Laser cutting equipment for fan shell production and control system thereof

Abstract

The invention discloses laser cutting equipment for fan shell production and a control system thereof, the laser cutting equipment for fan shell production comprises a laser welding mechanism, the laser welding mechanism comprises a lateral movement case, and guide rails are fixedly connected to the two sides of the middle of the top end of the lateral movement case. Through the arrangement of the flowing water tank, during use, water flow flows in the flowing water tank, a water pump drives the water flow to circularly flow to dissipate the temperature on the bottom supporting plate, and due to the fact that the bottom supporting plate is connected with the supporting plates, the temperature on the supporting plates can be dissipated, so that a low-temperature environment is formed between the supporting plates; when the slag is blown away by the auxiliary gas, the slag can pass through the cooling section to solidify the surface of the slag, when the slag falls on the surface of the supporting plate, the slag can fall into the flowing water tank, and the non-solidified slag is solidified in the contact area when making contact with the surface of the supporting plate due to the low temperature of the supporting plate, so that the contact area between the slag and the surface of the supporting plate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fan production, and in particular to laser cutting equipment for fan casing production and a control system thereof. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and deliver gas. It is a driven fluid machine. Fan is the customary abbreviation for gas compression and gas delivery machinery in China. The fans usually include ventilators, blowers, and wind turbines. Industrial fans usually refer to ventilators, which are composed of metal casings, brackets, blades, and motors.

[0003] In the prior art, during the production process of the industrial fan housing, a laser cutting machine is required to perform high-precision cutting and complex shape cutting to ensure the installation accuracy of each part of the industrial fan housing. When the industrial fan housing workpiece is cut, the slag on the workpiece will be flushed out with the help of the impact of the auxiliary gas to form slag particles, and the slag particles will fall on the surface of the support. Since the fan housing workpiece has a high temperature due to the heat generated by welding, part of the heat is transferred to the support, making the temperature of the support high. The slag generated by the cutting falls on the support, cools and solidifies on the support, and adheres to the support, so it needs to be cleaned. The existing method is mainly manual cleaning with a scraper. Because the support includes several long strips with triangular end faces, which are relatively sharp, it is easy to scratch the operator's hands during the actual cleaning process, and the operation safety is low and it is relatively inconvenient. Summary of the invention

[0004] The purpose of the present invention is to provide a laser cutting device and a control system for fan casing production, so as to solve the technical problems raised in the above-mentioned background technology that the slag particles on the surface of the support are cleaned manually using a scraper. Because the end face of the support is triangular and relatively sharp, it is easy to scratch the operator's hands during the actual cleaning process, resulting in low operating safety and inconvenience.

[0005] To achieve the above object, the present invention provides the following technical solutions: A laser cutting device for producing fan casings, comprising a laser welding mechanism, the laser welding mechanism comprising a side-moving chassis, both sides of the top of the side-moving chassis are fixedly connected to guide rails, a cutting processing table is arranged on one side of the side-moving chassis, a moving wheel is fixedly connected to the bottom end of the cutting processing table, a moving frame is arranged on the top of the side-moving chassis, the moving frame is slidably connected to the guide rails, a laser cutting head is arranged on one side of the moving frame, and a No. 2 telescopic sleeve is fixedly connected to the middle upper and lower parts of both sides of the laser cutting head, and the other end of the No. 2 telescopic sleeve is fixedly connected to the end of the moving frame; The top of the cutting table is fixedly connected to a support plate, and a circulating cooling mechanism is arranged inside the cutting table, the circulating cooling mechanism comprises a water tank, a flowing water trough is fixedly connected to the upper middle part of the cutting table, a bottom supporting plate is arranged above the flowing water trough, the bottom supporting plate is fixedly connected to the flowing water trough, the bottom end of the bottom supporting plate is in contact with the flowing water trough, a drainage port is installed on one side of the bottom end of the flowing water trough, the water tank is located below the drainage port, a cooling pipe is arranged on one side of the water tank, both ends of the cooling pipe are fixedly connected to expansion pipes, one of the expansion pipes is fixedly connected to the water tank, and the other expansion pipe is connected to one end of the flowing water trough through a water pump.

[0006] Support frames are fixedly connected to both sides of the middle of the cutting table, and the cooling pipes are overlapped with the support frames. The support frames are used to support the cooling pipes to ensure the stability of the cooling pipes. The number of cooling pipes is set according to needs, and the interval between the upper and lower cooling pipes needs to be greater than 10 cm to ensure the temperature dissipation. The No. 1 telescopic sleeve is located on the outer side of the guide rail close to one side of the cutting table. The No. 1 telescopic sleeve and the No. 2 telescopic sleeve are used to prevent slag from falling on the guide rail to avoid affecting the movement of the laser cutting head and the mobile frame. Through the setting of the flowing water tank, when in use, water flows in the flowing water tank, and the water pump drives the circulation of water to dissipate the temperature on the bottom support plate. Because the bottom support plate is connected to the support plate, the temperature on the support plate can be dissipated, thereby forming a lower temperature environment between the support plates. In this way, when the slag is blown away by the auxiliary gas, it can pass through the cooling interval to make the slag Surface solidification, when the slag falls on the surface of the support plate, it can fall into the flowing water tank, and the unsolidified slag will solidify in the contact area when it contacts the surface of the support plate due to the low temperature of the support plate, thereby reducing the contact area between the slag and the surface of the support plate. At the same time, when this design is in use, due to the large impact force of the auxiliary gas, it can blow the water to splash, and the splashing water droplets fall on the surface of the support plate and the bottom support plate, which can increase the dissipation of the temperature of the support plate. At the same time, the moisture on the surface and the subsequent slag can be quickly cooled and solidified when in contact with the moisture, further reducing the amount of slag adhesion, making subsequent cleaning easier, without the need for strong cleaning to avoid scratching the hands, and more convenient to use. The cooling pipe adopts a copper pipe to facilitate moisture to enter the cooling pipe, which can dissipate heat and ensure the cooling of the water. When used for a long time, a fan needs to be set on one side of the cooling pipe to assist the cooling of the cooling pipe to ensure the low temperature of the water.

