A cavity polishing device for manufacturing a die-casting mold
The grinding device, which combines X-axis and Y-axis linear motors with components such as wire brush rollers, air jets, and high-pressure air guns, enables automated grinding and debris removal of the inner walls of die-casting mold cavities and channels. This solves the problem of metal debris residue and improves mold processing accuracy and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING BORUN MOLD CO LTD
- Filing Date
- 2026-06-01
- Publication Date
- 2026-08-04
AI Technical Summary
In the current die-casting mold manufacturing process, metal debris is difficult to remove during the grinding of the inner walls of the cavity and channel, leading to mold wear, product defects, and production instability issues.
The X-axis linear motor and Y-axis linear motor work together to achieve precise adjustment of the grinding position; combined with components such as wire brush roller, air jet, vacuum machine and high-pressure air gun, it realizes automated grinding, debris removal and inspection in one integrated process.
It improves the quality of mold grinding and production efficiency, ensures the cleanliness of the inner wall of the channel, avoids debris residue, and increases the product qualification rate and mold life.
Smart Images
Figure CN122500600A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of die casting mold manufacturing technology, and in particular to a cavity grinding device for die casting mold manufacturing. Background Technology
[0002] In the die casting mold manufacturing and repair process, the grinding of the inner walls of the cavity and channel is a key process to ensure the smoothness of the mold forming surface, dimensional accuracy and service life. Its processing quality directly determines the surface quality, contour accuracy and demolding smoothness of the die casting product, which is of great significance to improving product yield and mold life. Current mold channel grinding operations mostly employ handheld or semi-automatic grinding devices. These devices use high-speed rotating grinding heads and polishing wheels to grind and polish mold cavities, deep holes, blind holes, and complex inner hole walls to reduce surface roughness and eliminate tool marks and mold parting marks. However, the grinding process generates a large amount of metal debris, which easily remains on the inner wall of the mold channel and cannot be removed in time. On the one hand, the channels are mostly deep holes, blind holes, stepped holes, or small-diameter structures with narrow spaces and tortuous paths. Under the action of centrifugal force and friction, debris easily adheres to and accumulates in the pits, steps, and bottom of the channel walls, making it difficult to remove the debris by natural shedding or simple blowing. On the other hand, the high-speed rotating grinding head further squeezes and embeds the debris into the microscopic unevenness of the channel inner wall, forming a firmly attached debris layer that is difficult to completely remove by conventional blowing and wiping methods. Residual metal shavings not only exacerbate abnormal wear between the grinding head and the hole wall during subsequent grinding, reducing grinding accuracy and efficiency, but also cause scratches on the mold cavity and out-of-tolerance hole dimensions when impacted and squeezed by high-pressure molten metal during mold closing and die casting. This leads to defects such as surface flaws, porosity, dimensional deviations, and mold jamming in die-cast products, significantly reducing product qualification rate and production stability, while also increasing the cost of subsequent mold cleaning and maintenance. Therefore, improvements are needed to address these issues. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a cavity grinding device for die casting mold manufacturing.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a cavity grinding device for die casting mold manufacturing, comprising a base, a processing table fixedly connected to the top surface of the base, a first linear motor provided on one side of the base, a guide rod provided on the other side of the base, a gantry fixedly connected to the mover of the first linear motor, the side of the gantry away from the first linear motor being sleeved on the guide rod, an X-axis linear motor mounted on one side of the gantry, a Y-axis linear motor mounted on the mover of the X-axis linear motor, a C-shaped plate fixedly connected to the mover of the Y-axis linear motor, a first motor mounted in the middle of the top surface of the C-shaped plate, a sleeve fixedly connected between the opposite surfaces of the C-shaped plate, a detection component for dust removal detection of the processing hole screwed onto the sleeve, the output shaft of the first motor passing through the sleeve and fixedly connected to a wire brush roller, a dust blowing component for blowing away impurities on the surface of the die casting mold mounted on the other side of the upper end of the gantry, and a collection component for collecting debris provided at the end of the base near the dust blowing component.
[0005] Preferably, the detection component includes an external thread formed at the lower end of the outer wall of the sleeve, an air jet tube screwed onto the external thread, a cap screwed onto the bottom end of the air jet tube, a plurality of internal threaded holes in a circular array on the bottom surface of the cap, a conical nozzle screwed into the internal threaded holes, a vacuum machine mounted on one side of the sleeve on the horizontal plane of the C-shaped plate, an air outlet pipe connected to the output end of the vacuum machine, one end of the air outlet pipe being detachably connected to a point on the top inner surface of the sleeve, and a detection camera mounted on the other side of the sleeve on the horizontal plane of the C-shaped plate, the lens of the detection camera penetrating the bottom end of the C-shaped plate.
