Machining device and machining method for exhaust channel of casting pipeline sand core

Abstract

The invention discloses a machining device and method for a casting pipeline sand core exhaust channel, and belongs to the technical field of casting machining.The machining device comprises a copper pipe, a file, a punching platform, a conical needle, a core box mold and a hole filing mechanism, the punching platform is used for limiting and supporting the copper pipe, and the hole filing mechanism is used for clamping the file and driving the file to file a sinking groove in the copper pipe; the conical needle is used for continuously drilling an exhaust hole in a sinking groove of the copper pipe, the copper pipe is used for being laid in a core box mold, the core box mold is used for casting and forming pipeline core sand and comprises a sand shooting nozzle and a core head, the sand shooting nozzle is used for filling precoated sand into the core box mold, and the precoated sand covers the copper pipe; the end face of the copper pipe is exposed out of the core head so that the pipeline sand core can be exhausted in the baking and pouring process. A copper pipe, a file, a conical needle, a core box mold and other simple and practical tools can be utilized, a pipeline exhaust channel is formed through a reasonable method, precoated sand pipeline sand core exhaust is achieved, and therefore the influence of gas on a casting is reduced.

Description

Technical Field

[0001] The present application relates to the field of casting processing technology, and in particular, to a processing device for a casting pipe sand core exhaust channel. In addition, the present application also relates to a processing method using the processing device for a casting pipe sand core exhaust channel. Background Art

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

[0003] The air intake casing of a certain aircraft engine is an aluminum-magnesium alloy casting. It is a cylindrical cavity structure with a support plate. There is an annular pipeline in the casting. The pipeline sand core is made of traditional coated sand combined with annealed iron wire. Due to the large amount of gas generated by the coated sand, the pipeline sand core generates gas during pouring and has no exhaust channel, which causes pore defects in the casting and causes the casting to be scrapped. We found that the specific reason is that when the coated sand pipeline sand core is poured, it is affected by the high-temperature molten metal and generates a large amount of gas. Because the sand core has no exhaust channel, the generated gas cannot be discharged in time and enters the casting to cause pore defects, resulting in a large number of castings being scrapped. For this reason, when making pipeline sand cores with coated sand, a reasonable exhaust channel needs to be designed in the pipeline sand core to improve the exhaust efficiency of the pipeline sand core and prevent gas from entering the casting to cause pore defects.

[0004] In view of the above problems, we provide a processing device and method for the exhaust channel of the casting pipeline sand core.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

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

[0007] At the same time, the application also relates to a processing method of a processing device using the above-mentioned casting pipeline sand core exhaust channel.

[0008] According to one aspect of the present application, a processing device for an exhaust channel of a casting pipeline sand core is provided, which is used to process an exhaust channel on the pipeline sand core while casting the pipeline sand core, and is characterized in that the processing device for the exhaust channel of the casting pipeline sand core includes a copper tube, a file, a punching platform, a cone needle, a core box mold and a filing mechanism:

[0009] The punching 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 sinking groove on the copper tube, the cone needle is used to continue drilling exhaust holes at the sinking groove of the copper tube, the copper tube is used to be laid in the core box mold, the core box mold is used to cast pipeline core sand, the core box mold includes a sand shooting nozzle and a core head, the sand shooting nozzle pours the coated sand into the core box mold and makes the coated sand cover the copper tube, and the end face of the copper tube is exposed from the core head to allow the pipeline sand core to be exhausted during baking and pouring.

[0010] In some embodiments of the present application, a plurality of limiting bosses are arranged at intervals on the punching platform along its length direction, a strip groove is opened on the punching platform along its length direction and the strip groove runs through each limiting boss, and the strip groove is used to limit the copper tube.