[0007] Preferably, a nozzle is fixedly connected to the bottom end of the laser cutting head, a slag cleaning mechanism is arranged on the outer side of the nozzle, the slag cleaning mechanism includes a top sealing plate, a sliding sleeve is fixedly connected to the inside of the top sealing plate, the sliding sleeve is fixedly connected to the nozzle, a limiting air sleeve is arranged on the outer side of the top sealing plate, a No. 1 telescopic sleeve is installed between one side of the movable frame and the side shift chassis, and the No. 1 telescopic sleeve is sleeved with a guide rail.

[0008] Preferably, an inner ring groove is provided above the middle of the inner ring surface of the air limiting sleeve, a connecting groove is provided at the bottom end of the sliding sleeve, a connecting piece is rotatably connected inside the connecting groove, a sliding rod is slidably connected inside the connecting piece, and one end of the sliding rod is slidably connected to the inner ring groove.

[0009] Preferably, a filter sleeve is provided at the top of the water tank, and a bottom clamp ring is fixedly connected to the bottom end of the filter sleeve, and the bottom clamp ring is plugged into the water tank. A filter cloth is fixedly connected to the inside of the filter sleeve, and the filter cloth is arranged in an arc shape, and the bottom of the arc is located below the upper surface of the water tank.

[0010] Preferably, an adsorption sleeve is provided above the water tank, the outer surface of the adsorption sleeve is fixedly connected to an outer plate, a magnet is provided inside the adsorption sleeve, the outer ring surface diameter of the magnet is smaller than the inner ring surface diameter of the adsorption sleeve, limiting clamps are inserted at both ends of the magnet, and the limiting clamps and the magnet are in interference fit.

[0011] Preferably, one end of the limiting clamp is fixedly connected to an extrusion plate, a bearing is installed between the outer surface of the extrusion plate and the inner ring surface of the adsorption sleeve, one end of the extrusion plate is installed with an outer limiting disk, one end of the outer limiting disk is fixedly connected to a moving sleeve, the upper and bottom ends of the moving sleeve are fixedly connected to sliders, the middle upper and lower parts of one side of the moving sleeve are fixedly connected to side pressure plates, and the ends of the two side pressure plates away from each other are fixedly connected to arc-shaped rubber strips.

[0012] Preferably, a limiting frame is provided on the outer side of the slider, and sliding grooves are provided on the upper and lower parts of the limiting frame. The slider is slidably connected to the sliding groove, a spring is fixedly connected between one side of the movable sleeve and the limiting frame, and a side connecting rod is fixedly connected between the top of the limiting frame and the cutting processing table.

[0013] Preferably, a control system for a laser cutting device for producing a fan housing comprises a focus adjustment module, a visual positioning module, an error compensation module and a PLC control module; The focus adjustment module is used to adjust the position of the focus to cut the workpiece; The visual positioning module is used to identify the position of the fan casing above the support plate and perform precise cutting; The error compensation module is used to adjust the feed amount during the movement of the laser cutting head, thereby reducing the feed error and increasing the cutting accuracy; The PLC control module is used to control the start and stop of the mobile frame, laser cutting head and water pump.

[0014] Preferably, the specific working steps of the visual positioning module are: the mobile frame and the laser cutting head move, the position of the camera is adjusted, and multiple groups of photos of the fan casing on the cutting processing table are taken, and the taken photos are transmitted to the visual processing platform. At the same time, during the movement of the mobile frame and the laser cutting head, the laser rangefinder performs detection and identifies the position of the workpiece. Combined with the taken photos and the coordinates of the laser cutting head, the visual processing platform calculates the position of the workpiece, and identifies the cutting path according to the shape and position to be cut, and sends it to the PLC control module and the laser cutting head, and the laser cutting head cuts the fan casing.

