Vertical powder spraying device for aluminum strip machining

Abstract

The invention provides a vertical powder spraying device for aluminum strip machining. The vertical powder spraying device comprises a blocking cover and a powder spraying device, and the powder spraying device is arranged on one side of an opening of the blocking cover; the powder spraying device comprises a driving mechanism, a supporting frame and a powder supply mechanism, the supporting frame is driven by the driving mechanism to vertically move, a plurality of spray heads extending into the blocking cover are installed on the supporting frame, and the powder supply mechanism is used for supplying powder to the spray heads; comprising a suction device, the suction device comprises at least two exhaust pipes serving as exhaust components, and a plurality of exhaust holes which are evenly formed at intervals in the vertical direction are formed in the sides, close to the interior of a blocking cover, of the exhaust pipes; the exhaust pipe is sleeved with a blocking structure, the middle of the blocking structure is connected to the supporting frame, and the blocking structure moves along with the supporting frame and is used for blocking the exhaust hole in the area range close to the nozzle. According to the air exhaust device, a large air exhaust range can be provided, follow-up shielding is conducted on the air exhaust part of a spraying area, the situation that the spraying action is affected by the air exhaust action is effectively prevented, the overall spraying quality is improved, and powder recycling is achieved.

Description

Technical Field

[0001] This invention relates to the field of electrostatic spraying, and more specifically, to a vertical powder spraying device for aluminum strip processing. Background Technology

[0002] In the aluminum strip coating process, vertical electrostatic powder coating equipment is commonly used. This equipment uses a lifting and moving powder spraying unit to comprehensively coat the aluminum strip. Currently, most of these devices are equipped with powder recovery systems. However, the suction airflow of traditional powder recovery systems can significantly interfere with the coating area. This interference may lead to:

[0003] Uneven coating: The suction airflow alters the flight trajectory of powder particles, resulting in uneven coating thickness on the aluminum strip surface and defects such as orange peel and sagging; Reduced powder utilization: Some powder that should have adhered to the workpiece is prematurely removed, thus reducing the effective utilization rate; This affects the overall processing quality and therefore needs improvement. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a vertical powder coating device for aluminum strip processing, which can provide a large air extraction range and perform follow-up shielding on the air extraction part of the coating area, effectively preventing the air extraction action from affecting the coating action, improving the overall coating quality, and also realizing powder recovery.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This invention provides a vertical powder coating device for aluminum strip processing, including a baffle and a powder spraying device, with the powder spraying device located on the open side of the baffle. The powder spraying device includes a drive mechanism, a support frame, and a powder supply mechanism. The support frame is mounted on the drive mechanism and is driven to move vertically by the drive mechanism. Multiple nozzles extending into the baffle are mounted on the support frame. The powder supply mechanism is used to supply powder to the nozzles. The device also includes a suction device, which includes at least two suction pipes used as suction components. The suction pipes have multiple suction holes evenly spaced vertically on the side near the inside of the baffle. A blocking structure is fitted onto the suction pipes, with the middle part of the blocking structure connected and mounted on the support frame. The blocking structure moves with the support frame and is used to block the suction holes in the area near the nozzles.

[0007] In a preferred embodiment of the present invention, the suction device includes a suction pump, a filter, and at least two suction pipes. The suction pipes are symmetrically distributed on both sides of the open opening of the baffle. The suction pipes are connected to the filter via a manifold, and the filter is connected to the suction pump via an air supply pipe.

[0008] In a preferred embodiment of the present invention, the blocking structure includes a bracket, a first blocking component installed on the top of the bracket, and a second blocking component installed on the bottom of the bracket; the bracket is bolted to a support frame; the first blocking component and the second blocking component are expandable and deformable when blocked at the ends.

[0009] In a preferred embodiment of the present invention, the bracket includes a support ring, the inner diameter of which is adapted to the diameter of the suction pipe, and the support ring is slidably sleeved on the suction pipe; the first blocking assembly includes an inner support component and a corrugated pipe, the inner support component is provided with a slip ring, the slip ring is located at the end of the support component away from the support ring, the inner diameter of the slip ring is adapted to the diameter of the suction pipe, and the slip ring is slidably sleeved on the suction pipe; one end of the corrugated pipe is mounted on the bracket, and the other end is mounted on the slip ring; the second blocking assembly has the same structure as the first blocking assembly, but is mounted in reverse at the bottom of the bracket.

