Lost foam casting flow coating collecting system and method

Abstract

The lost foam casting flow coating collecting system comprises coating collecting tanks, a scraper system is arranged in each coating collecting tank, the scraper systems in every two adjacent coating collecting tanks move in different directions of the X axis, a coating collecting pool is arranged at the open end of each coating collecting tank, a slurry pump is arranged in each coating collecting pool, and the slurry pumps are arranged in the coating collecting tanks. The scraper system comprises a bottom plate extending in the Y-axis direction and a vertical plate perpendicularly arranged on the bottom plate, the two sides of the vertical plate are rotationally connected with guide wheels through pin shafts, and the guide wheels make contact with the side wall of the coating collecting tank all the time. A rubber strip is arranged on the side, facing the open end of the coating collecting tank, of the bottom of the bottom plate. A walking device is arranged on the side, away from the open end of the coating collecting tank, of the bottom of the bottom plate. The invention effectively solves the difficulty of long-term paint cleaning by staff, reduces the labor intensity and the workload, and shortens the production takt of the paint flow coating process, which is an important technical problem faced by the casting industry for a long time.

Description

Technical Field

[0001] The present invention belongs to the technical field of full-mold casting flow coating equipment, and specifically discloses a system and method for mechanized collection and recycling of flow coating materials. Background Art

[0002] As an advanced casting process, the lost foam casting technology plays an important role in modern casting production. In its process flow, the flow coating process is one of the key links. Mainly, two layers of refractory coatings are flow-coated outside the polystyrene foam plastic model, and then the parting surface of the casting is formed through subsequent processes of molding, and finally the casting blank is formed through pouring.

[0003] In the mechanized production of the flow coating process, the industry generally uses a flow coating diaphragm pump to spray the coating on the surface of the polystyrene foam plastic. This process is usually designed to be carried out in a room-shaped structure. The coating is sprayed onto the model surface through the diaphragm pump, and the excess coating gradually drips into the flow coating pool by the principle of gravity. However, due to the high viscosity and self-solidification characteristics of the refractory coating, it is easy to form lumps on the surface of the equipment and the bottom of the pool, which brings significant challenges to production.

[0004] Currently, the treatment method for excess coating in the industry is still relatively primitive. Usually, 1-2 workers are arranged to intermittently collect the dripping coating manually with special tools. This manual collection method has many problems: First, if the coating is not collected in time, it will lead to serious waste of high-cost coating; second, once the coating solidifies into lumps, the later cleaning work will become extremely difficult; in addition, manual coating collection is required after each model spraying (about 20 minutes). This process does not generate direct value but occupies valuable production time; finally, workers need to bend down frequently for a long time, with high labor intensity and heavy work load, which is not conducive to the health of employees and production efficiency.

[0005] Therefore, designing and implementing a mechanized coating collection system device to effectively solve the long-term difficulty of employees in cleaning the coating, reduce the labor intensity and work load, and at the same time shorten the production beat of the coating flow coating process is an important technical problem that the casting industry has faced for a long time. Summary of the Invention

[0006] The present invention discloses a lost foam casting flow coating collection system and method, which effectively solves the long-term difficulty of employees in cleaning the coating, reduces the labor intensity and work load, and at the same time shortens the production beat of the coating flow coating process, which is an important technical problem that the casting industry has faced for a long time. Solving this problem is of great significance for improving production efficiency, reducing production costs, improving the working environment, and promoting the sustainable development of the casting industry.

