KR101970458B1 - Apparatus for making expanded polystyrene panel - Google Patents

Abstract

According to the present invention, an apparatus for manufacturing an expanded styrofoam panel includes: a foaming member for injecting a synthetic resin raw material in a particle state and heating and expanding the synthetic resin raw material with steam to obtain a foamed synthetic resin raw material; a drying member for drying the foamed synthetic resin raw material while applying vibration to the foamed synthetic resin raw material to obtain a dried raw material; an aging member for removing a gas component and a water component contained in the dried raw material; a forming machine for injecting the raw material and forming the raw material in a hexahedral shape in advance to obtain a formed hexahedral styrofoam; and a cutter for cutting the formed hexahedral styrofoam, wherein a stirring member for increasing a contact of the steam with the injected raw material is installed within the foaming member such that the stirring member allows the raw material injected into the foaming member to flow in an upward direction while rotating the raw material within the foaming member. According to the present invention, the apparatus can increase production yield by increasing mixing efficiency of EPS (expanded polystyrene) beads, thereby shortening time required for prefoaming. Further, the apparatus can increase flame retardant performance of a styrofoam panel finally formed through uniform mixing of the EPS beads and a flame retardant, and can lower defect rate by preventing unbalanced form and surface contraction of the expanded styrofoam panel that is formed.

Description

TECHNICAL FIELD [0001] The present invention relates to a foamed styrofoam panel manufacturing apparatus,

The present invention relates to a foamed styrofoam panel manufacturing apparatus, and more particularly, to a foamed styrofoam panel manufacturing apparatus that improves the production yield, improves the flame retardancy, prevents malfunctioning, Device.

Expanded polystyrene (EPS) is widely used throughout the industry due to its excellent heat insulating property, buffering property and processability, and is widely used as a packaging material for building products, a building insulation material or a sound absorbing material.

However, since foamed foam is very vulnerable to heat and fire, it acts as a diffusion medium of firepower during a fire to not only cause a cause of a large fire but also causes a toxic gas which is fatal to the human body in the process of burning, And also has considerable disadvantages.

Therefore, in recent years, efforts to impart a flame retarding function to foamed styrofoam have been actively pursued.

EPS board generally refers to a product formed by molding expanded polystyrene into a block shape and then cutting it into a certain thickness to form a board. The EPS board is produced by processing expanded polystyrene. Good and very light.

In addition, since EPISBOARD is manufactured by foaming EPSISBE, it has numerous micropores in its interior, which not only excelles in heat insulation but also effectively blocks noise from the outside, thereby being widely used as a building insulation material and a noise- .

However, EPISBOARD is vulnerable to fire and has a disadvantage that it easily burns when exposed to fire. Therefore, it has been regulated to be used only as a thermal insulation material of buildings only with flame retardant EPISBOARD.

Today, the method of producing a flame retardant epoxy board is based on impregnation method using an organic flame retardant and coating method using an inorganic flame retardant based on the method of treating the flame retardant and the flame retardant used .

The impregnation method using an organic flame retardant is a method of utilizing an organic material including an organic halogen element as a flame retardant used in an epoxy board.

This method, which was originally developed in pursuit of flame retardation of EPS boards, uses an inert organic halogen compound as a flame retardant, and by introducing the organic halogen compound together with a blowing agent in the polymerization process of the styrene monomer, A method in which a flame retardant is directly impregnated into the interior of the Sbead particle.

However, this method is rarely utilized today because a large amount of toxic gas is generated from the organohalogen compounds contained in the epoxy board in the case of fire.

Methods of using an inorganic flame retardant include a method of producing a flame retardant epoxy board by coating an inorganic flame retardant on the surface of an EPS board and a method of coating an inorganic flame retardant on the surface of each EPS bead , And thereafter refluxing the flame retardant-coated episubide to prepare a flame retardant epoxy board.

