Lost foam white film drying production line

Abstract

The invention provides an evanescent mode white mold drying production line, belongs to the technical field of evanescent mode production, and solves the technical problems that an existing evanescent mode can be collided and deformed in the moving process through self-weight transfer, a continuous drying device needs to manually transfer and paint the dried white mold, the painting operation is troublesome and the like. The lost foam white film drying production line comprises a support, a linear motor is fixed to the support, three sliding tables are fixed to the output end of the linear motor, first electric telescopic rods are fixed to the front ends of the sliding tables through bolts, a circular plate is fixed to the lower portions of the first electric telescopic rods through bolts, and a first clamping part is arranged at the bottom of the circular plate; a paint spraying mechanism is arranged below the left first clamping part and the right first clamping part and comprises a base, a high-pressure spraying machine is fixed to the upper portion of the base, a rotating cylinder is fixed to the output end of the high-pressure spraying machine, and an outer cylinder is rotationally connected to the outside of the rotating cylinder through a containing rod. The device has the advantages that the dried white mold does not need to be continuously coated with a coating manually, and collision and abrasion are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of lost foam production, and relates to a drying production line, in particular to a lost foam white film drying production line. Background Art

[0002] Lost foam casting is an advanced casting technology that uses soluble molds to produce metal parts. The manufacturing process of lost foam white mold mainly includes the steps of mold making, pre-foaming, drying / maturation, molding foaming and bonding combination. The drying process of lost foam white film is achieved through specific drying process and equipment. After the model is made, a layer of coating of a certain thickness needs to be applied to the surface to form the inner shell of the casting mold. Generally, it is applied two to three times to make the coating thickness 0.5-2mm. Each layer of coating must be dried after it is applied before the next round of painting or shaping can be carried out. Among them, the quality of the drying process and drying equipment largely determines the success or failure of the quality of the white film. In the prior art, if the lost foam is dried by airing, the time is too long, and it needs to be taken out of the painting equipment one by one and hung again, which has low work efficiency. However, the drying method is adopted. Due to the unreasonable structural design of the drying equipment used, the drying of each part is uneven, the drying degree is different, and the drying time is long.

[0003] After searching, it is found that a continuous drying device for lost foam coating is disclosed in Chinese patent literature [Application No.: CN202310382276.X; Publication No.: CN116099987A]. After the lost foam is dipped in slurry, the continuous drying device for lost foam coating can automatically place multiple lost foams in the drying rack by rotating the containing rack and the loading rack, and then the drying rack can be driven by the driving rack to move in the drying room, thereby continuously drying the lost foam.

[0004] The continuous drying device for lost foam coating disclosed in the patent can preheat the lost foam to prevent the slurry from cracking. After a period of time, the lost foam can be placed in the drying room for further drying by the sun and wind. In addition, multiple lost foams can be automatically placed at one time without the participation of staff, which reduces the labor intensity of staff and improves work efficiency. However, the continuous drying device for lost foam coating realizes position transfer through the gravity movement of the lost foam in the device, so that the lost foam will be bumped and deformed during the movement. In addition, the drying production of the lost foam white mold requires painting again after drying for a certain period of time. The existing continuous drying device also requires the white mold in drying to be manually transferred and painted, which makes the painting operation troublesome. 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 white film drying production line. The technical problem to be solved by the invention is: how to achieve the white mold after drying without the need for manual coating and reduce bumps and wear.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A lost foam white film drying production line, comprising a bracket, a linear motor is fixed on the bracket, three slides are fixed on the output end of the linear motor, a first electric telescopic rod is fixed to the front end of each slide by bolts, a circular plate is fixed to the bottom of the first electric telescopic rod by bolts, a first clamping part is arranged at the bottom of the circular plate, a paint spraying mechanism is arranged below the left and right first clamping parts, the paint spraying mechanism comprises a base, a high-pressure spraying machine is fixed on the top of the base, a rotating drum is fixed to the output end of the high-pressure spraying machine, an outer cylinder is rotatably connected to the outside of the rotating drum by a placing rod, a through hole is provided at the front end of the outer cylinder, teeth are provided at the position of the rotating drum corresponding to the through hole, a third motor is fixed to the front end of the outer cylinder, a third gear is fixed to the output end of the third motor, the third gear is meshed with the teeth, the inner diameter of the outer cylinder is the same as the outer diameter of the circular plate, a fixing ring is fixed to the outside of the outer cylinder, and a third electric telescopic rod is fixed to the bottom of the fixing ring; A paint box is provided below the first clamping part located in the middle, and a fixed leg is fixed at the bottom of the paint box. Two mounting angle pieces are fixed at the bottom of the paint box, and a first motor is fixed on the two mounting angle pieces. Six rotating rods are passed through the bottom of the paint box, and the six rotating rods are symmetrically distributed front and back in a group of three. The two first motors are connected to one of the rotating rods in each group through a coupling, and a stirring paddle is fixed on the rotating rod, and the stirring paddle is located below the metal mesh. The rotating rods located on the left and right sides are keyed to the first sprocket, and the rotating rod located in the middle position is keyed to the second sprocket and the second gear, and the first sprocket and the second sprocket are meshed with chains, and the bottom of the paint box is rotatably connected to the first gear, and a limit frame is fixed on the front and back sides of the paint box, and a rack slides in the limit frame, and the rack meshes with the first gear. A connecting rod is vertically fixed to the top of the rack, and a mounting box is fixed to the top of the connecting rod, and a long-haired paint brush is fixed to the bottom of the mounting box, and the long-haired paint brush is located on the inner wall of the paint box.

[0007] The working principle of the present invention is as follows: the staff will face the position on the white mold that needs to be painted forward, and fix the white mold on the first clamping part above the paint spraying mechanism, or clamp the white mold that needs to be sprayed with a second layer of paint from the second clamping part through the first clamping part after drying, operate the third electric telescopic rod, the fixing ring rises as the third electric telescopic rod is extended, and the outer cylinder rises with the fixing ring until the circular plate is covered from below, operate the first electric telescopic rod or the third electric telescopic rod, and on the premise that the circular plate is always in the outer cylinder, adjust the position of the high-pressure sprayer nozzle relative to the white mold, operate the third motor, the third gear rotates by the driving force of the third motor, the rotating drum rotates by the meshing of the third gear with the teeth on the rotating drum, and the rotating drum is mounted on an L-shaped placement rod. The high-pressure sprayer rotates with the rotating drum, and the rotation angle on the horizontal plane of the paint spraying is adjusted. After the position on the white mold that needs to be painted is within the spraying range of the nozzle, the high-pressure sprayer is operated to spray the paint in the paint box to the white mold. The spraying is always carried out between the circular plate and the outer cylinder. The key points are sprayed before dipping. The advance spraying can pre-fill some small holes, gaps or uneven places produced in the white mold during the production process, making the surface of the white mold smoother and flatter. The paint can be more evenly attached to it during subsequent dipping, which is beneficial to improve the dimensional accuracy and surface quality of the casting. In the spraying process, the circular plate and the outer cylinder form an independent space to isolate the operator from the paint particles and prevent the paint particles from diffusing in the air. While being environmentally friendly, it also improves the safety of the operator's working environment. The first electric telescopic rod, the third electric telescopic rod and the third motor are used to change the longitudinal and horizontal steering of the spraying point. The spraying position can be changed without manual adjustment, so that the spraying angle is variable, the spraying dead angle is reduced, and the quality of the casting is improved. When the white mold is in the paint box for dipping, the first motor is operated, the first motor drives the rotating rod to rotate, the first sprocket rotates with the rotating rod, the chain drives the first sprocket and the second sprocket to rotate, the rotating rod rotates with the sprocket thereon, the stirring paddle rotates with the rotating rod to stir the bottom coating, the second gear rotates with the rotating rod, the first gear rotates with the second gear, the rack moves left and right with the first gear in the limit frame, the connecting rod moves with the rack, and the long-haired paint brush moves left and right in the paint. The white mold is smeared, and the stirring blade stirs the bottom layer of the paint to avoid the paint from settling, preventing precipitation, stratification or agglomeration, making the paint more uniform, the paint characteristics more stable, the coating more uniform, and improving the dipping effect. The paint for spraying and the dipping paint are both taken from the paint box, reducing the difference in paint batches on the white mold and improving the production quality of the lost foam. At the same time, the driving force of the first motor is utilized, through the transmission of the sprocket, chain and gear, and the long-haired paint brush is used to stir the upper layer of paint, so that the paint can flow and cover better during dipping, reducing the generation of bubbles and coating defects, improving the dipping quality, making the production quality of the lost foam white mold higher, and realizing the continued coating after drying, without the need for manual operation and transfer, reducing manual labor and improving production efficiency.

