An automatic slag ladle device for die castings

Abstract

The application discloses a kind of automatic slag removal package devices of die casting, it is related to waste removal device field, it contains machine table body, shaping pretreatment station, multidimensional cutting station and reshaping finishing station are sequentially arranged along machine table body longitudinal axis, workpiece circulation is realized between each station by conveying mechanism.The shaping pretreatment station and reshaping finishing station are equipped with the positioning fixture with workpiece profile matching cavity, and lower pressure driving assembly is configured above the positioning fixture, the output end of the lower pressure driving assembly is fixedly connected with the forming punch adapted to the feature surface of workpiece, the surface of forming punch is hardened and is equipped with chip removal guide groove.The device is designed by multi-station cooperative operation and automation circulation, effectively improves the efficiency of die casting slag removal and finishing, reduces manual intervention, reduces labor intensity, ensures machining precision and stability, reduces workpiece deformation risk.

Description

Technical Field

[0001] This application relates to the field of waste removal devices, and in particular to an automatic slag removal device for die castings. Background Technology

[0002] In the die-casting production process, slag removal is a key post-processing step, mainly used to remove burrs, flash, and overflow waste remaining on the edges of the workpiece after die casting, directly affecting the dimensional accuracy and surface quality of the product. Currently, the mainstream process relies on manual operation, requiring workers to use handheld electric grinders, files, or pneumatic tools to grind and clean each die-casting piece individually, supplemented by visual inspection to judge the processing effect. Some companies have attempted to introduce semi-automated equipment, such as stationary rotary grinders, but still require manual workpiece clamping, positioning adjustment, and sorting operations, essentially remaining deeply dependent on manual labor.

[0003] Existing technologies have several limitations. First, the efficiency of manual slag removal is limited by the operator's skill level and physical exertion, especially when handling workpieces with complex structures or irregular slag distribution, where the processing time per piece increases significantly, making it difficult to match the cycle time requirements of modern production lines. Second, manual operation lacks stability; new employees, due to a lack of experience, are prone to omissions or over-processing, and fatigue accumulation from prolonged work can exacerbate quality fluctuations, directly affecting product qualification rates. Utility Model Content

[0004] The purpose of this application is to overcome at least one deficiency of the prior art and to provide an automatic slag removal device for die castings.

[0005] To achieve the above objectives, this application discloses an automatic slag removal device for die castings, which includes a machine body, a shaping pretreatment station, a multi-dimensional cutting station and a reshaping and finishing station arranged sequentially along the longitudinal axis of the machine body, and the workpieces are transferred between each station through a conveying mechanism.

[0006] Both the pre-forming station and the re-forming finishing station are equipped with positioning fixtures that have cavities matching the workpiece contour, and a pressing drive assembly is arranged directly above the positioning fixture. The output end of the pressing drive assembly is fixedly connected to a forming punch that matches the feature surface of the workpiece.

[0007] The multi-dimensional cutting station includes a central positioning module, lateral cutting mechanisms symmetrically distributed on both sides of the central positioning module, and a top pressing execution component located above the central positioning module. The central positioning module has a support surface that matches the bottom contour of the workpiece. The top pressing execution component includes an axial pressing module and a vertical blade rigidly connected to it. The cutting edge distribution of the vertical blade corresponds to the slag pack shape on the top surface of the workpiece.

[0008] Furthermore, the lateral cutting mechanism includes a horizontal feed slide and a composite cutting unit mounted thereon. The composite cutting unit consists of a flat cutting tool and an axially arranged side cutting tool, wherein the cutting edge plane of the flat cutting tool is parallel to the workpiece parting surface, and the cutting edge direction of the side cutting tool is perpendicular to the extension direction of the workpiece sidewall. The horizontal feed slide is connected to a cylinder to realize the reciprocating linear motion of the composite cutting unit.

[0009] The top press execution assembly is connected to the machine body via a gantry frame, and its axial pressure module has a built-in pressure sensor.

[0010] Furthermore, when there are holes in the workstation, a punch is also fixed to the output end of the pressure drive component in the reshaping and finishing workstation, which is used to punch and remove the burrs in the hole.

[0011] Furthermore, the positioning fixture of the shaping pretreatment station has a photoelectric sensor for detecting whether the station is in place and a negative pressure hole connected to an external air compressor, which clamps the workpiece by negative pressure.

