A rotary porcelain insulator glazing device and a uniform glazing method thereof

Abstract

This invention discloses a rotary porcelain insulator glazing device and its uniform glazing method, comprising a glazing mechanism, a glazing supply mechanism, a suspension mechanism, and a glaze pre-drying mechanism. A top plate and a support ring plate form a racetrack-shaped track cavity. Multiple clamping frames are connected in series by closed-loop steel cables and slide cyclically along the track. The suspension mechanism suspends the support ring plate with a constant track gap to prevent jamming. The clamping frame blank clamping part is equipped with an independent drive rotation component, which can separately control the insulator blank's self-rotation and overall posture flipping. The blank's self-rotation ensures the glaze evenly coats the edges of the skirts, while the flipping and interchange of the blank's position eliminates glaze leakage in hidden areas. The combined motion quickly removes glaze bubbles, reducing pinhole defects on the glaze surface and actively driving the blank without friction-induced scratches. The transmission mechanism drives the frame for cyclic conveying, and the glazing supply mechanism circulates the glaze and recovers dripped glaze. After the blank is immersed in glaze and uniformly glazed, it immediately enters the downstream stepped heating pre-drying mechanism, which isolates airflow and quickly sets the glaze layer, preventing uneven glaze thickness.

Description

Technical Field

[0001] This invention relates to the field of ceramic products and electrical porcelain insulator manufacturing technology, specifically to a rotary porcelain insulator glazing equipment and its uniform glazing method. Background Technology

[0002] In the manufacturing process of high-voltage suspended ceramic insulators, the application of the surface glaze is one of the key steps that determines the product's appearance quality and electrical performance. The immersion glazing method is one of the most widely used glazing processes, which involves immersing the ceramic blank in a glaze slurry, allowing the slurry to naturally adhere to the surface of the blank and form a glaze layer.

[0003] To improve the uniformity of glaze adhesion, existing technologies include glazing devices that combine rotation and immersion. For example, patent application number CN118024387B discloses an insulator glazing device in which the insulator rotates continuously in the glaze liquid to improve the glazing effect, and the glazing component can stir the glaze liquid during the conveying process to improve the uniformity of the glaze liquid.

[0004] Chinese patent CN218647708U discloses a glazing device for insulator production. Through the cooperation of a large gear and a small gear, residual glaze on the surface of the insulator is removed after it leaves the glazing chamber, and then dried and shaped using a fan. Furthermore, Chinese patent CN110047632A discloses a flipping glazing device for insulators, which uses a rolling shaft and other structures to achieve the flipping and glazing of the insulators.

[0005] However, existing rotary glazing devices still have the following technical drawbacks: First, the rotational freedom is limited. In existing equipment, ceramic blanks typically rotate only around a single axis (vertical or horizontal) during the glazing process. For ceramic blanks with complex three-dimensional structures (such as the umbrella skirt structure of insulators, irregularly shaped ceramic products, etc.), rotation along a single axis makes it difficult to ensure that the glaze evenly covers all parts of the blank surface, especially in hidden areas such as depressions and edges, where uneven glazing or even glaze leakage is likely to occur.

[0006] Second, the limitations of flip-type glazing. Although some existing technologies adopt the concept of "flipping" (such as the "rolling shaft" in the patent application number CN110047632A), the flipping motion is achieved during the conveying process. The blank is not actively controlled multi-degree-of-freedom rotation during the flipping process, making it difficult to achieve precise glazing control. Moreover, the flipping motion of the blank is a passive flipping achieved by friction transmission between the helical drive shaft and the surface of the insulator during the conveying process. Relative sliding and friction occur between the insulator and the drive shaft, which can easily cause wear and scratches on the surface of the blank, affecting the quality of the insulator.

[0007] Third, air bubbles are difficult to completely expel during the glazing process. When the ceramic blank is immersed in the glaze, the complex shape of the surface easily traps air bubbles. Rotation in one direction is insufficient to completely expel air bubbles from all directions, and residual air bubbles can lead to pinhole defects on the glaze surface.

[0008] Therefore, there is an urgent need to develop a device and method that can achieve multi-degree-of-freedom rotational glazing to solve the technical problem of uneven glazing of complex-shaped ceramic blanks by existing single-axis rotation glazing equipment. Summary of the Invention

[0009] The main objective of this invention is to provide a rotary porcelain insulator glazing device and its uniform glazing method, aiming to solve the technical problems in the prior art where the ceramic blank rotates only around a single axis in the glazing device, resulting in uneven glazing on complex shaped surfaces and the inability of the glaze to evenly cover hidden areas.

[0010] To achieve the above objectives, the present invention proposes a rotary porcelain insulator glazing device, which includes a glazing mechanism, a glazing material supply mechanism for storing and supplying glaze liquid, a suspension mechanism, and a glaze pre-drying mechanism. The glazing mechanism includes a support column, a racetrack-shaped top plate, and a clamping frame. The top plate is horizontally mounted above the ground via the support column. Support ring plates are coaxially spaced on the outer side of the top plate. The inner contour of the support ring plates matches the outer contour of the top plate. The gap between the top plate and the support ring plates forms a racetrack-shaped track cavity that allows the clamping frame to slide and engage. The suspension mechanism is connected to the support ring plate and hangs and positions it, maintaining a constant track cavity gap size throughout the process, suppressing track cavity deformation caused by support ring plate offset and sagging, and ensuring smooth sliding of the clamping frame without jamming or derailment; The number of clamping frames is multiple, and the multiple clamping frames are evenly spaced and slidably engaged in the track cavity. Each clamping frame includes a sliding part and a blank clamping part. The sliding part is slidably engaged in the track cavity. The blank clamping part is located below the top plate and is fixedly connected to the bottom of the sliding part. The blank clamping part includes a blank clamp and a rotating assembly. The blank clamp is used to clamp the insulator blank, and the rotating assembly is an independent active drive structure that can synchronously drive the blank clamp to achieve rotation around its own axis and overall posture flipping. Each sliding part is connected in series end to end by the same closed-loop steel cable; the glazing mechanism also includes a transmission mechanism, which is used to drive the sliding parts to move along the track cavity; The glaze pre-drying mechanism is located downstream of the glazing process and is used to pre-dry the glaze surface of the insulator blank immediately after it has completed rotation and glazing.

