A continuous drying device for lost foam coating

Abstract

The application discloses a kind of continuous drying device for lost foam coating, including base, the top of the base is respectively equipped with drying chamber and drying bin, the top of the drying chamber is equipped with displacement drying mechanism, the top of the displacement drying mechanism is equipped with air guide drying mechanism, one side of the drying chamber is equipped with sealing cooperation lift plate, the top of the drying chamber one side is equipped with suction fan, and the output of suction fan is equipped with suction port, and the top of suction fan is communicated with air guide pipe;The application is alternately used by setting two groups of support platform and rack, it is convenient to place and dry processing to multiple lost foam coating patterns in succession, so that pattern is fully heated and dried in air guide drying mechanism and displacement drying mechanism, promote the drying efficiency of batch drying pattern, discard the longer waiting time required by existing coating pattern drying, realize the continuous drying function of multiple patterns.

Description

Technical Field

[0001] The invention relates to the technical field of drying devices, in particular to a continuous drying device for lost foam coatings. Background Art

[0002] Lost foam casting is a new casting method that uses dry sand without adhesive and vacuum technology to cast foam plastic molds. It is a new casting method that combines foam models with similar size and shape to the casting into a model cluster, brushes refractory coating and dries it, then buries it in dry quartz sand and vibrates it to shape it. Pouring under negative pressure causes the model to vaporize, and liquid metal occupies the position of the model. After solidification and cooling, the casting is formed. After the lost foam model coating is completed, the coating needs to be placed in the sun to dry to a certain degree, and then placed in a drying oven for final drying to improve drying efficiency.

[0003] Authorized patent number CN218691225U discloses a device for rapid drying of lost foam coatings. The device mainly uses a second dryer to dry all lost foam patterns in a box as a whole. Then, an electric telescopic rod drives the first dryer to move up and down to evenly dry each lost foam pattern, avoiding uneven drying of the lost foam patterns and excessive humidity differences between each pattern, thereby improving the drying effect. At the same time, a humidity sensor detects the humidity of the lost foam patterns being dried in real time. When the humidity reaches the standard, power is supplied to an alarm, which sounds an alarm so that the staff can remove the lost foam patterns in time after hearing it, avoiding excessive drying of the lost foam patterns and affecting product quality. However, when the device is actually used, the following defects still exist:

[0004] The above patent mainly uses the up and down movement of the first dryer to evenly dry each lost foam pattern. However, when the lost foam patterns are dried continuously, in order to save working time, multiple patterns are generally placed on a placement rack for drying. However, when multiple patterns are dried simultaneously, a long waiting time is often required, and the placement rack can only be disassembled and assembled after the previous batch of patterns has been dried to achieve batch drying of the patterns. This makes the drying process of the lost foam coating relatively limited, the waiting time is too long, and it is difficult to perform continuous drying operations. Summary of the Invention

[0005] The object of the present invention is to provide a continuous drying device for lost foam coatings to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a continuous drying device for lost foam coating, comprising a base, a drying chamber and a drying bin respectively mounted on the top of the base, a displacement drying mechanism provided on the top of the drying chamber, an air guide drying mechanism provided on the top of the displacement drying mechanism, a sealing lifting plate provided on one side of the drying chamber, a suction fan provided on the top of one side of the drying chamber, and an air outlet provided at the output end of the suction fan, an air guide pipe connected to the top of the suction fan, and a fan connected to each other provided on the bottom of one side of the drying bin;

[0007] Two groups of servo motors are provided on one side of the base, and the output ends of the two groups of servo motors extend to the interior of the base and are provided with transmission screws. The outer sides of the two groups of transmission screws are provided with internal thread blocks with thread adaptation. Support platforms are installed on the tops of the two groups of internal thread blocks, and a positioning piece is provided at the middle position of the top of the support platform. A placement rack is provided on the top of the two groups of support platforms, and the outer sides of the placement racks are evenly arranged with lost foam patterns.

