An apparatus for spraying the outer surface of an aluminum hose

Abstract

The application relates to the field of aluminum hose spraying technology, and discloses aluminum hose outer surface spraying treatment equipment, which comprises an electrostatic spraying room and a conveying chain, the conveying chain passes through the top of the electrostatic spraying room, the bottom of the conveying chain is fixedly connected with a connecting lug, an aluminum pipe mounting module for mounting aluminum pipes is arranged below the connecting lug, the aluminum pipe mounting module comprises a mounting frame fixed below the connecting lug, rotating rods are rotationally connected between the inner walls on the two sides of the bottom end of the mounting frame, supporting rods are rotationally connected to the top of the rotating rods through damping bearings, and conical tables for straightening the aluminum pipes are welded to the top of the supporting rods, the electrostatic spraying room is used in cooperation with multiple components, simple mechanical mechanisms are used to realize the integration of multiple functions such as support, straightening, anti-bending transportation and uniform spraying of the aluminum pipes, the complex transmission components and independent mechanisms in traditional equipment are reduced, and the overall failure rate and maintenance cost of the equipment are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the field of aluminum hose spraying technology, and particularly relates to an aluminum hose outer surface spraying treatment equipment. BACKGROUND

[0002] The hardness grade of aluminum pipes is mainly divided into six grades, and the aluminum pipe with the lowest grade is made of industrial pure aluminum and has soft hardness, which belongs to one kind of aluminum hose.

[0003] Some aluminum hoses need to be subjected to special spraying treatment on the outer surface in order to improve the service life of the aluminum pipes in a high-humidity, acid-alkali or salt-mist environment for a long time, and the aluminum pipes are usually sprayed by using an electrostatic spraying mode.

[0004] At present, the common electrostatic spraying equipment on the market, especially the electrostatic spraying equipment on the automatic assembly line, directly suspends the aluminum pipe on a hook in a suspension mode, and the aluminum pipe directly suspended on the hook has the following problems:

[0005] 1. The length of part of the aluminum pipes is relatively long, and the aluminum pipes are very easy to be bent in the process of turning on the assembly line due to the soft hardness of the aluminum pipes, the bent aluminum pipes are difficult to recover, the aluminum pipes are very easy to be displaced in the whole assembly line, and thus the spraying operation of the aluminum pipes is affected, and the processing efficiency of the factory is affected;

[0006] 2. When the bent aluminum pipe is driven to move on the hook, the shaking during the movement will cause the bent aluminum pipe to be turned over, the position of the aluminum pipe is changed, the aluminum pipe is difficult to enter the electrostatic spraying room, additional tools need to be used to straighten the aluminum pipe, the equipment used for processing the aluminum pipe is excessive, and thus the investment cost of the factory is increased;

[0007] 3. During the spraying of the aluminum pipe, the aluminum pipe is static, and the spraying gun is arranged on one side, the hook shields the part in contact with the aluminum pipe, the outer surface of the aluminum pipe is not uniformly sprayed, and thus the qualified rate of the aluminum pipe is affected. SUMMARY

[0008] In view of the defects of the prior art, the present application provides an aluminum hose outer surface spraying treatment equipment, mainly to solve the problem that when the aluminum pipe is too long, the hardness of the aluminum pipe is relatively soft, and the aluminum pipe is very easy to bend, which leads to the aluminum pipe being very easy to fall off in the whole assembly line, thereby affecting the spraying operation of the aluminum pipe, and further affecting the processing efficiency of the factory; the aluminum pipe will be polished, passivated and cleaned before spraying, which is easy to bend the aluminum pipe during cleaning, and the bent aluminum pipe needs to be straightened using additional tools, resulting in too many devices for processing and using the aluminum pipe, thereby causing the cleaned aluminum pipe to be secondarily contaminated; and the aluminum pipe is mostly static during spraying, and the spray gun is mostly set on one side, resulting in uneven powder spraying on the outer surface of the aluminum pipe, thereby affecting the qualified rate of the aluminum pipe.

[0009] To achieve the above object, the present application provides the following technical scheme:

[0010] An aluminum hose outer surface spraying treatment equipment, comprising an electrostatic spraying room and a conveying chain, the conveying chain passing through the top of the electrostatic spraying room, the bottom of the conveying chain being fixedly connected with a connecting lug, and a aluminum pipe mounting module being arranged below the connecting lug for mounting the aluminum pipe;

[0011] The aluminum pipe mounting module comprises a mounting frame fixed below the connecting lug, a rotating rod rotatably connected between the inner walls on both sides of the bottom end of the mounting frame, a supporting rod rotatably connected to the top of the rotating rod through a damping bearing, a conical table welded to the top of the supporting rod for straightening the aluminum pipe, a gear keyed to the bottom end of the supporting rod and passing through the rotating rod, a rack arranged in the electrostatic spraying room for driving the gear to rotate, and a rubber ring interference-fitted to the circumferential outer wall of the conical table.

[0012] The top end of the mounting frame is provided with a locking positioning module for fixing the angle of the supporting rod, the circumferential outer wall of the supporting rod is provided with an auxiliary stretching module for assisting the movement of the aluminum pipe on the supporting rod, and the bottom of the mounting frame is provided with a damping assembly for offsetting the rotating torque of the rotating rod.

