Lost foam coating spraying device

Abstract

The invention provides an evanescent mode coating spraying device, belongs to the technical field of evanescent mode forming and manufacturing, and solves the technical problems that in the prior art, the contact position of a clamping part and an evanescent mode cannot be sprayed, spraying is incomplete, and the quality of the evanescent mode is reduced. The evanescent mode coating spraying device comprises a machine body, a spraying bin and an equipment bin are sequentially formed in the machine body from top to bottom, a support is placed in front of the machine body, a high-pressure spraying machine body is fixed to the support, an anti-blocking mechanism is arranged at the input end of the high-pressure spraying machine body, and a nozzle is fixed to the output end of the high-pressure spraying machine body through a hose. The nozzle is arranged in the spraying bin, a fixing mechanism is arranged on the machine body and comprises a first electric telescopic rod penetrating through the top of the machine body, the bottom of the first electric telescopic rod is in interference fit with a first bearing, and the inner wall of the first bearing is in key connection with a first journal. The spraying device has the advantages that the spraying range of the evanescent mode is more complete, and the spraying angle is richer on the premise that the nozzle is not manually moved.

Description

Technical Field

[0001] The invention belongs to the technical field of lost foam forming manufacturing, and relates to a coating spraying device, in particular to a lost foam coating spraying device. Background Art

[0002] Lost foam casting is a new casting method that uses dry sand without binder and vacuum technology to make foam plastic molds. It is a foam model with similar size and shape to the casting to form a model cluster, brushes refractory paint and dries it, buries it in dry quartz sand for vibration molding, pours it under negative pressure, vaporizes the model, and liquid metal occupies the position of the model. After solidification and cooling, it forms a casting. In the lost foam molding manufacturing process, paint spraying is an important step, which has a direct impact on the quality of the casting. Before spraying, the lost foam model needs to be pretreated. This includes cleaning the surface of the model, removing impurities such as oil and dust to ensure that the paint can be evenly attached to the model, pouring the paint into the mixing tank, using a stirrer to stir it thoroughly, ensuring that the paint is evenly mixed, avoiding precipitation or stratification, and aligning the adjusted spraying equipment with the model surface. Spraying according to the set parameters. When spraying, keep the distance between the spray gun and the model surface moderate, and move the spray gun evenly to ensure that the paint can evenly cover the model surface. For models with complex structures, multiple spraying or different spraying angles may be required to ensure the uniformity of the coating.

[0003] After searching, it was found that a Chinese patent document disclosed a lost foam coating spraying device for casting large CNC machine tools [Application number: CN202210892540.X; Publication number: CN115121403B]. This lost foam coating spraying device for casting large CNC machine tools uses the inner wall of the arc-shaped baffle to block the coating and change the movement direction of the coating, and finally merges into the vertical liquid column. When the vertical liquid column contacts the surface of the lost film, under the impact effect, part of the coating will be broken up into smaller droplets and move toward the two sides. The fans rotate at high speed, and most of the wind force generated is blocked by the rectangular baffle, while part of the airflow is evenly blown into the interior of the assembly box from the diversion holes, and an upward airflow fluctuation is formed inside the assembly box. When the falling coating droplets contact the upward airflow, the falling will be strongly restricted. At the same time, the droplets will be quickly dried under the action of wind force, and finally form solid particles of different sizes, which fall to the bottom of the assembly box. By adding multiple processing components, the dispersed coating droplets can be quickly processed to prevent the undried coating droplets from directly covering the interior of the device and the surfaces of some components, thereby reducing the difficulty of later processing of the interior of the device.

[0004] The lost foam coating spraying device for large CNC casting machine tools disclosed in the patent can centrally recover the coating particles that cannot fall onto the lost foam pattern, thereby preventing the coating from adhering to the inner wall of the device and the surfaces of multiple components, thereby increasing the difficulty of cleaning the device later. However, the lost foam coating spraying device for large CNC casting machine tools cannot spray the contact position between the clamping part and the lost foam, resulting in incomplete spraying and reduced lost foam quality. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a lost foam coating spraying device. The technical problem to be solved by the invention is: how to achieve a more complete spraying range for the lost foam and make the spraying angles richer without manually moving the nozzle.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A lost foam coating spraying device comprises a fuselage, wherein the fuselage is provided with a spraying chamber and an equipment chamber in sequence from top to bottom, a bracket is placed in front of the fuselage, a high-pressure spraying machine body is fixed on the bracket, an anti-blocking mechanism is provided at the input end of the high-pressure spraying machine body, and a nozzle is fixed at the output end of the high-pressure spraying machine body through a hose, and the nozzle is arranged in the spraying chamber; The fuselage is provided with a fixing mechanism, the fixing mechanism includes a first electric telescopic rod passing through the top of the fuselage, a first bearing is interference-fitted at the bottom of the first electric telescopic rod, a first shaft neck is keyed to the inner wall of the first bearing, the fixing mechanism also includes a rotating shaft passing through the bottom of the spraying chamber, the rotating shaft and the first shaft neck are both on the same vertical horizontal line, and the first clamping assembly is provided at the opposite ends of the rotating shaft and the first shaft neck, a second electric telescopic rod is fixed to the bottom of the equipment chamber, a mounting frame is fixed to the top of the second electric telescopic rod, a first motor is fixed to the inner wall of the mounting frame, and an output end of the first motor is keyed to the rotating shaft; A mounting frame is fixed on the left side of the fuselage, a second motor is fixed on the left side of the mounting frame, a first gear is keyed to the output end of the second motor, a limiting ring groove is provided on the left side of the fuselage, a step block is slidably connected in the limiting ring groove, and the step block is adapted to the limiting ring groove, a second gear is fixed on the left side of the step block, the second gear is meshed with the first gear, a third electric telescopic rod is fixed to the second gear, a first mounting plate is fixed to the right end of the third electric telescopic rod, a fourth electric telescopic rod is fixed to the right side of the fuselage, and the fourth electric telescopic rod is connected to the spraying chamber, a second bearing is interference fit on the left side of the fourth electric telescopic rod, a second shaft neck is keyed to the second bearing, a second mounting plate is fixed to the left end of the second shaft neck, the first mounting plate and the second mounting plate are both on the same horizontal line, and second clamping assemblies are provided at the opposite ends of the first mounting plate and the second mounting plate.