[0008] A button is fixed in the installation box, and square holes are opened on the left and right sides of the installation box. Slope movable blocks are inserted into the two square holes, and a third fixed plate is fixed on the top of the slope movable block. A second spring is fixed between the third fixed plate and the inner wall of the installation box. A resistance block is integrally formed on the top of the paint box, the slope movable block contacts the resistance block, the slope movable block contacts the button, and the button is electrically connected to the first motor.

[0009] With the above structure, when the connecting rod moves left and right, the installation box moves with the connecting rod, and the slope movable block moves left and right with the installation box, and the second spring maintains the position of the slope movable block. When the slope movable block contacts the resistance block on the paint box, the resistance block squeezes the slope movable block to move toward the button direction, and the third fixed plate moves with the slope movable block. The third fixed plate stretches the second spring, and the slope surface of the slope movable block contacts the button and presses the button. The first motor starts to reverse to realize the reverse movement of the long-haired paint brush, thereby realizing the left and right reciprocating motion of the long-haired paint brush in the paint box. This process does not require manual operation of the forward and reverse rotation of the first motor, thereby improving production efficiency. At the same time, when the first motor reverses, the stirring blade reverses to change the stirring direction of the paint. The change in force direction increases the degree of change of the paint particles, making the stirring more uniform.

[0010] The first clamping part includes a square groove opened below the circular plate, a first double-headed motor is fixed in the square groove, a first lead screw is fixed to the output end of the first double-headed motor, a first slider is threadedly connected to the first lead screw, a first square tube is fixed to the bottom of the first slider, a first movable rod is passed through the first square tube, first fixed plates are fixed to the opposite ends of the tops of the two first movable rods, a first spring is fixed between the first fixed plate and the first slider, and silicone rubber layers are adhered to the facing ends of the two first movable rods.

[0011] With the above structure, the first double-headed motor drives the first lead screw to rotate, and the first slider is limited in the square groove. The first slider cannot rotate with the first lead screw to generate threaded transmission. The first slider can move linearly left and right in the square groove, and the first square tube moves with the first slider. The white mold is placed between the two first square tubes. The first movable rod contacts the white mold with the first square tube to achieve clamping of the white mold. During the clamping process, the restoring force of the first spring causes the first movable rod to clamp the white mold. If the clamping force is too large, the first movable rod is pushed outward, and the first fixed plate moves with the first movable rod. The first fixed plate stretches the first spring to prevent the first movable rod from excessively clamping the white mold. The provision of the silicone rubber layer increases the friction between the first movable rod and the white mold, and further protects the white mold to prevent damage to the white mold during the clamping process.

[0012] A dipping mechanism is arranged below the first clamping part located in the middle position, and the dipping mechanism includes a second double-headed motor fixed at the bottom of the paint box, a rotating shaft is fixed at the output end of the second double-headed motor, a first bevel gear is fixed at the end of the rotating shaft away from the second double-headed motor, slide rails are fixed on the left and right sides of the paint box, a second lead screw is rotatably connected in the slide rail, a first magnetic block is threadedly connected to the second lead screw, limiting grooves are arranged on the left and right sides of the inner wall of the paint box, a second magnetic block slides in the limiting groove, the second magnetic block is magnetically connected to the first magnetic block, a metal mesh is fixed between the two second magnetic blocks, a second bevel gear is fixed at the bottom of the second lead screw, and the second bevel gear is meshed with the first bevel gear.

[0013] With the above structure, the second magnetic block and the limiting groove of the paint box are in a concave-convex limiting relationship. The first magnetic block and the second magnetic block are strong magnets. The paint box is filled with paint for the white mold. After spraying, the white mold is moved to the top of the paint box by the linear motor, and the first electric telescopic rod drives the white mold on the first clamping part to move down, and the second double-headed motor is operated at the same time. The second double-headed motor drives the rotating shaft to rotate, the first bevel gear rotates with the rotating shaft, the second bevel gear rotates with the first bevel gear, and the second lead screw rotates with the second bevel gear. The first magnetic block is located in the slide rail and does not rotate with the second lead screw. The first magnetic block and the second lead screw generate a threaded transmission and move upward linearly. The second magnetic block moves up with the first magnetic block, and the metal mesh moves up with the second magnetic block to a position close to the entrance of the paint box. The first clamping part releases the white mold and puts the white mold on the metal mesh. The second double-headed motor rotates in the opposite direction to move the metal mesh down, so that the white mold is immersed in the paint. At this time, the first clamping part merges to merge the two first movable rods with the first square tube to form a complete rectangular plane below. The rod moves downward to make the rectangular plane contact the top of the white mold, and the white mold is pressed into the paint to realize the dipping of the paint on the white mold. After the dipping is completed, the metal net moves up to realize the discharge. There is no need for the first clamping part to be immersed in the paint to clamp the white mold, which reduces the contact between the first clamping part and the paint and prolongs its service life. The setting of the magnetic block ensures the integrity of the paint box, and avoids the transmission structure being set in the paint, which causes the structure to be easily wrapped and filled with sticky paint, resulting in obstruction of operation, and improves the stability of the up and down movement of the metal net. The metal net is located at the bottom to catch the white mold, making the transfer of the white mold more stable, and the paint particles can be moved during the up and down movement of the metal net, making the paint more uniform. At the same time, the metal net is located between the white mold and the stirring blade to block it, so as to avoid the stirring blade contacting the white mold to damage the white mold, and improve the integrity of the white mold during the dipping process. The complete rectangular plane formed by the first clamping part is used to press down from the top of the white mold instead of manually holding the white mold to press down, and avoids manual contact with the paint to ensure manual health. The white mold can also be immersed in the paint in a wider range to improve the integrity of the coating.

[0014] A material conveying mechanism is arranged behind the first clamping part, and the material conveying mechanism includes a heat preservation cylinder, a first conveyor belt rotates inside the heat preservation cylinder, a second electric telescopic rod is fixed at a position in front of the first conveyor belt in the heat preservation cylinder, a placement rack is fixed on the top of the second electric telescopic rod, a placement frame is placed on the top of the placement rack, a transfer mechanism is arranged on the top of the placement frame, a square opening is opened at the front position of the top of the heat preservation cylinder, and the inner diameter of the square opening is the same as the outer diameter of the placement frame.

[0015] With the above structure, the white mold after dipping and coating continues to be clamped by the first clamping part after being discharged, the first electric telescopic rod drives the first clamping part to move upward, the linear motor drives the white mold to move above the outer cylinder, and the hot air in the drying room is used to preliminarily dry the white mold on the inner surface of the outer cylinder, and then it is moved to the top of the conveying mechanism by the transfer mechanism, the blank placement frame is placed on the placement rack, and the second electric telescopic rod is operated to move the placement rack upward, and the placement frame moves up with the placement rack to the square mouth of the insulation cylinder to receive the white mold on the second clamping part, and then the second electric telescopic rod is retracted, so that the placement rack moves with the movable end of the second electric telescopic rod to a position below the surface of the first conveyor belt, and both sides of the placement rack are located on the first conveyor belt. In the air on the left and right sides of the conveyor belt, most of the bottom surface of the placement frame contacts the surface of the belt body of the first conveyor belt. The first conveyor belt is operated to transfer the placement frame with the white mold to the drying room for drying. The above structure allows the white mold with the preliminary surface drying to be placed in the placement frame from transfer to drying, so that the white mold is always in a transfer contact state on the drying production line, reducing the collision of the white mold on the production line and maintaining the integrity of the white mold. The insulation cylinder is connected in front of the drying room so that the white mold can be heated and dried during the transmission process, and provides a flow direction for the hot air in the drying room. The placement frame blocks the square opening to reduce heat loss and provide a certain outlet for moisture removal, thereby improving the drying effect.

[0016] The transfer mechanism includes a mounting frame, a second motor is fixed on the rear end of the mounting frame, a third screw is fixed on the output end of the second motor, the third screw is threadedly connected to a sliding plate, a sliding rod is passed through the right side of the sliding plate, the sliding rod is fixed on the mounting frame, a limiting groove is provided at the front end of the sliding plate, a third double-headed motor is fixed in the limiting groove, a fourth screw is fixed on the output end of the third double-headed motor, a second slider is threadedly connected on the fourth screw, a second square tube is fixed at the front end of the second slider, a second movable rod is passed through the second square tube, a second fixed plate is fixed to the opposite ends of the two second movable rods, a third spring is fixed between the second fixed plate and the second slider, and silicone rubber layers are pasted on the facing ends of the two second movable rods.