[0013] Further, the locking positioning module comprises a guide rod fixed to the top of the mounting frame, a sliding hole is formed in the bottom of the guide rod, a pressing frame is slidably connected in the sliding hole, a spring is arranged between the pressing frame and the guide rod, an arc-shaped groove is formed in the bottom of the pressing frame, the conical table is located in the arc-shaped groove, a rolling groove is formed in the top inner wall of the arc-shaped groove, and a rolling ball is rolled in the rolling groove.

[0014] On the basis of the foregoing scheme, the auxiliary stretching module comprises a pulling disc sleeved on the circumferential outer side of the supporting rod, sliding grooves are formed in both sides of the pulling disc, a moving plate is slidably connected in the sliding grooves, a threaded hole is formed in one side of the moving plate, a screw rod is threadedly connected in the threaded hole, a clamping plate is rotatably connected to one end of the screw rod, a straight rubber pad is bonded to one side of the clamping plate close to the pulling disc, and an adsorption assembly for assisting in fixing the height of the pulling disc is arranged at the bottom of the conical table.

[0015] As a further scheme of the present application, the adsorption assembly comprises a second magnetic block adhered in the groove at the bottom of the conical table, and a first magnetic block adhered in the top groove of the pull plate, the first magnetic block and the second magnetic block are attracted to each other at the contact surface.

[0016] Further, the damping assembly comprises a mounting seat fixed at the bottom of the mounting frame, a damper fixed at one side of the mounting seat through a ball head, a connecting head fixed at the movable end of the damper through a bolt, a fixing rod welded at the bottom of the rotating rod, a pull plate rotatably connected to one end of the fixing rod, a pull rod welded at the bottom of the pull plate, and a through hole of the connecting head can be sleeved outside the circumference of the pull rod, and an L-shaped rod is fixedly connected to one side of the mounting frame.

[0017] On the basis of the foregoing scheme, a stand is welded at the bottom of the rotating rod, L-shaped rubber pads are adhered to the two sides of the bottom end of the stand, and one end of the pull plate is pressed against the L-shaped rubber pads.

[0018] As a further scheme of the present application, the electrostatic spraying room comprises a room body, an electrostatic spraying gun is arranged at one side of the inside of the room body, a powder recovery module is arranged at the opposite side of the electrostatic spraying gun, two partitions are fixedly connected to the inside of the room body through bolts, a rack is fixed at the bottom of one of the partitions, and a gap exists between the two partitions, the width of the gap is the same as the width of the rotating rod.

[0019] Further, clamping frames are welded at the two sides of the stand, support rollers are rotatably connected in the top grooves of the clamping frames, and lower pressing rollers are welded at the bottom ends of the two sides of the mounting frame, and the longitudinal distance between the support rollers and the lower pressing rollers is the same as the thickness of the partition.

[0020] On the basis of the foregoing scheme, guide blocks are welded at the two sides of the mounting frame, the guide blocks are triangular, a cover plate is welded at the top of the guide block, and the cover plate is in contact with the partition.

[0021] As a further scheme of the present application, a counterweight rod is fixedly connected to one side of the mounting frame through a bolt, and an arc-shaped rod is welded at one end of the counterweight rod and the mounting frame in the same horizontal plane.

[0022] Compared with the prior art, the present application provides an aluminum hose outer surface spraying treatment equipment, which has the following advantages:

[0023] 1、The present application uses the electrostatic spraying room in cooperation with multiple components to realize the integration of multiple functions such as support, straightening, anti-bending transportation, and uniform spraying of the aluminum pipe through a simple mechanical mechanism, reduces the complex transmission components and independent mechanisms in the traditional equipment, and reduces the overall failure rate and maintenance cost of the equipment.

[0024] 2、The locking and positioning module is arranged, the support rod can keep in a vertical state, the aluminum pipe can be prevented from shaking or deviating due to unstable support during transportation and spraying, meanwhile, the aluminum pipe can be easily taken off from the support rod, simple operation is convenient, complex manual intervention is not needed, and the overall efficiency of the aluminum pipe spraying operation is effectively improved.

[0025] 3、The auxiliary stretching module is arranged, the pull plate pulls the aluminum pipe to move on the support rod, the conical table corrects the aluminum pipe, the smoothness of the aluminum pipe into the support rod is improved, and the problem that the aluminum pipe is blocked due to the bending and wrinkling of the aluminum pipe is effectively avoided.

[0026] 4、The adsorption assembly is arranged, the structure is simple, no additional locking device is needed, the component cost is reduced, mechanical wear is reduced, the position stability of the pull plate in the aluminum pipe installation process is effectively improved, and the efficiency of the aluminum pipe sleeving operation is further optimized.

[0027] 5、The damping assembly is arranged, the speed of the rotating rod caused by gravity is effectively buffered, and the risk that the aluminum pipe is accidentally thrown out during disassembly due to excessive torsion is avoided.

[0028] 6、The stand and the L-shaped rubber pad are arranged, the pull plate is prevented from rotating unintentionally due to its own gravity or slight vibration of the equipment, the pull plate always keeps a stable storage state during the spraying operation, collision and interference of the pull plate with the inner wall of the electrostatic spraying room or other components are avoided, and the continuity and smoothness of the spraying operation are ensured.

