Residual coating discharging device for environment-friendly coating production
By integrating clamping, flipping, centrifugation and scraping functions into the feeding device, the problem of cleaning residual paint in the material bucket during the production of environmentally friendly coatings has been solved, achieving efficient and safe residual liquid recycling and reducing production costs and environmental risks.
Patent Information
- Application Number
- CN202511366847.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-24
- Publication Date
- 2025-10-31
AI Technical Summary
In the production of environmentally friendly coatings, cleaning residual coatings in the bucket is time-consuming and labor-intensive, and existing methods pose environmental risks and are costly, failing to effectively solve the problem of sidewall adhesion.
Design a feeding device for residual paint used in environmentally friendly paint production, integrating clamping, turning, centrifugation and scraping functions. The residual liquid is collected by centrifugal rotation of the material bucket, and the bucket wall is scraped without dead angles by the scraper. Combined with the sealed feeding tray, the residual liquid is automatically recycled.
It significantly reduced residual liquid rate, reduced waste of high-value coatings, improved production efficiency, ensured operational safety, and achieved clean production.
Smart Images
Figure CN120864428A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the technical field of environmentally friendly coating recycling, and in particular to a device for discharging residual coatings used in the production of environmentally friendly coatings. Background Technology
[0002] In the production of environmentally friendly coatings (water-based / powder coatings), after the disperser has finished mixing, when the material is transferred to the next process, the residual coating on the barrel wall usually accounts for 3%-5%, which leads to significant loss of high-priced environmentally friendly resins (such as water-based polyurethane); at the same time, the residue dries and forms a skin, which is mixed into the next batch and causes product defects. Currently, the cleaning of residual paint inside the paint bucket is usually done by: 1. Manual scraping and emptying of buckets is not only time-consuming and labor-intensive, which restricts the production line's pace, but also poses certain environmental risks; 2. Pneumatic vibrators are ineffective against paste-like residues; high-viscosity coatings cannot detach from the container wall, resulting in minimal effectiveness. 3. The bottom of the bucket is designed with a conical drainage structure, which requires a custom container, has poor versatility, and cannot solve the problem of sidewall adhesion; 4. High-pressure water jet washing generates wastewater, increasing sewage treatment costs.
[0003] Therefore, there is an urgent need for an environmentally friendly coating production residual coating discharge device to empty the residual coating in the material tank. Summary of the Invention
[0004] The purpose of this invention is to provide a device for discharging residual coatings used in the production of environmentally friendly coatings, aiming to solve the problems in the prior art.
[0005] The present invention is implemented as follows: a feeding device for residual paint in the production of environmentally friendly paint includes a feeding clamp assembly and a residual material feeding rack, which are hinged by a hinge shaft and can rotate relative to each other around the shaft. The feeding clamp assembly is equipped with a lifting driven clamping mechanism, which is used to clamp the material barrel and drive it to complete the actions of self-rotation, lifting and flipping around the axis. The waste material unloading rack integrates an unloading mechanism, which includes: The wall scraping actuator includes a feeding disc and a rotating rod axially arranged through the feeding disc. The rotating rod is driven to rotate by a scraping motor and is driven to move up and down axially by the telescopic part of the lifting telescopic machine. The scraper assembly includes an openable scraper rod mounted on the top of a rotating rod, wherein a scraper blade is hinged to the scraper rod via a spring shaft, and the scraper blade can extend and retract radially as the rotating rod descends to dynamically conform to the curved surface of the inner wall of the material barrel; The clamping mechanism flips and inverts the opening of the bucket, which is then sealed and connected to the discharge tray, forming a channel for centrifugal discharge of residual liquid. The scraper removes residual material from the barrel wall during the lifting and lowering of the rotating rod, and guides the residual liquid out through the guide pipe.
[0006] Preferably, an opening and closing telescopic mechanism is provided between the material feeding clamp assembly and the waste material feeding rack, and the two ends of the opening and closing telescopic mechanism are respectively hinged to the material feeding clamp assembly and the waste material feeding rack; The bottom of the residual material unloading rack, away from the unloading clamp assembly, is equipped with casters.
