JPS5889959A - Pile dropping device for electrostatic flocking - Google Patents

Abstract

PURPOSE:To prevent formation of a ball and to disperse and drop piles uniformly, by providing supply shafts formed with metering grooves in contact with a chute in the lower part of vane wheels provided horizontally in a hopper. CONSTITUTION:Revolving shafts 8, 8- of the same number as the number of worms 6, 6- are provided to the bearings 7, 7 provided on the side surfaces on the side opposite from the hopper side surface on a revolving shaft 4 side. Roll type supply shafts 11, 11- are supported pivotally on the lower side in the positions where the shafts 8, 8- are set. Metering grooves 15 are engraved to the shafts 11 to form supplying clearances 16 between the same and a divider plate 14. A wire screen 18 of set meshes such as 30 meshes is extended between the shafts 11 and the lower dropping port 17 of a hopper 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The disclosed technology belongs to the field of fiber supply technology in which a work is used as a negative electrode, short fibers are charged by passing through a high-pressure positive electrode, and electrostatically flocked.

Therefore, the present invention is a method for producing a static electricity supply system of the Hong-Mother type in which short fibers passing through a high-voltage electrode (hereinafter referred to as "pile") are dropped and supplied onto the upper part of a high-voltage electrode that is installed on a workpiece having a flocked surface such as an automobile door trim. This invention relates to a pile dropping device for electro-flocking, and in particular, an impeller for removing the stored pile is installed horizontally at a predetermined position inside the hair pile so as to be able to rotate in multiple directions, and is supplied between the impeller and the lower drop opening. The shaft is rotatably provided, and a groove is provided around the supply shaft to measure the amount of falling pile, and the impeller and the supply shaft are rotated by a rotary drive device on the side of the main shaft. This invention relates to a device for dropping electrostatic flocking.

As is well known, in order to plant about one short fiber called a pile on a flocked object, the flocked object is grounded, and an electrostatic charge is applied to the pile as it passes through a high-voltage electrode provided above. A so-called electrostatic flocking technique has been developed and adopted in which the flocking is carried out by adsorption to an adhesive applied to the surface of the flocked body.

Nowadays, for example, the inside of a car or the motherboard.

The electrostatic flocking is widely used on the surfaces of door trims and pillar inner panels to provide flexibility and improve the appearance of the design.

By the way, in conventional electrostatic flocking, the pile was appropriately dropped between the workpiece and the high-voltage electrode so as to be as average as possible.

Because of the sashimi, this type of falling pattern has the disadvantage that the amount of falling tends to vary spatially and falls unevenly, and therefore, the flocking distribution on the work surface will also be uneven, resulting in poor quality of the product. There was a problem with it becoming defective.

In addition, the pile itself is made to have an appropriate amount of moisture so that the distribution of positive charges is more favorable when passing through the high-voltage electrode.

Alternatively, when it falls from a conch or a colander, it tends to form a so-called bead due to the moisture, and therefore, the falling state also tends to be beaded, and as a result, the flocked state of the workpiece surface may be beaded, and from this point of view, the product There is a disadvantage that defective products are easily produced.

The purpose of this invention is to solve the problem of pile falling in electrostatic flocking based on the above-mentioned conventional technology, to prevent the formation of balls by stirring with an impeller in the hopper, and to supply a metering grooved flock. Excellent electrostatic flocking tJ? which can benefit the automotive industry applications of electrostatic flocking by uniformly dispersing and dropping it through the shaft. The purpose of this project is to provide a drop-off device.

The structure of the present invention in accordance with the above-mentioned object solves the above-mentioned problems by linking a supply shaft having a metering groove between the root wheel and the dropping port below it to a rotary drive device, and thereby improves the storage in the hopper.・
The 2-il is agitated by the multiple impellers and sent to the supply shaft at the bottom without forming a bead, and is evenly distributed through the circumferential groove of the supply shaft, and is sent from the high-voltage electrode to the work surface through the drop port. The gist of this is to ensure that it falls evenly.

Next, one embodiment of the present invention will be described below based on the drawings. 0 1 is an electrostatic flocking/dropping device for electrostatic flocking which constitutes the gist of the invention;・
A motor 3 with a reducer as a rotary drive device is provided on the outer surface l side of 4'2, and its rotating shaft 4 traverses along the other outer surface and is rotatably connected to a bearing 5 on the other side. A set number of worms 6, 6, etc. are fixedly installed at set intervals.