In any case, when the flame retardant epoxy board using the inorganic flame retardant is used as the thermal insulation material of the building, since the inorganic flame retardant forms the barrier film from the flame even when the fire occurs, And the inorganic flame retardant is decomposed or does not generate noxious gas, and thus it is most widely used today.

First, a method of coating an inorganic flame retardant on the surface of an epoxy board ("Board Coating Method") is a method in which an epoxy resin is preliminarily foamed and the epoxy resin is secondarily foamed inside the block mold to form an epoxy block , The above-mentioned epoxy block is cut to a predetermined thickness, converted to an epoxy board (flat board), and then coated with an inorganic flame retardant solution on one or both of the surfaces of the epoxy board (flat board) Lt; / RTI >

This method is advantageous in that an epoxy board is manufactured first and then it is divided into a flame retardant epoxy board or a conventional epoxy board depending on the use of the epoxy board.

That is, when a flame-retardant epoxy board is required, the resulting epoxy board can be coated with a solution of an inorganic flame retardant agent. If a conventional epoxy board is required, it is advantageous to ship the flame retardant agent without separately treating the inorganic flame retardant agent .

However, in the case of the flame retardant epoxy board, the flame retardant is coated only on the surface thereof, and the flame retardant is not present in the interior of the epoxy board, so that the disadvantage that the flame retardant performance is very low can not be avoided.

In order to overcome such disadvantages, a so-called sheath method is used to put a sheath in the middle part of the epoxy board, and a flame retardant solution is put therein.

On the other hand, a method of directly coating the inorganic flame retardant on the surface of the episubide (Bead Coating Method) is a method in which the flame retardant solution is directly coated on the spherical surface of the primary prefoamed episobe bead, It is a method of secondary foaming.

In this method, primary prefoamed cephem beads are respectively coated with a flame retardant agent, the pre-expanded particles of the flame-retardant epoxy resin are again foamed to form an epoxy block, and then the above-mentioned epoxy block is laminated to a predetermined thickness The flame retardant is contained not only on the surface of the epoxy board but also inside thereof.

Therefore, it is possible to expect a uniform distribution of the flame retardant throughout the entire epoxy board.

Thus, the flame retardant epoxy board manufactured in this manner has the advantage of being able to exhibit more efficient flame retardant performance than the flame retardant epoxy board manufactured by any other method.

Conventionally, the flame-retardant epoxy board is manufactured by putting a solution of flame-retardant and episode beads in a predetermined container, mixing them for a predetermined time while heating them using steam or the like, and drying the mixture.

However, in the process of preliminarily foaming the episubide mixed with the episubide or the flame retardant by using steam, the more frequent the friction due to the mixing of the beads, the shorter the time required for the prefoaming, .

Also, in the preliminary foaming process, the flame retardant applied to the surface of the bead becomes more uniformly distributed by the uniform and frequent mixing of the beads, and the flame retardant performance of the finally formed styrofoam board can be further enhanced.

An object of the present invention is to provide a foamed styrofoam panel manufacturing apparatus capable of shortening the time required for prefoaming by increasing the foaming efficiency according to the friction of the EPS beads, thereby increasing the production yield.

Another object of the present invention is to provide an apparatus for manufacturing a foamed styrofoam panel configured to increase the flame retardancy of a styrofoam panel finally formed through more uniform mixing of episubides and a flame retardant.

It is still another object of the present invention to provide a foamed styrofoam panel manufacturing apparatus configured to prevent shape unbalance and surface contraction of a foamed styrofoam panel to be formed.

It is still another object of the present invention to provide a foamed styrofoam panel manufacturing apparatus configured to prevent the discharge of noxious gas to a work site.