[0015] Preferably, the working steps of the error compensation module are: S1. Feed error measurement and acquisition: Use the feed error measurement formula to calculate the positioning error. The formula is: ; Where, L represents the distance between the two guide rails; Indicates the travel distance of the laser cutting head on the mobile frame. That is the feed range of the laser cutting head; Indicates the current feed distance of the laser cutting head in the direction of the guide rail; and Indicates the feed errors corresponding to the contact points of the moving frame on the two guide rails; S2. Data processing: Configure multiple measurement points and use weighted average to calculate the final required feed error. The formula is: ; In the formula, is the feed error that needs to be compensated in the end, Indicates The weight coefficient corresponding to the feed error measurement data satisfies condition; S3. Compensation calculation: Use the error compensation calculation formula to calculate the compensation value. The formula is: ; In the formula, Indicates the feed error compensation value of the CNC laser cutting machine. represents the influencing factor of feed error compensation, Indicates auxiliary parameters for calculating compensation value. Indicates time Adjustment item for feed error compensation value calculation.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting a flowing water trough, when in use, water is made to flow in the flowing water trough, and the water pump drives the circulation of the water flow to dissipate the temperature on the bottom support plate. Since the bottom support plate is connected to the support plate, the temperature on the support plate can be dissipated, thereby forming a low-temperature environment between the support plates. In this way, when the slag is blown away by the auxiliary gas, it can pass through the cooling zone to solidify the slag surface. When the slag falls on the surface of the support plate, it can fall into the flowing water trough. The unsolidified slag will solidify in the contact area when it contacts the surface of the support plate due to the low temperature of the support plate, thereby reducing the contact area between the slag and the surface of the support plate. At the same time, when this design is in use, the impact force of the auxiliary gas is large, and the slag can be blown away. The moving water body splashes, and the splashed water falls on the surface of the support plate and the bottom support plate. When the airflow is large, part of the water flow will also splash on the surface of the fan casing, increasing the heat dissipation efficiency of the fan casing, so as to facilitate the removal of the fan casing. At the same time, the water flow can increase the dissipation of the temperature of the support plate. At the same time, the surface moisture and the subsequent slag can be quickly cooled and solidified when in contact with the moisture, further reducing the amount of slag adhesion, making subsequent cleaning easier and eliminating the need for strong cleaning to avoid scratching the hands. It is more convenient to use. The cooling pipe adopts a copper pipe to facilitate the entry of moisture into the cooling pipe, which can dissipate heat and ensure the cooling of the water body. When used for a long time, a fan needs to be set on one side of the cooling pipe to assist the cooling of the cooling pipe to ensure the low temperature of the water body.

[0017] 2. In the present invention, the nozzle is closed by setting the air limiting sleeve, and the auxiliary gas can be limited when in use, and the flow of the auxiliary gas can be concentrated on the inner side of the air limiting sleeve. In this way, when the auxiliary gas is sprayed, the high-pressure range can be increased, so that the blown slag can be blown out from the slit by the gas in the area between the nozzle and the outer air limiting sleeve, thereby reducing the amount of slag on the surface of the fan casing, thereby reducing the time for subsequent processing and increasing the production efficiency of the fan casing. Through the setting of the sliding rod and the connecting piece, the air limiting sleeve can be moved in any direction within the horizontal range, increasing the area of ​​the slit covered by the air limiting sleeve, thereby increasing the effect of slag blowing out, further reducing the slag on the surface of the fan casing, and reducing the roughness of the surface of the fan casing.

[0018] 3. In the present invention, by setting the adsorption sleeve, cooperating with the drainage port, the outer limit plate and the extrusion plate are fixedly installed with bolts, so that when the water flows out from the drainage port, the adsorption sleeve can be rotated by utilizing the impact force of the water flow, and the slag in the water body can be adsorbed by the magnetic force of the magnet, so that the slag adheres to the surface of the adsorption sleeve. When the slag rotates to an area far away from the magnet, the centrifugal force of the adsorption sleeve rotation can cause the slag to be thrown out in a parabola and fall on the surface of the filter cloth, and the slag is filtered and collected by the filter cloth. The arc surface of the filter cloth facilitates the aggregation of the slag, and can prevent the slag from being scattered on the surface of the filter cloth to cause blockage, thereby ensuring the stability of use. At the same time, this design can enable part of the water body to move along with the rotation of the adsorption sleeve, thereby increasing the contact area between the water body and the air, and facilitating the cooling of the water. 4. In the present invention, by setting the movable sleeve and the limit frame, when the size of the water flow changes, the adsorption sleeve can be moved by the impact of the water flow to prevent the water flow from falling from above the adsorption sleeve and affecting the rotation of the adsorption sleeve. The spring is set to limit the movement of the adsorption sleeve, thereby preventing the adsorption sleeve from moving too much and being unable to be driven to rotate by the flow of the water body. The arc-shaped rubber strip is set to slow down the resetting of the movable sleeve, and the elastic force of the spring and the impact of the water body are combined to make the adsorption sleeve gradually in a more stable position. It is more convenient to use, has a simple structure, and has a low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a laser cutting device for producing a fan housing according to the present invention Figure 1 ; Figure 2 This invention is a laser cutting device for producing fan housing Figure 1 A schematic diagram of the enlarged structure of the middle A area; Figure 3 A schematic diagram of the three-dimensional structure of a laser cutting device for producing a fan housing according to the present invention Figure 2 ; Figure 4 It is a partial structural exploded view of a circulating cooling mechanism in a laser cutting device for producing a fan housing according to the present invention; Figure 5 It is a three-dimensional structural schematic diagram of a circulating cooling mechanism in a laser cutting device for producing a fan housing according to the present invention; Figure 6 It is a three-dimensional structural schematic diagram of a cutting processing table in a laser cutting device for producing a fan housing according to the present invention; Figure 7 It is a schematic diagram of the positional relationship between the internal structure of the adsorption sleeve and the filter sleeve in a laser cutting device for producing a fan housing of the present invention; Figure 8It is a schematic diagram of the position state of the adsorption sleeve in a laser cutting device for producing a fan housing in a small water flow state according to the present invention; Fig. 9 It is a schematic diagram of the position state of the adsorption sleeve in a laser cutting device for producing a fan housing according to the present invention when the water flow becomes larger; Fig.10 It is a schematic diagram of the connection structure between the slag cleaning mechanism and the laser cutting head in a laser cutting device for producing a fan casing according to the present invention; Fig.11 This is an exploded view of a slag cleaning mechanism in a laser cutting device for producing a fan housing according to the present invention; Fig.12 This is a system diagram of a laser cutting device for producing a fan casing and its control system according to the present invention; Fig.13 The present invention is a laser cutting device for fan casing production and its control system Figure 4 Schematic diagram of the enlarged structure of the middle B area; Fig.14 The present invention is a side view of a magnet in a laser cutting device for producing a fan casing and a control system thereof.

