Metal engraving machine and engraving method for cast copper sculpture production

Abstract

The invention relates to the technical field of metal carving machines, and provides a metal carving machine for cast copper sculpture production and a carving method.The metal carving machine for cast copper sculpture production comprises a machine body, a chuck, a carving head and a spraying pipe; the copper cutting machine further comprises a closed machining bin, a high-pressure purging pipe, a cleaning pipe, a waste receiving groove, a grinding and crushing mechanism and a solid-liquid separation mechanism, the interior of the closed machining bin is an extensible space, and the waste receiving groove is fixedly installed on the machine body, located below the clamping position of the chuck and used for receiving a lubricating agent, cleaning liquid and copper cuttings. The grinding and crushing mechanism communicates with the bottom of the waste receiving tank and is used for grinding and crushing large copper cuttings, and the solid-liquid separation mechanism communicates with the grinding and crushing mechanism and is used for separating the crushed copper cuttings from a lubricant. By means of the technical scheme, the technical problems that in the prior art, residual cooling liquid obstructs subsequent machining of the cast copper sculpture, and dissipation and recovery of copper cuttings are difficult are solved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of metal engraving machine technology, specifically to a metal engraving machine and engraving method for producing bronze sculptures. Background Technology

[0002] In the production process of bronze sculpture, surface finishing and engraving are key steps in giving the work artistic vitality. With the exploratory application of CNC technology in this field, a long-neglected but crucial process bottleneck has become increasingly prominent: the effective and clean removal of copper shavings and lubricant generated during processing. This issue directly affects the processing quality, equipment stability, working environment, and even the economic and artistic value of the final artwork. Traditional bronze sculpture finishing involves craftsmen using simple methods such as compressed air blowing and brush cleaning to remove shavings. The drawbacks of this method are tolerable in low-intensity, intermittent manual operations. However, when switching to high-efficiency, continuous CNC engraving, the unique processing characteristics of copper make the shaving removal challenge extremely severe.

[0003] Copper, especially commonly used red copper and brass, is relatively soft and highly ductile. During the engraving process, it easily produces long, curled, and resilient shavings rather than easily detached fragments. These shavings can easily become entangled on rotating cutting tools, spindles, and even moving parts of the equipment. This can not only cause tool damage or breakage but also scratch the processed surface due to pulling, resulting in defects that are difficult to repair. At the same time, the fine copper dust generated by high-speed cutting will adhere to every corner of the workpiece and machine tool. If it seeps into the complex textures of the sculpture or into the guide rails and lead screws of the equipment, it will accelerate mechanical wear and seriously affect subsequent grinding, polishing, and chemical coloring treatments.

[0004] Traditional metal engraving machines or machining centers on the market have cooling and chip removal systems designed for large-scale, standardized processing of materials such as steel and aluminum. They typically use high-flow-rate coolant solutions. For bronze sculptures that require complex surface treatments (such as hot coloring or chemical aging), coolant residue is a serious source of pollution and must be thoroughly cleaned. Furthermore, the processing area of ​​traditional engraving machines is generally open. Even with coolant and external dust extraction equipment, the large cutting and centrifugal forces generated during engraving still cause a large amount of dust to escape into the working environment. Due to the use of coolant, a large amount of copper chips are mixed in with the coolant, which is difficult to recycle and wastes copper resources. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides a metal engraving machine and engraving method for the production of cast bronze sculptures, which solves the technical problems in the related technology where the residue of coolant hinders the subsequent processing of cast bronze sculptures and the difficulty in the dispersion and recycling of copper shavings.