[0011] Preferably, the sliding part includes a slide rod, which is vertically arranged inside the track cavity, with its upper and lower ends respectively extending out of the track cavity; The outer wall of the slide bar is provided with a first roller and a second roller symmetrically arranged. The first roller rolls on the top surface of the support ring plate, and the second roller rolls on the top surface of the top plate. The top surface of the support ring plate is provided with a first directional rail for the first roller to roll, and the top surface of the top plate is provided with a second directional rail for the second roller to roll. Both the first directional rail and the second directional rail are racetrack-shaped structures that are closed at the ends and connected. The outer circumferential rolling wall of the first roller is recessed with a first track groove that fits and matches the first limiting track, and the outer circumferential rolling wall of the second roller is recessed with a second track groove that fits and matches the second limiting track; The steel cable is installed at the top of the slide bar to connect each slide bar in a closed loop, and the spacing between multiple slide bars is equal; Each of the slide bars is provided with an anti-sway component, which includes brackets symmetrically arranged on both sides of the slide bar. The symmetry direction of the two brackets is consistent with the symmetry direction of the first roller and the second roller. Each bracket has at least two rolling balls rolling on it. The rolling ball located below the support ring plate is in contact with the support ring plate, and the rolling ball located below the top plate is in contact with the top plate.

[0012] Preferably, the rotating assembly includes a connecting rod and a flipping rotating rod, the connecting rod is vertically connected to the bottom end of the slide rod, and the outer wall of the connecting rod is connected to a supporting inclined rod that is inclined toward the side away from the supporting ring plate; The flipping rotating rod is arranged horizontally, and two rotating sleeves are rotatably connected to the outer wall of the flipping rotating rod at intervals. One rotating sleeve is connected to the end of the connecting rod away from the slide rod, and the other rotating sleeve is connected to the end of the supporting inclined rod away from the connecting rod. The extension direction of the flipping rotating rod is perpendicular to the outer wall of the top plate directly above it. The outer end of the rotating rod is provided with a hollow connecting block, and the outer wall of the inner end of the rotating rod is fitted with a first pulley. A first motor is provided below the rotating rod, and a second pulley is provided on the output shaft of the first motor. The second pulley is located directly below the first pulley, and the first pulley and the second pulley are connected by a transmission belt. The axis of the flipping rotating rod is rotatably connected to a first rotating shaft. One end of the first rotating shaft extends into the connecting block and is connected to a first bevel gear, while the other end extends out of the flipping transmission rod and is connected to a second motor for driving the first rotating shaft to rotate. The connecting block is symmetrically connected to a second rotating shaft on both sides. The extension direction of the second rotating shaft is perpendicular to the extension direction of the first rotating shaft. One end of each second rotating shaft that extends into the connecting block is connected to a second bevel gear for meshing with the first bevel gear. Each of the second rotating shafts is provided with a blank clamp at one end away from the connecting block; A rotating sealing ring is fitted on the outer wall of the rotating engagement point between the second rotating shaft and the connecting block.

[0013] Preferably, the embryo clamp includes an embryo rod detachably connected to the end of the second rotating shaft away from the connecting block, and an embryo support plate sleeved on the outer wall of the end of the second rotating shaft away from the connecting block. The embryo support plate and the embryo rod are provided with embryo support pins on the same side. The end of the embryo rod away from the connecting block is threadedly connected to a clamping block. The clamping block is a cone shape that gradually narrows towards the embryo rod.

[0014] Preferably, the suspension mechanism includes a vertically mounted support column above the top plate, with multiple radial booms distributed horizontally around the support column. The end of each boom opposite to the support column extends to the side of the support ring plate, and the end of each boom above the support ring plate is connected to the support ring plate by a sling. A cable connects the end of each boom opposite to the support column to the top of the support column.

[0015] Preferably, the glaze pre-drying mechanism is located on the lower outer side of the top plate and includes a C-shaped windproof cover; the opening of the C-shaped windproof cover faces upward toward the top plate, and the windproof cover extends along the conveying and moving direction of the clamping frame. The clamping frame and the travel path of the glazed workpiece are housed in the C-shaped inner cavity of the windproof cover, which can isolate external airflow from interfering with the glaze drying. A hollow rectangular air collection duct is fixed to the outer wall of the windproof cover. Multiple parallel air outlet branch pipes are connected to the side of the air collection duct facing the windproof cover. One end of each air outlet branch pipe is connected to the inner cavity of the air collection duct, and the other end passes through the wall of the windproof cover laterally, with the air outlet facing the clamping frame inside the inner cavity. Multiple independent hot air blowers are arranged at intervals along the extension direction above the windproof cover. The hot air outlet of each hot air blower is connected to the corresponding section of the main air collection pipe. Multiple hot air blowers form temperature zone segment control along the workpiece conveying direction. The hot air output temperature increases stepwise from the feeding side near the glaze pool to the discharging side away from the glaze pool.

[0016] Preferably, the direction of the glazing feeding mechanism toward the glaze pre-drying mechanism is the conveying direction of the clamping frame; a glaze pool for holding glaze liquid is provided below the conveying path of the clamping frame, a mud pump is installed at the bottom of the glaze pool, the outlet of the mud pump is connected to a slurry delivery pipe, and the outlet end of the slurry delivery pipe extends to the inside of the glaze pool opening; a receiving tray is provided below the glaze pool and near the air collection hood of the glaze pre-drying mechanism, the receiving tray is arranged below the conveying path of the clamping frame and extends along the conveying direction of the frame toward the air collection hood.

[0017] Preferably, the transmission mechanism includes a drive gear and a transmission disk rotatably mounted on the top surface of the top plate, a third motor with an output shaft passing through the top plate and connected to the drive gear is provided below the top plate, a driven gear is fixed above the transmission disk, and the drive gear and the driven gear are connected by a transmission chain; The outer edge of the transmission disc has several grooves evenly spaced around its circumference. Each groove runs through the entire thickness of the transmission disc, and the center distance between two adjacent grooves is exactly the same as the center distance between two adjacent sliding rods. During the rotation of the transmission disc, the sliding rods on the outer ring of the top plate can be inserted into the grooves in sequence. The circumferential transmission of the transmission disc is achieved through the engagement and cooperation between the sliding rods and the grooves.

[0018] Preferably, it also includes a power supply component for supplying power to each set of clamping frames. The power supply component includes two conductive copper rings disposed above the steel cable. Each conductive copper ring is arranged around the steel cable along its extension direction. The two conductive copper rings are spaced apart and insulated from each other. Each conductive copper ring is insulated from the steel cable. A current collector electrically connected to the two conductive copper rings is provided above the windproof cover.

