KR20020075949A - Apparatus for manufacturing polyolefine matter into form - Google Patents

Abstract

PURPOSE: An apparatus for manufacturing a bubble molding material of polylefine resin is provided to reduce a manufacturing cost and improve a luminous intensity of the surface by making the bubble molding material uniform. CONSTITUTION: An apparatus for manufacturing a bubble molding material of polylefine resin includes an extruder(10) for extruding melt polylefine resin. A T-die molder(20) makes a bubble molding material, which transferred from the extruder(10). A calibrator(100) cools the bubble molding material transferred from the T-die molder(20) at the state of maintaining a thick of the bubble molding material uniformly. A supplementary calibrator(200) again cools the bubble molding material from the calibrator(100). An air cooler(400) finally cools the bubble molding material transferred by a conveyer(300). A pinch roller(500) supports the bubble molding material finally cooled by the air cooler(400) when the finally cooled material is transferred.

Description

Apparatus for producing expanded molded article of polyolefin-based resin {APPARATUS FOR MANUFACTURING POLYOLEFINE MATTER INTO FORM}

The present invention relates to an apparatus for producing a foamed molded article of polyolefin resin, and more particularly, even when a foamed molded article having a required thickness is manufactured, the foamed molded product is not only prevented from being deformed by heat, but the foaming of the foamed molding is uniform and the surface roughness is also provided. The present invention relates to an apparatus for producing expanded molded articles of polyolefin-based resin which is improved.

Foamed moldings used throughout the industry has the performance of thermal insulation, soundproofing, vibration damping, etc., the use is rapidly spreading. Such foamed moldings include rigid polystyrene foamed moldings, soft polyurethane foamed moldings, and polyolefin resins, which are polyolefin resins composed of mostly semi-rigid and closed-cell structures at an intermediate level thereof. ), Polypropylene and the like.

Among these, polyolefin resin foam moldings are widely used for various packaging materials, such as building materials, automobile interior materials, electrical and electronic component materials, and daily necessities. In particular, as various industrial products have been miniaturized and refined in recent years, in order to use them as packaging materials, it is necessary to secure foam moldings having sizes and thicknesses that can be used in various forms.

1 is a schematic view showing a foam molding apparatus using a polyolefin resin according to the prior art. As illustrated, the extruder 10 receives the polyolefin resin composition and melts and extrudes the polyolefin resin, and the T-Die mold 20 foaming the foamed material of the polyolefin resin mixed and transported from the extruder 10. And a plurality of support rollers 30 for supporting the foamed molded product discharged from the T-Die mold 20 and a bobbin 40 for winding the molded foam supported and moved by the support roller 30.

The polyolefin-based resin composition supplied to the extruder 10 is melted of the resin and decomposed of the blowing agent under high temperature and high pressure inside the compression cylinder (not shown) of the extruder 10 so that the decomposition gas is present in a solution state. 20) injected into.

The extruder 10 is provided with a compression cylinder (not shown) and a motor (not shown) that supplies power to pressurize the compression cylinder therein, and a gearbox (not shown) that transmits power from the motor. It is.

2 is a cross-sectional view of a T-Die mold used in the foam molding apparatus using the polyolefin resin of FIG. As shown, the T-Die mold 20 includes a manifold 21 for spreading the polyolefin resin extruded from the extruder 10 by a predetermined width, and a polyolefin resin widely spread by the manifold 21. When the pressure is extruded, the choke bar 22 for adjusting the pressure, the nozzle 23 through which the polyolefin resin whose pressure is controlled by the choke bar 22 passes, and the polyolefin resin passed through the nozzle 23 Is composed of a die body 24 for adjusting the discharge amount.

The choke bar 22 controls the pressure during extrusion of the polyolefin resin by adjusting its height by the choke bar adjuster 22a, and the die body 24 is used to control the polyolefin resin by the die body controller 24a. Adjust the discharge amount.

The support roller 30 is located on the lower surface of the foam molding so that the circular bar 31 supporting the foam molding is rotatably coupled to the support 32.

The reel 40 has a roll 41 wound around the foam molded part rotatably coupled to the support 42, and one side of the roll 41 is connected to a belt by a motor not shown.

Operation of the foam molding apparatus using a conventional polyolefin resin having such a structure is made as follows.

The polyolefin resin transferred from the extruder 10 to the T-Die mold 20 is spread as wide as the width of the product by the manifold 21, and the polyolefin resin thus spread is lowered by the choke bar adjuster 22a. The pressure of the polyolefin-based resin is controlled by the choke bar 22 that is controlled to pass through the nozzle 23 in a stabilized state, and the polyolefin-based resin having passed through the nozzle 23 is controlled by the die-body controller 24a. By adjusting the clearance amount of the die main body 24, the discharge amount is adjusted and discharged.

