A machining device and machining method for a cast pipe sand core exhaust passage

Abstract

The application discloses a processing device and a processing method for a foundry pipe sand core exhaust passage, and belongs to the technical field of foundry processing. The device comprises a copper pipe, a file, a punching platform, a taper needle, a core box mold and a file hole mechanism. The punching platform is used for limiting and supporting the copper pipe. The file hole mechanism is used for clamping the file and driving the file to file a sunken groove on the copper pipe. The taper needle is used for continuing to drill an exhaust hole at the sunken groove of the copper pipe. The copper pipe is used for being laid in the core box mold. The core box mold is used for being cast into a pipe core sand. The core box mold comprises a sand shooting nozzle and a core head. The sand shooting nozzle fills the coated sand into the core box mold and makes the coated sand cover the copper pipe. The end face of the copper pipe is exposed from the core head so that the pipe sand core can exhaust during baking and pouring. The coated sand pipe sand core can exhaust by using simple and practical tools such as the copper pipe, the file, the taper needle and the core box mold and by forming a pipe exhaust passage through a reasonable method, so that the influence of gas on castings is reduced.

Description

Technical Field

[0001] This application relates to the field of casting processing technology, and in particular, to a processing apparatus for a sand core venting channel in a casting pipeline. Furthermore, this application also relates to a processing method using the aforementioned processing apparatus for a sand core venting channel in a casting pipeline. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this application. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this application.

[0003] The intake casing of a certain aero-engine is an aluminum-magnesium alloy casting, a cylindrical cavity structure with a support plate. There is a ring-shaped pipe within the casting. The pipe core was made using traditional coated sand combined with annealed iron wire. Due to the high gas generation rate of the coated sand, the pipe core generated gas during pouring, and the lack of an exhaust channel led to porosity defects in the casting, resulting in its scrap. We discovered that the specific cause was that during pouring, the coated sand pipe core, affected by the high temperature of the molten metal, generated a large amount of gas. Because the sand core lacked an exhaust channel, the generated gas could not be discharged in time, entering the casting and causing porosity defects, leading to a large number of scrapped castings. Therefore, when making pipe cores with coated sand, it is necessary to design a reasonable exhaust channel within the pipe core to improve the exhaust efficiency and prevent gas from entering the casting and causing porosity defects.

[0004] To address the aforementioned issues, we provide a processing apparatus and method for processing sand core venting channels in casting pipelines.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, this application provides a processing device for the venting channel of the sand core of the casting pipeline. It can use simple and practical tools such as copper pipes, files, conical needles and core box molds to form the pipeline venting channel through reasonable methods to achieve venting of the coated sand pipeline sand core, so as to reduce the impact of gas on the casting.

[0007] This application also relates to a processing method for a processing apparatus that utilizes the aforementioned casting pipeline sand core exhaust channel.

[0008] According to one aspect of this application, a processing apparatus for an exhaust channel in a casting pipe sand core is provided, used to process an exhaust channel on the pipe sand core while casting the pipe sand core, characterized in that the processing apparatus for the exhaust channel in the casting pipe sand core includes a copper tube, a file, a drilling platform, a conical needle, a core box mold, and a filing mechanism:

[0009] The drilling platform is used to limit and support the copper tube. The filing mechanism is used to clamp the file and drive the file to file a recessed groove on the copper tube. The conical needle is used to continue drilling vent holes at the recessed groove of the copper tube. The copper tube is used to lay in the core box mold. The core box mold is used to cast and form the pipeline core sand. The core box mold includes a sand injection nozzle and a core head. The sand injection nozzle pours the coated sand into the core box mold and makes the coated sand cover the copper tube. The end face of the copper tube is exposed from the core head so that the pipeline sand core can be vented during baking and casting.

[0010] In some embodiments of this application, a plurality of limiting protrusions are provided at intervals along the length of the drilling platform, and a strip groove is provided along the length of the drilling platform and the strip groove passes through each limiting protrusion. The strip groove is used to limit the copper tube.

[0011] In some embodiments of this application, the filing mechanism includes a mounting frame, a rotating shaft, a connecting member, a locking member, and a linear motor. A first support plate and a second support plate are respectively provided on opposite sides of the mounting frame. Bearings are provided on the opposite sidewalls of the first and second support plates. One end of the rotating shaft is connected to the bearing, and the other end of the rotating shaft is connected to the connecting member. The connecting members on both sides are used to limit and clamp the two ends of the file. The locking member is used to engage with a pre-set locking screw hole on the sidewall of the connecting member to lock and fix the file to the connecting member. The linear motor is connected to the mounting frame and is used to drive the mounting frame to perform reciprocating linear motion.