[0006] According to one aspect, at least one embodiment of the present invention provides a metal engraving machine for bronze sculpture production, comprising a machine body, a chuck for holding workpieces, an engraving head for engraving, and a spray pipe for spraying lubricant onto the engraving position. The engraving head is movably mounted on the machine body via a gantry, a sliding seat, and a lifting seat. The machine also includes: A closed processing chamber, wherein the clamping area of ​​the chuck, the engraving head, and the outlet of the spray pipe are all located inside the closed processing chamber, the interior of the closed processing chamber is an expandable space, a portion of the closed processing chamber can move with the engraving head, the closed processing chamber has an opening for loading and unloading workpieces, and the opening is equipped with an opening and closing door, the closed processing chamber comprising: A fixed frame is fixedly installed on the machine body, the chuck is rotatably installed on the fixed frame, the take-up and put-out port is provided on the fixed frame, and an opening and closing door is provided at the take-up and put-out port; A movable frame, which is fixedly installed on the gantry frame; A follower frame is fixedly installed on the lifting seat and moves with the engraving head. Foldable telescopic frames are connected between the follower frame, the fixed frame, and the moving frame. A high-pressure purge pipe is installed on the enclosed processing chamber and has an outlet for blowing high-pressure gas to the engraving position; A cleaning tube is installed on the enclosed processing chamber and has an outlet for spraying cleaning fluid to the engraving position; A waste receiving trough is fixedly installed on the machine body and located below the clamping position of the chuck, for receiving lubricant, cleaning fluid and copper shavings; A crushing and grinding mechanism, connected to the bottom of the waste receiving trough, is used to crush and grind large copper shavings. The crushing and grinding mechanism includes: A crushing box, which is connected to the bottom of the waste receiving trough via a feeding channel; The crushing rollers are provided in two, and are rotatably disposed inside the crushing box. The two crushing rollers rotate relative to each other, and a crushing space for crushing copper shavings is formed between the two crushing rollers. The outlet of the feeding channel is located above the crushing space. A solid-liquid separation mechanism, connected to the crushing mechanism, is used for centrifugal separation of crushed copper shavings and lubricant. The solid-liquid separation mechanism includes: A separation cylinder, with a drain pipe connected to its lower part; The drum screen is rotatably disposed inside the separation cylinder. The bottom of the crushing box is connected to a material discharge channel. The end of the drum screen is rotatably connected to the outlet of the material discharge channel. The end of the drum screen away from the material discharge channel is open and connected to the outside. The inside of the drum screen is provided with multiple blades for temporarily blocking copper shavings. The multiple blades form a spiral shape.

[0007] To reduce copper shavings clogging the drum screen, a clearing component is also included. This component pushes material out of the drum screen's mesh to clear the screen. The clearing component includes: A dredging roller is rotatably disposed inside the separation cylinder, and a brush that can be inserted into the mesh of the drum screen is fixedly connected to the outside of the dredging roller.

[0008] To improve the solid-liquid separation effect, the inside of the drum screen is equipped with a hot air pipe, which has an air outlet for blowing hot air into the drum screen.

[0009] To reduce the deformation of the crushing roller, the crushing roller is rotatably installed inside the crushing box via a rotating shaft. The rotating shaft and the crushing roller are hollow structures and are interconnected. The rotating shaft is rotatably connected to a liquid delivery seat, which is connected to the spray pipe.

[0010] To facilitate complete collection of copper shavings, both the fixed frame and the movable frame are equipped with shaving removal pipes, which have nozzles for blowing gas into the waste material carrying tank.

[0011] To remove residual cleaning fluid from the surface of the cast bronze sculpture, the hot air duct and the chip removal blowpipe are connected to blow hot air into the interior of the enclosed processing chamber.

[0012] A carving method for producing bronze sculptures, using the aforementioned metal carving machine for producing bronze sculptures, includes the following steps: S1. Loading: Open the pick-up and drop-off door, clamp the workpiece to be engraved on the chuck, and then close the pick-up and drop-off door; S2. Engraving: The gantry moves the sliding seat, lifting seat and engraving head along the longitudinal direction of the machine body. The sliding seat moves the engraving head along the lateral direction of the gantry. The lifting seat moves the engraving head up and down, allowing the engraving head to move freely and cooperate with the chuck to rotate the workpiece to be engraved. During the engraving process, the enclosed processing chamber always protects the engraving position. S3, Lubrication: During the engraving process, the lubricant is delivered to the spray pipe through the rolling roller and sprayed onto the engraving position. The lubricant lubricates the engraving position and carries some copper chips into the inside of the waste material receiving tank. S4. Blowing: During the engraving process, the high-pressure blow pipe sprays high-pressure gas towards the engraving position to blow off the copper chips generated during engraving. At the same time, the chip removal blow pipe on the sealed processing chamber blows the copper chips and lubricant on the machine body into the interior of the waste receiving tank. S5. Crushing: Copper shavings and lubricant fall from the waste receiving trough into the crushing box and are in the crushing space. Two crushing rollers rotate relative to each other to crush the copper shavings. S6. Spin-drying: The crushed copper shavings and lubricant enter the interior of the drum screen. The centrifugal force generated by the rotation of the drum screen causes the lubricant to be thrown away from the drum screen and enter the interior of the separation cylinder and be discharged through the drain pipe. At the same time, the hot air pipe delivers hot air into the interior of the drum screen to assist in the drying of the copper shavings. S7. Cleaning: During the engraving process, the cleaning tube sprays cleaning liquid onto the engraved workpiece to wash off the lubricant and copper shavings on its surface. The drying tube assists in drying the workpiece. The washed-off waste is crushed and spun dry before being discharged and collected separately. S8. Unloading: Open the pick-up and drop-off door, remove the engraved workpiece, clamp the new workpiece to be engraved on the chuck, then close the pick-up and drop-off door, and repeat the above processing.