[0008] Preferably, the displacement drying mechanism includes a mounting groove, a first driver, a semi-arc heating plate, a first gear, a second gear, a conduit, a moving block, a spring, a guide rod and an elliptical wheel. A mounting groove is provided on the top of the interior of the drying chamber, and a conduit is provided at the middle position of the top of the interior of the mounting groove. The conduit extends out of the drying chamber and is provided with a first gear. A fixed groove is installed on the top of the drying chamber, and a first driver is provided on the top of the fixed groove. The output end of the first driver is provided with a second gear that meshes with the first gear. An elliptical wheel is installed on the outside of the conduit, and guide rods are installed on the bottom of both sides of the interior of the mounting groove, and moving blocks and springs elastically connected to the moving blocks are respectively provided on the outside of the guide rods. The bottoms of the two groups of moving blocks are provided with semi-arc heating plates.

[0009] Preferably, the air-guiding drying mechanism includes an annular guide groove, a second driver, a third gear, a hot air blower, an air guide cylinder, a fourth gear, an exhaust hood and a diversion pipe, respectively. The hot air blower and the second driver are respectively installed on the top of the drying bin, an annular guide groove is provided at the edge of the top of the drying bin, and an annular plate is provided at the bottom of the annular guide groove, an air guide cylinder is sleeved on the top of the drying bin, and the air guide cylinder and the annular plate are connected to each other, the output end of the hot air blower is provided with an air guide port extending to the inside of the air guide cylinder, the output end of the second driver is provided with a third gear, the outside of the air guide cylinder is provided with a fourth gear meshing with the third gear, the bottom of the air guide cylinder is connected to the exhaust hood, and the bottoms of both sides of the air guide cylinder are connected to the diversion pipe.

[0010] Preferably, the positioning parts are composed of a combination of conical blocks and conical holes, the tops of the two groups of support platforms are installed with conical blocks, and the bottoms of the two groups of placement racks are provided with conical holes that match the conical blocks, so as to facilitate the use of the snap-fit ​​structure to achieve rapid splicing of the placement racks.

[0011] Preferably, two sets of guide rails are provided at the bottom of the base, and guide blocks interconnected with the internal thread blocks are provided on the outer sides of the guide rails, thereby increasing the guiding and limiting effect of the horizontal movement of the internal thread blocks.

[0012] Preferably, an air guide port is provided at the bottom of one side of the air guide pipe, and the air guide port extends to the inner side of the conduit, so as to form an air return structure, promote the circulation of hot gas and avoid rapid loss.

[0013] Preferably, the bottom of the two groups of diversion pipes are provided with exhaust heads, and exhaust holes are provided on the side where the exhaust heads are close to each other, and the two groups of exhaust holes are arranged horizontally, and the exhaust hood is arranged vertically, which is convenient for utilizing the setting of the diversion structure to improve the drying efficiency of the pattern.

[0014] The present invention provides a continuous drying device for lost foam coatings, which has at least the following beneficial effects:

[0015] 1. By setting up two sets of alternately used support tables and placement racks, it is convenient to continuously place and dry multiple lost foam coating patterns, so that the patterns can be fully heated and dried in the air-conducting drying mechanism and the displacement drying mechanism, thereby promoting the drying efficiency of batch drying patterns and eliminating the long waiting time required for the existing coating pattern drying. The continuous drying function of multiple patterns is realized, and the placement rack can be easily moved out of the device as a whole after drying, so that the operator can disassemble and transport the lost foam patterns, thereby improving the working efficiency of the continuous drying of lost foam coatings.

[0016] 2. The centrifugal rotating drying structure inside the air-guiding drying mechanism is used to promote the hot gas to form three groups of guide channels, fully covering the surface of the pattern on the placement rack, greatly improving the processing efficiency of pattern preheating and drying. As the fan pulls the hot gas sideways, the pattern entering the drying chamber maintains a high-quality drying space under the conduction of hot gas on the two groups of semi-arc heating plates that move back and forth, further improving the accuracy and efficiency of pattern drying. In addition, the circulating air-guiding structure composed of the exhaust port, the suction fan and the air-guiding pipe can effectively avoid the loss of hot gas, reduce the energy consumption required for drying the device, and increase the energy-saving effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 It is a front cross-sectional view of the present invention;

[0019] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at A;

[0020] Figure 4 It is a top view of the support platform of the present invention.

