Drying device for food can coating

Abstract

The utility model belongs to the technical field of food can drying devices, and discloses a food can coating drying device which comprises a cylindrical platform and a drying box fixed to the cylindrical platform, a drying mechanism is arranged on the drying box, and an annular rotary disc coaxial with the cylindrical platform is rotationally installed at the top of the cylindrical platform; an arc-shaped channel which is coaxial with the cylindrical platform and allows the annular rotating disc and the milk powder cans to go in and out is formed in the drying box in a penetrating mode, a circular plate is rotationally installed at the top of the annular rotating disc, and the circular plate and the cylindrical platform are jointly provided with a clamping mechanism. The cylindrical platform is provided with a rotating assembly used for driving the annular rotating disc to rotate along the axis of the cylindrical platform. According to the milk powder can drying device, by arranging the clamping mechanism, the purpose of automatically clamping or loosening the milk powder can is achieved, the tedious operation that a screw needs to be manually rotated to clamp or loosen the can body is omitted, and the drying device is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to food can drying device technical field, especially in food can coating is with drying device. BACKGROUND

[0002] Food can coating refers to the outer wall of food can is coated with a layer of paint, paint can reduce the probability of can body corrosion by external environment appears rust and corrosion, prolongs the service life of can body, increases the aesthetic appearance simultaneously, such as milk powder can, in order to accelerate the speed of paint drying, generally will use drying device to the milk powder can surface after painting paint is dried.

[0003] In the Chinese utility model patent with the publication number CN221581051U discloses a kind of milk powder can coating drying device, including drying cabinet, the bottom of the drying cabinet is fixedly installed with function structure, the function structure includes the drive motor at the bottom of drying cabinet, the output shaft of the drive motor is fixedly installed with fixed plate, the outer surface of the fixed plate is movably installed with screw rod, the outer surface of the screw rod is threadedly connected with two clamping plates, and the clamping plates are extended to the outer surface of the fixed plate.

[0004] For the related technology in the above, the inventor believes that there are the following defects: before or after the staff carries out drying to can body, manually rotates screw rod and drives two clamping plates relative motion, so that the outer surface of milk powder can body can be clamped or loosened, it is more tedious to operate, not convenient for the use of drying device. UTILITY MODEL CONTENT

[0005] In order to solve the above problems, the utility model provides a kind of drying device for food can coating.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a kind of drying device for food can coating, including cylindrical platform and the drying cabinet fixed on the cylindrical platform, the drying cabinet is provided with drying mechanism, the top of the cylindrical platform is rotatably installed with annular turntable coaxially arranged with cylindrical platform and used to place milk powder can, the drying cabinet is provided with arc-shaped passageway coaxially arranged with cylindrical platform and for the annular turntable and milk powder can to go in and out, the top of the annular turntable is rotatably installed with circular plate for placing inverted milk powder can, the circular plate and cylindrical platform are coaxially arranged with clamping mechanism for abutting against milk powder can inner wall or separating from milk powder can inner wall, the drying cabinet is provided with rotating mechanism for driving circular plate to rotate along the axis of circular plate, the cylindrical platform is provided with rotating assembly for driving annular turntable to rotate along the axis of cylindrical platform.

[0007] By adopting the technical scheme, in the process of drying the milk powder can, the milk powder can is placed upside down on the top of the circular plate, then the rotating assembly drives the annular turntable to rotate along the axis of the cylindrical platform and drives the circular plate and the milk powder can to move into the drying box, in the process, the inner wall of the milk powder can is abutted and positioned by the clamping mechanism, at this time, the drying mechanism dries the milk powder can, at the same time, the circular plate drives the milk powder can to rotate along the axis of the circular plate by the rotating mechanism, the side wall of the milk powder can along the axis can be dried, ensuring the uniformity of drying. After drying, the annular turntable is driven to rotate and drive the circular plate and the milk powder can to move out of the drying box, in the process, the milk powder is automatically released by the clamping mechanism, eliminating the tedious operation of manually rotating the screw rod to clamp or release the can body, facilitating the use of the drying device.