[0007] Preferably, the unloading clamping assembly is vertically mounted with two guide rails, and the clamping mechanism includes a lifting plate slidably mounted on the guide rails; A lifting motor is installed at the bottom of the unloading clamp assembly, and the output shaft of the lifting motor is driven by a chain and sprocket assembly to pull the lifting plate.
[0008] Preferably, a tilting motor is installed on the lifting plate, and a rotating shaft driven to rotate by the tilting motor is connected to the lifting plate via a bearing. A clamp is installed at the end of the rotating shaft away from the lifting plate. The clamping seat is equipped with a clamping motor and a "U"-shaped guide plate. The output shaft of the clamping motor is sleeved with a drive gear that passes through the middle of the guide plate. The upper and lower surfaces of the guide plate are also slidably mounted with slides. The two slides are provided with tooth grooves on their opposite sides that mesh with the teeth on the surface of the drive gear.
[0009] Preferably, clamping arms are vertically mounted on the opposite outer ends of both carriages; Two guide rollers are connected to the opposite ends of the two clamping arms via bearings. A centrifugal motor for driving the guide rollers on the same side to rotate in the same direction is also installed on the outer side of the clamping arms.
[0010] Preferably, both the scraper motor and the lifting telescopic mechanism are installed at the bottom of the feeding tray; The telescopic part of the lifting telescopic machine is equipped with a lifting bracket, and the rotating rod is connected to the end of the lifting bracket through a bearing.
[0011] Preferably, the upper end bearing of the lifting bracket is connected to a rotating ring, which is driven to rotate by the output shaft of the scraper motor; The swivel ring is sleeved on the outside of the rotating rod, and a rib is provided on one side of the rotating rod. The inner wall of the swivel ring is provided with a rib groove corresponding to the rib.
[0012] Preferably, an "L"-shaped limiting rod is also installed on one side of the residual material unloading rack. The vertical part of the limiting rod is placed below the lifting bracket and is fitted with a sleeve. The top of the sleeve is connected to a top rod extending into the inside of the rotating rod. A partition is provided on the outer side of the lower end of the top rod, and a return spring is also sleeved on the outer side of the lower end of the top rod. The two ends of the return spring abut against the partition and the inner wall of the lifting bracket, respectively.
[0013] Preferably, a sleeve is fitted around the outside of the scraper rod, and a compression spring is also provided inside the sleeve, with the scraper blade installed at the end of the sleeve; The scraper rod has a toothed ring at the end away from the sleeve rod that is connected to the bearing at the end of the rotating rod, and the push rod has a toothed plate at the end inside the rotating rod that meshes with the teeth on the surface of the toothed ring.
[0014] Preferably, a scraper is also sleeved on the outside of the rotating rod, and the scraper abuts against the inner wall of the feeding tray.