[0013] The beneficial effects of the embodiments of the present invention are as follows: 1. In this invention, the engraved workpiece and the engraving head are placed in a relatively enclosed space by a closed processing chamber, which confines the copper chips generated during engraving inside the closed processing chamber, reducing the damage to the surrounding environment caused by the escape of copper chips. The copper chips fall into the waste receiving tank under the flushing action of the lubricant. The copper chips and lubricant remaining on the workpiece and the machine body are blown into the waste receiving tank by a high-pressure blowing pipe and a chip removal blowing pipe, which facilitates the subsequent separation of copper chips and lubricant and the recycling of copper chips.

[0014] 2. In this invention, cleaning fluid is sprayed onto the workpiece through a cleaning pipe to wash off the lubricant on the workpiece surface and clean the copper shavings at the same time. Large copper shavings entering the crushing box are crushed by a crushing roller to prevent curled copper shavings from getting caught on the screen holes of the drum screen. The centrifugal force generated by the rotation of the drum screen separates the copper shavings and lubricant. At the same time, hot air is blown into the inside of the drum screen through a hot air pipe to further dry the copper shavings, thereby facilitating the subsequent recycling of the copper shavings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0016] Figure 1 This is a first-view structural schematic diagram of an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the overall structure from a second perspective in the embodiment; Figure 3 for Figure 1 A schematic diagram of the structure of the chuck, engraving head, spray pipe and enclosed processing chamber in the embodiment; Figure 4 for Figure 1 The schematic diagram of the waste receiving tank, crushing mechanism and solid-liquid separation mechanism in the embodiment; Figure 5 for Figure 1 A schematic diagram of the crushing mechanism in the embodiment; Figure 6 for Figure 1 The embodiments are schematic diagrams of the hot air duct, solid-liquid separation mechanism and unblocking component; Figure 7 for Figure 1 A schematic diagram of the structure of the chip removal blow pipe, the air outlet nozzle, and the hot air pipe in the embodiment; Figure 8 for Figure 1 The embodiment is shown in the structural diagram of the spray pipe, the rolling roller, the rotating shaft and the liquid delivery seat.

[0017] In the picture: 1. Machine body; 2. Chuck; 3. Engraving head; 4. Spray pipe; 5. Gantry frame; 6. Sliding seat; 7. Lifting seat; 8. High-pressure blow pipe; 9. Cleaning pipe; 10. Waste receiving trough; 11. Chip removal blow pipe; 12. Air outlet nozzle; 13. Hot air pipe; 101. Opening and closing door; 102. Fixed frame; 103. Moving frame; 104. Follow-up frame; 105. Folding telescopic frame; 201. Crushing box; 202. Compactor roller; 203. Motor 1; 204. Drive gear; 205. Transmission gear; 206. Baffle; 207. Scraper; 208. Rotating shaft; 209. Liquid delivery seat; 301. Separation cylinder; 302. Drum screen; 303. Drain pipe; 304. Motor II; 305. Drive frame; 306. Blades; 401. Unclogging roller; 402. Brush. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0019] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0020] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Example 1, as Figures 1 to 8The diagram illustrates a metal engraving machine for bronze sculpture production according to an embodiment of the present invention. It includes a machine body 1, a chuck 2 for holding workpieces, an engraving head 3 for engraving, and a spray pipe 4 for spraying lubricant onto the engraving position. The engraving head 3 is movably mounted on the machine body 1 via a gantry frame 5, a sliding seat 6, and a lifting seat 7. The gantry frame 5 is mounted on the machine body 1 via a screw feed mechanism and can move longitudinally along the machine body 1. The sliding seat 6 is mounted on the gantry frame 5 via a screw feed mechanism and can move laterally along the gantry frame 5. The lifting seat 7 is mounted on the machine body 1 via a screw feed mechanism. On the sliding seat 6, the lifting seat 7 can be vertically raised and lowered along the sliding seat 6. The engraving head 3 is mounted on the lifting seat 7 and can rotate. Through the movement of the gantry 5, the sliding seat 6 and the lifting seat 7, the engraving head 3 can move freely. The chuck 2 uses a three-jaw or four-jaw chuck, which can clamp the workpiece to be engraved on the chuck 2. The chuck 2 can drive the workpiece to be engraved to rotate, rotating different positions of the workpiece to the position corresponding to the engraving head 3. The freely moving engraving head 3 engraves the workpiece. It also includes a closed processing chamber, a high-pressure blowing pipe 8, a cleaning pipe 9, a waste receiving tank 10, a crushing mechanism and a solid-liquid separation mechanism.

