JPH02222746A - Equipment for foaming, mixing and spreading adhesive - Google Patents

Abstract

PURPOSE:To produce an admixture of gas, an additive and an adhesive having an arbitrary ratio by controlling the volume difference by both high-frequency mixing and agitating action and operation at variable velocity of a quantitative type rotary pump and a rotary pump type spreader. CONSTITUTION:The discontinuous driving mechanisms 17-19 are connected so that supply and transfer of the quantitative type rotary pumps 7, 11 and spreading action of a rotary pump type spreader 15 can be discontinuously controlled. Furthermore the reduction driving mechanisms 21, 22 are interposed between single side of the mechanisms 17-19 and a driving source 20 respectively so that the admixture of an adhesive, gas and an additive can be mixed at an arbitrary ratio by the method described hereunder. In other words, the set transfer amount of the admixture of the adhesive and gas supplied by the pump 11 is reduced at arbitrary amount for the set spreading amount of the admixture of the adhesive, gas and an additive spread by the spreader 15. Then the additive is sucked into a mixing circuit 6 only at the volume difference and the adhesive, gas and the additive can be mixed at the arbitrary ratio. Further the set feed amount of the adhesive supplied by the pump 7 is reduced at arbitrary amount for the set transfer amount of the admixture of the adhesive and gas supplied by the pump 11. Then gas is sucked into a mixing circuit 5 only at the volume difference and the adhesive and gas can be mixed at the arbitrary ratio.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is directed to the use of gases such as air, nitrogen, etc. A foamed adhesive is produced by blowing in compressed gas such as gas or carbon dioxide gas, and then a predetermined amount of additives such as a curing agent and a crosslinking agent are mixed into this to form a mixture, which is then applied to the bonding area. Adhesive foaming mixture number 1 used when applying intermittently
This type of foam mixing and dispersing equipment was developed mainly for application to adhesive application equipment to wide plate-like bodies such as veneer veneers in the manufacturing process of veneer plywood. It is.

(Prior art) A conventional technology of blowing gas such as compressed air into an adhesive such as urea resin to generate a foam adhesive is, for example, disclosed in Japanese Patent Publication No. 52-1989.
No. 32741, Japanese Patent Publication No. 5232742, foaming device, and U.S. Pat.
No. 0 PLYro 000 HANtJFACTURE US
ING FOAHED GLUES etc. are disclosed.

In addition, the conventional technology of preparing a mixture by mixing predetermined amounts of additives such as hardeners with adhesives such as urea resin, does not involve manually measuring predetermined amounts of adhesive and additives in advance and then stirring and mixing. A so-called two-component pre-mixing means is used to prepare a mixture, or the adhesive and additives are transported separately to the mixing section using a metering pump such as a plunger pump while being mechanically stirred and mixed using a rotary mixer or the like. So-called two-component premixing means for preparing products are well known.

Furthermore, as a conventional technique for intermittently applying the mixture of adhesive and additive prepared above to the bonded area, a roll-type application means such as a roll spreader comprising a coating roll and a squeezing roll is well known.

[Problem to be solved by the invention]

Japanese Patent Publication No. 52-32 in which a foam adhesive is produced by blowing gas such as compressed air into the adhesive such as urea resin of the above-mentioned prior art.
Foaming means such as No. 741 and Special Publication No. 52-32742 are
The series units of pores, openings, and mixing parts are formed in multiple stages inside the cylinder, and the introduced liquid and gas are mixed continuously and instantaneously to form foam, or the units arranged in multiple stages inside the cylinder are used. Because it was a stationary foaming device that foamed by continuously and instantaneously mixing the liquid and gas introduced by forming the pores of the hole partition plate from the periphery toward the center, the other U.S. Patent No. 3 .8
No. 95.984 and U.S. Patent No.
Although it is simpler and more economical than a rotating type foaming device that uses mechanical force formed by a rotor (rotor) and a stator (5TATOR), the foaming function of a stationary foaming device is slightly inferior. There is instability, especially in the case of hardening type adhesives that use hardening agents, crosslinking agents, etc. Because the so-called snowdrift area in the inner corner cannot be removed by washing it away with cleaning water, the residual adhesive hardens over time, and it often peels off and falls off unexpectedly, clogging the flow path, resulting in many functional failures. Instead of boiling it down, replace the RECESSES (concave part) with 80 OR (rotor).
The method using a rotary foaming extrusion means formed on the TATOR (stator) uses mechanical force to extrude the mixture by adjusting the supply amount of adhesive using a variable rotary pump and the amount of gas blown using a pressure reducing valve. Since the mixing ratio was adjusted, there was a problem that the mixing ratio fluctuated unstably depending on the viscosity, temperature, etc. of the adhesive.

