JPS5821583B2 - Composite board manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus suitable for manufacturing a composite plate having a so-called sandwich structure in which a core material such as a synthetic resin foam is interposed between front and back materials.

Conventionally, the apparatus for manufacturing this type of composite board has usually been a bunch method in which the composite boards are manufactured individually using a mold.

In this case, the production efficiency is poor, and since there are two edges at each end of the long product, it is difficult to feed the product continuously.

In addition, when forming a cut plate, the edge of the cut plate collides with the forming roll, causing damage to the roll and excessive wear, making it difficult to produce a homogeneous product.

The present invention significantly improves these drawbacks and provides a composite plate manufacturing apparatus that can produce high-quality composite plates in large quantities at low cost.

EMBODIMENT OF THE INVENTION Below, one Example of the composite board manufacturing apparatus based on this invention is described in detail using drawing.

FIG. 1 is a schematic configuration diagram of the same as above, and 1 is a lower base material delivery section, which includes an uncoiler 2 equipped with a thin metal plate, which is the so-called lower base material A, a pinch roller 3, an impact reducing machine 4, a lanari, and the above. This is for attaching the lower base material A and continuously feeding it to the next process.

To explain further, the uncoiler 2 is used to attach the lower base material A, and the pinch roller 3 feeds out the lower base material A at a constant speed and serves as a guide section.

In addition, the impact reducing device 4 has a rotatable roller bar, and is supported by arms 5 that rotate both ends of the bar so that it can follow the displacement of the lower base material A by a certain angle. This is for feeding the lower base material A to a molding machine to be described later under constant tension.

6 is a common bed with the above uncoiler 2. pinch roll 3
The mechanism is fixed to the same base (frame frame) to prevent displacement between the two mechanisms and to improve stability.

Reference numeral 7 denotes a lower base material cutting machine, which is disposed as necessary between the pinch roller 3 and a forming machine to be described later, and is operated by a signal to be described later.

Reference numeral 8 denotes a molding machine which uses a plurality of rollers arranged in opposition to mold the lower base material A as shown in FIG.

9 is a foamable reaction mixture P (having self-adhesive properties) at the discharge part
In order to supply the mixture (hereinafter simply referred to as a mixture) to the recess a on the back surface of the lower base material A, for example, by a discharge method equipped with a rotating blade, a spray gun method (air, airless), or an injection method. belongs to.

The mixture P may form polyurethane foam, polyincyanurate foam, epoxy foam, phenol foam, urea foam, or the like.

Reference numeral 10 denotes a device to be laminated on the mixture P laminated in the base material delivery section, and includes, for example, an uncoiler (not shown), a guide 11, and a detector 12.

To explain further, as the upper base material B, asbestos paper,
It is made of aluminum foil, plastic sheet, asphalt felt, and a composite sheet material laminated with one or more of these materials, and functions not only as one side of the composite plate but also as a mold release material.

Further, the guide 11 guides the upper base material B in correspondence with the lower base material Ah, and also determines the timing for bringing the upper base material B into contact with the mixture P depending on the state of the mixture P (so-called
It has the function of making more effective use of the self-adhesive properties of the mixture) and leveling out the uneven dispersion of the mixture P.

Its structure is such that one roller can be moved up, down, to the left, and to the right up to the position shown by the dashed line in FIG.

In this case, it functions as an auxiliary extension of the type described later.

The detector 12 also detects cutting damage etc. of the upper base material B,
Along with this, the catering department 9. and pinch roller 3. At the same time as the signal to stop the operation of the molding machine 8, the lower base material cutting machine 7
It sends a signal to drive the.

Note that the detector 12 is a detector that uses electricity, magnetism, heat, and tension difference as a principle.

As a specific example, a plurality of phototubes 13 corresponding to the entire width of the base material B are disposed intermittently on a straight line, and photoreceivers 14 are disposed correspondingly on the opposing surfaces thereof.

15 is a mold that conveys the mixture P with it interposed between the upper and lower base materials A and B, allows the mixture P to react and foam well, and forms a composite plate SK having a predetermined thickness. .