[0029] 7、The partition plate is arranged, the working environment of the gear and the rack is in a relatively stable airflow space, a large amount of spraying powder outside is prevented from entering the meshing area of the gear and the rack, and pollution and wear of the transmission components by the powder are reduced.

[0030] 8、The support roller and the pressing roller are arranged, the rotating rod and related transmission components are reinforced from two dimensions of transverse support and longitudinal limiting, the shaking of the aluminum pipe during rotation due to the gap between the conical table and the arc-shaped groove is effectively resisted, reliable structural guarantee is provided for uniform spraying, quality problems such as uneven coating thickness and local spraying leakage caused by shaking are avoided, and the consistency and qualification rate of the aluminum pipe outer surface spraying are improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a three-dimensional structure schematic view of an aluminum hose outer surface spraying treatment equipment proposed in the application;

[0032] Figure 2 It is an internal structure schematic view of an aluminum hose outer surface spraying treatment equipment proposed in the application;

[0033] Figure 3 This invention provides an aluminum hose outer surface spraying treatment device. Figure 1 A partially enlarged structural diagram;

[0034] Figure 4 This invention provides an aluminum hose outer surface spraying treatment device. Figure 3 A schematic diagram of the enlarged front structure at the bottom;

[0035] Figure 5 This invention provides an aluminum hose outer surface spraying treatment device. Figure 3 Enlarged schematic diagram of the bottom rear structure;

[0036] Figure 6 This invention provides an aluminum hose outer surface spraying treatment device. Figure 3 A magnified diagram of the top structure;

[0037] Figure 7 This invention provides an aluminum hose outer surface spraying treatment device. Figure 6 A partial sectional view of the structure;

[0038] Figure 8 This invention provides an aluminum hose outer surface spraying treatment device. Figure 7 A schematic diagram of the localized explosion structure;

[0039] Figure 9 This invention provides an aluminum hose outer surface spraying treatment device. Figure 8 A partially enlarged structural diagram;

[0040] Figure 10 This invention provides an aluminum hose outer surface spraying treatment device. Figure 8 A schematic diagram of a localized explosion structure.

[0041] In the diagram: 1. Electrostatic spray booth; 2. Conveyor chain; 3. Aluminum tube installation module; 4. Connecting lug; 5. Locking and positioning module; 6. Rack; 7. Counterweight bar; 8. Arc-shaped bar; 9. Auxiliary tensioning module;

[0042] 101. Chamber body; 102. Electrostatic spray gun; 103. Partition; 104. Powder recovery module;

[0043] 301. Mounting bracket; 302. Support rod; 303. Cover plate; 304. Guide block; 305. Mounting base; 306. Damper; 307. Connector; 308. Fixing rod; 309. Pull plate; 310. L-shaped rubber pad; 311. Column; 312. Tie rod; 313. Gear; 314. Rotating rod; 315. Clamp; 316. Support roller; 317. Lower pressure roller; 318. Conical platform; 319. L-shaped rod;

[0044] 501. Guide rod; 502. Spring; 503. Lower pressure bracket; 504. Sliding hole; 505. Arc-shaped groove; 506. Ball bearing;

[0045] 901. Pull plate; 902. Rubber ring; 903. Slide groove; 904. Moving plate; 905. Lead screw; 906. Clamping plate; 907. Straight rubber pad; 908. First magnetic block; 909. Second magnetic block. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0047] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] Please seeFigures 1-10 As shown, an aluminum hose outer surface spraying treatment equipment includes an electrostatic spray booth 1 and a conveyor chain 2. The conveyor chain 2 is model UH-5075-HV and has a corresponding guide rail. The conveyor chain 2 passes through the top of the electrostatic spray booth 1. The bottom of the conveyor chain 2 is fixed with a connecting ear 4 by bolts. Below the connecting ear 4 is an aluminum tube mounting module 3 for installing aluminum tubes.

[0050] The aluminum tube mounting module 3 includes a mounting bracket 301 fixed below the connecting ear 4. The lower end of the mounting bracket 301 is trapezoidal. The trapezoidal mounting bracket 301 can minimize the amount of powder coating on the mounting bracket 301, thereby facilitating the recycling of powder coating.

[0051] Meanwhile, the mounting bracket 301 can change the horizontal placement of the aluminum tube to the vertical placement, effectively reducing the horizontal space occupied by the aluminum tube during transportation and allowing the aluminum tube to rotate normally when turning.

[0052] A rotating rod 314 is rotatably connected between the inner walls of both sides at the bottom of the mounting bracket 301. An insulating rubber pad is provided between the connecting ear 4 and the mounting bracket 301. An insulating rubber pad is also provided between the rotating rod 314 and the mounting bracket 301. This can prevent electrical connection between the mounting bracket 301 and the rotating rod 314, reduce the amount of powder coating adhering to the mounting bracket 301, and also allow high-temperature resistant tape to be wrapped around each rod of the mounting bracket 301. When the mounting bracket 301 is removed from the nozzle, it is grounded to eliminate the accumulation of static charge.