The discharged flat foamed product is moved by the roll 41 of the bobbin 40 which is rotated by the earth output of the T-Die mold 20 and the motor, and the flat foamed molded product is supported by a plurality of support rollers. It is supported by 30 and wound up by the roll 41 of the bobbin 40, and it is completed by a product.

In the foaming process, when the foaming gas (butane) is mixed with the resin and heated and extruded, the compressed gas is pressurized in the T-Die mold 20, and the compressed gas comes out of the T-Die mold 20 to decompress and foam. If the thickness is thick, after foaming, the surface cools and hardens, but the gas which does not come out inside causes a flow and causes post deformation.

Therefore, the foam molding apparatus using the conventional polyolefin resin in the nature of the foaming process can not produce a foamed molded article of sufficient thickness to obtain the required performance, it was possible only a thin low-foam molding having a thickness of 2mm or less. Therefore, the foamed molded article formed into a thin plate has a problem in that the process is complicated and the manufacturing cost is increased by using a multi-layered joint so as to have a desired thickness.

In addition, when molding into a flat plate using a T-Die mold according to the prior art has a problem that the entire product is warped due to the cooling rate and gradient, it is difficult to continuously produce a large flat plate.

The present invention is to solve the above-mentioned conventional problems, an object of the present invention is to prevent the foamed product from being deformed by heat even when producing a foamed molding having the required thickness as well as uniform foaming and surface roughness of the foamed molding It is an object of the present invention to provide an apparatus for producing a foamed molded article of polyolefin resin which is improved and low in manufacturing cost.

In order to achieve the above object, the present invention provides a foam molding apparatus having a T-Die mold for foaming a foamed material of a polyolefin resin mixed and conveyed from an extruder, wherein a foamed product foamed from a T-Die mold passes. Upper and lower plates installed at regular intervals up and down to provide a passage, close means for closely contacting upper and lower surfaces of the foamed molding to the upper and lower plates, and cooling water for cooling the foamed molding passing through the upper and lower plates. A calibrator having a stage and a plate support for supporting the upper and lower plates; Upper and lower pin belts and upper and lower pin belts each having a plurality of transfer pins installed on the outer surface to provide a transfer force to the foamed product passing through the calibrator, and to be provided at regular intervals up and down to pass the molded product. And a conveyor having a belt support for supporting the belt, and a driving means for driving the upper and lower pin belts.

The contact means of the calibrator includes: a plurality of upper and lower vacuum tubes each formed perpendicularly to the upper and lower plates of the calibrator, one end of which is in contact with the upper and lower surfaces of the foamed molding; Upper and lower air suction holes connected to the other ends of the upper and lower vacuum tubes, respectively; Characterized in that it consists of a vacuum pump for sucking air from the upper and lower air intake.

The cooling means of the calibrator includes: upper and lower cooling water circulation paths each formed in a zigzag horizontally on the upper and lower plates and providing a passage through which the cooling water is circulated; A cooler installed at an inlet side of the upper and lower cooling water circulation paths and cooling the cooling water circulated through the upper and lower cooling water circulation paths; It is characterized by consisting of a circulation pump for circulating the cooling water by supplying the cooling water cooled from the cooler to the upper and lower cooling water circulation.

1 is a schematic view showing a foam molding apparatus using a polyolefin resin according to the prior art,

2 is a cross-sectional view of a T-Die mold used in the foam molding apparatus using the polyolefin resin of FIG.

Figure 3 is a side cross-sectional view showing a foam molded article manufacturing apparatus of a polyolefin resin according to the present invention,

Figure 4 is a side cross-sectional view of the calibrator of the polyolefin resin foam molded article manufacturing apparatus according to the present invention,

5 is an enlarged cross-sectional view of part A of the calibrator shown in FIG. 4;

6 is a cross-sectional view taken along line B-B 'of the calibrator shown in FIG. 4;

7 is a front view of the auxiliary calibrator of the polyolefin resin foam molded article manufacturing apparatus according to the present invention,

Figure 8 is a side cross-sectional view of the auxiliary calibrator of the polyolefin resin foam molded article manufacturing apparatus according to the present invention,

9 is a front view of a feeder of the apparatus for producing expanded molded article of polyolefin resin according to the present invention;

10 is a side cross-sectional view of a feeder of the apparatus for producing expanded molded article of polyolefin resin according to the present invention;

11 is a front view of an air cooler of the foam molded article manufacturing apparatus of the polyolefin resin according to the present invention,

12 is a side cross-sectional view of an air cooler of the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10; Extruder 20; T-Die Mold

100; Calibrator 110; Upper plate

120; Lower plate 130; Contact means

140; Cooling means 150; Plate support

200; Subcalibrator 210; Upper plate

220; Lower plate 230; Cooling means

240; Plate support 300; Conveyor

310; Upper pin belt 320; Lower pin belt

340; Belt support 350; Driving means

400; Air cooler 410; Upper housing

420; Lower housing 500; Pinch Roller

510; Frame 520; Upper roller

530; Lower roller 540; motor

550; Support member

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

The same parts as in FIGS. 1 and 2 will be denoted by the same reference numerals and description thereof will be omitted.