[0015] The beneficial effects of the residual coating feeding device disclosed in this invention for environmentally friendly coating production are: 1. This invention integrates clamping, flipping, centrifugation, scraping, and recycling functions into one compact structure. Through the coordinated working mode of centrifugal pretreatment and mechanical scraping, the residual liquid is first centrifugally collected by the self-spinning of the material bucket, and then most of the liquid is centrifugally thrown out by the inverted feeding tray. Finally, the bucket wall is scraped without dead angles by adaptive scraper, which greatly reduces the residual liquid rate, significantly reduces the waste of raw materials for high-value environmentally friendly coatings, and reduces production costs. 2. This device requires no manual intervention, which not only improves production line efficiency but also avoids direct contact between operators and chemicals and volatile organic compounds, ensuring occupational health and safety. Furthermore, the entire feeding process is carried out in a closed system, effectively preventing pollution caused by paint volatilization and achieving clean production. 3. The scraper blades of the scraper assembly of this device are hinged by a spring shaft and equipped with a pressure spring, which can dynamically conform to different barrel diameters and inner wall curves to ensure uniform scraping effect. The scraper opening and closing control mechanism realizes the automatic switching between two modes of scraping the barrel wall and cleaning the bottom of the barrel under a single lifting drive, which is highly practical. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a residual coating feeding device for environmentally friendly coating production provided in an embodiment of the present invention; Figure 2 This is a rear view schematic diagram of a residual coating feeding device for environmentally friendly coating production provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a clamping mechanism for a feeding device for residual coatings used in the production of environmentally friendly coatings, provided in an embodiment of the present invention. Figure 4 This invention provides a device for discharging residual paint used in the production of environmentally friendly coatings. Figure 3 Another perspective illustration; Figure 5 This is a schematic diagram of the feeding mechanism of a residual coating feeding device for environmentally friendly coating production provided in an embodiment of the present invention; Figure 6 This invention provides a device for discharging residual paint used in the production of environmentally friendly coatings. Figure 5 A schematic diagram of the cross-sectional structure; Figure 7 This invention provides a device for discharging residual paint used in the production of environmentally friendly coatings. Figure 6 A schematic diagram of the partial internal view structure at point A in the diagram; Figure 8 This invention provides a device for discharging residual paint used in the production of environmentally friendly coatings. Figure 6 A schematic diagram of the partial internal view structure at point B; Figure 9 This is a schematic diagram of the residual coating scraping state of a residual coating feeding device for environmentally friendly coating production provided in an embodiment of the present invention.
[0017] Marker explanation: 1. Material clamping assembly; 2. Waste material unloading rack; 3. Clamping mechanism; 4. Unloading mechanism; 5. Material bucket; 11. Guide rail; 12. Telescopic mechanism; 21. Casters; 31. Lifting motor; 32. Chain and sprocket assembly; 33. Lifting plate; 34. Tilting motor; 35. Clamping seat; 36. Clamping motor; 37. Slide carriage; 38. Clamping arm; 351. Rotating shaft; 352. Guide plate; 361. Drive gear; 381. Centrifugal motor; 382. Guide roller; 41. Feeding tray; 42. Guide pipe; 43. Lifting telescopic mechanism; 44. Scraper motor; 45. Rotating rod; 46. Sleeve; 47. Scraper rod; 411. Scraper; 431. Lifting bracket; 432. Rotary ring; 461. Limiting rod; 462. Push rod; 463. Tooth plate; 4621. Spacer; 4622. Return spring; 471. Scraper blade; 472. Sleeve rod; 473. Compression spring; 474. Gear ring. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0019] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0020] The implementation of the present invention will be described in detail below with reference to specific embodiments.
[0021] In this embodiment: Reference Figures 1-2 The diagram shows a preferred embodiment of the present invention.