[0053] The top of the rotating rod 314 is rotatably connected to the support rod 302 via a damping bearing. The aluminum tube is supported by the support rod 302, making it difficult to bend, thus solving the problem of transporting the aluminum tube on the assembly line. The damping bearing allows the support rod to maintain a relatively stable angle when it is not subjected to external force, preventing the aluminum tube from rotating unexpectedly due to its own weight.

[0054] The top of the strut 302 is welded with a conical platform 318 for straightening aluminum tubes. When the aluminum tube needs to be sprayed, one end of the aluminum tube is put on the conical platform 318. The conical platform 318 will support the inner surface of the aluminum tube, thereby restoring the concavity of the aluminum tube and making the aluminum tube straight, thus solving the problem of straightening bent aluminum tubes.

[0055] The bottom end of the strut 302 passes through the rotating rod 314 and is keyed to the gear 313. The electrostatic spray chamber 1 is equipped with a rack 6 for driving the gear 313 to rotate. The outer circumference of the cone-shaped platform 318 is fitted with a rubber ring 902.

[0056] After the aluminum tube is fully inserted into the support rod 302, a rubber ring 902 is used to fit on the outer circumference of the conical platform 318 and to make the rubber ring 902 contact the top of the aluminum tube, thereby preventing the top of the aluminum tube from being powder coated.

[0057] During the process of the aluminum tube being moved by the conveyor chain 2, the fixed rack 6 meshes with the gear 313, which causes the gear 313 to drive the support rod 302 and the aluminum tube to rotate, thereby achieving uniform powder coating and solving the problem of uneven powder coating.

[0058] By integrating multiple functions such as supporting, straightening, anti-bending transportation, and uniform spraying of aluminum tubes through a simple mechanical mechanism, the complex transmission components and independent mechanisms in traditional equipment are reduced, thereby lowering the overall failure rate and maintenance costs of the equipment.

[0059] Meanwhile, the components work closely together through modular design. From the positioning and straightening during aluminum tube installation to the stable support during transportation and the automatic rotation during spraying, the entire process is seamless and efficient, requiring no additional manual intervention or switching between multiple devices. This significantly improves the automation level and production efficiency of aluminum hose outer surface spraying.

[0060] The top of the mounting bracket 301 is provided with a locking and positioning module 5 for fixing the angle of the support rod 302. The outer circumference of the support rod 302 is provided with an auxiliary tensioning module 9 for assisting in pulling the aluminum tube to move on the support rod 302. The bottom of the mounting bracket 301 is provided with a damping component to counteract the rotational torque of the rotating rod 314.

[0061] To solve the problem of keeping the strut 302 vertical after the aluminum tube is sleeved;

[0062] The locking and positioning module 5 includes a guide rod 501 fixed to the top of the mounting bracket 301. A sliding hole 504 is provided at the bottom of the guide rod 501. A lower pressure bracket 503 is slidably connected in the sliding hole 504. A spring 502 is provided between the lower pressure bracket 503 and the guide rod 501. An arc-shaped groove 505 is provided at the bottom of the lower pressure bracket 503, and a conical platform 318 is located in the arc-shaped groove 505. A rolling groove is provided on the top inner wall of the arc-shaped groove 505, and a ball bearing 506 rolls in the rolling groove.

[0063] After the aluminum tube is fitted onto the support rod 302, the rotating rod 314 is rotated. The rotating rod 314 will drive the support rod 302 and the aluminum tube to rotate, thereby causing the top conical platform 318 to press the lower pressure frame 503 upward, which in turn causes the spring 502 to contract. After the conical platform 318 is inserted into the arc-shaped groove 505, the compressed spring 502 returns to its original position, thereby locking the conical platform 318 and limiting the support rod 302, keeping the support rod 302 in a vertical state, and preventing the aluminum tube from shaking or shifting due to unstable support during transportation and spraying.

[0064] The ball bearing 506 reduces the friction between the conical platform 318 and the arc-shaped groove 505, making the conical platform 318 rotate more smoothly. It also reduces wear between components and extends the service life of the locking and positioning module 5.

[0065] When it is necessary to remove the coated aluminum tube, simply rotate the rotating rod 314 again to disengage the conical platform 318 from the arc-shaped groove 505. The spring 502 will drive the lower pressure frame 503 to reset, and the aluminum tube can then be easily removed from the support rod 302. The entire operation is simple and convenient, requiring no complicated manual intervention, which effectively improves the overall efficiency of aluminum tube coating operations.

[0066] To solve the problem of the aluminum tube being blocked by the bent folds when inserted into the support rod 302;

[0067] The auxiliary stretching module 9 includes a pull plate 901 fitted around the outer circumference of the support rod 302. The pull plate 901 has grooves 903 on both sides. A movable plate 904 is slidably connected in the grooves 903. A threaded hole is opened on one side of the movable plate 904. A lead screw 905 is threadedly connected in the threaded hole. A clamping plate 906 is rotatably connected to one end of the lead screw 905. A straight rubber pad 907 is glued to the side of the clamping plate 906 near the pull plate 901. An adsorption component for auxiliary fixing of the height of the pull plate 901 is provided at the bottom of the conical platform 318.