[0011] In some embodiments of the present application, the filing mechanism includes a mounting frame, a rotating shaft, a connecting piece, a locking piece 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 opposite side walls of the first support plate and the second support plate, one end of the rotating shaft is connected to the bearing, and the other end of the rotating shaft is connected to the connecting piece, the connecting pieces on both sides are used to limit and clamp the two ends of the file, the locking piece is used to cooperate with the preset locking screw holes on the side walls of the connecting piece and lock the file and the connecting piece; the linear motor is connected to the mounting frame, and the linear motor is used to drive the mounting frame to perform reciprocating linear motion.

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

[0013] In some embodiments of the present application, the filing mechanism also includes a limit piece, and limit screw holes are provided on opposite sides of the mounting frame. The limit screw holes are used to set the limit piece, and the limit piece is used to pass through the limit screw holes and engage with the locking piece to limit the rotation of the locking piece, the connecting piece and the rotating shaft.

[0014] In some embodiments of the present application, the locking member includes a hexagonal head and a stud, the hexagonal head is arranged on the top of the stud, the limiting member includes a limiting cylinder and a handle, the handle is arranged on the top of the limiting cylinder, the outer wall of the limiting cylinder is provided with an external thread, and the inner hole of the limiting cylinder is hexagonal in shape to cooperate with the hexagonal head.

[0015] In some embodiments of the present application, the filing mechanism also includes a limiting plate, a slider is provided at the bottom of the first support plate, a sliding groove is opened on the limiting plate, the slider is used to slide in the sliding groove, the 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 sliding groove.

[0016] In some embodiments of the present application, the filing mechanism also includes a collection box and an exhaust pipe. The collection box is used to collect debris that falls on the copper tube. An exhaust hole is opened on the side wall of the collection box. The exhaust hole is used to connect to the first end of the exhaust pipe. The second end of the exhaust pipe is used to connect to an external exhaust pump. Protective filters are provided on the exhaust hole and the exhaust pipe.

[0017] In some embodiments of the present application, a pair of auxiliary feed plates are arranged above the collection box, the auxiliary feed plates on both sides are respectively supported by support frames and the auxiliary feed plates and the support frames are hinged, and the auxiliary feed plates on both sides are arranged to be inclined downward toward the center line of the collection box.

[0018] According to another aspect of the present application, a method for processing a casting pipe sand core exhaust channel is also provided, which uses the above-mentioned casting pipe sand core exhaust channel processing device, and includes the above-mentioned steps:

[0019] S100, laying the copper pipe on the punching platform and limiting the position of the copper pipe through the punching platform;

[0020] S200, use a file to file a sinking groove on the copper tube;

[0021] S300, use a cone needle to drill holes in the sunken groove of the copper tube to make exhaust holes;

[0022] S400, laying the copper tube with the vent holes in the core box mold in accordance with the mold, with the end face of the copper tube exposed from the core head, and coating a layer of white wax on the surface of each vent hole to prevent the coated sand from entering the copper tube from the vent hole to block the vent channel;

[0023] S500, close the core box mold, pour the coated sand from the sand injection nozzle, the copper tube needs to be covered with the coated sand, after the coated sand is filled, put the core box mold into the oven for heating and curing, the curing temperature is: 350℃~400℃, the curing time is: 28~32min;

[0024] S600, after the sand core is solidified, the core box mold is taken out of the oven to cool, and then the mold is opened to take out the pipeline sand core, and the surface quality of the pipeline sand core is checked.

[0025] This application has the following beneficial effects:

[0026] The processing device for the exhaust channel of the casting pipeline sand core of the present application supports and limits the copper tube through the punching platform, and then the filing mechanism can drive the file to file out a sunken groove on the copper tube, and then use the cone needle to continue to drill the exhaust hole at the sunken groove of the copper tube. The filing out of the sunken groove can make the wall thickness at the drilling location thinner, preventing the subsequent cone needle from piercing the copper tube and causing an excessively thick curling edge to block the exhaust channel of the copper tube. The copper tube with the exhaust hole is then laid in the core box mold, and the coated sand is poured into the core box mold through the sand shooting nozzle to cover the copper tube. The end face of the copper tube is exposed from the core head to achieve exhaust of the pipeline sand core during baking and pouring, wherein the copper tube is both the sand core exhaust channel and the sand core core bone. The present application can effectively solve the exhaust problem during the pouring of the coated sand pipeline sand core, prevent the sand core from emitting gas and entering the casting to cause pores and scrap, and improve the qualified rate of castings.

