Wax pattern recycling device for ductile iron castings

Abstract

The utility model relates to a recycling and reuse device for wax molds for spheroidal cast iron castings, comprising a four-sided pyramidal mold box, a rectangular shell is provided outside the mold box, and a flow channel is provided between the inner wall of the shell and the outer wall of the mold box; a rectangular diversion frame is fixed in the middle of the bottom surface of the mold box, and four corners of the diversion frame are fixed with inclined partitions, and the outer side edges of the partitions are fixed on the inner side walls at the four corners of the shell, and a plurality of water diversion holes are formed on the diversion frame between the partitions, and the lower end surface of the diversion frame, the lower end surface of the partition and the lower end surface of the shell are respectively fixed on the bottom plate. The recycling and reuse device adds a shell on the outer side of the mold box, which can strengthen the strength of the mold box and reduce the uneven protrusions or concave depressions on the inner wall of the mold box; when there are protrusions or concave depressions on the inner wall of the mold box, the gap between the shell and the mold box can be used as a heating flow channel, which is convenient for the wax block surface to soften and demold; the inlet and outlet water pipe structure connected to the heating flow channel constitutes upper and lower handles, which is convenient for manually holding the mold box to dump the wax block.

Description

Technical field:

[0001] The utility model relates to the technical field of a wax mold recovery device, and more specifically to a recovery and reuse device for wax molds used for spheroidal milled cast iron castings. Background technology:

[0002] At present, the lost wax process is a main casting process. The lost wax process refers to first using wax to make the shape of the casting, which is called a wax mold. After the wax mold is made, a sand mold of the casting is made based on the wax mold using mold shell sand. Then, the wax mold in the sand mold is melted and flows out of the sand mold by heating. Finally, a casting liquid of a metal material such as molten iron can be poured into the sand mold. After the sand mold is broken, the casting can be obtained. The casting of spheroidal cast iron castings also adopts the above-mentioned lost wax casting process; and the melted wax liquid in the sand mold can be recycled and reused, and the wax mold can be remade. The current recycling device is a mold box with a four-sided pyramid structure. After the wax liquid is filled into the mold box, the wax liquid is cooled and solidified into a block, and the wax block can be demolded and reused;

[0003] At present, the wax blocks are mainly removed by pouring, but the mold box will have the problem of bumps during long-term use. The bumps will cause the inner wall of the mold box to be uneven, affecting the demolding of the wax block. Some mold boxes repair the flatness of the inner wall of the mold box by knocking, but there will still be some small bumps, so later warm water was poured on the outer wall of the mold box to soften the outer layer of the wax block, which made it easier to pour it out. However, pouring warm water directly on the outer wall of the mold box will cause water to be everywhere, and the outer wall of the mold box will be smoother after watering, which is not convenient for employees to hold and pour wax blocks. Utility model content:

[0004] The purpose of the utility model is to address the deficiencies of the prior art and provide a recycling device for wax molds used for ductile cast iron castings. The recycling device is a mold for casting wax blocks, which can facilitate workers to demold the wax blocks and prevent softening water from flowing around the bottom of the workshop.

[0005] A wax mold recycling device for ductile iron castings comprises a quadrangular pyramidal mold box, a rectangular shell is provided outside the mold box, a rectangular annular upper sealing edge is fixed on the upper end of the shell, the upper sealing edge is inserted into the upper end of the mold box and fixed on the outer wall of the mold box, and a flow channel is provided between the inner wall of the shell and the outer wall of the mold box;

[0006] A rectangular diversion frame is fixed in the middle of the bottom surface of the mold box, and inclined partitions are fixed at the four corners of the diversion frame. The outer sides of the partitions are fixed to the inner side walls at the four corners of the shell. A plurality of water diversion holes are formed on the diversion frame between the partitions. The lower end surface of the diversion frame, the lower end surface of the partition and the lower end surface of the shell are respectively fixed to the bottom plate;

[0007] A water inlet pipe is plugged and fixed on the outer wall of one side of the lower part of the shell, the inner end of the water inlet pipe is plugged and fixed on the diverter frame and is connected to the inner cavity of the diverter frame, and the outer end of the water inlet pipe extends out of the shell and is inserted into an L-shaped lower handle; a plurality of drain pipes connected to the flow channel a are fixed on the outer wall of the lower part of the shell, and upper handles are fixedly connected between the drain pipes.