[0022] This embodiment provides a feeding device for residual coatings used in the production of environmentally friendly coatings. The device includes a feeding clamp assembly 1 and a residual material feeding rack 2. An opening and closing telescopic mechanism 12 is provided between the feeding clamp assembly 1 and the residual material feeding rack 2. The two ends of the opening and closing telescopic mechanism 12 are respectively hinged to the feeding clamp assembly 1 and the residual material feeding rack 2. A caster wheel 21 is installed at the bottom of the end of the residual material feeding rack 2 furthest from the feeding clamp assembly 1. Both the feeding and the caster move in extension and retraction within the telescopic part of the opening and closing telescopic mechanism 12, simultaneously cooperating with a hinge shaft and rotating relative to each other around the shaft. This allows the feeding mechanism 4 on the residual material feeding rack 2 to be positioned below the clamping mechanism 3 of the feeding clamp assembly 1 for feeding operations. Reference Figures 3-4 As shown, the unloading clamping assembly 1 is equipped with a lifting-driven clamping mechanism 3, which is used to clamp the material bucket 5 and drive it to complete the actions of rotating around the axis, lifting and flipping. The unloading clamping assembly 1 is vertically mounted with two guide rails 11, and the clamping mechanism 3 includes a lifting plate 33 that is slidably mounted on the guide rails 11. A lifting motor 31 is installed at the bottom of the unloading clamping assembly 1, and the output shaft of the lifting motor 31 drives the lifting plate 33 through a chain and sprocket assembly 32, so that the clamping mechanism 3 can complete the above-mentioned lifting operation. Furthermore, a flipping motor 34 is installed on the lifting plate 33, and a rotating shaft 351 driven to rotate by the flipping motor 34 is connected to the lifting plate 33 via a bearing. A clamping seat 35 is installed at the end of the rotating shaft 351 away from the lifting plate 33. The clamping seat 35 is driven to rotate by the flipping motor 34, so that the clamping mechanism 3 completes the above-mentioned flipping and buckling action. Furthermore, a clamping motor 36 and a U-shaped guide plate 352 are respectively installed on the clamping base 35. The output shaft of the clamping motor 36 is sleeved with a drive gear 361 that passes through the middle of the guide plate 352. Sliders 37 are also slidably installed on the upper and lower surfaces of the guide plate 352. The two sliders 37 have tooth grooves on their opposite sides that mesh with the teeth on the surface of the drive gear 361. The opposite outer ends of the two sliders 37 are vertically installed with clamping arms 38. The drive gear 361 of the output shaft of the clamping motor 36 meshes with the tooth grooves of the two sliders 37 respectively. The drive gear 361 of the output shaft of the clamping motor 36 drives the two sets of sliders 37 to drive the upper and lower parts of the guide plate 352 to drive the two sets of clamping arms 38 to open and close to realize the clamping operation. It is worth noting that two guide rollers 382 are connected to the opposite ends of the two clamping arms 38 via bearings. The guide rollers 382 cooperate with the clamping arms 38 to clamp the material bucket 5. Centrifugal motors 381 are also installed on the outer side of the clamping arms 38 to drive the guide rollers 382 on the same side to rotate in the same direction. Driven by the two centrifugal motors 381, the guide rollers 382 installed on the two clamping arms 38 rotate synchronously in the same direction. By making the material bucket 5 rotate at high speed, centrifugal force is generated, thereby throwing the residual paint at the bottom of the material bucket 5 toward the bucket wall. In addition, due to the increase in weight caused by the accumulation of residual paint, this process can also promote the flow of residual paint on the bucket wall toward the bucket end.
[0023] Reference Figures 5-6 As shown, the waste material unloading rack 2 is integrated with a unloading mechanism 4, which includes: The wall scraping actuator includes a feeding disc 41 and a rotating rod 45 axially arranged through the feeding disc 41. The rotating rod 45 is driven to rotate by a scraping motor 44 and is driven to move up and down axially by a telescopic part of a lifting telescopic mechanism 43. Both the scraping motor 44 and the lifting telescopic mechanism 43 are installed at the bottom of the feeding disc 41. A lifting bracket 431 is installed on the telescopic part of the lifting telescopic mechanism 43. The rotating rod 45 is connected to the end of the lifting bracket 431 by a bearing. A rotating ring 432 is connected to the upper end of the lifting bracket 431 by a bearing. The rotating ring 432 is driven to rotate by the output shaft of the scraping motor 44. The rotating ring 432 is sleeved on the outside of the rotating rod 45. A rib is provided on one side of the rotating rod 45, and a rib groove corresponding to the rib is opened on the inner wall of the rotating ring 432. The scraper assembly consists of an openable scraper rod 47 mounted on the top of the rotating