JPS5828087B2 - The onion stork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mixing and discharging apparatus suitable for producing a synthetic resin foam board using a synthetic resin, particularly a resin that hardens at room temperature.

As shown in Fig. 1, a conventional device of this type consists of an injection port A equipped with a valve mechanism for controlling injection of resin stock solution, a cylindrical chamber B, and a nozzle portion C having a funnel-shaped lower end. It is composed of a vertical housing D and a rotary blade body E that rotates concentrically with the housing.

Therefore, the resin stock solution is poured into a large number of twisted blade pieces e from the injection port A.
, are conveyed in series through the twisted blade group e2 to the lower end of the housing while being mixed, and are moved from the nozzle part C through a hose etc. to form various linear shapes on the base material. The material was discharged in a pattern, then heated and formed into a resin foam layer plate.

Therefore, with this configuration, it is difficult to discharge (spray) a two-liquid mixture type, for example, polyurethane resin, which starts a reaction upon mixing and rapidly increases self-adhesiveness, in a fixed pattern over a long period of time due to the nozzle shape of the resin discharge portion.

In other words, when discharging from the lower end of the nozzle, the self-adhesiveness is increased by mixing, and in order to transfer it, it is necessary to forcibly feed the resin stock solution and push out the resin being mixed below.

However, due to slight unevenness in transfer, the resin immediately adheres and accumulates on the inner peripheral wall of the nozzle and hose due to its self-adhesive properties, impairing the flow of the resin and causing a change in the discharge amount.

As a result, the pattern immediately changes as the cross-sectional area of the flow path changes, making it difficult to obtain a uniform pattern over a long period of time.

Furthermore, when forming a pattern on a base material, it is also possible to draw a linear pattern by moving the base material horizontally at a constant speed and then reciprocating the hose connected to the nozzle from side to side at a constant speed. , dead points occur at the left and right ends, making it impossible to spread the resin uniformly due to inertia.

In particular, it is very difficult to form a narrow resin plate because the number of reciprocating movements increases dramatically.

Furthermore, if a resin liquid whose self-adhesive properties are rapidly increasing is discharged from a small diameter nozzle only by pressure, the flow rate must be increased to some extent, making it difficult to manufacture homogeneous thin plates.

The present invention is capable of discharging (sprinkling) a resin liquid that increases self-adhesiveness during mixing in a uniform pattern over a long period of time, and can also form thin resin plates as desired, as well as form desired patterns. We propose a mixing and discharging device for room-temperature curable resin that can be used.

To explain in detail with reference to the drawings below, FIGS. 2a and 2b are longitudinal cross-sectional views showing one embodiment of the room-temperature curable resin mixing and discharging device (hereinafter simply referred to as the discharging device) according to the present invention. It is a top view of a rotary blade body.

In the figure, 1 is a vertical housing with an inlet 2 having a valve mechanism (not shown) similar to that in Figure 1 at the upper end, and a lower end 3.
is formed into an open end shape.

Note that although the figure shows a two-liquid reaction type, either the left or the right may be used for a -liquid reaction type.

Reference numeral 4 denotes a rotary blade body, which has a resin guiding protrusion 5 facing the resin injection port 2 and a screw hole 6 for connecting to the motor M.
a head 7 having a head 7 and a twisted blade group 8 for mixing and transferring resin
and a main shaft 9 arranged around the periphery.

To explain in more detail, the torsion blade group 8 is 10 mm with respect to the horizontal line.
A plurality of stages of twisted blade pieces 10 twisted by ~60° are arranged in series at equal intervals (eight pieces in the figure) around the main shaft 9.

In order to manufacture this, a plurality of disks on which the torsion blade pieces 10 with a plate thickness of t are to be formed are provided in the vertical direction on a cylinder with a required outer diameter, and in order to form the required number of torsion blade pieces thereon, the disks are placed on equal dividing lines to form the required number of torsion blade pieces. Provide a notch in the

Next, these are arbitrarily inclined at an angle of 200 or 600 with respect to the horizontal line, and arranged so that their tips draw a spiral from above the main shaft 9 to below.

