An automated feeding and discharging device and method for roller spraying.

Abstract

This invention discloses a fully automated feeding and discharging apparatus and method for roller spraying. The apparatus includes a roller unit, a spraying unit, a feeding conveyor unit, a discharging conveyor unit, and a receiving unit. The roller unit includes a roller body, within which a stirring baffle is installed. The stirring baffle is used to push the product to be sprayed from the roller opening into the roller body and to push the sprayed product out of the roller opening from the roller body. Transition devices are provided in the feeding conveyor unit, the discharging conveyor unit, and / or the receiving unit to ensure that the products conveyed by the feeding conveyor unit, the discharging conveyor unit, and / or the receiving unit are smoothly conveyed to the next unit. The fully automated feeding and discharging method and apparatus for roller spraying provided by this invention are suitable for roller spraying of small-sized product surfaces.

Description

Technical Field

[0001] This invention belongs to the field of product surface rolling spraying technology, specifically relating to a fully automatic roller spraying device and method for feeding and discharging materials. Background Technology

[0002] Spray coating is a coating method that uses a spray gun or disc atomizer to disperse the material into uniform and fine droplets using pressure or centrifugal force, and then applies the mixture to the surface of the object being coated. Spray coating is a highly efficient production method suitable for both manual labor and automated industrial production. It has a wide range of applications, spanning all sectors of the national economy and including cutting-edge technologies. It is primarily used in hardware, plastics, furniture, and shipbuilding, and is currently the most widely used coating method. Using spray coating technology, coatings with wear-resistant, corrosion-resistant, heat-insulating, conductive, insulating, sealing, lubricating, and other special mechanical and chemical properties can be obtained on various substrates.

[0003] Currently, the spraying methods for small-sized products are divided into manual spraying and roller spraying.

[0004] Manual spraying involves applying the coating by hand and then drying it in an oven. This method is labor-intensive, has a high defect rate, and is physically demanding, especially when spraying small, complex products where the defect rate is extremely high and costs increase exponentially. Furthermore, the spraying solvents contain a large number of harmful substances, which not only pollute the environment but also seriously endanger the health of the operators.

[0005] Roller coating involves placing the product inside a roller, which rotates and tumbles the product while simultaneously applying the coating. Heated air is blown into the roller to maintain a set temperature. This method allows for the mass production of small, complex-shaped products, significantly improving production efficiency compared to manual coating. However, currently available roller coating methods and equipment have the following problems:

[0006] Firstly, the level of automation is low, and manual feeding and unloading are generally used. The feeding and unloading process takes a long time, which reduces the utilization rate of the equipment. Some materials are fed manually and unloaded by tilting the material cylinder. Due to the large tilting height, it is very easy to cause the product to chip or peel off the paint, resulting in more defective products, which affects production costs and reduces actual production efficiency.

[0007] Secondly, some roller coating equipment uses a semi-sealed structure with an open drum cover. The spray gun is located outside the cover, spraying paint onto the product inside the drum through the opening in the cover. This results in the spray gun being far from the product, leading to a lower paint coverage rate. Furthermore, some spray can drift into the external environment, causing pollution and harming the health of operators. Other equipment uses a fully sealed cover structure, with the spray gun completely sealed inside the drum. The hot air inside can damage the spray gun, affecting the coating effect. It also makes it difficult to observe the paint application on the product and adjust process parameters. Summary of the Invention

[0008] To address the aforementioned problems in the existing technology, this invention provides a fully automatic feeding and discharging device and method for roller spraying.

[0009] This invention provides a fully automatic feeding and discharging device for roller spraying, the device comprising a roller unit, a spraying unit, a feeding conveying unit, a discharging conveying unit, and a receiving unit;

[0010] The roller unit includes a roller body, and a stirring baffle is provided inside the roller body. The stirring baffle is used to push the product to be sprayed from the roller opening into the roller body and to push the sprayed product out of the roller opening from the roller body.

[0011] Transition devices are provided in the feeding conveying unit, discharging conveying unit and / or receiving unit to ensure that the products conveyed by the feeding conveying unit, discharging conveying unit and / or receiving unit can be smoothly conveyed to the next unit.

[0012] According to an embodiment of the present invention, the stirring baffle is disposed on the inner wall of the drum body, preferably extending from the bottom of the drum body to the drum opening. Preferably, the number of stirring baffles can be one, two or more; more preferably, when the number of stirring baffles is not less than two, the stirring baffles are arranged at intervals.

[0013] According to an embodiment of the present invention, the stirring baffle is spiral in shape, preferably a spiral stirring baffle extending from the bottom of the drum to the drum opening.

[0014] According to an embodiment of the present invention, the roller unit includes a roller insulation cavity, and the roller body is disposed within the roller insulation cavity.