[0007] The present invention discloses a lost foam casting flow coating collection system, which includes 2N coating collection tanks arranged in an array along the Y-axis direction, where N≥1. Each coating collection tank includes an open end. A scraper system that can displace along the X-axis direction is arranged in each coating collection tank. The scraper systems in two adjacent coating collection tanks are driven by a power system to move in different directions along the X-axis. An open end of the coating collection tank is provided with a coating collection pool that can displace along the Y-axis direction. A slurry pump is arranged in the coating collection pool. The scraper system includes a bottom plate extending along the Y-axis direction and a vertical plate vertically arranged on the bottom plate. Guide wheels are rotatably connected to both sides of the vertical plate through pin shafts, and the guide wheels are always in contact with the side wall of the coating collection tank. A rubber strip is arranged on one side of the bottom of the bottom plate facing the open end of the coating collection tank; a traveling wheel is arranged on one side of the bottom of the bottom plate facing away from the open end of the coating collection tank. When the scraper system moves towards the open end of the coating collection tank, the rubber strip is in contact with the bottom surface of the coating collection tank. When the scraper system moves away from the open end of the coating collection tank, the rubber strip is not in contact with the bottom surface of the coating collection tank.

[0008] In a preferred embodiment of the present invention, the power system includes a winch, a fixed pulley, and a steel wire rope. Two fixed pulleys are correspondingly arranged at each coating collection tank, and two adjacent scraper systems are connected by the steel wire rope passing around the fixed pulley.

[0009] In a preferred embodiment of the present invention, the fixed pulleys in two adjacent coating collection tanks are arranged in a mirror-symmetrical manner.

[0010] In a preferred embodiment of the present invention, the two fixed pulleys corresponding to each two coating collection tanks are arranged at intervals on the X-axis symmetry central axis of the coating collection tank.

[0011] In a preferred embodiment of the present invention, the coating collection pool displaces along the Y-axis direction under the action of a coating conveying system.

[0012] In a preferred embodiment of the present invention, the coating conveying system includes a conveyor extending along the Y-axis direction and a coating collection pool connected to the displacement end of the conveyor.

[0013] In a preferred embodiment of the present invention, guide rails extending along the X-axis direction are arranged on the side walls of each coating collection tank, and the guide wheels are matched with the guide rails.

[0014] In a preferred embodiment of the present invention, a photoelectric switch is included in each coating collection tank.

[0015] In a preferred embodiment of the present invention, there are at most N coating collection pools.

[0016] The invention discloses a method for using a flow coating collection system for lost foam casting, which is characterized by: S1, coating flows into a coating collection tank, and a scraper system is started; the scrapers in two collection tanks move toward each other, and the rubber strip of the scraper system in one coating collection tank drags the coating in the collection tank to collect the coating in the single collection tank, while the scraper system in the other coating collection tank is constrained by the tension of a steel wire rope and the gravity of the scraper, and automatically flips up to separate the rubber strip from the ground tank by a preset height distance, thereby realizing the return of the scraper system; S2, after the scraper system is in place, a photoelectric switch is used to automatically return, and the scraper automatically recycles the coating; S3, the coating collected in the coating collection pool is automatically flow-coated to the coating collection pool of the coating recycling system through the conveyor; S4, the coating passes through a slurry pump and is automatically transported to the height of spraying the coating through a pipeline system, thereby realizing automatic spraying of the coating on the model and entering the next working cycle.

[0017] The beneficial effects of the present invention are as follows: the present invention provides a lost foam casting flow coating collection system, which has significant technical advantages and practical value. The system realizes efficient automatic collection and recycling of coatings by combining multiple coating collection tanks arranged in an array along the Y axis with an intelligent scraper system, fundamentally solving many drawbacks of traditional manual collection methods.

[0018] First, the scraper system designed in the present invention has an ingenious automatic flipping mechanism. When the scraper moves toward the open end, the rubber strip contacts the bottom of the groove to effectively scrape the paint; when it moves in the opposite direction, it automatically flips up to avoid disturbing the collected paint. This reciprocating motion mechanism ensures the continuity and efficiency of paint collection and significantly reduces paint waste.

[0019] Secondly, the present invention adopts a power system consisting of a winch, a fixed pulley and a steel wire rope. Adjacent scrapers are connected by steel wire ropes to achieve opposite movement. The structure is simple, stable and reliable. With the automatic control of the photoelectric switch, the system can achieve full automatic operation without manual intervention, greatly improving production efficiency.