[0012] Furthermore, the flat cutting tool and the side cutting tool of the composite cutting unit form a main and secondary cutting edge composite structure through a stepped cutting edge design, which improves cutting stability while reducing the risk of tool chip adhesion.

[0013] Furthermore, the machine body is designed with a waste collection trough below the multi-dimensional cutting station.

[0014] Furthermore, the composite cutting unit is detachably mounted on the horizontal feed slide.

[0015] This device, through multi-station collaborative operation and automated workflow design, effectively improves the efficiency of slag removal and finishing of die-cast parts, reduces manual intervention, lowers labor intensity, ensures machining accuracy and stability, and reduces the risk of workpiece deformation. The combination of negative pressure adsorption and multi-dimensional cutting enables efficient processing of complex contours.

[0016] The beneficial effects listed above are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other descriptive sections of this application. Attached Figure Description

[0017] A better understanding of various aspects of this disclosure will be achieved by reading the following detailed description in conjunction with the accompanying drawings. The positions, dimensions, and extents of the structures shown in the drawings, etc., do not always represent actual positions, dimensions, and extents. In the drawings: Figure 1 This is a schematic diagram of the structure of one embodiment disclosed in this application.

[0018] Figure 2This is a schematic diagram of the structure of one embodiment disclosed in this application from another perspective.

[0019] Figure 3 This is a schematic diagram of the structure after removing the machine tool, according to one embodiment of the present application.

[0020] Figure 4 This is a schematic diagram of the structure of the composite cutting unit in one embodiment of this application.

[0021] Figure 5 This is a schematic diagram of the structure of a flat-cutting tool in one embodiment of this application. Detailed Implementation

[0022] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0023] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0024] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this disclosure. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail; however, where appropriate, such techniques, methods, and apparatus should be considered part of this specification.

[0025] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0026] See attached document Figures 1 to 5In this embodiment, an automatic slag removal device for die castings is provided. Its overall structural design aims to achieve efficient slag removal and finishing of die castings. The device uses a machine body 1 to support multiple functional stations. The workpieces are automatically transferred between stations via multi-axis conveyor arms, ensuring the continuity and efficiency of the processing. The multi-axis conveyor arms employ a mechanical structure known in the art, allowing for flexible adjustment of the workpiece's conveying direction and position, ensuring precise transfer of the workpiece between different stations. Specific details are not elaborated further.

[0027] The machine body 1 is made of high-strength cast iron with a rust-proof surface treatment to ensure long-term stability and precision. Three core workstations are arranged sequentially along the longitudinal axis of the machine body 1: a pre-forming workstation 2, a multi-dimensional cutting workstation 3, and a re-forming and finishing workstation 4. Workpiece transfer between workstations is achieved through a transfer mechanism (not shown in the figure), such as a multi-axis conveyor arm. This conveyor arm has multi-degree-of-freedom motion capabilities and can be flexibly adjusted according to the size and shape of the workpiece, ensuring the stability of the workpiece during transfer. The power source for the conveyor arm is a servo motor, which achieves smooth transmission through a high-precision reducer, ensuring the positioning accuracy of the workpiece during transfer.

[0028] At the shaping and pre-processing station 2, the device is equipped with a high-precision positioning fixture. Its internal cavity is CNC-machined to perfectly match the contour of the die-cast part. The bottom of the positioning fixture's cavity is equipped with a photoelectric sensor to detect whether the workpiece is in place, and a negative pressure hole connected to an external air compressor. The opening and closing of the negative pressure is controlled by a solenoid valve. When the workpiece enters this station, the external air compressor starts, and the negative pressure hole generates suction force, firmly fixing the workpiece to the positioning fixture. The downward pressure drive assembly directly above uses a servo cylinder, with a forming punch fixed to its output end. The forming punch is made of high-speed steel, with a surface carburized and hardened to a hardness of HRC60-65, ensuring wear resistance and impact resistance during the cutting process.

[0029] The forming punch is precisely fitted to the feature surfaces of the die-cast part. Through the vertical movement of the downward drive assembly, the workpiece undergoes preliminary shaping. In practical applications, the stroke of the downward drive assembly can be adjusted according to the workpiece height, with a stroke range of 0-150mm and a repeatability of ±0.02mm. When the punch contacts the workpiece surface, the hydraulic cylinder slowly presses down at a speed of 50mm / s until the preset pressure value (typically 15-20kN) is reached. This pressure is maintained for 3-5 seconds before retracting, completing the preliminary shaping process.