[0019] This invention also proposes a method for uniformly glazing rotary porcelain insulators, using any one of the rotary porcelain insulator glazing equipment described above. The method for uniformly glazing rotary porcelain insulators includes the following steps: S1. Loading and clamping: Install the porcelain insulator blank to be glazed into the blank clamp, and lock the blank axially by rotating the conical clamping block. Use the blank support pins to contact the suspended blank to ensure that there is no large area of ​​obstruction around the blank. S2. Circular conveyor start: Start the third motor to drive the active gear and transmission chain to drive the driven gear and transmission disc to rotate synchronously. The groove on the outer periphery of the transmission disc engages the slide rod in sequence. With the help of the closed-loop steel cable, all the clamping frames are synchronously pulled to move at a constant speed along the racetrack-shaped track cavity. The suspension mechanism hangs the support ring plate throughout the process to keep the track cavity gap constant and prevent the slide rod from sliding, getting stuck, or derailing. S3. Glazing and Circulation: The clamping frame transports the blank to the glaze tank of the glazing feeding mechanism. The mud pump at the bottom of the glaze tank continuously circulates and agitates the glaze to prevent sedimentation. The rotating components control the first and second motors to work independently. The second motor drives the second shaft to rotate the insulator blank around its own axis, so that the glaze evenly covers the skirt and edges of the blank. The first motor drives the rotating rod to rotate the connecting block and the blank as a whole back and forth, changing the upper and lower postures of the blank, so that the hidden grooves and dead corners of the blank are completely immersed in the glaze. The combined motion of rotation and tumbling continuously discharges air bubbles trapped inside the glaze. The excess glaze dripping after the blank leaves the glaze tank is collected and recycled by the receiving tray below. S4. Online stepped pre-drying: The clamping frame carries the glazed blank into the inner cavity of the C-shaped windproof cover of the glaze pre-drying mechanism along the conveying direction. The multi-component segmented hot air blower heats the blank in a stepwise manner from the glaze pool side to the discharge side along the direction of the blank's movement. The hot air blows the glaze surface of the blank through the main air collection pipe and the branch air outlet pipe, evaporating the moisture in the glaze layer step by step, and quickly setting the glaze slurry to suppress glaze flow and uneven thickness defects. The windproof cover isolates the airflow in the workshop to ensure a stable drying temperature field. S5. Unloading and Removing Parts: The pre-dried and shaped blanks are returned to the loading station by the clamping frame. The conical clamping blocks are loosened in the opposite direction, and the glazed porcelain insulators are removed. The S1 to S4 processes are repeated to achieve continuous automated glazing operations.

[0020] In the technical solution of this invention, the blank clamping part is equipped with an independent rotating component, which can actively drive the blank clamp to achieve two sets of independent and controllable movements: axial rotation and overall flipping. This differs from existing equipment that only rotates a single axis or relies on friction transmission to achieve passive flipping. During blank rotation, the glaze is evenly spread around the insulator skirt, grooves, and edges. Combined with the overall flipping action, the postures of the upper and lower ends of the blank can be interchanged, allowing the concave and hidden areas of the blank to be fully immersed in the glaze, thus eliminating the problem of glaze leakage in the dead corners of the complex skirt structure, and ensuring that the glaze layer thickness is uniform throughout.

[0021] Multi-posture composite motion can continuously disturb the glaze bubbles trapped on the surface of the blank. Bubbles in all directions can quickly detach from the surface of the blank and float to the surface during rotation and tumbling, effectively suppressing pinholes and pores in the glaze, greatly improving the appearance quality and electrical insulation performance of the insulator, and solving the problem that existing unidirectional rotating bubbles cannot be completely discharged.

[0022] The rotating component has a built-in active drive structure, which does not rely on the friction between the blank and the drive shaft to drive the rotation. There is no risk of sliding friction or squeezing scratches on the blank surface, which completely protects the outer surface of the ceramic blank, reduces the product scrap rate, and overcomes the defects of existing rotating devices that damage the blank by friction.

[0023] After the blank is dipped in glaze and rotated to evenly distribute the glaze, it is immediately pre-dried by a glaze pre-drying mechanism to quickly reduce the surface fluidity of the glaze slurry and prevent the glaze from flowing downwards due to gravity during the blank removal and standing process, resulting in defects such as thick glaze at the bottom, thin glaze at the top, and glaze edge marks. This forms a closed-loop process with the pre-positioned multi-degree-of-freedom glazing structure. First, the glaze slurry is evenly spread through rotation and flipping, and then pre-dried to fix and lock in the color, providing double protection for a smooth and uniform glaze surface. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the clamping frame structure of the present invention; Figure 3This is a schematic diagram of the cross-sectional structure of the clamping frame and the glaze pre-drying mechanism of the present invention; Figure 4 This is a schematic diagram of the transmission disc structure of the present invention; Figure 5 This is a schematic diagram of the sliding part structure of the present invention; Figure 6 This is a schematic diagram of the blank clamping part structure of the present invention; Figure 7 This is a schematic diagram of the suspension mechanism structure of the present invention; Figure 8 For the present invention Figure 2 A magnified view of area A and a schematic diagram of the embryo fixture structure.

[0026] Explanation of icon numbers: 1. Glazing mechanism; 11. Top plate; 12. Support ring plate; 13. Slide rod; 14. First roller; 15. Second roller; 16. First directional rail; 17. Second directional rail; 18. Connecting rod; 19. Supporting diagonal rod; 110. Second motor; 111. First motor; 112. Tilting rotating rod; 113. First rotating shaft; 114. First pulley; 115. Second pulley; 116. Connecting block; 117. First bevel gear; 118. Second bevel gear; 119. Second rotating shaft; 120. Green body support plate; 121. Green body connecting rod; 122. Body support pin; 123. Clamping block; 124. Support; 125. Roller ball; 2. Glazing material supply mechanism; 21. Glaze tank; 22. Mud pump; 23. Slurry delivery pipe; 24. Receiving tray; 3. Suspension mechanism; 31. Support column; 32. Boom; 33. Cable; 34. Sling; 4. Glaze pre-drying mechanism; 41. Windproof cover; 42. Main air collection pipe; 43. Branch air outlet pipe; 44. Hot air blower; 5. Transmission mechanism; 51. Drive gear; 52. Driven gear; 53. Transmission disc; 53a. Groove; 54. Transmission chain; 6. Insulator body.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0033] This invention proposes a rotary porcelain insulator glazing device and a method for uniform glazing.