[0008] Further, the clamping mechanism includes two groups of clamping assemblies symmetrically distributed about the axis of the circular plate, each group of the clamping assemblies includes a fixed plate fixed to the top of the circular plate, a connecting rod penetratingly arranged on the fixed plate and slidingly fitted, an abutting block fixed to the end of the connecting rod away from the axis of the circular plate, and a connecting block fixed to the end of the connecting rod close to the axis of the circular plate, the distance between the mutually distant side walls of the two abutting blocks is less than the diameter of the milk powder can, and the clamping mechanism further includes a moving assembly for driving the two abutting blocks to move away from each other.

[0009] By adopting the technical scheme, the staff places the milk powder can upside down on the top of the circular plate, and the two abutting blocks are located in the milk powder can, then the two abutting blocks are driven to move away from each other by the moving mechanism until the abutting blocks abut against the inner wall of the milk powder can, achieving the purpose of positioning the milk powder can, ensuring the stability of the milk powder can during drying.

[0010] Further, the top of the cylindrical platform is provided with an annular groove, the moving assembly includes a sliding rod penetratingly arranged on the top of the circular plate and gap-fitted, a support block fixed to the upper end of the sliding rod and located between the two connecting blocks, a supporting spring sleeved on the sliding rod and fixed between the support block and the circular plate, a movable rod slidingly connected in the annular groove, and a lifting protrusion fixed in the annular groove, the lower end of the sliding rod is rotationally connected with the top of the movable rod, the top of the lifting protrusion is parallel to the top of the cylindrical platform, both ends of the lifting protrusion are provided with inclined surfaces, the distance between the inclined surfaces and the bottom of the annular groove decreases from the middle to both sides of the lifting protrusion, the axes of the annular groove, the lifting protrusion and the cylindrical platform are coincident, the top surface of the support block has a smaller diameter than the bottom surface of the support block, the side wall of the connecting block close to the axis of the circular plate is a circular arc surface matched with the support block, and the lower end of the movable rod movably has a rolling ball rollingly connected with the inner bottom wall of the annular groove.

[0011] By adopting the technical scheme, in the rotating process of the annular turntable, the sliding rod connected with the annular turntable, the movable rod connected with the sliding rod and the ball connected with the movable rod all move in the annular groove. The ball first moves along the bottom of the annular groove to the inclined surface at one end of the lifting protrusion, then moves along the inclined surface to the top of the lifting protrusion, and then moves from the top of the lifting protrusion to the inclined surface at the other end of the lifting protrusion, and finally moves to the bottom of the annular groove. Since the distance between the inclined surface and the bottom of the annular groove decreases from the middle of the lifting protrusion to both sides, in this process, the ball drives the movable rod to first move upward, then move horizontally along the top of the lifting protrusion, and finally descend and reset to the original height. Therefore, the sliding rod connected with the movable rod and the support block connected with the sliding rod are first moved upward, then move horizontally along the top of the lifting protrusion, and finally descend and reset to the original height. Since the top surface of the support block has a smaller diameter than the bottom surface of the support block, the side wall of the connecting block near the axis of the circular plate is a circular arc surface matched with the support block. In the process of the upward movement of the support block, the two connecting blocks move away from each other to make the connecting rods connected with the two connecting blocks and the abutting blocks connected with the two connecting blocks move away from each other until the two abutting blocks abut against the inner wall of the milk powder tank to achieve the purpose of abutting and positioning the milk powder tank. After the support block descends and resets, since the support block releases the restriction on the connecting block, the milk powder tank can be removed from the circular plate at this time, thereby achieving the purpose of automatically clamping or releasing the milk powder tank, and facilitating the use of the drying device.

[0012] Further, the rotating mechanism includes a driven gear fixedly sleeved on the circular plate and an arc-shaped gear rack fixed on the inner wall of the circular arc-shaped channel and engaged with the driven gear. The axis of the arc-shaped gear rack coincides with the axis of the cylindrical platform.

[0013] By adopting the technical scheme, in the rotating process of the annular turntable, the driven gear will engage with the arc-shaped gear rack. Since the circular plate is rotatably installed on the annular turntable, the driven gear drives the circular plate to rotate, thereby achieving the purpose of self-rotation of the milk powder tank and improving the drying effect of the milk powder tank.