[0010] In a preferred embodiment of the present invention, the inner support component includes a slip ring. Multiple guide rods arranged in a circular array around the center are fixedly mounted on the wall surface of the slip ring near the support ring. The ends of the guide rods are provided with threaded posts. The support ring has multiple guide holes arranged in a circular array around the center, the number of guide holes being twice the number of guide rods. The diameter of the guide holes matches the diameter of the guide rods, and their positions correspond. The guide rods pass through the guide holes into the support ring, and the threaded posts at their ends are fitted with nuts for preventing detachment. Each guide rod is fitted with a spring, with both ends of the spring abutting against the walls of the support ring and the slip ring, respectively. The guide rods of the first blocking component and the second blocking component are staggered and interleaved, correspondingly passing through the corresponding guide holes.

[0011] In a preferred embodiment of the present invention, when the first blocking component and the second blocking component are not affected by external forces, the distance from the blocking end to the height plane of the nozzle is 50cm to 100cm.

[0012] In a preferred embodiment of the present invention, the cross-section of the baffle is an isosceles triangular structure; the number of exhaust pipes is two, distributed on both sides of the opening of the baffle; the blocking structure is symmetrically installed on opposite sides of the support frame.

[0013] The beneficial effects of this invention are as follows:

[0014] The present invention provides a vertical powder coating device for aluminum strip processing, including a baffle, a powder spraying device and a suction device. The suction device includes at least two suction pipes used as suction components. The suction pipes are provided with a plurality of suction holes evenly spaced in the vertical direction on the side near the inside of the baffle, which can provide a large suction range and ensure that the powder drifting outward can be effectively recovered.

[0015] The suction pipe is fitted with a blocking structure, and the middle part of the blocking structure is connected to the support frame. The blocking structure moves with the support frame and is used to block the suction holes in the vicinity of the nozzle, so as to achieve the effect of following the action of blocking. This effectively prevents the suction action from affecting the spraying action, and can realize the recovery of powder and maintain the overall spraying quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a vertical powder coating device for aluminum strip processing provided in a specific embodiment of the present invention;

[0017] Figure 2 This is a three-dimensional unfolded structural diagram of a vertical powder coating device for aluminum strip processing provided in a specific embodiment of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the blocking structure provided in a specific embodiment of the present invention;

[0019] Figure 4 This is a three-dimensional unfolded structural diagram of the blocking structure provided in a specific embodiment of the present invention;

[0020] Figure 5 This is a cross-sectional view of the blocking structure provided in a specific embodiment of the present invention.

[0021] In the picture:

[0022] 100. Baffle; 200. Powder spraying device; 210. Drive mechanism; 220. Support frame; 230. Powder supply mechanism; 240. Nozzle;

[0023] 300. Suction device; 310. Suction pipe; 311. Suction port; 320. Suction pump; 330. Filter; 340. Manifold; 350. Gas delivery pipe;

[0024] 400, blocking structure; 410, first blocking assembly; 411, inner support component; 4111, slip ring; 4112, guide rod; 412, bellows; 420, second blocking assembly; 430, bracket; 431, support ring; 432, guide hole; 440, spring. Detailed Implementation

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 , Figure 2As shown in the figure, a vertical powder coating device for aluminum strip processing is disclosed in a specific embodiment of the present invention, including a baffle 100 and a powder spraying device 200. The powder spraying device is located on the open side of the baffle. The powder spraying device 200 includes a driving mechanism 210, a support frame 220, and a powder supply mechanism 230. The support frame is mounted on the driving mechanism and is driven to move vertically by the driving mechanism. A plurality of nozzles 240 extending into the baffle 100 are mounted on the support frame 220. The powder supply mechanism is used to supply powder to the nozzles. The device also includes a suction device 300, which includes at least two suction pipes 310 used as suction components. The suction pipes 310 are provided with a plurality of suction holes 311 evenly spaced in the vertical direction on the side near the inside of the baffle 100. A blocking structure 400 is sleeved on the suction pipes 310. The middle part of the blocking structure 400 is connected and mounted on the support frame 220. The blocking structure moves with the support frame and is used to block the suction holes in the area near the nozzles.

[0027] The above-mentioned vertical powder coating device for aluminum strip processing includes at least two suction pipes used as suction components. The suction pipes are provided with multiple suction holes evenly spaced in the vertical direction on the side near the inside of the baffle, which can provide a large suction range and ensure that the powder drifting outward can be effectively recovered.