[0015] According to an embodiment of the present invention, the roller unit includes a roller coupling and a roller rotary motor. The roller coupling and the roller rotary motor can drive the roller body to rotate in both the forward and reverse directions. When the roller body rotates in the forward direction, the product to be coated is pushed by the stirring baffles and gathers towards the bottom of the roller body; when the roller body rotates in the reverse direction, the coated product is pushed by the stirring baffles and conveyed from the roller body to the cylinder opening.

[0016] According to an embodiment of the present invention, the roller unit includes a roller cover for sealing the roller body and the roller insulation cavity.

[0017] According to an embodiment of the present invention, the roller unit includes a roller cover lifting device for driving the movement of the roller cover to achieve sealing and opening of the roller body. When the roller cover moves above the roller, it can press down to close the roller. For example, the roller cover lifting device can be selected from devices known in the art, such as a lifting cylinder.

[0018] According to an embodiment of the present invention, the roller unit includes a roller cover bracket, and the roller cover and roller cover lifting device are fixed on the roller cover bracket.

[0019] According to an embodiment of the present invention, a flexible sealing structure is provided on the roller cover for sealing when the spray gun of the spraying unit enters and exits the roller.

[0020] According to an embodiment of the present invention, the spraying unit includes a spray gun disposed on the roller cover, and the spray gun can pass through the flexible sealing structure to enter and exit the roller to spray the product to be sprayed.

[0021] According to an embodiment of the present invention, the spraying unit includes an automatic spray gun pushing device, which is disposed on the roller cover and connected to the spray gun, and is used to control the movement position of the spray gun.

[0022] According to an embodiment of the present invention, the number of roller bodies and roller covers may be the same or different. When the number of roller bodies and roller covers is the same, each roller body can be equipped with one roller cover to achieve simultaneous spraying at multiple stations. When the number of roller covers is less than the number of roller bodies (for example, when the number of roller covers is one and the number of rollers is not less than two), the roller cover support can move along the arrangement direction of the roller bodies. At this time, the products to be sprayed in the roller bodies are sprayed one by one. That is, after the spraying of the products in one roller body is completed, the spray gun is withdrawn from the roller, and the roller cover moves to the next station under the drive of the roller cover support.

[0023] According to an embodiment of the present invention, the fully automatic feeding and discharging device for roller spraying includes a heating device connected to the roller insulation cavity, which is used to deliver hot air into the roller insulation cavity to preheat the product to be sprayed inside the roller body, so that the spraying is in a suitable temperature environment.

[0024] Preferably, the heating device has a hot air inlet and an exhaust outlet. The hot air inlet is used to deliver hot air into the roller insulation cavity, and the exhaust outlet is used to discharge the sprayed spray, preferably to the exhaust gas treatment unit described below.

[0025] Preferably, the number of heating devices can be the same as or different from the number of drum insulation cavities. When the number of heating devices is the same as the number of drum insulation cavities, each heating device heats one drum body independently. Alternatively, the number of heating devices can be less than the number of drum bodies, meaning multiple drum bodies can share one heating device.

[0026] According to an embodiment of the present invention, the transition device may be an inclined plate. Preferably, the angle between the inclined plate and the horizontal plane is 35-55°.

[0027] According to an embodiment of the present invention, the feeding conveying unit includes a feeding conveyor belt, a feeding transition device, and a starting telescopic device. The feeding transition device is disposed below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by the starting telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the roller opening.

[0028] According to an embodiment of the present invention, the discharge conveying unit includes a discharge conveyor belt and a discharge transition device. The discharge transition device is disposed on the inner wall of the roller insulation cavity or below the roller insulation cavity, and is used to smoothly transfer the coated product onto the discharge conveyor belt.

[0029] Preferably, when the discharge transition device is installed on the inner wall of the roller insulation cavity, one end of the discharge transition device is located below the roller opening, and the other end is fixed on the inner wall at the outlet of the insulation cavity; preferably, the inclination direction of the discharge transition device allows the sprayed product to fall smoothly onto the discharge conveyor belt.

[0030] Preferably, when the discharge transition device is located below the drum insulation cavity, one discharge transition device is provided below each drum insulation cavity, and each discharge transition device passes through the shell of the equipment;

[0031] The ends of each discharge transition device extend beyond the roller opening, allowing the coated product to fall onto the ends of each discharge transition device. The height of the ends is higher than the tail (e.g., about 5cm higher), facilitating the transport of the coated product. The tails of each discharge transition device converge, and the converged tail ends are located at the upper end of the discharge conveyor belt.

[0032] According to an embodiment of the present invention, the receiving unit includes a receiving container, a receiving workbench, and a receiving transition device. The receiving workbench is connected to the discharge conveyor belt, and the receiving transition device is disposed between the receiving workbench and the receiving container to allow the coated product to fall smoothly into the receiving container. The receiving workbench can be configured with one or more stations according to the number of coating stations and production requirements.