[0014] Further, the rotating assembly includes a rotating motor fixedly installed on the inner bottom wall of the cylindrical platform, a driving gear fixedly sleeved on the output end of the rotating motor, and a gear ring fixed on the annular turntable and engaged with the driving gear. The axis of the gear ring coincides with the axis of the annular turntable.

[0015] By adopting the technical scheme, the rotating motor drives the driving gear to rotate after the rotating motor works. Since the gear ring is engaged with the driving gear and fixed on the annular turntable, the gear ring drives the annular turntable to rotate, thereby ensuring the normal drying work of the drying device.

[0016] Further, the drying box is provided with shielding assemblies, the shielding assemblies are provided with two groups and are located at two ends of the arc-shaped channel respectively, each of the shielding assemblies comprises a mounting frame fixed to the top of the drying box, an electric hydraulic push rod fixed to the mounting frame, and a door fixed to the end of the electric hydraulic push rod, the drying box is provided with a sliding groove in communication with the arc-shaped channel and in sliding cooperation with the door, and the sidewall of the cylindrical platform is provided with an infrared sensor near the door.

[0017] By adopting the above technical scheme, when the infrared sensor detects the milk powder can during the rotation of the circular plate, the end of the electric hydraulic push rod is retracted to the shortest length, so that the door connected with the end of the electric hydraulic push rod is lifted to the highest position, and then when the milk powder can moves into the drying box and the infrared sensor cannot detect the milk powder can, the end of the electric hydraulic push rod is extended to the maximum length, so that the door is lowered and reset, and the setting of the door reduces the probability that the hot air discharged through the arc-shaped channel affects the drying of the milk powder can.

[0018] Further, the clamping spring is fixed between the fixed plate and the abutting block.

[0019] By adopting the above technical scheme, the clamping spring is stressed and gradually elongated during the lifting and extrusion of the supporting block on the connecting block. During the descending of the supporting block, the clamping spring is gradually retracted and reset, so that the abutting block connected with the clamping spring moves towards the direction of the supporting block and is reset for the next time when the milk powder can is placed on the circular plate.

[0020] Further, the drying mechanism comprises an air heater fixed to the top of the drying box, an air inlet pipe fixed to and in communication with the air inlet end of the air heater, an air outlet pipe fixed to and in communication with the air outlet end of the air heater, and a blowing box fixed to the inner wall of the drying box away from the axis of the cylindrical platform, the blowing box is provided with an air outlet hole in the sidewall close to the axis of the cylindrical platform, and the end of the air outlet pipe away from the air heater is fixed to and in communication with the sidewall of the blowing box away from the axis of the cylindrical platform.

[0021] By adopting the above technical scheme, during the drying of the milk powder can, the air enters the air heater from the air inlet pipe and the air inlet end of the air heater, at the same time, the air heater heats the entering air, then the heated air is discharged into the blowing box from the air outlet end of the air heater and the air outlet pipe, and finally is discharged from the air outlet hole, so as to achieve the purpose of drying the milk powder can and ensure the drying work of the drying device.

[0022] In summary, the utility model has the following beneficial effects: in the application, through the setting up clamping mechanism, realize the purpose of automatic clamping or loosening of milk powder jar, spare the need manual rotation screw rod to clamp or loosen the jar body of cumbersome operation, convenient for the use of drying device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic diagram of the embodiment of the utility model;

[0024] Figure 2 It is the cross section structure schematic diagram for highlighting the internal connecting structure of annular groove of the embodiment of the utility model;

[0025] Figure 3 It is the cross section structure schematic diagram for highlighting the internal connecting structure of annular groove of the embodiment of the utility model;

[0026] Figure 4 It is the cross section structure schematic diagram for highlighting the connecting block and the support block of the embodiment of the utility model;