[0017] By adopting the above structure, the white mold on the first clamping part is transferred to the front of the placement frame, the second motor is operated to drive the third lead screw to rotate, a sliding rod is penetrated at the other end of the sliding plate to prevent the sliding plate from rotating with the third lead screw, so that a threaded transmission is generated between the sliding plate and the third lead screw, the sliding plate is close to the white mold on the first clamping part through the threaded transmission, so that the white mold is located between the two second movable rods, the third double-headed motor is operated to drive the fourth lead screw to rotate, the second slider is in the limiting groove of the sliding plate, the second slider is limited and does not rotate with the fourth lead screw, the second slider and the fourth lead screw generate a threaded transmission, so that the second slider is close to the white mold, the second movable rod clamps the white mold with the second slider through the second square tube, if the clamping force is too large, the second movable rod moves inward and outward of the second square tube, the second fixed plate moves outward with the second movable rod to stretch the third spring, and the clamping of the white mold by the second movable rod is relaxed, and the white mold that needs secondary coating after drying continues to be transmitted to the first clamping part through the first transmission belt and the transfer mechanism to avoid damage to the white mold, and at the same time the silicone rubber layer increases the clamping force between the second movable rod and the white mold, further protecting the integrity of the white mold.

[0018] The rear end of the heat preservation cylinder is connected to a drying room, an electric heating plate is fixed on the inner wall of the drying room, a plurality of supply and exhaust fans are fixed on the top of the inner wall of the drying room, a second conveyor belt rotates in the drying room, the second conveyor belt is vertically distributed with the first conveyor belt, a vertical plate is arranged at the rear of the second conveyor belt, the vertical plate is fixed in the drying room, three fourth electric telescopic rods are passed through the vertical plate, the fixed end of the fourth electric telescopic rod is fixed to the vertical plate by bolts, a push plate is fixed on the front end of the fourth electric telescopic rod, the three fourth electric telescopic rods correspond to the positions of the first conveyor belt respectively, and the push plate is in contact with the placement frame.

[0019] With the above structure, the placement frame with the white mold is moved to the second conveyor belt through the first conveyor belt, and the electric heating plate cooperates with the supply and exhaust fan (this is the prior art) to form hot air to output hot air to the second conveyor, so that the white mold is always in the flowing hot air for drying. After drying, the second conveyor belt can transfer the placement frame with the white mold to the position of the paint spraying mechanism or the dipping mechanism according to demand, the fourth electric telescopic rod is extended, and the push plate pushes the placement frame to the first conveyor belt with the fourth electric telescopic rod for unloading or continuing to apply paint, without manual entry into the drying room, and the white mold transfer process forms a complete hot air transfer channel, so that the white mold gradually enters the high temperature or gradually leaves the high temperature state. The transfer process is also an adaptation process, and two effects are achieved at the same time, thereby improving production efficiency, extending the adaptation time of the white mold to the temperature, making the dried coating surface smoother, and improving the quality of the white mold.

[0020] The front end of the insulation cylinder is connected to an air duct, the end of the air duct away from the insulation cylinder is fixed at the rear of the outer cylinder, the end of the air duct close to the outer cylinder is rotatably connected to a spring flap, the bottom of the outer cylinder is connected to a ground cylinder through a bellows, a through hole is opened on the right side of the ground cylinder, and placement holes are opened in the center of the top of the ground cylinder and near the through hole, a pull-out plate is placed in the placement hole, and a filter is installed on the pull-out plate.

[0021] With the above structure, when the dip-coated white mold is located in the outer cylinder, the third electric telescopic rod is operated to make the outer cylinder and the circular plate form an independent space, and the valve on the air duct is opened. When the hot air is output from the air duct, the spring flap is blown open, so that the air in the drying room enters the space formed by the outer cylinder and the circular plate through the air duct, and the white mold is preliminarily dried. After the surface of the white mold is dried, the paint layer can be prevented from being damaged in the subsequent clamping transfer process. At the same time, the dripping paint contacts the fluoropolymer coating and is in a flowable state. The hot air in the drying room enters the ground cylinder from the bellows, and the dripping paint is blown onto the filter for recycling. The pull-out plate can be directly pulled up to be replaced, so as to avoid the dripping and accumulation of paint. The hot air in the drying room can also provide temperature adaptation, preliminary surface drying to ensure the integrity of the white mold transfer process, and blowing to recover the dripping paint, etc., so as to improve energy utilization and be environmentally friendly. When the valve of the spring flap on the air duct is closed, one end of the air duct on the outer cylinder is blocked to prevent the paint from entering during the painting process.

[0022] Compared with the existing technology, this lost foam white film drying production line has the following advantages: 1. Spray the key points before dipping. Spraying in advance can pre-fill some small holes, gaps or uneven places produced in the white mold during the production process, making the surface of the white mold smoother and flatter. The paint can be more evenly attached to it during subsequent dipping, which is beneficial to improve the dimensional accuracy and surface quality of the casting. In the spraying process, the round plate and the outer cylinder form an independent space to isolate the operator from the paint particles and prevent the paint particles from spreading in the air. It is environmentally friendly and improves the safety of the operator's working environment. The first electric telescopic rod, the third electric telescopic rod and the third motor are used to change the longitudinal and horizontal steering of the spraying point. The spraying position can be changed without manual adjustment, making the spraying angle variable, reducing the spraying dead angle, and improving the casting. The stirring blade stirs the bottom layer of the paint to avoid the paint from settling, preventing precipitation, stratification or agglomeration, making the paint more uniform, the paint characteristics more stable, the coating more uniform, and improving the dipping effect. The paint for spraying and the dipping paint are both taken from the paint box, reducing the difference in paint batch numbers on the white mold and improving the production quality of the lost foam. At the same time, the driving force of the first motor is utilized, through the transmission of the sprocket, chain and gear, and the long-haired paint brush is used to move the upper layer of paint, so that the paint can flow and cover better during dipping, reducing the generation of bubbles and coating defects, improving the dipping quality, making the production quality of the lost foam white mold higher, and realizing the continued coating after drying, without the need for manual operation and transfer, reducing manual labor and improving production efficiency.

[0023] 2. After the dipping is completed, the metal mesh moves up to realize the discharge. There is no need for the first clamping part to be immersed in the paint to clamp the white mold, which reduces the contact between the first clamping part and the paint and prolongs its service life. The setting of the magnetic block ensures the integrity of the paint box and avoids the transmission structure being set in the paint, which causes the structure to be easily wrapped and filled with sticky paint, resulting in obstruction of operation, and improves the stability of the up and down movement of the metal mesh. The metal mesh is located at the bottom to catch the white mold, making the transfer of the white mold more stable, and the paint particles can be moved during the up and down movement of the metal mesh, making the paint more uniform. At the same time, the metal mesh is located between the white mold and the stirring blade to block it, avoiding the stirring blade from contacting the white mold to damage the white mold, improving the integrity of the white mold during the dipping process, and using the complete rectangular plane formed by the first clamping part to press down from the top of the white mold instead of manually holding the white mold to press down, and avoiding manual contact with the paint to ensure manual health, and also allowing the white mold to be immersed in the paint in a wider range, improving the integrity of the coating.

[0024] 3. The second electric telescopic rod retracts, so that the placement frame moves with the movable end of the second electric telescopic rod to a position below the surface of the first conveyor belt. Both sides of the placement frame are located in the air on the left and right sides of the first conveyor belt, so that most of the bottom surface of the placement frame contacts the surface of the belt body of the first conveyor belt. The first conveyor belt is operated to transfer the placement frame containing the white mold to the drying room for drying. The above structure allows the white mold with preliminary surface drying to be placed in the placement frame from transfer to drying, so that the white mold is always in a transfer contact state on the drying production line, reducing the collision of the white mold on the production line and maintaining the integrity of the white mold. The insulation cylinder is connected in front of the drying room so that the white mold can be heated and dried during the transmission process, and provides a flow direction for the hot air in the drying room. The placement frame blocks the square opening to reduce heat loss and provide a certain outlet for moisture removal, thereby improving the drying effect.

[0025] 4. After drying, the second conveyor belt can transfer the placement frame with the white mold to the position of the paint spraying mechanism or the dipping mechanism according to the demand. The fourth electric telescopic rod is extended, and the push plate pushes the placement frame to the first conveyor belt with the fourth electric telescopic rod to discharge or continue to apply paint. There is no need for manual entry into the drying room, and the white mold transfer process forms a complete hot air transfer channel, so that the white mold gradually enters the high temperature or gradually leaves the high temperature state. The transfer process is also an adaptation process. Two effects are achieved at the same time, which improves production efficiency, prolongs the adaptation time of the white mold to the temperature, makes the dry coating surface smoother, and improves the quality of the white mold.