In order to accomplish the above object, the present invention provides a foamed foam forming apparatus comprising: a foam member for injecting a synthetic resin raw material in a granular state to heat and expand the foamed synthetic resin material by steam; a drying member for drying the foamed synthetic resin material, An aging member for removing a gas component and a moisture component contained in the dried raw material, a molding machine for forming the hexahedron by injecting the raw material, and a cutter for cutting the molded hexahedral styrofoam, A stirring member for increasing the contact between the charged raw material and the steam is provided in the foaming member so that the raw material injected into the foaming member by the stirring member flows upward while being rotated inside the foaming member.

Preferably, a plurality of blades of the stirring member are provided along the height direction inside the foam member.

Here, a blade having a larger outer diameter may be installed at a higher position inside the foam member.

Or a blade having a smallest outer diameter is provided in the central portion of the plurality of blades in the foam member and a blade having a larger outer diameter is provided from the central portion toward the higher position, A blade having a large outer diameter can be installed.

In the meantime, the inside of the drying member is provided with a support for supporting the raw material and an elastic support member for elastically supporting the support, and an elastic adjustment member for adjusting the elasticity of the elastic support member is provided outside the drying member Can be installed.

Here, the height of the support portion may be changed by adjusting the elasticity adjusting member, so that the elasticity of the elasticity supporting member can be adjusted.

The drying member may be provided with a sound absorbing member formed of a foamable synthetic resin material.

The first and second diameters may be different from each other. In the sound-absorbing member, an opening of the first diameter and an opening of the second diameter may be formed, Openings of a diameter can be alternately formed.

The aging member includes a tank member for storing a raw material, and the tank member is provided with a gas discharge port for discharging a gas component, and the gas discharge port may be provided with a gas combustion member.

Here, the gas combustion member may include a heating wire configured to burn gas components by power supply.

The molding machine includes a molding machine body having a hexahedral shape and a raw material input portion disposed on the upper portion of the molding machine main body, and an antistatic member may be installed in the raw material input portion.

In this case, a gas discharge port for discharging a gas component is formed in the raw material input portion, and a gas combustion member may be installed in the gas discharge port.

Preferably, the gas combustion member may include a heating wire configured to burn gas components by power supply.

The main body of the molding machine is divided into two main body housings. The main body housings are configured to be movable in a direction to be mutually engaged or disengaged, and a molding length adjuster is movably installed in the main body of the molding machine.

The inner surface of the molding machine body is provided with a flow promoting recess for smoothly flowing the molding material.

Here, the flow promoting recesses are formed in the height direction on the inner wall of the molding machine body, and the steam induction grooves are formed at predetermined intervals in the flow promoting recesses.

Meanwhile, the cutter includes a heating wire movably installed, and the heating wire may be formed by twisting a unit heating wire of a circular cross section in a spiral direction.

Preferably, the vapor introducing portion in the foam member is disposed at a higher position than the stirring member, and is configured to flow the raw material upward toward the vapor introducing portion by the stirring member.

Here, the blade end portion of the agitating member is formed to be bent upward, and a cut portion may be formed at the end portion.

The blades of the agitating member may have openings therethrough.

According to the present invention, it is possible to shorten the time required for the prefoaming by increasing the foaming efficiency by friction with the vapors of vaporized beads, thereby increasing the production yield.

In addition, it is possible to improve the flame retardancy of the finally formed styrofoam panel through more uniform mixing of the episubides and the flame retardant.

In addition, it is possible to prevent the shape unevenness and the surface contraction of the foamed styrofoam panel to be formed, thereby reducing the defective rate.