[0033] According to an embodiment of the present invention, the fully automatic feeding and discharging device for roller spraying includes an exhaust gas treatment unit, which is connected to the roller insulation cavity. Preferably, the exhaust gas treatment unit includes a filter and a spray tower, which are installed at the exhaust port of the heating device. The exhaust gas from the exhaust port first passes through the filter, then is sent into the spray tower, and then discharged.

[0034] Preferably, the number of exhaust gas treatment units can be the same as or different from the number of heating devices. For example, when the two are the same, each heating device is equipped with a separate exhaust gas treatment unit. Alternatively, the number of exhaust gas treatment units can be less than the number of heating devices, meaning multiple heating devices can share one exhaust gas treatment unit.

[0035] According to an embodiment of the present invention, the fully automatic feeding and discharging device for roller spraying includes an automatic weighing and feeding unit. The automatic weighing and feeding unit includes a vibrating hopper, an electronic scale, and a conveyor belt mounted on the electronic scale, which can precisely control the weight of the product to be sprayed each time it is fed. The vibrating hopper transports the product to the weighing device, and closes the hopper after the set weight is reached.

[0036] Preferably, the conveyor belt mounted on the electronic platform is connected to the feeding transition device.

[0037] According to an embodiment of the present invention, the fully automatic roller coating feeding and discharging device further includes a control system. Preferably, the control system is electrically connected to the roller unit, the coating unit, the feeding conveyor unit, the starting telescopic device, the discharging conveyor unit, the receiving unit, the heating device, the exhaust gas treatment unit, and / or the automatic weighing and feeding unit. The control system realizes the staged braking of the components in each unit, coordinating to complete the product feeding, preheating, coating, exhaust gas treatment, discharging, and receiving.

[0038] According to an exemplary embodiment of the present invention, the fully automatic feeding and discharging device for roller coating includes:

[0039] The device includes a roller unit, a spraying unit, a feeding conveyor unit, a discharging conveyor unit, a receiving unit, a heating device, an exhaust gas treatment unit, an automatic weighing and feeding unit, and a control unit.

[0040] The automatic weighing and feeding unit includes a vibrating hopper, an electronic scale platform, and a conveyor belt mounted on the electronic scale platform. The conveyor belt mounted on the electronic scale platform is connected to the feeding and conveying unit.

[0041] The roller unit includes a roller body and a roller insulation cavity. A stirring baffle is provided in the roller body. The stirring baffle is used to push the product to be sprayed from the roller opening into the roller body and to push the sprayed product out of the roller opening from the roller body.

[0042] The spraying unit includes a spray gun, which is mounted on the roller cover. The spray gun can pass through the flexible sealing structure on the roller cover to enter and exit the roller body and spray the product to be sprayed.

[0043] The heating device is connected to the roller insulation cavity and is used to deliver hot air into the roller insulation cavity so that the spraying is in a suitable temperature environment.

[0044] The feeding and conveying unit includes a feeding conveyor belt, a feeding transition device, and a starting telescopic device. The feeding transition device is located below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by the starting telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the roller opening.

[0045] The exhaust gas treatment unit includes a filter and a spray tower. The filter and spray tower are installed at the exhaust port of the heating device. The exhaust gas from the exhaust port first passes through the filter, then is sent into the spray tower, and then is discharged.

[0046] The discharge conveying unit includes a discharge conveyor belt and a discharge transition device. The discharge transition device is located on the inner wall of the drum insulation cavity or below the drum insulation cavity, and is used to smoothly transfer the sprayed product from the drum opening to the discharge conveyor belt.

[0047] The receiving unit includes a receiving container, a receiving workbench, and a receiving transition device. The receiving workbench is connected to the discharge conveyor belt, and the receiving transition device is located between the receiving workbench and the receiving container so that the coated product falls smoothly into the receiving container.

[0048] The control system is electrically connected to the roller unit, spraying unit, feeding conveyor unit, starting telescopic device, discharging conveyor unit, receiving unit, heating device, exhaust gas treatment unit and / or automatic weighing and feeding unit. The control system realizes the staged braking of the components in each unit, and coordinates to complete the product feeding, preheating, spraying, exhaust gas treatment, discharging and receiving.

[0049] Preferably, one or more spraying stations can be set up according to the number of spraying stations (the number of spraying stations is the same as the number of rollers) and production requirements, and one or more spraying units, heating devices, exhaust gas treatment units, feeding conveying units, discharging conveying units and / or receiving units can be set up accordingly.