[0034] Please refer to Figures 1 to 8 The rotary porcelain insulator glazing equipment includes a glazing mechanism 1, a glazing material supply mechanism 2 for storing and supplying glaze liquid, a suspension mechanism 3, and a glaze pre-drying mechanism 4. The glazing mechanism 1 includes a support column 31, a racetrack-shaped top plate 11, and a clamping frame. The top plate 11 is horizontally mounted above the ground via the support column 31. Support ring plates 12 are coaxially spaced on the outer side of the top plate 11. The inner contour of the support ring plates 12 matches the outer contour of the top plate 11. The gap between the top plate 11 and the support ring plates 12 forms a racetrack-shaped track cavity that allows the clamping frame to slide and engage. The suspension mechanism 3 is connected to the support ring plate 12 and hangs and positions it, keeping the track cavity gap size constant throughout the process, suppressing the track cavity deformation caused by the offset and sagging of the support ring plate 12, and ensuring that the clamping frame slides smoothly without jamming or derailment; The number of clamping frames is multiple, and the multiple clamping frames are evenly spaced and slidably engaged in the track cavity. Each clamping frame includes a sliding part and a blank clamping part. The sliding part is slidably engaged in the track cavity. The blank clamping part is located below the top plate 11 and is fixedly connected to the bottom of the sliding part. The blank clamping part includes a blank clamp and a rotating assembly. The blank clamp is used to clamp the insulator blank, and the rotating assembly is an independent active drive structure that can synchronously drive the blank clamp to achieve rotation around its own axis and overall posture flipping. Each sliding part is connected end to end by the same closed-loop steel cable; the glazing mechanism 1 also includes a transmission mechanism 5, which is used to drive the sliding parts to move along the track cavity; The glaze pre-drying mechanism 4 is located downstream of the glazing process and is used to pre-dry the glaze surface of the insulator blank immediately after it has completed rotation and glazing.

[0035] In the technical solution of this invention, the blank clamping part is equipped with an independent rotating component, which can actively drive the blank clamp to achieve two sets of independent and controllable movements: axial rotation and overall flipping. This differs from existing equipment that only rotates a single axis or relies on friction transmission to achieve passive flipping. When the blank rotates, the glaze is evenly spread along the insulator skirt, groove 53a, and edges. Combined with the overall flipping action, the postures of the upper and lower ends of the blank can be interchanged, and the concave and hidden areas of the blank can be completely immersed in the glaze, eliminating the problem of glaze leakage in the dead corners of the complex skirt structure from the root, and ensuring that the glaze layer thickness is uniform throughout.

[0036] Multi-posture composite motion can continuously disturb the glaze bubbles trapped on the surface of the blank. Bubbles in all directions can quickly detach from the surface of the blank and float to the surface during rotation and tumbling, effectively suppressing pinholes and pores in the glaze, greatly improving the appearance quality and electrical insulation performance of the insulator, and solving the problem that existing unidirectional rotating bubbles cannot be completely discharged.

[0037] The rotating component has a built-in active drive structure, which does not rely on the friction between the blank and the drive shaft to drive the rotation. There is no risk of sliding friction or squeezing scratches on the blank surface, which completely protects the outer surface of the ceramic blank, reduces the product scrap rate, and overcomes the defects of existing rotating devices that damage the blank by friction.

[0038] After the blank is dipped in glaze and rotated to evenly distribute the glaze, it is immediately pre-dried by the glaze pre-drying mechanism 4 to quickly reduce the surface fluidity of the glaze slurry and prevent the glaze from flowing downwards due to gravity during the blank removal and standing process, resulting in defects such as thick glaze at the bottom, thin glaze at the top, and glaze edge marks. This forms a closed-loop process with the pre-positioned multi-degree-of-freedom glazing structure. First, the glaze slurry is evenly spread through rotation and flipping, and then pre-dried to fix and lock in the color, providing double protection for a smooth and uniform glaze surface.

[0039] Please refer to the appendix. Figure 2-35. The sliding part includes a slide rod 13, which is vertically arranged inside the track cavity, with its upper and lower ends respectively extending out of the track cavity; The outer wall of the slide bar 13 is provided with a first roller 14 and a second roller 15 symmetrically arranged. The first roller 14 rolls on the top surface of the support ring plate 12, and the second roller 15 rolls on the top surface of the top plate 11. The top surface of the support ring plate 12 is provided with a first directional rail 16 for the first roller 14 to roll, and the top surface of the top plate 11 is provided with a second directional rail 17 for the second roller 15 to roll. Both the first directional rail 16 and the second directional rail 17 are racetrack-shaped structures that are closed at the ends and connected. The outer circumferential rolling wall of the first roller 14 is recessed with a first track groove that fits and matches the first limiting track 16, and the outer circumferential rolling wall of the second roller 15 is recessed with a second track groove that fits and matches the second limiting track 17. The steel cable is set at the top of the slide bar 13 to connect each slide bar 13 in a closed loop, and the spacing between the multiple slide bars 13 is equal. Each of the slide bars 13 is provided with an anti-sway component, which includes a bracket 124 symmetrically arranged on both sides of the slide bar 13. The symmetry direction of the two brackets 124 is consistent with the symmetry direction of the first roller 14 and the second roller 15. At least two balls 125 are rolled on each bracket 124. The ball 125 located below the support ring plate 12 is in contact with the support ring plate 12, and the ball 125 located below the top plate 11 is in contact with the top plate 11.

[0040] By utilizing the interlocking of the outer circumferential track groove of the roller with the racetrack-shaped directional limiting track, the rolling trajectory of the roller can be restricted, while simultaneously forming a circumferential locking and anti-rotation effect on the slide rod 13. This effectively prevents the slide rod 13 from rotating within the track cavity, ensuring that the preform fixture maintains an outward orientation throughout the entire process. The double-roller, double-track, double-sided guide support structure improves the sliding stability of the slide rod 13, preventing sliding deviation and jamming. Combined with the closed-loop racetrack, it enables stable circular cyclic transport of the preform fixture. When the slide rod 13 slides within the track groove, the rolling balls 125 on the two supports 124 abut against the support ring plate 12 and the top plate 11, respectively, so that the two rollers of the two side rolling balls 125 combine to form a stable triangle, thereby preventing the slide rod 13 from wobbling during movement.

[0041] Please refer to the appendix. Figure 2-3 6. The rotating assembly includes a connecting rod 18 and a flipping rotating rod 112. The connecting rod 18 is vertically connected to the bottom end of the slide rod 13. The outer wall of the connecting rod 18 is connected to a supporting inclined rod 19 that is inclined toward the side away from the supporting ring plate 12. The flipping rotating rod 112 is arranged horizontally, and two rotating sleeves are rotatably connected to the outer wall of the flipping rotating rod 112 at intervals. One rotating sleeve is connected to the end of the connecting rod 18 away from the slide rod 13, and the other rotating sleeve is connected to the end of the supporting inclined rod 19 away from the connecting rod 18. The extension direction of the flipping rotating rod 112 is perpendicular to the outer wall of the top plate 11 located directly above it; The flipping rotating rod 112 has a hollow connecting block 116 at one of its outward-facing ends, and a first pulley 114 is sleeved on the outer wall of the inward-facing end of the flipping rotating rod 112. A first motor 111 is located below the flipping rotating rod 112, and a second pulley 115 is located on the output shaft of the first motor 111. The second pulley 115 is located directly below the first pulley 114, and the first pulley 114 and the second pulley 115 are connected by a transmission belt. The axis of the flipping rotating rod 112 is rotatably connected to the first rotating shaft 113. One end of the first rotating shaft 113 extends into the connecting block 116 and is connected to the first bevel gear 117, while the other end extends out of the flipping transmission rod and is connected to the second motor 110 for driving the first rotating shaft 113 to rotate. The connecting block 116 is symmetrically connected to the second rotating shaft 119 on both sides. The extension direction of the second rotating shaft 119 is perpendicular to the extension direction of the first rotating shaft 113. One end of each second rotating shaft 119 that extends into the connecting block 116 is connected to a second bevel gear 118 for meshing with the first bevel gear 117. Each of the second rotating shafts 119 is provided with a blank clamp at one end opposite to the connecting block 116; A rotating sealing ring is fitted on the outer wall of the rotating engagement point between the second rotating shaft 119 and the connecting block 116.

