CN2179208Y

CN2179208Y - Welding compound spraying coater for automatic soldering tin machine

Info

Publication number: CN2179208Y
Application number: CN 93224930
Authority: CN
Inventors: 张攻
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-23
Filing date: 1993-09-23
Publication date: 1994-10-12
Anticipated expiration: 2003-09-23

Abstract

The utility model relates to a flux spraying device for an automatic soldering tin machine. The upper part of a groove body which holds the flux is provided with an impregnating groove, and the inside of the impregnating groove is movably provided with a brush roll which is driven to rotate by a motor; the front lower part of the circumference of the brush roll is provided with a rotating roller which is immersed in the flux, and a scraper is sheathed with a shaft lever of another circumference of the brush roll. The front part of the scraper presses the brush roll, and a buckle closure of which the middle part is provided with a crack groove is buckled on the open position of the impregnating groove; a main body on the lower part of the crack groove of the buckle closure is provided with a refluxing crack groove hole. When a PC plate on a conveyor belt 6 passes the upper part of the crack groove of the buckle closure, the rotating brush roll which is stained with flux produces fog under the pressure of the scraper, and the fog is evenly sprayed from the crack groove to the PC plate for later soldering.

Description

Welding compound spraying coater for automatic soldering tin machine

The utility model relates to the scaling powder spraying device of a kind of spray equipment, particularly a kind of automatic tin welding machine.

Fluorochloride is the cleaning agent of indispensable scaling powder in most of PC plate electronic assemblies industry, but, this cleaning agent destroys the atmospheric ozone layer harmful substance because belonging to, now determined to ban use of in a short time, because banning use of of this cleaning agent will be brought very big difficulty to the cleaning of scaling powder, therefore, the formed sprayed coating effect of existing general scaling powder spraying device is relatively poor, and is difficult to clean with other cleaning agent.

In addition, existing spraying equipment generally adopts the jet printing type structure, promptly is pumped in the shower nozzle by the analog of pump with adhesive or scaling powder, is sprayed onto on binding surface or the PC plate by the spray orifice of offering on the shower nozzle, for follow-up bonding or soldering work.The shortcoming of this device is: spray orifice very easily stops up and influences the effect of spraying, in addition, owing to work having under the pressure state.Therefore, spray time, quantity for spray and coating thickness all are difficult for grasping the very difficult solution of control, the especially problem of splashing of spray coating liquor.

Another kind of spray equipment is to smear class, promptly brushes on object plane by the brush body that is stained with the liquid slurry that rotates or move, and its shortcoming is that to be coated with brushing effects inhomogeneous and coarse, influence the weldbonding effect at last, and some object plane does not allow to contact with other object.

The purpose of this utility model just is to overcome above-mentioned shortcoming of existing in prior technology or deficiency, and provides a kind of spraying effect good, the scaling powder spraying device of the automatic tin welding machine that avoids cleaning that spray-up is equal and thin.

The purpose of this utility model is to realize by following technical scheme: on the cell body top of putting scaling powder one dipping tank is arranged, a brush roll that is turned by motor is equipped with in activity in the dipping tank, in all sides of brush roll front lower place one transfer roller that soaks in scaling powder is arranged, shaft rod upper sleeve in another all side of brush roll is equipped with scraper, scraper is anterior to be pressed mutually with brush roll, the open-mouth button is placed with the buckle closure that a middle part has slot on the dipping tank, offer backflow slot hole on the slot below body of buckle closure, when the PC plate on the conveyer belt 6 passes through the slot top of buckle closure, the rotation brush roll that speckles with solder flux is pressed to touch down at scraper and is produced fog-like body and spray to from slot equably on the PC plate, for follow-up soldering.

Therefore remarkable result of the present utility model is:

1. solder flux touches down in the pressure of brush roll self rotation and Later Zhou Dynasty, one of the Five Dynasties's side scraper, the solder flux that adheres on the brush bundle produces the very thin vaporific particle bullet face that stretches tight because of the bullet effect of stretching tight of brush bundle, this bullet face that stretches tight continuously evenly launch the motion conveyer belt on the PC plate on, thereby form the very thin welding flux layer of one deck, solve existing spray equipment spray and smeared uneven problem, simultaneously, because it is coated with spray-up as thin as a wafer, clean problem so saved follow-up solder flux.Avoided problem of environmental pollution because of adopting the oxyfluoride cleaning agent to cause.

2. owing to the spraying homogeneous approaches,, help the raising of welding quality so can save the quality that sprays that solder flux also can improve solder flux.

3. neither can produce the solder flux blockage problem, also can not produce a large amount of solder flux problem that flashes, and, spatter solder flux and can reclaim outward on a small quantity from return port.

4. can press width with scraper and brush bundle and change the needs that adapt to spraying different in width welding flux layer.

Concrete structure of the present utility model is realized by the following examples and accompanying drawing thereof:

Fig. 1 is a structural perspective of the present utility model.

Fig. 2 is that the A of Fig. 1 is to the part sectional side view.

Fig. 3 is that the A of Fig. 1 is to view.