[0007] The working principle of the present invention is as follows: the distance between the two connection plates of the first electric telescopic rod and the second electric telescopic rod is extended and retracted to be close to the height of the lost foam, so as to realize the preliminary clamping of the lost foam, and the second clamping assembly is used to clamp the lost foam for the second time. After the clamping is completed, the high-pressure spraying machine body is operated to spray the coating to the lost foam through the nozzle. During the spraying process, the first motor drives the rotating shaft to rotate, the first clamping assembly below rotates with the rotating shaft, the lost foam rotates with the first clamping assembly below, the first clamping assembly above rotates with the lost foam, and the first shaft neck drives the first bearing to rotate with the first clamping assembly, so that the upper The first clamping assembly on the side can rotate more flexibly, reducing resistance, thereby reducing the damage to the lost foam caused by resistance. At the same time, the rotation makes the spraying angle more flexible. The movement of the nozzle is reduced by the rotation of the lost foam itself, so that the nozzle can always be fixed on one side of the fuselage, reducing labor consumption. The first resistance block is made of silicone rubber, which can achieve the clamping of the lost foam while avoiding damage to the lost foam. The second motor indirectly drives the lost foam to rotate back and forth in a single circle. After spraying is completed, the third electric telescopic rod and the fourth electric telescopic rod are extended to bring the second clamping assemblies at both ends closer, and the infrared heating in the second clamping assemblies is used. The lamp is used to dry the surface coating of the area that the second clamping assembly is about to contact, and then the third electric telescopic rod and the fourth electric telescopic rod continue to extend until the second clamping assembly contacts the lost foam to clamp the lost foam, and then the second motor drives the first gear to rotate, and the first gear is transmitted to the second gear, and the step block slides with the second gear in the specified circular track of the limiting ring groove, and the limiting ring groove is adapted to the step block to prevent it from moving left and right, and the second gear drives the third electric telescopic rod to rotate, and the first mounting plate rotates with the third electric telescopic rod, and the second clamping assembly rotates with the first mounting plate and drives the lost foam to move forward and backward. The lost foam drives the second clamping assembly on the right side to rotate, the second mounting plate rotates with the second clamping assembly, the second journal rotates with the second mounting plate and drives the inner wall of the second bearing to rotate, so that the forward and backward rotation of the lost foam is more flexible, and the resistance is reduced, thereby reducing the damage to the lost foam caused by the resistance. The forward and backward rotation makes the unsprayed area contacted by the first clamping assembly transfer into the spraying range of the nozzle, and the high-pressure sprayer body is operated to spray the unsprayed area, so that the spraying range of the lost foam is more complete, and the spraying angle is richer without manually moving the nozzle, thereby improving the manufacturing quality of the lost foam and saving manpower.

[0008] The first clamping assembly includes a connecting plate, on which three threaded rods are threadedly connected, and the threaded rods are vertically inserted into the connecting plate. A first resistance block is fixed to one end of the three threaded rods close to the center of the spray chamber, and the two connecting plates are fixedly connected to the rotating shaft and the first shaft neck respectively.

[0009] With the above structure, after the first electric telescopic rod and the second electric telescopic rod preliminarily clamp the lost foam, each threaded rod is rotated in turn, and the first contact block contacts the lost foam through the threaded transmission between the threaded rod and the connecting plate, thereby realizing secondary clamping of the lost foam. The accuracy of clamping the lost foam is improved through the preliminary clamping and the secondary clamping, making the clamping more stable.

[0010] The second clamping assembly includes a limiting cylinder, a limiting rod is inserted into the limiting cylinder, the limiting rod is embedded in the limiting cylinder, a second resistance block is fixed to the end of the limiting rod away from the limiting cylinder, a spring is fixed between the second resistance block and the limiting cylinder, there are three limiting cylinders and they are distributed in a ring, infrared heating lamps are arranged between the three limiting cylinders, the six limiting cylinders are fixedly connected to the first mounting plate and the second mounting plate respectively, and the two infrared heating lamps are fixed at the center of the opposite ends of the first mounting plate and the second mounting plate respectively.

[0011] With the above structure, as the first mounting plate and the second mounting plate approach each other, the infrared heating lamp dries the surface of the paint in the area that the second resistance block is about to contact, and then the third electric telescopic rod and the fourth electric telescopic rod continue to operate, so that the second resistance block contacts the lost foam and squeezes the spring, and the limiting rod slides in the limiting cylinder with the second resistance block, so that the second resistance block adapts to the surface shape of the lost foam and clamps it, and the concave-convex engagement of the second resistance block and the limiting cylinder realizes the limitation of the left and right straight line trajectories, and the second resistance block is driven to closely contact the lost foam through the restoring force of the spring, and at the same time, the compressibility of the spring prevents the second resistance block from damaging the lost foam, and the second resistance block is made of silicone rubber, so that the friction force is increased to strengthen the clamping of the lost foam while avoiding damage to the lost foam, and the infrared heating lamp dries the surface of the contact area, so that the second resistance block is prevented from damaging the surface flatness of the undried paint, and provides a non-sticky and non-contaminated contact point for the staff or the external robotic arm during unloading, thereby improving the quality of the lost foam and improving work efficiency.

[0012] A protective mechanism is provided at the front end of the spraying chamber, and the protective mechanism includes a linear motor fixed on the fuselage, and the output end of the linear motor is connected to a connecting block by bolts, and two viewing windows and a baffle are fixed on the top of the connecting block, and the baffle is fixed in the middle of the two viewing windows, and long grooves for the sliding of the viewing windows are provided on the left and right sides of the fuselage, and two fixed plates are fixed at the front end of the baffle, and a third motor is fixed on the fixed plate, and a lead screw is fixed at the output end of the third motor, and a slider is threadedly connected to the lead screw, and a sliding rod is passed through the slider, and the sliding rod is fixed between the two fixed plates, and a square hole for the sliding of the slider is provided in the center of the baffle, and a movable plate is fixed to the rear end of the slider, and a mounting base plate is fixed to the rear end of the movable plate, and the nozzle is fixed to the mounting base plate by bolts.

[0013] With the above structure, when the spraying position needs to move left and right, that is, when the nozzle needs to move left and right, the linear motor drives the connecting block to move left and right linearly, the visual window and the baffle move left and right with the connecting block, the movable plate moves with the baffle, the mounting base moves left and right with the movable plate, and the nozzle moves left and right with the mounting base to achieve left and right movement of the spraying range. During the left and right movement of the nozzle, the visual window slides in the long groove, and the part of the visual window that exceeds the fuselage moves left and right to always keep the front of the spray chamber blocked to prevent the spray paint from spreading from the front of the spray chamber. When the nozzle needs to move up and down, the third motor drives the screw to rotate, and the slide rod acts on the slider To the limit, avoid the slider from rotating with the lead screw, make the slider and the lead screw produce thread transmission to realize the slider up and down linear motion, the movable plate moves up and down with the slider, further realizes the up and down movement of the spraying range, the movable plate is always in an overlapping state with the baffle during the up and down movement, avoids the generation of mist paint output space in front of the spray bin due to the movement of the nozzle, cooperates with the recovery mechanism to realize all-round protection of the spray bin during the spraying process, avoids paint leakage, maintains the air quality of the lost foam manufacturing workshop, protects the workshop environment, and reduces the adverse effects of air flow on the movement trajectory of the mist paint during spraying.

[0014] A first row of wheels is fixed at the bottom of the two viewing windows, and the first row of wheels rolls at the front position of the bottom of the spray chamber. Second row wheels are fixed on both sides of the movable plate. Slide rails are fixed at the rear ends of the two viewing windows, and the two second row wheels roll in the two slide rails respectively.

[0015] With the above structure, during the movement of the viewing window, the first row of wheels rolls on the fuselage with the viewing window, reducing the friction between the viewing window and the fuselage and avoiding wear caused by sliding. During the movement of the movable plate, the second row of wheels rolls on the slide rail with the movable plate. The slide rail limits the movable plate so that the movable plate is closer to the baffle, reducing the gap and thus reducing the possibility of leakage of mist paint. At the same time, the rolling of the second row of wheels reduces friction and makes the movement smoother.