Furthermore, the prior art pre-mixing means for preparing a mixture by mixing predetermined amounts of additives such as hardeners for adhesives such as urea resin requires workers and is always limited by the pot life of the mixture. Furthermore, the prior art two-component pre-mixing means is not suitable for automated processes, and the prior art two-component pre-mixing means is not equipped with an open mixing tank or rotary mixer for mixing and stirring the adhesive and additives immediately before the coating operation. Since it was customary to equip an open roll spreader for applying the liquid to the bonded area, the open parts of these devices and the stagnation areas of the maze-like flow channels could be used after the pot life had elapsed. This has the disadvantage that the mixture gradually sticks, making it difficult to continue the coating operation smoothly, and cannot be easily removed with washing water or the like.

The present invention addresses the disadvantages of the above-mentioned conventional device, which blows gas such as compressed air into the adhesive to produce a foamed adhesive, and applies the foamed adhesive to the bonded area, and the conventional device, which has the disadvantages of mixing and applying the adhesive and additives. In order to eliminate these problems and inconveniences, we developed a simple structure in which right-handed elements and left-handed elements are alternately orthogonally connected in multiple stages in the pipe, and there are no open parts or labyrinth-like retention points in the flow path. The high-frequency mixing and stirring action of the static mixer, for example tens of thousands of times or more, and the variable speed operation of the metering type rotary pump and rotary pump type spreader connected before and after the static mixer reduce the difference in capacity. By adjusting the ratio of the gas supplied to the static mixer and the additive, a suction mixing action is performed to obtain a mixture of an arbitrary ratio, and also to prevent solids and dust from entering the adhesive, which are usually likely to be introduced. Intermittent drive control using a rotary pump-type spreader that is resistant to contamination, and low extrusion pressure that is open without using an on-off valve or throttle valve. scattered under 1
A new adhesive that can be applied to a two-component, just-mixed foam adhesive that is configured so that the additive-containing foam adhesive can be sprayed uniformly over the entire surface directly from the five machines onto the top surface of a wide plate. The purpose is to develop a foam mixing and dispersing device.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention is capable of producing a mixture by mixing and stirring supplied adhesive such as urea resin, gas such as compressed air, and additives such as curing agent. First and second mixing circuits each having a static mixer in which elements and left-handed twisted elements are alternately orthogonally connected in multiple stages are provided, and then an adhesive is placed in an adhesive tank on the inlet side of the first mixing circuit. An adhesive supply circuit equipped with a first metering type rotary pump such as a gear pump is provided so as to be able to supply the stored adhesive such as urea resin, and then a gas such as compressed air is supplied to the inlet side of the first mixing circuit. A gas supply circuit equipped with a pressure reducing valve is provided so that the mixture of the liquid adhesive and a gas such as compressed air is supplied to the outlet side of the first mixing circuit. A mixture transfer circuit equipped with a second metering type rotary pump such as a gear pump is provided to transfer the mixture to the second mixing circuit, and then a curing agent, etc., stored in an additive tank is provided on the inlet side of the second mixing circuit. An additive supply circuit is provided so as to be able to supply the following additives, and then a mixture of the adhesive, gas, and additive is applied to the top surface of a plate-like body such as a plywood veneer on the outlet side of the second mixing circuit. This is a foaming, mixing and dispersing device for adhesive, which is equipped with a mixture dispersing circuit equipped with a rotary pump type dispersing machine so as to enable dispersion in the form of a hot cloth, and has the following structural requirements.