[0042] The second motor 110 independently controls the rotation speed and duration of the blank's own axis; the first motor 111 independently controls the overall flipping angle and flipping rate. The two sets of motion parameters can be matched separately according to different specifications of insulators (large umbrella skirt / deep groove 53a / long cylindrical type), adapting to flexible production of multiple models and having strong versatility.

[0043] Through the 90° reversing transmission of the first bevel gear 117 and the second bevel gear 118, the power of the horizontally arranged first rotating shaft 113 is converted into the rotational power of the transverse second rotating shaft 119. There is no need for an external large reversing reducer. The overall component is small in size, fits the narrow installation space under the track cavity, and will not interfere with the movement path of the billet.

[0044] The connecting rod 18, the supporting diagonal rod 19, and the flipping rotating rod 112 together form a triangular truss support structure, which greatly improves the bending resistance of the flipping rotating rod 112. When the fully loaded insulator blank is flipped, the rod is not easy to bend or shake. The transmission gap is small and the flipping positioning is accurate.

[0045] A rotating sealing ring is installed at the rotation position of the second rotating shaft 119 and the connecting block 116. This prevents splashed glaze and workshop moisture from entering the meshing area of ​​the internal bevel gear, thus avoiding gear corrosion and glaze slurry clumping that could obstruct the transmission and reduce the frequency of equipment maintenance.

[0046] Both the first and second motors 110 use belt drives to transmit torque. Compared with hard-connected gear drives, this can buffer the impact load during the start-stop of the billet rotation, reduce the risk of instantaneous motor overload, extend the service life of the motor, and reduce operating noise.

[0047] The connecting rod 18 is equipped with a distance sensor to collect the distance between the connecting rod 18 and the liquid surface / body of the glaze pool 21 in real time. When the sensor detects that the distance between the connecting rod 18 and the glaze pool 21 is less than the preset safety threshold, the controller automatically sends a signal to drive the first motor 111 to drive the rotating rod 112 to rotate, adjusting the two symmetrically arranged second rotating shafts 119 to a horizontal extension state, so that the insulator blank is kept in a horizontal posture and steadily immersed into the glaze pool 21 to complete the glazing. After the blank is glazed, it moves outward along with the frame. After the distance sensor detects that the distance has returned to a value greater than the preset value, the first motor 111 is controlled again to finely adjust the rotating rod 112 to maintain the horizontal posture of the second rotating shafts 119, so that the blank is horizontally lifted and removed from the glaze pool 21.

[0048] The blank is horizontally immersed into and lifted out of the glaze pool 21 to avoid large-area splashing of glaze and contamination of the equipment caused by tilting the blank. At the same time, it prevents the insulator skirt from contacting the pool wall of the glaze pool 21 on one side first, causing collision damage. The blank is horizontally immersed in the glaze throughout the process, and the skirt and the upper and lower end faces are simultaneously wetted. There will be no problem of local glaze leakage caused by insufficient immersion on one side, which further ensures the uniformity of the glaze layer.

[0049] Please refer to the appendix. Figure 8 The embryo clamp includes an embryo guide rod 121 detachably connected to one end of the second rotating shaft 119 away from the connecting block 116, and an embryo support plate 120 sleeved on the outer wall of one end of the second rotating shaft 119 away from the connecting block 116. The embryo support plate 120 and the embryo guide rod 121 are provided with embryo support nails 122 on the same side. The end of the embryo guide rod 121 away from the connecting block 116 is threadedly connected to a clamping block 123. The clamping block 123 is a cone shape that gradually shrinks towards the embryo guide rod 121.

[0050] The blank holder rod 121 is used to string the insulator blanks 6. The detachable blank holder rod 121 can be replaced with the appropriate length according to the different lengths of different batches of insulators. The blank holder support nail 122 is used to support and suspend the blank, preventing the side of the blank near the blank holder support plate 120 from making large-area contact with the blank holder support plate 120, thereby affecting the glazing area of ​​the blank. The conical clamping block 123 can gradually clamp the insulator blank 6 during the screw rotation process, and greatly reduce the contact area between the insulator blank 6 and the clamping block 123.

[0051] Please refer to the appendix. Figure 1 and 7 The suspension mechanism 3 includes a column 31 vertically arranged above the top plate 11. Multiple radial arms 32 are horizontally distributed around the column 31. The end of each arm 32 away from the column 31 extends to the side of the support ring plate 12 and the end of each arm 32 above the support ring plate 12 is connected to the support ring plate 12 by a cable 34. A cable 33 is connected between the end of each arm 32 away from the column 31 and the top of the column 31. The suspension mechanism 3 also includes an n-shaped connecting block 116 for connecting the support ring plate 12 and the top plate 11. The height of the connecting block 116 is higher than the end of the slide rod 13 that extends upward into the track groove, and it can pass through the underside of the n-shaped opening.

[0052] The central support column 31 is surrounded by radial booms 32. Each boom 32 is independently suspended from the side of the support ring plate 12 by a sling 34. The support ring plate 12, track cavity and clamping frame are all supported by multiple points to avoid local sinking and twisting of the ring plate caused by single point bearing.

[0053] Each boom 32 is connected to the top of the support column 31 by a cable 33. The boom 32, cable 33 and central support column 31 form a triangular force system to counteract the cantilever bending moment of the boom 32, prevent the boom 32 from bending downward under long-term load, maintain the track cavity gap size continuously and constantly, and ensure the long-term stable operation of the conveying mechanism.

[0054] All the loads of the boom 32 are concentrated on the top support 31 and transmitted to the top plate 11. The suspension system has high overall rigidity, and the vibrations generated by the equipment transmission and billet turnover can be quickly dispersed and dissipated. The support ring plate 12 will not resonate and shake with the operation of the equipment.