[0027] Figure 5 It is Figure 2 The enlarged schematic diagram of A in

[0028] Figure 6 It is Figure 2 The enlarged schematic diagram of B in

[0029] In the drawing: 1, cylindrical platform;2, drying box;3, drying mechanism;31, air heater;32, air inlet pipe;33, air outlet pipe;34, blowing box;4, annular turntable;5, circular plate;6, clamping mechanism;61, clamping assembly;611, fixed plate;612, connecting rod;613, abutting block;614, connecting block;62, moving assembly;621, slide rod;622, support block;623, support spring;624, movable rod;625, lifting convex strip;7, rotating mechanism;71, driven gear;72, arc-shaped rack;8, rotating assembly;81, rotating motor;82, driving gear;83, gear ring;9, annular groove;10, ball;11, shielding assembly;111, mounting frame;112, electric hydraulic push rod;113, door;12, infrared sensor;13, clamping spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application; obviously, the described embodiments are only part of the embodiments of the application, not all the embodiments of the application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the application belong to the protection scope of the application.

[0031] AsFigures 1-6 As shown, the food can coating drying device disclosed by the embodiment of the application comprises a cylindrical platform 1, a drying box 2, a drying mechanism 3, a rotating assembly 8, a clamping mechanism 6, a rotating mechanism 7, and a shielding assembly 11. The drying box 2 is fixed to the cylindrical platform 1. The top of the cylindrical platform 1 is provided with an annular groove 9. The top of the cylindrical platform 1 is rotatably provided with an annular turntable 4 coaxial with the cylindrical platform 1 and used for placing milk powder cans.

[0032] The drying mechanism 3 is arranged on the drying box 2. The drying mechanism 3 comprises an air heater 31, an air inlet pipe 32, an air outlet pipe 33, and a blowing box 34. The air heater 31 is fixed to the top of the drying box 2. The air inlet pipe 32 is fixed and communicated with the air inlet end of the air heater 31. The air outlet pipe 33 is fixed and communicated with the air outlet end of the air heater 31. The blowing box 34 is fixed to the inner wall of the drying box 2 away from the axis of the cylindrical platform 1. The side wall of the blowing box 34 close to the axis of the cylindrical platform 1 is provided with an air outlet hole. The end of the air outlet pipe 33 away from the air heater 31 is fixed and communicated with the side wall of the blowing box 34 away from the axis of the cylindrical platform 1.

[0033] The rotating assembly 8 is arranged on the cylindrical platform 1 and used for driving the annular turntable 4 to rotate along the axis of the cylindrical platform 1. The rotating assembly 8 comprises a rotating motor 81, a driving gear 82, and a gear ring 83. The rotating motor 81 is fixed to the inner bottom wall of the cylindrical platform 1. The driving gear 82 is fixedly sleeved on the output end of the rotating motor 81. The gear ring 83 is fixed to the annular turntable 4 and engaged with the driving gear 82. The axis of the gear ring 83 coincides with the axis of the annular turntable 4.

[0034] The clamping mechanism 6 is arranged on the circular plate 5 and the cylindrical platform 1. The clamping mechanism 6 is used for abutting against or separating from the inner wall of the milk powder can. The clamping mechanism 6 comprises a clamping assembly 61 and a moving assembly 62. The clamping assembly 61 is arranged in two groups and symmetrically distributed about the axis of the circular plate 5.

[0035] Each of the clamping assemblies 61 comprises a fixed plate 611, a connecting rod 612, an abutting block 613, and a connecting block 614. The fixed plate 611 is fixed to the top of the circular plate 5. The connecting rod 612 is arranged through the fixed plate 611 and slidably fitted. The abutting block 613 is fixed to the end of the connecting rod 612 away from the axis of the circular plate 5. The distance between the mutually faraway side walls of the two abutting blocks 613 is smaller than the diameter of the milk powder can. The connecting block 614 is fixed to the end of the connecting rod 612 close to the axis of the circular plate 5.