In addition, it is possible to prevent the discharge of harmful gas to the work site.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
1 is a configuration diagram of a foamed styrofoam panel manufacturing apparatus according to the present invention,
2 is a configuration diagram of a foam member,
3 is a configuration diagram of another embodiment of the above-described foam member,
4 is a configuration diagram of the drying member,
5 is a schematic view of the aging member,
6 is a plan view of the molding machine,
7 is a side view of the molding machine,
8 is a side view of the molding machine with the main housing opened;
9 is a side view of the molding machine in a state where the main housing is closed;
10 is an internal perspective view of the molding machine,
11 is a front view of the inner surface of the molding machine,
12 is a configuration diagram of the cutter,
13 is a perspective view of the heating wire.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

Fig. 1 is a configuration diagram of a foamed styrofoam panel manufacturing apparatus according to the present invention, Fig. 2 is a configuration diagram of a foam member, Fig. 3 is a configuration diagram of another embodiment of the foam member, Fig. 7 is a side view of the molding machine, Fig. 8 is a side view of the molding machine with the main housing opened, Fig. 9 is a side view of the molding machine, 11 is a front view of the inner surface of the molding machine, Fig. 12 is a structural view of the cutter, and Fig. 13 is a perspective view of the heating wire.

1 to 3, the foamed styrofoam forming apparatus according to the present invention comprises a foam member 10 for heating and expanding a synthetic resin material raw material in a granular state by steam and a foamed synthetic resin material raw material, , A maturing member (50) for removing gas components and moisture components contained in the dried raw material, a molding machine (70) for molding the raw material into a hexahedral shape, And a cutter (90) for cutting the foamed styrofoam. The foam member (10) is provided therein with a stirring member (18) for increasing the contact between the charged raw material and the steam, So that the raw material injected into the foam member 10 flows upward while being rotated inside the foam member 10.

The flame-retardant foamed styrofoam panel is prepared by mixing a flame retardant such as silicic acid or sodium chloride with beads as a raw material of styrofoam and stirring the resulting beads with the flame retardant attached thereto into the foam member 10 and bubbling the mixture with heating at about 90 to 110 ° C .

The term " bubbling " refers to expanding the bead with the flame retardant by applying heat. In this process, the flame retardant is uniformly distributed on the surface of the bead by friction between the beads.

The beads refer to particles formed from polystyrene as a raw material in the form of beads having a diameter of 1 to several mm, and are expanded into beads having a larger diameter by heating and foaming the beads.

The foam member 10 is provided with a charging unit 14 for charging the bead raw material and a steam charging unit 16 for charging the steam so that hot steam in a heated state is introduced through the steam charging unit 16 The temperature of the bead is raised through the contact between the introduced steam and the bead raw material, and the foam is foamed.

It is preferable that the contact between the vapor and the bead is more actively performed in order to enhance the working efficiency of preliminarily foaming the bead by the steam supply and uniformly distribute the flame retardant applied on the surface of the bead to the surface of the bulged bead during the foaming process Do.

The steam input part 16 is installed at a position higher than the stirring member 18 rather than near the bottom of the foam member 10 so that the steam supplied to the steam input part 16 is as hot as possible It is advantageous to raise the temperature of the bead.

In general, the vapor injecting portion of the foam member is disposed at a higher position than the agitating member. In the conventional foam member 10, only the operation of rotating the bead (raw material) is performed through the blades. The bead is heated in such a manner that it is contacted with the steam supplied to the steam inlet portion 16 while being rotated at a substantially similar height of a certain range. In this process, the degree of contact between the bead and the steam to be.

 However, in the present invention, the raw material (bead) injected into the foam member 10 by the agitating member 18 flows upward while being rotated inside the foam member 10.

Thus, while the bead is heated by contact with the steam while being rotated by the blade 181 of the stirring member 18, the bead is moved upward to the position where the steam inlet portion 16 is installed and is in contact with the steam, So that the contact time with the bead can be increased while the steam supplied to the steam inlet 16 drops.

In addition, the irregular turbulent flow is increased as compared with the case of rotating the beads circularly, so that the collision between the beads as well as the steam becomes more frequent during the unit time.

Therefore, it is possible to increase the efficiency of heating the beads through the supplied steam and to make the flame retardant distributed on the bead surface distributed more evenly on the surface of the expanded beads in the foaming process.

Thus, by making the flame retardant agent more uniformly distributed in the finally formed styrofoam panel, it is possible to form a panel having more uniform and good flame retardancy characteristics.