[0025] like Figures 1 to 3 As shown, the clamping area of ​​the chuck 2, the engraving head 3, and the outlet of the spray pipe 4 are all located inside the enclosed processing chamber. The interior of the enclosed processing chamber is an expandable space, and a part of the engraving head 3 can move with it. The enclosed processing chamber has a loading and unloading port for loading and unloading workpieces, and an opening and closing door 101 is provided at the loading and unloading port. The opening and closing door 101 can be slidably or hingedly installed at the loading and unloading port. The enclosed processing chamber includes a fixed frame 102, a movable frame 103, and a follower frame 104. The fixed frame 102 is fixedly installed on the machine body 1, and the chuck 2 is rotatably installed on the fixed frame 102. The loading and unloading port is located on the fixed frame 102, and an opening and closing door 101 is provided at the loading and unloading port. The movable frame 103 is fixedly installed on the gantry frame 5, and the follower frame 104 is fixedly installed on the lifting seat 7 and moves with the engraving head 3. The main shaft that drives the engraving head 3 to rotate and the follower frame 104 rotate in coordination. Folding telescopic frames 105 are connected between the fixed frame 102 and the moving frame 103. The bottom ends of the fixed frame 102 and the moving frame 103 are close to the machine body 1. The workpiece can be clamped on the chuck 2 or removed from the chuck 2 by opening the pick-up and drop door. The moving frame 103 moves longitudinally with the gantry 5 and the engraving head 3. The follower frame 104 moves laterally and vertically with the engraving head 3. The longitudinal positions of the moving frame 103 and the follower frame 104 correspond. The folding and telescopic movement of the folding telescopic frame 105 can accommodate the movement of the follower frame 104. The fixed frame 102, the moving frame 103, the follower frame 104, the folding telescopic frame 105 and the machine body 1 together form a relatively closed space. The engraving head 3 and the workpiece are located inside the closed processing chamber. The closed processing chamber blocks the copper chips and lubricant generated during engraving, preventing the copper chips from escaping and damaging the surrounding processing environment.

[0026] The high-pressure purge pipe 8 is installed on the closed processing chamber and has an outlet for spraying high-pressure gas to the engraving position. The high-pressure purge pipe 8 is connected to an external air supply device. The external air supply device delivers high-pressure gas to the high-pressure purge pipe 8 and sprays it onto the engraving position to blow off the copper chips and lubricant generated during engraving, thereby reducing the impact of copper chips on subsequent engraving.

[0027] The cleaning pipe 9 is installed on the enclosed processing chamber and has an outlet for spraying cleaning fluid to the engraving position. The cleaning pipe 9 is connected to an external conveying device, which can be a conveying pump. The external conveying device can deliver the cleaning fluid to the cleaning pipe 9 and spray it to the engraving position to further wash off copper chips. At the same time, it washes the workpiece to remove the lubricant residue on its surface, reducing the lubricant's hindrance to subsequent processing. The cleaning fluid can be clean water. High-pressure water is used to rinse the workpiece surface to further wash off the lubricant residue and copper chips on the workpiece surface, avoiding the lubricant from contaminating the workpiece in subsequent processing.

[0028] like Figures 1 to 7 As shown, the waste receiving tank 10 is fixedly installed on the machine body 1 and located below the clamping position of the chuck 2. It is used to receive lubricant, cleaning fluid, and copper shavings. The receiving tank is located directly below the workpiece. Most of the copper shavings blown off by the high-pressure blowpipe 8 and washed off by the lubricant and cleaning fluid fall into the interior of the waste receiving tank 10. To facilitate complete collection of copper shavings, chip removal blowpipes 11 are installed on both the fixed frame 102 and the moving frame 103. The chip removal blowpipes 11 have a channel to the waste receiving tank 10. The gas outlet nozzle 12 can be equipped with an electric cylinder on the fixed frame 102 and the movable frame 103. The gas outlet nozzle 12 is connected to the chip removal blowing pipe 11 through a hose. Multiple gas outlet nozzles 12 in the fixed frame 102 or the movable frame 103 are fixedly installed at the output end of the electric cylinder. The electric cylinder can drive the gas outlet nozzle 12 to swing, expand the blowing area, and blow the copper shavings, lubricant or cleaning liquid remaining on the machine body 1 into the waste receiving tank 10 for subsequent processing through the gas outlet nozzle 12.