[0021] In the figure: 1. base; 2. drying chamber; 3. displacement drying mechanism; 301. mounting groove; 302. first driver; 303. semi-arc heating plate; 304. first gear; 305. second gear; 306. guide tube; 307. moving block; 308. spring; 309. guide rod; 3010. elliptical wheel; 4. air-guiding drying mechanism; 401. annular guide groove; 402. second driver; 403. third gear; 404. hot air blower; 405. air guide cylinder; 406. fourth gear; 407. exhaust hood; 408. diverter pipe; 5. drying chamber; 6. servo motor; 7. transmission screw; 8. internal thread block; 9. support platform; 10. positioning member; 11. placement rack; 12. lost foam pattern; 13. lifting plate; 14. air extraction port; 15. suction fan; 16. air guide pipe; 17. fan DETAILED DESCRIPTION

[0022] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] See also Figure 1-4 The present invention provides an embodiment of a continuous drying device for lost foam coating, comprising a base 1, a drying chamber 2 and a drying bin 5 respectively mounted on the top of the base 1, a displacement drying mechanism 3 being provided on the top of the drying chamber 2, an air guide drying mechanism 4 being provided on the top of the displacement drying mechanism 3, a sealing lifting plate 13 being provided on one side of the drying chamber 2, a suction fan 15 being provided on the top of one side of the drying chamber 2, and an air outlet 14 being provided on the output end of the suction fan 15, an air guide pipe 16 being connected to the top of the suction fan 15, and a fan 17 being provided on the bottom of one side of the drying bin 5, which are connected to each other;

[0024] Two groups of servo motors 6 are provided on one side of the base 1. The output ends of the two groups of servo motors 6 extend to the interior of the base 1 and are provided with transmission screws 7. The outer sides of the two groups of transmission screws 7 are provided with internal thread blocks 8 with threaded adaptation. The bottom of the base 1 is provided with two groups of guide rails, and the outer sides of the guide rails are provided with guide blocks interconnected with the internal thread blocks 8 to increase the guiding and limiting effects of the horizontal movement of the internal thread blocks 8. A support platform 9 is installed on the top of the two groups of internal thread blocks 8, and a positioning member 10 is provided at the middle position of the top of the support platform 9. A placement rack 11 is provided on the top of the two groups of support platforms 9, and a lost foam pattern 12 is evenly arranged on the outer side of the placement rack 11.

[0025] The displacement drying mechanism 3 includes a mounting groove 301, a first driver 302, a semi-arc heating plate 303, a first gear 304, a second gear 305, a guide tube 306, a moving block 307, a spring 308, a guide rod 309 and an elliptical wheel 3010. The top of the drying chamber 2 is provided with a mounting groove 301, and a guide tube 306 is sleeved at the middle position of the top of the mounting groove 301. The guide tube 306 extends out of the drying chamber 2 and is provided with a first gear 304. The top of the drying chamber 2 is provided with a fixed groove, and the top of the fixed groove is provided with a first driver 302. The first driver The output end of the device 302 is provided with a second gear 305 that meshes with the first gear 304. An elliptical wheel 3010 is installed on the outside of the conduit 306. Guide rods 309 are installed at the bottom of both sides of the inside of the mounting groove 301, and the outsides of the guide rods 309 are respectively provided with moving blocks 307 and springs 308 elastically connected to the moving blocks 307. The bottoms of the two groups of moving blocks 307 are provided with semi-arc heating plates 303. An air guide port is provided at the bottom of one side of the air guide tube 16, and the air guide port extends to the inside of the conduit 306 to guide the air reflux structure, thereby promoting the circulation of hot gas and avoiding rapid loss.

[0026] The air-guiding drying mechanism 4 includes an annular guide groove 401, a second driver 402, a third gear 403, a hot air blower 404, an air guide cylinder 405, a fourth gear 406, an exhaust hood 407 and a diversion pipe 408. The hot air blower 404 and the second driver 402 are respectively installed on the top of the drying chamber 5. An annular guide groove 401 is provided at the edge of the top of the drying chamber 5, and an annular plate is provided at the bottom of the annular guide groove 401. An air guide cylinder 405 is sleeved on the top of the drying chamber 5, and the air guide cylinder 405 and the annular plate are connected to each other. The output end of the hot air blower 404 is provided with an air guide port extending to the inside of the air guide cylinder 405, the output end of the second driver 402 is provided with a third gear 403, and the outer side of the air guide cylinder 405 is provided with a fourth gear 406 that meshes with the third gear 403. The bottom of the air guide cylinder 405 is connected to the exhaust hood 407, and the bottoms of both sides of the air guide cylinder 405 are connected to the diversion pipe 408.

