand mold surface is a problem that needs to be solved in the casting production process. At the same time, there is an urgent need to reduce costs and increase efficiency in the production process and enhance the market competitiveness. Content of the Utility Model
[0006] The technical problem to be solved by the utility model is to provide a dimple tool for preventing overflow riser nests in view of the deficiencies of the prior art. The dimple tool is convenient and efficient to operate, can work flexibly with the mold, has low cost investment. When the operator uses the dimple tool of the utility model for dimple modeling, the modeling positions of the proposed dimple grooves and dimple pits can be flexibly selected near the riser and / or vent hole on the upper sand mold surface, avoiding the sand box ribs, and making multiple risers and / or vent holes share a dimple pit as much as possible. Thus, the number of mold surfaces can be reduced, the cleaning efficiency of the overflowed iron can be improved, the safety hazards caused by cleaning the overflowed iron can be reduced, and at the same time, the operation man-hours and the subsequent coating amount can be saved.
[0007] The technical solution adopted by the present utility model to solve the above technical problems is as follows: A dimple tooling for preventing overflow riser nests, comprising an iron sphere, a pressing rod and a handle. The bottom of the iron sphere is spherical. The pressing rod is horizontally fixed on one side in the radial direction of the iron sphere, and the pressing rod is located above the spherical surface at the bottom of the iron sphere. The handle is vertically fixed on the top of the iron sphere. The pressing rod is used to press on the surface of the upper sand mold to form a dimple groove connected to the riser and / or exhaust hole on the surface of the upper sand mold, and the iron sphere is used to press on the surface of the upper sand mold to form a dimple pit connected to the dimple groove.
[0008] The dimple tooling of the present utility model can realize the rapid shaping of the dimple groove and the dimple pit, with convenient and efficient operation, can operate flexibly along with the production line, and has low cost investment. After the resin sand shaping of the sand box is completed and the upper mold sand mold surface is scraped flat, when carrying out the shaping operation of the dimple groove and the dimple pit, the operator can flexibly select the shaping positions of the dimple groove and the dimple pit near the riser and / or exhaust hole on the upper sand mold surface, avoid the sand box ribs, and try to make multiple risers and / or exhaust holes share a dimple pit, so as to reduce the number of mold surfaces, improve the cleaning efficiency of the overflow iron, reduce the safety hazards caused by cleaning the overflow iron, and at the same time save operation man-hours and the subsequent coating application amount. After the dimple groove and the dimple pit are shaped on the surface of the sand mold, pull out the riser and / or exhaust hole process tooling (riser rod and / or exhaust hole pipe) of the sand mold; after the resin sand on the surface of the sand box is completely hardened, clean the loose sand on the sand mold surface; at the same time, apply coatings to all the dimple grooves and dimple pits to ensure that the surface of the collected molten iron is smooth and free of impurity adhesion after solidification; and the volume of the solidified overflow iron is small and can be used as a remelting material without subsequent cutting operations.
[0009] The anti-overflow riser nest composed of the dimple groove and the dimple pit can reduce the usage amount of ordinary sand risers, and at the same time can reduce the height of the sand box, can save the usage amount of resin sand required for filling the sand box and surrounding and fixing the sand riser, and reduce the man-hours of labor.
[0010] The dimple tooling of the utility model presses to form dimple grooves and dimple pits on the surface of the upper sand mold surface. During the casting process of the casting, the molten iron overflowing from the riser and / or exhaust hole on the upper sand mold surface enters the dimple grooves and flows into the dimple pits for centralized collection and use of the overflowing molten iron, preventing the molten iron from overflowing through the riser and / or exhaust hole on the upper sand mold surface to the surface of the sand mold to form overflowing iron. At the same time, the operator can visually observe the overflow situation of the molten iron and the collection situation of the overflowing molten iron, so as to timely carry out the bag collection operation, control the flow rate of the molten iron and timely rotate the ladle, realizing fast and safe operation. In addition, due to the height difference between the dimple groove and the dimple pit, the molten iron can be segmented by height, avoiding the connection of the molten iron in the dimple groove and the molten iron in the dimple pit. Even if the molten iron is connected, the connected part of the molten iron can be directly knocked or broken when the sand box is lifted, without affecting the subsequent separate cleaning operation.
