A cooling water pipe casting device for lost foam

Abstract

The utility model discloses a cooling water pipe casting device for lost foam, which belongs to the technical field of lost foam casting. The utility model comprises a lower box body, a groove is opened inside the lower box body, the groove is filled with dry sand, a lost mold is placed in the middle of the lower box body, the dry sand is wrapped around the periphery of the lost mold, an upper box body is installed on the upper end of the lower box body, and air guide pipes are fixedly arranged on both side walls of the lower box body, one of the air guide pipes is connected to an air pump, and a connecting component is installed at one end of the air guide pipe located inside the lower box body. The utility model can change the structure and shape of the special-shaped pipe according to actual customer needs, so as to cool down a specific position according to the needs of the product structure, so as to achieve fixed-point rapid cooling of the product, and the cooperation of the filter plate and the filter device can effectively prevent the dry sand from clogging the vacuum pipe and the exhaust equipment, thereby causing the equipment to fail to operate normally.

Description

Technical Field

[0001] The utility model relates to the technical field of lost foam casting, in particular to a cooling water pipe casting device for lost foam. Background Art

[0002] Lost foam casting, also known as full-mold casting, is a method of making castings using foam plastic patterns instead of traditional wooden patterns. The principle of this method is that the foam plastic pattern will quickly vaporize and disappear under the action of high-temperature molten metal, and the molten metal will fill the space left by it to form a casting of the desired shape. The biggest advantage of this technology is that it can greatly reduce the processing allowance of castings, improve material utilization, and reduce production costs.

[0003] During the use of the existing device, when pouring the casting, the pouring liquid is too hot and easily damages the internal special-shaped tube, resulting in the need for secondary processing of the casting when the special-shaped tube is damaged after the pouring is completed, thereby reducing the yield rate of the casting. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a cooling water pipe casting device for lost foam, which overcomes the deficiencies in the prior art and aims to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling water pipe casting device for lost foam, comprising a lower box body, a groove is provided inside the lower box body, the groove is filled with dry sand, a lost mold is placed in the middle of the lower box body, the lost mold comprises an upper mold and a lower mold, a special-shaped tube is provided between the upper mold and the lower mold, a groove used to match the special-shaped tube is provided between the upper mold and the lower mold, the dry sand is wrapped around the periphery of the lost mold, and air guide tubes are fixedly provided on both side walls of the lower box body, and a connecting assembly is installed at one end of the air guide tube located inside the lower box body, and the connecting assembly comprises a connecting tube slidably connected to the air guide tube, the connecting tube is used in conjunction with the special-shaped tube, and a spring 2 is provided at one end of the connecting tube away from the special-shaped tube, a limiting ring used in conjunction with the spring 2 is fixedly provided on the outer wall of the air guide tube, and a sealing ring used in conjunction with the special-shaped tube and the air guide tube is glued and connected inside the connecting tube:

[0006] This device can change the structure and shape of the special-shaped tube according to actual customer needs, so as to cool down the specific position according to the needs of the product structure, so as to achieve fixed-point rapid cooling of the product. Before casting, the special-shaped tube and the disappearing mold are buried in the dry sand of the lower box, and the special-shaped tube and the connecting device are installed together to connect the air guide tube with the special-shaped tube. During the casting process, the air pump is turned on and air is blown into the air guide tube through the air pump, so that when the casting liquid contacts the special-shaped tube, the casting liquid can effectively prevent the special-shaped tube from melting, thereby ensuring that the special-shaped tube will not be deformed.

[0007] As a preferred technical solution of the utility model, an upper box body is installed on the upper end of the lower box body, a gate is provided on the top of the upper box body, and the gate extends to the interior of the lower box body, a riser is provided on the top of the upper box body, and the riser extends to the interior of the lower box body, a filter plate is provided inside the lower box body, and a vacuum pipe is connected to the outer wall of the lower box body, one end of the vacuum pipe is connected to the compression pump, and a filter device is installed on the inner wall of the vacuum pipe, and the filter device includes a tube body, and an air inlet ring and an air outlet ring are respectively installed on both sides of the tube body, and filter cotton is provided inside the tube body:

[0008] A gate and a riser are respectively provided on the top of the upper box. The gate is used to introduce the molten metal liquid into the cavity. The riser can gather slag and gas to improve the quality of the casting. The gate and the riser extend to the interior of the lower box, so as to better guide the molten metal to the disappearing mold. At the same time, a filter plate is installed inside the lower box. The function of the filter plate is to preliminarily filter the sand and gravel to prevent the blockage of the vacuum pipe. The vacuum pipe is connected to the outer wall of the lower box. By arranging the vacuum pipe on the side of the box, compared with the traditional bottom suction, the side suction type can adapt to more complex casting molds, because the negative pressure field direction of the side suction type is horizontal on the side, while the bottom suction type is from top to bottom, there is a possibility of gradient attenuation, and the vacuum degree in the upper part is lower. The side-suction type of exhaust is relatively more uniform, which makes the casting yield rate higher. At the same time, a filtering device is installed inside the vacuum tube, and the filtering device includes a tube body, an air inlet ring, an air outlet ring and filter cotton. Through the cooperation of the tube body, the air inlet ring, the air outlet ring and the filter cotton, fine sand and gravel are filtered in the tube body to prevent the sand and gravel from affecting the vacuum equipment, thereby causing the equipment to be unable to perform vacuum exhaust in the box and reducing production efficiency. Through the cooperation of the filter plate and the filtering device, it can effectively prevent the sand and gravel from affecting the exhaust equipment and reducing the production efficiency of the enterprise. Compared with the traditional bottom-suction type, the side-suction type can adapt to more complex casting molds, which makes the casting yield rate higher and prevents the casting from being affected by uneven exhaust.

[0009] As a preferred technical solution of the utility model, a vibration device is provided at the bottom end of the lower box body, and the vibration device includes an upper support plate and a lower support plate, a plurality of springs are fixedly connected between the upper support plate and the lower support plate, and a vibration motor is fixedly connected to the bottom of the upper support plate:

[0010] A plurality of springs are fixedly connected between the upper support plate and the lower support plate, a vibration motor is fixedly connected to the bottom of the upper support, a lower box is arranged on the top of the upper support plate, and the spring provides a buffer for the vibration of the upper support plate and the lower support plate to prevent the impact on the equipment during the vibration process. By starting the vibration motor to vibrate, the dry sand in the lower box is vibrated evenly to prevent shrinkage holes in the casting caused by uneven dry sand and the generation of air holes that affect the quality of the casting.

[0011] The beneficial effects of the utility model are as follows: the device can change the structure and shape of the special-shaped pipe according to actual customer needs, so as to cool down the specific position according to the needs of the product structure, so as to achieve fixed-point rapid cooling of the product. The cooperation between the filter plate and the filter device can effectively prevent the dry sand from clogging the vacuum pipe and the air extraction equipment, thereby causing the equipment to be unable to operate normally. By starting the vibration motor to vibrate, the dry sand in the lower box is vibrated evenly, preventing shrinkage holes in the casting caused by uneven dry sand, and the generation of pores that affect the quality of the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0014] Figure 3 It is a partial structural schematic diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of the installation of the special-shaped pipe of the utility model.

[0016] In the figure: 1. lower box body; 2. upper box body; 3. gate; 4. riser; 5. vacuum tube; 601. tube body; 602. filter cotton; 603. air inlet ring; 604. air outlet ring; 7. dry sand; 8. lost mold; 9. filter plate; 1001. upper support plate; 1002. spring 1; 1003. vibration motor; 1004. lower support plate; 10. special-shaped tube; 11. air guide tube; 12. spring 2; 13. connecting tube. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Embodiment 1

[0019] See also Figure 2 and Figure 4 A cooling water pipe casting device for lost foam, comprising a lower box body 1, a groove is provided inside the lower box body 1, the groove is filled with dry sand 7, a lost mold 8 is placed in the middle of the lower box body 1, the lost mold 8 comprises an upper mold and a lower mold, a special-shaped tube 10 is provided between the upper mold and the lower mold, a groove for matching the special-shaped tube 10 is provided between the upper mold and the lower mold, the dry sand 7 is wrapped around the periphery of the lost mold 8, an upper box body 2 is installed on the upper end of the lower box body 1, and two side walls of the lower box body 1 are respectively fixedly provided with Air guide tube 11, one of which is connected to the air pump, one end of the air guide tube 11 located inside the lower box 1 is installed with a connecting assembly, the connecting assembly includes a connecting tube 13 slidably connected to the air guide tube 11, the connecting tube 13 is used in conjunction with the special-shaped tube 10, a spring 2 12 is provided at one end of the connecting tube 13 away from the special-shaped tube 10, a limiting ring used in conjunction with the spring 2 12 is fixedly provided on the outer wall of the air guide tube 11, and a sealing ring used in conjunction with the special-shaped tube 10 and the air guide tube 11 is pasted inside the connecting tube 13:

[0020] The device can change the structure and shape of the special-shaped tube 10 according to actual customer needs, so as to cool down a specific position according to the needs of the product structure, so as to achieve fixed-point rapid cooling of the product. Before casting, the special-shaped tube 10 and the disappearing mold 8 are buried in the dry sand 7 of the lower box 1, and the special-shaped tube 10 is installed together with the connecting device, so that the air guide pipe 11 is connected to the special-shaped tube 10. During the casting process, the air pump is turned on and air is blown into the air guide pipe 11 through the air pump, so that when the casting liquid contacts the special-shaped tube 10, the casting liquid can effectively prevent the special-shaped tube 10 from melting, thereby ensuring that the special-shaped tube 10 will not be deformed.

[0021] See also Figure 2 and Figure 3A gate 3 is provided at the top of the upper box body 2, and the gate 3 extends to the interior of the lower box body 1. A riser 4 is provided at the top of the upper box body 2, and the riser 4 extends to the interior of the lower box body 1. A vacuum tube 5 is connected to the outer wall of the lower box body 1, and one end of the vacuum tube 5 is connected to the compression pump. A filter plate 9 used in conjunction with the vacuum tube 5 is provided inside the lower box body 1. A filtering device is installed on the inner wall of the vacuum tube 5. The filtering device includes a tube body 601, and an air inlet ring 603 and an air outlet ring 604 are respectively installed on both sides of the tube body 601. A filter cotton 602 is provided inside the tube body 601:

[0022] A gate 3 and a riser 4 are respectively provided on the top of the upper box body 2. The gate 3 is used to introduce the molten metal liquid into the cavity. The riser 4 can gather slag and gas to improve the quality of the casting. The gate 3 and the riser 4 extend to the interior of the lower box body 1, so as to better guide the metal liquid to the lost mold 8. At the same time, a filter plate 9 is also installed inside the lower box body 1. The function of the filter plate 9 is to preliminarily filter the sand and gravel to prevent the blockage of the vacuum tube 5. The vacuum tube 5 is connected to the outer wall of the lower box body 1. By arranging the vacuum tube 5 on the side of the box body, compared with the traditional bottom suction type, the side suction type can adapt to more complex casting molds, because the negative pressure field direction of the side suction type is horizontal on the side, while the bottom suction type is from top to bottom, there is a possibility of a gradient attenuation, the vacuum degree at the top is lower, and the side suction type It is relatively more uniform, so that the casting yield rate is higher. At the same time, a filtering device is installed inside the vacuum tube 5, and the filtering device includes a tube body 601, an air inlet ring 603, an air outlet ring 604 and a filter cotton 602. Through the cooperation of the tube body 601, the air inlet ring 603, the air outlet ring 604 and the filter cotton 602, fine sand and gravel are filtered in the tube body 601 to prevent the sand and gravel from affecting the vacuum equipment, thereby causing the equipment to be unable to vacuum the box body, reducing production efficiency. Through the cooperation of the filter plate 9 and the filtering device, it is possible to effectively prevent the sand and gravel from affecting the exhaust equipment and reducing the production efficiency of the enterprise. Compared with the traditional bottom exhaust, the side exhaust can adapt to more complex casting molds, so that the casting yield rate is higher and the casting is prevented from being affected by uneven exhaust.

[0023] See also Figure 1 In this embodiment, a vibration device is provided at the bottom end of the lower box body 1, and the vibration device includes an upper support plate 1001 and a lower support plate 1004, a plurality of springs 1002 are fixedly connected between the upper support plate 1001 and the lower support plate 1004, and a vibration motor 1003 is fixedly connected to the bottom of the upper support plate 1001.

[0024] A plurality of springs 1002 are fixedly connected between the upper support plate 1001 and the lower support plate 1004, a vibration motor 1003 is fixedly connected to the bottom of the upper support plate 1001, and a lower box body 1 is arranged on the top of the upper support plate 1001. The springs 1002 provide buffering for the upper support plate 1001 and the lower support plate 1004 when they vibrate to prevent impact on the equipment during the vibration process. By starting the vibration motor 1003 to vibrate, the dry sand 7 in the lower box body 1 is vibrated evenly to prevent shrinkage holes in the casting caused by uneven dry sand 7, and the generation of air holes that affect the quality of the casting.