[0050] The present invention also provides a fully automated feeding and discharging method for roller coating, wherein the method is preferably carried out in the above-mentioned apparatus, and the method includes the following steps:

[0051] The product to be sprayed enters the roller body smoothly through the feeding transition device. After the feeding is completed, the roller cover seals the roller body, and the heating device delivers hot air into the roller body to preheat the product to be sprayed.

[0052] After the product to be sprayed reaches the preheating set time or temperature, the spray gun enters the roller body and sprays the product to be sprayed. The exhaust gas generated during spraying is treated by the exhaust gas treatment unit and then discharged.

[0053] After the spraying is completed, the roller cover and spray gun are removed or moved to the next spraying station. The product to be sprayed is output from the roller body and smoothly sent into the receiving unit through the discharge transition device.

[0054] According to an embodiment of the present invention, the product to be sprayed slides down to the inlet of the drum through the feeding transition device, while the drum body rotates in the forward direction, and the product to be sprayed is pushed to the bottom of the drum along the stirring baffles on the inner wall of the drum.

[0055] According to an embodiment of the present invention, after all the products to be sprayed are fed into the roller, the roller cover automatically moves above the roller and presses down to close the roller.

[0056] According to an embodiment of the present invention, after the product is preheated, the spray gun automatically moves to the set position and automatically starts spraying. The product is continuously tumbling under the stirring action of one or more stirring baffles protruding on the inner wall of the roller body, so that the paint sprayed by the spray gun is evenly adhered to all surfaces of the product.

[0057] According to an embodiment of the present invention, after the paint spraying reaches the set parameters, the spray gun is turned off and automatically returns to the initial position. The roller cover is raised and moved to the set working position, and the roller opening is opened.

[0058] According to an embodiment of the present invention, after the drum opening is opened, the drum body rotates in the opposite direction, and the product is pushed out of the drum opening from the bottom of the drum along the stirring baffles on the inner wall of the drum body.

[0059] According to an embodiment of the present invention, the discharge transition device can cause the coated product to slide onto the discharge conveyor belt, thereby reducing defects such as edge chipping and paint peeling caused by direct product drop and improving the product qualification rate.

[0060] According to an embodiment of the present invention, the coated product is conveyed to a container at a designated receiving position after sliding down onto the discharge conveyor belt.

[0061] According to an embodiment of the present invention, a receiving transition device is provided between the discharge conveyor belt and the receiving container to allow the material to fall slowly into the container, so as to avoid defects such as edge chipping and paint peeling, and improve the product qualification rate.

[0062] Beneficial effects of the present invention

[0063] The present invention provides a fully automatic feeding and discharging method and apparatus for roller spraying, which is suitable for roller spraying of small-sized product surfaces. Compared with the prior art, it has significant advantages and remarkable progress:

[0064] 1) The fully automated feeding and discharging system greatly reduces the labor intensity of operators;

[0065] 2) The automatic discharge method with rotating drum and the setting of the transition device reduce the product discharge drop, reduce defects caused by collisions, and improve the product qualification rate compared with the existing overall tilting discharge method.

[0066] 3) The equipment can be set up with multiple spraying stations, and different processes can be carried out at different stations at the same time, which largely avoids problems such as paint clogging the spray gun and greatly improves the production efficiency of the equipment.

[0067] 4) The equipment's spraying station can be completely sealed, and the exhaust gas generated during the production process will not affect the workshop's air environment. Operators are far away from the spraying station, which can better protect personnel safety compared with existing equipment. Attached Figure Description

[0068] Figure 1 This is a schematic diagram (front view) of the layout of a device according to the present invention.

[0069] Figure 2 This is a schematic diagram (top view) of the layout of a device according to the present invention.

[0070] Figure 3 This is an external view of a device according to the present invention.

[0071] Figure 4 This is a top view of the layout of a device according to the present invention.

[0072] Figure 5 This is a diagram showing the layout structure of a device according to the present invention.

[0073] Figure 6 This is a schematic diagram of the roller structure of the present invention.

[0074] Figure 7 This is a structural diagram of an automatic sealing system for a device roller according to the present invention.

[0075] Figure 8 for Figure 4 and Figure 5 A schematic diagram of the intermediate discharge transition device.