2 and 3, the blade 181 of the agitating member 18 is moved in the direction of the stirring member shaft 185 (see FIG. 2) inside the foam member 10, ) Are provided along the height direction.

As shown in FIG. 2, a blade having a larger outer diameter may be installed at a higher position in the foam member 10 among the plurality of installed blades 181.

Thus, by the stirring member 18 installed as described above, a pressure gradient is generated along the height direction by the same principle as the diffuser, and a strong pressure flow is formed upward so that the beads are rotated upward while being rotated .

Thus, the beads and the vapor can be mixed more smoothly and promptly.

3, a blade having the smallest outer diameter is provided at a central portion hc of the plurality of blades 181 inside the foam member 10, and a blade having a larger diameter A blade having an outer diameter may be provided and a blade having a larger outer diameter may be provided gradually toward the lower position from the center portion.

Thus, the agitating member 18 is installed so that the nozzle and the diffuser are combined in the vertical direction, so that the beads are smoothly moved in the vertical direction while rotating the beads in the circumferential direction by a pressure gradient along the height direction, And the friction between the beads can be increased.

The blades 181 may be formed of a metal material, and a coating layer may be formed on the surface thereof with a soft (elastic) synthetic resin such as silicon or urethane.

Alternatively, the blade 181 itself may be made of synthetic resin, and the circumferential end of the blade may be bent upward.

In addition, cuts 184 are formed in the end portion 182 of the blade 181 formed by bending to further increase the contact area between the end portion of the blade and the bead, thereby increasing the mixing efficiency and the fluidity due to vortex formation .

Also, to increase this effect, the blades may be provided with openings 186 therethrough.

With the stirring member 18 of the present invention as described above, while the beads are rotated inside the foam member 10, the foam member 10 is floated upwards and is moved to the side of the foam member 10 to be dropped downward. The beads can be rubbed against each other.

The drying member (30) is configured to dry the beads while being foamed from the foam member (10) by applying vibration to the foam member (10).

A supporting part 32 for supporting the raw material and an elastic supporting member 36 for elastically supporting the supporting part 32 are installed in the inside of the drying member 30, And an elasticity adjusting member 38 for adjusting the elasticity of the elastic supporting member 36 is provided.

The elastic support member 36 is composed of various kinds of springs such as a coil spring or a leaf spring, and the support portion 32 is supported by the elastic support member 36.

The spring constant (elasticity) of the elastic supporting member 36 is adjusted by adjusting the degree of compression or deformation of the elastic supporting member 36 by rotating the elastic adjusting member 38.

A vibrating motor 34 for applying vibration is coupled to the support portion 32 or the elasticity adjusting member 38 so that the vibrating motor 34 applies vibration to the supporting portion 32.

Thus, by adjusting the elasticity of the elastic supporting member 36, the supporting height of the supporting portion 32 can be adjusted, whereby the amount of the bead accommodated in the drying member 30 can be adjusted, The characteristics of the applied vibration can be changed.

Thus, vibration applied depending on the size of the beads or the physical properties of the raw material constituting the beads, or the total amount of the beads received in the drying member 30 can be adjusted.

The drying member 30 generates a large noise by the operation of the vibrating motor 34, the supporting portion 32 and the elastic supporting member 36. In order to prevent a noise from being generated in the workplace, ) May be provided with a sound absorbing member 40 formed of a foamable synthetic resin material.

The sound absorbing member 40 is formed by stacking a first sound absorbing member 44 having an opening of a first diameter D1 and a second sound absorbing member 42 having an opening D2 of a second diameter, The first diameter and the second diameter are formed differently, and the opening of the first diameter and the opening of the second diameter may be alternately formed inside the sound absorbing member (40).

The first sound absorbing member 44 and the second sound absorbing member 42 for forming the sound absorbing member 40 are formed of a porous synthetic resin material such as foamed polyurethane.