[0020] In the figure: 1. Laser welding mechanism; 11. Side-shift chassis; 12. Guide rail; 13. Telescopic sleeve No. 1; 14. Moving frame; 15. Laser cutting head; 16. Telescopic sleeve No. 2; 17. Cutting table; 18. Moving wheel; 19. Support plate; 110. Nozzle; 111. Support frame; 2. Circulation cooling mechanism; 21. Water tank; 22. Filter sleeve; 23. Cooling pipe; 24. Side connecting rod; 25. Limiting frame; 26. Bottom support plate; 27. Flow water tank; 28. Slide; 29. ​​Bottom clamping ring; 210. Filter cloth; 211. Adsorption sleeve; 212. Magnet; 213. Outer plate; 214. Limiting clamping ring; 215. Extrusion plate; 216. Bearing; 217. Outer limiting plate; 218. Moving sleeve; 219. Sliding block; 220. Side pressure plate; 221. Arc rubber strip; 222. Spring; 223. Expansion tube; 224. Drainage port; 3. Slag cleaning mechanism; 31. Air limiting sleeve; 32. Top sealing plate; 33. Connecting piece; 34. Sliding rod; 35. Inner ring groove; 36. Sliding sleeve; 37. Connecting groove; 4. Focus adjustment module; 5. Visual positioning module; 6. Error compensation module; 7. PLC control module. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Reference Figure 1 - Fig. 9 A laser cutting device for producing a fan casing includes a laser welding mechanism 1, the laser welding mechanism 1 includes a side-moving chassis 11, both sides of the top of the side-moving chassis 11 are fixedly connected with guide rails 12, a cutting processing table 17 is arranged on one side of the side-moving chassis 11, and a moving wheel 18 is fixedly connected to the bottom end of the cutting processing table 17; A moving frame 14 is arranged at the top of the side-moving chassis 11, and the moving frame 14 is slidably connected to the guide rail 12. A laser cutting head 15 is installed on one side of the moving frame 14, and the laser cutting head 15 is located above the cutting processing table 17. A No. 2 telescopic sleeve 16 is fixedly connected to both sides of the laser cutting head 15 on the moving frame 14, and the other end of the No. 2 telescopic sleeve 16 is fixedly connected to the end of the moving frame 14. When the laser cutting head 15 slides along the moving frame 14, the No. 2 telescopic sleeve 16 is telescopically moved with the movement of the laser cutting head 15, so as to protect the moving frame 14 and prevent the slag generated by the cutting from adhering to the moving frame 14 and affecting the normal movement of the laser cutting head 15. The top of the cutting table 17 is fixedly connected to a support plate 19 for placing a fan casing workpiece to be cut. A circulating cooling mechanism 2 is arranged inside the cutting table 17. The circulating cooling mechanism 2 includes a water tank 21 fixedly connected to the cutting table. A flowing water trough 27 is fixedly connected to the upper part of the cutting table 17. A bottom support plate 26 is arranged above the flowing water trough 27. The bottom support plate 26 is fixedly connected to the flowing water trough 27. The bottom end of the bottom support plate 26 contacts the flowing water trough 27. A drainage port 224 is installed on one side of the bottom end of the flowing water trough 27. The water tank 21 is located below the drainage port 224. A cooling pipe 23 is arranged on one side of the water tank 21. Both ends of the cooling pipe 23 are fixedly connected to expansion pipes 223. One of the expansion pipes 223 is fixedly connected to the water tank 21, and the other expansion pipe 223 is connected to one end of the flowing water trough 27 through a water pump.

[0023] Support frames 111 are fixedly connected to both sides of the middle of the cutting processing table 17, and the cooling pipes 23 are overlapped with the support frames 111. The support frames 111 are used to support the cooling pipes 23 to keep the cooling pipes 23 stable. The number of cooling pipes 23 is set according to demand, and the cooling pipes 23 are arranged in upper and lower layers. The interval between the upper and lower layers of cooling pipes 23 needs to be greater than 10 cm to ensure heat dissipation.