[0076] The labels in the attached diagram are as follows: 11-Drum body; 12-Drum coupling; 13-Drum rotary motor; 14-Spiral mixing baffle; 15-Drum cover; 16-Discharge transition device; 17-Infeed transition device; 18-Infeed conveyor belt; 19-Drum insulation cavity; 110-Spray gun; 111-Material guiding device; 112-Material conveyor belt; 113-Material guiding device lifting mechanism; 114-Vibrating feeder; 115-Equipment protective cover; 116-Effect gas treatment device; 117-Discharge conveyor belt; 118-Heat... 119 - Air supply unit; 120 - Receiving workbench; 121 - Receiving container; 31 - Material weighing device; 32 - Equipment casing; 33 - Feeding port; 34 - Control panel; 45 - Feeding conveyor belt; 46 - Automatic roller sealing system; 47 - Roller; 48 - Hot air blower; 49 - Roller mounting rod; 40 - Moving bracket; 41 - Roller cover lifting cylinder; 422 - Spray gun with telescopic mechanism; 423 - Flexible sealing plate; 44 - Translation slide; 45 - Translation guide rail; 161 - Support frame; 162 - Inclined discharge transition track. Detailed Implementation

[0077] The technical solution of the present invention will be further described in detail below with reference to specific embodiments. It should be understood that the following embodiments are merely illustrative and explanatory of the present invention, and should not be construed as limiting the scope of protection of the present invention. All technologies implemented based on the above content of the present invention are covered within the scope of protection intended by the present invention.

[0078] Unless otherwise stated, the raw materials and reagents used in the following examples are commercially available products or can be prepared by known methods.

[0079] Example 1

[0080] like Figure 1-2 The fully automatic feeding and discharging device for roller spraying shown in Figure 6 is suitable for fully automated production, and the embodiment has 3 spraying stations in the process.

[0081] The device includes: a spraying station consisting of a drum body 11, a drum coupling 12, a drum rotary motor 13, a spiral stirring baffle 14, a drum insulation cavity 19, and a hot air device 118; a movable drum sealing cover consisting of a drum cover 15 and a spray gun 110; a discharge conveying device consisting of a discharge transition device 16 and a discharge conveyor belt 117; a material conveying device consisting of a feed transition device 17, a feed conveyor belt 18, a material guiding device 111, a material guiding device lifting mechanism 113, and a material conveyor belt 112; a weighing and feeding system consisting of a vibrating feeder 114 and a material weighing device 121; a receiving device consisting of a receiving workbench 119 and a receiving container 120; an equipment protective cover 115; and an exhaust gas treatment device 116.

[0082] Spiral stirring baffles 14 are disposed on the inner wall of the drum body 11, extending from the bottom of the drum body 11 to the drum opening. The drum body 11 is disposed inside the drum insulation cavity 19. The drum cover is moved by a drum cover lifting device (e.g., a lifting cylinder) to achieve the sealing and opening of the drum body; when the drum cover moves above the drum, it can press down to close the drum. The feeding transition device is disposed below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by activating a telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the drum opening. The discharging transition device 16 is disposed on the inner wall of the drum insulation cavity 19. One end of the discharging transition device is disposed below the drum opening, and the other end is fixed to the inner wall at the outlet of the insulation cavity; the tilt direction of the discharging transition device allows the sprayed product to fall smoothly onto the discharging conveyor belt.

[0083] The product is placed in the vibrating feeder 114, which feeds the product to the material weighing device 121. Once the set weight is reached, the vibrating feeder 114 stops feeding.

[0084] The conveyor belt on the material weighing device 121 transports the weighed products to the material conveyor belt 112. The material guide device 111 corresponding to the spraying station that needs to be fed is lowered to the feeding position by the material guide device lifting device 113. The material guide devices 111 of other stations are lifted to the non-feeding position by the material guide device lifting device 113. After the products arrive at the material guide device 111 corresponding to the spraying station that needs to be fed with the material conveyor belt 112, they are guided onto the feeding conveyor belt 18. The products enter the drum body 11 through the feeding transition device 17 along with the feeding conveyor belt 18. At this time, the drum body 11 rotates in the forward direction under the drive of the drum rotation motor 13 and the drum coupling 12. The products are pushed by the spiral stirring baffle 14 inside the drum and gather towards the bottom of the drum body 11.

[0085] After the material detection sensor installed on the feeding conveyor belt 18 detects that the product feeding is complete, the movable roller sealing cover, composed of the roller cover 15 and the spray gun 110, moves to the top of the roller insulation cavity 19 at the corresponding workstation to complete the workstation sealing. At this time, the hot air device 118 connected to the roller insulation cavity 19 continuously delivers hot air of a certain temperature into the roller insulation cavity 19, and the product inside the roller body 11 is uniformly preheated under the stirring action of the spiral stirring baffle 14.

[0086] A flexible sealing device is provided on the drum cover 15 for the spray gun 110 to enter and exit the drum. After the product is preheated to the set time or temperature, the spray gun 110 installed on the drum cover 15 passes through the flexible sealing device on the drum cover and extends into the set position inside the drum body 11. The spray gun 110 is turned on, and the paint is sprayed out in a mist. The product inside the drum body 11 is evenly coated with paint under the stirring action of the spiral stirring baffle 14.

[0087] The paint-containing exhaust gas generated during spraying is drawn into the exhaust gas treatment device 116 by the fan, treated, and then discharged.

