Cold spraying system

Abstract

The cold spraying system comprises a spraying room, a plurality of adjusting mechanisms, an air draft mechanism, a conveying mechanism, a plurality of hanging mechanisms and a powder spraying mechanism, the spraying room is provided with a powder spraying cavity, the two ends of the powder spraying cavity in the length direction are open, and a plurality of mounting openings are formed in the bottom of the powder spraying cavity; the mounting ports are arranged at intervals along the length direction of the powder spraying cavity; the adjusting mechanisms are in one-to-one correspondence with the mounting ports and are used for adjusting the opening and closing sizes of the mounting ports; the inlet end of the air draft mechanism communicates with all the mounting openings and is used for exhausting air in the powder spraying cavity so that waste powder can be recycled. The conveying mechanism can do annular reciprocating motion in the horizontal plane and is provided with a feeding station and a powder spraying station. The cold spraying system has the beneficial effects that the cold spraying system is high in powder spraying efficiency and little in powder overflow, pollution to the environment in a plant is avoided, waste powder can be recycled, and waste of the waste powder is avoided.

Description

Technical Field

[0001] This invention relates to the field of cold spraying technology, and more particularly to a cold spraying system. Background Technology

[0002] Cold spraying is a surface engineering technology that uses high-pressure gas to accelerate metal powder to supersonic speeds (500-1200 m / s) and uses kinetic energy rather than thermal energy to achieve material deposition. The working temperature is much lower than the melting point of the material (usually <600℃), avoiding problems such as material oxidation, phase transformation and thermal stress. It is suitable for coating preparation of temperature-sensitive materials.

[0003] In the process of cold spraying workpieces using existing cold spraying equipment (such as the cold spraying device and cold spraying equipment disclosed in application number 202211269948.8), the workpiece is first placed on a platform, and then the spray gun is held in hand, the nozzle end of the spray gun is aimed at the workpiece, and after the spray gun is turned on, metal powder is ejected from the nozzle end of the spray gun and deposited on the surface of the workpiece. However, this method has low powder spraying efficiency, the powder is easy to splash, pollutes the environment in the factory, and the waste powder cannot be recycled, resulting in waste powder. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a cold spraying system that solves the technical problems of low powder spraying efficiency, easy powder splashing, pollution of the factory environment, inability to recycle waste powder, and waste powder waste in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention provides a cold spraying system, comprising: A spray booth has a powder spraying chamber, both ends of which are open along the length of the powder spraying chamber. The bottom of the powder spraying chamber has multiple mounting ports, and each mounting port is spaced apart along the length of the powder spraying chamber. Multiple adjustment mechanisms, each corresponding to one of the mounting ports, are used to adjust the opening and closing size of the mounting ports; The exhaust mechanism, whose inlet end is connected to each of the aforementioned installation ports, is used to extract the air from the powder spraying chamber in order to recover waste powder; The conveying mechanism can make circular reciprocating motion in a horizontal plane. It has a feeding station and a powder spraying station. The feeding station is located outside the powder spraying chamber, and the powder spraying station is located inside the powder spraying chamber. Multiple suspension mechanisms are arranged at intervals on the conveying mechanism for suspending workpieces; A powder spraying mechanism is installed at the powder spraying station and is used to spray powder onto the workpiece.

[0006] Furthermore, the spray booth also has a recovery chamber, and each of the installation ports is connected to the recovery chamber. The inlet end of the exhaust mechanism is connected to the recovery chamber for extracting air from the recovery chamber.

[0007] Furthermore, the adjustment mechanism includes a fixed plate and a movable plate. The fixed plate is disposed at the mounting port and has multiple first flow ports arranged in a ring array to form a first ring. The movable plate is placed on the fixed plate and can rotate relative to the fixed plate. The rotation axis of the movable plate is coaxial with the first ring. The movable plate has multiple second flow ports arranged in a ring array to form a second ring. The second ring is coaxial with the rotation axis of the movable plate. During the rotation of the movable plate around its rotation axis, the overlap area between each second flow port and each corresponding first flow port changes.

[0008] Furthermore, the fixed plate is provided with a receiving groove, which is a columnar structure and coaxial with the first ring. The movable plate is a columnar structure and is rotatably disposed in the receiving groove.