[0055] Each boom 32, sling 34, and cable 33 is assembled independently, so there is no need to disassemble the entire suspension system for later maintenance and replacement of sling 34 and boom 32, making maintenance convenient. The suspension mechanism 3 also includes several N-shaped connecting blocks 116 for connecting the support ring plate 12 and the top plate 11. The connecting blocks 116 are straddling the track cavity, and their vertical height is greater than the height of the end of the slide rod 13 extending upward into the track groove, so that the slide rod 13 can pass through the lower opening of the N-shaped connecting block 116 when it slides cyclically with the clamping frame.

[0056] Please refer to the appendix. Figure 1 and 3 The glaze pre-drying mechanism 4 is located on the lower outer side of the top plate 11 and includes a C-shaped windproof cover 41. The opening of the C-shaped windproof cover 41 faces upward toward the top plate 11, and the windproof cover 41 extends along the conveying and moving direction of the clamping frame. The clamping frame and the glazed workpiece travel path are housed in the C-shaped inner cavity of the windproof cover 41, which can isolate external airflow from interfering with the glaze drying. A hollow rectangular air collection pipe 42 is fixed on the outer wall of the windproof cover 41. Multiple parallel air outlet branch pipes 43 are connected to the side of the air collection pipe 42 facing the windproof cover 41. One end of each air outlet branch pipe 43 is connected to the inner cavity of the air collection pipe 42, and the other end passes through the wall of the windproof cover 41 laterally, with the air outlet facing the clamping frame inside the inner cavity. Multiple independent hot air blowers 44 are arranged at intervals in the extension direction above the windproof cover 41. The hot air outlet of each hot air blower 44 is connected to the corresponding section of the main air collection pipe 42. The multiple hot air blowers 44 form a temperature zone segment control along the workpiece conveying direction. From the feeding side near the glaze pool 21 to the discharging side away from the glaze pool 21, the hot air output temperature increases stepwise.

[0057] The segmented, stepped heating allows the freshly glazed workpiece to first undergo slow evaporation of surface moisture in a low-temperature zone, and then gradually increase the temperature to dry the deeper glaze. This avoids defects such as blistering, cracking, and glaze run-off caused by direct high-temperature drying in a single process. The C-type enclosed windproof cover 41 isolates the through-draft in the workshop, ensuring stable circulation of hot air in each temperature zone and significantly improving drying uniformity. The side-mounted air collection pipe, combined with densely distributed branch pipes, provides airflow throughout the entire area, ensuring that the workpiece is heated from all angles.

[0058] Please refer to the appendix. Figure 1-2 The direction of the glazing feeding mechanism 2 toward the glaze pre-drying mechanism 4 is the conveying direction of the clamping frame; a glaze pool 21 for holding glaze liquid is provided below the conveying path of the clamping frame, a mud pump 22 is installed at the bottom of the glaze pool 21, the outlet of the mud pump 22 is connected to the slurry delivery pipe 23, and the outlet end of the slurry delivery pipe 23 extends to the inside of the pool opening of the glaze pool 21; a receiving tray 24 is provided below the glaze pool 21 and on the side near the air collecting hood of the glaze pre-drying mechanism 4, the receiving tray 24 is arranged below the conveying path of the clamping frame and extends along the conveying direction of the frame toward the air collecting hood.

[0059] The mud pump 22 at the bottom of the glaze tank 21 continuously draws out the glaze liquid and returns it from the inside of the tank opening. The glaze liquid is dynamically circulated and stirred throughout the process, so that heavy glaze particles will not settle to the bottom of the tank. The glaze liquid concentration is uniform throughout the entire range, ensuring that the glaze thickness of each batch of blanks is consistent and avoiding the difference in glaze layer thickness and color between workpieces.

[0060] Please refer to the appendix. Figure 1 and 4 The transmission mechanism 5 includes a drive gear 51 and a transmission disk 53 rotatably mounted on the top surface of the top plate 11. A third motor with an output shaft passing through the top plate 11 and connected to the drive gear 51 is provided below the top plate 11. A driven gear 52 is fixed above the transmission disk 53. The drive gear 51 and the driven gear 52 are connected by a transmission chain 54. The outer edge of the transmission disk 53 is provided with a number of grooves 53a evenly spaced along the circumference. Each groove 53a is completely inserted vertically along the thickness direction of the transmission disk 53. The center distance between two adjacent grooves 53a is exactly the same as the center distance between two adjacent slide rods 13. During the rotation of the transmission disk 53, the slide rods 13 on the outer ring of the top plate 11 can be inserted into the grooves 53a in sequence. The circumferential transmission of the transmission disk 53 is realized through the engagement and cooperation between the slide rods 13 and the grooves 53a.

[0061] Since the multiple sliding rods 13 are connected in a closed loop by steel cables, when the transmission disc 53 drives any one sliding rod 13 to slide in the track cavity, it can simultaneously drive the remaining sliding rods 13 to slide in the same direction in the track cavity. The center distance between the circumferential grooves 53a of the transmission disc 53 is exactly equal to the distance between the sliding rods 13. When the transmission disc 53 rotates, the grooves 53a can be inserted into the sliding rods 13 one by one in sequence, continuously driving all the closed-loop connected sliding rods 13 to move synchronously along the track cavity.

[0062] Please refer to the appendix. Figure 1 It also includes a power supply component for supplying power to each set of clamping frames. The power supply component includes two conductive copper rings disposed above the steel cable. Each conductive copper ring is arranged around the steel cable along the extension direction of the steel cable. The two conductive copper rings are spaced apart and insulated. Each conductive copper ring is insulated from the steel cable. A current collector electrically connected to the two conductive copper rings is provided above the windproof cover 41.

[0063] Two conductive copper rings are arranged in a ring along the track and continuously supply power as the clamping frame moves in a cycle. The two conductive copper rings are insulated from each other and isolated from the steel cable. One is connected to the live wire and the other is connected to the neutral wire. Through the current collector, stable power is continuously supplied to the first and second motors 110 of each clamping frame. All rotating components are powered synchronously.

