Burr treatment device and treatment method for high-strength steel casting production

Abstract

The invention belongs to the field of industrial burr treatment equipment, and provides a burr treatment device and method for high-strength steel casting production. The burr treatment device comprises a polishing pipe cavity distributed in a grid shape and a circulating pump communicating with the polishing pipe cavity; through the arrangement of the telescopic hoses distributed in a unitized grid mode and the cooperation of the cavity adsorption structures of the telescopic hoses, the device can be suitable for notch defect polishing during local machining of the surface of the large workpiece, the problem that polishing is difficult during local machining of the large workpiece can be effectively solved, and especially in remachining of the polished large workpiece, the polishing efficiency is improved. Local reprocessing polishing operation can be completed without putting a large workpiece into a large polishing procedure of a production line again, and good use flexibility and multi-scene object adaptability are achieved.

Description

Technical Field

[0001] The invention belongs to the field of industrial burr processing equipment, and in particular relates to a burr processing device and a processing method for producing high-strength steel castings. Background Art

[0002] Workpiece polishing is a process of treating the workpiece surface through physical or chemical methods to make it smooth, flat and have the required gloss. By properly selecting the polishing process, the appearance quality, wear resistance and corrosion resistance of the workpiece can be significantly improved.

[0003] For small workpieces, direct cover polishing can be performed, such as assembly line polishing equipment, submerged chemical polishing, sand polishing, and solution immersion needle polishing. However, for large structural parts, especially when multiple local processing steps are required on the surface of the structural parts, the existing polishing methods have certain disadvantages. If the entire workpiece is polished each time, the surface accuracy of the workpiece may be lost. If all the processing steps are completed and then polished in one go, the burrs on the surface may cause harm to the equipment and personnel during the transfer between the steps, which has a high safety risk. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a burr treatment device and treatment method for the production of high-strength steel castings, aiming to solve the problems raised in the background technology.

[0005] The embodiment of the present invention is achieved as follows: a burr treatment device for producing high-strength steel castings includes a polishing tube cavity and a circulation pump;

[0006] There are multiple polishing lumens, and the multiple polishing lumens are adjacently distributed in a staggered grid in the same plane. The polishing lumens include a telescopic hose with an open end and a pair of circulation pipes connected to the telescopic hose at the other end of the telescopic hose;

[0007] The telescopic hose is provided with a sand discharge chamber, a sand return chamber, and an adsorption chamber in the radial direction. The sand discharge chamber is separated from the sand return chamber and the adsorption chamber inside the telescopic hose and is connected to a circulation pipe. The sand return chamber and the adsorption chamber are connected to each other inside the telescopic hose and are connected to a circulation pipe. The partition wall of the sand discharge chamber is shorter than the walls on both sides of the adsorption chamber.

[0008] A pair of circulation pipes are respectively connected to the output and input ends of the circulation pump, so as to drive the sand-mixed high-speed airflow to flow in the direction from the sand-discharging chamber to the sand-returning chamber through the circulation pump.

[0009] As a further solution of the present invention: further comprising an electronically controlled valve provided on the circulation pipe;

[0010] The electronically controlled valves are arranged in pairs and correspond to the circulation pipes, and each electronically controlled valve is individually controlled to control the opening and closing state of the circulation pipes;

[0011] Each of the polishing tube cavities is provided with an adsorption monitoring sensor, and the adsorption monitoring sensor is used to monitor and determine the sealing state of the adsorption cavity and the polishing surface.

[0012] As a further solution of the present invention: a control component is also included, specifically including:

[0013] A state monitoring unit is used to judge the adsorption sealing state of each polishing lumen through an adsorption monitoring sensor and mark it according to whether a set threshold is reached;

[0014] A solution decision unit is used to set a polishing mode based on the judgment result. If the value is greater than a set threshold, a basic polishing mode is set; if the value is less than the set threshold, a surround polishing mode is set;

[0015] The polishing control unit is used to execute polishing control. If it is the basic polishing mode, the opening and closing states of each pair of electronically controlled valves are controlled synchronously. If it is the surrounding polishing mode, the electronically controlled valve of the sand outlet cavity corresponding to the polishing cavity outside the poorly sealed polishing cavity located in the center position is controlled to be closed, and the electronically controlled valve of the sand return cavity corresponding to the polishing cavity is controlled to be opened.