[0028] The suction pipe is fitted with a blocking structure, which moves with the support frame to block the suction holes in the vicinity of the nozzle, achieving a follow-up blocking effect. This effectively prevents the suction action from affecting the spraying action, enabling powder recovery and maintaining the overall spraying quality.

[0029] It should be noted that the drive mechanism, support frame, powder supply mechanism and nozzle mentioned in the above powder spraying device are all common structural devices in vertical powder spraying equipment, which are well known to those skilled in the art, and will not be described in detail.

[0030] Furthermore, the suction device 300 includes an air pump 320, a filter 330, and at least two air extraction pipes 310. The air extraction pipes 310 are symmetrically distributed on both sides of the open opening of the baffle 100. The air extraction pipes 310 are connected to the filter 330 via a manifold 340, and the filter 330 is connected to the air pump 320 via an air supply pipe 340. A flange is fixed to the outer side of the bottom end of the air extraction pipe and is fixed to the bottom support plate of the baffle via the flange. The top end of the air extraction pipe penetrates the top baffle plate of the baffle. The ends of the air extraction pipe are all connected to the first manifold, which is then connected to the air inlet of the filter via a second manifold. The air outlet of the filter is connected to the air inlet of the air pump via an air supply pipe. The air outlet of the air pump is connected to the waste gas treatment equipment via a pipeline to achieve the required powder recovery and waste gas treatment, and to prevent the sprayed powder and waste gas from spreading everywhere. It should be noted that the filter, air pump, and filter are all common structural devices, and will not be described in detail.

[0031] Furthermore, such as Figures 3 to 5 As shown, the blocking structure 400 includes a bracket 430, a first blocking component 410 mounted on the top of the bracket 430, and a second blocking component 420 mounted on the bottom of the bracket 430. The bracket 430 is bolted to the support frame 220. The first and second blocking components are telescopically deformable when their ends are blocked. The first and second blocking components extend away from the bracket, which can increase the blocking range. Both are telescopically movable. Since the end of the blocking component is higher or lower than the support frame, when the support frame moves to a higher or lower position, the end of the blocking component will inevitably contact the external component first. The blocking component is designed to be telescopically movable, so it will not affect the movement of the support frame, and therefore will not affect the spraying range.

[0032] Furthermore, the bracket 430 includes a support ring 431, the inner diameter of which is adapted to the diameter of the suction pipe 310, and the support ring is slidably sleeved on the suction pipe; the first blocking assembly 410 includes an inner support component 411 and a bellows 412, the inner support component 411 is provided with a slip ring 4111, the slip ring is located at the end of the support component away from the support ring, the inner diameter of the slip ring 4111 is adapted to the diameter of the suction pipe 310, and the slip ring is slidably sleeved on the suction pipe; one end of the bellows 412 is installed on the bracket 430, and the other end is installed on the slip ring 4111; the second blocking assembly 420 has the same structure as the first blocking assembly 410, and is installed in the opposite direction at the bottom of the bracket; the bellows provides effective shielding and protection, and also provides the necessary telescopic movement conditions; and this structural component is a commercially available structure that can be directly purchased and used.

[0033] Furthermore, the inner support component 411 includes a slip ring 4111. Multiple guide rods 4112, arranged in a circular array around the center, are fixedly mounted on the wall surface of the slip ring 4111 near the support ring. The ends of the guide rods are threaded post. The support ring 431 has multiple guide holes 432 arranged in a circular array around the center. The number of guide holes 432 is twice the number of guide rods 4112. The diameter of the guide holes matches the diameter of the guide rods, and their positions correspond. The guide rods 4112 pass through the guide holes 432 and penetrate the support ring 431. Nuts for preventing detachment are installed on the threaded post at their ends. A spring 440 is fitted onto each guide rod 4112. The two ends of 0 abut against the walls of the support ring 431 and the slip ring 4111 respectively; the guide rods of the first blocking component and the second blocking component are staggered and correspondingly pass through the corresponding guide holes; this inner support component can form a stable support force inside the bellows, and maintain the initial unfolded shape of the bellows and maintain a sufficient shielding range when it is not subjected to external force; when the slip ring is obstructed, it will compress the spring, and the bellows will also be compressed accordingly, without affecting the continued movement of the support frame; and when the external force is released, the slip ring will reset under the action of the spring, and also drive the bellows to return to the unfolded position, providing and maintaining the required shielding range.