[0026] 5. The air in the drying room is allowed to enter the space formed by the outer cylinder and the circular plate through the air duct to perform preliminary drying of the white mold. After the surface of the white mold is dried, the paint layer can be prevented from being damaged during the subsequent clamping and transfer process. At the same time, the dripping paint contacts the fluoropolymer coating and is in an easily flowable state. The hot air in the drying room enters the ground cylinder from the bellows to blow the dripping paint onto the filter for recovery. The pull-out plate can be directly pulled up and replaced to avoid the dripping and accumulation of paint. The hot air in the drying room also provides temperature adaptation, preliminary surface drying to ensure the integrity of the white mold transfer process, and blowing to recover the dripping paint, etc., to improve energy utilization and be environmentally friendly. When the valve on the air duct with a spring flap is closed, one end of the air duct on the outer cylinder is blocked to prevent the entry of paint during the painting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the paint spraying mechanism part in the present invention.

[0029] Figure 3 It is a structural schematic diagram of the coating box part in the present invention.

[0030] Figure 4 It is a schematic structural diagram of the chain part in the present invention.

[0031] Figure 5 It is a schematic structural diagram of the first magnetic block part in the present invention.

[0032] Figure 6 It is a structural schematic diagram of the button part in the present invention.

[0033] Figure 7 It is a schematic structural diagram of the first clamping portion in the present invention.

[0034] Figure 8 It is a structural schematic diagram of the inner cylinder part in the present invention.

[0035] Fig. 9 It is a structural schematic diagram of the sliding plate part in the present invention.

[0036] Fig.10 yes Fig. 9 A magnified view of the structure at center.

[0037] Fig.11 It is a structural schematic diagram of the placement rack part in the present invention.

[0038] Fig.12 It is a structural schematic diagram of the heat preservation cylinder part of the present invention.

[0039] Fig.13 yes Fig.12 A magnified view of the structure at point B.

[0040] Fig.14 It is a structural schematic diagram of the drying room part in the present invention.

[0041] Fig.15 It is a structural schematic diagram of the push plate part in the present invention.

[0042] In the figure, 1, bracket; 2, linear motor; 3, slide; 4, first electric telescopic rod; 5, round plate; 6, first double-headed motor; 7, first lead screw; 8, first slider; 9, first square tube; 10, first movable rod; 11, first fixed plate; 12, first spring; 13, fixed leg; 14, paint box; 15, slide rail; 16, second double-headed motor; 17, second lead screw; 18, first magnetic block; 19, second magnetic block; 20, metal mesh; 21, Rotating shaft; 22, first bevel gear; 23, second bevel gear; 24, mounting angle piece; 25, first motor; 26, first sprocket; 27, stirring blade; 28, chain; 29, second sprocket; 30, first gear; 31, rack; 32, limit frame; 33, connecting rod; 34, mounting box; 35, ramp movable block; 36, button; 37, long-haired paint brush; 38, second spring; 39, second motor; 40, third lead screw; 41, Sliding plate; 42, third double-headed motor; 43, fourth lead screw; 44, second slider; 45, second square tube; 46, second movable rod; 47, second fixed plate; 48, third spring; 49, sliding rod; 50, heat preservation tube; 51, first conveyor belt; 52, second electric telescopic rod; 53, placement rack; 54, placement frame; 55, drying room; 56, electric heating plate; 57, supply and exhaust fan; 58, second conveyor belt; 59, bellows; 60, ground tube ; 61. pull-out plate; 62. filter; 63. third electric telescopic rod; 64. fixing ring; 65. second gear; 66. resistance block; 67. mounting frame; 68. air duct; 69. spring flap; 70. placement rod; 71. rotating drum; 72. outer drum; 73. third motor; 74. third gear; 75. teeth; 76. base; 77. high-pressure sprayer; 78. third fixed plate; 79. fourth electric telescopic rod; 80. push plate; 81. vertical plate. DETAILED DESCRIPTION

[0043] 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.

[0044] like Figure 1-Figure 15As shown, the lost foam white film drying production line comprises a bracket 1, a linear motor 2 is fixed on the bracket 1, three slides 3 are fixed at the output end of the linear motor 2, the front end of each slide 3 is fixed with a first electric telescopic rod 4 by bolts, a circular plate 5 is fixed below the first electric telescopic rod 4 by bolts, a first clamping portion is arranged at the bottom of the circular plate 5, and a painting mechanism is arranged below the left and right first clamping portions, the painting mechanism comprises a base 76, a high-pressure sprayer 77 is fixed above the base 76, a rotating drum 71 is fixed at the output end of the high-pressure sprayer 77, an outer cylinder 72 is rotatably connected to the outer cylinder 71 through a placement rod 70, a through hole is provided at the front end of the outer cylinder 72, and teeth 75 are provided at the position of the rotating drum 71 corresponding to the through hole, a third motor 73 is fixed at the front end of the outer cylinder 72, a third gear 74 is fixed at the output end of the third motor 73, the third gear 74 is meshed with the teeth 75, the inner diameter of the outer cylinder 72 is the same as the outer diameter of the circular plate 5, a fixing ring 64 is fixed outside the outer cylinder 72, and a third electric telescopic rod 63 is fixed at the bottom of the fixing ring 64;In this embodiment, the linear motor 2, the first electric telescopic rod 4, the high-pressure sprayer 77, the third motor 73, and the third electric telescopic rod 63 are all prior art. The worker faces the position on the white mold that needs to be painted forward and fixes the white mold on the first clamping part above the paint spraying mechanism, or clamps the white mold from the second clamping part through the first clamping part after drying to spray a second layer of paint, and runs the third electric telescopic rod 63. The fixing ring 64 rises with the extension of the third electric telescopic rod 63, and the outer cylinder 72 As the fixing ring 64 rises until the circular plate 5 is covered from below, the first electric telescopic rod 4 or the third electric telescopic rod 63 is operated, and the position of the nozzle of the high-pressure spraying machine 77 relative to the white mold is adjusted under the premise that the circular plate 5 is always in the outer cylinder 72, and the third motor 73 is operated. The third gear 74 rotates through the driving force of the third motor 73, and the rotating drum 71 rotates through the meshing of the third gear 74 and the teeth 75 on the rotating drum 71. The rotating drum 71 is mounted on the L-shaped placement rod 70, and rotates in the outer cylinder 72 under the limit of the placement rod 70. The nozzle of the high-pressure sprayer 77 rotates with the rotating drum 71, and the rotation angle on the horizontal plane of the paint spraying is adjusted. After the position on the white mold that needs to be painted is within the spraying range of the nozzle, the high-pressure sprayer 77 is operated to spray the paint in the paint box 14 to the white mold. The spraying is always carried out between the circular plate 5 and the outer cylinder 72. The key points are sprayed before dipping. The advance spraying can pre-fill some small holes, gaps or uneven places generated in the white mold during the production process, so that the surface of the white mold is smoother and flatter. The paint can be more evenly attached to it during subsequent dipping, which is beneficial to improve the dimensional accuracy and surface quality of the casting. In the spraying process, the circular plate 5 and the outer cylinder 72 form an independent space to isolate the operator from the paint particles and prevent the paint particles from diffusing in the air. It is environmentally friendly and improves the working environment safety of the operator. The first electric telescopic rod 4, the third electric telescopic rod 63 and the third motor 73 are used to realize the change of the longitudinal and horizontal steering of the spraying point. The change of the spraying position can be realized without manual adjustment, so that the spraying angle is variable, the spraying dead angle is reduced, and the quality of the casting is improved. ;

[0045] A paint box 14 is arranged below the first clamping part in the middle, a fixed leg 13 is fixed at the bottom of the paint box 14, two mounting angle pieces 24 are fixed at the bottom of the paint box 14, a first motor 25 is fixed on the two mounting angle pieces 24, six rotating rods are passed through the bottom of the paint box 14, and the six rotating rods are arranged in groups of three and symmetrically distributed front and back. The two first motors 25 are connected to one rotating rod in each group through a coupling, and a stirring blade 27 is fixed on the rotating rod, and the stirring blade 27 is located below the metal mesh 20. The rotating rods located on the left and right sides are key-connected with the first sprocket 26 The key on the rotating rod located in the middle position is connected to the second sprocket 29 and the second gear 65, the first sprocket 26 and the second sprocket 29 are meshed with a chain 28, the bottom of the paint box 14 is rotatably connected to the first gear 30, the front and rear sides of the paint box 14 are fixed with a limit frame 32, a rack 31 slides in the limit frame 32, the rack 31 is meshed with the first gear 30, a connecting rod 33 is vertically fixed to the top of the rack 31, a mounting box 34 is fixed to the top of the connecting rod 33, a long-haired paint brush 37 is fixed to the bottom of the mounting box 34, and the long-haired paint brush 37 is located on the inner wall of the paint box 14.