[0088] After the product spraying is completed, the movable roller sealing cover, consisting of the roller cover 15 and the spray gun 110, moves to the next spraying station. The hot air device 118 stops supplying hot air to the roller insulation cavity 19. The roller body 11 rotates in the opposite direction under the drive of the roller rotation motor 13 and the roller coupling 12. The product is pushed by the spiral stirring baffle 14 and conveyed to the upper opening of the roller body 11, falling onto the discharge transition device 16 and being sent to the discharge conveyor belt 117. The product is conveyed by the discharge conveyor belt 117 to the receiving container 120 on the receiving workbench 119, completing the spraying and discharge process.

[0089] Example 2

[0090] like Figure 3-5 The fully automatic feeding and discharging device for roller spraying shown is suitable for dual-station embodiments where the weight or quantity of incoming materials is fixed or the space is limited.

[0091] The device includes a housing 31, a feeding port 32, a control panel 33, a feeding conveyor belt 41, and a feeding transition device 17; and an automatic roller sealing system 42 composed of a roller cover 15, a moving support 422, a roller cover lifting cylinder 423, a spray gun 424 with a telescopic mechanism, a flexible sealing plate 425, a translational slide 426, and a translational guide rail 427. Figure 7 ); Drum 43, consisting of drum body 11, spiral stirring baffle 14, and drum mounting rod 433; Drum insulation cavity 19; Hot air blower 45; Discharge transition device 16; Discharge conveyor belt 117; Tail gas treatment device 116; 120 Receiving container.

[0092] Spiral stirring baffles 14 are disposed on the inner wall of the drum body 11, extending from the bottom of the drum body 11 to the drum opening. The drum body 11 is disposed inside the drum insulation cavity 19. The feeding transition device is disposed below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by activating the telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the drum opening. The discharging transition device 16 is disposed on the inner wall of the drum insulation cavity 19. One end of the discharging transition device is disposed below the drum opening, and the other end is fixed to the inner wall at the outlet of the insulation cavity. The inclination direction of the discharging transition device allows the sprayed product to fall smoothly onto the discharging conveyor belt.

[0093] Products of a fixed weight or quantity are placed into the feeding port 32. The feeding conveyor belt 41 moves to the corresponding position of the feeding port, the baffle of the feeding port 32 opens, and all the products fall onto the feeding conveyor belt 41. The feeding conveyor belt 41 moves to the spraying station that needs to be fed, and the roller 43 of the station starts to rotate in the forward direction. At the same time, the feeding transition device 17 extends forward into the roller body 43, and the feeding conveyor belt 41 conveys the products forward. After passing through the feeding transition device 17, the products fall into the roller body 11, and the products are pushed to the bottom of the roller body 11 by the spiral stirring baffle 14.

[0094] After the product is fed, the roller cover 15 and the moving bracket move along the translation slide 426 and translation guide rail 427 to the upper opening of the roller insulation cavity 19 at the corresponding work position. The roller cover lifting cylinder 423 pushes the roller cover 15 down to seal the roller insulation cavity 19, and the hot air blower 45 sends hot air into the roller insulation cavity 19.

[0095] After the product is preheated to the set time or temperature, the spray gun 424 with telescopic mechanism passes through the flexible sealing plate 425 and extends into the set position inside the drum 43. The spray gun 424 with telescopic mechanism is turned on, and the product inside the drum 43 is evenly coated with paint under the stirring of the spiral stirring baffle 14.

[0096] The paint-containing exhaust gas generated during spraying is drawn into the exhaust gas treatment device 116 by the fan, treated, and then discharged.

[0097] After the product is coated, the spray gun 424 with the telescopic mechanism retracts, the hot air blower 45 stops supplying hot air, and the roller cover lifting cylinder 423 drives the roller cover 15 to rise. The roller cover 15 and the moving bracket 422 move to another station along the translation slide 426 and translation guide rail 427. The roller 43 reverses, and the spiral stirring baffle 14 pushes the product out of the roller 43, through the discharge transition device 16, onto the discharge conveyor belt 117, and is transported to the receiving container 120.

[0098] The structure of the discharge transition device is as follows Figure 8 As shown, when the discharge transition device 16 is installed below the drum insulation cavity 19, a discharge transition device is installed below each drum insulation cavity, and each discharge transition device passes through the equipment shell.

[0099] The ends of each discharge transition device extend beyond the roller opening, allowing the coated product to fall onto the ends of each discharge transition device. The ends are supported by the support frame 161, and the height of the ends is higher than that of the tail, which facilitates the conveying of the coated product. The tails of each discharge transition device converge to form an inclined discharge transition track 162, and the converging tail ends are located at the upper end of the discharge conveyor belt.