[0029] like Figures 1 to 8As shown, the crushing mechanism is connected to the bottom of the waste receiving trough 10 for crushing large copper shavings. The crushing mechanism includes a crushing box 201 and crushing rollers 202. The crushing box 201 is connected to the bottom of the waste receiving trough 10 through a feeding channel. Two crushing rollers 202 are provided, and the crushing rollers 202 are rotatably disposed inside the crushing box 201. The two crushing rollers 202 rotate relative to each other. A motor 203 is installed on the crushing box 201. A drive gear 204 is fixedly installed at the output end of the motor 203. A transmission gear 205 is coaxially fixedly connected to the crushing rollers 202. The two transmission gears 205 mesh, and one of the transmission gears 205 meshes with the drive gear 204. A gap is formed between the two crushing rollers 202 for crushing copper shavings. The crushing chamber 201 is a crushing space with a feeding channel outlet located above it. Two baffles 206 are fixedly installed on the inner top wall of the crushing chamber 201, forming a funnel shape. The bottom ends of the baffles 206 contact the crushing rollers 202, allowing copper shavings mixed with lubricant or cleaning fluid conveyed by the feeding channel to fall into the interior of the crushing space. The inner bottom wall of the waste receiving trough 10 and the feeding channel are both inclined, allowing copper shavings and lubricant to fall into the interior of the crushing chamber 201. A motor 203 drives the two crushing rollers 202 to rotate relative to each other. The ends of the two crushing rollers 202 that are close to each other rotate downwards. The gap between the two crushing rollers 202 is small. The crushing rollers 202 are made of a material with a hardness higher than copper, allowing them to rotate smoothly during operation. The copper shavings are crushed to prevent the curled copper shavings produced during engraving from becoming entangled on the drum screen 302. Crushing the copper shavings also reduces their space requirements, facilitating collection. Two scrapers 207 are fixedly connected to the inner bottom wall of the crushing box 201. The tips of the scrapers 207 are pointed and contact the surface of the crushing roller 202. As the crushing roller 202 rotates, the scrapers 207 scrape off the copper shavings and lubricant, preventing copper shavings from remaining on the surface of the crushing roller 202 and inside the crushing box 201. To reduce deformation of the crushing roller 202, it is rotatably mounted inside the crushing box 201 via a rotating shaft 208. The crushing roller 202 and the rotating shaft 208 are fixedly connected, and a transmission gear 205 is fixedly fitted onto the rotating shaft 208. Externally, the rotating shaft 208 and the crushing roller 202 are hollow structures and interconnected. The rotating shaft 208 is rotatably connected to a liquid supply seat 209, which is connected to a spray pipe 4. The two liquid supply seats 209 located on one side of the crushing box 201 are interconnected by a connecting pipe, which is rotatably connected to the liquid supply seat 209. The two liquid supply seats 209 located on the other side of the crushing box 201 are connected to an external liquid supply device and to a spray pipe 4, respectively. The external liquid supply device delivers lubricant to the inside of the crushing roller 202 and then into the inside of the spray pipe 4 to lubricate and cool the engraved area, thereby cooling the crushing roller 202 and preventing the crushing roller 202 from deforming due to heat during long-term crushing work, thus ensuring the hardness of the crushing roller 202.

[0030] like Figures 1 to 7 As shown, the solid-liquid separation mechanism is connected to the crushing mechanism and is used to centrifugally separate the crushed copper shavings and lubricant. The solid-liquid separation mechanism includes a separation cylinder 301 and a drum screen 302. A drain pipe 303 is connected to the bottom of the separation cylinder 301. The drum screen 302 is rotatably installed inside the separation cylinder 301. A second motor 304 is installed on the separation cylinder 301. A drive frame 305 is fixedly connected to the outlet end of the separation cylinder 301. The drive frame 305 and the output end of the second motor 304 are fixedly connected. A material discharge channel is connected to the bottom of the crushing box 201. The end of the drum screen 302 is rotatably connected to the outlet position of the material discharge channel. The end of the drum screen 302 away from the material discharge channel is open and connected to the outside. Multiple blades 306 are set inside the drum screen 302 to temporarily block copper shavings. The multiple blades 306 form a spiral shape. The end of the material discharge channel is cylindrical. A closing plate is fixedly installed at the end of the drum screen 302 near the material discharge channel. The material discharge channel and the closing plate are coaxially rotatably connected. Both the separation cylinder 301 and the drum screen 302 are inclined, allowing lubricant and copper shavings to enter and slide out of the drum screen 302. The motor 304 drives the drive frame 305 and the drum screen 302 to rotate, generating centrifugal force on the copper shavings and lubricant inside the drum screen 302. Under the action of centrifugal force, the lubricant and cleaning fluid are thrown out of the drum screen 302 and enter the separation cylinder 301. The drain pipe 303 is located at the lower end of the separation cylinder 301. The separated lubricant and cleaning fluid can be discharged through the drain pipe 303 for collection and subsequent processing. The blades 306 block the copper shavings to a certain extent, prolonging the residence time of the copper shavings in the drum screen 302, thereby ensuring the separation effect of the drum screen 302 on copper shavings, lubricant and cleaning fluid. During the rotation, the copper shavings can also move forward along the spiral blades 306, which can also prevent the copper shavings from accumulating in large quantities inside the drum screen 302. The screened copper shavings can be recovered by sliding down through the opening of the drum screen 302.