[0011] Preferably, a plurality of the dimple grooves are connected around each of the dimple pits. When making the dimple, after pressing to form a dimple pit on the surface of the upper sand mold surface, hold the handle and rotate the iron sphere around the dimple pit to press and form a plurality of the dimple grooves communicated with the dimple pit around the dimple pit.
[0012] Preferably, the iron sphere is a hemispherical iron sphere, and a connecting plate is horizontally fixed at the top of the iron sphere. The bottom end of the handle vertically passes through the connecting plate and is fixedly connected with the iron sphere.
[0013] Further, the bottom end of the handle is threadedly connected with the iron sphere, and the upper end of the connecting plate is pressed by a nut.
[0014] Preferably, paint surfaces or structural surfaces for marking the position depth are respectively arranged on the surfaces of the iron sphere and the pressing rod, which is convenient for the operator to refer to and determine the respective depths of the dimple grooves and dimple pits.
[0015] Preferably, the iron sphere is a hollow iron sphere, which is light and convenient to use and can further reduce the operation intensity of workers.
[0016] Compared with the prior art, the utility model has the following advantages: The dimpling tooling of the utility model can realize the rapid shaping of dimpling grooves and dimpling pits, is convenient and efficient to operate, can work flexibly along with the production line, and has low cost investment. The anti-overflow riser nest composed of dimpling grooves and dimpling pits can reduce the usage amount of ordinary sand risers, and at the same time can reduce the height of the sand box, can save the usage amount of resin sand required for filling the sand box and surrounding the sand and fixing the sand riser, and reduce the man-hour. When an operator uses the dimpling tooling of the utility model for dimpling shaping, the shaping positions of the dimpling grooves and dimpling pits to be dimpled can be flexibly selected at the risers and / or vent holes near the upper sand mold surface, avoiding the sand box ribs, and trying to make multiple risers and / or vent holes share a dimpling pit, so as to reduce the number of mold surfaces, improve the cleaning efficiency of the overflow iron, reduce the safety hazards brought by cleaning the overflow iron, and at the same time save the operation man-hour and the subsequent coating brushing amount. The dimpling tooling of the utility model can effectively improve the efficiency of operations from front-end shaping production, gating process preparation to back-end casting unpacking and cleaning, reduce the cost of casting production, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 FIG. is an external view schematic diagram of the dimpling tooling of the anti-overflow riser nest in the embodiment;
[0018] Figure 2 FIG. is a front view of the dimpling tooling of the anti-overflow riser nest in the embodiment;
[0019] Figure 3 is Figure 2 sectional view A-A in
[0020] Figure 4 FIG. is an effect example diagram of the dimpling grooves and dimpling pits shaped on the sand mold surface;
[0021] Figure 5 is corresponding to Figure 4 front view;
[0022] The specific reference numerals in the figure are as follows:
[0023] 1 - iron sphere, 2 - pressure bar, 3 - handle, 4 - connecting plate, 5 - dimpling pit, 6 - dimpling groove, 7 - vent hole, 8 is the casting cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following further describes the utility model in detail with reference to the accompanying drawings and embodiments.
[0025] The dimpling tooling of the anti-overflow riser nest in the embodiment, as Figures 1 to 3As shown, it includes an iron sphere 1, a pressure bar 2 and a handle 3. The bottom of the iron sphere 1 is spherical. The pressure bar 2 is horizontally fixed on one side of the iron sphere 1 in the radial direction. The pressure bar 2 is located above the bottom spherical surface of the iron sphere 1. The handle 3 is vertically fixed on the top of the iron sphere 1. The pressure bar 2 is used to press on the surface of the upper sand mold to form a dimple groove connected to the riser and / or exhaust hole on the surface of the upper sand mold. The iron sphere 1 is used to press on the surface of the upper sand mold to form a dimple pit connected to the dimple groove.
[0026] In this embodiment, paint surfaces or structural surfaces for marking position depths are respectively provided on the surfaces of the iron sphere 1 and the pressure bar 2. A number of dimple grooves are connected around each dimple pit.
[0027] In this embodiment, the iron sphere 1 is a hemispherical hollow iron sphere 1. A connecting plate 4 is horizontally fixed at the top of the iron sphere 1. The bottom end of the handle 3 vertically passes through the connecting plate 4 and is threadedly connected to the iron sphere 1. The upper end of the connecting plate 4 is pressed by a nut (not shown in the figure).
