A zinc spraying device for aluminum alloy flat tube surface

Abstract

The utility model relates to a zinc spraying device on the surface of an aluminum alloy flat tube, including a zinc wire conveying device, a steering device, an arc wire feeder, a spray box and a dust removal device; the zinc wire conveying device is arranged on a base; the zinc wire conveying device is in two groups; the steering device includes a pulley bracket, two groups of adjusting pulley groups are arranged on the front side of the pulley bracket, and two groups of first pulleys are arranged on the top surface of the pulley bracket; a connecting bracket is arranged on the outer side of the arc wire feeder, and the zinc wires in the two groups of the zinc wire conveying devices pass through the first pulley respectively, and the second pulley turns and is connected to the arc wire feeder and the spray box through a guide cylinder; the dust removal device is arranged on the spray box. Compared with the prior art, a brand-new zinc spraying device on the surface of an aluminum alloy flat tube is designed, which includes a zinc wire conveying device, a steering device, and a dust removal device for an arc wire feeder. An adjusting pulley group is arranged on the zinc wire conveying device to adjust the tightness of the zinc wire. The overall design is reasonable and the layout is compact.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts processing, and specifically relates to a zinc spraying device on the surface of an aluminum alloy flat tube. Background Art

[0002] The microchannel zinc-sprayed aluminum flat tube chamber uses refined aluminum rods, is hot-extruded, and has surface zinc-sprayed for corrosion protection. The microchannel aluminum tube (also known as "parallel flow aluminum flat tube") is a thin-walled porous flat tubular material and is a key material for the new generation of parallel flow microchannel air-conditioning heat exchangers.

[0003] After searching, it was found that on December 28, 2020, the applicant Chuzhou University designed an "Arc Zinc Spraying Device for Air Conditioning Aluminum Flat Tubes". Its specific structure includes a unwinding device, a cooling water trough and a winding device arranged in sequence, and also includes: a zinc spraying box, which is arranged between the winding device and the cooling water trough; an adjusting device, which is located between the zinc spraying box and the unwinding device, and the tension of the aluminum flat tube is adjusted under the operation of the adjusting device; a wiping assembly, which is arranged on the side of the cooling water trough facing the winding device, and the moisture on the surface of the aluminum flat tube is wiped when the aluminum flat tube passes through the wiping assembly, but this spraying device is only suitable for large-size aluminum alloy flat tube structures, and is not suitable for small-size ones; we also found that on April 2, 2014, the applicant Shanghai Liangshi Spraying Equipment Co., Ltd. designed the "Multi-branch Microchannel Aluminum Flat Tube Simultaneous Online Zinc Spraying and Dust Removal Device". The applicant independently designed a structure different from it and specially applied for this invention. Utility Model Content

[0004] In order to solve the above-mentioned problems in the prior art, the utility model provides a zinc spraying device on the surface of an aluminum alloy flat tube to improve the above-mentioned deficiencies.

[0005] The utility model relates to a device for spraying zinc on the surface of an aluminum alloy flat tube, comprising a zinc wire conveying device, a steering device, an arc wire feeder, a spray box and a dust removal device; the zinc wire conveying device is arranged on a base; the zinc wire conveying device is in two groups; the steering device comprises a pulley bracket, two groups of adjusting pulley groups are arranged on the front side of the pulley bracket, and two groups of first pulleys are arranged on the top surface of the pulley bracket; a connecting bracket is arranged on the outer side of the arc wire feeder, and a guide cylinder is arranged on the connecting bracket; the zinc wires in the two groups of the zinc wire conveying devices pass through the first pulley respectively, the second pulley is turned and connected to the arc wire feeder and the spray box through the guide cylinder; the dust removal device is arranged on the spray box.

[0006] Furthermore, two straight-through pipes are arranged in the guide cylinder, and lubricating inner pipes are arranged on the inner walls of the straight-through pipes.

[0007] Furthermore, the spray box is also provided with a power supply, a compressed air channel, an air compressor and a control system. The air compressor is connected to the inlet of the compressed air channel through an input air pipe, and the outlet of the compressed air channel is connected to the spray gun head of the arc sprayer through an output air pipe; the arc sprayer is electrically connected through the control system.

[0008] Furthermore, a compressed air duct is arranged at the center of the spray gun head of the spray box, relatively inclined hollow conductive rods are arranged on both sides of the compressed air duct, zinc wires are respectively arranged in the compressed air ducts, and a spray gun cover is arranged at the front end of the spray gun head; the spray gun cover has an annular cavity area, the front end of the cavity area is inclined toward the axial direction of the spray gun head, at least two side branch pipes are arranged at the front end of the compressed air duct, and the side branch pipes are connected with the cavity area; a gun cover is arranged on the outside of the spray gun cover.

[0009] Furthermore, a workpiece conveyor is provided below the spray box, and a robotic arm is provided above the workpiece conveyor, and the robotic arm is used to clamp the aluminum alloy flat tube.