Fig. 4 is a scraper distribution schematic diagram shown in Figure 1.

Fig. 5 is the structural perspective of another embodiment of the present utility model.

Be described in detail below in conjunction with 1～5 pair of concrete structure of the present utility model of accompanying drawing.

Be placed with a dipping tank 12 at the interior top seat that the cell body 1 of scaling powder is housed, a brush roll 2 that is turned by motor 21 is put in activities in the dipping tank 12, in all side dipping tanks 12 of brush roll 2, be equipped with and brush roll 2 contacted transfer rollers 3, in the dipping tank 12 of the opposite side of transfer roller 3, an axostylus axostyle 42 is housed, be set with the scraper 4 that presses mutually with brush roll 2 on the axostylus axostyle 42, the open-mouth button is placed with buckle closure 5 on dipping tank 12, buckle closure 5 tops offer an open-minded hole 51, axostylus axostyle 42 is turned by cylinder 43, is provided with scaling powder delivery pump 113 and return duct 121 between dipping tank 12 and cell body 1.Referring to Fig. 1 to Fig. 3

Architectural feature of the present utility model also is:

The housing 11 of cell body 1 is rectangular, uncovered dipping tank 12 on the rectangle that is placed with an indent is sat on top at cell body 1, be equiped with a brush roll 2 of planting hairbrush bundle 201 in the horizontal activity in dipping tank 12 middle parts, brush roll 2 is turned by the motor 21 that is fixed on housing 11 tops outside the dipping tank 12, fastened plural number scraper 4 by screw 41 on the axostylus axostyle 42, the top, all rear flank of touching and being positioned at brush roll 2 is pressed mutually with the hairbrush bundle 201 on the brush roll 2 in scraper 4 preceding bottoms, axostylus axostyle 42 is connected with chuck 421, chuck 421 bottoms and cylinder 43 are hinged, return duct 121 is arranged between the scaling powder liquid level upper limit position and rectangular case 11 inner chambers in the dipping tank 12, the open-mouth button is placed with the buckle closure 5 that is fovea superior button box shape on dipping tank 12, two symmetrical sides laterally offer two return ports 52 at buckle closure 5 middle parts, are equiped with ascending pipe 111 and the densimeter 112 that communicates with scaling powder in cell body 1 inner chamber in rectangular case 11 1 sides.Referring to Fig. 1 to Fig. 3

On the conveying mechanism 6 above the buckle closure 5 of buckle closure on the dipping tank 12, be fixed with sensing element 61, be connected with lead between sensing element 61 and the motor 21.Referring to Fig. 2 and Fig. 3

Passive transfer roller 3 is positioned at the horizontal front lower place of brush roll 2 all sides and contacts with hairbrush bundle 201 on the brush roll 2, and the Lower Half of passive transfer roller 3 is immersed in the scaling powder in the dipping tank 12.Referring to Fig. 1 and Fig. 2

Brush roll 2 activities of uniform hairbrush bundle 201 of planting are suspended at the scaling powder liquid level top in the dipping tank 12.Referring to Fig. 2

The width of the spray area of the PC plate that quantity and spraying are set of the scraper 4 on the axostylus axostyle 42 adapts and increase and decrease as required.Referring to Fig. 1 and Fig. 4

The cross section of the buckle closure 5 of fovea superior is the pot cover shape, in the central epirelief of the length direction of buckle closure 5 rectangle hole 51 of slitting is arranged, brush roll 2 is positioned at the slit below in hole 51 of rectangle, respectively offers a bar shaped return port 52 at the slit length direction of 51 bottoms, hole, two respective side bodies of the rectangle of buckle closure 5.Referring to Fig. 1 to Fig. 3

In dipping tank 12, be provided with the sensor 112 of surveying the scaling powder liquid level, be connected with the signal delivery guidewire between sensor 112 and the delivery pump 113.Referring to Fig. 5

Housing 11 bottoms at rectangle are provided with adjustable type supporting leg 13.Referring to Fig. 2

The course of work of the present utility model is as follows:

Press the area of PC plate 7 and go up definite spray area greatly, and spray area is determined by the scraper quantity with brush roll 2 presses mutually fixing on the axostylus axostyle 42, be that spray area is when big, the quantity of then scraper 4 being pressed to brush roll increases, its splicing width that presses brush bundle 201 is strengthened,, then unscrew screw 41 if reduce spray area, scraper 4 rotated backward and take to be put on dipping tank 12 inwalls, and 4 remaining of scrapers are spliced into narrower pressure and touch face.Referring to Fig. 1 and Fig. 4

For scaling powder can be sprayed on the PC plate 7 equably, adopted and temporarily transferred the structure that whole supporting leg 13 decides the distance between open-minded hole 51 of spraying and PC plate.As shown in Figure 3.