[0064] This invention also proposes a method for uniformly glazing rotary porcelain insulators, using any one of the rotary porcelain insulator glazing equipment described above. The method for uniformly glazing rotary porcelain insulators includes the following steps: S1. Loading and clamping: The porcelain insulator blank to be glazed is installed in the blank clamp. The blank is axially locked by rotating the conical clamping block 123. The blank is supported by the blank support pin 122, ensuring that there is no large area of ​​obstruction around the blank. S2, Circular conveyor start: Start the third motor to drive the active gear 51 and the transmission chain 54 to drive the driven gear 52 and the transmission disc 53 to rotate synchronously. The outer circumferential groove 53a of the transmission disc 53 sequentially engages the slide rod 13. With the help of the closed-loop steel cable, the entire clamping frame is synchronously pulled to move along the racetrack-shaped track cavity at a uniform speed. The suspension mechanism 3 suspends the support ring plate 12 throughout the entire process to keep the track cavity gap constant and prevent the slide rod 13 from sliding, jamming, or derailing. S3. Glazing and Circulation: The clamping frame transports the blank to the glaze pool 21 of the glazing feeding mechanism 2. The mud pump 22 at the bottom of the glaze pool 21 continuously circulates and agitates the glaze to prevent sedimentation. The rotating components control the first motor 111 and the second motor 110 to work independently. The second motor 110 drives the second rotating shaft 119 to rotate the insulator blank around its own axis, so that the glaze evenly covers the skirt and edges of the blank. The first motor 111 drives the flipping rotating rod 112 to drive the connecting block 116 and the blank to flip back and forth, changing the upper and lower postures of the blank, so that the hidden groove 53a and the dead corner of the lower edge of the skirt of the blank are completely immersed in the glaze. The combined motion of rotation and flipping continuously discharges the air bubbles trapped inside the glaze. The excess glaze dripping after the blank leaves the glaze pool 21 is collected and recycled by the receiving tray 24 below. S4. Online stepped pre-drying: The clamping frame carries the glazed blank into the inner cavity of the C-shaped windproof cover 41 of the glaze pre-drying mechanism 4 along the conveying direction. The multi-component segmented hot air blower 44 heats the blank from the side of the glaze pool 21 to the discharge side in a stepped manner along the blank's travel direction. The hot air is blown all over the glaze surface of the blank through the main air collection pipe 42 and the branch air outlet pipe 43, evaporating the moisture in the glaze layer step by step, and quickly setting the glaze slurry to suppress glaze flow and uneven thickness defects. The windproof cover 41 isolates the airflow in the workshop to ensure a stable drying temperature field. S5. Unloading and Removing Parts: The pre-dried and shaped blanks are returned to the loading station by the clamping frame. The conical clamping block 123 is loosened in the reverse direction, and the glazed porcelain insulator is removed. The S1 to S4 processes are repeated to achieve continuous automated glazing operation.

[0065] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A rotary porcelain insulator glazing device, characterized in that, It includes a glazing mechanism, a glazing supply mechanism for storing and supplying glaze liquid, a suspension mechanism, and a glaze pre-drying mechanism; The glazing mechanism includes a support column, a racetrack-shaped top plate, and a clamping frame. The top plate is horizontally mounted above the ground via the support column. Support ring plates are coaxially spaced on the outer side of the top plate. The inner contour of the support ring plates matches the outer contour of the top plate. The gap between the top plate and the support ring plates forms a racetrack-shaped track cavity that allows the clamping frame to slide and engage. The suspension mechanism is connected to the support ring plate and hangs and positions it, maintaining a constant track cavity gap size throughout the process, suppressing track cavity deformation caused by support ring plate offset and sagging, and ensuring smooth sliding of the clamping frame without jamming or derailment; The number of clamping frames is multiple, and the multiple clamping frames are evenly spaced and slidably engaged in the track cavity. Each clamping frame includes a sliding part and a blank clamping part. The sliding part is slidably engaged in the track cavity. The blank clamping part is located below the top plate and is fixedly connected to the bottom of the sliding part. The blank clamping part includes a blank clamp and a rotating assembly. The blank clamp is used to clamp the insulator blank, and the rotating assembly is an independent active drive structure that can synchronously drive the blank clamp to achieve rotation around its own axis and overall posture flipping. Each sliding part is connected in series end to end by the same closed-loop steel cable; the glazing mechanism also includes a transmission mechanism, which is used to drive the sliding parts to move along the track cavity; The glaze pre-drying mechanism is located downstream of the glazing process and is used to pre-dry the glaze surface of the insulator blank immediately after it has completed rotation and glazing.

2. The rotary porcelain insulator glazing equipment according to claim 1, characterized in that, The sliding part includes a slide rod, which is vertically arranged inside the track cavity, with its upper and lower ends extending out of the track cavity respectively; The outer wall of the slide bar is provided with a first roller and a second roller symmetrically arranged. The first roller rolls on the top surface of the support ring plate, and the second roller rolls on the top surface of the top plate. The top surface of the support ring plate is provided with a first directional rail for the first roller to roll, and the top surface of the top plate is provided with a second directional rail for the second roller to roll. Both the first directional rail and the second directional rail are racetrack-shaped structures that are closed at the ends and connected. The outer circumferential rolling wall of the first roller is recessed with a first track groove that fits and matches the first limiting track, and the outer circumferential rolling wall of the second roller is recessed with a second track groove that fits and matches the second limiting track; The steel cable is installed at the top of the slide bar to connect each slide bar in a closed loop, and the spacing between multiple slide bars is equal; Each of the slide bars is provided with an anti-sway component, which includes brackets symmetrically arranged on both sides of the slide bar. The symmetry direction of the two brackets is consistent with the symmetry direction of the first roller and the second roller. Each bracket has at least two rolling balls rolling on it. The rolling ball located below the support ring plate is in contact with the support ring plate, and the rolling ball located below the top plate is in contact with the top plate.

3. The rotary porcelain insulator glazing equipment according to claim 2, characterized in that, The rotating assembly includes a connecting rod and a flipping rotating rod. The connecting rod is vertically connected to the bottom end of the sliding rod, and a supporting inclined rod inclined toward the side away from the supporting ring plate is connected to the outer wall of the connecting rod. The flipping rotating rod is arranged horizontally, and two rotating sleeves are rotatably connected to the outer wall of the flipping rotating rod at intervals. One rotating sleeve is connected to the end of the connecting rod away from the slide rod, and the other rotating sleeve is connected to the end of the supporting inclined rod away from the connecting rod. The extension direction of the flipping rotating rod is perpendicular to the outer wall of the top plate directly above it. The outer end of the rotating rod is provided with a hollow connecting block, and the outer wall of the inner end of the rotating rod is fitted with a first pulley. A first motor is provided below the rotating rod, and a second pulley is provided on the output shaft of the first motor. The second pulley is located directly below the first pulley, and the first pulley and the second pulley are connected by a transmission belt. The axis of the flipping rotating rod is rotatably connected to a first rotating shaft. One end of the first rotating shaft extends into the connecting block and is connected to a first bevel gear, while the other end extends out of the flipping transmission rod and is connected to a second motor for driving the first rotating shaft to rotate. The connecting block is symmetrically connected to a second rotating shaft on both sides. The extension direction of the second rotating shaft is perpendicular to the extension direction of the first rotating shaft. One end of each second rotating shaft that extends into the connecting block is connected to a second bevel gear for meshing with the first bevel gear. Each of the second rotating shafts is provided with a blank clamp at one end away from the connecting block; A rotating sealing ring is fitted on the outer wall of the rotating engagement point between the second rotating shaft and the connecting block.