[0027] The processing method of the sand core exhaust channel of the casting pipeline of the present application also has the above-mentioned beneficial effects. The processing method of the present application is simple to operate, has few processing steps, uses the copper tube as the sand core exhaust channel, and the copper tube is also the core bone of the sand core, which has multiple functions, thereby effectively optimizing the processing method, avoiding complex process flow, effectively reducing processing costs, and improving processing efficiency.

[0028] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0030] Figure 1 It is a schematic diagram of the copper pipe laid on the punching platform in the preferred embodiment of the present application;

[0031] Figure 2 is a schematic diagram of drilling a hole on a copper tube using a cone needle in a preferred embodiment of the present application;

[0032] Figure 3 is a schematic diagram of a copper tube laid in a core box mold in a preferred embodiment of the present application;

[0033] Figure 4 It is a structural schematic diagram of a core box mold of a preferred embodiment of the present application;

[0034] Figure 5 It is a schematic diagram showing that the end of the copper tube of the preferred embodiment of the present application is exposed at the core head;

[0035] Figure 6It is a structural schematic diagram of the filing mechanism of the preferred embodiment of the present application;

[0036] Figure 7 It is a structural schematic diagram of a connecting member of a preferred embodiment of the present application;

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

[0038] Fig. 9 It is a structural schematic diagram of a collection box of a preferred embodiment of the present application;

[0039] Legend: 100, copper tube; 200, file; 300, punching platform; 301, strip groove; 302, limit boss; 400, cone needle; 500, core box mold; 501, sand nozzle; 502, core head; 1, mounting frame; 2, first support plate; 3, connecting seat; 4, bearing; 5, rotating shaft; 6, connecting piece; 7, locking piece; 8, limit piece; 9, second support plate; 10, slider; 11, limit plate; 12, linear motor; 13, hexagonal head; 14, auxiliary feed plate; 15, support frame; 16, collection box; 17, protective filter; 18, exhaust pipe; 19, exhaust hole. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0041] Figure 1 It is a schematic diagram of the copper pipe laid on the punching platform in the preferred embodiment of the present application; Figure 2 is a schematic diagram of drilling a hole on a copper tube using a cone needle in a preferred embodiment of the present application; Figure 3 is a schematic diagram of a copper tube laid in a core box mold in a preferred embodiment of the present application; Figure 4 It is a structural schematic diagram of a core box mold of a preferred embodiment of the present application; Figure 5 It is a schematic diagram showing that the end of the copper tube of the preferred embodiment of the present application is exposed at the core head; Figure 6 It is a structural schematic diagram of the filing mechanism of the preferred embodiment of the present application; Figure 7 It is a structural schematic diagram of a connecting member of a preferred embodiment of the present application; Figure 8 is a schematic diagram of the connection between the connector and the copper pipe in the preferred embodiment of the present application; Fig. 9 It is a schematic diagram of the structure of a collection box of a preferred embodiment of the present application.

[0042] A device for processing an exhaust channel of a casting pipeline sand core is used to process an exhaust channel on the pipeline sand core while casting the pipeline sand core. The device is characterized in that the device for processing the exhaust channel of the casting pipeline sand core comprises a copper tube 100, a file 200, a punching platform 300, a cone needle 400, a core box mold 500 and a filing mechanism:

[0043] The drilling platform 300 is used to limit the support of the copper tube 100, the filing mechanism is used to clamp the file 200 and drive the file 200 to file a sunken groove on the copper tube 100, the cone needle 400 is used to continue drilling exhaust holes at the sunken 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 pipeline core sand, the core box mold 500 includes a sand shooting nozzle 501 and a core head 502, the sand shooting nozzle 501 pours the coated sand into the core box mold 500 and makes the coated sand cover the copper tube 100, and the end face of the copper tube 100 is exposed from the core head 502 to allow the pipeline sand core to be exhausted during baking and pouring.