The first diameter D1 and the second diameter D2 are formed to be different from each other and the noise generated inside the drying member 30 is transmitted to the sound absorbing member 40 through the same principle as a muffler The destructive interference of the sound waves is generated and the noise can be reduced.

Thus, the noise generated inside the drying member 30 can be remarkably reduced.

The aging member 50 includes a tank member 52 for storing the bead raw material and a gas (not shown) for storing the bead raw material in the tank member 52. The aging member 50 may be configured to remove volatile components and moisture remaining in the dried bead raw material, And a gas exhaust port 54 for exhausting the component. The gas exhaust port 54 may be provided with a gas combustion member 56.

The gas discharge port 54 may be provided with a flow fan 58 for guiding volatile components and moisture generated in the tank member 52 toward the gas discharge port 54.

The gas combustion member 56 is configured to include a heating wire configured to burn a gas component by power supply or to burn a volatile gas gas inside the tank member 52 by burning the combustible gas lightly.

Thus, by burning the gas remaining in the bead material inside the tank member 52 through the gas combustion member 56, it is possible to prevent the volatile gases from being discharged into the workplace.

When a separate intake pipe is connected to the gas discharge port 54 and the volatile gas is sucked and discharged, there is a risk of a safety accident due to the arrangement of the pipe inside the workplace while the additional equipment configuration becomes complicated.

As described above, by providing the gas combustion member 56 in the gas discharge port 54 to burn the volatile gas components, the amount of the volatile gas discharged to the workplace can be significantly reduced even by a simple construction.

The molding machine 70 includes a molding machine main body 72 having a hexahedral shape and a raw material input portion 80 disposed at the upper portion of the molding machine main body 72, ).

The raw material input portion 80 is formed in the form of a tank for inputting the bead raw material, and the raw material input portion 80 is provided with an antistatic member 82 formed in the form of a net using a conductor such as a metal material, Respectively.

A ground portion 822 for grounding the static electricity is connected to the static electricity prevention member 82 to remove static electricity generated by the bead material introduced into the material supply portion 80.

When the static electricity is generated in the bead raw material introduced into the raw material input portion 80, the beads in the static electricity generating region are clumped, which causes the bead raw material flow to the molding machine 70 to be interrupted.

In addition, when aggregation occurs in the bead raw materials, in forming the hexahedral styrofoam block through foaming in the molding machine 70, non-uniform distribution of the raw materials may cause unevenness of strength and pore formation.

Therefore, the bead materials injected into the raw material input portion 80 are brought into contact with the antistatic member 82 formed in the form of a net using a conductor, and the antistatic member 82 is grounded, So that static electricity is prevented from being generated.

A gas discharge port 84 for discharging a gas component is formed in the raw material input portion 80 and a gas combustion member 86 may be installed in the gas discharge port 84.

The gas combustion member 86 is also configured to include a heating wire configured to burn a gas component by electric power supply, or to be burned by a combustible gas supply to burn a gas component.

Thus, by removing the volatile component gas remaining in the bead raw material introduced into the raw material input portion 80, pores are prevented from being formed in the styrofoam block formed by the molding machine 70, whereby the styrofoam block is cut It is possible to form a styrofoam panel having more uniform strength characteristics with respect to the formed styrofoam panel.

In addition, the amount of volatile gas discharged to the workplace where the molding machine 70 is installed can be significantly reduced.

6 to 9, the molding machine body 72 is divided into two main body housings 702 and 704, and the two main body housings 702 and 704 are connected to each other in a direction And is configured to be movable.

9, the two main body housings 701 and 702 are configured such that one main body housing 702 is moved by the cylinder axis 707 in a state where the main body 72 of the molding machine is divided into two main body housings, Thereby forming a hexahedral space or separating and releasing as shown in FIG. 8, thereby forming a hexahedral styrofoam block, and discharging the formed styrofoam block from the molding machine body 72.