[0012] In some embodiments of this application, the first end of the connector is provided with a connecting hole, and a plurality of limiting slots are provided in a circular array on the side wall of the connecting hole. The connecting holes of the connectors on both sides are used to limit the two ends of the file, and the locking screw hole is provided on the side wall of the connecting hole.

[0013] In some embodiments of this application, the filing mechanism further includes a limiting member. Limiting screw holes are provided on both sides of the mounting bracket. The limiting screw holes are used to set the limiting member. The limiting member is used to pass through the limiting screw holes and engage with the locking member to limit the rotation of the locking member, the connecting member and the rotating shaft.

[0014] In some embodiments of this application, the locking member includes a hexagonal head and a stud, the hexagonal head being disposed on the top of the stud, and the limiting member includes a limiting cylinder and a handle, the handle being disposed on the top of the limiting cylinder, the outer wall of the limiting cylinder being provided with external threads, and the inner hole of the limiting cylinder being hexagonal to cooperate with the hexagonal head.

[0015] In some embodiments of this application, the filing mechanism further includes a limiting plate, a slider is provided at the bottom of the first support plate, a groove is provided on the limiting plate, the slider is slidably disposed in the groove, a linear motor is connected to the second support plate, and the linear motor is used to drive the second support plate and the first support plate to reciprocate along the groove.

[0016] In some embodiments of this application, the filing mechanism further includes a collection box and an air extraction pipe. The collection box is used to collect debris falling from the copper pipe. An air extraction hole is provided on the side wall of the collection box. The air extraction hole is used to connect to the first end of the air extraction pipe. The second end of the air extraction pipe is used to connect to an external air pump. Protective filters are provided on both the air extraction hole and the air extraction pipe.

[0017] In some embodiments of this application, a pair of auxiliary feeding plates are provided above the collection box. The auxiliary feeding plates on both sides are supported by support frames and are hinged to the support frames. The auxiliary feeding plates on both sides are inclined downward toward the center line of the collection box.

[0018] According to another aspect of this application, a method for processing a sand core venting channel for a casting pipeline is also provided, which employs the aforementioned processing apparatus for a sand core venting channel for a casting pipeline, and includes the aforementioned steps:

[0019] S100. Lay the copper pipe on the drilling platform and limit the copper pipe through the drilling platform;

[0020] S200. Use a file to file a recessed groove into the copper tube;

[0021] S300. Use a cone drill to create an air vent in the recessed groove of the copper tube.

[0022] S400. The copper tube with the vent holes punched is laid out in the core box mold according to the shape, with the end face of the copper tube exposed from the core head. A layer of white wax is coated on the surface of each vent hole to prevent the coating sand from entering the copper tube from the vent hole and blocking the venting channel.

[0023] S500. Close the core box mold and pour coated sand into it through the sand injection nozzle. The copper tube must be covered with coated sand. After filling with coated sand, put the core box mold into the oven for heating and curing. Curing temperature: 350℃~400℃, curing time: 28~32min.

[0024] S600. After the sand core has solidified, remove the core box mold from the oven and let it cool. Then open the mold, remove the pipeline sand core, and check the surface quality of the pipeline sand core.

[0025] This application has the following beneficial effects:

[0026] The processing device for the venting channel of the casting pipeline sand core in this application uses a drilling platform to support and limit the copper tube. Then, a filing mechanism drives a file to create a recessed groove on the copper tube. A conical needle is then used to drill venting holes in the recessed groove. The recessed groove thins the wall at the drilled hole, preventing the conical needle from puncturing the copper tube and causing excessively thick burrs that block the venting channel. The copper tube with venting holes is then laid in a core mold. Coated sand is injected into the core mold through a sand injection nozzle, covering the copper tube. The end face of the copper tube protrudes from the core head, allowing venting during the baking and casting process. The copper tube serves as both the venting channel and the core skeleton. This application effectively solves the venting problem during the casting of coated sand pipeline sand cores, preventing gas from the sand core from entering the casting and causing porosity and scrap, thus improving the casting yield.