[0036] The moving assembly 62 is used to drive the two abutting blocks 613 to move away from each other, and the moving assembly 62 comprises a sliding rod 621, a supporting block 622, a supporting spring 623, a movable rod 624 and a lifting protrusion 625. The sliding rod 621 is arranged through the top of the circular plate 5 and is in clearance fit, the supporting block 622 is fixed with the upper end of the sliding rod 621 and is located between the two connecting blocks 614. The top surface of the supporting block 622 has a smaller diameter than the bottom surface of the supporting block 622, and the side wall of the connecting block 614 close to the axis of the circular plate 5 is a circular arc surface matched with the supporting block 622. The supporting spring 623 is sleeved on the sliding rod 621 and is fixed between the supporting block 622 and the circular plate 5, the movable rod 624 is slidingly connected in the annular groove 9, and the lower end of the movable rod 624 movably installs the ball 10 in rolling connection with the bottom wall of the annular groove 9. The lower end of the sliding rod 621 is rotationally connected with the top of the movable rod 624, and the lifting protrusion 625 is fixed in the annular groove 9. The top of the lifting protrusion 625 is parallel to the top of the cylindrical platform 1, and the lifting protrusion 625 is provided with inclined surfaces at both ends. The distance between the inclined surfaces and the bottom of the annular groove 9 decreases from the middle part of the lifting protrusion 625 to both sides, and the axis of the annular groove 9, the lifting protrusion 625 and the cylindrical platform 1 are coincident.

[0037] In the process of drying the milk powder tank, first place the milk powder tank upside down on the top of the circular plate 5, then rotate the motor 81 to drive the driving gear 82 to rotate, since the gear ring 83 is engaged with the driving gear 82, the gear ring 83 is fixed on the annular turntable 4, so that the gear ring 83 drives the annular turntable 4 to rotate, the circular plate 5 and the milk powder tank move to the drying box 2 with the annular turntable 4, in this process, the sliding rod 621 connected with the annular turntable 4, the movable rod 624 connected with the sliding rod 621 and the ball 10 connected with the movable rod 624 all move in the annular groove 9, first move along the bottom of the annular groove 9 to the inclined surface of one end of the lifting protrusion 625, then move along the inclined surface to the top of the lifting protrusion 625, since the distance between the inclined surface and the groove bottom of the annular groove 9 decreases from the middle to both sides of the lifting protrusion 625, the ball 10 drives the movable rod 624 to rise, so that the sliding rod 621 connected with the movable rod 624 and the support block 622 connected with the sliding rod 621 all rise first, since the top surface of the support block 622 is smaller in diameter than the bottom surface of the support block 622, the side wall of the connecting block 614 near the axis of the circular plate 5 is a circular arc surface matched with the support block 622, in the process of the support block 622 rising, the two connecting blocks 614 move away from each other to make the connecting rod 612 connected with the two connecting blocks 614 and the abutting block 613 connected with the two connecting blocks 614 move away from each other, until the two abutting blocks 613 abut against the inner wall of the milk powder tank to achieve the purpose of abutting and positioning the milk powder tank. When the milk powder tank is dried, drive the annular turntable 4 to continue to rotate, the ball 10 will first move along the top of the lifting protrusion 625, then move to the inclined surface of one end of the lifting protrusion 625, and finally move to the bottom of the annular groove 9, in this process, the ball 10, the movable rod 624, the sliding rod 621 and the support block 622 all descend and reset, since the support block 622 releases the restriction on the connecting block 614, the milk powder tank can be taken off from the circular plate 5 at this time, so as to achieve the purpose of automatically clamping or releasing the milk powder tank, which facilitates the use of the drying device.

[0038] The rotating mechanism 7 is arranged on the drying box 2 and is used to drive the circular plate 5 to rotate around the axis of the circular plate 5. The rotating mechanism 7 includes a driven gear 71 and an arc-shaped gear rack 72, and the driven gear 71 is fixedly sleeved on the circular plate 5. The arc-shaped gear rack 72 is fixed on the inner wall of the circular arc-shaped channel and is engaged with the driven gear 71, and the axis of the arc-shaped gear rack 72 coincides with the axis of the cylindrical platform 1. In the process of rotating the annular turntable 4, the driven gear 71 will be engaged with the arc-shaped gear rack 72, since the circular plate 5 is rotatably installed on the annular turntable 4, the driven gear 71 drives the circular plate 5 to rotate, that is, the purpose of rotating the milk powder tank is achieved, which improves the drying effect of the milk powder tank.