[0006] Preferably, the dust blowing assembly includes a second linear motor mounted on the upper end of the gantry frame, a hinge seat fixedly connected to the mover of the second linear motor, a high-pressure air gun fixedly connected to the rotating shaft of the hinge seat, and a second motor coaxially fixedly connected to the hinge shaft of the hinge seat on one outer wall of the hinge seat.
[0007] Preferably, the collection assembly includes a baffle fixed to the periphery of the top surface of the base. The baffle is C-shaped when viewed from above. An air inlet pipe is fixed to one end of the top surface of the base. A slot is opened at the end of the base near the air inlet pipe. One end of the air inlet pipe is connected to the top surface inside the slot. A chip collection box is inserted into the slot. Multiple axial flow fans are installed on the outward-facing end of the chip collection box.
[0008] Preferably, one end of the axial flow fan extends into the inner wall of the chip collection box, and a filter cloth is fixedly connected to the end of the axial flow fan located on the inner wall of the chip collection box.
[0009] Preferably, two support frames are symmetrically arranged on both sides of the top surface of the enclosure, and observation cameras are installed on the support frames.
[0010] Preferably, a handle is fixedly connected to the middle of the outward-facing end of the chip collection box.
[0011] Compared with the prior art, the beneficial effects of this invention are as follows: The combination of an X-axis linear motor and a Y-axis linear motor facilitates precise adjustment of the grinding position, improving grinding positioning accuracy and enabling automated grinding of the mold cavity and inner wall of the channel; the combination of the first motor and the wire brush roller facilitates efficient grinding of the cavity and inner wall of the channel, improving grinding smoothness and ensuring mold processing accuracy; the combination of the air jet, conical nozzle, vacuum machine, and air outlet pipe facilitates timely removal of metal debris generated during grinding, improving debris cleaning effect and thus enabling… This system effectively prevents debris from remaining on the inner wall of the channel. The use of a detection camera allows for direct observation of the inner wall's condition after grinding, improving the accuracy of grinding judgment and enabling precise confirmation of whether the inner wall of the channel has been properly ground. The combination of a high-pressure air gun with a barrier, axial flow fan, and chip collection box facilitates the blowing and centralized collection of surface debris, improving chip collection efficiency and enabling comprehensive cleaning of grinding debris. Ultimately, this solves the problem of existing devices leaving debris on the inner wall of the channel after grinding, making it difficult to accurately confirm whether grinding has been completed, thus improving mold grinding quality, production efficiency, and product qualification rate. Attached Figure Description
[0012] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this invention; Figure 2 This is a second-view schematic diagram of the overall structure proposed in this invention; Figure 3 This is a schematic diagram of the overall structure for removing the jet tube proposed in this invention; Figure 4 This is a schematic diagram of the overall structure of the chip collection box proposed in this invention; Figure 5 This is a schematic diagram of the overall structure of the detection component proposed in this invention; Figure 6 This is a schematic cross-sectional view of the jet tube structure proposed in this invention; Figure 7 This is a schematic diagram of the overall structure of the observation camera proposed in this invention.