[0024] A No. 1 telescopic sleeve 13 is installed between one side of the movable frame 14 on which the laser cutting head 15 is installed and the side shift chassis 11. The No. 1 telescopic sleeve 13 is socketed with the guide rail 12. The No. 1 telescopic sleeve 13 is located on the outer side of the guide rail 12 close to the cutting processing table 17. The No. 1 telescopic sleeve 13 is provided to prevent slag from falling on the guide rail 12 and prevent it from affecting the movement of the movable frame 14.

[0025] When the fan casing workpiece is cut, the temperature of the fan casing workpiece is relatively high due to the heat generated by welding, and part of the heat will be conducted to the support plate 19, and part of the heat on the support plate 19 will be conducted to the bottom support plate 26, so that water flows in the flow trough 27, and the circulation of water driven by the water pump is beneficial to the heat dissipation of the bottom support plate 26, and further to the heat dissipation of the support plate 19, so that the temperature of the support plate 19 is relatively low. Cooling range.

[0026] When the slag is blown away by the auxiliary gas, it passes through the cooling zone of the support plate 19, where the slag loses heat. Part of the slag cools and solidifies, passes through the support plate 19 and falls into the flowing water trough 27, while part of the slag that has not cooled and solidified will contact and adhere to the support plate 19. Since the temperature of the support plate 19 is relatively low, when the slag contacts the surface of the support plate 19, the heat is quickly dissipated and the slag solidifies. The contact area between the slag and the surface of the support plate 19 is small, which is convenient for later cleaning.

[0027] At the same time, since the impact force of the auxiliary gas used is relatively large, the water in the flowing water trough 27 can be blown to splash, and the splashing water droplets fall on the surfaces of the support plate 19 and the bottom support plate 26, which can be beneficial to the heat dissipation of the support plate 19, and part of the slag contacts the water droplets on the support plate 19, which can be quickly cooled and solidified, and fall into the flowing water trough 27 or adhere to the support plate 19 with a smaller adhesion area, further reducing the adhesion and cleaning force of the slag, which is beneficial to avoid scratching the hands.

[0028] The cooling pipe 23 is made of copper pipe, which has high thermal conductivity and good heat conduction effect, which is conducive to the heat dissipation of the water flow in the cooling pipe 23. When used for a long time, a fan needs to be set on one side of the cooling pipe 23 to assist the cooling and heat dissipation of the cooling pipe 23.

[0029] Embodiment 2: Figure 2 , Fig.10 and Fig.11 As shown, the bottom end of the laser cutting head 15 is fixedly connected to a nozzle 110, and a slag cleaning mechanism 3 is arranged on the outer side of the nozzle 110. The slag cleaning mechanism 3 includes a top sealing plate 32, and a through hole is arranged in the middle of the top sealing plate 32. A sliding sleeve 36 is fixedly connected inside the edge of the through hole of the top sealing plate 32, and the sliding sleeve 36 is fixedly connected to the nozzle 110.

[0030] A limiting air sleeve 31 is arranged on the outer side of the top sealing plate 32, an inner ring groove 35 is provided on the upper part of the inner ring surface of the limiting air sleeve 31, a connecting groove 37 is provided on the bottom end of the sliding sleeve 36, a connecting piece 33 is rotatably connected inside the connecting groove 37, a sliding rod 34 is slidably connected inside the connecting piece 33, and one end of the sliding rod 34 is slidably connected to the inner ring groove 35.

[0031] The end of the slide rod 34 is provided with a ball head, and the slide rod 34 is connected to the air limiting sleeve 31, so that the air limiting sleeve 31 can move in the direction opposite to the moving direction of the laser cutting head 15. At the same time, the air limiting sleeve 31 surrounds the nozzle 110, so that after the auxiliary gas is sprayed out, the scattered gas gathers in the air limiting sleeve, so that the gas is concentrated at the cutting seam and flows out, thereby blowing the slag out of the cutting seam, reducing the amount of slag on the surface of the fan housing workpiece, which is beneficial to improving production efficiency and quality.

[0032] Embodiment 3: According to Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig. 9 , Fig.13 and Fig.14 As shown, a filter sleeve 22 is provided at the top of the water tank 21, and a bottom clamp ring 29 is fixedly connected to the bottom end of the filter sleeve 22. The bottom clamp ring 29 is plugged into the water tank 21, and a filter cloth 210 is fixedly connected to the inside of the filter sleeve 22. The filter cloth 210 is arranged in an arc shape, and the arc bottom of the filter cloth 210 is lower than the upper surface of the water tank 21.

[0033] An adsorption sleeve 211 is arranged above the water tank 21, and the water outlet end of the drainage port 224 is arranged close to the adsorption sleeve 211, so that the water outlet of the drainage port 224 impacts the adsorption sleeve 211, and the outer surface of the adsorption sleeve 211 is fixedly connected to the outer plate 213, and the interior of the adsorption sleeve 211 is provided with a magnet 212, and the outer ring surface diameter of the magnet 212 is smaller than the inner ring surface diameter of the adsorption sleeve 211.