[0044] The processing device of the exhaust channel of the casting pipeline sand core of the present application supports and limits the copper tube 100 through the punching platform 300, and then the filing mechanism can drive the file 200 to file out a sunken groove on the copper tube 100, and then the cone needle 400 is used to continue drilling the exhaust hole at the sunken groove of the copper tube 100. The filing out of the sunken groove can make the wall thickness at the drilling location thinner, preventing the subsequent cone needle 400 from piercing the copper tube 100 and causing an over-thick curling edge to block the exhaust channel of the copper tube. The copper tube 100 with the exhaust hole is then laid in the core box mold 500, and the coated sand is poured into the core box mold 500 through the sand shooting nozzle 501 to cover the copper tube 100, and the end face of the copper tube 100 is exposed from the core head 502 to achieve exhaust of the pipeline sand core during baking and pouring, wherein the copper tube 100 is both the sand core exhaust channel and the sand core core bone. The present application can effectively solve the exhaust problem during the casting process of the coated sand pipe sand core, prevent the sand core from emitting gas and entering the casting to cause pores and scrap, and improve the qualified rate of the casting.

[0045] Preferably, please refer to Figure 1 , 2 As shown, a plurality of limiting bosses 302 are arranged at intervals along the length direction of the punching platform 300 , and a strip groove 301 is opened along the length direction of the punching platform 300 and the strip groove 301 passes through each limiting boss 302 , and the strip groove 301 is used to limit the copper tube 100 .

[0046] It can be understood that in order to provide stable support and limit the copper tube 100 and prevent the copper tube 100 from excessively deviating during grinding and drilling, causing processing deviation and affecting processing efficiency, the copper tube 100 is limited by opening a strip groove 301 on the punching platform 300, and at the same time, a plurality of limit bosses 302 are arranged at intervals along the length direction of the punching platform 300. On the one hand, the copper tube 100 is limited and the limit height is increased. On the other hand, the limit bosses 302 arranged at intervals can also play a role in distance judgment and position guidance, which is convenient for controlling the 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 arranged on opposite sides of the mounting frame 1. Bearings 4 are arranged on 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 for limiting and clamping the two ends of the file 200. The locking piece 7 is used to cooperate with the preset locking screw holes on the side walls of the connecting piece 6 and lock and fix the file 200 to the connecting piece 6; the linear motor 12 is connected to the mounting frame 1, and the linear motor 12 is used to drive the mounting frame 1 to perform reciprocating linear motion.

[0048] It is understandable that since the use of the file 200 requires repeated grinding and filing on the copper tube 100, the labor intensity and the amount of labor are relatively large. The present application drives the file 200 to perform efficient grinding and filing operations through the filing mechanism, which can greatly reduce the labor intensity of the 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 through the bearing 4, and the rotating shaft 5 is connected to the connecting member 6. The connecting members 6 on both sides can clamp and limit the two ends of the file 200, and the file 200 and the connecting member 6 are locked and fixed by the locking member 7, so as to realize the rotatable installation of the file 200. Then, the linear motor 12 drives the mounting frame 1 and the file 200 to reciprocate, so that the file 200 can perform the grinding and filing operation on the copper tube 100.

[0049] It should be noted that, in one embodiment, the linear motor 12 drives the mounting frame 1 and the file 200 to perform reciprocating motion along the axial direction of the file 200, so as to efficiently rub out a sunken groove on the copper tube 100; in another embodiment, the linear motor 12 drives the mounting frame 1 and the file 200 to perform reciprocating motion along the radial direction of the file 200, so as to realize operations such as grinding, filing and expanding the hole of the file 200, which can cope with different usage scenarios.