[0046] In this embodiment, the first motor 25 is a prior art. When the white mold is located in the paint box 14 for dipping, the first motor 25 is operated, the first motor 25 drives the rotating rod to rotate, the first sprocket 26 rotates with the rotating rod, the chain 28 drives the first sprocket 26 and the second sprocket 29 to rotate, the rotating rod rotates with the sprocket thereon, the stirring paddle 27 rotates with the rotating rod to stir the bottom coating, the second gear 65 rotates with the rotating rod, the first gear 30 rotates with the second gear 65, the rack 31 moves left and right with the first gear 30 in the limit frame 32, the connecting rod 33 moves with the rack 31, the long-haired paint brush 37 moves left and right in the paint, the white mold is coated, and the stirring paddle 27 stirs the bottom layer of the paint to avoid coating. The material is allowed to settle to prevent precipitation, stratification or agglomeration, so that the coating is more uniform, the coating properties are more stable, the coating is more uniform, and the dipping effect is improved. The paint for spraying and the dipping paint are both taken from the paint box 14, which reduces the difference in paint batch numbers on the white mold and improves the production quality of the lost foam. At the same time, the driving force of the first motor 25 is utilized, and the long-haired paint brush 37 is used to move the upper layer of paint through the transmission of the sprocket, chain 28 and gear, so that the paint can flow and cover better during dipping, reduce the generation of bubbles and coating defects, improve the dipping quality, make the production quality of the lost foam white mold higher, and realize the continued coating after drying, and no manual operation transfer is required, thereby reducing the amount of manual labor and improving production efficiency.

[0047] A button 36 is fixed in the installation box 34, and square holes are opened on the left and right sides of the installation box 34. The two square holes are penetrated by slope movable blocks 35, and a third fixed plate 78 is fixed on the top of the slope movable block 35. A second spring 38 is fixed between the third fixed plate 78 and the inner wall of the installation box 34. A resistance block 66 is integrally formed on the top of the paint box 14, and the slope movable block 35 contacts the resistance block 66, and the slope movable block 35 contacts the button 36, and the button 36 is electrically connected to the first motor 25.

[0048] In this embodiment, the button 36 controls the forward and reverse rotation of the first motor 25, which is a prior art. When the connecting rod 33 moves left and right, the installation box 34 moves with the connecting rod 33, and the slope movable block 35 moves left and right with the installation box 34. The second spring 38 maintains the position of the slope movable block 35. When the slope movable block 35 contacts the resistance block 66 on the paint box 14, the resistance block 66 squeezes the slope movable block 35 to move in the direction of the button 36, and the third fixed plate 78 moves with the slope movable block 35. The third fixed plate 78 stretches the second spring 38. The slope surface of the slope movable block 35 contacts the button 36 and presses the button 36. The first motor 25 starts to reverse to realize the reverse movement of the long-haired paint brush 37, thereby realizing the left and right reciprocating motion of the long-haired paint brush 37 in the paint box 14. This process does not require manual operation of the forward and reverse rotation of the first motor 25, thereby improving production efficiency. At the same time, when the first motor 25 reverses, the stirring blade 27 reverses to change the stirring direction of the paint. The change in force direction increases the degree of change in the paint particles, making the stirring more uniform.

[0049] The first clamping part includes a square groove provided below the circular plate 5, in which a first double-headed motor 6 is fixed, a first lead screw 7 is fixed to the output end of the first double-headed motor 6, a first slider 8 is threadedly connected to the first lead screw 7, a first square tube 9 is fixed to the bottom of the first slider 8, a first movable rod 10 is passed through the first square tube 9, first fixed plates 11 are fixed to the opposite ends of the tops of the two first movable rods 10, a first spring 12 is fixed between the first fixed plate 11 and the first slider 8, and silicone rubber layers are pasted to the facing ends of the two first movable rods 10.

[0050] In this embodiment, the first double-headed motor 6 is the prior art. The first double-headed motor 6 drives the first lead screw 7 to rotate. The first slider 8 is limited in the square groove. The first slider 8 cannot rotate with the first lead screw 7 to generate threaded transmission. The first slider 8 can move linearly left and right in the square groove. The first square tube 9 moves with the first slider 8. The white mold is placed between the two first square tubes 9. The first movable rod 10 contacts the white mold with the first square tube 9 to achieve clamping of the white mold. During the clamping process, the restoring force of the first spring 12 causes the first movable rod 10 to clamp the white mold. If the clamping force is too large, the first movable rod 10 is pushed outward. The first fixed plate 11 moves with the first movable rod 10. The first fixed plate 11 stretches the first spring 12 to prevent the first movable rod 10 from excessively clamping the white mold. The provision of the silicone rubber layer increases the friction between the first movable rod 10 and the white mold, and further protects the white mold to prevent damage to the white mold during the clamping process.

[0051] A dipping mechanism is arranged below the first clamping part located in the middle position, and the dipping mechanism includes a second double-headed motor 16 fixed at the bottom of the paint box 14, a rotating shaft 21 is fixed at the output end of the second double-headed motor 16, a first bevel gear 22 is fixed at one end of the rotating shaft 21 away from the second double-headed motor 16, slide rails 15 are fixed on the left and right sides of the paint box 14, a second lead screw 17 is rotatably connected in the slide rail 15, a first magnetic block 18 is threadedly connected to the second lead screw 17, limiting grooves are provided on the left and right sides of the inner wall of the paint box 14, a second magnetic block 19 slides in the limiting groove, the second magnetic block 19 is magnetically connected to the first magnetic block 18, a metal mesh 20 is fixed between the two second magnetic blocks 19, a second bevel gear 23 is fixed at the bottom of the second lead screw 17, and the second bevel gear 23 is meshed with the first bevel gear 22.

[0052] In this embodiment, the second double-headed motor 16 is a prior art, the second magnetic block 19 and the limiting groove of the paint box 14 are in a concave-convex limiting relationship, the first magnetic block 18 and the second magnetic block 19 are strong magnets, and the paint box 14 is filled with paint for the white mold. After the spraying is completed, the white mold is moved to the top of the paint box 14 by the linear motor 2, and the first electric telescopic rod 4 drives the white mold on the first clamping part to move downward, and the second double-headed motor 16 is operated at the same time. The second double-headed motor 16 drives the rotating shaft 21 to rotate, and the first bevel gear 22 rotates with the rotating shaft 21, and the second bevel gear 23 rotates with the first bevel The bevel gear 22 rotates, the second lead screw 17 rotates with the second bevel gear 23, the first magnetic block 18 is located in the slide rail 15 and does not rotate with the second lead screw 17, the first magnetic block 18 and the second lead screw 17 generate a threaded transmission and move upward linearly, the second magnetic block 19 moves up with the first magnetic block 18, the metal mesh 20 moves up with the second magnetic block 19 to a position close to the entrance of the paint box 14, the first clamping part releases the white mold and puts the white mold on the metal mesh 20, the second double-headed motor 16 rotates in the opposite direction to move the metal mesh 20 downward, so that the white mold is immersed in the paint, and at this time the first clamping part merges to make the two first movable The rod 10 is combined with the first square tube 9 to form a complete rectangular plane at the bottom. The first electric telescopic rod 4 moves downward to make the rectangular plane contact the top of the white mold, and the white mold is pressed into the paint to achieve the coating of the paint on the white mold. After the coating is completed, the metal mesh 20 moves upward to realize the discharge. There is no need for the first clamping part to be immersed in the paint to clamp the white mold, which reduces the contact between the first clamping part and the paint and prolongs its service life. The setting of the magnetic block ensures the integrity of the paint box 14, and avoids the transmission structure being set in the paint, which makes the structure easy to be wrapped and filled with sticky paint, resulting in obstruction of operation, and improves the up and down movement of the metal mesh 20. Stability: the metal mesh 20 is located at the bottom to catch the white mold, so that the transfer of the white mold is more stable, and the paint particles can be moved during the up and down movement of the metal mesh 20, so that the paint is more uniform. At the same time, the metal mesh 20 is located between the white mold and the stirring blade 27 to block it, so as to prevent the stirring blade 27 from contacting the white mold and damaging the white mold, thereby improving the integrity of the white mold during the dipping process. The complete rectangular plane formed by the first clamping part is used to press down from the top of the white mold instead of manually holding the white mold, and avoiding manual contact with the paint to ensure manual health. The white mold can also be immersed in the paint in a wider range, thereby improving the integrity of the coating.

[0053] A material conveying mechanism is arranged at the rear of the first clamping part, and the material conveying mechanism includes a heat preservation tube 50, in which a first conveyor belt 51 rotates, a second electric telescopic rod 52 is fixed at a position in front of the first conveyor belt 51 in the heat preservation tube 50, a placement rack 53 is fixed on the top of the second electric telescopic rod 52, a placement frame 54 is placed on the top of the placement rack 53, a transfer mechanism is arranged on the top of the placement frame 54, and a square opening is opened at a front position on the top of the heat preservation tube 50, and the inner diameter of the square opening is the same as the outer diameter of the placement frame 54.