[0013] The components in the diagram are numbered as follows: 1. Base; 2. Gantry; 3. X-axis linear motor; 4. Y-axis linear motor; 5. C-shaped plate; 6. First motor; 7. Sleeve; 8. Wire brush roller; 9. Air jet; 10. Conical nozzle; 11. Air outlet pipe; 12. Detection camera; 13. Hinge seat; 14. High-pressure air gun; 15. Enclosure; 16. Air inlet pipe; 17. Chip collection box; 18. Axial flow fan; 19. Filter cloth; 20. Support frame; 21. Observation camera. Detailed Implementation
[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0015] Example 1: See Figures 1 to 7This invention discloses a cavity grinding device for die-casting mold manufacturing, comprising a base 1, a processing table fixedly connected to the top surface of the base 1, a first linear motor mounted on one side of the base 1, a guide rod mounted on the other side of the base 1, a gantry 2 fixedly connected to the mover of the first linear motor, the side of the gantry 2 away from the first linear motor being sleeved on the guide rod, an X-axis linear motor 3 mounted on one side of the gantry 2, a Y-axis linear motor 4 mounted on the mover of the X-axis linear motor 3, a C-shaped plate 5 fixedly connected to the mover of the Y-axis linear motor 4, a first motor 6 mounted in the middle of the top surface of the C-shaped plate 5, a sleeve 7 fixedly connected between the opposite surfaces of the C-shaped plate 5, a detection component for dust removal detection of the processed hole screwed onto the sleeve 7, and a wire brush roller 8 fixedly connected to the output shaft of the first motor 6 passing through the sleeve 7. A dust-blowing assembly for removing impurities from the surface of the die-casting mold is installed on the other side of the upper end of the gantry 2. A collection assembly for collecting debris is provided at the end of the base 1 near the dust-blowing assembly. The first linear motor, X-axis linear motor 3, and Y-axis linear motor 4 are all MLS series linear motors; the first motor 6 is an HG series servo motor; the base 1 is made of cast iron, which improves the overall stability and rigidity of the device. Through the cooperation of the first linear motor, X-axis linear motor 3, Y-axis linear motor 4, gantry 2, and C-shaped plate 5, the grinding mechanism can move and position precisely in three-dimensional space, ensuring accurate and reliable grinding position. The above structural cooperation constitutes the basic framework of the device, providing a basis for subsequent grinding, dust removal, inspection, and collection functions. Provides stable support; the detection assembly includes an external thread on the lower end of the outer wall of the sleeve 7, with an air jet 9 screwed onto the external thread. A cap is screwed onto the bottom end of the air jet 9, and multiple internal threaded holes are arranged in a ring on the bottom surface of the cap. Conical nozzles 10 are screwed into the internal threaded holes. A vacuum machine is installed on one side of the sleeve 7 at the horizontal plane of the C-shaped plate 5. An air outlet pipe 11 is plugged into the output end of the vacuum machine. One end of the air outlet pipe 11 is detachably connected to a point on the inner top surface of the sleeve 7. A detection camera 12 is installed on the other side of the sleeve 7 at the horizontal plane of the C-shaped plate 5, with the lens of the detection camera 12 penetrating the bottom end of the C-shaped plate 5. The vacuum machine uses an SMC-ZH series vacuum generator; the detection camera 12 uses an MV-CA013; the air jet 9 is made of aluminum alloy. 9. Lightweight and with good airflow conductivity; through the cooperation of the jet tube 9, the conical nozzle 10, the vacuum machine, the air outlet pipe 11, and the detection camera 12, it is possible to blow air to remove debris from the inner wall of the hole after grinding, and to visually judge the grinding quality through the detection camera 12, avoiding the influence of debris residue on the detection results. The above structure realizes the integrated function of dust removal and detection after grinding; the dust blowing assembly includes a second linear motor installed on the upper end of the gantry 2, a hinge seat 13 fixedly connected to the mover of the second linear motor, a high-pressure air gun 14 fixedly connected to the rotating shaft of the hinge seat 13, and a second motor coaxially fixedly connected to the hinge shaft of the hinge seat 13 on one side of the outer wall of the hinge seat 13; the second linear motor adopts the MLS series linear motor; the second motor adopts the HG series servo motor;The high-pressure air gun 14 uses a combination of a variable frequency fan and an air jet pipe. This combination allows for flexible adjustment of the air jet pressure to adapt to different debris blowing needs. Through the cooperation of the second linear motor, the hinge seat 13, and the high-pressure air gun 14, the lateral movement and angle tilt adjustment of the high-pressure air gun 14 can be achieved, enabling comprehensive cleaning of debris on the mold surface and expanding the cleaning range. This structural combination achieves multi-angle, wide-area dust blowing functionality on the mold surface.