[0068] When the aluminum tube is inserted into the support rod 302, one end of the aluminum tube will be fitted onto the outer circumference of the pull plate 901. At this time, one end of the moving plate 904 is slid out of the groove 903, so that the clamping plate 906 and the straight rubber pad 907 are moved out of the groove 903. The screw 905 is rotated, so that the clamping plate 906 moves, and the straight rubber pad 907 squeezes the aluminum tube, fixing the aluminum tube on the pull plate 901. Pulling the pull plate 901 pulls the aluminum tube to move on the support rod 302, which improves the smoothness of the aluminum tube being inserted into the support rod 302 and effectively avoids the problem of obstruction caused by the bending and wrinkling of the aluminum tube.

[0069] After the aluminum tube is installed and fixed, rotate the screw 905 in the opposite direction to loosen the clamp 906 from the aluminum tube, and push the moving plate 904 back into the slide groove 903. The operation is simple and does not affect the subsequent spraying operation.

[0070] To solve the problem that the pull plate 901 can slide freely on the support rod 302, which requires the pull plate 901 to be moved back and forth during the installation of aluminum tubes;

[0071] The adsorption assembly includes a second magnetic block 909 bonded to the bottom groove of the cone-shaped platform 318, and a first magnetic block 908 bonded to the top groove of the pull plate 901. The contact surfaces of the first magnetic block 908 and the second magnetic block 909 are adsorbed.

[0072] The magnetic attraction between the first magnetic block 908 and the second magnetic block 909 allows the pull plate 901 to be stably stopped at the bottom of the conical platform 318 when it is not pulled by an external force, thus preventing it from sliding freely on the support rod 302.

[0073] When the pull plate 901 needs to be pulled, the applied pulling force only needs to overcome the attraction force between the two magnetic blocks, which is convenient to operate and will not damage the surface of the support rod 302.

[0074] This positioning method, which uses magnetic adsorption, has a simple structure and requires no additional locking device. This reduces component costs and mechanical wear, effectively improving the positional stability of the pull plate 901 during aluminum tube installation and further optimizing the efficiency of aluminum tube installation.

[0075] A fixed rod 308 is welded to the bottom of the rotating rod 314. A pull plate 309 is rotatably connected to one end of the fixed rod 308. By rotating the pull plate 309 so that the pull plate 309 and the fixed rod 308 are in a straight line, the rotating rod 314 can be easily rotated.

[0076] The design of the pull plate 309 provides a convenient point of force application for the operator to rotate the rotating rod 314. Compared with directly rotating the rotating rod 314, it is more labor-saving, especially in assembly line operations that require frequent installation and removal of aluminum tubes, effectively reducing the labor intensity of manual operation.

[0077] To address the issue of excessive torque causing the aluminum tube to be thrown out when flipping the rotating rod 314 during disassembly;

[0078] The damping assembly includes a mounting base 305 fixed to the bottom of the mounting bracket 301. A damper 306 is fixed to one side of the mounting base 305 by a ball joint. The damper 306 is of model HB-28-200. A connector 307 is fixed to the movable end of the damper 306 by bolts. A tie rod 312 is welded to the bottom of the pull plate 309, and the through hole of the connector 307 can be fitted onto the outer circumference of the tie rod 312.

[0079] When it is necessary to remove the aluminum tube, make the pull plate 309 and the fixing rod 308 in a straight line, and make the through hole on the connector 307 fit on the pull rod 312. At this time, rotate the pull plate 309, thereby driving the rotating rod 314 to rotate. Under the action of the damper 306, the speed at which the rotating rod 314 flips rapidly due to gravity can be effectively buffered, avoiding the risk of the aluminum tube being accidentally thrown out during the disassembly process due to excessive torque.

[0080] Meanwhile, the damping force of damper 306 can be adjusted according to actual production needs;

[0081] After the aluminum tube is removed, the connector 307 can be removed from the pull rod 312 to release the restriction of the damping component on the rotating rod 314, making it easier to carry out the next aluminum tube installation. The entire damping adjustment process does not require complicated tools and is flexible and efficient.

[0082] An L-shaped rod 319 is fixedly connected to one side of the mounting bracket 301. The L-shaped rod 319 limits the rotation of the rotating rod 314, so that its end contacts the side of the fixed rod 308, thereby preventing the rotating rod 314 from continuing to flip to one side. This ensures that the rotating rod 314 maintains a stable parking position when not in operation, and avoids the rotating rod 314 from swinging randomly due to accidental contact, which would affect the accuracy of subsequent aluminum tube installation.

[0083] This mechanical limiting method requires no additional electric drive and relies on the contact cooperation of the structure itself to achieve reliable positioning, further improving the safety and stability of the entire disassembly mechanism.

[0084] To solve the problem of the pull plate 309 blocking contact with the electrostatic spray booth 1 during the spraying process;

[0085] A column 311 is welded to the bottom of the rotating rod 314. L-shaped rubber pads 310 are glued to both sides of the bottom end of the column 311, and one end of the pull plate 309 presses the L-shaped rubber pads 310.

[0086] When the pull plate 309 is not in use, it is perpendicular to the fixing rod 308. At this time, one end of the pull plate 309 will press the L-shaped rubber pad 310, thereby increasing the friction between the pull plate 309 and the column 311. At the same time, the protruding part at the bottom of the L-shaped rubber pad 310 will form a simple supporting structure for the pull plate 309, effectively preventing the pull plate 309 from rotating unexpectedly due to its own weight or slight vibration of the equipment. This ensures that it always maintains a stable storage state during the spraying operation, avoiding collisions and interference with the inner wall of the electrostatic spray booth 1 or other components, and ensuring the continuity and smoothness of the spraying operation.