[0028] After the resin sand molding of the sand box is completed and the surface of the upper mold sand mold is scraped flat, the operator can start the dimple molding operation. When making a dimple, after pressing a dimple pit on the surface of the upper sand mold, hold the handle 3 and rotate the iron sphere 1 around the dimple pit to press a number of dimple grooves connected to the dimple pit around the dimple pit. When performing the molding operations of the dimple grooves and the dimple pits, the operator can flexibly select the molding positions of the proposed dimple grooves and dimple pits near the riser and / or exhaust hole on the surface of the upper sand mold, avoid the sand box ribs, and try to make multiple risers and / or exhaust holes share a dimple pit. After the dimple grooves and dimple pits are molded on the surface of the sand mold, pull out the riser and / or exhaust hole process tooling (riser rod and / or exhaust hole pipe) of the sand mold; after the resin sand on the surface of the sand box is completely hardened, clean the loose sand on the surface of the sand mold; at the same time, apply coatings to all dimple grooves and dimple pits.
[0029] During the casting process of the casting, the molten iron overflowing from the riser and / or exhaust hole on the surface of the upper sand mold enters the dimple groove and flows into the dimple pit for centralized collection and use of the overflowing molten iron. At the same time, the operator can directly observe the molten iron overflow situation and the collection situation of the overflowing molten iron, so as to timely carry out the ladle receiving operation, control the flow rate of the molten iron and timely rotate the ladle, realizing a fast and safe operation. In addition, due to the height difference between the dimple groove and the dimple pit, the molten iron can be divided into high and low sections, avoiding the connection of the molten iron in the dimple groove and the molten iron in the dimple pit. Even if the molten iron connection occurs, the connection part of the molten iron can be directly knocked or broken when the sand box is lifted, without affecting the subsequent separate cleaning operation.
[0030] Figure 4 and Figure 5The figure shows an example of the effects of the indentation grooves and indentation pits formed on the surface of the sand mold. The resin sand is hidden in the figure. Figure 4 and Figure 5 In Figure 4 and Figure 5 , 5 is the indentation pit and 6 is the indentation groove. Figure 4 and Figure 5 Figure 4 and Figure 5 show two indentation pits 5, each indentation pit 5 is connected to three indentation grooves 6, each indentation groove 6 is connected to an exhaust hole 7, and each exhaust hole 7 is connected to the casting cavity 8.
Claims
1. A tool for pressing a riser socket to prevent overflow, characterized in that: It includes an iron sphere, a pressure rod and a handle. The bottom of the iron sphere is a spherical surface. The pressure rod is transversely fixed on one radial side of the iron sphere. The pressure rod is located above the bottom spherical surface of the iron sphere. The handle is vertically fixed on the top of the iron sphere. The pressure rod is used to press on the surface of the upper sand mold surface to form a dent groove connected to the riser and / or exhaust hole of the upper sand mold surface. The iron sphere is used to press on the surface of the upper sand mold surface to form a dent pit connected to the dent groove.
2. The anti-overflow riser socket pressing tool according to claim 1, characterized in that: Each of the dimple pits is connected to a plurality of dimple grooves. When dimple pressing, after a dimple pit is formed by pressing on the surface of the upper sand mold, the handle is held and the iron ball is rotated around the dimple pit to press around the dimple pit to form a plurality of dimple grooves connected to the dimple pit.
3. The anti-overflow riser socket pressing tool according to claim 1, characterized in that: The iron sphere is a hemispherical iron sphere, a connecting plate is horizontally fixed on the top of the iron sphere, and the bottom end of the handle vertically passes through the connecting plate and is fixedly connected to the iron sphere.
4. The anti-overflow riser socket pressing tool according to claim 3, characterized in that: The bottom end of the handle is threadedly connected to the iron sphere, and the upper end of the connecting plate is pressed by a nut.
5. The anti-overflow riser socket pressing tool according to claim 1, characterized in that: The surfaces of the iron sphere and the pressure rod are respectively provided with a painted surface or a structural surface for marking the position depth.
6. A dimple pressing tool for an anti-overflow riser socket according to any one of claims 1 to 5, characterized in that: The iron sphere is a hollow iron sphere.