[0020] Thirdly, the present invention establishes a complete paint recycling process through the design of the paint delivery system and the paint collection pool. The collected paint can be directly sent to the recycling system through the conveyor, and transported to the spraying position by the slurry pump for the next round of working cycle, forming a closed-loop process.

[0021] Most importantly, the present invention fundamentally solves a series of problems caused by manual collection of coatings in the traditional lost foam casting process: it completely eliminates the high-load labor of workers who frequently bend over to operate, significantly improves the working environment and working conditions; it avoids the trouble of coatings agglomerating and being difficult to clean after long-term accumulation; at the same time, due to the high degree of automation, it greatly shortens the production cycle and improves the overall production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the technical solutions of the disclosed embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. These drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention.

[0023] Figure 1 is the front view of the present invention;

[0024] Figure 2 is the side view of the present invention;

[0025] Figure 3 is the top view of the present invention;

[0026] Figure 4 is the schematic diagram of the present invention;

[0027] Figure 5 is the schematic diagram of the scraper system of the present invention;

[0028] Figure 6 is the front view of the scraper system of the present invention;

[0029] Figure 7 is the top view of the scraper system of the present invention;

[0030] Figure 8 is the side view of the scraper system of the present invention;

[0031] Figure 9 is the working principle diagram of the scraper system of the present invention;

[0032] Figure 10 is the schematic diagram of the paint collection tank of the present invention;

[0033] Figure 11 is the schematic diagram of the paint circulation system of the present invention;

[0034] In the figure: 1 - paint storage system; 2 - paint collection tank; 3 - paint conveying system; 4 - cover plate; 5 - paint recirculation system, 6 - vertical plate, 7 - bottom plate; 8 - guide wheel; 9 - traveling wheel; 10 - angle steel; 11 - stainless steel collection tank; 12 - square pipe; 3 - slurry pump; 14 - collection pond. Detailed implementation manners

[0035] The technical solutions (including preferred technical solutions) of the present invention will be further described in detail below by way of the accompanying drawings and by listing some optional embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0036] The present invention discloses a lost foam casting flow coating collection system. As shown in the figure, the lost foam casting flow coating collection system provided by the present invention comprises 2N coating collection slots 2 (N≥1) arranged in an array along the Y-axis direction. A cover plate 4 is provided on each coating collection slot 2, and each coating collection slot 2 comprises an open end. A scraper system displaceable along the X-axis direction is provided in each coating collection slot 2, and the scraper systems in two adjacent coating collection slots 2 are driven by a power system to move in different directions along the X-axis. A coating collection pool 14 displaceable along the Y-axis direction is provided at the open end of the coating collection slot 2, and a slurry pump 13 is provided in the coating collection pool 14 for conveying the collected coating to the spraying system.

[0037] The scraper system of the present invention is the core component of the present invention, which includes a bottom plate 7 extending along the Y axis and a vertical plate 6 vertically arranged on the bottom plate 7. The two sides of the vertical plate 6 are rotatably connected with guide wheels 8 through pins, and the guide wheels 8 and the side walls of the paint collection tank 2 are always in contact to ensure the stability of the scraper system during movement. The bottom of the bottom plate 7 is provided with a rubber strip on the side facing the open end of the paint collection tank 2; the bottom of the bottom plate 7 is provided with a walking wheel 9 on the side away from the open end of the paint collection tank 2.

[0038] The design of the scraper system has a special self-flipping function: when the scraper system moves toward the open end of the paint collecting tank 2, the rubber strip contacts the bottom surface of the paint collecting tank 2, and can effectively scrape the paint; when the scraper system moves away from the open end of the paint collecting tank 2, the rubber strip does not contact the bottom surface of the paint collecting tank 2, and the scraper can return without interfering with the collected paint.

[0039] The scraper system consists of a bottom plate (stainless steel), a vertical plate (stainless steel), a guide wheel 8, a travel wheel 9, and a wear-resistant rubber strip, the size of which corresponds to the size gap of the collection tank to ensure stability and collection efficiency during operation.

