SU963749A1 - Apparatus for applying soldering liquid or other fluid substance on parts - Google Patents

Description

(54) DEVICE FOR APPLICATION OF DRUM OR OTHER FLUID SUBSTANCES ON A DETAIL

The invention relates to devices for applying liquid to the surface of products by contacting a wet tool-wetted tool with the product and can be used to apply liquid fluxes, paste pastes, as well as protective and other coatings on the surfaces of electronic, engineering, instrument-making, electrical and engineering industries. and, in particular, in electronic peroxidation, for applying a protective coating, for example a compound, on figured surfaces of semiconductor crystals instruments.

A device for applying paste paste to soldering points in parts of electrical communication equipment, in particular printed circuit boards, contains a container with paste, moved up and down by a moving mechanism, a holder with rigidly mounted in it parallel to the direction of movement of rods immersed in the paste. at a set depth, followed by raising and lowering to apply a taken dose to the soldered points of the board soldered tightly in one plane, substituted in the fixed fixing slot under the rods tl.

It is also known a device for applying a vapor liquid to parts, containing a container with liquid, a seat for placing the part with a mechanism for moving it, a spring-loaded dispenser with a mechanism for moving it 2.

ten

The known devices do not provide a clear adherence to the shape of the liquid application contour over a certain continuous area, a much larger area of the metering section.

15 rods.

The aim of the invention is to increase the productivity of the process and the quality of the application of liquid to the surfaces of the products.

20

This goal is achieved by the fact that in a device containing a container with a liquid, a nest for placing a product with a mechanism for its movement, a mechanism of re-typing, the dispenser is made in the form of a head with rods installed with the possibility of mutual movement along its axis. The rods can be placed in increments that retain liquid-;

Claims (2)

30 between the rods with the formation of a contour similar to the contour applied. FIG. Figure 1 shows a scan of the device shown schematically without driving the rotor (the arrows show the direction of rotation of the latter); in fig. 2 - sectional dispenser; in fig. 3 is a view along arrow A in FIG. 2. The device contains a two-story rotor, on the lower floor 1 of which, in the support for rotation 2, jacks 3 are mounted for fixing articles 4. Each jack 3 is equipped with a lever 5 rigidly connected with it, kinematically closing, for example, with a geometric method, with a fixed profile but a fixed copying ruler 6 (the closure can be carried out and the power method, ie, using a spring). On a copier ruler b, at least one section 7 is made for stepped rotation of slot 3 with a certain pitch and section 8 for resetting the slot to its original position. In a limited sector of the space between the rotor floors, over the slots there is a fixed bath 9 for liquid 10 to be applied from the surface of product 4. The level 11 is maintained by a constant excess fluid supply (for example, by a plunger pump) from the tank with excess return through the level edge of the bath back by gravity (the mechanism for maintaining a constant level and capacity are not shown in the drawings). Each slot 3 on the top floor 12 of the rotor is coaxial in the guides 13, providing reciprocating motion parallel to the axis of the rotor, holders 14 are placed. Each holder 14 with the help of the mounted roller 15 is kinematically connected to the profile of a circular copier 16 fixedly fixed with an axis rotor. The circular copier 16 has a portion 17 holding the holder 14 in its initial upper position, a portion 18 for providing a fluid dose set, a portion 19 for providing liquid application alternating with a portion 20 for slightly lifting the holder 14 when the slot 3 is turned, and a portion 21 for returning holder to original position. Each holder 14 ends with a head 22 (see FIG. 2) in which, within the contour of the projection, the places of application of the bone are displaced with a pitch, non-multiple step of rotation of the slot, carrying a dose of 23 liquid rods 24, pressed independently of each other in the direction of contact with the product individually springs 5. The head 22 is a metering tool. The pitch between the rods 24 ensures the occurrence of capillary forces in the gap between them. Thin lines 26 show the outline of the projection of the place where the liquid is applied to the product 4 .. The device operates with continuous uniform rotor rotation. In the zone corresponding to the second half of section 17 and the beginning of section 18, copier 16, slot 3 is loaded and fixed in position 3. Holder 14, which interacts with stationary cam 16 during rotation of the rotor, lowers rods 24 to portion 18 to the set depth in bath 9 with a liquid 10 - and raises them with a dialed dose of 23. In section 19, the holder 14 lowers the dispenser until it contacts the surface of the product 4. When a random protruding unevenness gets under any rod, it moves (sinks) relative to the others to come into contact with the surface of the product 4 for applying a part of the dose 23. In the area 20, in order to prevent damage, the holder 14 raises the dispenser above the surface of the product 4, while the nest 3, under the influence of the section 7 of the copier line 6, turns its lever 5 on its lever 5, replacing the rods 24 the places of the product 4 that are not wetted by liquid. Then, the rods 24 are re-contacted with the product 4 with an intermediate (between the contacts) rotation of the socket 3 and the holder 14 is retracted to the initial upper position. In the zone corresponding to the first half of the section 17 of the copier 16, the product 4 is coated in the desired places with the liquid is discharged. In view of the fact that each extrusion 24 leaves several overlapping prints on the surface of the product 4, the liquid covers the desired surface along a strictly defined contour 26 with clear boundaries. The proposed device will allow to mechanize the process of applying a liquid to the surfaces of products and significantly increase productivity. Claim 1. Device for applying fluids or other fluid substances to parts, with holding capacity with liquid, slot for placing the product with its mechanism of movement, dispenser, mechanism of moving the dispenser, characterized in that, in order to improve the quality and performance of application liquid to the surface of the product.