[0016] As a further solution of the present invention: further comprising a mounting disk;

[0017] The mounting plate is a plate-like structure, and a plurality of staggered assembly holes are provided on the surface. The distances between adjacent assembly holes are consistent, and the plurality of assembly holes are distributed in a diffused manner.

[0018] The polishing tube cavity is positioned and assembled through the assembly hole. A limiting piece is also provided on the top of the polishing tube cavity. The limiting piece is abutted against the edge of the assembly hole to control the installation depth of several polishing tube cavities to be consistent.

[0019] As a further solution of the present invention: the telescopic hose is made of a flexible telescopic material and can be telescoped along the length direction;

[0020] The polishing lumen further comprises an axially maintaining telescopic member, which is made of a rigid material, and whose two ends are respectively fixedly connected to the two ends of the polishing lumen.

[0021] As a further solution of the present invention: the circulation pump and the circulation pipe are connected through a collecting pipe group, and the collecting pipe group includes an air outlet cavity and an air return cavity;

[0022] The air outlet cavity and the air return cavity are respectively connected to a plurality of circulation pipes corresponding to the sand outlet cavity and the sand return cavity, and the air outlet cavity and the air return cavity are isolated from each other;

[0023] A sand mixing pipe is also provided on the top of the collecting pipe group for communicating with the air outlet cavity and mixing in polishing sand.

[0024] As a further solution of the present invention: the mounting plate is fixedly mounted on one end of the circulating pump via a connecting frame, and an extended mounting position is provided on the other end of the circulating pump.

[0025] A burr treatment device for producing high-strength steel castings, comprising the following steps:

[0026] The surface of the polishing part of the workpiece to be polished is fitted by a number of telescopic hoses distributed in a staggered grid pattern;

[0027] The circulating pump drives the sand-containing high-speed airflow to flow between the sand discharge chamber and the sand return chamber, and the sand is adsorbed through the adsorption chamber that fits the surface of the workpiece to be polished. The sand-containing high-speed airflow rubs against the burrs on the surface of the workpiece to be polished.

[0028] The embodiments of the present invention provide a burr treatment device and treatment method for the production of high-strength steel castings. Through the arrangement of a unitized grid-distributed telescopic hose and the cavity adsorption structure of the telescopic hose, the device and treatment method can be applied to the polishing of cut defects during local processing of the surface of large workpieces. The device and treatment method can effectively solve the problem of polishing difficulties during local processing of large workpieces, especially in the reprocessing of polished large workpieces. The device and treatment method can complete the local reprocessing and polishing operation without putting the large workpiece back into the large polishing process of the production line. The device and treatment method have good flexibility of use and adaptability to multiple scene objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional structural diagram of a burr treatment device for producing high-strength steel castings provided by an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of a polishing tube cavity in a burr removal device for producing high-strength steel castings provided by an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the bottom structure of a polishing tube cavity in a burr removal device for producing high-strength steel castings provided by an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of the coordination between the polishing tube cavity and the collecting tube group in a burr removal device for high-strength steel casting production provided by an embodiment of the present invention;

[0033] Figure 5 A schematic structural diagram of a polishing tube cavity in a burr removal device for producing high-strength steel castings provided by an embodiment of the present invention;

[0034] Figure 6 A schematic structural diagram of a mounting plate in a burr removal device for producing high-strength steel castings provided by an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the cooperation between a circulating pump and a mounting plate in a burr removal device for producing high-strength steel castings provided by an embodiment of the present invention.