[0030] After entering the multi-dimensional cutting station 3, the workpiece is first fixed by the central positioning module 301. The supporting surface of this module is made of cemented carbide material and is shaped by wire cutting to perfectly match the bottom contour of the workpiece, ensuring the stability of the workpiece during the cutting process. The top pressing execution assembly 302 is connected to the machine body 1 via a gantry frame. At the same time, the axial pressure module 303 inside the top pressing execution assembly 302 has a built-in high-precision pressure sensor with a range of 0-50kN and a resolution of up to 0.1kN, which can monitor the applied pressure in real time and make feedback adjustments through the PLC control system.

[0031] The end cutter 304 of the top press actuator 302 is made of integral tungsten steel, and its cutting edge is machined by wire cutting, with its distribution pattern perfectly corresponding to the geometry of the slag pocket on the top surface of the workpiece. The sharpness of the end cutter 304's cutting edge is ensured through a grinding process, guaranteeing smoothness and precision during the cutting process. In actual machining, the axial pressure module 303 presses down vertically at a speed of 30 mm / s, and the end cutter 304 cuts into the slag pocket area on the top surface of the workpiece, removing excess material. The pressure sensor monitors the cutting force in real time. When the cutting force exceeds a preset threshold (e.g., 18 kN), the system automatically adjusts the downward pressure to prevent workpiece deformation or tool damage.

[0032] The side-cutting mechanism consists of a horizontal feed slide 305 and a composite cutting unit. The horizontal feed slide adopts a linear guide pair structure, with the guide rail material being cold-rolled steel and surface hardened, achieving a straightness error of less than 0.02mm. The horizontal feed slide 305 is connected to a cylinder with a stroke of 200mm, and its reciprocating motion is controlled by a solenoid valve. The composite cutting unit is mounted on the horizontal feed slide 305 and consists of a flat cutting tool 306 and a side cutting tool 307. The flat cutting tool 306 is made of cemented carbide, and its cutting edge is precision ground parallel to the workpiece parting surface, used to remove burrs at the parting surface. The cutting edge of the side cutting tool 307 is perpendicular to the extension direction of the workpiece sidewall, and its sharpness is ensured through a grinding process, used to remove excess slag from the sidewall.

[0033] The cutting tool in the composite cutting unit features a stepped cutting edge design, forming a combined primary and secondary cutting edge structure. This design effectively disperses cutting forces during the cutting process, improving cutting stability and reducing the risk of tool chip adhesion. In actual machining, the horizontal feed slide 305 drives the composite cutting unit to reciprocate in a straight line at a speed of 100 mm / s, with the tool cutting into the workpiece sidewall at multiple angles. The depth of cut can be adjusted according to the workpiece size and material properties, typically ranging from 0.5 to 2.0 mm.

[0034] After multi-dimensional cutting, the workpiece enters the re-shaping and finishing station 4 via a multi-axis conveyor arm. The positioning fixture at this station is similar to that at the pre-forming station 2, but with higher precision, achieving a cavity surface roughness of Ra0.8μm to ensure accurate positioning of the workpiece during finishing. The downward drive assembly also uses a servo cylinder, but with higher control precision and a repeatability of ±0.01mm. The forming punch uses the same material and processing technology as the pre-processing station, but a nano-level TiAlN coating is added to its surface to further improve wear resistance and anti-sticking properties.

[0035] In some embodiments, when the workpiece requires hole machining, a punch is also fixedly connected to the output end of the downward drive assembly of the reshaping and finishing station 4. The punch is made of integral tungsten steel, and the sharpness of the cutting edge is ensured through a grinding process. The cutting edge angle is 6°±0.5° at the front and 10°±0.5° at the back. The diameter of the punch is precisely matched with the hole size of the workpiece. Through the vertical movement of the downward drive assembly, the burrs in the hole are punched away. During the punching process, the hydraulic cylinder presses down at a speed of 30mm / s until the punch completely penetrates the burrs. The pressure is maintained for 2 seconds before retracting to ensure the smoothness and accuracy of the hole.

[0036] To improve the cleanliness and environmental friendliness of the equipment, a waste collection trough is designed below the multi-dimensional cutting station 3. The collection trough is made of stainless steel with a brushed surface, providing excellent corrosion resistance. The trough is tilted at a 15° angle to ensure that waste can slide smoothly into the collection box.