[0027] The processing method for the sand core venting channel of the casting pipeline in this application also has the aforementioned beneficial effects. The processing method of this application is simple to operate, with fewer processing steps. It uses copper pipes as sand core venting channels, and at the same time, copper pipes also serve as the core skeleton of the sand core, thus having multiple functions. This effectively optimizes the processing method, avoids complex process flows, effectively reduces processing costs, and improves processing efficiency.

[0028] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above simultaneously. In addition to the purposes, features, and advantages described above, this application also has other purposes, features, and advantages. The following will provide a more detailed description of this application with reference to figures. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a schematic diagram of a copper pipe laid on a drilling platform according to a preferred embodiment of this application;

[0031] Figure 2 This is a schematic diagram of a conical drill bit drilling a copper tube according to a preferred embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the copper tubes laid in the core box mold according to a preferred embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the core box mold according to a preferred embodiment of this application;

[0034] Figure 5 This is a schematic diagram showing the end of the copper tube exposed at the core in a preferred embodiment of this application;

[0035] Figure 6This is a schematic diagram of the filing mechanism according to a preferred embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the structure of the connector according to a preferred embodiment of this application;

[0037] Figure 8 This is a schematic diagram of the connection between the connector and the copper pipe in a preferred embodiment of this application;

[0038] Figure 9 This is a schematic diagram of the structure of the collection box according to a preferred embodiment of this application;

[0039] Legend: 100, Copper pipe; 200, File; 300, Drilling platform; 301, Strip groove; 302, Limiting boss; 400, Tapered needle; 500, Core box mold; 501, Sand injection nozzle; 502, Core head; 1, Mounting bracket; 2, First support plate; 3, Connecting seat; 4, Bearing; 5, Rotating shaft; 6, Connecting piece; 7, Locking piece; 8, Limiting piece; 9, Second support plate; 10, Slider; 11, Limiting plate; 12, Linear motor; 13, Hexagonal head; 14, Auxiliary feeding plate; 15, Support frame; 16, Collection box; 17, Protective filter screen; 18, Extraction pipe; 19, Extraction hole. Detailed Implementation

[0040] The embodiments of this application are described in detail below with reference to the accompanying drawings; however, this application may be implemented in a variety of different ways as defined and covered below.

[0041] Figure 1 This is a schematic diagram of a copper pipe laid on a drilling platform according to a preferred embodiment of this application; Figure 2 This is a schematic diagram of a conical drill bit drilling a copper tube according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of the copper tubes laid in the core box mold according to a preferred embodiment of this application; Figure 4 This is a schematic diagram of the core box mold according to a preferred embodiment of this application; Figure 5 This is a schematic diagram showing the end of the copper tube exposed at the core in a preferred embodiment of this application; Figure 6 This is a schematic diagram of the filing mechanism according to a preferred embodiment of this application; Figure 7 This is a schematic diagram of the structure of the connector according to a preferred embodiment of this application; Figure 8 This is a schematic diagram of the connection between the connector and the copper pipe in a preferred embodiment of this application; Figure 9 This is a schematic diagram of the structure of the collection box according to a preferred embodiment of this application.

[0042] A processing apparatus for venting channels in casting pipe sand cores is used to process venting channels on the pipe sand cores while simultaneously casting them. The apparatus comprises a copper pipe 100, a file 200, a drilling platform 300, a conical needle 400, a core box mold 500, and a filing mechanism.

[0043] The drilling platform 300 is used to limit and support the copper tube 100. The filing mechanism is used to clamp the file 200 and drive the file 200 to file a recessed groove on the copper tube 100. The conical needle 400 is used to continue drilling vent holes at the recessed groove of the copper tube 100. The copper tube 100 is used to be laid in the core box mold 500. The core box mold 500 is used to cast and form the pipeline core sand. The core box mold 500 includes a sand injection nozzle 501 and a core head 502. The sand injection nozzle 501 pours the coated sand into the core box mold 500 and makes the coated sand cover the copper tube 100. The end face of the copper tube 100 is exposed from the core head 502 so that the pipeline sand core can be vented during baking and casting.