[0009] Furthermore, the adjustment mechanism also includes a drive assembly connected to the spray booth and the movable plate, which is used to drive the movable plate to rotate.

[0010] Furthermore, the drive assembly includes a screw, a connecting rod, and a handwheel. Multiple screw holes are provided on one side wall of the powder spraying chamber, with each screw hole spaced apart along the length of the powder spraying chamber and extending horizontally along the width of the powder spraying chamber. Each screw hole corresponds one-to-one with each mounting port. Each screw passes through each screw hole and is screwed into the screw hole. One end of the connecting rod is hinged to the inner end of the screw, and the other end of the connecting rod is hinged to the movable plate. The handwheel is fixedly connected to the outer end of the screw.

[0011] Furthermore, the conveying mechanism includes a support, a chain, at least three sprockets, and a rotation drive. Each sprocket is rotatably mounted on the support via a rotary shaft and forms a polygonal structure. The chain is closed and wound around each sprocket. The output end of the rotation drive is coaxially and fixedly connected to the rotary shaft of one of the sprockets to drive the corresponding sprocket to rotate. Each suspension mechanism is connected to the chain.

[0012] Furthermore, the suspension mechanism includes a seat, a central shaft, a gear, a limiting member, an upper bushing, a lower bushing, a sliding shaft, and a hook. The seat is fixedly connected to the chain and slidably connected to the bracket. The central shaft is vertically arranged, with its top rotatably connected to the seat and capable of rotating around its own axis. The gear is fixedly sleeved on the upper end of the central shaft. The limiting member is arranged on the side of the central shaft, with its top fixedly connected to the seat. The upper bushing is slidably sleeved on the central shaft and slidably connected to the limiting member, and can move up and down along the central shaft. The lower bushing is slidably sleeved on the central shaft, with its top rotatably connected to the bottom of the upper bushing and can only move up and down along the central shaft. The sliding shaft is horizontally arranged, with one end fixedly connected to the upper bushing. The hook is fixedly connected to the lower bushing and is used to suspend workpieces.

[0013] Furthermore, the cold spraying system also includes a transmission mechanism, which is located at the powder spraying station and is used to connect with the suspension mechanism that reaches the powder spraying station, so as to convert the horizontal movement of the suspension mechanism at the powder spraying station into the rotation and vertical movement of the suspension mechanism.

[0014] Furthermore, the transmission mechanism includes a rack and a transmission plate. The rack is horizontally arranged along the moving direction of the suspension mechanism and is fixedly connected to the spray booth. When the suspension mechanism reaches the powder spraying station, the gear meshes with the rack. The transmission plate is horizontally arranged along the moving direction of the suspension mechanism and is fixedly connected to the spray booth. The transmission plate has a transmission groove extending along its length and open at both ends. The transmission groove has a zigzag structure and has a highest position and a lowest position. When the suspension mechanism reaches the powder spraying station, the other end of the sliding shaft slides into the transmission groove.