[0040] The power system of the present invention includes a winch, a fixed pulley and a steel wire rope. Two fixed pulleys are correspondingly arranged at each paint collecting tank 2, and two adjacent scraper systems are connected by passing the steel wire rope around the fixed pulley. The fixed pulleys in two adjacent paint collecting tanks 2 are arranged in mirror symmetry, and the two fixed pulleys corresponding to each two paint collecting tanks 2 are arranged at intervals on the X-axis symmetrical central axis of the paint collecting tank 2.

[0041] The power system of the scraper adopts a traveling mechanism, which is composed of a driving winch, a fixed pulley, a scraper traveling guide groove, a wire rope, and a scraper. The size of the wire rope corresponds to the center aperture of the scraper with an appropriate gap to ensure the flexibility of the system operation.

[0042] The stainless steel collecting trough of the present invention is mainly formed by bending 4 stainless steel pools, and square steel and angle steel supports are arranged at the bottom to enhance the structural strength; the inner hole size of the side opening corresponds to the diameter of the steel wire rope with an appropriate gap to ensure the smooth passage of the steel wire rope.

[0043] A guide rail extending along the X-axis direction is arranged on the side wall of each paint collecting tank 2, and the guide wheel 8 cooperates with the guide rail to ensure the stability and accuracy of the scraper system during movement.

[0044] A photoelectric switch is also provided in each paint collecting tank 2 for detecting the position of the scraper system and controlling its automatic return.

[0045] The paint collection pool 14 of the present invention is displaced along the Y axis under the action of the paint delivery system 3. The paint delivery system 3 includes a conveyor extending along the Y axis and a paint collection pool 14 connected to the displacement end of the conveyor. The system includes at most N paint collection pools 14.

[0046] The paint delivery system is mainly composed of 2 sets of stirring cage conveyors, and a paint self-recovery device is installed at the head; its delivery power size matches the paint recovery amount to ensure the efficient operation of the system.

[0047] The paint recycling system is mainly composed of a slurry pump 13 and a piping system, with a flow coating collection pool at the bottom; the inner hole size of the side opening corresponds to the output aperture of the paint storage and stirring system; its recycling capacity is proportional to the single recovery amount of paint to ensure the balanced operation of the system.

[0048] The method for using the lost foam casting flow coating collection system of the present invention comprises the following steps:

[0049] S1, the paint flows into the paint collection tank 2, and the scraper system is started; the scrapers in the two collection tanks move towards each other, and the rubber strip of the scraper system in one paint collection tank 2 drags the paint in the collection tank to collect it in a single collection tank, while the scraper system in the other paint collection tank 2 is constrained by the tension of the wire rope and the gravity of the scraper, and automatically flips up to separate the rubber strip from the ground trough by a preset height distance (about 30mm), so as to realize the return of the scraper system. The working principle of this flap self-reset mechanism is: during the working process, the paint is recovered by the dragging effect of the scraper, and when returning, the scraper is automatically flipped up by the weight of the scraper, and the scraper is separated from the ground trough by an appropriate height distance.

[0050] S2, after the scraper system is in place, it uses the photoelectric switch to automatically return, and the scraper automatically recycles the paint.

[0051] S3, the paint collected in the paint collection tank 14 is conveyed by a conveyor and the paint is automatically flowed into the paint collection tank of the paint recycling system.

[0052] In S4, the coating passes through the slurry pump 13 and is automatically transported to the height for spraying the coating through the pipeline system, realizing the automatic spraying of the coating on the model, and entering the next working cycle.

[0053] The control principle of the lost foam casting flow coating collection system designed by the present invention is simple, and can realize the mechanized collection of the coating. The loss of the coating is reduced through the coating circulation system. At the same time, the automatic collection of the coating is realized through the scraper and the power system, effectively reducing the difficulty of personnel in cleaning and collecting the coating, improving the production rhythm, and reducing the labor load of the workers.

[0054] This system is composed of 4 sets of scraper and power systems, stainless steel collection tanks, coating conveying systems, and coating recycling systems. It has a reasonable structure and perfect functions, and can meet the requirements of coating collection and recycling in modern lost foam casting production.