[0010] Furthermore, the adjusting pulley group includes a first auxiliary pulley, a second auxiliary pulley and a main pulley, a portal frame, and a sub-frame. The first auxiliary pulley and the second auxiliary pulley are respectively arranged at both ends of the sub-frame. Adjustment grooves are respectively arranged at both ends of the portal frame. Fixing screws are arranged in the adjusting grooves to fix the sub-frame. The main pulley is arranged on the portal frame. The middle of the portal frame is convex and connected to the middle of the sub-frame through a bolt adjusting screw and an adjusting nut. The adjusting screw and the adjusting nut cooperate to adjust the displacement.

[0011] Furthermore, an axle pin sensor and a rotation-stopping plate are provided at the rotating shaft end of the main pulley.

[0012] Compared with the prior art, a new device for zinc spraying on the surface of aluminum alloy flat tubes is designed, which includes a zinc wire conveying device, a steering device, an arc wire feeder, a spray box and a dust removal device. An adjusting pulley group is arranged on the zinc wire conveying device to adjust the tightness of the zinc wire. The spray box is designed to be used for spraying on the aluminum alloy flat tubes through a mechanical arm. The overall design is reasonable and the layout is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model.

[0014] Figure 2 This is the contact relationship diagram between the guide cylinder and the zinc wire.

[0015] Figure 3 Schematic diagram of the internal structure of the spray gun head.

[0016] Figure 4 This is a schematic diagram of the structure of the adjusting pulley group.

[0017] Illustration: 1 base, 2 zinc wire conveying device, 3 zinc wire, 4 pulley bracket, 5 first pulley, 51 portal frame, 52 auxiliary frame, 511 first auxiliary pulley, 512 second auxiliary pulley, 513 main pulley, 6 second pulley, 7 guide cylinder, 71 straight pipe, 72 lubricating inner pipe, 8 connecting bracket, 9 arc wire feeder, 10 directional sleeve, 11 spray box, 12 workpiece conveyor, 13 conveying area, 14 arc sprayer, 141 spray gun head, 142 gun holster, 15 robot arm, 16 dust removal device, 17 compressed air duct, 18 hollow conductive rod, 171 intermediate nozzle, 172 side branch pipeline, 19 spray gun cover, 20 air compressor, A aluminum alloy flat tube, 21 adjustment groove, 22 shaft pin sensor, 23 anti-rotation clamping plate, 24 adjustment nut, 25 adjustment screw. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figure 1 As shown, the utility model relates to a zinc spraying device on the surface of an aluminum alloy flat tube, comprising a zinc wire conveying device 2, a steering device, an arc wire feeder 9, a spray box 11 and a dust removal device 16; the zinc wire conveying device is arranged on a base 1 and fixed by bolts; the steering device is arranged adjacent to the zinc wire conveying device, with a spacing of 0.5 to 1 meter, and the zinc wire conveying device is divided into two groups; the steering device comprises an L-shaped pulley bracket 4, two groups of adjusting pulley groups 5 are arranged on the front side of the pulley bracket, and two groups of first pulleys 6 are arranged on the top surface of the pulley bracket; a connecting bracket 8 is arranged on the outer side of the arc wire feeder, and a guide cylinder 7 is arranged on the connecting bracket; the zinc wires 3 in the two groups of the zinc wire conveying devices pass through the first pulley respectively, the adjusting pulley group is turned and is gathered through the guide cylinder 7 to connect with the arc wire feeder 9 and the spray box; the dust removal device 16 is arranged on the spray box.

[0020] like Figure 2 As shown, a technical improvement is made, two straight-through tubes 71 are arranged in the guide cylinder, and lubricating inner tubes 72 are arranged on the inner walls of the straight-through tubes. The edges of the lubricating inner tubes need to be expanded outward and rounded to reduce friction and avoid cutting the zinc wire.

[0021] As a technical improvement, the spray box is also provided with a power supply, a compressed air channel, an air compressor 9 and a control system. The air compressor is connected to the inlet of the compressed air channel through an input air pipe, and the outlet of the compressed air channel is connected to the spray gun head 141 of the arc sprayer through an output air pipe; the arc sprayer is electrically connected through the control system.

[0022] Make a technical improvement, such as Figure 3 As shown, a compressed air duct 17 is arranged at the center of the spray gun head of the spray box, and relatively inclined hollow conductive rods 181 are arranged on both sides of the compressed air duct, forming an intersection position of 25° to 30° (of course, it can also be 30° or 50°) at the front end of the spray gun head, respectively connecting the positive electrode and the negative electrode, and zinc wires 6 are arranged in the compressed air duct, respectively, and the zinc wires are output by the zinc wire conveying device, and a spray gun cover 19 is arranged at the front end of the spray gun head; the spray gun cover has an annular cavity area, and the front end of the cavity area is inclined toward the axial direction of the spray gun head, where a cavity is left with the front end of the compressed air duct to form a nozzle, and at least two side branch pipes 172 are arranged at the front end of the compressed air duct, and the side branch pipes are connected with the cavity area; a gun cover 142 is arranged on the outside of the spray gun cover.