[0016] A recovery mechanism is provided at the rear end of the spraying chamber, and the recovery mechanism includes an exhaust fan. A connecting tube, a recovery box, an air duct and an air cylinder are fixed to the exhaust port of the exhaust fan in sequence through a flange. The air cylinder is fixed to the fuselage. The recovery box, the air duct and the air cylinder are all coated with Teflon coating. The exhaust fan is placed in the equipment chamber.

[0017] With the above structure, the Teflon coating can effectively prevent the adhesion of sticky substances such as paint, keep the recycling box, air duct and the inner wall of the air duct clean and smooth, and the exhaust fan makes the air in the spray chamber move backward. Part of the mist paint contacts the lost foam, and the other part enters the air duct with the air flow. After most of the mist paint particles entering the air duct contact the inner wall at the bend of the air duct, more mist paint particles merge into water droplet-shaped paint particles, and the water droplet-shaped paint particles are close to the inner wall of the air duct. Since the Teflon coating can slide on the inner wall of the air duct and merge into the recycling box with the inner wall of the air duct, most of the paint that has not been sprayed on the lost foam can be recycled, and the recycled paint can be reused to save production costs.

[0018] Guide plates are fixed at the turning points of the inner wall of the air duct, and the guide plates are all facing the direction of the recovery box.

[0019] With the above structure, the mist particles contact the guide plate, and converge at the corner formed by the inner wall of the air duct and the guide plate and flow to the direction of the recovery box. The guide plate is set at the turning point. While increasing the turning angle to make it easier to collect the mist material particles, the water droplet-shaped paint particles are guided toward the recovery box to improve the recovery efficiency.

[0020] An external threaded ring is fixed to the air outlet of the exhaust fan, an internal threaded barrel is threadedly connected to the rear end of the external threaded ring, and a metal dense mesh is fixed to the rear of the inner wall of the internal threaded barrel.

[0021] With the above structure, the surface of the exhaust fan blade is coated with Teflon coating, and some paint particles that are always in the airflow contact the exhaust fan blade and are thrown backwards by the high-speed rotating blade. The paint particles are thrown onto the metal dense net, and an external container can be placed under the metal dense net for collection. The metal dense net can be disassembled and assembled by rotating the external thread ring and the internal thread cylinder, which is easy to clean. The paint particles that have not entered the recycling box can be intercepted during the discharge process through the setting of the metal dense net, thereby reducing the entry of paint particles into the workshop air and further strengthening the workshop environmental protection.

[0022] The anti-blocking mechanism includes a paint bucket, a fixed horizontal plate is fixed on the top of the paint bucket, a fourth motor is fixed at the top center of the fixed horizontal plate, a connecting rod is keyed to the output end of the fourth motor, a scraper and a stirring blade are fixed on the connecting rod in sequence from top to bottom, a filter is fixed at a position below the scraper in the paint bucket, the top of the filter is in contact with the scraper, the connecting rod is passed through the center of the filter, a one-way valve is connected to the lower position of the outer wall of the paint bucket, and the one-way valve is connected to the high-pressure sprayer body through an output pipe.

[0023] With the above structure, the paint is poured into the paint bucket, and the fine paint enters the bottom of the paint bucket through the filter. The fourth motor drives the connecting rod to rotate, and the scraper rotates on the surface of the filter with the connecting rod to scrape the paint accumulated on the surface of the filter. At the same time, the stirring blade stirs the filtered paint with the connecting rod. The high-pressure sprayer body draws in the filtered paint through the output pipe. The one-way valve is set to prevent the paint from flowing back. The rotation of the scraper avoids clogging on the surface of the filter, so that the paint enters the paint bucket more efficiently. The filtering and rotation of the stirring blades keep the paint fine, make it atomized more thoroughly, improve the spraying quality, reduce the possibility of clogging in the paint flow pipeline, and improve production efficiency.

[0024] Compared with the prior art, this lost foam coating spraying device has the following advantages: 1. The distance between the two connecting plates of the first electric telescopic rod and the second electric telescopic rod is extended and retracted to be close to the height of the lost foam, so as to achieve preliminary clamping of the lost foam. The first abutment block is contacted with the lost foam through the threaded transmission between the threaded rod and the connecting plate to achieve secondary clamping of the lost foam. The accuracy of clamping the lost foam is improved through preliminary clamping and secondary clamping, making the clamping more stable. Both the first abutment block and the second abutment block are made of silicone rubber, so as to achieve clamping of the lost foam while avoiding damage to the lost foam. After spraying, the third electric telescopic rod and the fourth electric telescopic rod are extended to bring the second clamping components at both ends close to each other, and the second clamping component is heated by the infrared heating lamp in the second clamping component. The contact area is painted dry, the second clamping assembly rotates with the first mounting plate and drives the lost foam to rotate in the front-rear direction, the lost foam rotates back and forth so that the unsprayed area contacted by the first clamping assembly is transferred into the spraying range of the nozzle, and the high-pressure sprayer body is operated to spray the unsprayed area, so that the spraying range of the lost foam is more complete, and the spraying angle is more abundant without manually moving the nozzle, thereby improving the manufacturing quality of the lost foam and saving manpower. Infrared heating lamps dry the surface of the contact area to prevent the second resistance block from damaging the surface flatness of the undried paint, and provide non-sticky and non-contaminated paint contact points for workers or external robotic arms during material unloading, thereby improving the quality of the lost foam and improving work efficiency.

[0025] 2. The linear motor drives the connecting block to move left and right, and the visual window and the baffle move left and right with the connecting block to realize the left and right movement of the spraying range. During the left and right movement of the nozzle, the visual window slides in the long slot, and the left and right movement of the visual window beyond the fuselage always keeps the shielding in front of the spraying chamber to prevent the spray paint from spreading from the front of the spraying chamber. The third motor drives the lead screw to rotate, and the slide bar limits the slider to the left and right to prevent the slider from rotating with the lead screw, so that the slider and the lead screw generate threaded transmission to realize the up and down linear movement of the slider, and further realize the up and down movement of the spraying range. During the up and down movement of the movable plate, it always overlaps with the baffle to prevent the generation of mist paint in front of the spraying chamber due to the movement of the nozzle. The material output space cooperates with the recovery mechanism to realize all-round protection of the spraying chamber during the spraying process, avoid paint leakage, maintain the air quality of the lost foam manufacturing workshop, protect the workshop environment, and reduce the adverse effect of air flow on the moving trajectory of the mist paint spraying process. During the movement of the visual window, the first row of wheels rolls on the fuselage with the visual window to reduce the friction between the visual window and the fuselage and avoid wear caused by sliding. During the movement of the movable plate, the second row of wheels rolls on the slide rail with the movable plate. The slide rail limits the movable plate to make the movable plate closer to the baffle, reduce the gap, and thus reduce the possibility of leakage of mist paint. At the same time, the rolling of the second row of wheels reduces friction and makes the movement smoother.

