CN1081629A - Paint-sprinkling and drying method for renewing old bicycle - Google Patents

Abstract

A kind of old bike renovation is watered and is drenched dry method of lacquering, it is characterized in that, it is not power with compressed air, directly water pouring on the bicycle workpiece will painting under the condition that does not form spray film, the simple and easy furnace drying method that adopts electric heating to combine with infrared radiation, lacquer painting is even, bright and clean, there is not waste, pollution-free, also applicable to the reconditioning technology of workpiece such as used motorcycle, old steel furniture.

Description

Paint-sprinkling and drying method for renewing old bicycle

The present invention relates to a kind of method of lacquering of old bike renovation.

Japanning is one of master operation of old bike renovation, and it is divided into paint, japanning, dry three goes on foot and carries out.

Mostly the method for lacquering of using is to adopt aerial spraying at present, and it is to utilize spray gun to make instrument, is power with compressed air, will paint to form vaporific liquid in spray gun is chewed, and is injected on the surface of workpiece.Adopt this method for paint spraying can obtain even and bright and clean paint film, especially be fit to large-area spraying.But it is weak point also, the one, and the paint utilization rate is low, and the vaporific liquid of quite a few is sent forth in air and has been run away, and has caused air pollution, has brought certain harm to human body; The 2nd, under the condition of improper ventilation, when the vaporific liquid of airborne paint has reached finite concentration, fire hazardous.Because mostly bicycle itself is tiny tubular workpieces, adopt aerial spraying more improper, its paint utilization rate only can reach 40%.

Traditional drying plant is by following several: convection type hot-air drying equipment, and electrical drying equipment, infrared radiation drying equipment etc., these equipment performances are good, and drying effect is good, is particularly useful for the baking of large quantities of workpiece.But these equipment manufacturing cost are higher, and operation easier is big, are used for the smallclothes baking of bicycle japanning, and it is very improper to equal low load with strong power.

In view of the foregoing, the objective of the invention is characteristics, a kind of economical and practical japanning and furnace drying method are provided at the bicycle reconditioning technology.

The object of the present invention is achieved like this: the one, changed the basic principle of aerial spraying, and there not being compressed air to can not form under the condition of vaporific liquid, will paint and directly water pouring on the bicycle workpiece; The 2nd, the drying equipment that has adopted electric heating to combine with infrared radiation has been finished the roasting procedure of bicycle workpiece.

Realize that said method can obtain equally that book is thick evenly, the paint film of bright and clean, do not have waste, pollution-free, its paint utilization rate can reach more than 95%, and has saved high-pressure spray gun and air compressor, has simplified drying plant, reduce investment, reduced cost, improved operating efficiency.

Below in conjunction with conforming to figure example of the present invention is described:

Fig. 1 be viscosimeter (plastics or iron) it by handle (1), graduated cylinder (2) (volume 118m ³), outlet (3) (φ 4mm) form.

The definition of its viscosity is: a certain amount of sample at a certain temperature, the time of from the hole of certain diameter, being flowed out (to calculate second).

Embodiment 1: the viscosity test method:

With viscosimeter outlet (3) vertically downward, block outlet, will paint sample then and add graduated cylinder (2), decontrol outlet (3) again after filling it up with sample, make sample dirty naturally, till having flowed, the time that its sample flows out promptly is the viscosity number (to calculate second) of this sample.

The viscosity number of its priming paint finish paint and finishing varnish has nothing in common with each other, and should adopt a certain amount of diluent (gasoline or oil of bananas) to allocate meticulously and measure before the japanning, and its normal viscosity number is:

A, priming paint: be 26-30 second;

B, finish paint: 22-24 second;

C, finishing varnish: 17-20 second.

Fig. 2-the 1st waters and drenches basin (profile), and it adopts 0.5～1mm galvanized iron sheet to make its floor space: 40 * 100=4000cm ², open area: 50 * 120=6000Cm ²Vertical height 30Cm, volume: 150000Cm ³Have at an end of basin degree that the row of 2Cm coats with lacquer hole (1) in one.

Fig. 2-the 2nd waters and drenches kettle (secondary face figure) plastic products, and its (1) is handle, and (2) are Qi Kou into, (3), be lacquer export, volume 4578Cm ³

Embodiment 2, water showering lacquer method:

To water the pouring basin and be put in ground, and an end bed hedgehopping 5Cm in row lacquer hole (1), make it Xiang Yiduan, the bicycle workpiece of handling well is hung (or portable) among the basin mouth, the paint that will mix up is again put into to water and is drenched in the kettle (should not fill), hand-held watering drenched kettle and will paint and slowly water on the top of workpiece time, should slowly shift to the other end from an end of workpiece, watering pouring is should be suitable according to workpiece size grasp speed, try hard to evenly, water paint after drenching and flows into naturally to water and drench in the basin, and then pour into through the outage of an end at the bottom of the basin and to water in the pouring kettle, recycle.The pouring method of watering of its priming paint, finish paint, finishing varnish is identical.

Fig. 3 is the simple and easy baking box of electric heating infrared ray.(cross sectional side view, size are as shown).

Its (1) is electric furnace, power 1000W, and it is positioned at baking box bottom, 4 even branches; Its (2) are that baking box is sealed up a door, and its one side is connected with the baking box body, adopt 3～5mm steel plate to make, and on the top of seal up a door (2) two φ 20mm peepholes (not drawing among the figure) are arranged; Its (3) are iron pegs, and it adopts φ 18mm round steel making (length 650mm) to be positioned at baking box inside, divide two rows (4 of every rows) to be welded on the steel plate at baking box rear portion, are used to hang the bicycle workpiece; Its (4) are the infrared ray bulbs, and it is positioned at the top of baking box power 250W, and totally 4, its (5) are interior oven walls, and it adopts 3-5mm steel plate welding one; Its (6) are the adobe heat-insulation layers, average thickness 100mm.

Embodiment 3, baking method:

Open seal up a door (2), the bicycle workpiece that has been coated with lacquer is suspended on the peg (3), close seal door above (2), connect 2 electric furnace pre-heating temperature elevations earlier, (70～80 ℃ of temperature) connects whole electric furnaces again after the preheating 5 minutes, and opens 4 infrared lamps, makes temperature continue to raise, keep 120 ℃ of constant temperature again, general stoving time 80～100 minutes.

Method provided by the invention is also applicable to used motorcycle, the renovation of workpiece such as old steel furniture.

Claims (3)

1, a kind of paint-sprinkling and drying method for renewing old bicycle, it comprises paint japanning and dry three steps, it is characterized in that:

A, it is not power with compressed air, directly waters pouring on the bicycle workpiece at following paint of the condition that does not form spray film;

B, its simple and easy drying means of having adopted electric heating to combine with infrared radiation.

2, the method that provides according to claim 1 is characterized in that: the viscosity criterion of used paint vehicle is:

Priming paint: 26-30 second;

Finish paint: 22-24 second;

Finishing varnish: 17-20 second

3, according to the described way of claim 1, it is characterized in that: 120 ℃ of the constant temperature indexs of electric heating and the simple and easy baking box of infrared radiation, 80～120 fens kinds of constant temperature time.

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