The bearing 7.7 provided on the side opposite to the hollow/mother side on the rotating shaft 4 side has the above-mentioned worm, and the worm gear 10. ．6... Also, the rotating shafts 8, 8
... At the lower setting position is the roll type supply shaft 11,1.
1... are the same in number as the rotating shafts 8, 8..., and are rotatably supported by bearings 12, 12... in parallel thereto,
At the outer end of the worm 6, there are worm gears 13, 13...
* is fixedly installed and similarly meshes with the worm 6.6.

Incidentally, as shown in the meshing diagram of FIG. 1, the worm gears 13, 13, . . . are placed as close as possible, although they do not contact each other.

As shown in FIG. 3, divider plates 14, 14, . ing.

In addition, as shown in the explanatory view of the mechanism in FIG. 4, the supply shaft 11 has a single spiral measuring groove 15 (for example, depth 8111 II 11 width 3.5
wn, etc.) are carved to form a supply gap 16 between the divider plate 14 and the divider plate 14.

Between the supply shaft 11 and the lower drop opening 17 of the hopper 2, a wire gauze 18 of a set mesh, for example, 30 meshes, is stretched.

In the above-mentioned configuration, the holder 2 is set via the stand above the set height of the adhesive coating work (not shown) and the high-voltage electrode above it, and a d'il group of set length is placed inside it. .

When the high voltage electrode is energized and the motor 3 is started via a rotation speed control device (not shown), one impeller 9.
9... and the supply shaft 11 rotate at a set speed ratio.

In this case, the impellers 9, 9... produce a kind of disturbance action and blowing action, supporting the disturbance on the pile from above and loosening it to prevent the aforementioned bead formation due to the moisture. It is evenly dispersed and fed into a chute 14, 14, and dropped.

Each of the chutes descending from the chute 14.14...
The measuring groove 15 of the supply shaft rotates individually.
and the chute 14 into the metering groove 14, accurately weighed, and the screw feed 9 of the metering groove 14
As a result of this action, it is further uniformly dispersed and falls.

Next, it is further uniformly dispersed in a tertiary manner by the lower wire mesh 18, passes through the lower high-voltage electrode (not shown) in a completely uniformly dispersed state from the drop port 17, is electrostatically charged, and drops vertically onto the workpiece. Poke it into the surface adhesive at right angles.

Therefore, the falling pile group is uniform and even, and the flocking condition is considered to be a high quality product with no lumps.

Although it is guaranteed that the pile falls at a constant rate over time, it is possible to easily control the amount of pile fall per hour by controlling the rotational speed of the motor 3.

It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, various embodiments may be employed, such as vibrating the wire mesh or intersecting the rotating shafts of the impeller vertically and horizontally. As mentioned above, according to the present invention, in the dropping device for electrostatic flocking, a set number of impellers are installed horizontally in the hopper, so that the process of dropping the moist pile group Even if beads are formed between each other due to the moisture, the impeller disturbs them and no beads are formed.

In addition, the crushed particles do not form balls at the lower part of the impeller due to the blowing action, and moreover, an excellent effect is achieved in that they are primarily dispersed and dropped.

Furthermore, by rotatably providing a supply shaft with a set number of measuring grooves engraved in contact with the chute at the lower part of the impeller, the above-mentioned ``first distributed non-bead-shaped pile group'' is metered and the second Next, the fluff is uniformly dispersed and dropped from the drop opening, resulting in an excellent effect in that the flocking on the product is uniformly dispersed and stable without any lump formation.

In addition, since the impeller and the supply shaft are linked to a rotational drive device, the rotational speed of the impeller and the supply shaft is controlled to be slow, thereby increasing the amount of drop per hour. It can be controlled with a little flexibility, and the product has the effect of being versatile, allowing the density of flocking to be adjusted freely.

And, if the impeller and supply shaft are designed to be interlocked, 1
The blade feeding, crushing, and metering/dispersion are linked regardless of the amount of fall, resulting in the excellent effect of achieving stable, uniform, and uniform fall.

[Brief explanation of drawings]

The drawings are explanatory diagrams of one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a partial cross-sectional view, and Fig. 3 is a cross-sectional view of Fig. 2.
[[1 sectional view and FIG. 4 are partially enlarged views of the supply shaft. 1...Yair drop device, 2...Hooray. 9... Impeller, 14... Chute. 15... Measuring groove, 11... Supply shaft, 3...
・Rotary drive device applicant Toyota Motor Corporation Figure 3 15 ”'

Claims (1)

[Claims] In a pile dropping device for electrostatic flocking of the horn type, which is installed on a high-voltage electrode facing the workpiece, a set number of measuring grooves are formed in contact with the chute at the bottom of multiple impellers installed horizontally in the hopper. A pile dropping device for electrostatic flocking, characterized in that the impeller and the supply shaft are connected to a rotary drive device provided on the side of the horn.