Rotary automatic glaze spraying device for cast iron kitchenware capable of preventing glaze surface from sagging

Abstract

The invention relates to the technical field of glaze spraying devices, in particular to a rotary automatic glaze spraying device for cast iron kitchenware and capable of preventing glaze sagging. The invention provides a self-adaptive solution which is low in cost and high in reliability to solve the technical problems that when an existing automatic spraying device treats a workpiece with a complex curved surface, the spraying distance and the spraying angle are mismatched due to fixed parameters, and sagging or bottom leakage is likely to be caused. The device comprises a mechanism for conveying and rotating workpieces, and a self-adaptive spraying component consisting of a spray head assembly, a guide assembly and a reference assembly. A rotating sample consistent with a workpiece is used as a reference, a detection rod tightly attached to the sample is used for sensing the contour in real time, and the linear motion of the detection rod is synchronously transmitted to a spray head in a delay-free mode through a closed hydraulic transmission mechanism. Therefore, the multiple spray heads are driven to always automatically keep the optimal constant distance and vertical angle with the surface of the rotating workpiece in the spraying process, and constant-distance shape follow-up spraying is achieved.

Description

Technical Field

[0001] This invention relates to the field of glazing equipment technology, and in particular to a rotary automatic glazing device for cast iron kitchenware that prevents glaze from running. Background Technology

[0002] Cast iron cookware holds a significant position in the cookware market due to its excellent heat retention, durability, and health benefits. To improve its corrosion resistance, wear resistance, and aesthetic appearance, a vitreous glaze coating is typically applied to the surface. Rotary automatic spray glazing is currently the mainstream glazing process. It automates production by fixing the workpiece on a rotating fixture and spraying it with a fixed or simply moving spray gun during rotation. Compared to traditional manual spraying, this method significantly improves efficiency and consistency and is widely used in the large-scale manufacturing of round cast iron cookware such as saucepans, frying pans, and stew pots.

[0003] However, traditional rotary spraying devices mostly operate on fixed or pre-programmed simple trajectories. When dealing with cast iron cookware with complex three-dimensional curved surfaces, such as woks with curved bodies and flat bottoms, their inherent technical limitations become apparent. Because the spray gun parameters and workpiece movement trajectory are fixed, when the workpiece rotates, causing its surface to transition from a flat to a curved surface, the spraying distance between the spray gun and the workpiece surface, the incident angle, and the linear velocity of the local workpiece surface all change drastically. This dynamic instability easily leads to excessive glaze buildup in flat areas, causing runs, while insufficient coverage in curved edge areas results in exposed substrate, severely affecting coating uniformity and yield. To address this problem, some advanced solutions attempt to use multi-axis robots equipped with vision sensors to provide independent servo drive and real-time ranging and posture adjustment for each spray head. However, this inevitably relies on expensive 3D vision systems, laser sensors, and multiple high-precision servo motors, resulting in complex system structures, high costs, and high maintenance thresholds, making it difficult to popularize in large-scale production where cost-effectiveness is paramount. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background art by proposing a rotary automatic glazing device for cast iron kitchenware that, while ensuring coating quality, is stable, efficient, and cost-controllable, preventing glaze dripping.

[0005] The technical solution of the present invention: A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping, comprising a support box and a conveyor belt passing through the inside of the support box, wherein multiple support frames are installed on the conveyor belt, and multiple support seats for supporting the workpiece to be sprayed are rotatably installed on the support frames; further comprising: a rotary drive mechanism installed in the support box and support frames to drive the multiple support seats to rotate synchronously; at least one set of adaptive spraying components installed on one side of the support box, wherein the adaptive spraying components include a nozzle assembly, a guide assembly, and a reference assembly; the nozzle assembly includes multiple slidably arranged nozzles, the multiple nozzles corresponding to different spraying positions, the axis of the nozzles being perpendicular to the plane of the workpiece and perpendicular to the tangent direction of the arc surface of the workpiece; the reference assembly including a sample with the same shape as the workpiece, the reference assembly driving the sample to rotate synchronously with the sample on the support seat; the guide assembly including a detection rod that corresponds one-to-one with the multiple nozzles and is parallel to the axis and is in contact with the sample; and a transmission mechanism installed between the corresponding nozzles and the detection rods, the transmission mechanism driving the nozzles and the detection rods to slide synchronously.