[0050] It should be noted that rubber pads of different thicknesses can be placed in the strip groove 301 of the punching platform 300 , which can not only prevent the copper tube 100 from slipping, but also conveniently control the depth of the filed sinking groove.

[0051] Preferably, please refer to Figure 7 , 8 As shown, a connecting hole is provided at the first end of the connecting member 6, 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 connecting member 6 on both sides are used to limit the two ends of the file 200, and a locking screw hole is provided on the side wall of the connecting hole.

[0052] It can be understood that the connecting member 6 is a cylindrical structure with a connecting hole at the first end, and a plurality of limiting slots are provided in a circular array on the side wall of the connecting hole, so that the side wall of the connecting hole is a plurality of plate-like structures in a circular array. The limiting slots can not only play a stronger clamping effect on the file 200, and increase the friction between the cylindrical file 200 and the inner wall of the connecting hole, but also the limiting slots can timely discharge the debris in the connecting hole, reduce the accumulation of debris generated by grinding and filing in the connecting hole, and prevent affecting the connection strength of the file 200.

[0053] Preferably, please refer to Figure 7 , 8 As shown, the filing mechanism also includes a limit member 8. Limit screw holes are provided on opposite sides of the mounting frame 1. The limit screw holes are used to set the limit member 8. The limit member 8 is used to pass through the limit 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 can be understood that by limiting the rotation of the locking member 7, the connecting member 6 and the rotating shaft 5 through the limiting member 8, a fixed installation clamp of the file 200 can be realized. At this time, a working surface of the file 200 can be used for rapid filing operations, so that the file 200 can be rotatably or fixedly installed in different ways to perform different modes of work.

[0055] Preferably, there are multiple locking members 7, and the multiple locking members 7 are respectively matched with multiple locking screw holes formed in an annular array on the side wall of the connecting hole. The multiple locking members 7 can strengthen the fastening and limiting of the file 200, and can also cooperate with the limiting member 8 to achieve the limiting and fixing of the file 200 at different angles, so that different working surfaces of the file 200 can be used for grinding and filing.

[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 arranged on the top of the stud, the limiting member 8 includes a limiting cylinder and a handle, the handle is arranged on the top of the limiting cylinder, the outer wall of the limiting cylinder is provided with an external thread, and the inner hole of the limiting cylinder is hexagonal in shape to cooperate with the hexagonal head 13.

[0057] It can be understood that the locking member 7 is snapped into place by the hexagonal head 13 of the limiting cylinder, 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, and the adjustment method of the limiting member 8 is also very convenient, and the limiting member 8 can be turned by the handle to achieve the connection and cooperation between the limiting member 8 and the locking member 7.

[0058] Preferably, please refer to Figure 6 As shown, the filing mechanism also includes a limiting plate 11, a slider 10 is arranged at the bottom of the first support plate 2, a slide groove is opened on the limiting plate 11, the slider 10 is used to be slidably arranged in the slide groove, and 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 slide groove.

[0059] It can be understood that the limiting plate 11 can strengthen the limiting of the filing mechanism as a whole, which is beneficial to cooperate with the linear motor 12 to achieve the overall movement stability of the mounting frame 1 and various components.

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

[0061] It can be understood that the collection box 16 and the exhaust pipe 18 can timely collect and clean the debris generated during the grinding and filing process, as well as the dust impurities floating in the air, to avoid the debris from being scattered everywhere, reduce the labor of workers in cleaning, and reduce the impact of dust particles and impurities on workers' respiratory health.