[0008] Preferably, one end of the lower handle is formed with a connecting sleeve, the connecting sleeve is fixed on the water inlet pipe, the water inlet pipe extends out of the connecting sleeve, and the other end of the lower handle is fixed on the outer wall of the shell.

[0009] Preferably, the upper handle is a circular cross bar, and the cross bar is located directly above the lower handle.

[0010] Preferably, the diameter of the water inlet pipe is smaller than the distance from the bottom surface of the mold box to the bottom plate, and the side edge of the bottom plate is flush with the outer side wall of the shell.

[0011] Preferably, the water diversion holes on the diversion frame are distributed on the upper side of the water inlet pipe.

[0012] Preferably, the upper end surface of the partition is fixed on the bottom surface of the mold box.

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

[0014] The recycling and reuse device improves the mold box by adding an outer shell to the outer side of the mold box, which can enhance the strength of the mold box and reduce the uneven protrusions or depressions on the inner wall of the mold box. When there are protrusions or depressions on the inner wall of the mold box, the gap between the outer shell and the mold box can be used as a heating flow channel, and warm water can pass through the heating flow channel to the mold box, which is convenient for softening the surface of the wax block and demolding. At the same time, the inlet and outlet water pipe structures connected to the heating flow channel form upper and lower handles, which are convenient for manually holding the mold box to dump the wax block. Description of the drawings:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of a half-section of the utility model;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model without a bottom plate.

[0018] In the figure: 1, mold box; 2, shell; 3, upper edge sealing; 4, diversion frame; 41, water diversion hole; 5, partition; 6, bottom plate; 7, water inlet pipe; 8, lower handle; 9, drain pipe; 10, upper handle. Specific implementation method:

[0019] Example: See Figures 1 to 3As shown, a wax mold recycling and reuse device for ductile iron castings comprises a quadrangular pyramidal mold box 1, a rectangular shell 2 is provided outside the mold box 1, a rectangular annular upper edge seal 3 is fixed to the upper end of the shell 2, the upper edge seal 3 is inserted into the upper end of the mold box 1 and fixed to the outer side wall of the mold box 1, so as to realize a sealed connection between the top of the mold box 1 and the top of the shell 2; a flow channel a is provided between the inner wall of the shell 2 and the outer wall of the mold box 1;

[0020] A rectangular diverter frame 4 is fixed to the middle of the bottom surface of the mold box 1, and inclined partitions 5 are fixed to the four corners of the diverter frame 4. The outer sides of the partitions 5 are fixed to the inner side walls at the four corners of the shell 2. A plurality of water diverter holes 41 are formed on the diverter frame 4 between the partitions 5. The lower end surface of the diverter frame 4, the lower end surface of the partition 5 and the lower end surface of the shell 2 are respectively fixed to the bottom plate 6.

[0021] A water inlet pipe 7 is inserted and fixed on the outer wall of one side of the lower part of the outer shell 2, the inner end of the water inlet pipe 7 is inserted and fixed on the diverter frame 4 and is connected with the inner cavity of the diverter frame 4, and the outer end of the water inlet pipe 7 extends out of the outer shell 2 and is inserted with an L-shaped lower handle 8; a plurality of drain pipes 9 connected with the flow channel a are fixed on the outer wall of the lower part of the outer shell 2, and upper handles 10 are fixedly connected between the drain pipes 9.

[0022] The lower handle 8 is formed by bending a strip-shaped plate, and a connecting sleeve is formed at one end of the lower handle 8. The connecting sleeve is fixed on the water inlet pipe 7, and the water inlet pipe 7 extends out of the connecting sleeve. The other end of the lower handle 8 is fixed on the outer wall of the shell 2 and can be fixed by welding.

[0023] The upper handle 10 is a circular crossbar, which is located directly above the lower handle 8 . The lower handle 8 and the upper handle 10 are on the same side of the housing 2 .

[0024] The diameter of the water inlet pipe 7 is smaller than the distance from the bottom surface of the mold box 1 to the bottom plate 6, and the side of the bottom plate 6 is flush with the outer side wall of the shell 2, so that the water inlet pipe 7 will not touch the bottom surface. When the mold box 1 is upright, the lower handle 8 is held with room to avoid contact with the ground.