[0006] Optionally, the rotary drive mechanism includes a drive shaft rotatably mounted inside the support frame, a gear fixedly mounted on the drive shaft, and a rack fixedly mounted inside the support box. A first synchronous belt connects two adjacent support seats, and a second synchronous belt is installed between the drive shaft and one of the support seats.

[0007] Optionally, the adaptive spraying component further includes two bases, and the spray head assembly includes a first mounting plate fixedly mounted on one of the bases, multiple sets of first brackets fixedly mounted on the first mounting plate, and a first support sleeve fixedly mounted on the first brackets. A slide rod is slidably mounted on the same set of first support sleeves, and the spray head is fixedly connected to the slide rod.

[0008] Optionally, a conveying pipe is fixedly installed on the nozzle, and the other end of the conveying pipe is connected to a feeding device.

[0009] Optionally, the guide assembly includes a second mounting plate fixedly mounted on another base, multiple sets of second brackets fixedly mounted on the second mounting plate, and a second support sleeve fixedly mounted on the second brackets, with the detection rod slidably mounted on the second support sleeve.

[0010] Optionally, a ball bearing is rotatably mounted on one end of the detection rod, and an elastic element is installed between the second mounting plate and the detection rod.

[0011] Optionally, the reference component includes a rotating shaft rotatably mounted on a support box and a fastening seat fixedly mounted on the rotating shaft. The sample is detachably connected to the fastening seat. A motor is fixedly mounted on the support box, and the output shaft of the motor is coaxially fixedly connected to the rotating shaft. A position detection component that determines the motor start-up time is installed inside the support box. The position detection component includes a photoelectric sensor fixedly mounted inside the support box and a protrusion fixedly mounted on the support frame.

[0012] Optionally, the transmission mechanism includes a first transmission cylinder connected to the slide rod and a second transmission cylinder connected to the detection rod; the first transmission cylinder includes a first cylinder body fixedly mounted on a first mounting plate and a first sealing plate slidably and sealingly connected to the interior of the first cylinder body, a first connecting shaft fixedly mounted on the first sealing plate, the first connecting shaft extending to the outside of the first cylinder body and fixedly connected to the slide rod; the second transmission cylinder includes a second cylinder body fixedly mounted on a second mounting plate and a second sealing plate slidably and sealingly connected to the interior of the second cylinder body, a second connecting shaft fixedly mounted on the second sealing plate, the second connecting shaft extending to the outside of the second cylinder body and fixedly connected to the detection rod.

[0013] Optionally, both ends of the first cylinder and the second cylinder are connected by pipes, and the first cylinder, the second cylinder, and the pipes are all filled with a transmission medium.

[0014] Optionally, support bodies are fixedly installed on both sides of the support frame, rollers are rotatably installed inside the support bodies, and a support seat for supporting the rollers is fixedly installed inside the support box.

[0015] Compared with existing technologies, this application includes at least one of the following beneficial technical effects: Through a pure mechanical and hydraulic linkage design, this application achieves adaptive and precise control of the spraying distance at extremely low cost. The spray head can strictly follow the contour changes of the complex curved surface of the workpiece, fundamentally solving the problem of glaze accumulation or uneven coverage caused by distance and angle changes in the transition area of ​​curved surfaces in traditional fixed parameter spraying, significantly improving coating uniformity and product qualification rate; Compared with intelligent robot solutions that rely on expensive machine vision and multiple servo motors, this invention has outstanding advantages such as reliable structure, low cost, simple maintenance, and strong anti-interference ability, making it suitable for promotion and application in large-scale production lines of cast iron kitchenware that pursue high cost performance; It can achieve full-coverage automated spraying of products such as cast iron woks and soup pots that require double-sided glazing, and can complete high-precision, constant-distance conformal spraying of inner and outer surfaces in one go, eliminating the efficiency loss and collision risk caused by secondary clamping, repeated positioning, or workpiece flipping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an automatic glazing device; Figure 2 This is a structural schematic diagram of an adaptive spraying component; Figure 3 Schematic diagram of the internal structure of the support box Figure 1 ; Figure 4 Schematic diagram of the internal structure of the support box Figure 2 ; Figure 5 Schematic diagram of the rotary drive mechanism Figure 1 ; Figure 6 Schematic diagram of the rotary drive mechanism Figure 2 ; Figure 7 for Figure 2 A magnified view of a section at point A in the middle; Figure 8 This is a structural schematic diagram of an adaptive spraying component; Figure 9 for Figure 8 A magnified view of a section at point B in the middle; Figure 10 for Figure 8 A magnified view of a section at point C; Figure 11 This is a schematic diagram of the transmission mechanism.