a) The first and second metering rotary pumps and the rotary pump are capable of intermittently controlling the supply, transfer and spreading operations of the first and second metering rotary pumps and the rotary pump sprayer. An intermittent drive mechanism such as an electromagnetic clutch brake is connected to each type spreader.

b) reducing the set transfer rate of the adhesive, gas mixture by the second metering type rotary pump by a desired amount with respect to the set spread rate of the adhesive, gas, and additive by the rotary pump type spreader; By doing so, the additive can be sucked into the second mixing circuit by the volume difference and mixed in any ratio. A deceleration drive mechanism such as a variable speed reducer is interposed between the

C) By reducing the set supply amount of the adhesive by the first stationary rotary pump by a desired amount with respect to the set transfer amount of adhesive and gas by the second metering rotary pump, the amount of the adhesive is reduced by the difference in volume. The input shaft of the intermittent drive mechanism on the first treasure-type rotary pump side and the input shaft on the second metering-type rotary pump side are capable of sucking the gas into the first mixing circuit and mixing it in an arbitrary ratio. A deceleration drive mechanism such as a variable speed reducer is interposed between the intermittent drive groove and the input shaft.

[For production]

Since the present invention is configured as described above, the adhesive such as urea resin stored in the adhesive tank is brought to an appropriate pressure by an adhesive supply circuit equipped with a first metering type rotary pump such as a gear pump, for example. A gas supply circuit pressurized to a pressure equal to or less than J/cm and supplied to the input side of a first mixing circuit equipped with a static mixer, and further equipped with a pressure reducing valve on the input side of the first mixing circuit. For example, by supplying a gas such as compressed air adjusted to an appropriate pressure, for example, about α5/cIi, a high-frequency mixing and stirring action of tens of thousands of times or more is carried out in the static mixer of the first mixing circuit. 2 by connecting more than 10 right-handed and left-handed elements in series.
A mixture of the liquid adhesive and a gas such as compressed air is generated while passing through the static mixer by performing a mixing and stirring action of the number of elements of the liquid adhesive and a gas such as compressed air. The mixture is transferred via a mixture transfer circuit with two metering rotary pumps to the inlet of a second mixing circuit with a static mixer. Furthermore, an additive such as a curing agent stored in an additive tank is connected to the inlet side of the static mixer of the second mixing circuit so that it can be supplied from the additive supply circuit, and the additive is reused in the static mixer. The same high-frequency mixing and stirring action as described above is performed tens of thousands of times or more to generate a mixed and stirred mixture of the adhesive, gas, and additive while passing through the static mixer, and the next step is performed. A rotary pump type spreader, for example, a rotary pump type spreader having a structure in which a pair of wide impellers are housed in a casing, is used to transfer the water to the bow. In addition, the next-stage rotary pump type sprayer uses an on-off valve or a throttle valve to open the flow path without closing it under a low extrusion pressure, for example, several Ky/c.
A mixture of adhesive, gas, and additives is directly and intermittently extruded under a low extrusion pressure of less than tit, and the additives are applied to the top surface of a plate-like object such as a veneer veneer that is conveyed by a conveyor directly below. The rotation of the rotary pump type sprayer is intermittently controlled by an intermittent drive mechanism such as an electromagnetic clutch brake so that the foamed adhesive can be spread evenly over the entire surface in a cascading manner. The second metering type rotary pump is configured to control the rate of spraying of the mixture of adhesive, gas, and additive by the rotary pump type sprayer, for example, a set rate of spraying of 101/man. By reducing the set transfer rate of the adhesive and gas mixture by a desired amount, e.g. 8-9 J! By reducing the transfer amount to a set transfer amount of about / min, the transfer amount is reduced by the difference in capacity, that is, 1 to 21! / min of the additive into the second mixing circuit and optionally, for example, 1:0°1
A deceleration drive mechanism such as a variable speed reducer is interposed between the intermittent drive mechanism on the second quantitative rotary pump side and a drive source such as a motor so that the mixture can be mixed at an arbitrary ratio of about 1:02, When the second metering type rotary pump and the rotary pump type sprayer are set differentially, for example, when the rotation speed of the 15 types of rotary pumps is set to 60 Orpm, the rotation of the second metering type rotary pump The number is variably set in a range of about 480 to 540 ppm to differentially control the mixing ratio of the adhesive/gas mixture and the additive. Next, the set transfer amount of the adhesive and gas mixture by the second metering type rotary pump is changed to 8 to 91/1 of the above example.
-, for example 8.1! /min, by reducing the set supply amount of adhesive by the first metering type rotary pump by a desired amount, for example, to a set supply amount of about 5 to 61 /min. , only the difference in capacity, i.e. 2~3 J/
The gas on the first metering type rotary pump side can be sucked into the first mixing circuit to mix the gas in an arbitrary ratio of, for example, about 1:025 to 1:0.375. A deceleration drive mechanism such as a variable speed reducer is interposed between the input shaft of the intermittent drive mechanism and the input shaft of the intermittent drive mechanism on the side of the second metering type rotary pump, The rotary pump is differentially operated, for example, the rotation speed of the second constant loss type rotary pump in the above example is set in the range of 480 to 540 rpm.
For example, when the speed is set to 480 rpm, the rotational speed of the first metering type rotary pump described in 1.66 is variably set in the range of about 300 to 360 ppm to differentially control the mixing ratio of the adhesive and gas. It is composed of