rod 45. A scraper blade 471 is hinged to the scraper rod 47 via a spring shaft. The scraper blade 471 can rotate downwards along the hinge point of the scraper rod 47 with the aid of the spring shaft to ensure tight contact with the inner wall of the material container 5. When the scraper blade 471 loses its restraint from the inner wall of the material container 5, the spring shaft resets it, keeping the scraper blade 471 perpendicular to the scraper rod 47, thus facilitating contact with the inner wall of the end of the material container 5. The scraper blade 471 can radially extend and retract during the descent of the rotating rod 45 to dynamically conform to the curved surface of the inner wall of the material container 5. The clamping mechanism 3 flips and inverts the opening of the material container 5, sealing it with the discharge tray 41 to form a centrifugal discharge channel for residual liquid. The scraper blade 471 moves with the rotation of the rotating rod 45. During the process, residual material on the barrel wall is scraped off, and residual liquid is guided to be discharged through the guide pipe 42. The telescopic part of the lifting telescopic machine 43 pushes the lifting bracket 431 to rise and fall below the material tray 41, thereby driving the rotating rod 45 connected to the bearing on the lifting bracket 431 to pass through the material tray 41 and rise and fall on it. While the rotating rod 45 is rising and falling, the output shaft of the scraper motor 44 drives the rotating ring 432 to rotate through the belt. Under the combined action of the ribs and rib grooves, the rotating rod 45 can be driven by the rotating ring 432 to achieve synchronous rotation. The rotation of the rotating rod 45 driven by the rotating ring 432 will not affect its own lifting function. It is used to adjust the scraper 471 at different depths in the material barrel 5, and at the same time, it can push the scraper 471 to rotate, thus completing the scraping operation on the inner wall of the material barrel 5.
[0024] It is worth noting that, referring to Figures 7-8 As shown, an "L"-shaped limiting rod 461 is also installed on one side of the residual material unloading rack 2. The vertical part of the limiting rod 461 is placed below the lifting bracket 431 and is fitted with a sleeve 46. The top of the sleeve 46 is connected to a top rod 462 extending into the inside of the rotating rod 45. A partition 4621 is provided on the outer side of the lower end of the top rod 462, and a return spring 4622 is also fitted on the outer side of the lower end of the top rod 462. The two ends of the return spring 4622 abut against the partition 4621 and the inner wall of the lifting bracket 431, respectively.
[0025] Furthermore, a sleeve rod 472 is sleeved on the outside of the scraper rod 47, and a compression spring 473 is provided inside the sleeve rod 472. The scraper blade 471 is installed at the end of the sleeve rod 472. The compression spring 473 pushes the sleeve rod 472 so that the scraper blade 471 at its end can keep acting on the inner wall of the material bucket 5 and apply a certain force to the inner wall of the material bucket 5 to improve the scraping effect. Furthermore, the end of the scraper 47 away from the sleeve 472 is provided with a toothed ring 474 connected to the end bearing of the rotating rod 45, and the top rod 462 located inside the rotating rod 45 is provided with a toothed plate 463 that meshes with the teeth on the surface of the toothed ring 474. When the end of the rotating rod 45 is lifted to the top by the telescopic part of the lifting telescopic machine 43, the sleeve 46 is pulled upward by the push rod 462 inside the rotating rod 45, causing it to slide to the top on the limiting rod 461. At this time, because the sleeve 46 is restricted by the limiting rod 461, it cannot continue to move upward, resulting in the upward movement of the push rod 462 being restricted by the sleeve 46 when the rotating rod 45 continues to rise. Then, by compressing the return spring 4622 through the partition plate 4621, the relative position of the push rod 462 and the rotating rod 45 slides downward a certain distance, causing the toothed plate 463 at the upper end of the push rod 462 to move downward, driving the toothed rings 474 on both sides that mesh with the toothed rings 474 to move upward synchronously along their bearing connection parts, pushing the scraper blades 471 at the ends of the two scraper rods 47 to move closer to the top. During this process, in conjunction with the drive rotation of the scraper motor 44, the scraping operation on the bottom of the material bucket 5 is realized. Conversely, when the telescopic part of the lifting telescopic machine 43 retracts, the rotating rod 45 moves downward and the sleeve 46 moves downward simultaneously. During this process, since the top rod 462 loses the downward pulling force from the sleeve 46, the return spring 4622 pushes the top rod 462 to move upward relative to the position of the rotating rod 45, so that the toothed plate 463 at the top of the top rod 462 pushes the scraper blades 471 at the ends of the two scraper rods 47 to open backward, so as to realize the scraping operation on the side wall of the material barrel 5.