Further, in order to attach the rotary blade body 4 to the housing 1, it is installed concentrically with the axis of the housing, and so that the lower end of the torsion blade group 8 slightly protrudes from the open end of the housing.

When a twisted blade piece is used, the protrusion width is preferably equal to the length of the twisted blade piece in the vertical direction.

Furthermore, the outer diameter d of this rotating blade body and the inner diameter d of the housing.

d between. -d=d1 gap.

The shape of this rotary blade body is such that the tips of the torsion blade pieces 10 are arranged in a multi-striped helix as shown in Figure 3a, or the number of twisting blade pieces is adjusted in the upper and lower parts as shown in Figure 3B. (or) the twist angle can also be varied.

This is a rotary blade body in which the upper twisted blade pieces are used simply for mixing, the arrangement thereof does not necessarily have to be in a helical pattern, and only the lower end has both mixing and transfer functions.

In this discharge device consisting of the rotary blade body and the housing, the resin liquid fed from the inlet 2 is transferred to the 280
The particles are mixed and transferred at a rotational speed of approximately 500 rpm, and are discharged (dispersed) in a ring shape onto a substrate or the like by the lower end of a group of twisting vanes 8 slightly protruding from the open end of the housing due to the centrifugal force at this time.

When the rotary blades shown in FIG. 3a are used in a conveyor-type molding machine that moves at a constant speed in the horizontal direction on which a substrate is placed, for example, a pattern as shown in FIG. 4a is drawn.

Further, when the rotary blade body shown in FIG. 3 is used, a double ring pattern as shown in FIG. 4 is drawn.

More specifically, for example, if the torsion angles of the torsion blade pieces near the open end of the housing are regularly varied, the fourth
A double ring pattern as shown in the figure is obtained.

Specifically, for twisted blade pieces that divide the circumference of the main shaft 9 into 8 equal parts, the twist angle of the odd numbered blade pieces is set to 15°, and the torsion angle of the twisted blade pieces corresponding to the same number is set to 300°. be.

5a and 5b show a state in which a flow passage 11 for compressed air, hot air, Freon gas, etc. is provided above the housing 1 or on the peripheral wall thereof.

This is also effective in varying the discharging state of the resin liquid, that is, the dispersion pattern. Figure 5 a shows a mechanism that applies pressure to the resin that has been transferred by centrifugal force, screw action, etc., and is effective at the open end of the housing. The ejection force (centrifugal force) when discharging to the outside can be varied depending on the pressure of the compressed air, and the pattern can also be changed by this.
Furthermore, when hot air, Freon gas, etc. are used, the foaming timing and bulk of the resin can be controlled.

In the case of FIG. 5, a curtain of compressed air is provided in a trumpet-shaped area around the outer periphery of the housing to suppress scattering of the resin.

At this time as well, the pattern can be varied to some extent by changing the pressure of the compressed air.

FIG. 6 shows a method that is effective for adding inorganic substances, such as powder particles (approximately 20 to 200 mesh), to resin and discharging (spraying) the mixed state, and sending it to an appropriate location in the housing 1, for example, an intermediate position. The supply port 12 is provided with an inclination of 0 to 800 (600 is shown in the figure).

Therefore, for example, borax, etc., which are difficult to mix with the resin in bulk molding, can be discharged in a mixed state with the resin, and a resin foam board in a mixed state of organic and inorganic materials can be formed.

In the past, in order to manufacture such a plate, a mixing device for mixing the resin and the powder was required.

Furthermore, when manufacturing a plate using such a discharge device, not only one such discharge device but also a seventh
As shown in the figure, for example, when manufacturing a wide plate, three discharge devices may be arranged in a straight line, multiple discharge devices may be arranged in a staggered manner, or heights may be provided between the open ends of these discharge devices and the substrate. It is also possible to manufacture.