[0025] Working principle: This device can change the structure and shape of the special-shaped tube 10 according to actual customer needs, so as to cool down the specific position according to the needs of the product structure, so as to achieve fixed-point rapid cooling of the product. Before casting, the special-shaped tube 10 and the lost mold 8 are buried in the dry sand 7 of the lower box 1, and the special-shaped tube 10 is installed together with the connecting device, so that the air guide pipe 11 is connected with the special-shaped tube 10. During the casting process, the air pump is turned on, and air is blown into the air guide pipe 11 through the air pump, so that when the casting liquid contacts the special-shaped tube 10, the casting liquid can effectively prevent the special-shaped tube 10 from melting, thereby ensuring that the special-shaped tube 10 will not be deformed. The molten metal is guided to be poured into the lost mold 8 through the gate 3, and the exhaust equipment is started to exhaust the air in the box through the vacuum pipe 5. Because casting and exhaust are carried out simultaneously, the box The body will not be unable to evacuate due to the gate 3. The molten metal will melt the disappearing mold 8 and shape the mold through the dry sand 7 to obtain a replicated casting. Through the cooperation of the filter plate 9 and the filtering device, the dry sand 7 can be effectively prevented from clogging the vacuum tube 5 and the exhaust equipment, thereby causing the equipment to fail to operate normally. Compared with the traditional bottom exhaust, the side exhaust can adapt to more complex casting molds, so that the casting yield rate is higher and the casting is prevented from being affected by uneven exhaust. By starting the vibration motor 1003 to vibrate, the dry sand 7 in the lower box 1 is vibrated evenly to prevent shrinkage holes in the casting caused by uneven dry sand 7 and the generation of pores that affect the quality of the casting. The spring 1002 provides a buffer for the vibration of the upper support plate 1001 and the lower support plate 1004 to prevent impact on the equipment during vibration.

[0026] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cooling water pipe casting device for lost foam, comprising a lower box (1), characterized in that: The lower box (1) is provided with a groove inside, and the groove is filled with dry sand (7). A vanishing mold (8) is placed in the middle of the lower box (1), and the dry sand (7) is wrapped around the periphery of the vanishing mold (8). The upper end of the lower box (1) is installed with an upper box (2), and the two side walls of the lower box (1) are respectively fixedly provided with air guide pipes (11), one of which is connected to an air pump, and a connection component is installed at one end of the air guide pipe (11) located inside the lower box (1): The vanishing mold (8) comprises an upper mold and a lower mold, a special-shaped tube (10) is arranged between the upper mold and the lower mold, and a groove for matching the special-shaped tube (10) is provided between the upper mold and the lower mold.

2. The cooling water pipe casting device for lost foam according to claim 1, characterized in that: A gate (3) is provided on the top of the upper box body (2), and the gate (3) extends to the interior of the lower box body (1).

3. The cooling water pipe casting device for lost foam according to claim 2, characterized in that: A riser (4) is provided on the top of the upper box body (2), and the riser (4) extends to the interior of the lower box body (1).

4. The cooling water pipe casting device for lost foam according to claim 1, characterized in that: The outer wall of the lower box body (1) is connected to a vacuum pipe (5), and one end of the vacuum pipe (5) is connected to a compression pump.

5. The cooling water pipe casting device for lost foam according to claim 1, characterized in that: The lower box (1) is provided with a filter plate (9) for use with the vacuum tube (5).

6. The cooling water pipe casting device for lost foam according to claim 5, characterized in that: A filtering device is installed on the inner wall of the vacuum tube (5), and the filtering device comprises a tube body (601). An air inlet ring (603) and an air outlet ring (604) are installed on both sides of the tube body (601), and filter cotton (602) is arranged inside the tube body (601).

7. The cooling water pipe casting device for lost foam according to claim 1, characterized in that: A vibration device is provided at the bottom end of the lower box body (1), and the vibration device comprises an upper support plate (1001) and a lower support plate (1004), a plurality of springs (1002) are fixedly connected between the upper support plate (1001) and the lower support plate (1004), and a vibration motor (1003) is fixedly connected to the bottom of the upper support plate (1001).

8. The cooling water pipe casting device for lost foam according to claim 1, characterized in that: The connection assembly comprises a connection tube (13) slidably connected to the air guide tube (11); the connection tube (13) is used in conjunction with the special-shaped tube (10); a second spring (12) is arranged at one end of the connection tube (13) away from the special-shaped tube (10); a limiting ring used in conjunction with the second spring (12) is fixedly arranged on the outer wall of the air guide tube (11); and a sealing ring used in conjunction with the special-shaped tube (10) and the air guide tube (11) is pasted inside the connection tube (13).

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