[0100] Example 3

[0101] A method for fully automated feeding and unloading of small-sized products using the apparatus provided in Embodiment 1 or Embodiment 2 includes the following steps:

[0102] The product to be sprayed enters the roller body smoothly through the feeding transition device. After the feeding is completed, the roller cover seals the roller body, and the heating device delivers hot air into the roller body to preheat the product to be sprayed.

[0103] After the product to be sprayed reaches the preheating set time or temperature, the spray gun enters the roller body and sprays the product to be sprayed. The exhaust gas generated during spraying is treated by the exhaust gas treatment unit and then discharged.

[0104] After the spraying is completed, the roller cover and spray gun are removed or moved to the next spraying station. The product to be sprayed is output from the roller cylinder and smoothly sent into the receiving unit through the discharge transition device.

[0105] The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic feeding and discharging device for roller spraying, characterized in that, The device includes a roller unit, a spraying unit, a feeding conveyor unit, a discharging conveyor unit, a receiving unit, a heating device, and an exhaust gas treatment unit. The roller unit includes a roller body, a roller insulation cavity, a roller cover, a roller cover bracket, and a roller cover lifting device. The roller body is disposed within the roller insulation cavity, and a stirring baffle is installed within the roller body. The stirring baffle is used to push the product to be sprayed from the roller opening into the roller body and to push the sprayed product out of the roller opening from the roller body. The roller cover is provided with a flexible sealing structure for sealing when the spray gun of the spraying unit enters and exits the roller. The roller cover lifting device is used to drive the movement of the roller cover to achieve sealing and opening of the roller body. The roller cover and the roller cover lifting device are fixed on the roller cover bracket. The spraying unit includes a spray gun and an automatic spray gun pushing device; the spray gun is mounted on the roller cover and can pass through the flexible sealing structure to enter and exit the roller to spray the product to be sprayed; the automatic spray gun pushing device is mounted on the roller cover and connected to the spray gun, and is used to control the movement position of the spray gun. The number of roller covers is less than the number of roller bodies. The roller cover bracket can move along the arrangement direction of the roller body. At this time, the products to be sprayed in the roller body are sprayed one by one. After the spraying of the products in the roller body is completed, the spray gun is withdrawn from the roller, and the roller cover moves to the next station under the drive of the roller cover bracket. The heating device is connected to the drum insulation cavity and is used to deliver hot air into the drum insulation cavity. Transition devices are provided in the feeding conveying unit, discharging conveying unit and receiving unit to ensure that the products conveyed by the feeding conveying unit, discharging conveying unit and receiving unit can be smoothly conveyed to the next unit. The exhaust gas treatment unit is connected to the drum insulation cavity. The exhaust gas treatment unit includes a filter and a spray tower. The filter and spray tower are located at the exhaust port of the heating device. The exhaust gas from the exhaust port first passes through the filter, then is sent into the spray tower, and then is discharged.

2. The apparatus according to claim 1, characterized in that, The stirring baffle is disposed on the inner wall of the drum body and extends from the bottom of the drum body to the drum opening; The stirring baffle is spiral in shape.

3. The apparatus according to claim 1, characterized in that, The roller unit includes a roller coupling and a roller rotary motor, which can drive the roller body to rotate in both the forward and reverse directions.

4. The apparatus according to claim 1, characterized in that, The heating device has a hot air inlet, which is used to deliver hot air into the heat-insulating cavity of the drum. And / or, the number of heating devices may be the same as or different from the number of drum insulation cavities.

5. The apparatus according to claim 1, characterized in that, The transition device is an inclined plate, and the angle between the inclined plate and the horizontal plane is 35-55°.

6. The apparatus according to claim 1, characterized in that, The feeding and conveying unit includes a feeding conveyor belt, a feeding transition device, and a starting telescopic device. The feeding transition device is located below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by the starting telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the roller opening.

7. The apparatus according to claim 1, characterized in that, The discharge conveying unit includes a discharge conveyor belt and a discharge transition device. The discharge transition device is located on the inner wall of the roller insulation cavity or below the roller insulation cavity, and is used to smoothly transfer the coated product onto the discharge conveyor belt.

8. The apparatus according to claim 7, characterized in that, When the discharge transition device is installed on the inner wall of the drum insulation cavity, one end of the discharge transition device is located below the drum opening, and the other end is fixed on the inner wall at the outlet of the insulation cavity; the inclination direction of the discharge transition device allows the sprayed product to fall smoothly onto the discharge conveyor belt. When the discharge transition device is located below the drum insulation cavity, one discharge transition device is installed below each drum insulation cavity, and each discharge transition device passes through the shell of the equipment. The ends of each discharge transition device extend beyond the roller opening, allowing the coated product to fall onto the ends of each discharge transition device. The height of the ends is higher than the tail end, facilitating the transport of the coated product. The tail ends of each discharge transition device converge, and the converged tail end is located at the upper end of the discharge conveyor belt.