[0039] The shielding assembly 11 is arranged on the drying box 2, and two groups of shielding assemblies 11 are arranged at two ends of the circular-arc-shaped channel. Each group of shielding assemblies 11 comprises a mounting frame 111, an electric hydraulic push rod 112 and a door 113, and the mounting frame 111 is fixed to the top of the drying box 2. The electric hydraulic push rod 112 is fixed to the mounting frame 111, and the door 113 is fixed to the end of the push rod of the electric hydraulic push rod 112. The drying box 2 is provided with a sliding groove in communication with the circular-arc-shaped channel and in sliding cooperation with the door 113. The side wall of the cylindrical platform 1 is provided with an infrared sensor 12 near the door 113, and the model of the infrared sensor 12 is NACS83454S. The specific working principle and specific structure of the infrared sensor 12 are not described herein, and the infrared sensor 12 and the electric hydraulic push rod 112 are electrically connected to the single-chip microcomputer in actual use. When the infrared sensor 12 senses the milk powder can, the signal is transmitted to the single-chip microcomputer, the single-chip microcomputer controls the end of the push rod of the electric hydraulic push rod 112 to retract and drives the door 113 to rise, so that the milk powder can can enter the drying box 2. When the infrared sensor 12 cannot sense the milk powder can, the single-chip microcomputer controls the end of the push rod of the electric hydraulic push rod 112 to extend and drives the door 113 to descend and reset, thereby reducing the probability of hot air being discharged from the drying box 2 during drying.

[0040] During the rotation of the circular disc and the milk powder can, when the infrared sensor 12 detects the milk powder can, the end of the push rod of the electric hydraulic push rod 112 retracts to the shortest length, so that the door 113 connected to the end of the push rod of the electric hydraulic push rod 112 rises to the highest position. Subsequently, when the milk powder can moves into the drying box 2 and the infrared sensor 12 cannot detect the milk powder can, the end of the push rod of the electric hydraulic push rod 112 extends to the maximum length, so that the door 113 descends and resets. The arrangement of the door 113 reduces the probability of affecting the drying of the milk powder can due to the hot air being discharged through the circular-arc-shaped channel.

[0041] The clamping spring 13 is fixed between the fixed plate 611 and the abutting block 613. During the rising of the supporting block 622 and the extrusion of the connecting block 614, the clamping spring 13 is stressed and gradually elongated. During the descending of the supporting block 622, the clamping spring 13 gradually retracts and resets, so that the abutting block 613 connected to the clamping spring 13 moves towards the supporting block 622 and resets, so as to place the milk powder can on the circular plate 5 next time.

[0042] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A drying device for coating food cans, comprising a cylindrical platform (1) and a drying box (2) fixed on the cylindrical platform (1), wherein a drying mechanism (3) is provided on the drying box (2), characterized in that: The top of the cylindrical platform (1) is rotatably provided with an annular turntable (4) coaxial with the cylindrical platform (1) and used for placing milk powder cans, the drying box (2) is provided with an arc-shaped passage coaxial with the cylindrical platform (1) and used for the annular turntable (4) and the milk powder cans to pass in and out, the top of the annular turntable (4) is rotatably provided with a circular plate (5) used for placing inverted milk powder cans, the circular plate (5) is jointly provided with a clamping mechanism (6) on the cylindrical platform (1) and used for abutting against or separating from the inner wall of the milk powder can, the drying box (2) is provided with a rotating mechanism (7) used for driving the circular plate (5) to rotate along the axis of the circular plate (5), and the cylindrical platform (1) is provided with a rotating assembly (8) used for driving the annular turntable (4) to rotate along the axis of the cylindrical platform (1).

2. The drying apparatus for food can coating according to claim 1, characterized in that: The clamping mechanism (6) comprises two groups of clamping assemblies (61) symmetrically distributed about the axis of the circular plate (5), each group of the clamping assemblies (61) comprises a fixed plate (611) fixed to the top of the circular plate (5), a connecting rod (612) penetratingly provided on the fixed plate (611) and in sliding fit, an abutting block (613) fixed to the end of the connecting rod (612) away from the axis of the circular plate (5), and a connecting block (614) fixed to the end of the connecting rod (612) close to the axis of the circular plate (5), the distance between the mutually faraway side walls of the two abutting blocks (613) is smaller than the diameter of the milk powder can, and the clamping mechanism (6) further comprises a moving assembly (62) used for driving the two abutting blocks (613) to move away from each other.