[0036] In the accompanying drawings: 1-polishing tube cavity, 110-telescopic hose, 111-adsorption chamber, 112-sand return chamber, 113-sand discharge chamber, 120-electronic control valve, 130-circulation pipe, 140-axial maintenance telescopic member, 2-mounting plate, 210-assembly hole, 3-connecting frame, 4-collecting pipe group, 410-sand mixing pipe, 5-circulation pump. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] like Figures 1 to 3 As shown, a burr treatment device for producing high-strength steel castings provided by one embodiment of the present invention includes a polishing tube cavity 1 and a circulation pump 5;

[0040] There are multiple polishing lumens 1, and the multiple polishing lumens 1 are adjacently distributed in a staggered grid pattern in the same plane. The polishing lumens 1 include a telescopic hose 110 with an open end and a pair of circulation pipes 130 connected to the telescopic hose 110 at the other end of the telescopic hose 110;

[0041] The telescopic hose 110 is provided with a sand discharge chamber 113, a sand return chamber 112, and an adsorption chamber 111 along the radial direction. The sand discharge chamber 113 is separated from the sand return chamber 112 and the adsorption chamber 111 inside the telescopic hose 110 and is connected to a circulation pipe 130. The sand return chamber 112 and the adsorption chamber 111 are connected to each other inside the telescopic hose 110 and are connected to the circulation pipe 130. The partition wall of the sand discharge chamber 113 is shorter than the side walls of the adsorption chamber 111.

[0042] A pair of circulation pipes 130 are respectively connected to the output and input ends of the circulation pump 5 , so as to drive the sand-mixed high-speed airflow to flow from the sand-discharging chamber 113 to the sand-returning chamber 112 through the circulation pump.

[0043] In an embodiment of the present invention, a burr removal device for the production of high-strength steel castings is provided. By setting a unitized grid-distributed telescopic hose 110 and coordinating with the cavity adsorption structure of the telescopic hose, the device can be applied to the polishing of cut defects during local processing of the surface of a large workpiece, and can effectively solve the problem of polishing difficulties during local processing of a large workpiece. In particular, in the reprocessing of a polished large workpiece, the local reprocessing and polishing operation can be completed without putting the large workpiece back into the large polishing process of the production line. The device has good flexibility of use and adaptability to multiple scene objects.

[0044] In one embodiment of the present invention, in the workpiece polishing process of the prior art, the workpiece is mostly polished as a whole. For small workpieces, the workpiece can be polished as a whole by passing or immersing it in the equipment or pool of the polishing process (such as submerged sand polishing, chemical polishing, and needle polishing in solvent, etc.). For small equipment, such a one-time polishing process is simple and convenient to execute, but for large workpieces, there are many processing steps and some steps may only process local structures. If the whole workpiece is polished each time, a certain surface accuracy loss may be caused to the workpiece in the end. If all steps are completed and then polished once, the burrs on the surface may cause harm to the equipment personnel during the transfer between steps, which has a high safety risk. This embodiment is intended to provide a highly adaptable polishing equipment that can be used for local polishing of large workpieces. Specifically, the air flow sand blasting polishing adopted here is the basic implementation method, but the air flow nozzle is set in a closed and unitized manner, that is, the overall large suction The attached sandblasting chamber is unitized into several polishing cavities 110 distributed in an array. The advantage of this arrangement is that it can better adapt to the surface structure of large workpieces. For a larger single sandblasting chamber structure, if the structure of the workpiece surface is not flat, there may be incomplete fitting areas around it, and high-speed airflow and sandblasting will be ejected from the gaps, causing environmental pollution and affecting the safety of workers. There may even be high-risk safety accidents where high-speed sandblasting directly injures workers. In this embodiment, through the gridded and unitized small polishing cavities 1 setting, the smaller structure can better fit the structural undulations of the workpiece surface. Even if it is not completely closed, its gap will be correspondingly smaller; and the gridded independent polishing cavities 1 setting can achieve separate control. Therefore, even if the polishing cavity 1 at the center position is not completely sealed, the polishing cavity 1 centered on it can be used as a buffer structure, and by controlling it to only open the return sand cavity 112, it can also be used as an auxiliary sand return structure for the polishing cavity 1 at the center position, thereby achieving efficient recovery of the leaked sandblasting.