[0015] Compared with the prior art, the beneficial effects of the present invention include: at the feeding station, each workpiece to be sprayed is suspended on a corresponding suspension mechanism. When each suspension mechanism enters the powder spraying chamber in turn and reaches the powder spraying station, the powder spraying mechanism sprays powder onto the workpiece. During the powder spraying operation, the exhaust mechanism extracts the air from the powder spraying chamber through each mounting port, and the waste powder in the powder spraying chamber is extracted simultaneously. During the exhaust operation, according to the waste powder recovery situation, each adjustment mechanism is operated in sequence to adjust the opening and closing size of the corresponding mounting ports, so that the opening of the middle mounting port is the largest. Following the order from the middle to both ends, the opening and closing size of each mounting port decreases in sequence, thereby forming a conical exhaust channel in the powder spraying chamber, preventing waste powder from overflowing from the openings at both ends of the powder spraying chamber, and improving the suction effect of waste powder. This cold spraying system has high powder spraying efficiency, less powder overflow, avoids pollution of the factory environment, and can also recycle waste powder, avoiding waste powder waste. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a cold spraying system provided by the present invention; Figure 2 This is a three-dimensional structural diagram of a cold spraying system provided by the present invention, omitting the conveying mechanism, suspension mechanism and transmission mechanism; Figure 3 This is a three-dimensional structural schematic diagram of the adjustment mechanism provided by the present invention; Figure 4 This is a three-dimensional structural diagram of a cold spraying system provided by the present invention, omitting the spray booth and adjustment mechanism; Figure 5 This is a three-dimensional structural schematic diagram of the suspension mechanism provided by the present invention; Figure 6 This is a three-dimensional structural diagram of the suspension mechanism provided by the present invention after omitting a first half-shaft sleeve, a second half-shaft sleeve and a hook; In the diagram: 100 - Spray booth, 110 - Powder spraying chamber, 111 - Installation port, 120 - Recovery chamber, 200 - Adjustment mechanism, 210 - Fixing plate, 211 - First flow port, 212 - Receiving groove, 220 - Movable plate, 221 - Second flow port, 230 - Drive assembly, 231 - Screw, 232 - Connecting rod, 233 - Handwheel, 300 - Conveying mechanism, 310 - Bracket, 311 - Guide groove, 320 - Chain belt, 330 - Sprocket, 340 - Rotation drive component, 400 - Suspension mechanism, 410 - Seat, 420 - Central shaft, 430 - Gear, 440 - Limiting component, 450 - Upper bushing, 460 - Lower bushing, 470 - Sliding shaft, 480 - Hook, 500 - Transmission mechanism, 510 - Rack, 520 - Transmission plate, 521 - Transmission groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] This invention provides a cold spraying system, the structure of which is as follows: Figure 1 - Figure 4As shown, the system includes a spray booth 100, multiple adjustment mechanisms 200, a ventilation mechanism, a conveying mechanism 300, multiple suspension mechanisms 400, and a powder coating mechanism. The spray booth 100 has a powder coating chamber 110, with openings at both ends along its length. Multiple mounting ports 111 are provided at the bottom of the powder coating chamber 110, and these ports are spaced apart along the length of the chamber. Each adjustment mechanism 200 corresponds to one of the mounting ports 111 and is used to adjust the opening and closing of the mounting ports 111. Size; the inlet end of the exhaust mechanism is connected to each of the mounting ports 111, used to extract air from the powder spraying chamber 110 to recover waste powder; the conveying mechanism 300 can make circular reciprocating motion in the horizontal plane, and has a feeding station and a powder spraying station, the feeding station is located outside the powder spraying chamber 110, and the powder spraying station is located inside the powder spraying chamber 110; each of the suspension mechanisms 400 is arranged at intervals on the conveying mechanism 300, and is used to suspend workpieces; the powder spraying mechanism is arranged at the powder spraying station, and is used to spray powder onto the workpiece.

[0019] In use, the conveying mechanism 300 performs a circular reciprocating motion in the horizontal plane, suspending each workpiece to be coated onto its corresponding suspension mechanism 400 at the loading station. When each suspension mechanism 400 enters the powder spraying chamber 110 in turn and reaches the powder spraying station, the powder spraying mechanism is activated to spray powder onto the workpiece. During powder spraying, the exhaust mechanism is activated to extract air from the powder spraying chamber 110 through each mounting port 111. Waste powder in the powder spraying chamber 110 is simultaneously extracted. During the exhaust operation, the system adjusts the exhaust based on the waste powder recovery situation. Furthermore, by operating each of the adjustment mechanisms 200 in sequence, the opening and closing size of the corresponding mounting ports 111 can be adjusted respectively, so that the opening and closing degree of the middle mounting port 111 is the largest, and the opening and closing degree of each mounting port 111 decreases in sequence from the middle to both ends. This forms a conical exhaust duct in the powder spraying chamber 110, preventing waste powder from overflowing from the openings at both ends of the powder spraying chamber 110, and improving the suction effect of waste powder. This cold spraying system has high powder spraying efficiency, less powder overflow, avoids pollution of the factory environment, and can also recycle waste powder to avoid waste.

[0020] As a preferred embodiment, please refer to Figure 1 and Figure 2 The spray booth 100 also has a recovery chamber 120, and each of the mounting ports 111 is connected to the recovery chamber 120. The inlet end of the exhaust mechanism is connected to the recovery chamber 120 and is used to extract the air in the recovery chamber 120. The inlet end of the exhaust mechanism is connected to each of the mounting ports 111 via the recovery chamber 120, which can form a transfer in the recovery chamber 120 and improve the exhaust recovery effect.