[Embodiment] A basic embodiment of the adhesive foaming mixing and dispersing device of the present invention is as shown in FIG. A gas such as compressed air supplied from an appropriate gas source is introduced into the inlet side of the static mixer 4 forming the first mixing circuit 5 and is mixed and stirred frequently while passing through the vessel. The static mixer 4 has a diameter of 20 mm as illustrated in FIG.
It is constructed by connecting right-handed elements 2 and left-handed elements 3, each about 40 meters long, alternately and perpendicularly in a stainless steel pipe 1 about 40 meters long, and usually connecting more than 10 of them in series. The mixing and stirring frequency enables the mixing and stirring action to be performed over tens of thousands of times, which is 2 to the power of the element number. Further, the gas such as compressed air introduced into the inlet side of the static mixer 4 is adjusted to an appropriate pressure by a pressure reducing valve 9, for example, 0.5 to 9/cI! It is configured such that it can be supplied to the gas supply circuit 10 after being reduced in pressure to about 1. Furthermore, the liquid adhesive stored in the adhesive tank 23 introduced into the inlet side of the static mixer 4 forming the first mixing circuit 5 is pumped by a gear pump as illustrated in FIG.
The adhesive can be intermittently supplied from the adhesive supply circuit 8 to the inlet side of the static mixer 4 at an appropriate pressure, for example, at a low discharge pressure of several kg/ci or less, using a first metering type rotary pump 7 such as a Mono pump or a vane pump. As such, the drive shaft of the first metering type rotary pump 7 is equipped with an intermittent drive mechanism 17 such as an electromagnetic clutch brake or a vacuum clutch brake that can freely control intermittent drive.