[0016] Example 2: The technical solution is basically the same as that of Example 1, except that, as Figures 2 to 5 , Figure 7 As shown, the collection assembly includes a baffle 15 fixed to the periphery of the top surface of the base 1. The baffle 15 is C-shaped when viewed from above. An air inlet pipe 16 is fixed to one end of the top surface of the base 1. A slot is opened at the end of the base 1 near the air inlet pipe 16. One end of the air inlet pipe 16 connects to the top surface of the slot. A chip collection box 17 is inserted into the slot. Multiple axial flow fans 18 are installed on the outward-facing end of the chip collection box 17. The baffle 15 is made of acrylic material, which is transparent for easy observation and has high strength. The baffle 15, the air inlet pipe 16 and the chip collection box 17 are connected to the base 1. 7. The axial flow fan 18, in conjunction with the dust collector 17, can block flying debris and draw it into the dust collection box 17 through negative pressure for centralized collection, preventing the debris from spreading and polluting the environment. This structural combination achieves the centralized collection and protection of grinding debris. One end of the axial flow fan 18 extends into the inner wall of the dust collection box 17, and a filter cloth 19 is fixedly attached to the end of the axial flow fan 18 located on the inner wall of the dust collection box 17. The filter cloth 19 is made of polyester non-woven fabric, which is breathable and has a good debris interception effect. Through the axial flow fan 18 and... The filter cloth 19 effectively intercepts debris from entering the axial flow fan 18, protecting the fan's normal operation and ensuring stable negative pressure suction. This structural combination improves the service life and reliability of the collection components. Two symmetrical support frames 20 are provided on both sides of the top surface of the enclosure 15, with observation cameras 21 mounted on them. The observation camera 21 is an MV-CA003. The support frames 20 are made of aluminum alloy, making them lightweight and resistant to deformation. The combination of the support frames 20 and the observation cameras 21 allows for overall external observation of the mold grinding status, enabling global monitoring and facilitating operators' understanding of the processing progress. This structural combination enhances the overall visual inspection function of the device. A handle is fixed to the center of the outward-facing end of the chip collection box 17. The handle is made of ABS plastic, providing a comfortable and strong grip. The combination of the chip collection box 17 and the handle allows operators to easily pull out the chip collection box 17 for cleaning, improving the ease of use of the device. This structural combination optimizes the disassembly and maintenance experience of the collection components.
[0017] Working principle: In this embodiment, the present invention also proposes a method for using a cavity grinding device for die casting mold manufacturing, including the following steps: Step 1: In the initial stage of equipment use, the holes on the die-casting mold that do not require grinding are first sealed with a thin film to prevent debris generated during subsequent grinding from entering the non-processing channels and causing blockage or contamination. Then, all electrical components are electrically connected to the external control equipment via wires to facilitate operation during subsequent processing. Subsequently, the die-casting mold to be processed is placed stably on the processing table of machine base 1 to ensure accurate mold positioning and stable placement, laying the foundation for subsequent grinding operations and ensuring that the mold does not shift during processing. Step 2: Once the preparations are complete, start the first linear motor on one side of the machine base 1. The mover of the first linear motor drives the gantry 2 to move smoothly along the guide rod. At the same time, the X-axis linear motor 3 on one side of the gantry 2 and the Y-axis linear motor 4 on the mover of the X-axis linear motor 3 work together to precisely adjust the three-dimensional position of the C-shaped plate 5 fixed on the mover of the Y-axis linear motor 4. This ensures that the wire brush roller 8 fixed to the output shaft of the first motor 6 on the C-shaped plate 5 is precisely aligned with the mold cavity and the grinding channel, ensuring that the grinding position is accurate and meets the processing accuracy requirements. Step 3: Then start the first motor 6 in the middle of the top surface of the C-shaped plate 5. The first motor 6 drives the wire brush roller 8 to rotate at high speed to grind the mold cavity and the inner wall of the channel. During the grinding process, the vacuum machine located on the side of the sleeve 7 on the horizontal plane of the C-shaped plate 5 is started at the same time. The vacuum machine delivers airflow into the sleeve 7 through the air outlet pipe 11 connected to the output end. The airflow is sprayed out through the conical nozzle 10 on the bottom cover of the air jet cylinder 9 screwed to the lower end of the sleeve 7, which blows away the metal debris generated by grinding away from the inner wall of the channel in time to avoid debris residue affecting the grinding effect. Step 4: After the grinding operation is completed, start the detection camera 12 located on the other side of the sleeve 7 on the horizontal plane of the C-shaped plate 5. The lens of the detection camera 12 penetrates through the bottom of the C-shaped plate 5 to capture the grinding area in real time and accurately provide feedback on the grinding effect. This makes it easy for operators to confirm the degree of grinding without blindly judging by the naked eye. At the same time, start the second linear motor and the second motor in the dust blowing assembly at the upper end of the gantry 2. The second motor drives the rotating shaft of the hinge seat 13 to rotate, thereby adjusting the tilt angle of the high-pressure air gun 14 fixed on the hinge seat 13. The second linear motor drives the hinge seat 13 and the high-pressure air gun 14 to slide laterally to thoroughly blow away the debris remaining on the surface of the mold. Step 5: While the high-pressure air gun 14 is blowing away the debris on the mold surface, start the axial flow fan 18 on the chip collection box 17 near the air inlet pipe 16 of the machine base 1. The axial flow fan 18 generates negative pressure, which, together with the C-shaped baffle 15 on the top side of the machine base 1, blocks the splashing debris and draws the blown debris into the chip collection box 17 through the air inlet pipe 16 for centralized collection. The filter cloth 19 fixed to the end of the axial flow fan 18 that extends into the inner wall of the chip collection box 17 intercepts and filters the debris, preventing it from entering the axial flow fan 18 and affecting its normal operation. After the debris is collected, turn off all equipment. At this point, the entire grinding operation is complete. The operator can use the handle on the chip collection box 17 to pull out the chip collection box 17 to clean the debris.