[0062] Preferably, please refer to Figure 6 , 9 As shown, a pair of auxiliary feed plates 14 are arranged above the collecting box 16. The auxiliary feed plates 14 on both sides are supported by support frames 15 respectively and the auxiliary feed plates 14 and the support frames 15 are hinged. The auxiliary feed plates 14 on both sides are arranged to be tilted downward toward the center line of the collecting box 16.

[0063] It is understandable that the auxiliary feed plate 14 can help the debris to enter the collection box 16 smoothly, and the auxiliary feed plates 14 on both sides are relatively inclined, which can expand 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 through 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 exhaust hole 19 is arranged at the upper part of the side wall of the collection box 16, and the filter screen is used to extend into the interior of the collection box 16 and cover the exhaust hole 19. The setting of the filter screen can not only provide a buffering effect 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 play a multiple protective role for the exhaust hole 19, reducing the debris from entering the exhaust pipe.

[0065] According to another aspect of the present application, a method for processing a casting pipe sand core exhaust channel is also provided, which uses the above-mentioned casting pipe sand core exhaust channel processing device, and includes the above-mentioned steps:

[0066] S100, laying the copper tube 100 on the punching platform 300 and limiting the position of the copper tube 100 by the punching platform 300;

[0067] S200, using a file 200 to file a sinking groove on the copper tube 100;

[0068] S300, using a cone needle to drill a hole at the sunken groove of the copper tube 100 to form an exhaust hole;

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

[0070] S500, close the core box mold 500, pour the coated sand from the sand injection nozzle 501, the copper tube 100 needs to be covered with the coated sand, after being filled with the coated sand, put the core box mold 500 into an oven for heating and curing, the curing temperature is: 350℃~400℃, the curing time is: 28~32min;

[0071] S600, after the sand core is solidified, the core box mold 500 is taken out of the oven to cool, and then the mold is opened to take out the pipeline sand core, and the surface quality of the pipeline sand core is checked.

[0072] The processing method of the sand core exhaust channel of the casting pipeline of the present application also has the above-mentioned beneficial effects. The processing method of the present application is simple to operate, has few processing steps, uses the copper tube 100 as the sand core exhaust channel, and at the same time the copper tube 100 is the core bone of the sand core, which has multiple functions, thereby effectively optimizing the processing method, avoiding complex process flow, effectively reducing processing costs, and improving processing efficiency.

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

[0074] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A device for processing exhaust channels of casting pipe sand cores, used for processing exhaust channels on pipe sand cores while casting pipe sand cores, characterized in that: The processing device for the exhaust channel of the sand core of the casting pipeline comprises a copper tube (100), a file (200), a drilling platform (300), a cone needle (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 sunken groove on the copper tube (100); the cone needle (400) is used to continue drilling an exhaust hole at the sunken groove of the copper tube (100); the copper tube (100) is used to be laid in a core box mold (500); the core box mold (500) is used to cast pipeline core sand; the core box mold (500) comprises a sand shooting nozzle (501) and a core head (502); the sand shooting nozzle (501) pours coated sand into the core box mold (500) and allows the coated sand to cover the copper tube (100); the end surface of the copper tube (100) is exposed from the core head (502) to allow the pipeline sand core to be exhausted during baking and pouring.

2. A processing device for a casting pipe sand core exhaust channel according to claim 1, characterized in that: A plurality of limiting bosses (302) are arranged at intervals on the punching platform (300) along its length direction. The punching platform (300) is provided with a strip groove (301) along its length direction. The strip groove (301) runs through each limiting boss (302). The strip groove (301) is used to limit the copper tube (100).

3. A processing device for a casting pipe sand core exhaust channel according to claim 1, characterized in that: The filing mechanism comprises 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 arranged on opposite sides of the mounting frame (1); bearings (4) are arranged on 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); the other end of the rotating shaft (5) is connected to the connecting piece (6); the connecting pieces (6) on both sides are used for limiting and clamping the two ends of the file (200); the locking piece (7) is used for cooperating with the locking screw holes preset on the side walls of the connecting piece (6) and locking and fixing the file (200) and the connecting piece (6); the linear motor (12) is connected to the mounting frame (1); the linear motor (12) is used for driving the mounting frame (1) to perform reciprocating linear motion.