[0021] As a preferred embodiment, please refer to Figure 1 and Figure 2 The powder spraying chamber 110 and the recovery chamber 120 are arranged from top to bottom, so as to facilitate the opening of each of the mounting ports 111 at the bottom of the powder spraying chamber 110.

[0022] As a preferred embodiment, please refer to Figure 2 and Figure 3 The adjusting mechanism 200 includes a fixed plate 210 and a movable plate 220. The fixed plate 210 is disposed at the mounting port 111. The fixed plate 210 has multiple first flow ports 211 arranged in a ring array to form a first ring. The movable plate 220 is placed on the fixed plate 210 and can rotate relative to the fixed plate 210. The rotation axis of the movable plate 220 is coaxial with the first ring. The movable plate 220 has multiple second flow ports 221 arranged in a ring array. The cloth is used to enclose and form a second ring. The second ring is coaxial with the rotation axis of the movable plate 220. During the rotation of the movable plate 220 around its rotation axis, the overlapping area of ​​each of the second flow ports 221 and each of the corresponding first flow ports 211 changes. When it is necessary to adjust the opening degree of the mounting port 111, the movable plate 220 is rotated. During the rotation of the movable plate 220 around its rotation axis, the overlapping area of ​​each of the second flow ports 221 and each of the corresponding first flow ports 211 changes, thereby adjusting the opening degree of the mounting port 111.

[0023] As a preferred embodiment, please refer to Figure 2 and Figure 3 The fixed plate 210 is also provided with a receiving groove 212. The receiving groove 212 is a columnar structure and is coaxial with the first ring. The movable plate 220 is a columnar structure and is rotatably disposed in the receiving groove 212. The movable plate 220 can be received by the receiving groove 212, so as to realize the rotatable connection between the rotating plate and the fixed plate 210.

[0024] As a preferred embodiment, please refer to Figure 2 and Figure 3The adjustment mechanism 200 further includes a drive assembly 230, which is connected to the spray booth 100 and the movable plate 220. The drive assembly 230 is used to drive the movable plate 220 to rotate. When it is necessary to adjust the opening degree of the mounting port 111, the drive assembly 230 can be operated to drive the movable plate 220 to rotate. The movable plate 220 can be driven without the person entering the powder spraying chamber 110, thus avoiding injury to the human body caused by the person entering the powder spraying chamber 110 to operate the movable plate 220.

[0025] As a preferred embodiment, please refer to Figure 2 and Figure 3 The drive assembly 230 includes a screw 231, a connecting rod 232, and a handwheel 233. Multiple screw holes are formed on one side wall of the powder spraying chamber 110. Each screw hole is spaced apart along the length of the powder spraying chamber 110 and extends horizontally along its width. Each screw hole corresponds one-to-one with each mounting port 111. Each screw 231 passes through and is screwed into each screw hole. One end of the connecting rod 232 is hinged to the inner end of the screw 231, and the other end is hinged to the movable plate 220. The handwheel 233 is connected to the screw 231. The outer end of the 1 is fixedly connected. When it is necessary to adjust the opening degree of the mounting port 111, a person holds the handwheel 233 and drives the screw 231 to rotate in the forward or reverse direction. Since the screw 231 is screwed to the spray booth 100 through the screw hole, when the screw 231 rotates in the forward or reverse direction, the screw 231 can reciprocate along its own axis, thereby driving the movable plate 220 to rotate in the forward or reverse direction through the connecting rod 232. The person does not need to enter the powder spraying chamber 110 to drive the movable plate 220, avoiding injury to the human body caused by operating the movable plate 220 in the powder spraying chamber 110.

[0026] In a preferred embodiment, the exhaust mechanism is a cyclone dust collector, and the exhaust pipe of the cyclone dust collector is connected to the recovery chamber 120. The exhaust mechanism is existing technology and will not be described in detail in this solution. The exhaust mechanism is not shown in the figure.

