Electrostatic paint spraying structure and protection device thereof

Abstract

The utility model provides an electrostatic paint spraying protection device, which belongs to the technical field of electrostatic paint spraying and comprises a coating support and a plastic sleeve wrapping the periphery of the top end of the coating support, an annular groove is arranged in the plastic sleeve, a sealing ring is clamped in the annular groove, and a piston rod of an air spring is inserted into the plastic sleeve. A gap is formed between the piston rod and the plastic sleeve and is sealed through a sealing ring. An electrostatic painting structure comprises a primer layer coated on the outer surface of a gas spring cylinder barrel and a finish paint layer coated on the surface of the primer layer. The gap is formed so that the piston rod can be conveniently inserted into the plastic sleeve, and pretreatment liquid is prevented from polluting the periphery of the piston rod through the arrangement of the sealing ring; the primer layer is arranged between the finishing coat layer and the surface of the cylinder barrel, so that the adhesive force of the coating surface before the finishing coat layer is coated is improved, and the corrosion resistance of the product, namely the gas spring, is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrostatic paint spraying technical field especially relates to a kind of electrostatic paint spraying structure and its protection device. BACKGROUND

[0002] Atomized paint particles are negatively charged in the direct current high voltage (80-90kV) electric field, under the electric field force, paint particles fly to the surface of the workpiece with positive charge and are adsorbed by the workpiece, forming a paint film, this process is called electrostatic paint spraying.

[0003] In the prior art, electrostatic paint spraying has the following two problems:

[0004] 1. The pretreatment procedure is not done well, resulting in insufficient adhesion of the surface to be coated, and the corrosion resistance of the final product is poor.

[0005] 2. The performance of the pretreatment agent is too strong, and the existing technology is prone to pollute the surface of the product that does not need to be coated.

[0006] Therefore, a coating structure with sufficient adhesion of the coating surface is needed, and a device is needed to avoid pollution of the pretreatment agent to the surface that does not need to be coated. INVENTION CONTENTS

[0007] The utility model discloses a kind of electrostatic paint spraying protection devices, including coating support and sleeve, sleeve one end is wrapped in the top outer periphery of coating support, the piston rod one end of gas spring is inserted from the other end of sleeve, and the end of sleeve and the end of gas spring cylinder abut;

[0008] Gap is formed between the outer periphery of gas spring piston rod and the inner periphery of sleeve, and the inner periphery of sleeve is provided with a sealing element for sealing.

[0009] Further, the inner periphery of the sleeve is provided with an inner concave annular groove, and the sealing element is clamped on the annular groove.

[0010] Further, the sleeve is a plastic sleeve.

[0011] Further, the sealing element is a sealing ring.

[0012] A kind of electrostatic paint spraying structure, using electrostatic paint spraying protection device to spray, including coating in cylinder outer surface, for lifting product adhesion primer layer, coating in the outer surface of primer layer finish layer.

[0013] Further, the primer layer is an epoxy primer layer.

[0014] Compared with the prior art, the utility model has the beneficial effects mainly reflected in:

[0015] 1、Through the setting of the gap inside the sleeve, the gas spring piston rod can be easily inserted into the inside of the sleeve, and through the setting of the gas spring internal sealing element, the pretreatment liquid can only enter the sealing ring, and cannot continue to flow downward, and the insertion and removal of the gas spring is not affected.

[0016] 2、By coating a primer layer between the topcoat layer and the gas spring cylinder, the adhesion of the surface is improved, and the corrosion resistance of the product surface is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the electrostatic paint spraying protection device.

[0018] Figure 2 It is a structure schematic view of the electrostatic paint spraying protection device.

[0019] Among them, 1, cylinder; 2, piston rod; 3, plastic sleeve; 4, coating support; 5, sealing ring; 6, primer layer; 7, topcoat layer. DETAILED DESCRIPTION

[0020] The electrostatic paint spraying structure and the protection device thereof will be described in more detail below with reference to the schematic view, wherein the preferred embodiment of the present utility model is represented, and it should be understood that the present utility model described herein can be modified by those skilled in the art, and the advantageous effects of the present utility model can still be achieved, therefore, the following description should be understood as extensive knowledge for those skilled in the art, and not as a limitation of the present utility model.

[0021] As Figure 1 shown, an electrostatic paint spraying protection device, comprising a coating support 4 and a sleeve, the sleeve is a plastic sleeve 3, the bottom end of the plastic sleeve 3 is wrapped around the outer periphery of the top end of the coating support 4, the inner periphery is concave with a ring groove, the sealing element is arranged in the ring groove, the sealing element is a sealing ring 5, the inner diameter of the plastic sleeve 3 is greater than the outer diameter of the piston rod 2 of the spring, and there is a gap between the two. The utility model realizes the mutual connection by extending the piston rod 2 of the gas spring into the plastic sleeve 3, and passing through the sealing ring 5, and abutting the end of the cylinder 1 of the gas spring with the top end of the plastic sleeve 3.

[0022] Referring Figure 2 to the electrostatic paint spraying structure, the electrostatic paint spraying protection device is used for spraying, which comprises a primer layer 6 and a topcoat layer 7 coated on the outer periphery of the cylinder 1 of the gas spring in sequence. The primer layer 6 is a primer layer 6 sprayed by using epoxy resin type paint, which is used for improving the adhesion and ensuring the corrosion resistance of the topcoat layer 7.

[0023] The process of spraying paint by using the above-mentioned electrostatic sprayer structure is specifically as follows:

[0024] Loading, pre-debinding, main debinding, first water washing, second water washing, silane formation, third water washing, fourth water washing, pure water direct spraying, dehydration drying, primer layer 6 coating, ST, curing, dehydration drying, topcoat layer 7 coating, curing, unloading to complete painting.

[0025] The above are only preferred embodiments of the present application, and do not have any limiting effect on the present application. Any person skilled in the art, without departing from the technical solution of the present application, can make any form of equivalent replacement or modification of the technical solution and technical content disclosed in the present application, and still belong to the protection scope of the present application.

Claims

1. An electrostatic paint protection device for the electrostatic painting of the outer surface of a gas spring cylinder, characterized in that The gas spring is arranged in the coating support, and the piston rod of the gas spring is inserted into the other end of the sleeve. A gap is formed between the outer periphery of the piston rod of the gas spring and the inner periphery of the sleeve, and the inner periphery of the sleeve is provided with a sealing element for sealing.

2. The electrostatic paint spraying protection device of claim 1, wherein, The inner periphery of the sleeve is provided with a concave annular groove, and the sealing element is clamped on the annular groove.

3. The electrostatic paint spraying protection device of claim 1, wherein, The sleeve is a plastic sleeve.

4. The electrostatic paint spraying protection device of claim 1, wherein, The sealing element is a sealing ring.

5. An electrostatic painting structure using the electrostatic painting protection device according to any one of claims 1 to 4, characterized in that, A primer layer is coated on the outer surface of the cylinder barrel to improve the adhesion of the product, and a topcoat layer is coated on the outer surface of the primer layer.

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