[0054] In the present embodiment, the heat preservation cylinder 50 is a square cylinder made of heat preservation composite material, and the first transmission belt 51 is a common transmission belt composed of a motor, a synchronous wheel, a synchronous belt, a conveyor belt, etc. The above structure and the second electric telescopic rod 52 are all prior art. After the white mold is discharged after dipping, it continues to be clamped by the first clamping part, and the first electric telescopic rod 4 drives the first clamping part to move upward, and the linear motor 2 drives the white mold to move above the outer cylinder 72. After the white mold is preliminarily dried on the inner surface of the outer cylinder 72 by the hot air in the drying room 55, it is moved to the top of the conveying mechanism by the transfer mechanism, and the blank placement frame 54 is placed on the placement rack 53. The second electric telescopic rod 52 is operated to move the placement rack 53 upward. The placement frame 54 moves up with the placement rack 53 to the square mouth of the heat preservation cylinder 50 to receive the white mold on the second clamping part, and then the second electric telescopic rod 52 retracts, so that the placement rack 53 moves with the second electric telescopic rod 52. The movable end of the retracting rod 52 moves to a position below the surface of the first conveyor belt 51, and the two sides of the placement frame 53 are located in the air on the left and right sides of the first conveyor belt 51, so that most of the bottom surface of the placement frame 54 contacts the surface of the belt body of the first conveyor belt 51. The first conveyor belt 51 is operated to convey the placement frame 54 containing the white mold to the drying room 55 for drying. The above structure allows the white mold with the surface preliminarily dried to be placed in the placement frame 54 from the transfer to the placement frame 54 to the drying, so that the white mold is always in a transfer contact state on the drying production line, reducing the collision of the white mold on the production line and maintaining the integrity of the white mold. The heat preservation cylinder 50 is connected in front of the drying room 55 so that the white mold can be heated and dried during the transmission process, and provides a flow direction for the hot air in the drying room 55. The placement frame 54 blocks the square opening to reduce heat loss and provide a certain outlet for moisture removal, thereby improving the drying effect.

[0055] The transfer mechanism includes a mounting frame 67, a second motor 39 is fixed to the rear end of the mounting frame 67, a third lead screw 40 is fixed to the output end of the second motor 39, a sliding plate 41 is threadedly connected to the third lead screw 40, a sliding rod 49 is passed through the right side of the sliding plate 41, the sliding rod 49 is fixed to the mounting frame 67, a limiting groove is provided at the front end of the sliding plate 41, a third double-headed motor 42 is fixed in the limiting groove, a fourth lead screw 43 is fixed to the output end of the third double-headed motor 42, a second slider 44 is threadedly connected to the fourth lead screw 43, a second square tube 45 is fixed to the front end of the second slider 44, a second movable rod 46 is passed through the second square tube 45, a second fixed plate 47 is fixed to the opposite ends of the two second movable rods 46, a third spring 48 is fixed between the second fixed plate 47 and the second slider 44, and silicone rubber layers are pasted on the facing ends of the two second movable rods 46.

[0056] In this embodiment, the second motor 39 and the third double-headed motor 42 are both existing technologies. Before the white mold on the first clamping part is transferred to the placement frame 54, the second motor 39 is operated to drive the third lead screw 40 to rotate. A sliding rod 49 is penetrated at the other end of the sliding plate 41 to prevent the sliding plate 41 from rotating with the third lead screw 40, so that a threaded transmission is generated between the sliding plate 41 and the third lead screw 40. The sliding plate 41 approaches the white mold on the first clamping part through the threaded transmission, so that the white mold is located between the two second movable rods 46. The third double-headed motor 42 is operated to drive the fourth lead screw 43 to rotate. The second slider 44 is in the limiting groove of the sliding plate 41, and the second slider 44 is restricted from rotating with the fourth lead screw 43. The second slider 44 and the fourth lead screw 43 generate threaded transmission, so that the second slider 44 is close to the white mold, and the second movable rod 46 clamps the white mold with the second slider 44 through the second square tube 45. If the clamping force is too large, the second movable rod 46 moves inward and outward in the second square tube 45, and the second fixed plate 47 moves outward with the second movable rod 46 to stretch the third spring 48, loosening the clamping of the second movable rod 46 on the white mold. After drying, the white mold that needs secondary coating continues to be transferred to the first clamping part through the first conveyor belt 51 and the transfer mechanism to avoid damage to the white mold. At the same time, the silicone rubber layer increases the clamping force between the second movable rod 46 and the white mold, further protecting the integrity of the white mold.

[0057] The rear end of the insulation cylinder 50 is connected to a drying room 55, an electric heating plate 56 is fixed to the inner wall of the drying room 55, and a plurality of supply and exhaust fans 57 are fixed to the top of the inner wall of the drying room 55. A second conveyor belt 58 rotates in the drying room 55, and the second conveyor belt 58 is vertically distributed with the first conveyor belt 51. A vertical plate 81 is arranged at the rear of the second conveyor belt 58, and the vertical plate 81 is fixed in the drying room 55. Three fourth electric telescopic rods 79 are passed through the vertical plate 81. The fixed end of the fourth electric telescopic rod 79 is fixed to the vertical plate 81 by bolts, and a push plate 80 is fixed to the front end of the fourth electric telescopic rod 79. The three fourth electric telescopic rods 79 correspond to the positions of the first conveyor belt 51 respectively, and the push plate 80 is in contact with the placement frame 54.

[0058] In this embodiment, the electric heating plate 56, the supply and exhaust fan 57, the fourth electric telescopic rod 79 and the second conveyor belt 58 are all prior art. The second conveyor belt 58 has the same structure as the first conveyor belt 51 and is closer to the first conveyor belt 51. The placement frame 54 with the white mold is moved to the second conveyor belt 58 through the first conveyor belt 51. The electric heating plate 56 cooperates with the supply and exhaust fan 57 (this is the prior art) to form hot air and output the hot air to the second conveyor belt 58, so that the white mold is always in the flowing hot air for drying. After drying, the second conveyor belt 58 can transfer the placement frame 54 with the white mold to the spraying machine according to demand. At the position of the paint mechanism or the dipping mechanism, the fourth electric telescopic rod 79 is extended, and the push plate 80 follows the fourth electric telescopic rod 79 to push the placement frame 54 to the first conveyor belt 51 for unloading or continuing to apply paint. There is no need for manual entry into the drying room 55, and the white mold transfer process forms a complete hot air transfer channel, so that the white mold gradually enters the high temperature or gradually leaves the high temperature state. The transfer process is also an adaptation process. Two effects are achieved at the same time, which improves production efficiency, prolongs the adaptation time of the white mold to the temperature, makes the dry coating surface smoother, and improves the quality of the white mold.

[0059] The front end of the insulation cylinder 50 is connected to an air duct 68, and the end of the air duct 68 away from the insulation cylinder 50 is fixed at the rear of the outer cylinder 72. The end of the air duct 68 close to the outer cylinder 72 is rotatably connected to a spring flap 69. The bottom of the outer cylinder 72 is connected to the ground cylinder 60 through a bellows 59. A through hole is opened on the right side of the ground cylinder 60, and placement holes are opened in the center and near the through hole of the top of the ground cylinder 60. A pull-out plate 61 is placed in the placement hole, and a filter screen 62 is installed on the pull-out plate 61.

[0060] In this embodiment, the spring flap 69 is a prior art, the surfaces of the bellows 59 and the ground cylinder 60 are coated with a fluorine-containing polymer coating, and a valve is provided on the air duct 68 to control the air cut-off. When the dip-coated white mold is located in the outer cylinder 72, the third electric telescopic rod 63 is operated to make the outer cylinder 72 and the circular plate 5 form an independent space, and the valve on the air duct 68 is opened. When the hot air is output from the air duct 68, the spring flap 69 will be blown open, so that the air in the drying room 55 enters the space formed by the outer cylinder 72 and the circular plate 5 through the air duct 68, and the white mold is preliminarily dried. After the surface of the white mold is dried, the paint layer can be prevented from being damaged in the subsequent clamping and transfer process, and the dripping paint can be The material contacts the fluorine-containing polymer coating and is in a state of easy flow. The hot air from the drying room 55 enters the ground cylinder 60 from the bellows 59, and blows the dripping paint onto the filter screen 62 for recovery. The pull-out plate 61 can be directly pulled out for replacement to avoid the dripping and accumulation of paint. The hot air from the drying room 55 also provides temperature adaptation, preliminary surface drying to ensure the integrity of the white mold transfer process, and blowing to recover the dripping paint, etc., which improves energy utilization and is environmentally friendly. When the valve on the air duct 68 is closed, the spring flap 69 blocks one end of the air duct 68 on the outer cylinder 72 to prevent the entry of paint during the painting process.