[0027] As a preferred embodiment, please refer to Figure 1 and Figure 4The conveying mechanism 300 includes a support 310, a chain belt 320, at least three sprockets 330, and a rotation drive 340. Each sprocket 330 is rotatably mounted on the support 310 via a rotary shaft, forming a polygonal structure. The chain belt 320 is closed and wound around each sprocket 330. The output end of the rotation drive 340 is coaxially and fixedly connected to the rotary shaft of one of the sprockets 330, for driving the corresponding sprocket 330 to rotate. Each suspension mechanism 400 is connected to the chain belt 320. When the rotation drive 340 is activated, its output end rotates, which can drive the connected sprocket 330 to rotate. Through the transmission action of the chain belt 320, each sprocket 330 can be driven to rotate synchronously. Conversely, the chain belt 320 can achieve circular reciprocating motion in the horizontal plane.

[0028] As a preferred embodiment, please refer to Figure 1 and Figure 4 The bracket 310 is a closed structure.

[0029] As a preferred embodiment, please refer to Figure 4 and Figure 5 The suspension mechanism 400 includes a seat 410, a central shaft 420, a gear 430, a limiting member 440, an upper bushing 450, a lower bushing 460, a sliding shaft 470, and a hook 480. The seat 410 is fixedly connected to the chain belt 320 and slidably connected to the bracket 310. The central shaft 420 is vertically arranged, with its top rotatably connected to the seat 410 and rotatable around its own axis. The gear 430 is fixedly sleeved on the upper end of the central shaft 420. The limiting member 440 is arranged on the side of the central shaft 420, with its top rotatably connected to the chain belt 320. The seat body 410 is fixedly connected. The upper bushing 450 is slidably sleeved on the central shaft 420 and is also slidably connected to the limiting member 440. It can move up and down along the central shaft 420. The lower bushing 460 is slidably sleeved on the central shaft 420. Its top is also rotatably connected to the bottom of the upper bushing 450 and can only move up and down along the central shaft 420. The sliding shaft 470 is horizontally arranged, and one end is fixedly connected to the upper bushing 450. The hook 480 is fixedly connected to the lower bushing 460 and is used to suspend the workpiece.

[0030] As a preferred embodiment, please refer to Figure 5 and Figure 6The bracket 310 has a closed guide groove 311. The shape of the guide groove 311 is the same as the winding shape of the chain belt 320. The seat 410 is slidably connected to the guide groove 311. The guide groove 311 can provide support and guidance for the seat 410, thereby improving the installation strength and movement stability of the seat 410.

[0031] As a preferred embodiment, please refer to Figure 5 and Figure 6 The limiting member 440 may be selected from at least two limiting shafts or a limiting rod. When a limiting rod is selected, the cross-section of the limiting rod is a polygonal structure.

[0032] As a preferred embodiment, please refer to Figure 5 and Figure 6 The upper bushing 450 has an annular connecting groove on its bottom surface, and the top of the lower bushing 460 is rotatably connected to the connecting groove.

[0033] As a preferred embodiment, please refer to Figure 5 and Figure 6 The upper bushing 450 includes two first half bushings, which are detachably and fixedly connected to form the upper bushing 450, so as to facilitate the rotational connection of the top of the lower bushing 460 with the connecting groove.

[0034] As a preferred embodiment, please refer to Figure 5 and Figure 6 A key is provided on the lower section of the central shaft 420, and a groove is provided on the inner wall of the lower bushing 460, which is slidably connected to the key through the groove, so that the lower bushing 460 can only move up and down along the central shaft 420. When the central shaft 420 rotates around its own axis, it can drive the lower bushing 460 to rotate.

[0035] As a preferred embodiment, please refer to Figure 5 and Figure 6 The lower bushing 460 includes two second half bushings, which are detachably and fixedly connected to form the lower bushing 460, so that the groove of the lower bushing 460 can be slidably connected to the key on the central shaft 420.

[0036] As a preferred embodiment, please refer to Figure 4 and Figure 5The cold spray coating system further includes a transmission mechanism 500, which is located at the powder spraying station and is connected to the suspension mechanism 400 that reaches the powder spraying station. This transmission mechanism converts the horizontal movement of the suspension mechanism 400 at the powder spraying station into rotation and vertical movement. Since the suspension mechanism 400 connects to the transmission mechanism 500 after entering the powder spraying station, the transmission mechanism 500 can convert the horizontal movement of the suspension mechanism 400 at the powder spraying station into rotation and vertical movement. This allows the workpiece entering the powder spraying station to rotate and move vertically while moving horizontally. When the workpiece is large, the rotation and vertical movement of the workpiece can be used to achieve uniform painting, improving the painting effect.