[0026] 3. By setting up a recycling mechanism, and the recycling box, air duct, exhaust fan blades and air duct in the recycling mechanism are coated with Teflon coating, the Teflon coating can effectively prevent the adhesion of sticky substances such as paint, and keep the recycling box, air duct and the inner wall of the air duct clean and smooth. The exhaust fan makes the air in the spray chamber move backward. One part of the mist paint contacts the lost foam, and the other part enters the air duct with the air flow. Most of the mist paint particles entering the air duct contact the inner wall at the turning point of the air duct, and more mist paint particles merge into water droplet-shaped paint particles, and the water droplet-shaped paint particles are close to the inner wall of the air duct. Because the Teflon coating can be on the inner wall of the air duct The paint particles that are not sprayed onto the lost foam can be recycled and reused to save production costs. Some paint particles that are always in the air flow contact the exhaust fan blades and are thrown backwards by the high-speed rotating blades. The paint particles are thrown onto the metal dense net, and an external container can be placed under the metal dense net for collection. The metal dense net can be disassembled and assembled by rotating the external thread ring and the internal thread cylinder, which is easy to clean. The paint particles that do not enter the recycling box can be intercepted during the discharge process through the setting of the metal dense net, reducing the entry of paint particles into the workshop air and further strengthening the workshop environmental protection.

[0027] 4. By setting up an anti-blocking mechanism, the fourth motor drives the connecting rod to rotate, and the scraper rotates with the connecting rod on the surface of the filter to scrape the paint accumulated on the surface of the filter. At the same time, the stirring blade stirs the filtered paint with the connecting rod. The high-pressure sprayer body draws in the filtered paint through the output pipe. The one-way valve is set to prevent the paint from flowing back. The rotation of the scraper avoids clogging on the surface of the filter, making the paint enter the paint bucket more efficient. The filtration and rotation of the stirring blades keep the paint fine, making it more thoroughly atomized, improving the spraying quality, reducing the possibility of clogging the paint flow pipeline, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention.

[0029] Figure 2 It is a structural schematic diagram of the fixing mechanism in the present invention.

[0030] Figure 3 It is a structural schematic diagram of the first clamping assembly in the present invention.

[0031] Figure 4 It is a schematic diagram of the structure of the transmission of the first gear and the second gear in the present invention.

[0032] Figure 5 It is a structural schematic diagram of the second clamping assembly in the present invention.

[0033] Figure 6 It is a schematic diagram of the structure in which the limiting cylinder and the limiting rod are embedded in the present invention.

[0034] Figure 7 It is a structural schematic diagram of the step block and the limiting ring groove in the present invention.

[0035] Figure 8 yes Figure 7 A magnified view of the structure at point B.

[0036] Fig. 9 It is a structural schematic diagram of the protection mechanism in the present invention.

[0037] Fig.10 It is a structural schematic diagram of the visible window and baffle part in the present invention.

[0038] Fig.11 It is a structural schematic diagram of the movable plate part in the present invention.

[0039] Fig.12 It is a structural schematic diagram of the second row of wheels in the present invention.

[0040] Fig.13 yes Fig. 9 A magnified view of the structure at center.

[0041] Fig.14It is a structural schematic diagram of the recovery mechanism in the present invention.

[0042] Fig.15 It is a structural schematic diagram of the internal structure of the recovery mechanism in the present invention.

[0043] Fig.16 It is a schematic diagram of the structural explosion of the metal dense mesh part in the present invention.

[0044] Fig.17 It is a structural schematic diagram of the anti-blocking mechanism in the present invention.

[0045] Fig.18 It is a structural schematic diagram of the paint bucket in the longitudinal section of the present invention when viewed from the side.

[0046] In the figure, 1, fuselage; 101, spray chamber; 102, equipment chamber; 2, high-pressure spray machine body; 3, bracket; 4, nozzle; 5, protection mechanism; 501, linear motor; 502, connecting block; 503, visual window; 504, baffle; 505, fixed plate; 506, third motor; 507, lead screw; 508, slider; 509, slide rod; 510, movable plate; 511, installation base plate; 512, first row wheel; 513, slide rail; 514, second row of wheels; 6, fixing mechanism; 601, first electric telescopic rod; 602, first bearing; 603, first journal; 604, connecting plate; 605, threaded rod; 606, first abutment block; 607, second electric telescopic rod; 608, mounting frame; 609, first motor; 610, rotating shaft; 611, mounting frame; 612, second motor; 613, first gear; 61 4. Second gear; 615. Third electric telescopic rod; 616. First mounting plate; 617. Fourth electric telescopic rod; 618. Second bearing; 619. Second journal; 620. Second mounting plate; 621. Limit cylinder; 622. Limit rod; 623. Second abutment block; 624. Spring; 625. Limit ring groove; 626. Step block; 627. Infrared heating lamp; 7. Anti-blocking mechanism; 701. Paint bucket ; 702, fixed horizontal plate; 703, fourth motor; 704, connecting rod; 705, scraper; 706, stirring blade; 707, filter; 708, one-way valve; 709, output pipe; 8, recovery mechanism; 801, exhaust fan; 802, recovery box; 803, air duct; 804, air cylinder; 805, guide plate; 806, connecting tube; 807, external thread ring; 808, internal thread tube; 809, metal mesh. DETAILED DESCRIPTION

[0047] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0048] like Figure 1-Figure 18As shown, the lost foam coating spraying device comprises a body 1, which is provided with a spraying chamber 101 and an equipment chamber 102 from top to bottom, a bracket 3 is placed in front of the body 1, a high-pressure spraying machine body 2 is fixed on the bracket 3, an anti-blocking mechanism 7 is provided at the input end of the high-pressure spraying machine body 2, and a nozzle 4 is fixed at the output end of the high-pressure spraying machine body 2 through a hose, and the nozzle 4 is arranged in the spraying chamber 101; The fuselage 1 is provided with a fixing mechanism 6, which includes a first electric telescopic rod 601 passing through the top of the fuselage 1, a first bearing 602 is interference-fitted at the bottom of the first electric telescopic rod 601, and a first shaft neck 603 is keyed to the inner wall of the first bearing 602, and the fixing mechanism 6 also includes a rotating shaft 610 passing through the bottom of the spraying chamber 101, the rotating shaft 610 and the first shaft neck 603 are both on the same vertical horizontal line, and the rotating shaft 610 and the first shaft neck 603 are both provided with a first clamping assembly at the facing ends, a second electric telescopic rod 607 is fixed to the bottom of the equipment chamber 102, a mounting frame 608 is fixed to the top of the second electric telescopic rod 607, a first motor 609 is fixed to the inner wall of the mounting frame 608, and an output end of the first motor 609 is keyed to the rotating shaft 610; In this embodiment, the high-pressure sprayer body 2, the first electric telescopic rod 601, the second electric telescopic rod 607 and the first motor 609 are all prior art. The distance between the two connecting plates 604 is close to the height of the lost foam by telescoping the first electric telescopic rod 601 and the second electric telescopic rod 607, so as to achieve preliminary clamping of the lost foam, and the second clamping of the lost foam is performed by the first clamping component. After the clamping is completed, the high-pressure sprayer body 2 is operated to spray the paint to the lost foam through the nozzle 4. During the spraying process, the first motor 609 drives the rotating shaft 610 to rotate, and the first clamping component below moves with the rotating shaft. 610 rotates, the lost foam rotates with the first clamping assembly below, the first clamping assembly above rotates with the lost foam, the first journal 603 drives the first bearing 602 to rotate with the first clamping assembly, so that the first clamping assembly above can rotate more flexibly and reduce resistance, thereby reducing the damage to the lost foam caused by resistance. At the same time, the rotation makes the spraying angle more flexible, and the movement of the nozzle 4 is reduced by the rotation of the lost foam itself, so that the nozzle 4 can always be fixed on one side of the fuselage 1, reducing labor consumption, and the first resistance block 606 is made of silicone rubber, which can achieve clamping of the lost foam while avoiding damage to the lost foam.