In particular, when a belt conveyor molding machine on which the substrates are placed, for example, moves horizontally at a constant speed, it is possible to manufacture the substrates by connecting them in a homogeneous pattern.

Next, the operation of the discharge device according to the present invention will be briefly explained.

It is now assumed that the dispensing device shown in FIG. 2 is driven by a motor M, and that, for example, the metal plate 13 is moving at a constant speed in the horizontal direction.

At this time, the two-component reaction type unfoamed polyurethane resin liquid collides with the head 5 from the injection port 2 having a valve mechanism by driving the motor.

Then, while being scraped by the guide section, it is fed downward by air pressure and pressure from above.

The resin is mixed and transferred to the open end of the housing through the synergistic effects of the screw action and gravity generated between the spirally arranged twisting blades and the inner wall of the housing, as well as centrifugal force.

At the same time as the resin passes through the open end of the housing, the resin that has been transferred and mixed by the above action is scattered by the centrifugal force of the rotary blade body 4.

As a result, a locus with a pattern similar to a ring or an ellipse is obtained.

On the other hand, since the metal plate 13 is moving at a constant speed as described above, a pattern as shown in FIG. 4aK is continuously formed.

It is heated and pressurized to form it into a plate.

What has been described above is only one embodiment of the present invention.
The guide part is formed into the locus of a part of a loose helix,
It is also possible to install the twisted blade pieces separately from the main shaft instead of integrating them.

Further, the resin injection port 2 can also be formed at an arbitrary angle, and the flow path 11 can be provided in a spiral shape.

Further, the positional relationship between the lower end of the housing and the lower part of the torsion blade group can also be extended considerably longer than described above, depending on the viscosity of the resin used.

As described above, the dispensing device according to the present invention has a major feature that unlike the conventional method, the open end of the lower mixing end directly dispenses onto the substrate, etc., so that resin does not adhere to the mixer and continuous production can be performed in a constant pattern for a long period of time. be.

Furthermore, any pattern can be easily obtained depending on the width of the substrate, and the discharge amount can be varied over a wider range from a small amount to a large amount than before, so it has the feature that even thin and thick plates can be easily produced.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical sectional view showing an example of a conventional mixing device for room temperature curable resin, and FIGS. 2 a and b are longitudinal sectional views showing an example of the mixing and discharging device for room temperature curable resin according to the present invention. FIGS. 3a and 3b are schematic front views of only the lower end portion showing other embodiments of the rotating blade that is the main part of the present invention, and FIGS. 4a and 4b are plan views of the rotating blade body, which is the main part. A plan view showing an example of a pattern obtained by the mixing and discharging device for room-temperature curable resin according to the present invention, FIGS. FIG. 6 is a schematic vertical cross-sectional view showing a state in which an inorganic powder supply port is provided in the vertical housing in the same way as above, and FIG. 7 is a mixing and discharging device for room temperature curable resin according to the present invention FIG. 2 is a partial cross-sectional explanatory diagram showing a state in which three of these are arranged in series in the horizontal direction and its pattern, and a diagram of its pattern. 1...Vertical housing, 2...Resin injection port, 3...Lower end, 4...Rotating blade body, 7...Head Section 8...Twisted blade group,
9...Main shaft, 10...Twisted blade piece.

Claims (1)

[Scope of Claims] 1. Comprising a vertical housing with an open bottom end and a rotating blade body concentrically attached to the housing, the rotating blade body includes a main shaft and a plurality of torsional blades provided around the main shaft. A mixing and discharging device for room-temperature curable resin, comprising a group of twisted blades arranged in a plurality of stages in the vertical direction, and installed so that the lower end of the twisted blade group protrudes from the lower end of the housing. . 2. For room-temperature curing resin comprising a vertical housing with an open lower end and a rotating blade body concentrically attached to the housing, the lower end of the torsion blade group of the rotating blade body protrudes from the lower end of the housing. A mixing and discharging device for room temperature curable resin, characterized in that a plurality of mixing and discharging devices are arbitrarily arranged.