On the other hand, on the outlet side of the static mixer 4 forming the first mixing circuit 5, a second metering type rotary pump 11 such as a gear pump, mono pump, vane pump, etc. as illustrated in FIG. The mixture of adhesive and gas produced in the first mixing circuit 5 is transferred to the inlet side of the static mixer 4 forming the mixing circuit 6 from the mixture transfer circuit 12 at an appropriate pressure, for example, 9/2 cm
The drive shaft of the second metering type rotary pump 11 is equipped with an intermittent drive mechanism 18 such as an electromagnetic clutch brake or a vacuum clutch brake that can freely control intermittent drive so as to be able to supply intermittently at the following low discharge pressure. . Furthermore, additives such as a curing agent stored in the additive tank 24 introduced into the inlet side of the static mixer 4 forming the second mixing circuit 6 are directly transferred from the additive supply circuit 13 to the second mixing circuit 6. It is configured to be supplied into the mixing circuit 6. Next, on the outlet side of the static mixer 4 forming the second mixing circuit 6, a rotary pump having a structure in which a pair of wide impellers 25a and 25b are housed in a casing 26 as illustrated in FIG. 4 is installed. The mold spreader 15 is directly connected to the static mixer 4, which forms the second mixing circuit 6.
It is intermittently extruded directly into the atmosphere at a low extrusion pressure of less than g/li, and is applied as a foamed adhesive 28 containing additives to the upper surface of a plate-like object 14 such as a veneer veneer, which is conveyed directly below by a conveyor 27 or the like. The drive shaft of the rotary pump type spreader 15 is equipped with an intermittent drive mechanism 19 such as an electromagnetic clutch brake, a vacuum clutch brake, etc. that can control intermittent drive so that the coating can be applied evenly over the entire surface in a cascading manner. With,
Intermittent operation of the second metering type rotary pump 11 and the rotary pump type sprayer 15, which form the blending process of the adhesive, gas mixture, and additive, and the electromagnetic clutch brake, vacuum clutch brake, etc., which are intermittently driven and controlled. Drive mechanism 18.19
A deceleration drive mechanism 21 such as a variable speed reducer is interposed on one side, for example, between the intermittent drive mechanism 18 and a drive source 20 such as a motor, and the speed reduction drive mechanism 21 such as a variable speed reduction gear is controlled to control the rotation speed of the rotary pump type spreader 15, for example. When set to 600 rpm, the rotation speed of the second footrest type rotary pump 11 is 480 to 540 Pi)
When the deceleration δ2 is constant in a range of approximately Ill, and the set amount of the mixture of adhesive, gas, and additive by the rotary pump type sprayer 15 is, for example, 101/-, the second quantitative type The set transfer amount of the adhesive and gas mixture by the rotary pump 11 is 8 to 9 j! /man, and the additive is sucked into the static mixer 4 forming the second mixing circuit 6 by the difference in volume, that is, 1 to 21/man, and is freely adjustable. The adhesive, the gas mixture, and the additive can be blended at a freely adjustable mixing ratio of, for example, about 1:01 to 1:0.2. On the other hand, the first and second metering type rotary pumps 7 form a gas blowing process into the adhesive.
．． The electromagnetic clutch brake that controls the intermittent drive of 11;
A deceleration drive a122 such as a variable speed reducer is interposed between the input shafts of the intermittent drive grooves 17 and 18 such as a vacuum clutch brake, and the rotation speed of the second metering type rotary pump 11 is controlled by the When the speed is set to 480 rJ) In in the range of 480 to 540 rpm, the rotational speed of the first metering type rotary pump 7 is further reduced to a range of 300 to 36 Q rpm, and the second The set transfer amount of the adhesive and gas mixture by the metering type rotary pump 11 is within the range of 8 to 9 Jl/min in the above example, for example, 81 Jl/min.
/ layer, the set supply amount of adhesive by the first metering type rotary pump 7 is set to 5 to 6 layers.
The amount of gas is set to be about 100 liters per man, and the gas is sucked into the first mixing circuit 5 by the difference in capacity, that is, 2 to 3 Jl/man, under a freely adjustable mixing ratio, For example, it is configured such that gas can be blown into the adhesive at a freely adjustable mixing ratio of about 1:025 to 1:0.375.

The intermittent drive mechanism 17, 18. for intermittent drive or variable deceleration drive of the first and second metering type rotary pumps 7.11 and the rotary pump type sprayer 15 in the present invention.
19, deceleration drive mechanisms 21, 22, and the common drive source 20, for example, the first and second metering type rotary pumps 7.11 and the rotary pump type sprayer 11
It is also possible to directly mount a DC servo motor, an AC servo motor, etc. to each of the motors 5 to correspond to intermittent drive and variable deceleration drive.