[0049] A mounting frame 611 is fixed on the left side of the fuselage 1, a second motor 612 is fixed on the left side of the mounting frame 611, a first gear 613 is keyed to the output end of the second motor 612, a limiting ring groove 625 is provided on the left side of the fuselage 1, a step block 626 is slidably connected in the limiting ring groove 625, and the step block 626 is adapted to the limiting ring groove 625, a second gear 614 is fixed on the left side of the step block 626, the second gear 614 is meshed with the first gear 613, a third electric telescopic rod 615 is fixed to the second gear 614, and the third electric telescopic rod 615 is on the right side. A first mounting plate 616 is fixed to the end, a fourth electric telescopic rod 617 is fixed to the right side of the fuselage 1, and the fourth electric telescopic rod 617 is connected to the spray chamber 101, a second bearing 618 is interference fit on the left side of the fourth electric telescopic rod 617, a second shaft neck 619 is key-connected to the second bearing 618, a second mounting plate 620 is fixed to the left end of the second shaft neck 619, the first mounting plate 616 and the second mounting plate 620 are both on the same horizontal line, and second clamping components are provided at the opposite ends of the first mounting plate 616 and the second mounting plate 620.

[0050] In this embodiment, the second motor 612, the third electric telescopic rod 615 and the fourth electric telescopic rod 617 are all prior art, and the second motor 612 indirectly drives the lost foam to rotate back and forth in a single circle. After spraying, the third electric telescopic rod 615 and the fourth electric telescopic rod 617 are extended to make the second clamping components at both ends close to each other, and the infrared heating lamp 627 in the second clamping component is used to dry the surface coating of the area to be contacted by the second clamping component. Then, the third electric telescopic rod 615 and the fourth electric telescopic rod 617 continue to extend until the second clamping component contacts the lost foam to clamp the lost foam. Then, the second motor 612 drives the first gear 613 to rotate, and the first gear 613 is transmitted to the second gear 614. The step block 626 slides in the specified circular trajectory of the limiting ring groove 625 with the second gear 614, and the limiting ring groove 625 is adapted to the step block 626. To prevent it from moving left and right, the second gear 614 drives the third electric telescopic rod 615 to rotate, the first mounting plate 616 rotates with the third electric telescopic rod 615, the second clamping assembly rotates with the first mounting plate 616 and drives the lost foam to rotate in the front and rear directions, the lost foam drives the second clamping assembly on the right side to rotate, the second mounting plate 620 rotates with the second clamping assembly, the second journal 619 rotates with the second mounting plate 620 and drives the inner wall of the second bearing 618 to rotate, so that the forward and backward rotation of the lost foam is more flexible, the resistance is reduced, thereby reducing the damage to the lost foam caused by the resistance, and the forward and backward rotation makes the unsprayed area contacted by the first clamping assembly transferred into the spraying range of the nozzle 4, and the high-pressure sprayer body 2 is operated to spray the unsprayed area, so that the spraying range of the lost foam is more complete, and the spraying angle is richer without manually moving the nozzle 4, thereby improving the manufacturing quality of the lost foam and saving manpower.

[0051] The first clamping assembly includes a connecting disk 604, on which three threaded rods 605 are threadedly connected, and the threaded rods 605 are vertically penetrated on the connecting disk 604, and the ends of the three threaded rods 605 close to the center of the spray chamber 101 are fixed with a first resistance block 606, and the two connecting disks 604 are respectively fixedly connected to the rotating shaft 610 and the first shaft neck 603. In this embodiment, after the first electric telescopic rod 601 and the second electric telescopic rod 607 initially clamp the lost foam, each threaded rod 605 is rotated in turn, and the first resistance block 606 is brought into contact with the lost foam through the threaded transmission between the threaded rod 605 and the connecting disk 604, so as to realize secondary clamping of the lost foam, and the accuracy of clamping the lost foam is improved through initial clamping and secondary clamping, so that the clamping is more stable.

[0052] The second clamping assembly includes a limiting cylinder 621, in which a limiting rod 622 is inserted, the limiting rod 622 is engaged with the limiting cylinder 621, a second resistance block 623 is fixed to the end of the limiting rod 622 away from the limiting cylinder 621, a spring 624 is fixed between the second resistance block 623 and the limiting cylinder 621, the number of the limiting cylinders 621 is three and they are distributed in a ring, an infrared heating lamp 627 is arranged between the three limiting cylinders 621, the six limiting cylinders 621 are respectively fixedly connected to the first mounting plate 616 and the second mounting plate 620, and the two infrared heating lamps 627 are respectively fixed at the center of the opposite ends of the first mounting plate 616 and the second mounting plate 620.

[0053] In this embodiment, the infrared heating lamp 627 is a prior art. As the first mounting plate 616 and the second mounting plate 620 approach each other, the infrared heating lamp 627 irradiates the surface of the paint in the area that the second contact block 623 is about to contact, and then the third electric telescopic rod 615 and the fourth electric telescopic rod 617 continue to operate, so that the second contact block 623 contacts the lost foam and squeezes the spring 624. The limiting rod 622 slides with the second contact block 623 in the limiting cylinder 621, so that the second contact block 623 adapts to the surface shape of the lost foam and clamps it. The concave-convex fitting of the second contact block 623 and the limiting cylinder 621 is realized. The left and right straight line trajectories are limited, and the restoring force of the spring 624 drives the second resistance block 623 to closely contact the lost foam. At the same time, the compressibility of the spring 624 prevents the second resistance block 623 from causing damage to the lost foam. The second resistance block 623 is made of silicone rubber, which improves the friction force and strengthens the clamping of the lost foam while avoiding damage to the lost foam. The infrared heating lamp 627 dries the surface of the contact area to prevent the second resistance block 623 from damaging the surface flatness of the undried paint, and provides a non-sticky and non-contaminated contact point for the staff or the external robotic arm when unloading, thereby improving the quality of the lost foam and improving work efficiency.

[0054] A protective mechanism 5 is provided at the front end of the spray chamber 101. The protective mechanism 5 includes a linear motor 501 fixed on the fuselage 1. The output end of the linear motor 501 is connected to a connecting block 502 by bolts. Two visual windows 503 and a baffle 504 are fixed on the top of the connecting block 502. The baffle 504 is fixed between the two visual windows 503. Long grooves for sliding the visual windows 503 are provided on the left and right sides of the fuselage 1. Two fixing plates 505 are fixed at the front end of the baffle 504. The fixing plates 505 A third motor 506 is fixed on it, a lead screw 507 is fixed on the output end of the third motor 506, a slider 508 is threadedly connected to the lead screw 507, a slide bar 509 is passed through the slider 508, the slide bar 509 is fixed between the two fixed plates 505, a square hole for the slider 508 to slide is opened in the center of the baffle 504, a movable plate 510 is fixed to the rear end of the slider 508, a mounting base plate 511 is fixed to the rear end of the movable plate 510, and the nozzle 4 is fixed to the mounting base plate 511 by bolts.