With the suitably pressured pressure that increase brush bundle 201 on brush roll 2 of scraper 4, when brush roll changeed, the brush bundle of being pressed was upspring suddenly and the scaling powder of adhesion on it bullet that spouts is nebulized and evenly launches on the PC plate 7, referring to Fig. 1 and Fig. 2

Motor 21 drives brush roll 2 and rotates, and brush roll 2 frictionally traction transfer rollers 3 rotate, because the lower part of transfer roller 3 is immersed in the scaling powder, therefore, in its rotation process scaling powder is attached on the brush roll 2 that transfer roller 3 reaches with transfer roller 3 contacts.When a small amount of scaling powder splashes to buckle closure 5 outsides, then flow in the bar shaped return ports 52 along buckle closure 5.Referring to Fig. 1 and Fig. 2

When the scaling powder liquid level is crossed when low, then predict by sensor 112, transfer out enabling signal by pilot then and start delivery pump 113,113 of delivery pumps with scaling powder by being pumped in the housing 11 in the dipping tank 12, when too high, unnecessary scaling powder then is back in the housing inner chamber by return duct 121 as stream interface.Referring to Fig. 1

Scaling powder liquid level in housing 11 inner chambers can be recorded by densimeter 112, can replenish by ascending pipe 111 when it adds when annotating.Referring to Fig. 1

The startup of motor 21 is by fixing sensing element 61 controls in conveying mechanism 6 belows, be that sensing element touches or produce when blocking with carrying the PC plate 7 of coming, sensing element 61 sends signal and starter motor rotates, spraying operation then begins, otherwise, then stop, carrying out synchronously with the conveying and the spraying that reach PC plate 7.After spraying finishes, then weld by rear portion Soldering machine 8.

Claims

1, the scaling powder spraying device of automatic tin welding machine, it is characterized in that: sit on the interior top that the cell body (1) of scaling powder is housed and be placed with a dipping tank (12), a brush roll (2) that is turned by motor (21) is put in the interior activity of dipping tank (12), in all side dipping tanks (12) of brush roll (2), be equipped with and the contacted transfer roller of brush roll (2) (3), in the dipping tank (12) of the opposite side of transfer roller (3), an axostylus axostyle (42) is housed, be set with the scraper (4) that presses mutually with brush roll (2) on the axostylus axostyle (42), go up the open-mouth button at dipping tank (12) and be placed with buckle closure (5), buckle closure (5) top offers an open-minded hole (51), axostylus axostyle (42) is turned by cylinder (43), is provided with scaling powder delivery pump (113) and return duct (121) between dipping tank (12) and cell body (1).

2, scaling powder spraying device according to the described automatic tin welding machine of claim 1, it is characterized in that: the housing (11) of cell body (1) is rectangular, uncovered dipping tank (12) on the rectangle that is placed with an indent is sat on top at cell body (1), laterally activity is equiped with a brush roll (2) of planting hairbrush bundle (201) at dipping tank (12) middle part, brush roll (2) is turned by the motor (21) that is fixed on outer housing (11) top of dipping tank (12), axostylus axostyle (42) is gone up by screw (41) and has been fastened plural number scraper (4), the top, all rear flank of touching and being positioned at brush roll (2) is pressed mutually with the hairbrush bundle (201) on the brush roll (2) in the preceding bottom of scraper (4), axostylus axostyle (42) is connected with chuck (421), chuck (421) bottom and cylinder (43) are hinged, return duct (121) is arranged between dipping tank (12) interior the scaling powder liquid level upper limit position and rectangular case (11) inner chamber, last open-mouth button at dipping tank (12) is placed with the buckle closure (5) that is fovea superior button box shape, two symmetrical sides laterally offer two return ports (52) at buckle closure (5) middle part, are equiped with ascending pipe (111) and the densimeter (112) that communicates with scaling powder in cell body (1) inner chamber in rectangular case 11 1 sides.

3, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: on dipping tank (12), be fixed with sensing element (61) on the conveying mechanism (6) of the top of the buckle closure (5) of buckle closure, be connected with lead between sensing element (61) and the motor (21).

4, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: passive transfer roller (3) is positioned at the horizontal front lower place of all sides of brush roll (2) and contacts with hairbrush bundle (201) on the brush roll (2), and the Lower Half of passive transfer roller (3) is immersed in the scaling powder in the dipping tank (12).

5, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: brush roll (2) activity of the uniform hairbrush bundle (201) of planting is suspended at the scaling powder liquid level top in the dipping tank (12).

6, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: the width of the spray area of the PC plate that quantity and spraying are set of the scraper (4) on the axostylus axostyle (42) adapts and increase and decrease as required.

7, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: the cross section of the buckle closure of fovea superior (5) is the pot cover shape, in the central epirelief of the length direction of buckle closure (5) rectangle hole (51) of slitting is arranged, brush roll (2) is positioned at the slit below in hole (51) of rectangle, respectively offers a bar shaped return port (52) at the slit length direction of bottom, hole (51) two respective side bodies of the rectangle of buckle closure (5).

8, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: in dipping tank (12), be provided with the sensor (112) of surveying the scaling powder liquid level, be connected with the signal delivery guidewire between sensor (112) and the delivery pump (113).

9, according to the scaling powder spraying device of claim 1 or 2 described automatic tin welding machines, it is characterized in that: housing (11) bottom at rectangle is provided with adjustable type supporting leg (13).