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CN-121972352-A - Pretreatment of spraying process of high-corrosion-resistance metal piece in body-building equipment

CN121972352ACN 121972352 ACN121972352 ACN 121972352ACN-121972352-A

Abstract

The invention relates to the technical field of metal piece processing, and particularly discloses a spray coating process pretreatment of a high corrosion-resistant metal piece in body-building equipment, which comprises a base, a spray coating box and a spray coating device, wherein one side of the spray coating box is provided with a storage mechanism; the storage mechanism comprises a storage barrel, a driving motor is fixed at the top of the supporting frame, a driving frame is fixed at the output end of the driving motor, a mounting rod is fixed in the supporting frame, a swinging frame is rotatably mounted on the outer wall of the mounting rod, a connecting column is slidably mounted in the swinging frame, a rotating frame is rotatably mounted at the bottom end of the connecting column, and the bottom end of the rotating frame is fixedly connected with the top end of the stirring frame.

Inventors

  • GUO GUOFANG
  • NI YASU
  • WANG SHILEI

Assignees

  • 青岛驰健英赛特健康科技有限公司

Dates

Publication Date
20260505
Application Date
20260304

Claims (10)

  1. 1. The spray coating process pretreatment of the high corrosion-resistant metal piece in the body-building equipment is characterized by comprising a spray coating device, wherein the spray coating device comprises a base (1), a spray coating box (2) is fixed at the top of the base (1), a hollow connecting plate (3) is slidably arranged at the top of the spray coating box (2), a plurality of electrostatic spray guns (4) are fixedly communicated with the bottom of the hollow connecting plate (3), and a storage mechanism and a curing device are arranged at one side of the spray coating box (2); in the process of spraying the paint by using the spraying device, the method comprises the following steps of: s1, placing a metal piece to be sprayed into a spraying box (2), and sequentially performing mechanical sand blasting and nano degreasing treatment to remove a surface oxide layer and oil stains so as to obtain a clean and rough substrate; S2, adding paint for spraying into a storage barrel (5) in the storage mechanism, and starting a driving mechanism of a stirring system to keep the paint in a continuously reciprocating stirring state in the storage process; S3, spraying double-layer antirust primer through an electrostatic spray gun (4) at the bottom of the hollow connecting plate (3), and continuously stirring and feeding by utilizing a storage mechanism to realize uniform paint atomization and consistent attachment; S4, after the primer layer is naturally dried, continuously spraying super-hydrophobic finish paint through an electrostatic spray gun (4), controlling the thickness to be 10-20 mu m, forming a hydrophobic protective layer with a surface contact angle of more than or equal to 150 degrees, and improving the corrosion resistance and the anti-fouling property of the coating; s5, driving the hollow connecting plate (3) to move upwards along the sliding rail to enable the electrostatic spray gun (4) to be far away from the plate body area, and preventing nozzle blockage or residual paint fixation caused by heat influence in the curing stage; S6, starting the curing device, and carrying out hot air and infrared combined curing treatment on the sprayed metal piece to finish the crosslinking and shaping of the paint layer, so as to obtain the compact high-adhesion coating.
  2. 2. The pretreatment of the coating process of a highly corrosion resistant metal part in a fitness equipment according to claim 1, wherein the surface roughness Ra of the surface treatment in S1 is controlled to be 5-15 μm, thereby forming a substrate favorable for adhesion of a coating.
  3. 3. The pretreatment of the spraying process of the high corrosion resistant metal part in the fitness equipment according to claim 1, wherein the electrostatic voltage in the electrostatic spraying process in the step S3 is 50-70 kV, and the thickness of the primer is 15-25 μm.
  4. 4. The pretreatment of the spraying process of the high corrosion resistant metal piece in the fitness equipment according to claim 1, wherein S6 is performed for curing for 8-10 min at 120-140 ℃ in the process of curing the paint layer, so that the adhesive force and the oxidation resistance are improved.
  5. 5. The spray coating process pretreatment of the high corrosion resistant metal piece in the body building equipment according to claim 1, wherein the storage mechanism comprises a storage barrel (5), a cover plate is arranged at the top of the storage barrel (5), a stirring frame (51) is rotatably arranged in the cover plate of the storage barrel (5), a supporting frame (52) is fixed at the top of the storage barrel, a driving motor (53) is fixed at the top of the supporting frame (52), a driving frame (54) is fixed at the output end of the driving motor (53), a mounting rod (55) is fixed in the supporting frame (52), a swinging frame (56) is rotatably arranged on the outer wall of the mounting rod (55), a connecting column (57) is slidably arranged in the swinging frame (56), a rotating frame (58) is rotatably arranged at the bottom end of the connecting column (57), and the bottom end of the rotating frame (58) is fixedly connected with the top end of the stirring frame (51).
  6. 6. The pretreatment of the spraying process of the high corrosion resistant metal piece in the body building equipment according to claim 1, wherein a bidirectional screw rod (6) is rotatably installed in the spraying box (2), two movable frames (61) are connected to the outer wall of the bidirectional screw rod (6) through threads, a baffle plate (62) is fixed on one side of each movable frame (61), a first conical gear (63) is fixed on the top end of each bidirectional screw rod (6), a unidirectional screw rod (64) is rotatably installed in the spraying box (2), a second conical gear (65) is fixed on one end of each unidirectional screw rod (64), an adjusting motor (66) is fixed on one side of the spraying box (2), a third conical gear (67) is fixed on the output end of each adjusting motor (66), a sliding frame (68) is connected to the outer wall of each unidirectional screw rod through threads, and a protection plate (69) is fixed on one side of each sliding frame (68).
  7. 7. The pretreatment of the spraying process of the high corrosion resistant metal piece in the body building equipment according to claim 1, wherein a fixing plate (7) is fixed at the top of the spraying box (2), an electric push rod (8) is fixed at one side of the fixing plate (7), and the telescopic end of the electric push rod (8) is fixedly connected with the top of the hollow connecting plate (3).
  8. 8. The pretreatment of the spraying process of the high corrosion resistant metal piece in the body building equipment according to claim 1, wherein the solidifying device comprises a mounting box (9) fixedly connected to one side of the spraying box (2), an electric heating fan (10) is fixedly arranged in the mounting box (9), and the storage barrel (5) is fixedly arranged at the top of the mounting box (9).
  9. 9. The pretreatment of the spraying process of the high corrosion resistant metal piece in the body building equipment according to claim 1, wherein two fixing frames (11) are fixed on one side of the inner wall of the spraying box (2), a turnover frame (12) is rotatably installed in the fixing frames (11), a servo motor (13) is fixed on one side of the fixing frames (11), and an infrared irradiation lamp (14) is fixed in the turnover frame (12).
  10. 10. The pretreatment of the spraying process of the high corrosion resistant metal parts in the fitness equipment according to claim 1, wherein the collecting box (15) is slidingly installed inside the base (1).