[0027] Example 1, as Figure 1-3As shown, the positioning members 10 are respectively composed of a conical block and a conical hole. The tops of the two groups of support platforms 9 are equipped with conical blocks, and the bottoms of the two groups of placement racks 11 are provided with conical holes that match the conical blocks. Through the engagement structure of the conical block provided on the top of the support platform 9 and the conical hole provided below the placement rack 11, the placement rack 11 is easy to disassemble and separate, so as to carry out the transportation work of the lost foam pattern 12 before and after drying, thereby increasing the convenience of device operation.

[0028] Example 2, as Figure 1-3 As shown, exhaust heads are provided at the bottom of the two groups of manifolds 408, and exhaust holes are provided on the side where the exhaust heads are close to each other, and the two groups of exhaust holes are arranged horizontally, and the exhaust hood 407 is arranged vertically. By utilizing two groups of horizontal hot gas supply and vertical hot gas coverage, and coordinating with the rotation of the centrifugal structure, heat is evenly covered on the surface of the lost foam pattern 12, thereby improving the drying efficiency of the structure for the lost foam coating pattern.

[0029] Working principle: It is used in the continuous drying device of lost foam coating;

[0030] When it is necessary to perform a continuous drying operation on the lost foam coating pattern, the pattern can be placed on the surface of the placement rack 11, and then the placement rack 11 is placed inside the drying chamber 5 and placed in the positioning structure of the positioning piece 10 on the top surface of one group of support platforms 9. At this time, the second driver 402 can be started to drive the third gear 403 to rotate and engage with the fourth gear 406 structure, so that the fourth gear 406 drives the air guide cylinder 405 and the two groups of manifolds 408 to rotate, and then the hot air blower 404 is started to supply hot gas, which is prompted to enter the air guide cylinder 405 and the two groups of manifolds 408 for diversion and guidance, thereby forming three groups of air guide surfaces, and cooperate with the centrifugal rotation of the air guide cylinder 405 and the two groups of manifolds 408 to allow the hot air to evenly cover the coating pattern on the surface of the placement rack 11, thereby performing a preheating and drying process on the pattern;