9. The apparatus according to claim 1, characterized in that, The receiving unit includes a receiving container, a receiving workbench, and a receiving transition device. The receiving workbench is connected to the discharge conveyor belt, and the receiving transition device is located between the receiving workbench and the receiving container so that the coated product falls smoothly into the receiving container.

10. The apparatus according to claim 1, characterized in that, The fully automatic feeding and discharging device for roller spraying includes an automatic weighing and feeding unit; And / or, the fully automatic roller coating feeding and discharging device also includes a control system.

11. A fully automatic feeding and discharging device for roller spraying, characterized in that, The fully automatic feeding and discharging device for roller coating includes: The device includes a roller unit, a spraying unit, a feeding conveyor unit, a discharging conveyor unit, a receiving unit, a heating device, an exhaust gas treatment unit, an automatic weighing and feeding unit, and a control system. The automatic weighing and feeding unit includes a vibrating hopper, an electronic scale platform, and a conveyor belt mounted on the electronic scale platform. The conveyor belt mounted on the electronic scale platform is connected to the feeding and conveying unit. The roller unit includes a roller body, a roller insulation cavity, a roller cover, a roller cover bracket, and a roller cover lifting device. The roller body is disposed within the roller insulation cavity. A stirring baffle is installed within the roller body to push the product to be sprayed from the roller opening into the roller body and to push the sprayed product out of the roller opening from the roller body. The roller cover has a flexible sealing structure for sealing when the spray gun of the spraying unit enters and exits the roller. The roller cover lifting device drives the movement of the roller cover, realizing the sealing and opening of the roller body. The roller cover and the roller cover lifting device are fixed to the roller cover bracket. The spraying unit includes a spray gun and an automatic spray gun pushing device. The spray gun is mounted on the roller cover and can pass through the flexible sealing structure on the roller cover to enter and exit the roller body to spray the product to be sprayed. The automatic spray gun pushing device is mounted on the roller cover and connected to the spray gun to control the movement position of the spray gun. The number of roller covers is less than the number of roller bodies. The roller cover bracket can move along the arrangement direction of the roller body. At this time, the products to be sprayed in the roller body are sprayed one by one. After the spraying of the products in the roller body is completed, the spray gun is withdrawn from the roller, and the roller cover moves to the next station under the drive of the roller cover bracket. The heating device is connected to the roller insulation cavity and is used to deliver hot air into the roller insulation cavity so that the spraying is in a suitable temperature environment. The feeding and conveying unit includes a feeding conveyor belt, a feeding transition device, and a starting telescopic device. The feeding transition device is located below the feeding conveyor belt. The extension and retraction of the feeding transition device are controlled by the starting telescopic device. When the feeding transition device extends, it can smoothly transport the product to be sprayed from the feeding conveyor belt to the roller opening. The exhaust gas treatment unit is connected to the drum insulation cavity and includes a filter and a spray tower. The filter and spray tower are installed at the exhaust port of the heating device. The exhaust gas from the exhaust port first passes through the filter and is then sent into the spray tower before being discharged. The discharge conveying unit includes a discharge conveyor belt and a discharge transition device. The discharge transition device is located on the inner wall of the drum insulation cavity or below the drum insulation cavity, and is used to smoothly transfer the sprayed product from the drum opening to the discharge conveyor belt. The receiving unit includes a receiving container, a receiving workbench, and a receiving transition device. The receiving workbench is connected to the discharge conveyor belt, and the receiving transition device is located between the receiving workbench and the receiving container so that the coated product falls smoothly into the receiving container. The control system is electrically connected to the roller unit, spraying unit, feeding conveying unit, starting telescopic device, discharging conveying unit, receiving unit, heating device, exhaust gas treatment unit and / or automatic weighing and feeding unit; the control system realizes the staged braking of the components in each unit, and cooperates to complete the feeding, preheating, spraying, exhaust gas treatment, discharging and receiving of the product.

12. A fully automated feeding and discharging method for roller spraying, characterized in that, The method is performed within the apparatus described in any one of claims 1-11; The method includes the following steps: The product to be sprayed enters the roller body smoothly through the feeding transition device. After the feeding is completed, the roller cover seals the roller body, and the heating device delivers hot air into the roller body to preheat the product to be sprayed. After the product to be sprayed reaches the preheating set time or temperature, the spray gun enters the roller body and sprays the product to be sprayed. The exhaust gas generated during spraying is treated by the exhaust gas treatment unit and then discharged. After the spraying is completed, the roller cover and spray gun are removed or moved to the next spraying station. The product to be sprayed is output from the roller body and smoothly sent into the receiving unit through the discharge transition device.

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