[0017] Reference numerals: 1. Support box; 11. Support seat; 2. Conveyor belt; 3. Support frame; 31. Support base; 32. Support body; 33. Roller; 4. Rotary drive mechanism; 41. Drive shaft; 42. Gear; 43. Rack; 44. First synchronous belt; 45. Second synchronous belt; 5. Adaptive spraying component; 51. Base; 52. Spray head assembly; 521. First mounting plate; 522. First bracket; 523. First support sleeve; 524. Slide rod; 525. Spray head; 526. Conveyor pipe; 53. Guide assembly; 531. Second... Mounting plate; 532, second bracket; 533, second support sleeve; 534, detection rod; 535, ball bearing; 54, reference assembly; 541, rotating shaft; 542, fastening seat; 543, motor; 55, position detection assembly; 551, photoelectric sensor; 552, protrusion; 6, transmission mechanism; 61, first transmission cylinder; 611, first cylinder body; 612, first sealing plate; 613, first connecting shaft; 62, second transmission cylinder; 621, second cylinder body; 622, second sealing plate; 623, second connecting shaft; 63, pipe. Detailed Implementation

[0018] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0019] Example like Figures 1 to 4 As shown, the present invention proposes a rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping. It includes a support box 1 and a conveyor belt 2 passing through the interior of the support box 1. Multiple support frames 3 are mounted on the conveyor belt 2, and multiple support seats 31 for supporting the workpieces to be sprayed are rotatably mounted on the support frames 3. The conveyor belt 2 provides continuous transport power, driving the support frames 3 and the workpieces on them to sequentially pass through the spraying station, realizing assembly line operation. The multiple support seats 31 enable the device to continuously spray multiple workpieces at a time, significantly improving production efficiency.

[0020] Furthermore, support bodies 32 are fixedly installed on both sides of the support frame 3, and rollers 33 are rotatably installed inside the support bodies 32. Support seats 11 that support the rollers 33 are fixedly installed inside the support box 1. Through the cooperation between the rollers 33 and the support seats 11, additional rolling support is provided for the support frame 3, which effectively prevents the conveyor belt 2 from bending, sagging or vibrating due to the weight during long-distance transportation, thereby ensuring the stability of the workpiece during transportation and spraying, and is conducive to obtaining a uniform spraying effect.

[0021] like Figures 2 to 6 As shown, this embodiment also includes a rotary drive mechanism 4 installed in the support box 1 and the support frame 3 to drive multiple support seats 31 to rotate synchronously. Driving multiple support seats 31 to rotate synchronously can ensure that the workpiece fixed on it rotates at a uniform speed during spraying, so that the spray nozzle 525 can fully cover the outer surface of the workpiece and spray it evenly without dead angles, which can prevent local glaze accumulation or excessive thinness.

[0022] Furthermore, the rotary drive mechanism 4 includes a drive shaft 41 rotatably mounted inside the support frame 3, a gear 42 fixedly mounted on the drive shaft 41, and a rack 43 fixedly mounted inside the support box 1. A first synchronous belt 44 connects two adjacent support seats 31, and a second synchronous belt 45 is installed between the drive shaft 41 and one of the support seats 31. When the support frame 3 moves to the spraying station with the conveyor belt 2, the gear 42 on it meshes with the rack 43 fixed on the support box 1. The gear 42 rotates under the action of the rack 43 and drives one support seat 31 to rotate through the second synchronous belt 45. Then, the first synchronous belt 44 drives all support seats 31 to rotate synchronously. The mechanical linkage method is reliable and has high synchronization accuracy. It does not require a separate drive source for each support seat 31, which simplifies control and reduces costs.