[0031] After the preheating treatment of the pattern, the transmission screw 7 is driven to rotate by starting a group of servo motors 6, so that the internal thread block 8 is horizontally displaced under the rotation of the transmission screw 7, so that the internal thread block 8 drives the placement rack 11 to move into the drying chamber 2. During this period, the hot gas inside the drying bin 5 can be introduced into the drying chamber 2 by starting the fan 17, and the second gear 305 is driven to rotate by the start of the first driver 302, so that the second gear 305 drives the first gear 304 to engage with the structure, so that the conduit 306 drives the elliptical wheel 3010 to rotate synchronously. At this time, the elliptical wheel 3010 can be intermittently squeezed and contacted with the two groups of moving blocks 307, so that the moving block 307 is horizontally displaced under the guidance of the guide rod 309, and elastically expands and contracts under the elastic squeezing of the spring 308, so that the two groups of moving blocks 307 that are moving back and forth drive the semi-arc heating plate 303 in the started state to perform secondary drying on the horizontally moving placement rack 11, so that The mixture of the semi-arc heating plate 303 and the hot gas allows the interior of the drying chamber 2 to maintain a high-quality drying space, further promoting the accuracy and efficiency of drying the paint pattern. At the same time, when the suction fan 15 is started, part of the heat can be actively absorbed through the exhaust port 14 and introduced into the duct 306 from the air duct 16 to flow back into the drying chamber 2, avoiding excessive heat loss after the lifting plate 13 is opened, thereby increasing the energy-saving efficiency of the device. When one group of placement racks 11 enters the drying chamber 2, the operator can splice another group of placement racks 11 with the support table 9 to prompt another group of batch-dried patterns to be preheated in the drying bin 5 to form a continuous drying structure. The alternating use of the two groups of mobile structures allows the batch-dried patterns to be dried more efficiently, eliminating excessive waiting time. After the paint pattern is dried, it can be moved out of the drying chamber 2 so that the operator can contact the splicing for transportation.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0033] In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms connected and connected should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A continuous drying device for lost foam coating, comprising a base (1), characterized in that: A drying chamber (2) and a drying bin (5) are respectively installed on the top of the base (1), a displacement drying mechanism (3) is provided on the top of the drying chamber (2), an air guide drying mechanism (4) is provided on the top of the displacement drying mechanism (3), a sealing lifting plate (13) is provided on one side of the drying chamber (2), a suction fan (15) is provided on the top of one side of the drying chamber (2), and an air outlet (14) is provided at the output end of the suction fan (15), the top of the suction fan (15) is connected to an air guide pipe (16), and a fan (17) is provided on the bottom of one side of the drying bin (5) that is connected to each other. Two groups of servo motors (6) are provided on one side of the base (1), and the output ends of the two groups of servo motors (6) extend to the interior of the base (1) and are provided with transmission screws (7), and the outer sides of the two groups of transmission screws (7) are provided with internal thread blocks (8) with thread adaptation, and the tops of the two groups of internal thread blocks (8) are installed with support tables (9), and the middle position of the top of the support tables (9) is provided with positioning members (10), and the tops of the two groups of support tables (9) are provided with placement racks (11), and the outer sides of the placement racks (11) are evenly arranged with lost foam patterns (12); the displacement drying mechanism (3) is divided into The drying chamber (2) comprises a mounting groove (301), a first driver (302), a semi-arc heating plate (303), a first gear (304), a second gear (305), a guide tube (306), a moving block (307), a spring (308), a guide rod (309) and an elliptical wheel (3010), wherein the top of the drying chamber (2) is provided with a mounting groove (301), a guide tube (306) is sleeved at a middle position of the top of the mounting groove (301), the guide tube (306) extends out of the drying chamber (2) and is provided with a first gear (304), and the top of the drying chamber (2) is provided with a guide tube (306). A fixing groove is installed, and a first driver (302) is provided at the top of the fixing groove, a second gear (305) meshing with the first gear (304) is provided at the output end of the first driver (302), an elliptical wheel (3010) is installed on the outside of the conduit (306), guide rods (309) are installed at the bottom of both sides of the inside of the installation groove (301), and moving blocks (307) and springs (308) elastically connected to the moving blocks (307) are respectively provided on the outside of the guide rods (309), and semi-arc heating plates (303) are provided at the bottoms of the two groups of moving blocks (307);The air guide drying mechanism (4) comprises an annular guide groove (401), a second driver (402), a third gear (403), a hot air blower (404), an air guide cylinder (405), a fourth gear (406), an exhaust hood (407) and a diversion pipe (408). The hot air blower (404) and the second driver (402) are respectively installed on the top of the drying chamber (5). An annular guide groove (401) is provided at the edge of the top of the drying chamber (5), and an annular plate is provided at the bottom of the annular guide groove (401). The interior of the drying chamber (5) is provided with an annular plate. An air guide cylinder (405) is sleeved on the top, and the air guide cylinder (405) is interconnected with the annular plate. The output end of the hot air blower (404) is provided with an air guide port extending to the inside of the air guide cylinder (405). The output end of the second driver (402) is provided with a third gear (403). The outside of the air guide cylinder (405) is provided with a fourth gear (406) that meshes with the third gear (403). The bottom of the air guide cylinder (405) is connected to an exhaust hood (407). The bottoms of both sides of the air guide cylinder (405) are connected to diversion pipes (408).

2. A continuous drying device for lost foam coating according to claim 1, characterized in that: The positioning members (10) are respectively composed of a conical block and a conical hole. The tops of the two groups of support platforms (9) are equipped with conical blocks, and the bottoms of the two groups of placement racks (11) are provided with conical holes that fit the conical blocks.

3. The continuous drying device for lost foam coating according to claim 1, characterized in that: Two sets of guide rails are provided at the bottom of the base (1), and guide blocks connected to the internal thread blocks (8) are provided on the outer sides of the guide rails.

4. The continuous drying device for lost foam coating according to claim 1, characterized in that: An air guide port is provided at the bottom of one side of the air guide tube (16), and the air guide port extends to the inner side of the conduit (306).

5. The continuous drying device for lost foam coating according to claim 1, characterized in that: The bottoms of the two groups of diverter pipes (408) are provided with exhaust heads, and exhaust holes are provided on the sides of the exhaust heads close to each other, and the two groups of exhaust holes are arranged horizontally, and the exhaust cover (407) is arranged vertically.

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