That is, as shown in FIG. 9, when the two main body housings 702 and 704 are coupled to each other, the bead raw material is injected into the main body housing, and the bead raw material is melt- Of styrofoam blocks.

8, the styrofoam blocks are discharged and transferred to the cutter 90 in a state where the two first main housing 702 and the second main housing 704 are separated from each other.

As an example of the structure for coupling or separating the two main body housings 702 and 704, a cylinder shaft 707 coupled to the main body housing 702 may be used.

Thus, by actuating the cylinder axis 707, the first body housing 702 coupled thereto can be moved toward or away from the second body housing 704 side.

In addition, a molding length adjuster 710 is movably installed inside the molding machine body 72 in the molding machine main body.

The shaping length adjuster 710 is formed of a rectangular plate and is formed to have the same shape as the internal cross-sectional shape of the molding machine body 72, so that the internal space of the molding machine body 72 can be closed.

The shaping length adjuster 710 is coupled to the feed shaft 712 and moves the feed shaft 712 in the left and right directions in FIGS. 6 and 7, And is moved in the left-right direction from the inside.

The length of the styrofoam block finally formed can be adjusted by moving the shaping length adjuster 710 in the lateral direction.

Thus, it is possible to produce styrofoam blocks of various sizes by using one molding machine 70.

10 and 11, on the inner surface of the molding machine body 72, a flow promoting recess 732 for smoothly flowing the molding material is formed.

The flow promoting recesses 732 are formed in the height direction in the inner wall of the molding machine body 72, and the steam induction grooves 734 are formed at predetermined intervals in the flow promoting recesses.

The flow promoting recess 732 is formed to have a width of 0.2 to 0.5 mm which is significantly smaller than the diameter of the bead.

Conventionally, when the bead raw material is foamed while steam is supplied into the molding machine body 72, the bead raw material is not easily formed into a hexahedral block shape by expanding the volume smoothly due to entanglement or aggregation of the bead raw materials.

This is also due to electrostatic clumping, but is also due to the fact that the expansion of the bead materials in the direction of counteracting gravity does not expand more smoothly than the expansion in the horizontal direction.

Therefore, by forming the flow promoting recess 732 in the height direction in the inner wall of the molding machine main body 72 as described above, the contact area between the bead raw material and the inner wall is reduced to some extent so that the force, Can be somewhat mitigated.

Thus, both the horizontal expansion expansion and the vertical expansion expansion of the bead raw material can be smoothly performed, so that the form imbalance due to the local shrinkage can be prevented.

The thus formed hexahedral styrofoam block is transferred to the cutter 90 through the conveying roller 742.

The cutter 90 is configured to cut a hexahedral styrofoam block to a predetermined width to form a hexahedral styrofoam panel. The cutter 90 includes a heating wire 94 that is movably installed.

The heating wire 94 is moved to move the heating wire 94 in a state where the heating wire 94 is installed on a rail 92 mounted on the top and bottom faces.

Then, electricity is supplied to the heating wire and heated to a hot temperature, so that the heating wire 94 contacts the styrofoam block to melt the styrofoam locally.

Since the heating wire 94 is moved in contact with the styrofoam block, a frictional force is applied between the heating wire 94 and the contact surface of the styrofoam block. The frictional force is such that the cutting surface by the heating wire 94 is not smooth .

Therefore, by forming the heating wire 94 by twisting the unit heating wires 942 having the circular cross section in the spiral direction, it is possible to finely reduce the contact area at each moment as compared with the case of contacting the single circular heating wire 94 have.

That is, locally minute recesses 944 are formed at the portion where the unit heating wires 942 meet, and the minute recesses 944 do not contact the surface of the styrofoam block, This is because the contact area between the heating wire 942 and the styrofoam block is reduced.

This is similar to the principle of reducing friction with air by forming dimples (recesses) in a golf ball.