[0023] like Figures 1 to 3 and Figures 7 to 8 As shown, this embodiment also includes at least one set of adaptive spraying components 5 installed on one side of the support box 1. The adaptive spraying components 5 include a nozzle assembly 52, a guide assembly 53, and a reference assembly 54. The nozzle assembly 52 includes a plurality of slidably arranged nozzles 525. The plurality of nozzles 525 correspond to different spraying positions. Setting multiple nozzles 525 can perform zoned simultaneous spraying on different areas of the workpiece, such as the bottom plane of the wok, the curved surface of the wok body, and the edge of the wok mouth. This not only improves spraying efficiency, but more importantly, it allows for independent adjustment of spraying distance and angle according to the geometric characteristics of different areas, achieving a globally uniform film thickness. The axis of the nozzle 525 is perpendicular to the plane of the workpiece and perpendicular to the tangent direction of the workpiece's arc surface. By always setting the axis of the nozzle 525 perpendicular to the local surface of the workpiece, it is possible to ensure that the glaze mist cone covers the surface at the optimal angle, maximizing adhesion efficiency and reducing glaze rebound or uneven distribution caused by tilted spraying, resulting in a high-quality coating. The reference component 54 includes a sample with the same shape as the workpiece. The reference component 54 drives the sample to rotate synchronously with the sample on the support base 31. The guide component 53 includes a detection rod 534 that is slidably set and in contact with the sample, corresponding one-to-one with multiple nozzles 525 and parallel to the axis. By using a high-precision sample as a shape reference, when the sample and the real workpiece rotate strictly synchronously under the drive of the motor, the detection rod 534 in contact with the sample surface can reproduce the changes in the workpiece's shape contour in real time and accurately.

[0024] Furthermore, the adaptive spraying component 5 also includes two bases 51. The nozzle assembly 52 includes a first mounting plate 521 fixedly mounted on one of the bases 51, multiple sets of first brackets 522 fixedly mounted on the first mounting plate 521, and a first support sleeve 523 fixedly mounted on the first brackets 522. A slide rod 524 is slidably mounted on the same set of first support sleeves 523. The nozzle 525 is fixedly connected to the slide rod 524. The first support sleeve 523 provides precise linear guidance for the slide rod 524, ensuring that the nozzle 525 can only slide along its axial direction, i.e., towards or away from the workpiece, eliminating lateral swaying, thereby ensuring the accuracy and stability of the spraying distance control.

[0025] The nozzle 525 is fixedly equipped with a conveying pipe 526, and the other end of the conveying pipe 526 is connected to a feeding device. The feeding device, such as a high-pressure glaze pump, stably conveys the glaze to each nozzle 525 through the conveying pipe 526. After being atomized by the nozzle 525, it is sprayed out. By controlling the flow rate and pressure of the feeding device through programming, the amount of glaze produced per unit time can be precisely adjusted, which can realize quantitative spraying and avoid overspraying and sagging.

[0026] Furthermore, the guide assembly 53 includes a second mounting plate 531 fixedly mounted on another base 51, multiple sets of second brackets 532 fixedly mounted on the second mounting plate 531, and a second support sleeve 533 fixedly mounted on the second brackets 532. The detection rod 534 is slidably mounted on the second support sleeve 533. The second support sleeve 533 provides high-precision linear guidance for the detection rod 534, ensuring that the ball bearing 535 at the end of the detection rod 534 can always stably fit against the rotating sample surface, accurately sense contour changes, and transmit this linear motion without distortion.

[0027] One end of the detection rod 534 is rotatably mounted with a ball bearing 535. An elastic element is installed between the second mounting plate 531 and the detection rod 534. The ball bearing 535 converts the sliding friction between the detection rod 534 and the sample surface into rolling friction, which greatly reduces motion resistance and wear, and ensures the follow-up sensitivity and long-term accuracy. The elastic element, such as a spring, provides a continuous preload to the detection rod 534, driving the ball bearing 535 to always press against the sample surface, thereby tracking every minute undulation of the sample contour in real time and without gaps.