〔Effect of the invention〕

Invention 4 As explained above, the pipe has a simple structure in which right-handed elements and left-handed elements are alternately orthogonally connected in multiple stages, and there are no labyrinth-like snowdrifts in the flow path. High vA with static mixer
The mixing and stirring action of IS'% high @ degree, for example tens of thousands of times or more, and the variable speed operation of the metering type rotary pump and the rotary pump type spreader connected before and after the static mixer reduce the difference in capacity. By adjusting the ratio of the gas supplied to the static mixer and the additive, a suction mixing action is performed to obtain a mixture of an arbitrary ratio, and the solids and other substances that are usually easily introduced into the adhesive are prevented. Low extrusion pressure of, for example, several KFI/ci or less is achieved by intermittent drive control using a rotary pump type spreader that is resistant to contamination with dust, etc., and low extrusion pressure that is open without using an on-off valve or throttle valve. This is an adhesive foam mixing and spraying device that is configured so that a poultice-like spray of additive-containing foam adhesive can be sprayed directly onto the top surface of a wide plate-like object directly from a spreader under the same conditions. Adhesives remaining in a corner of a cylinder or pipe that is formed in a similar manner progresses over time to harden and peel off unexpectedly, clogging the flow path, resulting in functional failure or extremely high-pressure opening/closing of the flow path. Problems such as functional failure due to clogging of solids or dust mixed into the adhesive due to equipment such as valves, and limited pot life due to the labor required for two-component pre-mixing means in conventional equipment. Therefore, it not only eliminates the drawbacks that made it unsuitable for automated processes, but also allows it to be used in open parts of equipment and retention points in labyrinth-like flow channels in the case of two-liquid immediate mixing means. It was possible to eliminate all problems such as the mixture gradually sticking after a period of time, making it difficult to continue the smooth application work, and not being able to be easily removed with washing water, etc. This results in the most useful function as a device for applying adhesive to veneer veneers, etc. in the manufacturing process of veneer plywood, etc.

[Brief explanation of the drawing]

The figures show an example of the implementation of the present invention, in which Fig. 1 is a layout diagram of the entire device, Fig. 2 is a partially cutaway side view of a static mixer, and Fig. 3 is a cutaway side view of a metering type rotary pump. FIG. 4 is a partially cutaway side view of the rotary pump type spreader. DESCRIPTION OF SYMBOLS 1... Pipe, 2, 3... Element, 4... Static mixer, 5... First mixing circuit, 6...
... Second mixing circuit, 7... First metering type rotary pump, 8... Adhesive supply circuit, 9... Pressure reducing valve, 10...
- Gas supply circuit, 11... second metering type rotary pump,
12...Admixture transfer circuit, 13...Additive supply circuit, 14...Plate body, 15...Rotary pump type spreader,
16... Mixture dispersion circuit, 17, 18, 19... Intermittent drive mechanism, 20... Drive source, 21.22... Deceleration drive mechanism. Patent Applicant: Hashimoto Electric Industry Co., Ltd. Figure 2 Figure 3 Figure 4 Procedure Ne... Mr. Sho 1 (Voluntary Submission) 1. Indication of the Case 1999 Patent Application No. 44416 4. "Patent Claim" in the specification to be amended 15. Contents of amendment (1) The scope of claims in the specification will be amended as shown in the attached sheet. (2) "Prior" written on page 7, line 1 of the specification is amended to read "two-liquid prior." (3) "Additives" listed on page 10, line 12 of the specification
shall be corrected as "admixture of additives". (4> Line 14 on page 10 and line 4 on page 11 of the specification. Change “desired” in line 18 on page 13 and line 18 on page 14 to “
Correct it to ``optional.'' (5) “Gas” described on page 11, line 2 of the specification is replaced with “
amended as ``gas mixture.'' (6) "and" written on page 19, line 1 of the specification is amended to read "each of." (7) “Ni-” stated on page 19, lines 5-6 of the specification
``... has been done'' is corrected as follows. ``By interposing a deceleration drive mechanism 21 such as a variable speed reducer,'' 2 above, the right-handed twisting element (2) and the left-handed twisting element (3) are alternately orthogonally crossed in the pipe (1). first and second mixing circuits (5, 6) equipped with static mixers (4) connected in multiple stages; an adhesive supply circuit (8) equipped with a fixed-rate rotary pump (7); and a gas supply circuit equipped with a pressure reducing valve (9) that supplies gas such as compressed air to the first mixing circuit (5). (10), and a second metering type rotary pump (11) such as a gear pump that transfers the mixture of adhesive and gas discharged from the first mixing circuit (5) to the second mixing circuit (6). ), an additive supply circuit (13) that supplies additives such as a curing agent to the second mixing circuit (6), and the second mixing circuit (6). A mixture dispersion circuit (15) equipped with a rotary pump type dispersion machine (15) for dispersing the mixture of adhesive, gas, and additives discharged from the above-mentioned adhesive, gas, and additives in a cascading manner onto the upper surface of a plate-like body (14) such as a plywood veneer (15); 16) An adhesive foaming mixing and dispersing device comprising: the first and second stationary rotary pumps (7, 11) and the rotary pump type sprayer (15) for supplying, transporting and dispersing operations; The first and second metering type rotary pumps (7, 11) and the rotary pump type sprayer (15) are each provided with an intermittent drive mechanism (17, 18, 19) such as an electromagnetic clutch brake so as to be intermittently controllable. ) and connect
Setting the spray amount of the adhesive, gas, and additive mixture by the second Teisha type rotary pump (11) with respect to the set spray amount of the adhesive, gas, and additive mixture by the rotary pump type sprayer (15). By reducing the amount transferred, the additive can be sucked into the second mixing circuit (6) by the difference in capacity and mixed at any ratio, and the second metering type rotary pump (11 ), the set supply amount of the adhesive by the first metering type rotary pump (7) is arbitrarily reduced with respect to the set transfer amount of the adhesive-gas mixture by the amount difference in capacity. The gas is passed through the first mixing circuit (5
), one side of the intermittent drive mechanism (17, 18, 19>) and a drive source such as a motor (
A deceleration drive mechanism such as a variable speed reducer (20) is connected to the person R between the
1, 22) A foaming mixing and dispersing device for an adhesive, characterized in that an adhesive foaming mixing and dispersing device is provided.