[0044] The processing device for the venting channel of the casting pipeline sand core in this application uses a drilling platform 300 to support and limit the copper tube 100. Then, a filing mechanism drives a file 200 to file a recessed groove on the copper tube 100. A conical needle 400 is then used to drill venting holes in the recessed groove of the copper tube 100. Filing the recessed groove thins the wall thickness at the drilled hole, preventing the conical needle 400 from puncturing the copper tube 100 and causing excessively thick burrs that block the venting channel. The copper tube 100 with venting holes is then laid in the core box mold 500. Coated sand is injected into the core box mold 500 through the sand injection nozzle 501, covering the copper tube 100. The end face of the copper tube 100 is exposed from the core head 502, which allows the pipeline sand core to vent during baking and casting. The copper tube 100 serves as both the venting channel and the core skeleton of the sand core. This application can effectively solve the problem of air venting during the casting of coated sand cores for pipelines, prevent gas from the sand core from entering the casting and causing porosity and scrapping, and improve the casting qualification rate.

[0045] Preferably, please refer to Figure 1 , 2 As shown, the drilling platform 300 is provided with multiple limiting protrusions 302 at intervals along its length direction, and the drilling platform 300 is provided with a strip groove 301 along its length direction, and the strip groove 301 passes through each limiting protrusion 302. The strip groove 301 is used to limit the copper tube 100.

[0046] Understandably, in order to provide stable support and limit the copper tube 100 and prevent it from shifting too much during filing and drilling, causing processing deviations and affecting processing efficiency, a strip groove 301 is opened on the drilling platform 300 to limit the copper tube 100. At the same time, multiple limiting bosses 302 are set at intervals along the length of the drilling platform 300. On the one hand, the copper tube 100 is reinforced and the limiting height is increased. On the other hand, the spaced limiting bosses 302 can also play the role of distance judgment and position guidance, which facilitates the control of drilling spacing.

[0047] Preferably, please refer to Figure 6 As shown, the filing mechanism includes a mounting frame 1, a rotating shaft 5, a connecting piece 6, a locking piece 7, and a linear motor 12. A first support plate 2 and a second support plate 9 are respectively provided on opposite sides of the mounting frame 1. Bearings 4 are provided on the opposite side walls of the first support plate 2 and the second support plate 9. One end of the rotating shaft 5 is connected to the bearing 4, and the other end of the rotating shaft 5 is connected to the connecting piece 6. The connecting pieces 6 on both sides are used to limit and clamp the two ends of the file 200. The locking piece 7 is used to cooperate with the pre-set locking screw holes on the side wall of the connecting piece 6 to lock and fix the file 200 to the connecting piece 6. The linear motor 12 is connected to the mounting frame 1 and is used to drive the mounting frame 1 to perform reciprocating linear motion.

[0048] Understandably, the repeated filing of the copper pipe 100 using a file 200 results in significant labor intensity and workload. This application utilizes a filing mechanism to drive the file 200 for efficient filing, greatly reducing the labor intensity for workers. The first support plate 2 and the second support plate 9 on both sides of the mounting frame 1 are connected to the rotating shaft 5 via bearings 4. The rotating shaft 5 is connected to the connecting piece 6. The connecting pieces 6 on both sides clamp and limit the ends of the file 200, and the locking piece 7 locks the file 200 to the connecting piece 6, thus enabling the file 200 to be rotatably mounted. A linear motor 12 drives the mounting frame 1 and the file 200 to reciprocate, enabling the file 200 to perform the filing operation on the copper pipe 100.

[0049] It should be noted that, in one embodiment, the linear motor 12 drives the mounting bracket 1 and the file 200 to reciprocate along the axial direction of the file 200, thereby efficiently creating recessed grooves on the copper tube 100; in another embodiment, the linear motor 12 drives the mounting bracket 1 and the file 200 to reciprocate along the radial direction of the file 200, thereby enabling operations such as grinding and enlarging holes with the file 200, which can meet different usage scenarios.

[0050] It should be noted that rubber pads of different thicknesses can be placed in the strip groove 301 of the drilling platform 300. On the one hand, this can prevent the copper tube 100 from slipping and limit its movement, and on the other hand, it can also make it easier to control the depth of the recessed groove that has been filed out.

[0051] Preferably, please refer to Figure 7 , 8 As shown, the first end of the connector 6 has a connecting hole, and multiple limiting slots are arranged in a ring array on the side wall of the connecting hole. The connecting holes of the connectors 6 on both sides are used to limit the two ends of the file 200, and the locking screw hole is opened on the side wall of the connecting hole.