[0023] As a technical improvement, a workpiece conveyor 12 is provided below the spray box for conveying aluminum alloy flat tubes, corresponding inlets and outlets 13 are provided on opposite sides of the spray box, and a mechanical arm 15 is provided above the workpiece conveyor for clamping the aluminum alloy flat tubes.

[0024] like Figure 4 As shown, the adjusting pulley group includes a first auxiliary pulley 511, a second auxiliary pulley 512 and a main pulley 513, a portal frame 51, and a sub-frame 52. The first auxiliary pulley and the second auxiliary pulley are respectively arranged at both ends of the sub-frame, and the adjusting grooves 21 are respectively arranged at both ends of the portal frame. The adjusting grooves are provided with fixing screws 26 to fix to the sub-frame, and the main pulley 513 is arranged on the portal frame. The middle of the portal frame is convex and connected to the middle of the sub-frame through bolt adjustment screws 25 and adjustment nuts 24. The adjustment screws and adjustment nuts cooperate to adjust the displacement. The spacing between the first pulley, the second pulley and the main pulley can be changed by them, so that the tightness of the zinc wire can be adjusted.

[0025] As a technical improvement, an axle pin sensor 22 and a rotation-stopping card plate 23 are provided at the rotating shaft end of the main pulley, and the rotation and stopping of the main pulley can be controlled by the rotation-stopping card plate and the axle pin sensor.

[0026] The zinc wire conveying device on the base cooperates with the adjusting pulley group and the first pulley on the pulley bracket to send the zinc wire into the arc wire feeder through the guide cylinder. The arc wire feeder sends the zinc wire into the spray box, and then the aluminum alloy flat tube is surface sprayed in the spray box. A dust removal device is designed to prevent dust. An intermediate nozzle is designed in the middle of the spray gun head. The air compressor introduces compressed air into the intermediate nozzle through the compressed air duct. At the side branch pipeline position, the air is divided into two paths, one path continues to spray out during the intermediate spraying, and the other path is sprayed out through the spray gun cover. The zinc in the hollow conductive rods on both sides is atomized by two high-pressure air at the nozzle position to achieve arc spraying.

Claims

1. A zinc spraying device for the surface of an aluminum alloy flat tube, characterized in that: It includes a zinc wire conveying device, a steering device, an arc wire feeder, a spray box and a dust removal device; the zinc wire conveying device is arranged on a base; the zinc wire conveying device is in two groups; the steering device includes a pulley bracket, two groups of adjusting pulley groups are arranged on the front side of the pulley bracket, and two groups of first pulleys are arranged on the top surface of the pulley bracket; a connecting bracket is arranged on the outer side of the arc wire feeder, and a guide cylinder is arranged on the connecting bracket; the zinc wires in the two groups of zinc wire conveying devices pass through the first pulley respectively, the second pulley is turned and connected to the arc wire feeder and the spray box through the guide cylinder; the dust removal device is arranged on the spray box.

2. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 1, characterized in that: Two straight-through pipes are arranged in the guide cylinder, and lubricating inner pipes are arranged on the inner walls of the straight-through pipes.

3. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 1, characterized in that: The spray box is also provided with a power supply, a compressed air channel, an air compressor and a control system. The air compressor is connected to the inlet of the compressed air channel through an input air pipe, and the outlet of the compressed air channel is connected to the spray gun head of the arc sprayer through an output air pipe; the arc sprayer is electrically connected through the control system.

4. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 1, characterized in that: A compressed air duct is arranged at the center of the spray gun head of the spray box, relatively inclined hollow conductive rods are arranged on both sides of the compressed air duct, zinc wires are arranged in the compressed air ducts respectively, and a spray gun cover is arranged at the front end of the spray gun head; the spray gun cover has an annular cavity area, the front end of the cavity area is inclined toward the axial direction of the spray gun head, at least two side branch pipes are arranged at the front end of the compressed air duct, and the side branch pipes are connected with the cavity area; a gun cover is arranged on the outside of the spray gun cover.

5. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 1, characterized in that: A workpiece conveyor is arranged below the spray box, and a mechanical arm is arranged above the workpiece conveyor, and the mechanical arm is used for clamping the aluminum alloy flat tube.

6. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 1, characterized in that: The adjusting pulley group includes a first secondary pulley, a second secondary pulley and a main pulley, a portal frame, and a secondary frame. The first secondary pulley and the second secondary pulley are respectively arranged at both ends of the secondary frame. Adjustment grooves are respectively arranged at both ends of the portal frame. Fixing screws are arranged in the adjusting grooves to fix the secondary frame. The main pulley is arranged on the portal frame. The middle of the portal frame is convex and connected to the middle of the secondary frame through bolt adjustment screws and adjustment nuts. The adjustment screws and adjustment nuts cooperate to adjust the displacement.

7. The device for zinc spraying on the surface of an aluminum alloy flat tube according to claim 6, characterized in that: An axle pin sensor and a rotation-stopping clamping plate are arranged at the rotating shaft end of the main pulley.

Images