[0061] The working principle of the present invention is as follows: the staff will face the position on the white mold that needs to be painted forward, and fix the white mold on the first clamping part above the paint spraying mechanism, or clamp the white mold from the second clamping part through the first clamping part after drying. The first double-headed motor 6 drives the first lead screw 7 to rotate, and the first slider 8 is limited in the square groove. The first slider 8 cannot rotate with the first lead screw 7 to generate thread transmission. The first slider 8 can move linearly left and right in the square groove. The first square tube 9 moves with the first slider 8. The white mold is placed between the two first square tubes 9. The first movable rod 10 contacts the white mold with the first square tube 9 to achieve clamping of the white mold. During the clamping process, the restoring force of the first spring 12 causes the first movable rod 10 to clamp the white mold. If the clamp If the holding force is too large, the first movable rod 10 is pushed outward, and the first fixed plate 11 moves with the first movable rod 10. The first fixed plate 11 stretches the first spring 12 to prevent the first movable rod 10 from excessively clamping the white mold. The third electric telescopic rod 63 is operated, and the fixed ring 64 rises with the extension of the third electric telescopic rod 63. The outer cylinder 72 rises with the fixed ring 64 until the circular plate 5 is covered from below. The first electric telescopic rod 4 or the third electric telescopic rod 63 is operated on the premise that the circular plate 5 is always in the outer cylinder 72. The position of the nozzle of the high-pressure sprayer 77 relative to the white mold is adjusted, and the third motor 73 is operated. The third gear 74 is rotated by the driving force of the third motor 73, and the rotating drum 71 is rotated by the meshing of the third gear 74 with the teeth 75 on the rotating drum 71. The rotating drum 71 frame It is arranged on the L-shaped placement rod 70, and rotates in the outer cylinder 72 under the limit of the placement rod 70. The nozzle of the high-pressure sprayer 77 rotates with the rotating cylinder 71, and the rotation angle on the horizontal plane of the paint spraying is adjusted. After the position on the white mold that needs to be painted is within the spraying range of the nozzle, the high-pressure sprayer 77 is operated to spray the paint in the paint box 14 to the white mold. The spraying is always carried out between the circular plate 5 and the outer cylinder 72. The key points are sprayed before dipping. After the spraying is completed, the white mold is moved to the top of the paint box 14 by the linear motor 2, and the first electric telescopic rod 4 drives the white mold on the first clamping part to move downward, and the second double-headed motor 16 is operated at the same time. The second double-headed motor 16 drives the rotating shaft 21 to rotate, and the first bevel gear 22 rotates with the rotating shaft 21, and the second bevel gear 23 rotates with the first bevel gear 2 2 rotates, the second lead screw 17 rotates with the second bevel gear 23, the first magnetic block 18 is located in the slide rail 15 and does not rotate with the second lead screw 17, the first magnetic block 18 and the second lead screw 17 generate a threaded transmission and move upward linearly, the second magnetic block 19 moves up with the first magnetic block 18, the metal mesh 20 moves up with the second magnetic block 19 to a position close to the entrance of the paint box 14, the first clamping part releases the white mold and puts the white mold on the metal mesh 20, the second double-headed motor 16 rotates in the opposite direction to move the metal mesh 20 downward, so that the white mold is immersed in the paint, at this time, the first clamping part merges to merge the two first movable rods 10 with the first square tube 9, and a complete rectangular plane is formed below, the first electric telescopic rod 4 moves downward to make the rectangular plane contact the top of the white mold, press the white mold into the paint, and realize the immersion of the paint on the white mold,After the dipping is completed, the metal mesh 20 moves up to realize the discharge. When the white mold is in the paint box 14 for dipping, the first motor 25 is operated, the first motor 25 drives the rotating rod to rotate, the first sprocket 26 rotates with the rotating rod, the chain 28 drives the first sprocket 26 and the second sprocket 29 to rotate, the rotating rod rotates with the sprocket thereon, the stirring paddle 27 rotates with the rotating rod to stir the bottom coating, the second gear 65 rotates with the rotating rod, the first gear 30 rotates with the second gear 65, the rack 31 moves left and right with the first gear 30 in the limit frame 32, the connecting rod 33 moves with the rack 31, the long-haired paint brush 37 moves left and right in the paint, the white mold is applied, the stirring paddle 27 stirs the bottom layer of the paint, and when the connecting rod 33 moves left and right, the installation box 34 moves with the connecting rod 3 3 moves, the slope movable block 35 moves left and right with the installation box 34, the second spring 38 maintains the position of the slope movable block 35, when the slope movable block 35 contacts the resistance block 66 on the paint box 14, the resistance block 66 squeezes the slope movable block 35 to move in the direction of the button 36, the third fixed plate 78 moves with the slope movable block 35, the third fixed plate 78 stretches the second spring 38, the slope surface of the slope movable block 35 contacts the button 36 and presses the button 36, the first motor 25 starts to reverse to realize the reverse movement of the long-haired paint brush 37, thereby realizing the left and right reciprocating motion of the long-haired paint brush 37 in the paint box 14, the white mold after dipping continues to be clamped by the first clamping part after discharging, the first electric telescopic rod 4 drives the first clamping part to move upward, and the linear motor 2 drives When the white mold moves to the top of the outer cylinder 72 and the dipped white mold is located in the outer cylinder 72, the third electric telescopic rod 63 is operated to make the outer cylinder 72 and the circular plate 5 form an independent space, and the valve on the air duct 68 is opened. When the hot air is output from the air duct 68, the spring flap 69 will be blown open, so that the air in the drying room 55 enters the space formed by the outer cylinder 72 and the circular plate 5 through the air duct 68 to perform preliminary drying on the white mold. After the surface of the white mold is dried, the coating layer can be prevented from being damaged in the subsequent clamping and transfer process. At the same time, the dripping coating contacts the fluoropolymer coating in a flowable and easy state. The hot air in the drying room 55 enters the ground cylinder 60 from the bellows 59, and the dripping coating is blown onto the filter screen 62 for recycling. The pull-out plate 61 can be directly pulled out for replacement. After the hot air in the drying room 55 preliminarily dries the white mold on the inner surface of the outer cylinder 72, it is moved to the top of the material conveying mechanism by the transfer mechanism, and the second motor 39 is operated to drive the third lead screw 40 to rotate. A slide rod 49 is penetrated at the other end of the sliding plate 41 to prevent the sliding plate 41 from rotating with the third lead screw 40, so that a threaded transmission is generated between the sliding plate 41 and the third lead screw 40. The sliding plate 41 is close to the white mold on the first clamping part through the threaded transmission, so that the white mold is located between the two second movable rods 46. The third double-headed motor 42 is operated to drive the fourth lead screw 43 to rotate. The second slider 44 is in the limiting groove of the sliding plate 41. The second slider 44 is limited and does not rotate with the fourth lead screw 43. The second slider 44 and the fourth lead screw 43 generate a threaded transmission, so that the second slider 44 is close to the white mold.The second movable rod 46 clamps the white mold with the second slider 44 through the second square tube 45. If the clamping force is too large, the second movable rod 46 moves inward and outward of the second square tube 45, and the second fixed plate 47 moves outward with the second movable rod 46 to stretch the third spring 48, loosening the clamping of the second movable rod 46 on the white mold. After drying, the white mold that needs a second coating continues to be transferred to the first clamping part through the first conveyor belt 51 and the transfer mechanism. The blank placement frame 54 is placed on the placement rack 53, and the second electric telescopic rod 52 is operated to move the placement rack 53 up. The placement frame 54 moves up with the placement rack 53 to the square mouth of the insulation tube 50 to receive the white mold on the second clamping part. Then the second electric telescopic rod 52 retracts, so that the placement rack 53 moves to a position below the surface of the first conveyor belt 51 with the movable end of the second electric telescopic rod 52. The positions on both sides of the placement rack 53 are In the air on the left and right sides of the first conveyor belt 51, most of the bottom surface of the placement frame 54 contacts the surface of the belt body of the first conveyor belt 51. The first conveyor belt 51 is operated to transfer the placement frame 54 with the white mold to the drying room 55 for drying. The placement frame 54 with the white mold moves to the second conveyor belt 58 through the first conveyor belt 51. The electric heating plate 56 cooperates with the supply and exhaust fan 57 (this is the existing technology) to form hot air and output hot air to the second conveyor belt 58, so that the white mold is always in the flowing hot air for drying. After drying, the second conveyor belt 58 can transfer the placement frame 54 with the white mold to the position of the painting mechanism or the dipping mechanism according to demand. The fourth electric telescopic rod 79 is extended, and the push plate 80 pushes the placement frame 54 to the first conveyor belt 51 with the fourth electric telescopic rod 79 to discharge or continue to apply paint.