[0034] Both ends of the magnet 212 are plugged with limiting snap rings 214, and there is an interference fit between the limiting snap ring 214 and the magnet 212. One end of the limiting snap ring 214 is fixedly connected to an extrusion plate 215, and a bearing 216 is installed between the outer surface of the extrusion plate 215 and the inner ring surface of the adsorption sleeve 211. One end of the extrusion plate 215 is installed with an outer limiting disk 217, and the outer limiting disk 217 and the extrusion plate 215 can be fixedly connected by bolts. One end of the outer limiting disk 217 is fixedly connected to a moving sleeve 218, and the top and bottom ends of the moving sleeve 218 are fixedly connected to a slider 219. The upper and lower parts of one side of the moving sleeve 218 are fixedly connected to a side pressure plate 220, and the ends of the two side pressure plates 220 that are away from each other are fixedly connected to an arc-shaped rubber strip 221.

[0035] A limit frame 25 is arranged on the outer side of the slider 219, and a slide groove 28 is provided on the top wall and the bottom wall of the limit frame 25. The slider 219 is slidably connected to the slide groove 28. A spring 222 is fixedly connected between one side of the movable sleeve 218 and the limit frame 25, and a side connecting rod 24 is fixedly connected between the top end of the limit frame 25 and the cutting processing table 17.

[0036] When water flows out from the drainage port 224, it impacts the adsorption sleeve 211 to make it rotate. Through the magnetic force of the magnet 212, the slag in the water body is adsorbed on the surface of the adsorption sleeve 211 and rotates with the adsorption sleeve 211. When the slag rotates to an area away from the magnet 212, the magnetic force between the slag and the magnet 212 weakens, causing the slag to fall on the surface of the filter cloth 210. The slag is filtered through the filter cloth 210 and collected. The filter cloth 210 is provided with an arc surface to facilitate the aggregation of the slag and prevent the slag from being scattered on the surface of the filter cloth 210.

[0037] At the same time, part of the water body rotates along with the rotation of the adsorption sleeve 211, which can increase the water body stroke and is beneficial to the cooling of the water.

[0038] The arrangement of the movable sleeve 218 and the limiting frame 25 allows the adsorption sleeve 211 to move and change position according to the magnitude of the impact force of the water flow, thereby preventing the water flow from falling directly above the adsorption sleeve 211 and affecting the rotation of the adsorption sleeve 211. The arrangement of the spring 222 is used to limit the movement of the adsorption sleeve 211, thereby preventing the adsorption sleeve 211 from moving too much and being unable to be driven to rotate by the flow of the water body. The arc-shaped rubber strip 221 is arranged. When the movable sleeve 218 is reset, the arc-shaped rubber strip 221 will be deformed, increasing the squeezing force between the movable sleeve 218 and the limiting frame 25, thereby increasing friction, slowing down the reset of the movable sleeve 218, and cooperating with the elastic force of the spring 222 and the impact of the water body, so that the adsorption sleeve 211 is gradually in a more stable position.

[0039] Embodiment 4: According to Fig.12 As shown, a control system of a laser cutting device for producing a fan housing includes a focus adjustment module 4, a visual positioning module 5, an error compensation module 6 and a PLC control module 7; The focus adjustment module 4 is used to adjust the focus position of the laser cutting head 15 to facilitate cutting of the fan casing workpiece; The visual positioning module 5 is used to identify and locate the position of the fan casing workpiece on the support plate 19. The specific working steps are: during the movement of the mobile frame 14 and the laser cutting head 15, the position of the camera is adjusted, and multiple groups of photos of the fan casing workpiece on the cutting processing table 17 are taken. The taken photos are transmitted to the visual processing platform, and the laser rangefinder detects and identifies the workpiece at the same time. Combining the taken photos and the coordinates of the laser cutting head 15, the visual processing platform calculates the coordinates of the workpiece position, and calculates the cutting path according to the shape and position to be cut, and sends it to the PLC control module 7. The camera and the laser rangefinder are both installed on the outside of the laser cutting head 15; The error compensation module 6 is used to adjust the feed amount of the laser cutting head 15 during movement, thereby reducing the feed error and increasing the cutting accuracy. The working steps are: S1. Feed error measurement and acquisition: Use the feed error measurement formula to calculate the positioning error. The formula is: ; Wherein, L represents the distance between the two guide rails 12; Indicates the travel distance of the laser cutting head 15 on the moving frame 14, that is, the feeding range of the laser cutting head 15; Indicates the current feed position of the laser cutting head 15 in the direction of the guide rail 12; and Indicates the feed errors corresponding to the contact points of the moving frame 14 on the two guide rails 12; S2. Data processing: Configure multiple measurement points and use weighted average to calculate the final required feed error. The formula is: ; In the formula, is the feed error that needs to be compensated in the end, Indicates The weight coefficient corresponding to the feed error measurement data satisfies condition; S3. Compensation calculation: Use the error compensation calculation formula to calculate the compensation value. The formula is: ; In the formula, Indicates the feed error compensation value of the laser cutting head 15, represents the influencing factor of feed error compensation, Indicates the auxiliary parameter for calculating the compensation value. Indicates time Adjustment item for feed error compensation value calculation.