[0052] It is understandable that the connector 6 is a cylindrical structure with a connecting hole at the first end, and multiple limiting slots are arranged in a ring array on the side wall of the connecting hole, making the side wall of the connecting hole a multi-plate structure in a ring array. The limiting slots not only play a stronger role in locking the file 200 and increasing the friction between the cylindrical file 200 and the inner wall of the connecting hole, but also allow the limiting slots to discharge debris from the connecting hole in a timely manner, reducing the accumulation of debris generated by grinding in the connecting hole and preventing it from affecting the connection strength of the file 200.

[0053] Preferably, please refer to Figure 7 , 8 As shown, the filing mechanism also includes a limiting member 8. Limiting screw holes are provided on both sides of the mounting bracket 1. The limiting screw holes are used to set the limiting member 8. The limiting member 8 is used to pass through the limiting screw holes and engage with the locking member 7 to limit the rotation of the locking member 7, the connecting member 6 and the rotating shaft 5.

[0054] It is understandable that by limiting the rotation of the locking part 7, the connecting part 6 and the rotating shaft 5 through the limiting part 8, the fixed mounting clamp of the file 200 can be realized. At this time, one working surface of the file 200 can be used for rapid grinding and filing operations, so that the file 200 can be rotated or fixed in different mounting groups to perform different modes of work.

[0055] Preferably, multiple locking elements 7 are provided, and each locking element 7 engages with a plurality of locking screw holes arranged in a ring on the side wall of the connecting hole. The multiple locking elements 7 can strengthen the fastening and limiting of the file 200, and can also work with the limiting element 8 to limit and fix the file 200 at different angles, so as to use different working surfaces of the file 200 for grinding work.

[0056] Preferably, please refer to Figure 7 , 8 As shown, the locking member 7 includes a hexagonal head 13 and a stud. The hexagonal head 13 is located on the top of the stud. The limiting member 8 includes a limiting cylinder and a handle. The handle is located on the top of the limiting cylinder. The outer wall of the limiting cylinder is provided with external threads. The inner hole of the limiting cylinder is hexagonal to cooperate with the hexagonal head 13.

[0057] It is understandable that the locking sleeve is engaged with the locking member 7 by the hexagonal head 13 of the limiting sleeve, that is, the limiting member 8 blocks the rotation of the locking member 7, so as to achieve the fixed installation of the file 200. The adjustment method of the limiting member 8 is also very convenient. The limiting member 8 and the locking member 7 can be connected and engaged by turning the handle of the limiting member 8.

[0058] Preferably, please refer to Figure 6 As shown, the filing mechanism also includes a limiting plate 11, a slider 10 is provided at the bottom of the first support plate 2, a sliding groove is provided on the limiting plate 11, the slider 10 is used to slide in the sliding groove, the linear motor 12 is connected to the second support plate 9, and the linear motor 12 is used to drive the second support plate 9 and the first support plate 2 to reciprocate along the sliding groove.

[0059] Understandably, the limiting plate 11 can strengthen and limit the overall movement of the filing mechanism, which is beneficial to the linear motor 12 in order to achieve the overall motion stability of the mounting frame 1 and its components.

[0060] Preferably, please refer to Figure 6 As shown, the filing mechanism also includes a collection box 16 and an air extraction pipe 18. The collection box 16 is used to collect debris falling from the copper pipe 100. An air extraction hole 19 is provided on the side wall of the collection box 16. The air extraction hole 19 is used to connect to the first end of the air extraction pipe 18. The second end of the air extraction pipe 18 is used to connect to an external air pump. A protective filter screen 17 is provided on both the air extraction hole 19 and the air extraction pipe 18.

[0061] Understandably, by using the collection box 16 in conjunction with the exhaust pipe 18, the debris generated during the grinding process, as well as dust and impurities floating in the air, can be collected and cleaned in a timely manner, preventing debris from scattering everywhere, reducing the workload of workers in cleaning, and reducing the impact of dust particles on workers' respiratory health.

[0062] Preferably, please refer to Figure 6 , 9 As shown, a pair of auxiliary feeding plates 14 are provided above the collection box 16. The auxiliary feeding plates 14 on both sides are supported by support frames 15 and are hinged to each other. The auxiliary feeding plates 14 on both sides are inclined downward toward the center line of the collection box 16.