[0045] like Figures 1 to 4As shown, as a preferred embodiment of the present invention, it also includes an electronic control valve 120 provided on the circulation pipe 130;

[0046] The electronically controlled valves 120 are arranged in pairs and correspond to the circulation pipes 130 , and each electronically controlled valve 120 is individually controlled to control the opening and closing state of the circulation pipes 130 ;

[0047] Each of the polishing tube cavities 1 is provided with an adsorption monitoring sensor, which is used to monitor and determine the sealing state of the adsorption cavity 111 and the polishing surface.

[0048] Further: also includes a control component, specifically including:

[0049] A state monitoring unit is used to judge the adsorption sealing state of each polishing lumen 1 through an adsorption monitoring sensor and mark it according to whether a set threshold is reached;

[0050] A solution decision unit is used to set a polishing mode based on the judgment result. If the value is greater than a set threshold, a basic polishing mode is set; if the value is less than the set threshold, a surround polishing mode is set;

[0051] The polishing control unit is used to execute polishing control. If it is the basic polishing mode, the opening and closing states of each pair of electronically controlled valves 120 are controlled to be synchronized. If it is the surrounding polishing mode, the electronically controlled valve of the sand-discharging cavity 113 corresponding to the polishing cavity 1 outside the poorly sealed polishing cavity 1 at the center position is controlled to be closed, and the electronically controlled valve of the sand-returning cavity 112 is controlled to be opened.

[0052] In one embodiment of the present invention, the structure and control components in the previous embodiment are further supplemented to further improve its working mode. Specifically, each polishing tube cavity 1 corresponds to a pair of electronically controlled valves 120, which are respectively used to control the circulation pipe 130 connecting the sand-discharging chamber 113 and the sand-returning chamber 112. When the pair of electronically controlled valves 120 are in the open state, the polishing tube cavity 1 undergoes two changes through the action of the circulation pump 5. First, the adsorption chamber 111 adheres to the workpiece surface under the action of the airflow and is sealed under the action of suction (completely sealed under ideal conditions). Second, the high-speed airflow containing sand ejected from the sand-discharging chamber 113 frictionally contacts the workpiece surface and refluxes through the sand-returning chamber 112 to form a cycle. When the electronically controlled valve 120 corresponding to the sand-discharging chamber 113 is closed, the polishing tube cavity 1 only flows in one direction through the sand-returning chamber 112. At this time, as long as the polishing tube cavity 1 is controlled incompletely When the polishing tube cavity 1 at the polishing position is well adsorbed on the surface, a pair of electronically controlled valves 120 of the polishing tube cavity 1 at the corresponding position are controlled to open and close in pairs. If the polishing tube cavity 1 at the polishing position fails to be well adsorbed on the surface, at least one circle of the polishing tube cavity 1 surrounding it is retained on its outer circle to be used as a recovery mechanism, that is, the polishing tube cavity 1 of this part is controlled to only open the electronic control valve corresponding to the sand return cavity 112; specifically, the direction of the sealing gap can be further judged, so that only multiple polishing tube cavities 1 facing one side can be controlled to be used as a recovery mechanism, which can reduce the occupation of the total amount of polishing tube cavities 1 by the recovery mechanism, increase the number of polishing tube cavities 1 used for actual effective polishing operations, and improve polishing efficiency.

[0053] like Figure 1 、 Figure 6 and Figure 7 As shown, as another preferred embodiment of the present invention, it also includes a mounting plate 2;

[0054] The mounting plate 2 is a plate-like structure, and a plurality of staggered assembly holes 210 are provided on the surface. The distances between adjacent assembly holes 210 are consistent, and the plurality of assembly holes 210 are distributed in a diffused manner.

[0055] The polishing tube cavity 1 is positioned and assembled through the assembly hole 210. A limiting plate is also provided on the top of the polishing tube cavity 1. The limiting plate is abutted against the edge of the assembly hole 210 to control the installation depth of several polishing tube cavities 1 to be consistent.