[0028] Furthermore, the reference component 54 includes a rotating shaft 541 rotatably mounted on the support box 1 and a fastening seat 542 fixedly mounted on the rotating shaft 541. The sample is detachably connected to the fastening seat 542. A motor 543 is fixedly mounted on the support box 1. The output shaft of the motor 543 is coaxially and fixedly connected to the rotating shaft 541. A position detection component 55 that determines the start time of the motor 543 is installed inside the support box 1. The motor 543 drives the sample to rotate precisely through the rotating shaft 541. The position detection component 55 is set to ensure that the starting phase of each spraying operation is consistent, to ensure the consistency of the spraying path and distance, and to avoid spraying defects caused by phase misalignment.

[0029] The position detection component 55 includes a photoelectric sensor 551 fixedly installed inside the support box 1 and a protrusion 552 fixedly installed on the support frame 3. When the support frame 3 carries the workpiece to the spraying station, the protrusion 552 on it will trigger the photoelectric sensor 551. The sensor sends a signal to start the motor 543, thereby accurately controlling the rotation start timing of the sample and the workpiece and realizing fully automatic synchronous start and stop control.

[0030] like Figures 8 to 11 As shown, the slide bar 524 and the detection bar 534 need to move in strict synchronization in order to convert the contour information obtained by the detection bar 534 from the sample into a one-to-one distance adjustment between the nozzle 525 and the workpiece. This ensures a constant spraying distance and is the core of a mechanical closed loop. Ultimately, this ensures that every point on the workpiece surface can obtain a uniform film thickness, fundamentally eliminating the problems of excessively thick glaze that is prone to dripping or too thin that is incompletely covered due to distance fluctuations.

[0031] To address the aforementioned synchronization issue, this embodiment also includes a transmission mechanism 6 installed between corresponding nozzles 525 and detection rods 534. The transmission mechanism 6 drives the nozzles 525 and detection rods 534 to slide synchronously. The transmission mechanism 6 establishes a rigid, delay-free linkage between the nozzles 525 and detection rods 534, ensuring the real-time and absolute synchronization of distance adjustment. The transmission mechanism 6 includes a first transmission cylinder 61 connected to the slide rod 524 and a second transmission cylinder 62 connected to the detection rod 534.

[0032] Furthermore, the first transmission cylinder 61 includes a first cylinder body 611 fixedly mounted on the first mounting plate 521, and a first sealing plate 612 slidably and sealingly connected to the inside of the first cylinder body 611. A first connecting shaft 613 is fixedly mounted on the first sealing plate 612. The first connecting shaft 613 extends to the outside of the first cylinder body 611 and is fixedly connected to the slide rod 524. The first sealing plate 612 can directly drive the slide rod 524 and the nozzle 525 to move through the first connecting shaft 613.

[0033] Furthermore, the second transmission cylinder 62 includes a second cylinder body 621 fixedly mounted on the second mounting plate 531, and a second sealing plate 622 slidably and sealingly connected inside the second cylinder body 621. A second connecting shaft 623 is fixedly mounted on the second sealing plate 622. The second connecting shaft 623 extends to the outside of the second cylinder body 621 and is fixedly connected to the detection rod 534. When the sample profile pushes the detection rod 534, the detection rod 534 pushes the second sealing plate 622 to slide inside the second cylinder body 621 through the second connecting shaft 623, thereby squeezing or extracting the transmission medium inside.

[0034] It should be noted that both ends of the first cylinder 611 and the second cylinder 621 are connected by pipes 63. The first cylinder 611, the second cylinder 621, and the pipes 63 are all filled with a transmission medium. The entire sealed system is filled with incompressible liquid. Any displacement of the detection rod 534 will cause a change in the volume of liquid in the second cylinder 621. This change is instantly transmitted to the first cylinder 611 through the pipes 63, forcing the first sealing plate 612 to produce an equal displacement, thereby driving the nozzle 525 to complete synchronous movement. It has the characteristics of smooth transmission, high precision, and the ability to amplify or maintain the displacement ratio, perfectly realizing the 1:1 following of the nozzle to the action of the detection rod.