[0063] It is understandable that the auxiliary feed plate 14 can help the debris enter the collection box 16 smoothly, and the auxiliary feed plates 14 on both sides are relatively inclined, which can increase the size of the inlet of the collection box 16 and improve the collection capacity of the collection box 16.

[0064] Preferably, the auxiliary feed plate 14 is hinged to the support frame 15 by a torsion spring. The upper part of the auxiliary feed plate 14 is a solid plate structure and the lower part is a filter screen structure. The air extraction hole 19 is set on the upper part of the side wall of the collection box 16. The filter screen is used to extend into the inside of the collection box 16 and block the air extraction hole 19. The filter screen can not only provide a buffer when the debris is drawn into the collection box 16, reducing the impact and collision of the debris on the collection box 16, but also provide multiple protections for the air extraction hole 19, reducing the entry of debris into the air extraction pipe.

[0065] According to another aspect of this application, a method for processing a sand core venting channel for a casting pipeline is also provided, which employs the aforementioned processing apparatus for a sand core venting channel for a casting pipeline, and includes the aforementioned steps:

[0066] S100, Lay the copper pipe 100 on the drilling platform 300 and limit the copper pipe 100 by the drilling platform 300;

[0067] S200: Use file 200 to file a recessed groove on copper tube 100;

[0068] S300. Use a cone drill to drill a hole in the recessed groove of the copper tube 100 to create an exhaust hole;

[0069] S400, the copper tube 100 with vent holes is laid in the core box mold 500 according to the shape, the end face of the copper tube 100 is exposed from the core head 502, and a layer of white wax is coated on the surface of each vent hole to prevent the coating sand from entering the copper tube 100 from the vent hole and blocking the venting channel.

[0070] S500. Close the core box mold 500 and pour in the coated sand through its sand injection nozzle 501. The copper tube 100 needs to be covered by the coated sand. After filling with coated sand, put the core box mold 500 into the oven for heating and curing. Curing temperature: 350℃~400℃, curing time: 28~32min.

[0071] S600. After the sand core has solidified, remove the core box mold 500 from the oven and let it cool. Then, open the mold and remove the pipeline sand core, and check the surface quality of the pipeline sand core.

[0072] The processing method for the sand core venting channel of the casting pipeline in this application also has the aforementioned beneficial effects. The processing method of this application is simple to operate and has fewer processing steps. It uses the copper tube 100 as the sand core venting channel, and at the same time, the copper tube 100 is also the core of the sand core, which has multiple functions. This effectively optimizes the processing method, avoids complex process flows, effectively reduces processing costs, and improves processing efficiency.

[0073] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0074] This document uses specific examples to illustrate the principles and implementation methods of this application. The examples are merely for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make various improvements, modifications, or variations without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered as protected by this application.

Claims

1. A processing device for exhaust channels in casting pipeline sand cores, used to process exhaust channels on the pipeline sand cores simultaneously during casting, characterized in that, The processing device for the sand core venting channel of the casting pipeline includes a copper pipe (100), a file (200), a drilling platform (300), a taper (400), a core box mold (500), and a filing mechanism: The drilling platform (300) is used to limit and support the copper tube (100), the filing mechanism is used to clamp the file (200) and drive the file (200) to file a recessed groove on the copper tube (100), the awl (400) is used to continue drilling vent holes at the recessed groove of the copper tube (100), the copper tube (100) is used to lay in the core box mold (500), the core box mold (500) is used to cast and form the core sand of the pipeline, and the core box mold (500) includes sand shooting. The nozzle (501) and the core head (502) are used to inject coated sand into the core box mold (500) and cover the copper tube (100). The end face of the copper tube (100) is exposed from the core head (502) to allow the sand core to vent during baking and casting. The filing mechanism includes a mounting frame (1), a rotating shaft (5), a connector (6), a locking component (7), and a linear motor (12). The mounting frame (1) is provided with a filing mechanism on each of its opposite sides. The first support plate (2) and the second support plate (9) are equipped with bearings (4) on their opposite sidewalls. One end of the rotating shaft (5) is connected to the bearing (4), and the other end of the rotating shaft (5) is connected to the connector (6). The connectors (6) on both sides are used to limit and clamp the two ends of the file (200). The locking part (7) is used to cooperate with the locking screw hole on the sidewall of the connector (6) and to connect the file (200) to the connector (6). ) Locking and fixing; Linear motor (12) is connected to mounting bracket (1), and linear motor (12) is used to drive mounting bracket (1) to perform reciprocating linear motion; The filing mechanism also includes a limiting member (8), and limiting screw holes are opened on both sides of the mounting bracket (1). The limiting screw holes are used to set the limiting member (8). The limiting member (8) is used to pass through the limiting screw hole and engage with the locking member (7) to limit the rotation of the locking member (7), the connecting member (6) and the rotating shaft (5).