[0055] In this embodiment, the linear motor 501 and the third motor 506 are both prior art. When the spraying position needs to move left and right, that is, when the nozzle 4 needs to move left and right, the linear motor 501 drives the connecting block 502 to move left and right in a straight line, and the visual window 503 and the baffle 504 move left and right with the connecting block 502, the movable plate 510 moves with the baffle 504, the mounting base plate 511 moves left and right with the movable plate 510, and the nozzle 4 moves left and right with the mounting base plate 511, so as to realize the left and right movement of the spraying range. During the left and right movement of the nozzle 4, the visual window 503 slides in the long groove, and the visual window 503 moves left and right beyond the fuselage 1 part to always keep the front of the spray chamber 101 blocked to prevent the spray paint from spreading from the front of the spray chamber 101. When the nozzle 4 needs to move up and down, the third motor 50 6 drives the lead screw 507 to rotate, and the slide bar 509 limits the slider 508 to the left and right, preventing the slider 508 from rotating with the lead screw 507, so that the slider 508 and the lead screw 507 generate threaded transmission to realize the slider 508 to move up and down in a straight line, and the movable plate 510 moves up and down with the slider 508 to further realize the up and down movement of the spraying range. During the up and down movement of the movable plate 510, it is always in an overlapping state with the baffle 504, so as to avoid the generation of a mist coating output space in front of the spraying chamber 101 due to the movement of the nozzle 4, and cooperate with the recovery mechanism 8 to realize all-round protection of the spraying chamber 101 during the spraying process, avoid coating leakage, maintain the air quality of the lost foam manufacturing workshop, protect the workshop environment, and reduce the adverse effect of air flow on the moving trajectory of the mist coating during the spraying process.

[0056] A first row of wheels 512 is fixed at the bottom of the two viewing windows 503, and the first row of wheels 512 rolls at a front position at the bottom of the spray chamber 101. Second row wheels 514 are fixed on both sides of the movable plate 510. Slide rails 513 are fixed to the rear ends of the two viewing windows 503, and the two second row wheels 514 roll in the two slide rails 513 respectively. In this embodiment, during the movement of the viewing windows 503, the first row of wheels 512 rolls on the fuselage 1 with the viewing windows 503, reducing the friction between the viewing windows 503 and the fuselage 1 and avoiding wear caused by sliding. During the movement of the movable plate 510, the second row of wheels 514 rolls in the slide rails 513 with the movable plate 510, and the slide rails 513 limit the movable plate 510 so that the movable plate 510 is closer to the baffle 504, reducing the gap, thereby reducing the possibility of leakage of mist paint. At the same time, the rolling of the second row of wheels 514 reduces friction, making the movement smoother.

[0057] A recovery mechanism 8 is provided at the rear end of the spraying chamber 101. The recovery mechanism 8 includes an exhaust fan 801. The exhaust port of the exhaust fan 801 is fixed with a connecting tube 806, a recovery box 802, an air duct 803 and an air cylinder 804 in sequence through a flange. The air cylinder 804 is fixed to the fuselage 1. The recovery box 802, the air duct 803 and the air cylinder 804 are all coated with a Teflon coating. The exhaust fan 801 is placed in the equipment chamber 102. In this embodiment, the exhaust fan 801 and the Teflon coating are both prior arts. The Teflon coating can effectively prevent the adhesion of sticky substances such as paint, keep the inner walls of the recovery box 802, the air duct 803 and the air cylinder 804 clean and smooth, and the spraying process The exhaust fan 801 is in motion, and the exhaust fan 801 makes the air in the spray chamber 101 move backward. A part of the mist paint contacts the lost foam, and the other part enters the wind tube 804 with the air flow. After most of the mist paint particles entering the wind tube 804 contact the inner wall at the turning point of the air duct 803, more mist paint particles merge into water droplet-shaped paint particles, and the water droplet-shaped paint particles are close to the inner wall of the air duct 803. Due to the Teflon coating, the water droplet-shaped paint particles can slide on the inner wall of the air duct 803 and merge into the recovery box 802 with the inner wall of the air duct 803, thereby realizing the recovery of most of the paint that has not been sprayed on the lost foam, and the recovered paint can be reused to save production costs.

[0058] Guide plates 805 are fixed at the turning points of the inner wall of the air duct 803, and the guide plates 805 are all facing the direction of the recovery box 802. In the present embodiment, the mist particles contact the guide plates 805, and converge at the corner formed by the inner wall of the air duct 803 and the guide plates 805 and flow to the direction of the recovery box 802. The guide plates 805 are arranged at the turning points, which increases the turning angle to make it easier to collect the mist material particles, and guides the water droplet-shaped paint particles toward the recovery box 802, thereby improving the recovery efficiency.

[0059] An external threaded ring 807 is fixed to the air outlet of the exhaust fan 801, and an internal threaded barrel 808 is threadedly connected to the rear end of the external threaded ring 807, and a metal dense net 809 is fixed to the rear of the inner wall of the internal threaded barrel 808. In this embodiment, the surface of the fan blade of the exhaust fan 801 is coated with a Teflon coating, and some paint particles that are always in the air flow contact the fan blade of the exhaust fan 801, and are thrown backward by the high-speed rotating fan blade, and the paint particles are thrown onto the metal dense net 809. An external container can be placed under the metal dense net 809 for collection. The metal dense net 809 can be disassembled and assembled by rotating the external threaded ring 807 and the internal threaded barrel 808, which is convenient for cleaning. The metal dense net 809 is set to intercept the paint particles that have not entered the recycling box 802 during the discharge process, reduce the paint particles from entering the workshop air, and further strengthen the workshop environment protection.

[0060] The anti-blocking mechanism 7 includes a paint bucket 701, a fixed horizontal plate 702 is fixed on the top of the paint bucket 701, a fourth motor 703 is fixed at the top center of the fixed horizontal plate 702, a connecting rod 704 is keyed to the output end of the fourth motor 703, a scraper 705 and a stirring paddle 706 are fixed on the connecting rod 704 from top to bottom, a filter screen 707 is fixed at a position below the scraper screen 705 in the paint bucket 701, the top of the filter screen 707 is in contact with the scraper screen 705, the connecting rod 704 is passed through the center of the filter screen 707, a one-way valve 708 is connected to the lower position of the outer wall of the paint bucket 701, and the one-way valve 708 is connected to the high-pressure sprayer body 2 through an output pipe 709.