[0035] In this embodiment, the number of adaptive spraying components 5 is set according to actual production needs. For example, for cast iron cookware such as woks and soup pots that require glazing on both the inner and outer surfaces, the number is determined according to the shape of the cookware and the opening direction during installation. If the opening direction is perpendicular to the horizontal plane, only one set of adaptive spraying components 5 is needed to complete the full coverage spraying. If the opening direction of the cookware is horizontal, two independent sets of adaptive spraying components 5 can be set along the conveying direction of the conveyor belt 2. The nozzle 525 array of the first set of adaptive spraying components 5 can be aligned with and track the outer surface contour of the workpiece, while the second set is aligned with the inner surface contour. By coordinating the timing of each feeding device, transmission mechanism 6 and rotary drive mechanism 4 through the control system, the workpiece can be sequentially or synchronously sprayed with high precision at a constant distance on its outer and inner surfaces in one pass, thereby truly achieving full glaze coverage of complex cookware products, effectively improving the integrity of the glazing process and increasing production efficiency.

[0036] In this embodiment, when the device is working, the cast iron kitchenware to be sprayed is fixed on the support base 31. The conveyor belt 2 drives the support frame 3 to move. When the support frame 3 enters the spraying station, the gear 42 on it meshes with the rack 43 fixed in the support box 1, thereby driving the transmission shaft 41 to rotate. Through the transmission of the second synchronous belt 45 and the first synchronous belt 44, all the support bases 31 and the workpieces on them begin to rotate synchronously. At the same time, the photoelectric sensor 551 of the position detection component 55 is triggered by the protrusion 552 on the support frame 3, starting the motor 543 and driving the rotating shaft 541 of the reference component 54 and the sample mounted on it to rotate synchronously. In the guide component 53, the ball 535 at one end of the detection rod 534, which is pushed by the elastic element, always closely contacts the rotating sample surface, thereby accurately converting the three-dimensional contour undulation of the sample into the detection rod 534 itself. The linear reciprocating motion is transmitted through the hydraulic transmission mechanism 6: the displacement of the detection rod 534 pushes the second sealing plate 622 inside the second transmission cylinder 62, squeezing the incompressible transmission medium in the sealed system. The medium transmits the pressure and displacement synchronously to the first transmission cylinder 61 through the pipe 63, pushing the first sealing plate 612 inside it. Finally, the first connecting shaft 613 drives the slide rod 524 and the nozzle 525 fixed on it to perform a completely synchronized forward and backward movement. Thus, the nozzle 525 can reproduce the position information obtained by the detection rod 534 from the sample in real time. During the entire spraying process, regardless of whether the workpiece surface is flat or curved, multiple nozzles 525 can always automatically maintain the optimal vertical distance from the rotating workpiece surface, realizing constant distance and vertical conformal spraying. The glaze is supplied to the nozzle 525 by an independent feeding device through the conveying pipe 526.

[0037] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A rotary automatic glazing device for cast iron kitchenware to prevent glaze dripping, comprising a support box (1) and a conveying belt (2) passing through the inside of the support box (1), a plurality of support frames (3) are installed on the conveying belt (2), a plurality of support seats (31) for supporting workpieces to be sprayed are rotatably installed on the support frames (3), characterized in that, Also includes: A rotary drive mechanism (4) installed in the support box (1) and support frame (3) to drive multiple support seats (31) to rotate synchronously; at least one set of adaptive spraying components (5) installed on one side of the support box (1), the adaptive spraying component (5) including a nozzle assembly (52), a guide assembly (53) and a reference assembly (54), the nozzle assembly (52) including multiple slidably arranged nozzles (525), the multiple nozzles (525) corresponding to different spraying positions, the axis of the nozzle (525) being perpendicular to the plane of the workpiece and perpendicular to the plane of the workpiece. The workpiece's arc surface tangent direction is perpendicular. The reference component (54) includes a sample with the same shape as the workpiece. The reference component (54) drives the sample to rotate synchronously with the sample on the support base (31). The guide component (53) includes a detection rod (534) that is slidably set and in contact with the sample, corresponding one-to-one with multiple nozzles (525) and parallel to the axis. A transmission mechanism (6) is installed between the corresponding nozzles (525) and the detection rod (534). The transmission mechanism (6) drives the nozzles (525) and the detection rod (534) to slide synchronously.