Specifically, for example, a steel belt or a caterpillar is engaged between the driving wheels 16, 17 and the driven wheels 18, 19, and then,
Reinforcement rollers 22 and 23 are arranged on the back surface of the lower die member 20 and 21, and a heating device 24 is arranged on the back surface of the reinforcing rollers 22 and 23.
．． 25 are arranged.

To explain further, the reinforcing rollers 22 and 23 prevent the upper and lower mold members 20, 21 from deforming due to the foaming pressure of the mixture P, and the heating devices 24 and 25 move the inside of the mold by 50° to 90°.
It is useful for maintaining the temperature at 0°C, completing the reaction of the mixture P within a predetermined time, and exhibiting predetermined physical properties.

26 is a cover that keeps the inside of the mold 15 warm and prevents the release of sultrichloromonofluoromethane released during the reaction of the mixture P, or carbon dioxide gas, -carbon oxide, etc. released from the heating device into the working environment for safety and hygiene reasons. , and to obtain a more effective heat retention effect.

Incidentally, the openings of the mold and the outlet portions 15a and 15b are structured to prevent leakage of gas within the mold to the maximum extent possible.

Reference numeral 27 is a cutting machine that cuts the composite material delivered in a continuous strip form from the mold 15 into a predetermined length while it is running, and 28 measures the composite material with a gauge table and sends a signal to operate the cutting machine 27. To detect.

Reference numeral 29 denotes a secondary forming machine for forming the composite body delivered as a continuous body having the shape shown in FIG. 2 into the cross section shown in FIG.

Note that this is not necessary when the mixture P is discharged after the lower base material A has been molded from the beginning as shown in FIG.

Reference numeral 30 denotes a scattered matter absorbing section, which is provided as necessary to collect the mixture P when it is scattered outside a predetermined area to prevent it from adhering to others, for example, using a water tank or the like.

Reference numeral 31 denotes a conveying section, which is equipped with a plurality of rollers arranged in a roller conveyor shape, and is useful for conveying the lower substrate A to the next process.

The arrangement of these components is as follows: lower base material delivery section 1° molding machine 8. Type 15. Cutting machine 27. Gauge table 28. Secondary molding machine 29. The conveyance units 31 are arranged in series, and the discharge unit 9 and the upper base material delivery unit 10 are provided at positions where they can be stacked on the back surface of the lower base material A.

Next, the operation of the apparatus according to the present invention will be briefly explained together with the method for manufacturing a composite plate.

Currently, the lower base material A has a thickness of 0.27 mm + a width of 94 mm.
An uncoiler 2 was equipped with a color steel plate having a length of 1,000 meters and wound around a bobbin.

On the other hand, as the upper base material B, asbestos paper laminated with aluminum foil was wound 2000 rr to form a coil and prepared in an uncoiler.

Then, polyurethane resin (liquid temperature 20° C.) is supplied to the discharge part 9 as the mixed reactant P serving as the core material, and the upper and lower mold members 20.21 are rotated at a speed of 30 m/min, and the inside of the cover 26 is 50 m/min. Assume that it is kept at ℃.

Therefore, the starting end of the lower base material A is guided to the pinch roll 3,
Pass through the impact reduction machine 40F and lead out the molding machine 8VC.

Next, in the molding machine 8, the lower base material A is continuously molded into the cross section shown in FIG. 2, and sent to the next process.

In the discharge section 9, polyurethane raw materials were mixed and discharged onto the base material A.

Then, when it is discharged, it starts to foam and becomes a cloudy cream-like liquid, and when it starts to expand further, the upper base material B is stacked and supplied to the mold 15.

In this mold 15, the polyurethane resin is kept warm until the foam is completed, so-called cream time → gel time → rise time, and during this time it is molded into a predetermined shape that matches the mold.

Of course, at this time, the base materials A and B are fixed together by the self-adhesive properties of the polyurethane resin.

Then, it is sent out from the mold 1J. Since the composite body delivered from this mold 15 is a continuous body, the cutting machine 27. It is measured by the gauge table 28 and cut to a predetermined size.

What has been described above is only one embodiment of the composite plate manufacturing apparatus according to the present invention, and the apparatus may also be configured as shown in FIG. 4 atb.