[0061] In this embodiment, the paint is poured into the paint bucket 701, and the fine paint enters the bottom of the paint bucket 701 through the filter 707. The fourth motor 703 drives the connecting rod 704 to rotate, and the scraper 705 rotates on the surface of the filter 707 with the connecting rod 704 to scrape the paint accumulated on the surface of the filter 707. At the same time, the stirring blade 706 stirs the filtered paint with the connecting rod 704. The high-pressure sprayer body 2 draws in the filtered paint through the output pipe 709. The setting of the one-way valve 708 prevents the paint from flowing back. The rotation of the scraper 705 avoids clogging of the surface of the filter 707, so that the paint enters the paint bucket 701 more efficiently. The filtering and rotation of the stirring blade 706 keep the paint fine, make it more thoroughly atomized, improve the spraying quality, reduce the possibility of clogging of the paint flow pipeline, and improve production efficiency.

[0062] The working principle of the present invention is as follows: the paint is poured into the paint bucket 701, and the fine paint enters the bottom of the paint bucket 701 through the filter screen 707. The fourth motor 703 drives the connecting rod 704 to rotate, and the scraper 705 rotates on the surface of the filter screen 707 with the connecting rod 704 to scrape the paint accumulated on the surface of the filter screen 707. At the same time, the stirring blade 706 stirs the filtered paint with the connecting rod 704. The high-pressure sprayer body 2 draws in the filtered paint through the output pipe 709. The one-way valve 708 is set to prevent the paint from flowing back. The distance between the two connecting plates 604 is close to the height of the lost foam through the extension of the first electric telescopic rod 601 and the second electric telescopic rod 607, so as to achieve preliminary clamping of the lost foam, and the second clamping assembly is used to clamp the lost foam for the second time. After the first electric telescopic rod 601 and the second electric telescopic rod 607 initially clamp the lost foam, each threaded rod 605 is rotated in turn, and the first contact block 606 contacts the lost foam through the threaded transmission between the threaded rod 605 and the connecting plate 604, so as to realize the secondary clamping of the lost foam. After the clamping is completed, the high-pressure spraying machine body 2 is operated to spray the paint to the lost foam through the nozzle 4. During the spraying process, the first motor 609 drives the rotating shaft 610 to rotate, and the first clamping assembly below rotates with the rotating shaft 610, the lost foam rotates with the first clamping assembly below, and the first clamping assembly above rotates with the lost foam. The first shaft neck 603 drives the first bearing 602 to rotate with the first clamping assembly. When the spraying position needs to move left and right, that is, when the nozzle 4 needs to move left and right, the linear The motor 501 drives the connecting block 502 to move linearly left and right, the visual window 503 and the baffle 504 move left and right with the connecting block 502, the movable plate 510 moves with the baffle 504, the mounting base plate 511 moves left and right with the movable plate 510, and the nozzle 4 moves left and right with the mounting base plate 511, so as to realize the left and right movement of the spraying range. During the left and right movement of the nozzle 4, the visual window 503 slides in the long groove. During the movement of the visual window 503, the first row of wheels 512 rolls on the fuselage 1 with the visual window 503. The part of the visual window 503 that exceeds the fuselage 1 moves left and right to always keep the front of the spray chamber 101 blocked to prevent the spray paint from spreading from the front of the spray chamber 101. When the nozzle 4 needs to move up and down, the third motor 506 drives the lead screw 507 to rotate, and the slide bar 509 limits the slider 508 to the left and right, preventing the slider 508 from rotating with the lead screw 507, so that the slider 508 and the lead screw 507 generate threaded transmission to realize the slider 508 moving up and down in a straight line, and the movable plate 510 moves up and down with the slider 508. During the movement of the movable plate 510, the second row of wheels 514 rolls with the movable plate 510 in the slide rail 513, and the slide rail 513 limits the movable plate 510 to make the movable plate 510 closer to the baffle 504, further realizing the up and down movement of the spraying range. During the up and down movement of the movable plate 510, it is always in an overlapping state with the baffle 504. During the spraying process, the exhaust fan 801 moves, and the exhaust fan 801 makes the air in the spray chamber 101 move backward, and part of the mist coating contacts the lost foam.The other part enters the air duct 804 with the air flow. After most of the mist paint particles entering the air duct 804 contact the inner wall at the turning point of the air duct 803, more mist paint particles merge into water drop-shaped paint particles, and the water drop-shaped paint particles are close to the inner wall of the air duct 803. Since the Teflon coating can slide on the inner wall of the air duct 803, the mist particles contact the guide plate 805, and converge at the corner formed by the inner wall of the air duct 803 and the guide plate 805 and flow to the direction of the recovery box 802, and merge into the recovery box 802 along the inner wall of the air duct 803, so that most of the paint that has not been sprayed on the lost foam is recovered. Some paint particles that are always in the air flow contact the fan blades of the exhaust fan 801, and are thrown backwards by the high-speed rotating fan blades, and the paint particles are thrown to the metal The metal mesh 809 can be placed on the outer container below the metal mesh 809 for collection. The metal mesh 809 can be disassembled and assembled by rotating the outer thread ring 807 and the inner thread cylinder 808. After the spraying is completed, the third electric telescopic rod 615 and the fourth electric telescopic rod 617 are extended to make the second clamping components at both ends close to each other, and the infrared heating lamp 627 in the second clamping component is used to dry the surface paint of the area that the second clamping component is about to contact. As the first mounting plate 616 and the second mounting plate 620 approach each other, the infrared heating lamp 627 is used to dry the surface paint of the area that the second contact block 623 is about to contact. Then, the third electric telescopic rod 615 and the fourth electric telescopic rod 617 are continued to operate to make the second contact block 6 23 contacts the lost mold and squeezes the spring 624, the limiting rod 622 slides with the second resistance block 623 in the limiting cylinder 621, so that the second resistance block 623 adapts to the surface shape of the lost mold and clamps it, and the concave-convex fitting of the second resistance block 623 and the limiting cylinder 621 realizes the limitation of the left and right straight line tracks, and the second resistance block 623 is driven to closely contact the lost mold by the restoring force of the spring 624, and then the third electric telescopic rod 615 and the fourth electric telescopic rod 617 continue to extend until the second clamping assembly contacts the lost mold to clamp the lost mold, and then the second motor 612 drives the first gear 613 to rotate, and the first gear 613 is transmitted to the second gear 614, and the step block 626 is limited with the second gear 614 The ring groove 625 slides in the prescribed circular track, and the limiting ring groove 625 prevents it from moving left and right by adapting to the step block 626. The second gear 614 drives the third electric telescopic rod 615 to rotate, and the first mounting plate 616 rotates with the third electric telescopic rod 615. The second clamping assembly rotates with the first mounting plate 616 and drives the lost mold to rotate in the front and back directions. The lost mold drives the second clamping assembly on the right to rotate, and the second mounting plate 620 rotates with the second clamping assembly. The second journal 619 rotates with the second mounting plate 620 and drives the inner wall of the second bearing 618 to rotate. The forward and backward rotation makes the unsprayed area contacted by the first clamping assembly turn into the spraying range of the nozzle 4, and the high-pressure sprayer body 2 is operated to spray the unsprayed area.

[0063] In summary, by setting up a fixing mechanism, the spraying range of the lost foam can be more complete, and the spraying angle can be more versatile without manually moving the nozzle.