[0031] like Figures 1 to 6As shown, to reduce the clogging of the drum screen 302 by copper shavings, a clearing component is also included. The clearing component is used to push the material inside the screen openings of the drum screen 302 to clear the drum screen 302. The clearing component includes a clearing roller 401, which is rotatably disposed inside the separation cylinder 301. A brush 402 that can be inserted into the screen openings of the drum screen 302 is fixedly connected to the outside of the clearing roller 401. The clearing roller 401 is connected to the output end of the motor 304 via a sprocket, chain, or gear. During the rotation of the drum screen 302 driven by the motor 304, the clearing roller 401 also rotates with the drum screen 302. During the rotation of the clearing roller 401, the brush 402 can clean the screen openings of the drum screen 302, pushing off the copper shavings stuck or stuck inside, reducing the clogging of the screen openings of the drum screen 302, ensuring the screening effect of copper shavings, and reducing the residue of copper shavings in the drum screen 302, ensuring the collection of copper shavings.

[0032] like Figures 1 to 7 As shown, to improve the solid-liquid separation effect, a hot air pipe 13 is installed inside the drum screen 302. The hot air pipe 13 has an air outlet for blowing hot air into the drum screen 302. The hot air pipe 13 is connected to the chip removal blowing pipe 11 to blow hot air into the enclosed processing chamber. The hot air pipe 13 and the chip removal blowing pipe 11 are connected to external hot air equipment. The hot air pipe 13 is fixedly installed at the output end of the motor 304. The drive frame 305 is fixedly connected to the hot air pipe 13. The unblocking roller 401 is connected to the hot air pipe 13 through a sprocket and chain. The sprocket and chain are equipped with a protective cover to prevent copper chips from entering between the sprocket and chain and obstructing the transmission. The hot air pipe 13 is externally connected to an air supply seat. The air supply seat is connected to the external hot air equipment. The hot air pipe 13 has multiple air supply ports. The air supply ports are located inside the air supply seat, allowing the delivered hot air to enter the interior of the hot air pipe 13 through the air supply ports. The external hot air equipment can be a blower and a heater to deliver hot air to the hot air pipe 13 and the chip removal blowing pipe 11. The copper chips in the drum screen 302 are dried through the hot air pipe 13, and the lubricant and cleaning fluid are blown out of the drum screen 302, which facilitates the recovery of copper chips. During the process of blowing copper chips, the chip removal blowing pipe 11 blows hot air into the interior of the closed processing chamber to help dry the workpiece, reduce the residue of cleaning fluid on the workpiece, and facilitate the subsequent collection of the workpiece.