[0037] As a preferred embodiment, please refer to Figure 4 and Figure 5The transmission mechanism 500 includes a rack 510 and a transmission plate 520. The rack 510 is horizontally arranged along the moving direction of the suspension mechanism 400 and is fixedly connected to the spray booth 100. When the suspension mechanism 400 reaches the powder coating station, the gear 430 meshes with the rack 510. The transmission plate 520 is horizontally arranged along the moving direction of the suspension mechanism 400 and is fixedly connected to the spray booth 100. A transmission groove 521 extending along its length and open at both ends is formed on the transmission plate 520. It has a broken-line structure with a highest and lowest position. When the suspension mechanism 400 reaches the powder spraying station, the other end of the sliding shaft 470 slides into the transmission groove 521. When the suspension mechanism 400 reaches the powder spraying station, the gear 430 meshes with the rack 510, and the other end of the sliding shaft 470 slides into the transmission groove 521. When the suspension mechanism 400 continues to move horizontally, the gear 430 will rotate under the action of the rack 510, thereby driving the central shaft 420 to rotate. The upper bushing 450 is restricted by the limiting member 440, preventing it from rotating. However, the rotation of the central shaft 420 within the upper bushing 450 is undisturbed. The lower bushing 460 is restricted by the groove and the key, allowing it to move only up and down along the central shaft 420. When the central shaft 420 rotates, the lower bushing 460 rotates synchronously, thereby causing the hook 480 to rotate and the workpiece to rotate. As the suspension mechanism 400 continues to move horizontally, the sliding shaft 4... 70 moves up and down under the action of the transmission groove 521. Since the upper bushing 450 can move up and down along the central axis 420, it can be driven to move up and down through the sliding shaft 470. Since the lower bushing 460 can only move up and down along the central axis 420, and the top of the lower bushing 460 is rotatably connected to the bottom of the upper bushing 450, when the upper bushing 450 moves up and down, it will drive the lower bushing 460 to move up and down, thereby enabling the hook 480 to move up and down, thus realizing the up and down movement of the workpiece.

[0038] As a preferred embodiment, the powder spraying mechanism is prior art. For details, please refer to the cold spraying device and cold spraying equipment disclosed in 202211269948.8. It will not be described in detail in this solution. The powder spraying mechanism is not shown in the figure.