[0064] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A lost foam coating spraying device, comprising a body (1), characterized in that: The machine body (1) is provided with a spray chamber (101) and an equipment chamber (102) in sequence from top to bottom; a bracket (3) is placed in front of the machine body (1); a high-pressure spray machine body (2) is fixed on the bracket (3); an anti-blocking mechanism (7) is provided at the input end of the high-pressure spray machine body (2); and a nozzle (4) is fixed at the output end of the high-pressure spray machine body (2) via a hose; the nozzle (4) is arranged in the spray chamber (101); The fuselage (1) is provided with a fixing mechanism (6), the fixing mechanism (6) comprising a first electric telescopic rod (601) passing through the top of the fuselage (1), a first bearing (602) being interference-fitted at the bottom of the first electric telescopic rod (601), a first shaft neck (603) being key-connected to the inner wall of the first bearing (602), the fixing mechanism (6) further comprising a rotating shaft (610) passing through the bottom of the spray chamber (101), the rotating shaft (610) and the first shaft neck (603) being both located on the same vertical horizontal line, and first clamping assemblies being provided at the opposite ends of the rotating shaft (610) and the first shaft neck (603), a second electric telescopic rod (607) being fixed at the bottom of the equipment chamber (102), a mounting frame (608) being fixed at the top of the second electric telescopic rod (607), a first motor (609) being fixed to the inner wall of the mounting frame (608), and an output end of the first motor (609) being key-connected to the rotating shaft (610); A mounting frame (611) is fixed on the left side of the body (1), a second motor (612) is fixed on the left side of the mounting frame (611), an output end of the second motor (612) is key-connected to a first gear (613), a limiting ring groove (625) is provided on the left side of the body (1), a step block (626) is slidably connected in the limiting ring groove (625), and the step block (626) is adapted to the limiting ring groove (625), a second gear (614) is fixed on the left side of the step block (626), the second gear (614) is meshed with the first gear (613), a third electric telescopic rod (615) is fixed to the second gear (614), and the third electric telescopic rod (615) is 15) A first mounting plate (616) is fixed on the right end, a fourth electric telescopic rod (617) is fixed on the right side of the fuselage (1), and the fourth electric telescopic rod (617) is connected to the spray chamber (101), a second bearing (618) is interference fit on the left side of the fourth electric telescopic rod (617), a second shaft neck (619) is key-connected in the second bearing (618), a second mounting plate (620) is fixed on the left end of the second shaft neck (619), the first mounting plate (616) and the second mounting plate (620) are both on the same horizontal line, and second clamping components are provided at the opposite ends of the first mounting plate (616) and the second mounting plate (620).

2. A lost foam coating spraying device according to claim 1, characterized in that: The first clamping assembly comprises a connecting disk (604), three threaded rods (605) are threadedly connected to the connecting disk (604), and the threaded rods (605) are vertically inserted into the connecting disk (604), and a first abutment block (606) is fixed to one end of the three threaded rods (605) close to the center of the spray chamber (101), and the two connecting disks (604) are respectively fixedly connected to the rotating shaft (610) and the first shaft neck (603).

3. A lost foam coating spraying device according to claim 1, characterized in that: The second clamping assembly comprises a limiting cylinder (621), a limiting rod (622) is inserted into the limiting cylinder (621), the limiting rod (622) is embedded in the limiting cylinder (621), a second resistance block (623) is fixed to one end of the limiting rod (622) away from the limiting cylinder (621), a spring (624) is fixed between the second resistance block (623) and the limiting cylinder (621), the number of the limiting cylinders (621) is three and they are distributed in a ring shape, an infrared heating lamp (627) is arranged between the three limiting cylinders (621), the six limiting cylinders (621) are respectively fixedly connected to the first mounting plate (616) and the second mounting plate (620), and the two infrared heating lamps (627) are respectively fixed at the center of the opposite ends of the first mounting plate (616) and the second mounting plate (620).

4. A lost foam coating spraying device according to claim 1, characterized in that: The front end of the spray chamber (101) is provided with a protective mechanism (5), the protective mechanism (5) comprising a linear motor (501) fixed on the body (1), the output end of the linear motor (501) being connected to a connecting block (502) via bolts, two visual windows (503) and a baffle (504) being fixed on the top of the connecting block (502), and the baffle (504) being fixed between the two visual windows (503), long grooves for the visual windows (503) to slide are provided on the left and right sides of the body (1), and two fixing plates (505) are fixed on the front end of the baffle (504), and the fixing plates (505) are fixed on the top of the baffle (504). ) is fixed on the baffle plate (504), a lead screw (507) is fixed on the output end of the third motor (506), a slider (508) is threadedly connected to the lead screw (507), a slide bar (509) is passed through the slide bar (508), the slide bar (509) is fixed between the two fixed plates (505), a square hole for the slide bar (508) to slide is opened in the center of the baffle plate (504), a movable plate (510) is fixed to the rear end of the slide bar (508), a mounting base plate (511) is fixed to the rear end of the movable plate (510), and the nozzle (4) is fixed to the mounting base plate (511) by bolts.

5. A lost foam coating spraying device according to claim 4, characterized in that: A first row of wheels (512) is fixed at the bottom of the two viewing windows (503), and the first row of wheels (512) rolls at a front position at the bottom of the spray chamber (101). Second row wheels (514) are fixed on both left and right sides of the movable plate (510). Slide rails (513) are fixed at the rear ends of the two viewing windows (503), and the two second row wheels (514) roll in the two slide rails (513) respectively.

6. A lost foam coating spraying device according to claim 1, characterized in that: The spray chamber (101) is provided with a recovery mechanism (8) at the rear end thereof. The recovery mechanism (8) comprises an exhaust fan (801). A connecting tube (806), a recovery box (802), an air duct (803) and an air cylinder (804) are fixed in sequence to the exhaust port of the exhaust fan (801) via a flange. The air cylinder (804) is fixed to the machine body (1). The recovery box (802), the air duct (803) and the air cylinder (804) are all coated with a Teflon coating. The exhaust fan (801) is placed in the equipment chamber (102).

7. A lost foam coating spraying device according to claim 6, characterized in that: Guide plates (805) are fixed at the turning points of the inner wall of the air duct (803), and the guide plates (805) are all facing the direction of the recovery box (802).

8. The lost foam coating spraying device according to claim 6, characterized in that: An external threaded ring (807) is fixed to the air outlet of the exhaust fan (801), an internal threaded tube (808) is threadedly connected to the rear end of the external threaded ring (807), and a metal dense mesh (809) is fixed to the rear of the inner wall of the internal threaded tube (808).

9. The lost foam coating spraying device according to claim 1, characterized in that: The anti-blocking mechanism (7) comprises a paint bucket (701), a fixed horizontal plate (702) is fixed on the top of the paint bucket (701), a fourth motor (703) is fixed at the center of the top of the fixed horizontal plate (702), a connecting rod (704) is keyed to the output end of the fourth motor (703), a scraper (705) and a stirring blade (706) are fixed on the connecting rod (704) in order from top to bottom, a filter screen (707) is fixed at a position below the scraper (705) in the paint bucket (701), the top of the filter screen (707 is in contact with the scraper (705), the connecting rod (704) is passed through the center of the filter screen (707), a one-way valve (708) is connected to the lower position of the outer wall of the paint bucket (701), and the one-way valve (708) is connected to the high-pressure spray machine body (2) via an output pipe (709).

Images