[0056] Furthermore: the telescopic hose 110 is made of a flexible telescopic material and can be telescoped along the length direction;

[0057] The polishing lumen 1 further includes an axially maintaining telescopic member 140 . The axially maintaining telescopic member 140 is made of a rigid material, and its two ends are fixedly connected to the two ends of the polishing lumen 1 respectively.

[0058] In one embodiment of the present invention, a grid-shaped distribution positioning and installation method of the polishing tube cavity 1 is supplemented. Since the tubular structure part of the polishing tube cavity 1 is made of soft material, it needs to be fixedly installed by a mounting plate 2 of rigid material. Such a slot-type independent installation method can facilitate efficient and fast maintenance and disassembly. At the same time, due to the soft material, it is also necessary to use the axially maintained telescopic part 140 of rigid material to limit its orientation and prevent it from swinging around at will during use. At the same time, the axially maintained telescopic part 140 can achieve the control purpose of electromagnetic drive and realize the active control effect of its telescopic length, so as to cope with more complex polishing scenarios.

[0059] like Figure 1 、 Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, the circulation pump 5 is connected to the circulation pipe 130 through a collection pipe group 4, and the collection pipe group 4 includes an air outlet cavity and an air return cavity;

[0060] The air outlet cavity and the air return cavity are respectively connected to a plurality of circulation pipes 130 corresponding to the sand outlet cavity 113 and the sand return cavity 112, and the air outlet cavity and the air return cavity are isolated from each other;

[0061] A sand mixing pipe 410 is further provided on the top of the collecting pipe group 4 for communicating with the air outlet cavity and mixing polishing sand.

[0062] Furthermore: the mounting plate 2 is fixedly mounted on one end of the circulating pump 5 via a connecting frame 3, and the other end of the circulating pump 5 is provided with an extended mounting position.

[0063] In one embodiment of the present invention, a sand mixing pipe 410 is added for the purpose of mixing a certain amount of polishing sand into the air circulation pipeline. This is because after the equipment is shut down, the polishing sand in the pipeline will fall down. After the subsequent restart, the fallen polishing sand is difficult to be blown up and mixed evenly again. Therefore, polishing sand needs to be re-injected from the outside for uniform mixing during startup; the extended mounting position can be used to install the burr processing device on a robotic arm or a multi-axis drive structure to realize fully automatic positioning-driven polishing operations.

[0064] The embodiment of the present invention further aims to provide a method for treating burrs used in the production of high-strength steel castings, the method comprising:

[0065] The surface of the polishing part of the workpiece to be polished is fitted by a plurality of telescopic hoses 110 distributed in a staggered grid pattern;

[0066] The circulating pump 5 drives the sand-containing high-speed airflow to flow between the sand discharge chamber 113 and the sand return chamber 112, and is adsorbed by the adsorption chamber 111 that is in contact with the surface of the workpiece to be polished, and the sand-containing high-speed airflow rubs against the burrs on the surface of the workpiece to be polished.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A burr treatment device for high-strength steel casting production, characterized in that: It comprises a polishing lumen (1) and a circulation pump (5); The polishing tube cavities (1) are multiple in number, and the multiple polishing tube cavities (1) are adjacently distributed in a staggered grid pattern in the same plane. The polishing tube cavities (1) include a telescopic hose (110) with an opening at one end and a pair of circulation pipes (130) connected to the telescopic hose (110) at the other end of the telescopic hose (110); The telescopic hose (110) is provided with a sand discharge chamber (113), a sand return chamber (112), and an adsorption chamber (111) along the radial direction. The sand discharge chamber (113) is separated from the sand return chamber (112) and the adsorption chamber (111) inside the telescopic hose (110) and is communicated with a circulation pipe (130). The sand return chamber (112) and the adsorption chamber (111) are communicated with each other inside the telescopic hose (110) and are communicated with a circulation pipe (130). The partition wall of the sand discharge chamber (113) is shorter than the walls on both sides of the adsorption chamber (111). A pair of circulation pipes (130) are respectively connected to the output and input ends of the circulation pump (5) so as to drive the sand-mixing high-speed airflow to flow in the direction from the sand-discharging chamber (113) to the sand-returning chamber (112) through the circulation pump.