[0039] To better understand this invention, the following is combined with... Figure 1 - Figure 6 The working principle of the technical solution of the present invention will be described in detail below: In use, the rotation drive 340 is activated, and its output end rotates, driving the connected sprocket 330 to rotate. Through the transmission action of the chain belt 320, each sprocket 330 rotates synchronously. Conversely, the chain belt 320 can perform circular reciprocating motion in the horizontal plane, thereby driving each suspension mechanism 400 to perform circular reciprocating motion in the horizontal plane. At the loading station, each workpiece to be coated is suspended on its corresponding hook 480. When each suspension mechanism 400 enters the powder spraying chamber 110 in turn and reaches the powder spraying station, the powder spraying mechanism is activated, spraying powder onto the workpiece. During the powder spraying operation, the exhaust fan... When the mechanism is activated, air can be extracted from the powder spraying chamber 110 through each of the mounting ports 111. Waste powder in the powder spraying chamber 110 is extracted simultaneously. During the exhaust operation, according to the waste powder recovery, each of the adjustment mechanisms 200 is operated sequentially to adjust the opening and closing size of the corresponding mounting ports 111. The central mounting port 111 has the largest opening, and the opening and closing size of each mounting port 111 decreases sequentially from the middle to both ends. This forms a conical exhaust duct in the powder spraying chamber 110, preventing waste powder from overflowing from the openings at both ends of the powder spraying chamber 110 and improving the suction effect of waste powder. When it is necessary to adjust the opening and closing size of the mounting ports 111, the handwheel is held. 233, driving the screw 231 to rotate in the forward or reverse direction. Since the screw 231 is screwed to the spray booth 100 via the screw hole, when the screw 231 rotates in the forward or reverse direction, the screw 231 can reciprocate along its own axis, thereby driving the movable plate 220 to rotate in the forward or reverse direction via the connecting rod 232. The movable plate 220 can be driven without a person entering the powder spraying chamber 110, avoiding injury to the human body caused by operating the movable plate 220 inside the powder spraying chamber 110. When the suspension mechanism 400 reaches the powder spraying station, the gear 430 meshes with the rack 510, and the other end of the sliding shaft 470 slides into the transmission groove 521. When the suspension mechanism 400 continues to move horizontally, the gear 430 rotates under the action of the rack 510, thereby driving the central shaft 420 to rotate. Because the upper bushing 450 is restricted by the limiting member 440, it cannot rotate. However, the rotation of the central shaft 420 within the upper bushing 450 is undisturbed. Furthermore, because the lower bushing 460 is restricted by the groove and the key, it can only move up and down along the central shaft 420. When the central shaft 420 rotates, the lower bushing 460 rotates synchronously, thereby causing the hook 480 to rotate, achieving the rotation of the workpiece. As the suspension mechanism 400 continues to move horizontally...The sliding shaft 470 moves up and down under the action of the transmission groove 521. Since the upper bushing 450 can move up and down along the central shaft 420, it can be driven to move up and down via the sliding shaft 470. The lower bushing 460 can only move up and down along the central shaft 420, and its top is rotatably connected to the bottom of the upper bushing 450. When the upper bushing 450 moves up and down, it drives the lower bushing 460 to move up and down, which in turn causes the hook 480 to move up and down, thus enabling the workpiece to move up and down. This allows the workpiece entering the powder coating station to move horizontally while also rotating and moving up and down. When the workpiece is large, the rotation and up-and-down movement of the workpiece can achieve uniform painting, improving the painting effect. This cold spray coating system has high powder coating efficiency, minimal powder overflow, avoids polluting the factory environment, and can also recycle waste powder, preventing waste.

[0040] The cold spraying system provided by this invention has the following beneficial effects: (1) During the exhaust operation, according to the waste powder recovery situation, each of the adjustment mechanisms 200 is operated in sequence to adjust the opening and closing size of the corresponding installation port 111 respectively, so that the opening and closing degree of the middle installation port 111 is the largest, and the opening and closing degree of each installation port 111 is reduced in sequence from the middle to both ends, thereby forming a cone-shaped exhaust channel in the powder spraying chamber 110, preventing waste powder from overflowing from the openings at both ends of the powder spraying chamber 110, and improving the suction effect of waste powder; (2) When the suspension mechanism 400 enters the powder spraying station, the suspension mechanism 400 will be connected to the transmission mechanism 500. The transmission mechanism 500 can convert the horizontal movement of the suspension mechanism 400 in the powder spraying station into the rotation and vertical movement of the suspension mechanism 400. This allows the workpiece entering the powder spraying station to rotate and move vertically while moving horizontally. When the workpiece is large, the workpiece can be uniformly sprayed with paint by relying on the rotation and vertical movement of the workpiece, which improves the painting effect of the workpiece. (3) This cold spraying system has high powder spraying efficiency, less powder overflow, avoids polluting the factory environment, and can also recycle waste powder to avoid waste powder.

[0041] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cold spraying system, characterized in that, include: A spray booth has a powder spraying chamber, both ends of which are open along the length of the powder spraying chamber. The bottom of the powder spraying chamber has multiple mounting ports, and each mounting port is spaced apart along the length of the powder spraying chamber. Multiple adjustment mechanisms, each corresponding to one of the mounting ports, are used to adjust the opening and closing size of the mounting ports; The exhaust mechanism, whose inlet end is connected to each of the aforementioned installation ports, is used to extract the air from the powder spraying chamber in order to recover waste powder; The conveying mechanism can make circular reciprocating motion in a horizontal plane. It has a feeding station and a powder spraying station. The feeding station is located outside the powder spraying chamber, and the powder spraying station is located inside the powder spraying chamber. Multiple suspension mechanisms are arranged at intervals on the conveying mechanism for suspending workpieces; A powder spraying mechanism is installed at the powder spraying station and is used to spray powder onto the workpiece.