[0040] The PLC control module 7 is used to control the position adjustment of the moving frame 14, the position adjustment of the laser cutting head 15 and whether it is running or not, and the start and stop of the water pump.

[0041] How to use and working principle of this device: A worker or a robot places the fan casing workpiece that needs to be cut on the support plate 19. The PLC control module 7 controls the movement of the mobile frame 14 and the laser cutting head 15. The camera and the laser rangefinder detect the position of the workpiece, and generate the cutting path and cutting power. At the same time, the nozzle position is adjusted to ensure the blowing force of the auxiliary gas on the welding slag at the cutting point.

[0042] Then the water pump is turned on to pump the water in the water tank 21 into the flowing water trough 27 to cool the support plate 19 and the bottom support plate 26. The laser cutting head 15 is turned on to cut the fan casing workpiece. During this process, the bottom end of the air limiting sleeve 31 can contact the surface of the fan casing workpiece as the nozzle moves. Through friction, the air limiting sleeve 31 moves in the direction opposite to the movement direction of the No. 2 telescopic sleeve 16. The sprayed auxiliary gas sprays the cutting slag out of the cutting seam. When the slag passes through the cooling area between the support plates 19, due to the low temperature in the cooling area, part of the slag surface solidifies and falls into the flowing water trough 27. Part of the unsolidified slag solidifies and adheres to the support plate 19 when it contacts the support plate 19. Due to the low temperature, the solidification is fast, the adhesion area is small, and the cleaning is more convenient.

[0043] Subsequently, as the workpiece vibrates when it is placed in, part of the slag attached to the support plate 19 and the bottom support plate 26 falls into the flowing water trough 27. The slag is made to flow out of the drainage port 224 in coordination with the water flow through the flow of water. The adsorption sleeve 211 is rotated through the impact of the water flow and the setting of the outer plate 213. The slag is attached to the surface of the adsorption sleeve 211 through the adsorption of the magnet 212 and rotates with the adsorption sleeve 211. When the adsorption sleeve 211 rotates to an area away from the magnet 212, the magnetic force weakens. Due to the centrifugal force, the slag falls on the surface of the filter cloth 210 in a parabola. At the same time, part of the water flow will also move with the adsorption sleeve 211 due to the tension, and then fall on the filter cloth 210. Figure 8 and Fig. 9 As shown, by utilizing the tension of the water flow and the arc shape of the filter cloth 210 , the slag can be gathered at the lowest position of the filter cloth 210 .

[0044] During the cutting process, the focus adjustment module 4 adjusts the focus position according to the travel speed and power to better cut the fan casing.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cutting device for producing a fan casing, comprising a laser welding mechanism (1), characterized in that: The laser welding mechanism (1) comprises a side-moving chassis (11), two guide rails (12) are fixedly connected to both sides of the top of the side-moving chassis (11), a cutting table (17) is provided on one side of the side-moving chassis (11), and a moving wheel (18) is fixedly connected to the bottom end of the cutting table (17); A moving frame (14) is arranged at the top of the side-shifting chassis (11), the moving frame (14) is slidably connected to the guide rail (12), a laser cutting head (15) is arranged on one side of the moving frame (14), and a second telescopic sleeve (16) is fixedly connected to both sides of the laser cutting head (15) on the moving frame (14), and the other end of the second telescopic sleeve (16) is fixedly connected to the end of the moving frame (14); The top of the cutting table (17) is fixedly connected to a support plate (19); a circulating cooling mechanism (2) is provided inside the cutting table (17); the circulating cooling mechanism (2) comprises a water tank (21) fixedly connected to the cutting table (17); a flowing water tank (27) is fixedly connected to the top of the cutting table (17); a bottom support plate (26) is provided above the flowing water tank (27); the bottom support plate (26) is fixedly connected to the flowing water tank (27); the bottom support plate (26) ) is in contact with a flow trough (27); a drainage port (224) is installed on one side of the bottom end of the flow trough (27); the water tank (21) is located below the drainage port (224); a cooling pipe (23) is provided on one side of the water tank (21); both ends of the cooling pipe (23) are fixedly connected to expansion pipes (223); one of the expansion pipes (223) is fixedly connected to the water tank (21); and the other of the expansion pipes (223) is connected to one end of the flow trough (27) via a water pump.

2. The laser cutting equipment for fan casing production according to claim 1 is characterized in that: The bottom end of the laser cutting head (15) is fixedly connected to a nozzle (110), a slag cleaning mechanism (3) is arranged outside the nozzle (110), the slag cleaning mechanism (3) comprises a top sealing plate (32), a through hole is arranged in the middle of the top sealing plate (32), a sliding sleeve (36) is fixedly connected inside the edge of the through hole of the top sealing plate (32), the sliding sleeve (36) is fixedly connected to the nozzle (110), and a limiting air sleeve (31) is arranged outside the top sealing plate (32); A first telescopic sleeve (13) is installed between one side of the moving frame (14) and the side-moving chassis (11), and the first telescopic sleeve (13) is sleeved with one of the guide rails (12); Support frames (111) are fixedly connected to both sides of the middle of the cutting and processing table (17), and the cooling pipe (23) is overlapped with the support frame (111).