2. The burr treatment device for producing high-strength steel castings according to claim 1, characterized in that: It also includes an electronic control valve (120) provided on the circulation pipe (130); The electronically controlled valves (120) are arranged in pairs and correspond to the circulation pipes (130), and each electronically controlled valve (120) is individually controlled to control the opening and closing state of the circulation pipes (130); Each polishing cavity (1) is provided with an adsorption monitoring sensor, and the adsorption monitoring sensor is used to monitor and determine the sealing state of the adsorption cavity (111) and the polishing surface.

3. The burr treatment device for producing high-strength steel castings according to claim 2, characterized in that: Also included are control components, specifically: A state monitoring unit is used to judge the adsorption sealing state of each polishing lumen (1) through an adsorption monitoring sensor, and mark it according to whether a set threshold is reached; A solution decision unit is used to set a polishing mode based on the judgment result. If the value is greater than a set threshold, a basic polishing mode is set; if the value is less than the set threshold, a surround polishing mode is set; The polishing control unit is used to perform polishing control. If it is a basic polishing mode, the opening and closing states of each pair of electronically controlled valves (120) are controlled to be synchronized. If it is a surrounding polishing mode, the electronically controlled valve of the polishing lumen (1) outside the poorly sealed polishing lumen (1) at the center position corresponding to the sand outlet chamber (113) is controlled to be closed, and the electronically controlled valve of the sand return chamber (112) is controlled to be opened.

4. The burr removal device for producing high-strength steel castings according to claim 1, characterized in that: Also included is a mounting disk (2); The mounting plate (2) is a plate-like structure, and a plurality of staggered assembly holes (210) are provided on the surface thereof, the distances between adjacent assembly holes (210) are consistent, and the plurality of assembly holes (210) are distributed in a diffused manner; The polishing tube cavity (1) is positioned and assembled through the assembly hole (210), and a limiting plate is further provided on the top of the polishing tube cavity (1), and the limiting plate abuts against the edge position of the assembly hole (210) to control the installation depth of multiple polishing tube cavities (1) to be consistent.

5. The burr removal device for producing high-strength steel castings according to claim 4, characterized in that: The telescopic hose (110) is made of a flexible telescopic material and can be telescoped along the length direction; The polishing lumen (1) further comprises an axially maintaining telescopic member (140), wherein the axially maintaining telescopic member (140) is made of a rigid material, and the two ends of the axially maintaining telescopic member (140) are respectively fixedly connected to the two ends of the polishing lumen (1).

6. The burr removal device for producing high-strength steel castings according to claim 4, characterized in that: The circulation pump (5) is connected to the circulation pipe (130) via a collecting pipe group (4), and the collecting pipe group (4) includes an air outlet cavity and an air return cavity; The air outlet cavity and the air return cavity are respectively connected to a plurality of circulation pipes (130) corresponding to the sand outlet cavity (113) and the sand return cavity (112), and the air outlet cavity and the air return cavity are isolated from each other; A sand mixing pipe (410) is also provided on the top of the collecting pipe group (4) for communicating with the air outlet cavity and mixing in polishing sand.

7. The burr removal device for producing high-strength steel castings according to claim 6, characterized in that: The mounting plate (2) is fixedly mounted on one end of the circulating pump (5) via a connecting frame (3), and an extended mounting position is provided at the other end of the circulating pump (5).

8. A burr treatment method for high-strength steel casting production, characterized in that: The processing method comprises: The surface of the polishing part of the polishing piece is fitted by a plurality of telescopic hoses (110) distributed in a staggered grid pattern; A circulating pump (5) drives a high-speed airflow containing sand to flow between a sand outlet chamber (113) and a sand return chamber (112), and adsorbs the sand through an adsorption chamber (111) that is in contact with the surface of the workpiece to be polished, so that the high-speed airflow containing sand rubs against burrs on the surface of the workpiece to be polished.

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