[0033] Example 2 illustrates an engraving method for producing bronze sculptures according to an embodiment of the present invention, using a metal engraving machine for producing bronze sculptures as described in Example 1 above, and includes the following steps: S1. Loading: Open the loading and unloading door by sliding or rotating to clamp the workpiece to be engraved on the chuck 2, and then close the loading and unloading door to ensure the closed environment of the closed processing chamber. The workpiece and the engraving head 3 are both located inside the closed processing chamber. S2. Engraving: The screw feed mechanism on the machine body 1 drives the gantry 5, sliding seat 6, lifting seat 7 and engraving head 3 to move longitudinally along the machine body 1. The screw feed mechanism on the gantry 5 drives the sliding seat 6, lifting seat 7 and engraving head 3 to move laterally along the gantry 5. The screw feed mechanism on the sliding seat 6 drives the lifting seat 7 and engraving head 3 to rise and fall, allowing the engraving head 3 to move freely. The chuck 2 drives the workpiece to be engraved to rotate. The workpiece is engraved by the engraving head 3. During the engraving process, the enclosed processing chamber always protects the engraving position. S3, Lubrication: During the engraving process, the external liquid delivery device first delivers the lubricant to the inside of the rolling roller 202, and then to the spray pipe 4 and sprays the lubricant onto the engraving position. The lubricant lubricates and cools the engraving position and carries some copper chips into the inside of the waste receiving tank 10. S4. Blowing: During the engraving process, the high-pressure blow pipe 8 sprays high-pressure gas to the engraving position to blow off the copper chips generated during engraving. At the same time, the chip removal blow pipe 11 on the closed processing chamber blows the copper chips and lubricant on the machine body 1 into the interior of the waste receiving tank 10. The electric cylinder drives the air nozzle 12 to move back and forth to expand the blowing range, so that the copper chips, lubricant and cleaning liquid can completely enter the interior of the waste receiving tank 10. S5. Crushing: Copper shavings and lubricant fall from the waste receiving trough 10 into the crushing box 201 and are in the crushing space. Motor 1 203 drives two rolling rollers 202 to rotate relative to each other to crush the copper shavings. Baffle 206 blocks the copper shavings and lubricant from entering the crushing space. Scraper 207 scrapes off the copper shavings and lubricant on the surface of the rolling rollers 202 and they fall into the material discharge channel. S6. Spin-drying: The crushed copper shavings and lubricant enter the interior of the drum screen 302. The centrifugal force generated by the rotation of the drum screen 302 driven by the motor 304 causes the lubricant to be thrown away from the drum screen 302 and enter the interior of the separation cylinder 301 and be discharged through the drain pipe 303. At the same time, the hot air pipe 13 delivers hot air into the interior of the drum screen 302 to assist in the drying of the copper shavings. S7. Cleaning: During the engraving process, the cleaning tube 9 sprays cleaning liquid onto the engraved workpiece to wash off the lubricant and copper shavings on its surface. The drying tube assists in drying the workpiece. The washed-off waste is crushed and spun dry before being discharged and collected separately. S8. Unloading: Open the pick-up and drop-off door, remove the engraved workpiece, clamp the new workpiece to be engraved on chuck 2, then close the pick-up and drop-off door, and repeat the above processing.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A metal engraving machine for producing bronze sculptures, comprising a machine body (1), a chuck (2) for holding workpieces, an engraving head (3) for engraving, and a spray pipe (4) for spraying lubricant onto the engraving position, wherein the engraving head (3) is movably mounted on the machine body (1) via a gantry frame (5), a sliding seat (6), and a lifting seat (7), characterized in that, Also includes: The closed processing chamber has the clamping area of ​​the chuck (2), the engraving head (3) and the outlet of the spray pipe (4) located inside the closed processing chamber. The interior of the closed processing chamber is an expandable space. A part of the closed processing chamber can move with the engraving head (3). The closed processing chamber is provided with a pick-up and put-down port for picking up and putting down workpieces. The pick-up and put-down port is provided with an opening and closing door (101). High-pressure purge pipe (8), which is installed on the enclosed processing chamber and has an outlet for spraying high-pressure gas to the engraving position; A cleaning tube (9) is installed on the enclosed processing chamber and has an outlet for spraying cleaning fluid to the engraving position; Waste receiving groove (10), which is fixedly installed on the machine body (1) and located below the clamping position of the chuck (2), is used to receive lubricant, cleaning fluid and copper shavings; The crushing mechanism is connected to the bottom of the waste receiving trough (10) and is used to crush large copper shavings. A solid-liquid separation mechanism, which is connected to the crushing mechanism, is used to centrifugally separate the crushed copper shavings and lubricant.

2. The metal engraving machine for bronze sculpture production according to claim 1, characterized in that, The enclosed processing chamber includes: A fixed frame (102) is fixedly installed on the machine body (1). The chuck (2) is rotatably installed on the fixed frame (102). The pick-up and put-out port is set on the fixed frame (102). An opening and closing door (101) is provided at the pick-up and put-out port. A movable frame (103) is fixedly installed on the gantry frame (5); Follower frame (104), which is fixedly installed on the lifting seat (7) and moves with the engraving head (3). Foldable telescopic frame (105) is connected between the follower frame (104), the fixed frame (102) and the moving frame (103).

3. A metal engraving machine for bronze sculpture production according to claim 2, characterized in that, The crushing and rolling mechanism includes: The crushing box (201) is connected to the bottom of the waste receiving trough (10) through the feeding channel; Two crushing rollers (202) are provided. The crushing rollers (202) are rotatably disposed inside the crushing box (201). The two crushing rollers (202) rotate relative to each other, and a crushing space for crushing copper shavings is formed between the two crushing rollers (202). The outlet of the feeding channel is located above the crushing space.