Description

Pretreatment of spraying process of high-corrosion-resistance metal piece in body-building equipment Technical Field The invention belongs to the technical field of metal piece processing, and particularly relates to a spray coating process pretreatment of a high corrosion-resistant metal piece in body-building equipment. Background The exercise equipment is used for assisting exercise of people with exercise demands, has different effects, is mainly placed in gymnasiums, and is made of metal, and various metal parts can be installed and used only through a plurality of processing procedures, so that the metal parts are sprayed by paint and coating liquid, and the exercise equipment is an indispensable process. In the current spraying operation process, three steps of mechanical sand blasting, nano degreasing, double-layer primer rust-proof coating and super-hydrophobic finish paint are generally adopted. When in spraying, the adhesive force and the oxidation resistance are improved by adopting the integrated operation of electrostatic spraying and infrared heating and curing. However, in the electrostatic spraying process conventionally used at present, the paint is usually sprayed onto the metal piece of the exercise machine through the electrostatic spray gun, but in this process, as the electrostatic spray gun needs to draw the paint from the storage barrel through the hose, then as the spraying operation is performed, the paint in the storage barrel may be precipitated, and further, the atomization of the electrostatic spray gun may be uneven, and the nozzle may be blocked, so that the subsequent spraying effect and efficiency may be reduced. Disclosure of Invention The invention aims to provide a spray coating process pretreatment of a high corrosion-resistant metal piece in body-building equipment so as to solve the problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: The spray coating process pretreatment of the high corrosion resistant metal piece in the body-building equipment comprises adopting a spray coating device, wherein the spray coating device comprises a base, a spray coating box is fixed at the top of the base, a hollow connecting plate is slidably arranged at the top of the spray coating box, a plurality of electrostatic spray guns are fixedly communicated with the bottom of the hollow connecting plate, and a storage mechanism and a curing device are arranged at one side of the spray coating box; in the process of spraying the paint by using the spraying device, the method comprises the following steps of: S1, placing a metal piece to be sprayed in a spraying box, and sequentially carrying out mechanical sand blasting and nano degreasing treatment to remove an oxide layer and greasy dirt on the surface to obtain a clean and rough substrate; S2, adding paint for spraying into a storage barrel in the storage mechanism, and starting a driving mechanism of a stirring system to keep the paint in a continuously reciprocating stirring state in the storage process; s3, spraying double-layer antirust primer through an electrostatic spray gun at the bottom of the hollow connecting plate, and continuously stirring and feeding by utilizing a storage mechanism to realize uniform paint atomization and consistent adhesion; S4, after the primer layer is naturally dried, continuously spraying super-hydrophobic finish paint through an electrostatic spray gun, controlling the thickness to be 10-20 mu m, forming a hydrophobic protective layer with a surface contact angle of more than or equal to 150 degrees, and improving the corrosion resistance and the anti-fouling property of the coating; S5, driving the hollow connecting plate to move upwards along the sliding rail to enable the electrostatic spray gun to be far away from the plate body area, and preventing nozzle blockage or residual paint fixation caused by heat influence in the curing stage; S6, starting the curing device, and carrying out hot air and infrared combined curing treatment on the sprayed metal piece to finish the crosslinking and shaping of the paint layer, so as to obtain the compact high-adhesion coating. Optionally, the surface roughness Ra in the surface treatment in S1 is controlled to be 5-15 mu m, so that a substrate which is favorable for coating adhesion is formed. Optionally, in the electrostatic spraying process in the step S3, the electrostatic voltage is 50-70 kV, and the thickness of the primer is 15-25 mu m. Optionally, S6 is cured for 8-10 min at 120-140 ℃ in the process of curing the paint layer, so that the adhesive force and the oxidation resistance are improved. Optionally, storage mechanism includes the storage vat, the apron has been placed at the top of storage vat, the apron internally mounted of rotation of storage vat has the carriage, and the top is fixed with the support frame, the top of support frame is fixed with driving motor,