Claims (1)

[Claims] First and second mixing circuits (1) each equipped with a static mixer (4) in which a right-handed twist element (2) and a left-handed twist element (3) are alternately orthogonally connected in multiple stages in a pipe (1); 5, 6), an adhesive supply circuit (8) comprising a first metering type rotary pump (7) such as a gear pump that supplies liquid adhesive to the first mixing circuit (5); a gas supply circuit (10) equipped with a pressure reducing valve (9) that supplies gas such as compressed air to the first mixing circuit (5); an admixture transfer circuit (12) equipped with a second quantitative rotary pump (11) such as a gear pump for transferring the admixture to the second mixing circuit (6); The mixture of the adhesive, gas, and additive discharged from the additive supply circuit (13) that supplies additives such as a hardening agent and the second mixing circuit (6) is transferred to a plate-shaped body such as a veneer veneer. (14) An adhesive foaming mixing and dispersing device comprising: a mixture dispersing circuit (16) equipped with a rotary pump type dispersing machine (15) for dispersing in a cascade shape on the upper surface of the adhesive; The first and second metering rotary pumps (7, 11) are capable of intermittently controlling the supply, transfer and spraying operations of the metering rotary pumps (7, 11) and the rotary pump sprayer (15). and an intermittent drive mechanism (17, 18, 19) such as an electromagnetic clutch brake is connected to each of the rotary pump type spreader (15), and
A set amount of spraying of the mixture of adhesive, gas, and additive by the rotary pump type sprayer (15) and a set transfer of the mixture of adhesive, gas, and additive by the second metering type rotary pump (11). By reducing the amount by a desired amount, the additive can be sucked into the second mixing circuit (6) by the difference in capacity and mixed at an arbitrary ratio, and the second metering type rotary pump (11) By reducing the set supply amount of the adhesive by the first metering type rotary pump (7) by a desired amount with respect to the set transfer amount of the adhesive and gas mixture by the method, the gas is transferred by the difference in volume. The first mixing circuit (
5) A deceleration drive mechanism (such as a variable speed reducer) is installed between one side of the intermittent drive mechanism (17, 18, 19) and a drive source (20) such as a motor so that the mixture can be drawn into the interior and mixed at any desired ratio. 21,
22) An adhesive foaming mixing and dispersing device, characterized in that the adhesive foaming mixing and dispersing device is interposed.