3. The laser cutting equipment for fan casing production according to claim 2 is characterized in that: An inner ring groove (35) is formed at the upper portion of the inner ring surface of the air limiting sleeve (31), a connecting groove (37) is formed at the bottom end of the sliding sleeve (36), a connecting piece (33) is rotatably connected inside the connecting groove (37), a sliding rod (34) is slidably connected inside the connecting piece (33), and one end of the sliding rod (34) is slidably connected to the inner ring groove (35).

4. The laser cutting equipment for fan casing production according to claim 3 is characterized in that: A filter sleeve (22) is arranged at the top end of the water tank (21); a bottom clamp ring (29) is fixedly connected to the bottom end of the filter sleeve (22); the bottom clamp ring (29) is plugged into the water tank (21); a filter cloth (210) is fixedly connected to the inside of the filter sleeve (22); the filter cloth (210) is arranged in an arc shape; the arc bottom of the filter cloth (210) is lower than the upper surface of the water tank (21).

5. The laser cutting equipment for fan casing production according to claim 4 is characterized in that: An adsorption sleeve (211) is arranged above the water tank (21), the outer surface of the adsorption sleeve (211) is fixedly connected to an outer plate (213), a magnet (212) is arranged inside the adsorption sleeve (211), the outer ring surface diameter of the magnet (212) is smaller than the inner ring surface diameter of the adsorption sleeve (211), limiting clamping rings (214) are inserted at both ends of the magnet (212), and the limiting clamping ring (214) and the magnet (212) are in interference fit.

6. The laser cutting equipment for fan casing production according to claim 5 is characterized in that: One end of the limiting clamp ring (214) is fixedly connected to an extrusion plate (215), a bearing (216) is installed between the outer surface of the extrusion plate (215) and the inner ring surface of the adsorption sleeve (211), one end of the extrusion plate (215) is installed with an outer limiting disk (217), one end of the outer limiting disk (217) is fixedly connected to a moving sleeve (218), the top and bottom ends of the moving sleeve (218) are fixedly connected to a slider (219), the upper and lower parts of one side of the moving sleeve (218) are fixedly connected to a side pressure plate (220), and the top and bottom ends of the two side pressure plates (220) are respectively fixedly connected to an arc-shaped rubber strip (221).

7. The laser cutting equipment for fan casing production according to claim 6 is characterized in that: A limit frame (25) is arranged outside the slide block (219), and a slide groove (28) is provided on the top wall and the bottom wall inside the limit frame (25). The slide block (219) is slidably connected to the slide groove (28), a spring (222) is fixedly connected between one side of the movable sleeve (218) and the limit frame (25), and a side connecting rod (24) is fixedly connected between the top end of the limit frame (25) and the cutting processing table (17).

8. A control system for laser cutting equipment for fan casing production, characterized in that: A laser cutting device for producing a fan casing according to any one of claims 1 to 7, comprising a focus adjustment module (4), a visual positioning module (5), an error compensation module (6) and a PLC control module (7); The focus adjustment module (4) is used to adjust the focus position of the laser cutting head (15) to cut the workpiece; The visual positioning module (5) is used to identify and position the fan casing above the support plate (19); The error compensation module (6) is used to adjust the feed rate of the laser cutting head (15) during movement; The PLC control module (7) is used to control the start and stop of the movable frame (14), the laser cutting head (15) and the water pump.

9. The control system of the laser cutting equipment for fan casing production according to claim 8, characterized in that: The specific working steps of the visual positioning module (5) are as follows: during the movement of the mobile frame (14) and the laser cutting head (15), a camera takes a plurality of groups of photos of the fan casing on the cutting processing table (17), and the taken photos are transmitted to the visual processing platform. At the same time, a laser rangefinder detects and identifies the workpiece. Combining the taken photos and the coordinates of the laser cutting head (15), the visual processing platform calculates the coordinates of the workpiece position, and calculates the cutting path according to the shape and position to be cut, and sends it to the PLC control module (7) and the laser cutting head (15), so that the laser cutting head (15) cuts the fan casing.

10. The control system of the laser cutting equipment for fan casing production according to claim 9, characterized in that: The working steps of the error compensation module (6) are: S1. Feed error measurement and acquisition: Use the feed error measurement formula to calculate the positioning error. The formula is: ； Wherein, L represents the distance between the two guide rails (12); Indicates the travel distance of the laser cutting head (15) on the moving frame (14), that is, the feeding range of the laser cutting head (15); Indicates the current feed position of the laser cutting head (15) in the direction of the guide rail (12); and Indicates the feed errors corresponding to the contact points of the moving frame (14) on the two guide rails (12); S2. Data processing: Configure multiple measurement points and use weighted average to calculate the final required feed error. The formula is: ； In the formula, is the feed error that needs to be compensated in the end, Indicates The weight coefficient corresponding to the feed error measurement data satisfies condition; S3. Compensation calculation: Use the error compensation calculation formula to calculate the compensation value. The formula is: ； In the formula, Indicates the feed error compensation value of the CNC laser cutting machine. represents the influencing factor of feed error compensation, Indicates auxiliary parameters for calculating compensation value. Indicates time Adjustment item for feed error compensation value calculation.

Images