2. The processing device for the sand core exhaust channel of a casting pipeline according to claim 1, characterized in that, The drilling platform (300) has multiple limiting bosses (302) spaced apart along its length. The drilling platform (300) has a strip groove (301) along its length and the strip groove (301) passes through each limiting boss (302). The strip groove (301) is used to limit the copper tube (100).

3. The processing device for the sand core exhaust channel of a casting pipeline according to claim 1, characterized in that, The first end of the connector (6) is provided with a connecting hole, and multiple limiting slots are provided in a ring array on the side wall of the connecting hole. The connecting holes of the connectors (6) on both sides are used to limit the two ends of the file (200), and the locking screw hole is provided on the side wall of the connecting hole.

4. The processing device for the sand core exhaust channel of a casting pipeline according to claim 1, characterized in that, The locking component (7) includes a hexagonal head (13) and a stud. The hexagonal head (13) is located on the top of the stud. The limiting component (8) includes a limiting cylinder and a handle. The handle is located on the top of the limiting cylinder. The outer wall of the limiting cylinder is provided with external threads. The inner hole of the limiting cylinder is hexagonal to cooperate with the hexagonal head (13).

5. The processing device for a sand core exhaust channel of a casting pipeline according to claim 1, characterized in that, The filing mechanism also includes a limiting plate (11), a slider (10) is provided at the bottom of the first support plate (2), a groove is provided on the limiting plate (11), the slider (10) is used to slide in the groove, the linear motor (12) is connected to the second support plate (9), and the linear motor (12) is used to drive the second support plate (9) and the first support plate (2) to reciprocate along the groove.

6. The processing device for the sand core exhaust channel of a casting pipeline according to claim 1, characterized in that, The filing mechanism also includes a collection box (16) and an air extraction pipe (18). The collection box (16) is used to collect debris falling from the copper pipe (100). An air extraction hole (19) is provided on the side wall of the collection box (16). The air extraction hole (19) is used to connect to the first end of the air extraction pipe (18). The second end of the air extraction pipe (18) is used to connect to an external air pump. A protective filter screen (17) is provided on both the air extraction hole (19) and the air extraction pipe (18).

7. The processing device for the sand core exhaust channel of a casting pipeline according to claim 6, characterized in that, A pair of auxiliary feeding plates (14) are provided above the collection box (16). The auxiliary feeding plates (14) on both sides are supported by the support frame (15) and the auxiliary feeding plates (14) and the support frame (15) are hinged. The auxiliary feeding plates (14) on both sides are inclined downward toward the center line of the collection box (16).

8. A method for processing a sand core exhaust channel in a casting pipeline, characterized in that, The processing apparatus for the sand core venting channel of the casting pipeline as described in any one of claims 1-7 includes the following steps: S100, Lay the copper pipe (100) on the drilling platform (300) and limit the copper pipe (100) by the drilling platform (300); S200, Use a file (200) to file a recessed groove on the copper tube (100); S300. Use a cone to drill a hole in the recessed groove of the copper tube (100) to create an exhaust hole; S400, The copper tube (100) with the vent holes punched is laid in the core box mold (500) according to the shape. The end face of the copper tube (100) is exposed from the core head (502). A layer of white wax is coated on the surface of each vent hole to prevent the coating sand from entering the copper tube (100) from the vent hole and blocking the venting channel. S500. Close the core box mold (500) and pour in the coated sand from its sand injection nozzle (501). The copper tube (100) needs to be covered by the coated sand. After filling with the coated sand, put the core box mold (500) into the oven for heating and curing. Curing temperature: 350℃~400℃, curing time: 28~32min. S600. After the sand core has solidified, remove the core box mold (500) from the oven and let it cool. Then open the mold and remove the pipeline sand core, and check the surface quality of the pipeline sand core.

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