[0055] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, combinations, substitutions, improvements, etc. made under the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A lost foam casting flow coating collection system, characterized in that: The invention comprises 2N paint collecting grooves (2) arranged in an array along the Y axis, N≥1, each paint collecting groove (2) comprises an open end, each paint collecting groove (2) is provided with a scraper system that can be displaced along the X axis, the scraper systems in two adjacent paint collecting grooves (2) are driven by a power system to move in different directions along the X axis, the open end of the paint collecting groove (2) is provided with a paint collecting pool (14) that can be displaced along the Y axis, a slurry pump (13) is provided in the paint collecting pool (14), the scraper system comprises a bottom plate (7) extending along the Y axis and a slurry pump (13) vertically arranged on the bottom plate (7). A vertical plate (6), the two sides of the vertical plate (6) are rotatably connected with guide wheels (8) through pins, the guide wheels (8) are always in contact with the side walls of the paint collecting tank, and the bottom of the bottom plate (7) is provided with a rubber strip on the side facing the open end of the paint collecting tank; the bottom of the bottom plate (7) is provided with a walking wheel (9) on the side facing away from the open end of the paint collecting tank, when the scraper system moves toward the open end of the paint collecting tank, the rubber strip contacts the bottom surface of the paint collecting tank, and when the scraper system moves away from the open end of the paint collecting tank, the rubber strip does not contact the bottom surface of the paint collecting tank.

2. The lost foam casting flow coating collection system according to claim 1, characterized in that: The power system comprises a winch, a fixed pulley and a steel wire rope, two fixed pulleys are correspondingly arranged at each paint collecting tank (2), and two adjacent scraper systems are connected by the steel wire rope passing around the fixed pulleys.

3. The lost foam casting flow coating collection system according to claim 2, wherein: The fixed pulleys in two adjacent paint collecting grooves (2) are arranged in a mirror-symmetrical manner.

4. The lost foam casting flow coating collection system according to claim 3, characterized in that: The two fixed pulleys corresponding to each of the two paint collecting grooves (2) are arranged at intervals on the X-axis symmetrical central axis of the paint collecting groove (2).

5. The lost foam casting flow coating collection system according to claim 1, characterized in that: The paint collection pool (14) is displaced along the Y-axis under the action of the paint delivery system (3).

6. The lost foam casting flow coating collection system according to claim 3, characterized in that: The paint conveying system (3) comprises a conveyor extending along the Y-axis direction and a paint collecting pool (14) connected to the displacement end of the conveyor.

7. The lost foam casting flow coating collection system according to claim 1, characterized in that: A guide rail extending along the X-axis direction is arranged on the side wall of each paint collecting groove (2), and the guide wheel (8) cooperates with the guide rail.

8. The lost foam casting flow coating collection system according to claim 1, characterized in that: Each paint collecting tank (2) is provided with a photoelectric switch.

9. The lost foam casting flow coating collection system according to claim 1, characterized in that: It includes at most N coating collection tanks (14).

10. A method for using the lost foam casting flow coating collection system according to any one of claims 1-9, characterized in that: S1, the paint flows into the paint collection tank (2), and the scraper system is started; the scrapers in the two collection tanks move towards each other, and the rubber strip of the scraper system in one of the paint collection tanks (2) drags the paint in the collection tank to collect it in the single collection tank, while the scraper system in the other paint collection tank (2) is constrained by the tension of the wire rope and the gravity of the scraper, and automatically flips up to make the rubber strip and the ground tank separate from the preset height distance, so as to realize the return of the scraper system; S2, after the scraper system is in place, it automatically returns using the photoelectric switch, and the scraper automatically recycles the paint; S3, the paint collected in the paint collection pool (14) is automatically flowed into the paint collection pool of the paint recycling system through the conveyor; S4, the paint is automatically transported to the height of the paint spraying through the slurry pump and the pipeline system, so as to realize the automatic spraying of the paint on the model and enter the next working cycle.

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