[0037] The entire process of the device is as follows: The die-cast part first enters the forming pre-treatment station 2 via a multi-axis conveyor arm. The positioning fixture fixes the workpiece by negative pressure adsorption, and the downward driving component drives the forming punch to perform preliminary shaping and remove surface burrs. Subsequently, the workpiece is conveyed to the multi-dimensional cutting station 3. The central positioning module 301 fixes the workpiece, the top pressing execution component 302 performs pressing treatment on the top surface, and the side cutting mechanism drives the composite cutting unit to perform multi-angle cutting on the side wall through the horizontal feed slide 305. Finally, the workpiece enters the re-forming and finishing station for final finishing treatment to ensure dimensional accuracy and surface quality. If the workpiece requires holes, the punching punch removes the burrs inside the holes. Waste generated during the cutting process is collected uniformly through the chip guide groove and waste collection groove for subsequent processing.

[0038] Through the above design, this device can efficiently complete the slag removal and finishing of die-cast parts, significantly improving production efficiency and workpiece quality. In the automotive parts manufacturing industry, this device can increase the efficiency of traditional manual slag removal by 3-5 times, while optimizing the surface roughness from Ra3.2μm to below Ra1.6μm. In practical applications, the automated design of the device reduces manual intervention and labor intensity, while achieving a green and efficient production mode through precise cutting control and a waste collection system. For die-cast parts of different specifications, only the corresponding positioning fixtures and cutting tools need to be changed to quickly adapt to new processing requirements, demonstrating good versatility and expandability.

[0039] While exemplary embodiments of this disclosure have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this disclosure without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this disclosure as defined by the claims. This disclosure is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. An automatic slag removal device for die-cast parts, characterized in that, It includes the machine body, a shaping pre-processing station, a multi-dimensional cutting station and a re-shaping and finishing station arranged sequentially along the longitudinal axis of the machine body, and the workpieces are transferred between each station through a conveying mechanism. Both the pre-forming station and the re-forming finishing station are equipped with positioning fixtures with workpiece contour matching cavities, and a pressing drive assembly is arranged directly above the positioning fixtures. The output end of the pressing drive assembly is fixedly connected to a forming punch that matches the feature surface of the workpiece. The multi-dimensional cutting station includes a central positioning module, lateral cutting mechanisms symmetrically distributed on both sides of the central positioning module, and a top pressing execution component located above the central positioning module. The central positioning module has a support surface that matches the bottom contour of the workpiece. The top pressing execution component includes an axial pressing module and a vertical blade rigidly connected to it. The cutting edge distribution of the vertical blade corresponds to the slag pack shape on the top surface of the workpiece.

2. The automatic slag removal device for die castings as described in claim 1, characterized in that: The lateral cutting mechanism includes a horizontal feed slide and a composite cutting unit mounted thereon. The composite cutting unit consists of a flat cutting tool and an axially arranged side cutting tool, wherein the cutting edge plane of the flat cutting tool is parallel to the workpiece parting surface, and the cutting edge direction of the side cutting tool is perpendicular to the extension direction of the workpiece sidewall. The horizontal feed slide is connected to a cylinder to realize the reciprocating linear motion of the composite cutting unit.

3. The automatic slag removal device for die castings as described in claim 1, characterized in that: The top press execution assembly is connected to the machine body via a gantry frame, and its axial pressure module has a built-in pressure sensor.

4. The automatic slag removal device for die-cast parts as described in claim 1, characterized in that, When there are holes at the workstation, a punching punch is also fixedly connected to the output end of the pressure drive component at the reshaping and finishing workstation.

5. The automatic slag removal device for die-cast parts as described in claim 1, characterized in that, The positioning fixture of the shaping and pretreatment station has a photoelectric sensor for detecting whether the station is in place and a negative pressure hole connected to an external air compressor, which clamps the workpiece by negative pressure.

6. The automatic slag removal device for die castings as described in claim 2, characterized in that, The composite cutting unit's flat cutting tool and side cutting tool form a main and secondary cutting edge composite structure through a stepped cutting edge design.

7. The automatic slag removal device for die-cast parts as described in claim 1, characterized in that, The machine body is designed with a waste collection tank below the multi-dimensional cutting station.

8. The automatic slag removal device for die castings as described in claim 2, characterized in that, The composite cutting unit is detachably mounted on the horizontal feed slide.

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