[0034] Furthermore, when the first blocking component 410 and the second blocking component 420 are not affected by external forces, the distance from the blocking end to the height plane of the nozzle is 50cm to 100cm, so that the blocking area is within a suitable range, which can provide sufficient blocking range and also make the suction force of the remaining unblocked parts sufficient to suck up the powder that is drifting outward.

[0035] Furthermore, the cross-section of the baffle 100 is an isosceles triangular structure, which, due to the constraints on the sides, top, and bottom, allows the airflow and powder to drift out only towards the open opening. The number of suction pipes 310 is two, distributed on both sides of the open opening of the baffle 100, which can effectively suck up and recover the drifting powder. The blocking structure is symmetrically installed on opposite sides of the support frame, matching the suction pipes, and can move smoothly with the support frame.

[0036] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A vertical powder coating device for aluminum strip processing, comprising a baffle and a powder coating device, the powder coating device being disposed on the open side of the baffle; the powder coating device comprising a drive mechanism, a support frame, and a powder supply mechanism, the support frame being mounted on the drive mechanism and driven to move vertically by the drive mechanism, the support frame being equipped with a plurality of nozzles extending into the baffle, and the powder supply mechanism being used to supply powder to the nozzles; characterized in that: It includes a suction device, which includes at least two suction pipes used as suction components, and the suction pipes have multiple suction holes evenly spaced in the vertical direction on the side near the inside of the baffle. A blocking structure is fitted onto the air extraction pipe. The middle part of the blocking structure is connected to and installed on the support frame. The blocking structure moves with the support frame and is used to block the air extraction holes in the vicinity of the nozzle.

2. The vertical powder coating device for aluminum strip processing according to claim 1, characterized in that: The suction device includes a suction pump, a filter, and at least two suction pipes. The suction pipes are symmetrically distributed on both sides of the open opening of the baffle. The suction pipes are connected to the filter via a manifold, and the filter is connected to the suction pump via an air supply pipe.

3. The vertical powder coating device for aluminum strip processing according to claim 2, characterized in that: The blocking structure includes a bracket, a first blocking component mounted on top of the bracket, and a second blocking component mounted on the bottom of the bracket; The bracket is bolted to the support frame; the first and second blocking components can expand and contract when blocked at the ends.

4. The vertical powder coating device for aluminum strip processing according to claim 3, characterized in that: The bracket includes a support ring, the inner diameter of which is adapted to the diameter of the suction pipe, and the support ring is slidably sleeved on the suction pipe. The first blocking assembly includes an inner support component and a bellows. The inner support component is provided with a slip ring, which is located at the end of the support component away from the support ring. The inner wall diameter of the slip ring is adapted to the diameter of the suction pipe, and the slip ring is slidably sleeved on the suction pipe. One end of the bellows is mounted on the bracket, and the other end is mounted on the slip ring; The second blocking assembly has the same structure as the first blocking assembly, but is installed in reverse at the bottom of the bracket.

5. A vertical powder coating device for aluminum strip processing according to claim 4, characterized in that: The inner support component includes a slip ring, and multiple guide rods arranged in a circular array around the center are fixed on the wall surface of the slip ring near the support ring. The ends of the guide rods are provided with threaded posts. The ring is provided with multiple guide holes arranged in a circular array around the center. The number of guide holes is twice the number of guide rods. The diameter of the guide holes is matched with the diameter of the guide rods, and their distribution positions correspond. The guide rod passes through the guide hole and passes through the support ring, and a nut for preventing loosening is installed on the threaded post at the end; a spring is sleeved on each guide rod, and the two ends of the spring abut against the wall of the support ring and the slip ring respectively; The guide rods of the first blocking component and the second blocking component are misaligned and spaced apart, corresponding to the guide holes that pass through them.

6. A vertical powder coating device for aluminum strip processing according to claim 4, characterized in that: When not affected by external forces, the distance between the end of the first blocking component and the height plane of the nozzle is 50cm to 100cm.

7. A vertical powder coating device for aluminum strip processing according to claim 3, characterized in that: The cross-section of the shield has an isosceles triangular structure; There are two exhaust pipes, which are located on both sides of the open opening of the baffle. The blocking structures are symmetrically installed on opposite sides of the support frame.

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