[0026] exist Figure 8 In the middle, the scraper 47 and the sleeve 472 are sleeved and telescopically connected, and there is a compression spring 473 inside. Therefore, the sleeve 472 can keep the scraper 471 in contact with the bottom and wall of the bucket. At the same time, the scraper 471 is connected to the sleeve 472 through the spring shaft. Therefore, the scraper 471 itself can also be flipped downward along the spring shaft, which can realize the action when in contact with the bottom and wall of the bucket. The spring shaft keeps the scraper 471 in a horizontal position by default, which is convenient for contact with the bottom of the barrel. When the scraper 471 moves to the inner wall of the barrel 5, it is pushed to a vertical position by the force applied by the spring 473 as the barrel 5 rises, which is convenient for contact with the side wall of the barrel. This means that when the scraper blade 471 scrapes the bottom of the bucket, the pressure spring 473 is in a compressed state. During the upward or downward flipping process, the pressure spring 473 is gradually compressed or released by the bucket wall, thereby making up for the space between the bottom of the bucket and the bucket wall during this process, ensuring that the scraper blade 471 can cover the bottom and side walls of the bucket.
[0027] like Figure 9 As shown, during the scraping operation, the telescopic part of the lifting telescopic machine 43 is first retracted, causing the rotating rod 45 to rise to the highest point, at which point the two scraper rods 47 are in a closed state; then, the clamping mechanism 3 is used to fit the material bucket 5 onto the outside of the scraper rod 47; during this process, the sleeve rod 472 and the scraper rod 47 remain in a retracted state, ensuring that the scraper blade 471 at the end of the scraper rod 47 is in close contact with the bottom of the material bucket 5; Subsequently, the telescopic part of the lifting telescopic machine 43 drives the rotating rod 45 to move downward; during the descent of the rotating rod 45, the two scraper rods 47 gradually open, while the sleeve rod 472 continues to extend from the outside of the scraper rods 47, keeping the scraper blade 471 in contact with the bottom of the material bucket 5; when the end of the scraper blade 471 touches the bucket wall, as the rotating rod 45 continues to move downward, the scraper blade 471, under the action of the spring shaft and the friction of the bucket wall, flips in the direction of the arrow at the scraper blade 471 in the figure, so that its other side contacts the bucket wall, and moves towards the bucket opening as the rotating rod 45 descends; in conjunction with the scraper motor 44 driving the rotation of the rotating rod 45, the scraper blade 471 can fully scrape the bottom and the bucket wall of the material bucket 5, completely scraping off the residual material.
[0028] In this embodiment, a scraper 411 is also sleeved on the outside of the rotating rod 45. The scraper 411 abuts against the inner wall of the feeding tray 41. The scraper 411 is sleeved on the outside of the rotating rod 45 and does not rise or fall with the rotating rod 45. The scraper 411 is pushed to rotate inside the feeding tray 41 by the ribs on the outside of the rotating rod 45, which can accelerate the pushing of the residual paint scraped off from the material bucket 5 into the guide pipe 42 for emptying.
[0029] This device achieves automated, efficient, and closed-loop recycling of residual liquid in the material tank 5 through the coordinated operation of the material clamping assembly 1 and the residual material unloading rack 2. The clamping mechanism 3 holds the material tank 5 and drives it to rotate, using centrifugal force to collect the residual liquid on the tank wall to the inverted end of the tank, achieving a sealed connection with the unloading tray 41 on the residual material unloading rack 2. The unloading mechanism 4, through a liftable and rotatable rotating rod 45 and its adaptive scraper assembly at the top, radially closes to fit the bottom of the tank and radially expands to fit the tank wall during the rising to the top and falling processes, respectively, effectively scraping away stubborn residues. At the same time, the scraper motor 44 drives the entire scraper assembly to rotate, thoroughly cleaning the bottom and walls of the tank. The scraped residual liquid, under the combined action of centrifugal force and scraper 411, is discharged through the guide pipe 42, thereby achieving the recycling of residual liquid.