4. A processing device for a casting pipe sand core exhaust channel according to claim 3, characterized in that: A connecting hole is provided at the first end of the connecting piece (6), 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 connecting pieces (6) on both sides are used to limit the two ends of the file (200), and locking screw holes are provided on the side wall of the connecting hole.

5. The processing device for the exhaust channel of the casting pipe sand core according to claim 3, characterized in that: The filing mechanism also includes a limiting member (8). The mounting frame (1) is provided with limiting screw holes on opposite sides. 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 then engage with the locking member (7) to limit the rotation of the locking member (7), the connecting member (6) and the rotating shaft (5).

6. A processing device for a casting pipe sand core exhaust channel according to claim 5, characterized in that: The locking member (7) comprises a hexagonal head (13) and a stud, wherein the hexagonal head (13) is arranged on the top of the stud, and the limiting member (8) comprises a limiting tube and a handle, wherein the handle is arranged on the top of the limiting tube, and the outer wall of the limiting tube is provided with an external thread, and the inner hole of the limiting tube is hexagonal in shape to match the hexagonal head (13).

7. The device for processing the exhaust channel of the casting pipe sand core according to claim 3, characterized in that: The filing mechanism also includes a limit plate (11), a slider (10) is arranged at the bottom of the first support plate (2), a slide groove is opened on the limit plate (11), the slider (10) is used to be slidably arranged in the slide groove, and a 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 slide groove.

8. The device for processing the exhaust channel of the casting pipe sand core according to claim 3, characterized in that: The filing mechanism further comprises a collecting box (16) and an exhaust pipe (18). The collecting box (16) is used to collect debris dropped from the copper tube (100). An exhaust hole (19) is provided on the side wall of the collecting box (16). The exhaust hole (19) is used to be connected to a first end of the exhaust pipe (18). The second end of the exhaust pipe (18) is used to be connected to an external exhaust pump. A protective filter screen (17) is provided on both the exhaust hole (19) and the exhaust pipe (18).

9. A processing device for a casting pipe sand core exhaust channel according to claim 8, characterized in that: A pair of auxiliary feed plates (14) are arranged above the collection box (16), the auxiliary feed plates (14) on both sides are supported by support frames (15) respectively, and the auxiliary feed plates (14) and the support frames (15) are hinged, and the auxiliary feed plates (14) on both sides are arranged to be tilted downward toward the center line of the collection box (16).

10. A method for processing a casting pipe sand core exhaust channel, characterized in that: A processing device for a casting pipe sand core exhaust channel according to any one of claims 1 to 9 is used, which comprises the following steps: S100, laying the copper tube (100) on the punching platform (300) and limiting the position of the copper tube (100) by the punching platform (300); S200, using a file (200) to file a sinking groove on the copper tube (100); S300, using a cone needle to drill a hole in the sunken groove of the copper tube (100) to form an exhaust hole; S400, laying the copper tube (100) with the exhaust holes in the core box mold (500) in accordance with the mold, with the end face of the copper tube (100) exposed from the core head (502), and coating a layer of white wax on the surface of each exhaust hole to prevent the coated sand from entering the copper tube (100) from the exhaust hole and blocking the exhaust channel; S500, close the core box mold (500), pour coated sand from the sand injection nozzle (501), the copper tube (100) needs to be covered with the coated sand, and after the coated sand is filled, put the core box mold (500) into an oven for heating and curing, the curing temperature is 350°C to 400°C, and the curing time is 28 to 32 minutes; S600, after the sand core is solidified, the core box mold (500) is taken out of the oven to cool, then the mold is opened to take out the pipeline sand core, and the surface quality of the pipeline sand core is checked.

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