[0062] In summary, through the clamping part, the transfer mechanism, the paint spraying mechanism and the paint box, the white mold can be dried without manual coating, and the functions of reducing bumps and wear can be achieved.

[0063] 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 white film drying production line, comprising a bracket (1), characterized in that: A linear motor (2) is fixed on the bracket (1); three slides (3) are fixed to the output end of the linear motor (2); a first electric telescopic rod (4) is fixed to the front end of each slide (3) by means of bolts; a circular plate (5) is fixed below the first electric telescopic rod (4) by means of bolts; a first clamping portion is provided at the bottom of the circular plate (5); a painting mechanism is provided below the left and right first clamping portions; the painting mechanism comprises a base (76); a high-pressure sprayer (77) is fixed above the base (76); a rotating drum (71) is fixed to the output end of the high-pressure sprayer (77); the rotating drum (71) An outer cylinder (72) is rotatably connected to the outer cylinder (71) through a placement rod (70), a through hole is formed at the front end of the outer cylinder (72), and teeth (75) are formed at a position corresponding to the through hole of the rotating cylinder (71). A third motor (73) is fixed at the front end of the outer cylinder (72), a third gear (74) is fixed at the output end of the third motor (73), and the third gear (74) is meshed with the teeth (75). The inner diameter of the outer cylinder (72) is the same as the outer diameter of the circular plate (5), a fixing ring (64) is fixed outside the outer cylinder (72), and a third electric telescopic rod (63) is fixed at the bottom of the fixing ring (64); A paint box (14) is arranged below the first clamping portion located in the middle. A fixed leg (13) is fixed to the bottom of the paint box (14). Two mounting angle pieces (24) are fixed to the bottom of the paint box (14). A first motor (25) is fixed to each of the two mounting angle pieces (24). Six rotating rods are passed through the bottom of the paint box (14). The six rotating rods are arranged in groups of three and are symmetrically distributed front to back. Two first motors (25) are connected to one of the rotating rods in each group through a coupling. A stirring blade (27) is fixed to the rotating rod. The stirring blade (27) is located below the metal mesh (20). The rotating rods located on the left and right sides are key-connected to the first sprocket (26). The rotating rods located in the middle position The upper key of the rotating rod is connected to the second sprocket (29) and the second gear (65), the first sprocket (26) and the second sprocket (29) are meshed with a chain (28), the bottom of the paint box (14) is rotatably connected to the first gear (30), the front and rear sides of the paint box (14) are fixed with a limit frame (32), a rack (31) slides in the limit frame (32), the rack (31) is meshed with the first gear (30), a connecting rod (33) is vertically fixed at the top of the rack (31), a mounting box (34) is fixed at the top of the connecting rod (33), a long-haired paint brush (37) is fixed at the bottom of the mounting box (34), and the long-haired paint brush (37) is located on the inner wall of the paint box (14).

2. The lost foam white film drying production line according to claim 1, characterized in that: A button (36) is fixed in the installation box (34), and square holes are provided on both sides of the installation box (34). A slope movable block (35) is inserted into each of the two square holes. A third fixing plate (78) is fixed on the top of the slope movable block (35), and a second spring (38) is fixed between the third fixing plate (78) and the inner wall of the installation box (34). A resistance block (66) is integrally formed on the top of the paint box (14), and the slope movable block (35) contacts the resistance block (66). The slope movable block (35) contacts the button (36), and the button (36) is electrically connected to the first motor (25).

3. The lost foam white film drying production line according to claim 1 is characterized in that: The first clamping portion comprises a square groove formed below the circular plate (5), a first double-headed motor (6) being fixed in the square groove, a first lead screw (7) being fixed at the output end of the first double-headed motor (6), a first slider (8) being threadedly connected to the first lead screw (7), a first square tube (9) being fixed at the bottom of the first slider (8), a first movable rod (10) being inserted into the first square tube (9), first fixing plates (11) being fixed at opposite ends of the tops of the two first movable rods (10), a first spring (12) being fixed between the first fixing plate (11) and the first slider (8), and silicone rubber layers being adhered to the opposite ends of the two first movable rods (10).

4. The lost foam white film drying production line according to claim 1 is characterized in that: A dipping mechanism is arranged below the first clamping portion located at the middle position, and the dipping mechanism comprises a second double-headed motor (16) fixed at the bottom of the paint box (14), a rotating shaft (21) is fixed at the output end of the second double-headed motor (16), a first bevel gear (22) is fixed at one end of the rotating shaft (21) away from the second double-headed motor (16), slide rails (15) are fixed on both the left and right sides of the paint box (14), a second lead screw (17) is rotatably connected in the slide rail (15), a first magnetic block (18) is threadedly connected on the second lead screw (17), limiting grooves are arranged on both the left and right sides of the inner wall of the paint box (14), a second magnetic block (19) is slidably arranged in the limiting groove, the second magnetic block (19) is magnetically connected to the first magnetic block (18), a metal mesh (20) is fixed between the two second magnetic blocks (19), a second bevel gear (23) is fixed at the bottom of the second lead screw (17), and the second bevel gear (23) is meshed with the first bevel gear (22).

5. The lost foam white film drying production line according to claim 1 is characterized in that: A material conveying mechanism is arranged behind the first clamping portion, and the material conveying mechanism comprises a heat preservation tube (50), a first conveyor belt (51) is rotated inside the heat preservation tube (50), a second electric telescopic rod (52) is fixed at a position in front of the first conveyor belt (51) inside the heat preservation tube (50), a placement rack (53) is fixed on the top of the second electric telescopic rod (52), a placement frame (54) is placed on the top of the placement rack (53), a transfer mechanism is arranged on the top of the placement frame (54), and a square opening is opened at a front position on the top of the heat preservation tube (50), and the inner diameter of the square opening is the same as the outer diameter of the placement frame (54).

6. The lost foam white film drying production line according to claim 5 is characterized in that: The transfer mechanism comprises a mounting frame (67), a second motor (39) is fixed at the rear end of the mounting frame (67), a third lead screw (40) is fixed at the output end of the second motor (39), the third lead screw (40), a sliding plate (41) is threadedly connected to the third lead screw (40), a sliding rod (49) is passed through the right side of the sliding plate (41), the sliding rod (49) is fixed to the mounting frame (67), a limiting groove is provided at the front end of the sliding plate (41), a third double-headed motor (42) is fixed in the limiting groove, and the third double-headed motor ( A fourth lead screw (43) is fixed to the output end of the second slider (42), a second slider (44) is threadedly connected to the fourth lead screw (43), a second square tube (45) is fixed to the front end of the second slider (44), a second movable rod (46) is inserted into the second square tube (45), a second fixed plate (47) is fixed to the rear opposite ends of the two second movable rods (46), a third spring (48) is fixed between the second fixed plate (47) and the second slider (44), and silicone rubber layers are adhered to the opposite ends of the two second movable rods (46).

7. The lost foam white film drying production line according to claim 6 is characterized in that: The rear end of the heat preservation cylinder (50) is connected to a drying room (55), an electric heating plate (56) is fixed to the inner wall of the drying room (55), a plurality of supply and exhaust fans (57) are fixed at the top of the inner wall of the drying room (55), a second conveyor belt (58) rotates in the drying room (55), the second conveyor belt (58) is vertically distributed with the first conveyor belt (51), a vertical plate (81) is arranged at the rear of the second conveyor belt (58), the vertical plate (81) is fixed in the drying room (55), three fourth electric telescopic rods (79) are passed through the vertical plate (81), the fixed end of the fourth electric telescopic rod (79) is fixed to the vertical plate (81) by bolts, a push plate (80) is fixed to the front end of the fourth electric telescopic rod (79), the three fourth electric telescopic rods (79) correspond to the positions of the first conveyor belt (51) respectively, and the push plate (80) contacts the placement frame (54).

8. The lost foam white film drying production line according to claim 7, characterized in that: The front end of the heat preservation cylinder (50) is connected to an air duct (68), one end of the air duct (68) away from the heat preservation cylinder (50) is fixed to the rear of the outer cylinder (72), one end of the air duct (68) close to the outer cylinder (72) is rotatably connected to a spring flip cover (69), the bottom of the outer cylinder (72) is connected to a ground cylinder (60) through a bellows (59), a through hole is provided on the right side of the ground cylinder (60), and placement holes are provided at the center and near the through hole of the top of the ground cylinder (60), a pull-out plate (61) is placed in the placement hole, and a filter screen (62) is installed on the pull-out plate (61).

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