4. The rotary porcelain insulator glazing equipment according to claim 3, characterized in that, The embryo clamp includes an embryo rod detachably connected to one end of the second rotating shaft away from the connecting block, and an embryo support plate sleeved on the outer wall of the end of the second rotating shaft away from the connecting block. The embryo support plate and the embryo rod are provided with embryo support pins on the same side. The end of the embryo rod away from the connecting block is threadedly connected to a clamping block. The clamping block is a cone shape that gradually narrows towards the embryo rod.

5. The rotary porcelain insulator glazing equipment according to claim 1, characterized in that, The suspension mechanism includes a vertically mounted support column above the top plate, with multiple radial booms distributed horizontally around the support column. The end of each boom opposite to the support column extends to the side of the support ring plate, and the end of each boom above the support ring plate is connected to the support ring plate by a sling. A cable connects the end of each boom opposite to the support column to the top of the support column.

6. The rotary porcelain insulator glazing equipment according to claim 1, characterized in that, The glaze pre-drying mechanism is located on the lower outer side of the top plate and includes a C-shaped windproof cover. The opening of the C-shaped windproof cover faces upward toward the top plate, and the windproof cover extends along the conveying and moving direction of the clamping frame. The clamping frame and the glazed workpiece travel path are housed in the C-shaped inner cavity of the windproof cover, which can isolate external airflow from interfering with the glaze drying. A hollow rectangular air collection duct is fixed to the outer wall of the windproof cover. Multiple parallel air outlet branch pipes are connected to the side of the air collection duct facing the windproof cover. One end of each air outlet branch pipe is connected to the inner cavity of the air collection duct, and the other end passes through the wall of the windproof cover laterally, with the air outlet facing the clamping frame inside the inner cavity. Multiple independent hot air blowers are arranged at intervals along the extension direction above the windproof cover. The hot air outlet of each hot air blower is connected to the corresponding section of the main air collection pipe. Multiple hot air blowers form temperature zone segment control along the workpiece conveying direction. The hot air output temperature increases stepwise from the feeding side near the glaze pool to the discharging side away from the glaze pool.

7. The rotary porcelain insulator glazing equipment according to claim 6, characterized in that, The direction of the glazing feeding mechanism toward the glaze pre-drying mechanism is the conveying direction of the clamping frame; a glaze pool for holding glaze liquid is provided below the conveying path of the clamping frame, a mud pump is installed at the bottom of the glaze pool, the outlet of the mud pump is connected to a slurry delivery pipe, and the outlet end of the slurry delivery pipe extends to the inside of the glaze pool opening; a receiving tray is provided below the glaze pool and near the air collection hood of the glaze pre-drying mechanism, the receiving tray is arranged below the conveying path of the clamping frame and extends along the conveying direction of the frame toward the air collection hood.

8. The rotary porcelain insulator glazing equipment according to claim 2, characterized in that, The transmission mechanism includes a drive gear and a transmission disk rotatably mounted on the top surface of the top plate. A third motor with an output shaft passing through the top plate and connected to the drive gear is provided below the top plate. A driven gear is fixed above the transmission disk. The drive gear and the driven gear are connected by a transmission chain. The outer edge of the transmission disc has several grooves evenly spaced around its circumference. Each groove runs through the entire thickness of the transmission disc, and the center distance between two adjacent grooves is exactly the same as the center distance between two adjacent sliding rods. During the rotation of the transmission disc, the sliding rods on the outer ring of the top plate can be inserted into the grooves in sequence. The circumferential transmission of the transmission disc is achieved through the engagement and cooperation between the sliding rods and the grooves.

9. The rotary porcelain insulator glazing equipment according to claim 6, characterized in that, It also includes a power supply component for supplying power to each set of clamping frames. The power supply component includes two conductive copper rings disposed above the steel cable. Each conductive copper ring is arranged around the steel cable along its extension direction. The two conductive copper rings are spaced apart and insulated from each other. Each conductive copper ring is insulated from the steel cable. A current collector electrically connected to the two conductive copper rings is provided above the windproof cover.

10. A method for uniformly glazing a rotary porcelain insulator, characterized in that, Using the rotary porcelain insulator glazing equipment according to any one of claims 1-9, the method for uniformly glazing the rotary porcelain insulator includes the following steps: S1. Loading and clamping: Install the porcelain insulator blank to be glazed into the blank clamp, and lock the blank axially by rotating the conical clamping block. Use the blank support pins to contact the suspended blank to ensure that there is no large area of ​​obstruction around the blank. S2. Circular conveyor start: Start the third motor to drive the active gear and transmission chain to drive the driven gear and transmission disc to rotate synchronously. The groove on the outer periphery of the transmission disc engages the slide rod in sequence. With the help of the closed-loop steel cable, all the clamping frames are synchronously pulled to move at a constant speed along the racetrack-shaped track cavity. The suspension mechanism hangs the support ring plate throughout the process to keep the track cavity gap constant and prevent the slide rod from sliding, getting stuck, or derailing. S3. Glazing and Circulation: The clamping frame transports the blank to the glaze tank of the glazing feeding mechanism. The mud pump at the bottom of the glaze tank continuously circulates and agitates the glaze to prevent sedimentation. The rotating components control the first and second motors to work independently. The second motor drives the second shaft to rotate the insulator blank around its own axis, so that the glaze evenly covers the skirt and edges of the blank. The first motor drives the rotating rod to rotate the connecting block and the blank as a whole back and forth, changing the upper and lower postures of the blank, so that the hidden grooves and dead corners of the blank are completely immersed in the glaze. The combined motion of rotation and tumbling continuously discharges air bubbles trapped inside the glaze. The excess glaze dripping after the blank leaves the glaze tank is collected and recycled by the receiving tray below. S4. Online stepped pre-drying: The clamping frame carries the glazed blank into the inner cavity of the C-shaped windproof cover of the glaze pre-drying mechanism along the conveying direction. The multi-component segmented hot air blower heats the blank in a stepwise manner from the glaze pool side to the discharge side along the direction of the blank's movement. The hot air blows the glaze surface of the blank through the main air collection pipe and the branch air outlet pipe, evaporating the moisture in the glaze layer step by step, and quickly setting the glaze slurry to suppress glaze flow and uneven thickness defects. The windproof cover isolates the airflow in the workshop to ensure a stable drying temperature field. S5. Unloading and Removing Parts: The pre-dried and shaped blanks are returned to the loading station by the clamping frame. The conical clamping blocks are loosened in the opposite direction, and the glazed porcelain insulators are removed. The S1 to S4 processes are repeated to achieve continuous automated glazing operations.

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