[0087] In addition, the elastic material of the L-shaped rubber pad 310 can form a flexible buffer when the pull plate 309 and the column 311 come into contact, reducing hard friction between metal parts, reducing the possibility of surface wear after long-term use, and extending the service life of the pull plate 309 and the column 311.

[0088] Introduction to electrostatic spray booth 1;

[0089] The electrostatic spray booth 1 consists of a chamber system, an electrostatic spraying system, a powder recovery system, a ventilation and safety system, and a control system.

[0090] The chamber system mainly includes chamber 101, which is the main structure of the spray booth. Its design needs to be determined according to the size, shape and production batch of the workpiece.

[0091] The electrostatic spraying system mainly includes a high-voltage electrostatic generator (used to generate the high-voltage DC electric field required for spraying), a powder feeder (responsible for continuously and uniformly conveying powder coating from the container to the spray gun), and an electrostatic spray gun 102 set inside the chamber 101 on one side (which sprays the powder by making the powder particles negatively charged through corona discharge). The start and stop of the electrostatic spray gun 102 can be controlled by a slotted photoelectric sensor, and the specific settings can be set according to actual needs.

[0092] There are multiple electrostatic spray guns 102, arranged in multiple groups in the horizontal and vertical directions. The horizontal spray range is not less than the circumference of the aluminum tube, and the vertical spray range is not less than the length of the aluminum tube, so as to achieve a very high degree of uniform spraying on the aluminum tube.

[0093] The powder recovery system mainly includes a powder recovery module 104 set on the opposite side of the electrostatic spray gun 102. The powder recovery module 104 is mainly composed of a large cyclone separation and recovery, filter element recovery, etc., and is responsible for collecting the oversprayed powder that has not been adsorbed onto the workpiece and making it reusable after filtration.

[0094] The ventilation and safety system mainly includes fans and fire alarms. Fans provide a stable and steady airflow to the spray booth, which helps guide the direction of paint mist and can also remove solvent vapors from the air in a timely manner, keeping the operating environment clean. Fire alarms can quickly sound an alarm when there is a fire hazard in the spray booth, giving operators valuable emergency response time and effectively ensuring production safety.

[0095] The control system is responsible for the centralized control and adjustment of various parameters (such as electrostatic voltage, powder quantity, airflow speed, etc.) throughout the entire spraying process.

[0096] The interior of the chamber 101 is fixed with two partitions 103 by bolts. The rack 6 is fixed to the bottom of one of the partitions 103. There is a gap between the two partitions 103, and the width of the gap is the same as the width of the rotating rod 314.

[0097] It can keep the working environment of gear 313 and rack 6 in a relatively stable airflow space, avoid a large amount of external spray powder entering the meshing area of ​​gear 313 and rack 6, and reduce the contamination and wear of transmission components by powder.

[0098] At the same time, the baffle 103 can also guide the airflow in the spray booth, so that the oversprayed powder flows more concentratedly to the powder recovery module 104, thereby improving the powder recovery rate.

[0099] To address the issue of aluminum tubes easily wobbling during rotary spraying;

[0100] The column 311 has a clamp 315 welded on both opposite sides. The top groove of the clamp 315 is rotatably connected to the support roller 316. The bottom of both sides of the mounting frame 301 is welded with a lower pressure roller 317. The longitudinal distance between the support roller 316 and the lower pressure roller 317 is the same as the thickness of the partition plate 103.

[0101] The support roller 316 supports the partitions 103 on both sides, thereby keeping the rotating rod 314 in a stable balance and making it difficult for the aluminum tube to sway during rotation.

[0102] The pressure roller 317 presses down on the partition 103 on which the rack 6 is installed to prevent the partition 103 from bending, thereby ensuring that the gear 313 and the rack 6 always maintain a stable meshing state, further improving the stability of the aluminum tube during the rotary spraying process.

[0103] The design of the support roller 316 and the lower pressure roller 317 reinforces the rotating rod 314 and related transmission components from two dimensions: lateral support and longitudinal limiting. This effectively resists the shaking caused by the gap between the conical platform 318 and the arc-shaped groove 505 when the aluminum tube rotates. This provides a reliable structural guarantee for uniform spraying and avoids quality problems such as uneven coating thickness and local missed spraying caused by shaking. It significantly improves the consistency and pass rate of the coating on the outer surface of the aluminum tube.

[0104] At the same time, it can also stably guide the operation of the mounting bracket 301, ensuring that it will not deviate during the movement of the aluminum tube, and keep the aluminum tube on the preset spraying path. This dual reinforcement and guidance mechanism not only enhances the overall stability of the equipment operation, but also reduces mechanical wear caused by component shaking or displacement, extends the service life of the equipment, reduces maintenance costs and downtime, and provides strong support for continuous and high-efficiency aluminum tube spraying production.