[0025] The water diversion holes 41 on the diversion frame 4 are distributed on the upper side of the water inlet pipe 7. When the mold box 1 is inverted, the water inlet pipe 7 will become on the upper side of the water diversion holes 41. The warm water entering the diversion frame 4 through the water inlet pipe 7 can be quickly output from the water diversion holes 41 into the flow channel a between the outer shell 2 and the mold box 1.

[0026] The upper end surface of the partition plate 5 is fixed on the bottom surface of the mold box 1 .

[0027] Working principle: The utility model is a device for recycling wax mold materials in the precision casting process. The main structure is a reused mold for casting wax blocks. A rectangular shell 2 is provided on the mold box 1. The shell 2 can protect the mold box 1 and reduce the collision of the mold box 1.

[0028] At the same time, a flow channel a is provided between the mold box 1 and the shell 2. When the wax liquid solidifies and cannot be demoulded, the mold box 1 can be inverted, and warm water can be injected into the water inlet pipe 7. The warm water flows through the flow channel a between the mold box 1 and the shell 2 through the diversion frame 4 and contacts the outer side walls of the mold box 1 on all sides to soften the surface of the wax block. The warm water is finally discharged through the drain pipe 9. The drain pipe 9 has a guiding function, so that the warm water does not fall to the ground and flow around.

[0029] At the same time, the drain pipe 9 cooperates with the cross bar to be used as a gripping handle on the upper side of the mold box 1 , and the water inlet pipe 7 cooperates with the lower handle 8 to be used as a gripping handle on the lower side of the mold box 1 .

[0030] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A device for recycling wax molds for spheroidal cast iron castings, comprising a quadrangular pyramid-shaped mold box (1), characterized in that: The mold box (1) is provided with a rectangular outer shell (2) on its outer surface, a rectangular annular upper sealing edge (3) is fixed to the upper end of the outer shell (2), the upper sealing edge (3) is inserted into the upper end of the mold box (1) and fixed to the outer wall of the mold box (1), and a flow channel (a) is provided between the inner wall of the outer shell (2) and the outer wall of the mold box (1); A rectangular flow dividing frame (4) is fixed in the middle of the bottom surface of the mold box (1), and inclined partitions (5) are fixed at the four corners of the flow dividing frame (4). The outer sides of the partitions (5) are fixed to the inner side walls at the four corners of the outer shell (2). A plurality of water diversion holes (41) are formed on the flow dividing frame (4) between the partitions (5), and the lower end surface of the flow dividing frame (4), the lower end surface of the partition (5) and the lower end surface of the outer shell (2) are respectively fixed to the bottom plate (6); A water inlet pipe (7) is inserted and fixed on the outer wall of one side of the lower part of the shell (2); the inner end of the water inlet pipe (7) is inserted and fixed on the diversion frame (4) and is connected to the inner cavity of the diversion frame (4); the outer end of the water inlet pipe (7) extends out of the shell (2) and is inserted with an L-shaped lower handle (8); a plurality of drainage pipes (9) connected to the flow channel (a) are fixed on the outer wall of the lower part of the shell (2); upper handles (10) are fixedly connected between the drainage pipes (9).

2. The device for recycling wax patterns for spheroidal cast iron castings according to claim 1, characterized in that: One end of the lower handle (8) is formed with a connecting sleeve, which is fixed on the water inlet pipe (7). The water inlet pipe (7) extends out of the connecting sleeve, and the other end of the lower handle (8) is fixed on the outer wall of the shell (2).

3. The device for recycling wax patterns for spheroidal cast iron castings according to claim 2, characterized in that: The upper handle (10) is a circular crossbar, which is located directly above the lower handle (8).

4. The device for recycling wax patterns for spheroidal cast iron castings according to claim 1, characterized in that: The diameter of the water inlet pipe (7) is smaller than the distance from the bottom surface of the mold box (1) to the bottom plate (6), and the side edge of the bottom plate (6) is flush with the outer side wall of the shell (2).

5. The device for recycling wax patterns for spheroidal cast iron castings according to claim 1, characterized in that: The water diversion holes (41) on the diversion frame (4) are distributed on the upper side of the water inlet pipe (7).

6. The device for recycling wax patterns for ductile iron castings according to claim 1, characterized in that: The upper end surface of the partition (5) is fixed on the bottom surface of the mold box (1).

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