While the present invention has been described with reference to the exemplary embodiments and the drawings, it is to be understood that the technical scope of the present invention is not limited to these embodiments and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations may be made without departing from the scope of the appended claims.

10: foaming member
30: Drying member
50: Aging member
70: Molding machine
90: Cutter

Claims (20)

A foam member for heating and expanding the synthetic resin raw material in the form of particles by steam;
A drying member for drying the foamed synthetic resin material while vibrating;
An aging member for removing a gas component and a moisture component contained in the dried raw material;
A molding machine for filling the raw material into a hexahedron shape;
And a cutter for cutting the molded foamed styrofoam,
A stirring member for increasing the contact between the charged raw material and the steam is provided in the foam member,
Wherein the raw material injected into the foam member by the agitating member flows upward while being rotated inside the foam member,
A support for supporting the raw material inside the drying member;
An elastic support member for elastically supporting the support portion is provided,
Wherein an elastic adjusting member for adjusting the elasticity of the elastic supporting member is provided outside the drying member. The method according to claim 1,
Wherein a plurality of blades in the stirring member are installed along the height direction inside the foam member. 3. The method of claim 2,
And a blade having a larger outer diameter is installed at a higher position inside the foam member. 3. The method of claim 2,
Wherein a blade having a smallest outer diameter is provided in a central portion of a plurality of blades in the foam member,
A blade having a larger outer diameter is provided from the center to a higher position,
And a blade having a larger outer diameter is installed gradually toward the lower position from the center portion. The method according to claim 1,
Wherein the height of the support portion is changed by adjusting the elasticity adjusting member, thereby adjusting the elasticity of the elasticity supporting member. The method according to claim 1,
Wherein the drying member is provided with a sound absorbing member formed of a foamed synthetic resin material. The method according to claim 6,
Wherein an opening of a first diameter and an opening of a second diameter are formed inside the sound absorbing member,
The first diameter and the second diameter are formed differently,
Wherein the opening of the first diameter and the opening of the second diameter are alternately formed inside the sound absorbing member. The method according to claim 1,
Wherein the aging member includes a tank member for storing a raw material, and a gas discharge port for discharging a gas component is formed in the tank member, and a gas combustion member is installed in the gas discharge port. . 9. The method of claim 8,
Wherein the gas combustion member includes an electric heating line configured to burn gas components by electric power supply. The method according to claim 1,
The molding machine comprises a hexahedral molding machine main body;
And a raw material input portion disposed above the main body of the molding machine,
Wherein an antistatic member is provided on the raw material input portion. 11. The method of claim 10,
Wherein a gas discharge port for discharging a gas component is formed in the raw material input portion, and a gas combustion member is installed in the gas discharge port. 12. The method of claim 11,
Wherein the gas combustion member includes an electric heating line configured to burn gas components by electric power supply. 11. The method of claim 10,
Wherein the molding machine body is divided into two main body housings, the two main body housings being configured to be movable in a direction to be mutually engaged or disengaged,
Wherein the molding length adjuster is movably installed in the molding machine body. 11. The method of claim 10,
Wherein an inner surface of the molding machine body is provided with a flow promoting recess for smoothly flowing the molding material. 15. The method of claim 14,
Wherein the flow promoting concave portion is formed in a height direction in an inner wall of the molding machine body, and a vapor induction groove is formed at predetermined intervals in the flow promoting concave portion. The method according to claim 1,
Wherein the cutter includes a heating wire movably installed,
Wherein the heating wire is formed by twisting a unit heating wire of a circular cross section in a spiral direction. The method according to claim 1,
Wherein the vapor injecting portion in the foam member is disposed at a higher position than the agitating member and is configured to flow the raw material upward toward the vapor introducing portion by the agitating member. The method according to claim 1,
Wherein the blade end portion of the stirring member is formed to be bent upward and a cut portion is formed at the end portion. The method according to claim 1,
Wherein the blades of the agitating member are formed with openings therethrough. delete

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