3. The drying apparatus for food can coating according to claim 2, characterized in that: The top of the cylindrical platform (1) is provided with an annular groove (9), the moving assembly (62) comprises a sliding rod (621) penetratingly provided on the top of the circular plate (5) and in clearance fit, a supporting block (622) fixed to the upper end of the sliding rod (621) and located between the two connecting blocks (614), a supporting spring (623) sleeved on the sliding rod (621) and fixed between the supporting block (622) and the circular plate (5), a movable rod (624) slidingly connected in the annular groove (9), and a lifting convex strip (625) fixed in the annular groove (9), the lower end of the sliding rod (621) is rotatably connected with the top of the movable rod (624), the top of the lifting convex strip (625) is parallel to the top of the cylindrical platform (1), the two ends of the lifting convex strip (625) are provided with inclined surfaces, the distance between the inclined surfaces and the groove bottom of the annular groove (9) decreases from the middle part of the lifting convex strip (625) to the two sides, the axes of the annular groove (9), the lifting convex strip (625) and the cylindrical platform (1) are coincident, the top surface of the supporting block (622) has a smaller diameter than the bottom surface of the supporting block (622), the side wall of the connecting block (614) close to the axis of the circular plate (5) is a circular arc surface matched with the supporting block (622), and the lower end of the movable rod (624) is movably provided with a rolling ball (10) rollingly connected with the inner bottom wall of the annular groove (9).

4. The drying apparatus for food can coating according to claim 1, characterized in that: The rotating mechanism (7) comprises a driven gear (71) fixedly sleeved on the circular plate (5) and an arc-shaped rack (72) fixed on the inner wall of the circular arc-shaped channel and engaged with the driven gear (71), and the axis of the arc-shaped rack (72) coincides with the axis of the cylindrical platform (1).

5. The drying apparatus for food can coating according to claim 1, characterized in that: The rotating assembly (8) comprises a rotating motor (81) fixed on the bottom wall of the cylindrical platform (1), a driving gear (82) fixedly sleeved on the output end of the rotating motor (81), and a gear ring (83) fixed on the annular turntable (4) and engaged with the driving gear (82), and the axis of the gear ring (83) coincides with the axis of the annular turntable (4).

6. The drying apparatus for food can coating according to claim 1, characterized in that: The drying box (2) is provided with a shielding assembly (11), the shielding assembly (11) is provided with two groups and is located at both ends of the circular arc-shaped channel, each shielding assembly (11) comprises a mounting frame (111) fixed on the top of the drying box (2), an electric hydraulic push rod (112) fixed on the mounting frame (111), and a door (113) fixed on the push rod end of the electric hydraulic push rod (112), the drying box (2) is provided with a sliding groove in communication with the circular arc-shaped channel and in sliding cooperation with the door (113), and the side wall of the cylindrical platform (1) is provided with an infrared sensor (12) near the door (113).

7. The drying apparatus for food can coating according to claim 2, characterized in that: The clamping spring (13) is fixed between the fixed plate (611) and the abutting block (613).

8. The drying apparatus for food can coating according to claim 1, characterized in that: The drying mechanism (3) comprises an air heater (31) fixed on the top of the drying box (2), an air inlet pipe (32) fixedly connected with the air inlet end of the air heater (31), an air outlet pipe (33) fixedly connected with the air outlet end of the air heater (31), and a blowing box (34) fixed on the inner wall of the drying box (2) away from the axis of the cylindrical platform (1), the blowing box (34) is provided with an air outlet hole on the side wall close to the axis of the cylindrical platform (1), and the end of the air outlet pipe (33) away from the air heater (31) is fixedly connected with the side wall of the blowing box (34) away from the axis of the cylindrical platform (1).

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