[0018] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A cavity grinding device for die casting mold manufacturing, comprising a base (1), a processing table fixedly connected to the top surface of the base (1), a first linear motor provided on one side of the base (1), a guide rod provided on the other side of the base (1), a gantry frame (2) fixedly connected to the mover of the first linear motor, and the side of the gantry frame (2) away from the first linear motor sleeved on the guide rod, characterized in that: An X-axis linear motor (3) is installed on one side of the gantry (2). A Y-axis linear motor (4) is installed on the mover of the X-axis linear motor (3). A C-shaped plate (5) is fixedly connected to the mover of the Y-axis linear motor (4). A first motor (6) is installed in the middle of the top surface of the C-shaped plate (5). A sleeve (7) is fixedly connected between the opposite surfaces of the C-shaped plate (5). A detection component for dust removal detection of the machining hole is screwed onto the sleeve (7). The output shaft of the first motor (6) passes through the sleeve (7) and is fixedly connected to a wire brush roller (8). A dust blowing component for blowing off impurities on the surface of the die-casting mold is installed on the other side of the upper end of the gantry (2). A collection component for collecting debris is provided at the end of the base (1) near the dust blowing component.
2. The cavity grinding device for die casting mold manufacturing according to claim 1, characterized in that: The detection assembly includes an external thread on the lower end of the outer wall of the sleeve (7), a jet tube (9) is screwed onto the external thread, a cap is screwed onto the bottom end of the jet tube (9), a plurality of internal thread holes are arranged in an annular array on the bottom surface of the cap, and a conical nozzle (10) is screwed into the internal thread holes. A vacuum machine is installed on the horizontal plane of the C-shaped plate (5) on one side of the sleeve (7), and an air outlet pipe (11) is inserted and connected to the output end of the vacuum machine. One end of the air outlet pipe (11) is detachably connected to a point on the inner top surface of the sleeve (7). A detection camera (12) is installed on the horizontal plane of the C-shaped plate (5) on the other side of the sleeve (7), and the lens of the detection camera (12) penetrates the bottom end of the C-shaped plate (5).
3. The cavity grinding device for die casting mold manufacturing according to claim 1, characterized in that: The dust blowing assembly includes a second linear motor mounted on the upper end of the gantry (2), a hinge seat (13) fixedly connected to the mover of the second linear motor, a high-pressure air gun (14) fixedly connected to the rotating shaft of the hinge seat (13), and a second motor coaxially fixedly connected to the hinge shaft of the hinge seat (13) on one side of the outer wall of the hinge seat (13).
4. The cavity grinding device for die casting mold manufacturing according to claim 1, characterized in that: The collection assembly includes a enclosure (15) fixed to the periphery of the top surface of the base (1). The enclosure (15) is C-shaped when viewed from above. An air inlet pipe (16) is fixed to one end of the top surface of the base (1). A slot is opened at one end of the base (1) near the air inlet pipe (16). One end of the air inlet pipe (16) is connected to the top surface inside the slot. A chip collection box (17) is inserted into the slot. Multiple axial flow fans (18) are installed on the outward-facing end face of the chip collection box (17).
5. The cavity grinding device for die casting mold manufacturing according to claim 4, characterized in that: One end of the axial flow fan (18) extends into the inner wall of the chip collection box (17), and a filter cloth (19) is fixed to one end of the axial flow fan (18) located on the inner wall of the chip collection box (17).
6. The cavity grinding device for die casting mold manufacturing according to claim 4, characterized in that: The top surface of the enclosure (15) is symmetrically provided with two support frames (20), and an observation camera (21) is installed on the support frame (20).
7. The cavity grinding device for die casting mold manufacturing according to claim 4, characterized in that: A handle is fixed to the middle of the outward-facing end of the chip collection box (17).