[0105] To solve the problem of ensuring that the bottom of the mounting bracket 301 can be precisely inserted into the gap;

[0106] Guide blocks 304 are welded to both sides of the mounting bracket 301. The guide blocks 304 are triangular in shape, and a cover plate 303 is welded to the top of the guide blocks 304. The cover plate 303 is in contact with the partition plate 103.

[0107] During the descent of the mounting frame 301, the inclined side of the triangular guide block 304 can form a sliding guide with the edge of the gap between the partition plate 103, guiding the mounting frame 301 to be accurately embedded in the gap, and avoiding the bottom of the mounting frame 301 from colliding or getting stuck with the partition plate 103 due to misalignment.

[0108] After the mounting frame 301 is in place, the cover plate 303 contacts the surface of the partition plate 103. It not only protects the connection between the guide block 304 and the mounting frame 301, preventing the spray powder from entering the guide structure and affecting the guide accuracy, but also further enhances the stability of the mounting frame 301 in the lateral direction by adhering to the partition plate 103. Together with the support roller 316 and the pressure roller 317, they jointly construct a multi-dimensional and stable support system for the mounting frame 301 in the spray booth, ensuring the accuracy and reliability of the equipment operation throughout the entire spraying process.

[0109] To address the issue of the mounting frame 301 being unbalanced on the conveyor chain 2;

[0110] A counterweight rod 7 is bolted to one side of the mounting frame 301. An arc-shaped rod 8 is welded to one end of the counterweight rod 7 and the mounting frame 301 at the same horizontal plane. The bending direction of the arc-shaped rod 8 is adapted to the running trajectory of the conveyor chain 2. When the mounting frame 301 moves to the bend position with the conveyor chain 2, the arc-shaped rod 8 can reduce spatial interference with the surrounding structure and ensure the smooth operation of the equipment.

[0111] The weight of the counterweight rod 7 can be adjusted according to the actual weight imbalance of the mounting frame 301. By adding or removing the counterweight block at the end of the counterweight rod 7, the weight on both sides of the mounting frame 301 can be made more balanced, avoiding uneven force on the conveyor chain 2 due to uneven weight distribution, which may cause deviation or excessive wear, thereby extending the service life of the conveyor system. At the same time, it ensures that the mounting frame 301 maintains a stable posture during the spraying process, improving the uniformity of the spraying quality.

[0112] The present invention is used in the following steps:

[0113] S1: Pass one end of the aluminum tube through the conical platform 318 and fit it on the outer circumference of the pull plate 901. Slide one end of the moving plate 904 out of the slide groove 903, so that the clamping plate 906 and the straight rubber pad 907 are moved out of the slide groove 903. Rotate the screw 905 to move the clamping plate 906, and then make the straight rubber pad 907 squeeze the aluminum tube, so that the aluminum tube is fixed on the pull plate 901.

[0114] S2: Pull the pull plate 901 to move the aluminum tube on the support rod 302. During the movement of the aluminum tube, the conical platform 318 will support the inner surface of the aluminum tube, thereby restoring the concavity of the aluminum tube and making the aluminum tube straight.

[0115] S3: After the aluminum tube is installed, rotate the rotating rod 314. The rotating rod 314 will drive the support rod 302 and the aluminum tube to rotate, thereby causing the top conical platform 318 to press the lower pressure frame 503 upward, which in turn causes the spring 502 to contract. After the conical platform 318 is inserted into the arc-shaped groove 505, the compressed spring 502 returns to its original position, thereby locking the conical platform 318 and limiting the support rod 302, keeping the support rod 302 in a vertical state.

[0116] S4: When the conveyor chain 2 starts, it will move the mounting frame 301, thereby bringing the mounting frame 301 and the aluminum tube into the electrostatic spray booth 1. The electrostatic spray gun 102 in the electrostatic spray booth 1 will spray the outer surface of the aluminum tube.

[0117] S5: During the spraying process, the control system monitors parameters such as electrostatic voltage, powder spraying amount and airflow speed in real time. By adjusting the output voltage of the high-voltage electrostatic generator and the powder feeding rate of the powder feeder, it ensures that the powder coating is uniformly adsorbed on the surface of the aluminum tube. At the same time, the fan guides the oversprayed powder to flow to the powder recovery module 104. The large cyclone separation and recovery device performs preliminary separation of the powder, and the filter element recovery system further filters the fine powder particles so that the recovered powder meets the standard for reuse.

[0118] S6: After the spraying operation is completed, the conveyor chain 2 drives the mounting frame 301 to move out of the electrostatic spraying room 1. After secondary processing at multiple stations, the spraying operation of the aluminum tube is completed.

[0119] S7: At this point, following the steps for disassembling the aluminum tube, first, put the connector 307 onto the pull rod 312, rotate the pull plate 309 to make the rotating rod 314 flip, and under the buffering effect of the damper 306, the aluminum tube disassembly is completed smoothly. Then, remove the connector 307 and prepare for the installation and spraying of the next batch of aluminum tubes. The entire production process is coherent and efficient, and the various systems work together to significantly improve the automation level of aluminum tube spraying and the stability of product quality.