4. A metal engraving machine for producing bronze sculptures according to claim 3, characterized in that, The solid-liquid separation mechanism includes: A separation cylinder (301) is connected to a drain pipe (303) at its lower part. A rotary drum screen (302) is rotatably disposed inside the separation cylinder (301). The bottom of the crushing box (201) is connected to a material discharge channel. The end of the rotary drum screen (302) is rotatably connected to the outlet of the material discharge channel. The end of the rotary drum screen (302) away from the material discharge channel is open and connected to the outside. The interior of the rotary drum screen (302) is provided with multiple blades (306) for temporarily blocking copper shavings. The multiple blades (306) form a spiral shape.

5. A metal engraving machine for producing bronze sculptures according to claim 4, characterized in that, It also includes a clearing component for pushing material out of the mesh of the drum screen (302) to clear the drum screen (302), the clearing component comprising: A cleaning roller (401) is rotatably disposed inside the separating cylinder (301), and a brush (402) that can be inserted into the sieve eye of the drum screen (302) is fixedly connected to the outside of the cleaning roller (401).

6. A metal engraving machine for producing bronze sculptures according to claim 5, characterized in that, Both the fixed frame (102) and the movable frame (103) are equipped with chip removal blowing pipes (11), and the chip removal blowing pipes (11) have air outlet nozzles (12) that spray gas into the waste receiving tank (10).

7. A metal engraving machine for producing bronze sculptures according to claim 6, characterized in that, The drum screen (302) is provided with a hot air pipe (13) inside, and the hot air pipe (13) has an air outlet for blowing hot air into the drum screen (302).

8. A metal engraving machine for producing bronze sculptures according to claim 7, characterized in that, The crushing roller (202) is rotatably installed inside the crushing box (201) via a rotating shaft (208). The rotating shaft (208) and the crushing roller (202) are hollow structures and are interconnected. The rotating shaft (208) is rotatably connected to a liquid delivery seat (209), and the liquid delivery seat (209) is connected to the spray pipe (4).

9. A metal engraving machine for producing bronze sculptures according to claim 8, characterized in that, The hot air duct (13) and the chip removal blow-off duct (11) are connected to blow hot air into the interior of the enclosed processing chamber.

10. A carving method for producing bronze sculptures, using the metal carving machine for producing bronze sculptures as described in claim 9, characterized in that... Includes the following steps: S1. Loading: Open the pick-up and drop-off door, clamp the workpiece to be engraved on the chuck (2), and then close the pick-up and drop-off door; S2, Engraving: The gantry (5) drives the sliding seat (6), the lifting seat (7) and the engraving head (3) to move longitudinally along the machine body (1). The sliding seat (6) drives the engraving head (3) to move laterally along the gantry (5). The lifting seat (7) drives the engraving head (3) to move up and down, so that the engraving head (3) can move freely and cooperate with the chuck (2) to drive the workpiece to be engraved to rotate for engraving. During the engraving process, the enclosed processing chamber always protects the engraving position. S3, Lubrication: During the engraving process, the lubricant is delivered to the spray pipe (4) through the rolling roller (202) and sprayed onto the engraving position. The lubricant lubricates the engraving position and carries some copper chips into the interior of the waste receiving groove (10). S4, blowing: During the engraving process, the high-pressure blowing pipe (8) sprays high-pressure gas to the engraving position to blow off the copper chips generated during the engraving. At the same time, the chip removal blowing pipe (11) on the closed processing chamber blows the copper chips and lubricant on the machine body (1) into the interior of the waste receiving tank (10). S5, Crushing: Copper shavings and lubricant fall from the waste receiving trough (10) into the crushing box (201) and are in the crushing space. Two crushing rollers (202) rotate relative to each other to crush the copper shavings. S6, Spin-drying: The crushed copper shavings and lubricant enter the interior of the drum screen (302). The centrifugal force generated by the rotation of the drum screen (302) causes the lubricant to be thrown away from the drum screen (302) and enter the interior of the separation cylinder (301) and be discharged through the drain pipe (303). At the same time, the hot air pipe (13) delivers hot air to the interior of the drum screen (302) to assist in the drying of the copper shavings. S7. Cleaning: During the engraving process, the cleaning tube (9) sprays cleaning liquid onto the engraved workpiece to wash off the lubricant and copper shavings on its surface. The drying tube assists in drying the workpiece. The washed-off waste is crushed and spun dry before being discharged and collected. S8. Unloading: Open the pick-up and drop-off door, remove the engraved workpiece, clamp the new workpiece to be engraved on the chuck (2), then close the pick-up and drop-off door and repeat the above processing.

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