That is, FIG. a shows the F-side based sending unit 1. Molding machine 8. Discharge part 9. Upper base material delivery part shell, detector 1λ, mold 15. The apparatus consisting of the cover 26, shown in FIG. b, is an apparatus in which a preheater is interposed between the molding machine 8 and the discharge section 9, as shown by the dashed line.

Further, although not shown, the lower base material A and the upper base material B may be made of the same material, or the discharge portion 9 may be made of pearlite grains, shirasu balloons, silica sand, borax, or a boric acid compound.

It is also possible to feed one or more types of fibrous materials to the mold 15 simultaneously with the core material or with a time difference.

As described above, according to the apparatus according to the present invention, the lower base material is fed and shaped as a continuous body, so damage and abrasion of the rolls are extremely less than in the case where it is fed as a cut plate.

(2) It is characterized by easily adapting to the state of the foamable reaction mixture, which is sensitive to temperature, by displacing the guide and changing the temperature, and producing composite plates in the best condition.

■Since the process from raw materials to products is produced consistently and linearly, it is characterized by being able to be manufactured at low cost, uniformly, and in large quantities.

■Since the inside of the mold is sealed, heat retention is improved, and leakage of harmful gases and combustion gases into the working environment is reduced, which greatly improves worker safety and hygiene.

Since the detector is present, there is no need to stop the equipment due to adhesion of foamable reaction mixture to the mold, etc., and there is an advantage that the equipment can be operated with peace of mind.

(2) Since the timing of contact between the L base material and the mixture can be easily and freely selected, there is an advantage that the upper base material can be reliably bonded and the strength of the sandwich board is greatly improved.

■The lower base material is constantly supplied to the molding machine under constant tension via an impact reduction machine, which has the feature of eliminating elongation, cutting, and molding errors of the lower base material.

■If the upper base material is cut during production, a signal from the detector will stop the operation of the discharge unit, molding machine, and lower base material delivery unit, preventing contamination of the mold and wasting the parts on the first side. It has the feature of preventing molding.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the composite board manufacturing apparatus according to the present invention, and FIGS. 2 and 3 show the structure of the lower base material when it is sent out from the molding machine 8° and the secondary molding machine 29. FIGS. 4a and 4b, which are explanatory diagrams showing a cross section, are configuration diagrams showing other embodiments of the device described above. DESCRIPTION OF SYMBOLS 1... Lower base material delivery part, 8... Molding machine, 9... Discharge part, 11... Guide, 1
2...Detector, 15...Type, 27...
... Cutting machine, 28 ... Gauge table, A
...F side base material, B... upper side base material.

Claims (1)

[Claims] 1. An uncoiler that attaches the lower base material, a pinch roller that sends the lower base material from the uncoiler to the next process, and a reduction in impact such as tension applied to the lower base material when it is led out from the pinch roller to the next process. a lower base material delivery section comprising an impact reducing machine for discharging the material; a discharge section for supplying a foaming reaction mixture having self-adhesive properties to the back surface of the lower base material; and an upper base material laminated on the discharged mixture. A material delivery section, a mold capable of continuously forming voids and continuously eliminating them after a certain period of time, and heating the upper base material delivery section to 50 to 90°C; A detector for confirming the presence or absence of a base material between the mold entrance; a guide for guiding the upper base material that is displaced in response to the dispersion and reaction state of the mixture; The method is equipped with a cover sealed to prevent gas from leaking in the space, a gauge table for measuring the continuous composite body delivered from the mold into a fixed length, and a cutting machine for cutting the composite body in accordance with the measurement. , the lower base material delivery section, a molding machine, a mold, a cutting machine, and a gauge table are arranged in series in this order, and a discharge section is interposed between the molding machine and the mold inlet to form a predetermined back surface of the lower base material. The foaming reactive mixture is laminated, and the detector detects the cutting of the upper base material and stops the operation of the discharge part and the lower base material delivery part, and at the same time, the lower part is removed between the lower base material delivery part and the molding machine. A composite plate manufacturing device characterized in that it is configured to send a signal for cutting a base material.