2. The rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 1, characterized in that, The rotary drive mechanism (4) includes a drive shaft (41) rotatably mounted inside the support frame (3), a gear (42) fixedly mounted on the drive shaft (41), and a rack (43) fixedly mounted inside the support box (1). A first synchronous belt (44) is connected between two adjacent support seats (31), and a second synchronous belt (45) is installed between the drive shaft (41) and one of the support seats (31).

3. The rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 1, characterized in that, The adaptive spraying component (5) further includes two bases (51). The nozzle assembly (52) includes a first mounting plate (521) fixedly mounted on one of the bases (51), multiple sets of first brackets (522) fixedly mounted on the first mounting plate (521), and a first support sleeve (523) fixedly mounted on the first brackets (522). A slide rod (524) is slidably mounted on the same set of first support sleeves (523). The nozzle (525) is fixedly connected to the slide rod (524).

4. The rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 1, characterized in that, A conveying pipe (526) is fixedly installed on the nozzle (525), and the other end of the conveying pipe (526) is connected to a feeding device.

5. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 3, characterized in that, The guide assembly (53) includes a second mounting plate (531) fixedly mounted on another base (51), multiple sets of second brackets (532) fixedly mounted on the second mounting plate (531), and a second support sleeve (533) fixedly mounted on the second brackets (532). The detection rod (534) is slidably mounted on the second support sleeve (533).

6. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 5, characterized in that, One end of the detection rod (534) is rotatably mounted with a ball bearing (535), and an elastic element is installed between the second mounting plate (531) and the detection rod (534).

7. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 1, characterized in that, The reference component (54) includes a rotating shaft (541) rotatably mounted on a support box (1) and a fastening seat (542) fixedly mounted on the rotating shaft (541). The sample is detachably connected to the fastening seat (542). A motor (543) is fixedly mounted on the support box (1). The output shaft of the motor (543) is coaxially fixedly connected to the rotating shaft (541). A position detection component (55) that determines the start-up time of the motor (543) is installed inside the support box (1). The position detection component (55) includes a photoelectric sensor (551) fixedly mounted inside the support box (1) and a protrusion (552) fixedly mounted on the support frame (3).

8. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 5, characterized in that, The transmission mechanism (6) includes a first transmission cylinder (61) connected to the slide rod (524) and a second transmission cylinder (62) connected to the detection rod (534); the first transmission cylinder (61) includes a first cylinder body (611) fixedly mounted on a first mounting plate (521) and a first sealing plate (612) slidably and sealingly connected to the inside of the first cylinder body (611), a first connecting shaft (613) fixedly mounted on the first sealing plate (612), and the first connecting shaft (613) extending to The first cylinder (611) is fixedly connected to the slide rod (524) on the outside; the second transmission cylinder (62) includes a second cylinder (621) fixedly mounted on the second mounting plate (531) and a second sealing plate (622) slidably and sealingly connected to the inside of the second cylinder (621). A second connecting shaft (623) is fixedly mounted on the second sealing plate (622). The second connecting shaft (623) extends to the outside of the second cylinder (621) and is fixedly connected to the detection rod (534).

9. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 8, characterized in that, Both ends of the first cylinder (611) and the second cylinder (621) are connected by a pipe (63), and the first cylinder (611), the second cylinder (621) and the pipe (63) are filled with a transmission medium.

10. A rotary automatic glazing spraying device for cast iron kitchenware to prevent glaze dripping according to claim 1, characterized in that, Support bodies (32) are fixedly installed on both sides of the support frame (3), and rollers (33) are rotatably installed inside the support body (32). A support seat (11) for supporting the rollers (33) is fixedly installed inside the support box (1).

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