2. The cold spraying system according to claim 1, characterized in that, The spray booth also has a recovery chamber, and each of the installation ports is connected to the recovery chamber. The inlet end of the exhaust mechanism is connected to the recovery chamber to extract the air from the recovery chamber.

3. The cold spraying system according to claim 1, characterized in that, The adjusting mechanism includes a fixed plate and a movable plate. The fixed plate is disposed at the mounting port and has multiple first flow ports arranged in a ring array to form a first ring. The movable plate is placed on the fixed plate and can rotate relative to the fixed plate. The rotation axis of the movable plate is coaxial with the first ring. The movable plate has multiple second flow ports arranged in a ring array to form a second ring. The second ring is coaxial with the rotation axis of the movable plate. During the rotation of the movable plate around its rotation axis, the overlap area between each second flow port and each corresponding first flow port changes.

4. The cold spraying system according to claim 3, characterized in that, The fixed plate is also provided with a receiving groove, which is a columnar structure and coaxial with the first ring. The movable plate is a columnar structure and is rotatably disposed in the receiving groove.

5. The cold spraying system according to claim 3, characterized in that, The adjustment mechanism also includes a drive assembly, which is connected to the spray booth and the movable plate, and is used to drive the movable plate to rotate.

6. The cold spraying system according to claim 5, characterized in that, The drive assembly includes a screw, a connecting rod, and a handwheel. Multiple screw holes are provided on one side wall of the powder spraying chamber, with each screw hole spaced apart along the length of the powder spraying chamber and extending horizontally along the width of the powder spraying chamber. Each screw hole corresponds one-to-one with each mounting port. Each screw passes through each screw hole and is screwed into one of them. One end of the connecting rod is hinged to the inner end of the screw, and the other end of the connecting rod is hinged to the movable plate. The handwheel is fixedly connected to the outer end of the screw.

7. The cold spraying system according to claim 1, characterized in that, The conveying mechanism includes a support frame, a chain belt, at least three sprockets, and a rotation drive. Each sprocket is rotatably mounted on the support frame via a rotary shaft and forms a polygonal structure. The chain belt is closed and wound around each sprocket. The output end of the rotation drive is coaxially and fixedly connected to the rotary shaft of one of the sprockets to drive the corresponding sprocket to rotate. Each suspension mechanism is connected to the chain belt.

8. The cold spraying system according to claim 7, characterized in that, The suspension mechanism includes a base, a central shaft, a gear, a limiting member, an upper bushing, a lower bushing, a sliding shaft, and a hook. The base is fixedly connected to the chain and slidably connected to the bracket. The central shaft is vertically arranged, with its top rotatably connected to the base and capable of rotating around its own axis. The gear is fixedly sleeved on the upper end of the central shaft. The limiting member is arranged on the side of the central shaft, with its top fixedly connected to the base. The upper bushing is slidably sleeved on the central shaft and slidably connected to the limiting member, and can move up and down along the central shaft. The lower bushing is slidably sleeved on the central shaft, with its top rotatably connected to the bottom of the upper bushing and can only move up and down along the central shaft. The sliding shaft is horizontally arranged, with one end fixedly connected to the upper bushing. The hook is fixedly connected to the lower bushing and is used to suspend workpieces.

9. The cold spraying system according to claim 8, characterized in that, It also includes a transmission mechanism, which is located at the powder spraying station and is used to connect with the suspension mechanism that reaches the powder spraying station, so as to convert the horizontal movement of the suspension mechanism at the powder spraying station into the rotation and vertical movement of the suspension mechanism.

10. The cold spraying system according to claim 9, characterized in that, The transmission mechanism includes a rack and a transmission plate. The rack is horizontally arranged along the moving direction of the suspension mechanism and is fixedly connected to the spray booth. When the suspension mechanism reaches the powder spraying station, the gear meshes with the rack. The transmission plate is horizontally arranged along the moving direction of the suspension mechanism and is fixedly connected to the spray booth. The transmission plate has a transmission groove extending along its length and open at both ends. The transmission groove has a zigzag structure and has a highest position and a lowest position. When the suspension mechanism reaches the powder spraying station, the other end of the sliding shaft slides into the transmission groove.

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