[0030] This invention integrates clamping, flipping, centrifugation, scraping, and recycling functions into one compact structure. Through the coordinated working mode of centrifugal pretreatment and mechanical scraping, the residual liquid is first centrifugally collected by the spinning of the material tank 5, and then most of the liquid is centrifugally thrown out by the inverted feeding tray 41. Finally, the adaptive scraper 471 is used to scrape the tank wall without dead angles, which greatly reduces the residual liquid rate, significantly reduces the waste of raw materials for high-value environmentally friendly coatings, and reduces production costs. This device requires no manual intervention, which not only improves production line efficiency but also avoids direct contact between operators and chemicals and volatile organic compounds, ensuring occupational health and safety. Furthermore, the entire feeding process is carried out in a closed system (the material tank 5 and the feeding tray 41 are sealed together, and residual liquid is discharged through a pipe; the inner wall of the end of the feeding tray 41 is designed with an inclined chamfer to ensure that the opening of the material tank 5 of different sizes can fit tightly with the chamfered part of the feeding tray 41, thereby completing the sealed connection), effectively preventing pollution caused by paint volatilization and achieving clean production. The scraper blade 471 of the device is hinged by a spring shaft and equipped with a pressure spring 473, which can dynamically conform to different barrel diameters and inner wall curves to ensure uniform scraping effect. The scraper rod 47 opening and closing control mechanism (driven by the top rod 462 and the toothed plate 463 to drive the toothed ring 474) realizes the automatic switching between two modes of scraping the barrel wall and cleaning the bottom of the barrel under a single lifting drive, which is highly practical.
[0031] Based on the above embodiments, the opening and closing telescopic machine 12 and the lifting telescopic machine 43 may be equipped with structures such as cylinders, hydraulic cylinders, and motors with lifting rods, and no restrictions are imposed in this embodiment.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A device for discharging residual paint used in the production of environmentally friendly coatings, comprising a discharging clamp assembly (1) and a residual paint discharging rack (2), the two being hinged together by a hinge shaft and capable of rotating relative to each other around the shaft, characterized in that: The material clamping assembly (1) is equipped with a lifting-driven clamping mechanism (3), which is used to clamp the material bucket (5) and drive it to complete the actions of rotating around the axis, lifting and flipping. The waste material unloading rack (2) is equipped with an unloading mechanism (4), which includes: The wall scraping execution assembly includes a feeding disc (41) and a rotating rod (45) axially arranged through the feeding disc (41). The rotating rod (45) is driven to rotate by a scraping motor (44) and is driven to move up and down axially by the telescopic part of the lifting telescopic machine (43). The scraper assembly includes an openable scraper rod (47) mounted on the top of the rotating rod (45), and a scraper blade (471) is hinged to the scraper rod (47) via a spring shaft. The scraper blade (471) can extend and retract radially as the rotating rod (45) descends to dynamically conform to the curved surface of the inner wall of the material bucket (5). The clamping mechanism (3) flips and inverts the bucket (5) and seals the bucket opening with the feeding tray (41) to form a channel for centrifugal discharge of residual liquid; The scraper (471) scrapes off the residue on the barrel wall during the lifting and lowering of the rotating rod (45) and guides the residual liquid to be discharged through the guide pipe (42).
2. The residual coating feeding device for environmentally friendly coating production as described in claim 1, characterized in that, An opening and closing telescopic mechanism (12) is provided between the material feeding clamp assembly (1) and the residual material feeding rack (2). The two ends of the opening and closing telescopic mechanism (12) are respectively hinged to the material feeding clamp assembly (1) and the residual material feeding rack (2). The bottom of the residual material unloading rack (2) away from the unloading clamp assembly (1) is equipped with a caster wheel (21).