[0120] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0121] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A spray coating treatment device for the outer surface of an aluminum hose, comprising an electrostatic spray booth (1) and a conveyor chain (2), the conveyor chain (2) passing through the top of the electrostatic spray booth (1), characterized in that, The bottom of the conveyor chain (2) is fixedly connected to a connecting ear (4), and an aluminum tube mounting module (3) for mounting aluminum tubes is provided below the connecting ear (4). The aluminum tube mounting module (3) includes a mounting bracket (301) fixed below the connecting ear (4). The lower end of the mounting bracket (301) is trapezoidal. A rotating rod (314) is rotatably connected between the inner walls on both sides of the bottom end of the mounting bracket (301). A support rod (302) is rotatably connected to the top of the rotating rod (314) through a damping bearing. A conical platform (318) for straightening the aluminum tube is welded to the top of the support rod (302). A gear (313) is keyed through the rotating rod (314) at the bottom end of the support rod (302). A rack (6) for driving the gear (313) to rotate is provided in the electrostatic spray booth (1). A rubber ring (902) is interference-fitted to the outer circumference of the conical platform (318). The top of the mounting bracket (301) is provided with a locking positioning module (5) for fixing the angle of the support rod (302), and the outer circumferential wall of the support rod (302) is provided with an auxiliary tensioning module (9) for assisting in pulling the aluminum tube to move on the support rod (302). The bottom of the mounting bracket (301) is provided with a damping component to counteract the rotational torque of the rotating rod (314). The auxiliary stretching module (9) includes a pull plate (901) sleeved on the outer circumference of the support rod (302). The pull plate (901) has a sliding groove (903) on both sides. A movable plate (904) is slidably connected in the sliding groove (903). A threaded hole is opened on one side of the movable plate (904). A screw rod (905) is threaded in the threaded hole. A clamping plate (906) is rotatably connected to one end of the screw rod (905). A straight rubber pad (907) is glued to the side of the clamping plate (906) near the pull plate (901). An adsorption component for auxiliary fixing of the height of the pull plate (901) is provided at the bottom of the conical platform (318). The adsorption assembly includes a second magnetic block (909) bonded to the bottom groove of the cone-shaped platform (318), and a first magnetic block (908) bonded to the top groove of the pull plate (901). The contact surfaces of the first magnetic block (908) and the second magnetic block (909) are adsorbed.

2. The aluminum hose outer surface spraying treatment equipment according to claim 1, characterized in that, The locking and positioning module (5) includes a guide rod (501) fixed to the top of the mounting bracket (301). A sliding hole (504) is provided at the bottom of the guide rod (501). A lower pressure bracket (503) is slidably connected in the sliding hole (504). A spring (502) is provided between the lower pressure bracket (503) and the guide rod (501). An arc-shaped groove (505) is provided at the bottom of the lower pressure bracket (503), and a cone-shaped platform (318) is located in the arc-shaped groove (505). A roller groove is provided on the top inner wall of the arc-shaped groove (505), and a ball (506) rolls in the roller groove.

3. The aluminum hose outer surface spraying treatment equipment according to claim 1, characterized in that, The damping assembly includes a mounting base (305) fixed to the bottom of the mounting bracket (301), a damper (306) fixed to one side of the mounting base (305) by a ball head, a connector (307) fixedly connected to the movable end of the damper (306), a fixed rod (308) welded to the bottom of the rotating rod (314), a pull plate (309) rotatably connected to one end of the fixed rod (308), a pull rod (312) welded to the bottom of the pull plate (309), and the through hole of the connector (307) can be fitted onto the outer circumference of the pull rod (312). An L-shaped rod (319) is fixedly connected to one side of the mounting bracket (301).

4. The aluminum hose outer surface spraying treatment equipment according to claim 3, characterized in that, A column (311) is welded to the bottom of the rotating rod (314). L-shaped rubber pads (310) are glued to both sides of the bottom end of the column (311), and one end of the pull plate (309) squeezes the L-shaped rubber pads (310).

5. The aluminum hose outer surface spraying treatment equipment according to claim 4, characterized in that, The electrostatic spraying chamber (1) includes a chamber body (101), an electrostatic spray gun (102) is provided on one side of the chamber body (101), and a powder recovery module (104) is provided on the opposite side of the electrostatic spray gun (102). Two partitions (103) are fixedly connected inside the chamber body (101), and a rack (6) is fixed to the bottom of one of the partitions (103). There is a gap between the two partitions (103), and the width of the gap is the same as the width of the rotating rod (314).

6. The aluminum hose outer surface spraying treatment equipment according to claim 5, characterized in that, The column (311) has a clamp (315) welded on both sides. The clamp (315) has a support roller (316) rotatably connected in the groove at the top. The mounting frame (301) has a pressure roller (317) welded on both sides at the bottom. The longitudinal distance between the support roller (316) and the pressure roller (317) is the same as the thickness of the partition (103).

7. The aluminum hose outer surface spraying treatment equipment according to claim 5, characterized in that, Guide blocks (304) are welded on both sides of the mounting bracket (301). The guide blocks (304) are triangular in shape, and a cover plate (303) is welded on the top of the guide blocks (304). The cover plate (303) is in contact with the partition plate (103).

8. The aluminum hose outer surface spraying treatment equipment according to claim 1, characterized in that, A counterweight rod (7) is fixedly connected to one side of the mounting bracket (301), and an arc-shaped rod (8) is welded to one end of the counterweight rod (7) at the same level as the mounting bracket (301).

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