3. The residual coating feeding device for environmentally friendly coating production as described in claim 1, characterized in that, The unloading clamping assembly (1) is vertically mounted with two guide rails (11), and the clamping mechanism (3) includes a lifting plate (33) that is slidably mounted on the guide rails (11). The bottom of the material clamping assembly (1) is equipped with a lifting motor (31), and the output shaft of the lifting motor (31) is driven to pull the lifting plate (33) through a chain and sprocket assembly (32).
4. The residual coating feeding device for environmentally friendly coating production as described in claim 3, characterized in that, A tilting motor (34) is installed on the lifting plate (33), and a rotating shaft (351) driven to rotate by the tilting motor (34) is also connected to the lifting plate (33) via a bearing. A clamp (35) is installed at the end of the rotating shaft (351) away from the lifting plate (33). The clamping seat (35) is respectively equipped with a clamping motor (36) and a guide plate (352) with an "U" shape. The output shaft of the clamping motor (36) is sleeved with a drive gear (361) that passes through the middle of the guide plate (352). The upper and lower surfaces of the guide plate (352) are also slidably mounted with slides (37). The two slides (37) are provided with tooth grooves on the opposite side that mesh with the teeth on the surface of the drive gear (361).
5. The residual coating feeding device for environmentally friendly coating production as described in claim 4, characterized in that, Both of the aforementioned carriages (37) have clamping arms (38) vertically mounted on their opposite outer ends; Two guide rollers (382) are connected to the opposite ends of the two clamping arms (38) via bearings. A centrifugal motor (381) for driving the guide rollers (382) on the same side to rotate in the same direction is also installed on the outside of the clamping arms (38).
6. The residual coating feeding device for environmentally friendly coating production as described in claim 1, characterized in that, The scraper motor (44) and the lifting telescopic machine (43) are both installed at the bottom of the unloading tray (41); The telescopic part of the lifting telescopic machine (43) is equipped with a lifting bracket (431), and the rotating rod (45) is connected to the end of the lifting bracket (431) through a bearing.
7. The residual coating feeding device for environmentally friendly coating production as described in claim 6, characterized in that, The upper end bearing of the lifting bracket (431) is connected to a rotating ring (432), which is driven to rotate by the output shaft of the scraper motor (44). The swivel ring (432) is sleeved on the outside of the rotating rod (45). A rib is provided on one side of the rotating rod (45), and a rib groove corresponding to the rib is opened on the inner wall of the swivel ring (432).
8. The residual coating feeding device for environmentally friendly coating production as described in claim 1, characterized in that, The residual material unloading rack (2) is also equipped with an "L"-shaped limiting rod (461) on one side. The vertical part of the limiting rod (461) is placed below the lifting bracket (431) and is fitted with a sleeve (46). The top of the sleeve (46) is connected to a top rod (462) extending into the inside of the rotating rod (45). A partition plate (4621) is provided on the outer side of the lower end of the top rod (462), and a return spring (4622) is also sleeved on the outer side of the lower end of the top rod (462). The two ends of the return spring (4622) abut against the partition plate (4621) and the inner wall of the lifting bracket (431), respectively.
9. The residual coating feeding device for environmentally friendly coating production as described in claim 8, characterized in that, The scraper (47) is fitted with a sleeve (472), and a compression spring (473) is provided inside the sleeve (472). The scraper blade (471) is installed at the end of the sleeve (472). The scraper (47) is provided with a toothed ring (474) connected to the end bearing of the rotating rod (45) at one end away from the sleeve rod (472), and the top rod (462) is provided with a toothed plate (463) that meshes with the teeth on the surface of the toothed ring (474) at one end inside the rotating rod (45).
10. The residual coating feeding device for environmentally friendly coating production as described in claim 1, characterized in that, The rotating rod (45) is also fitted with a scraper (411), which abuts against the inner wall of the feeding tray (41).