Figure 3 is a side cross-sectional view showing a foam molded article manufacturing apparatus of a polyolefin resin according to the present invention. As shown, the polyolefin resin foam molding apparatus according to the present invention is supplied with a polyolefin resin composition extruder 10 for melting and extruding polyolefin resin, and polyolefin resin mixed and conveyed from the extruder 10 The T-Die mold 20 for foaming the foamed material of the foam, the calibrator 100 for cooling the foamed molded product foamed from the T-Die mold 20 while maintaining the thickness uniformly, and the calibrator 100 Auxiliary calibrator 200 for cooling the foamed product passed again, the feeder 300 for providing a conveying force to the foamed molding, and finally the remaining heat in the foamed product conveyed through the feeder 300 An air cooler (400) and a pinch roller (500) for supporting and transporting the foamed product finally cooled by the air cooler (400).

Since the extruder 10 and the T-Die mold 20 have already been mentioned in the related art, the description thereof will be omitted.

Figure 4 is a side cross-sectional view of the calibrator of the apparatus for producing expanded molded article of polyolefin resin according to the present invention. As shown, the calibrator 100 is composed of upper and lower plates (110, 120), the contact means 130, the cooling means 140 (shown in Figure 6), and the plate support 150.

The upper and lower plates 110 and 120 are installed at regular intervals up and down so as to provide a passage through which the foamed molding foamed from the T-Die mold 20 passes, and the upper and lower plates 110 and 120 are provided on the upper and lower plates. The contact means 130 for contacting the upper and lower surfaces of the foam molding and the cooling means 140 for cooling the foam molding passing through the upper and lower plates 110 and 120 are installed on the upper and lower plates 110 and 120. Is supported by the plate support 150.

The contact means 130 has a plurality of upper and lower vacuum tubes (131, 132) are formed perpendicular to the upper and lower plates (110, 120), respectively, the upper and lower vacuum tubes (131, 132) one end of the upper and lower foamed moldings In contact with each other, the other end is connected to the upper and lower air intake 133,134, respectively.

The upper and lower air suction holes 133 and 134 are formed on the upper and lower surfaces of the upper and lower plates 110 and 120, respectively, and the upper and lower air suction holes 133 and 134 are sucked through the upper and lower supply suction holes 133 and 134 from the upper and lower vacuum tubes 131 and 132, respectively. The vacuum pump 135 is connected to the ends of the lower air suction ports 133 and 134.

On the other hand, the upper vacuum tube 131, as shown in Figure 5, forms an orifice (orifice 137) on one end in contact with the upper surface of the foamed molding. In addition, the lower vacuum tube 132, like the upper vacuum tube 131, forms an orifice at one end in contact with the lower surface of the foamed molding. Therefore, the orifices formed on the upper and lower vacuum tubes 131 and 132 respectively increase the suction force on the upper and lower surfaces of the foamed molding to increase the strength of the upper and lower surfaces of the foamed molding, respectively, on the upper and lower plates 110 and 120. .

In addition, the upper and lower air intakes 133 and 134 may be provided in plural according to the width of the foamed molded product, and the valves 136 are provided at the ends of the upper and lower air intakes 133 and 134 to operate the valve 136. By controlling the vacuum in the upper and lower vacuum tubes (131, 132) it is possible to control the strength of the foam molding is in close contact with the upper and lower plates (110, 120).

FIG. 6 is a cross-sectional view taken along line B-B 'of the calibrator illustrated in FIG. 4 and illustrates the cooling means 140 provided in the upper plate 110. For convenience of explanation, the upper plate 110 will be described below. Rather, the cooling means 140 provided on the lower plate 120 will be described together. As shown, the cooling means 140 has upper and lower cooling water circulation paths (141, 142) are formed in the upper and lower plates (110, 120) in a horizontal zig-zag, respectively, to provide a passage through which the cooling water circulates, the upper and lower cooling water On the inlet side of the circulation paths 141 and 142, a cooler 143 for cooling the coolant circulated through the upper and lower cooling water circulation paths 141 and 142 is connected by a pipe 145, and is cooled from the cooler 143 by the circulation pump 144. The cooling water is circulated by supplying the cooled cooling water to the upper and lower cooling water circulation paths 141 and 142.

Meanwhile, a plurality of inlets and outlets of the upper and lower cooling water circulation passages 141 and 142 may be provided in plurality according to the width of the foamed molding, and valves 146 may be provided at the inlets of the upper and lower cooling water circulation passages 141 and 142, respectively. By controlling the amount of cooling water supplied to the upper and lower cooling water circulation paths (141, 142) by the operation of) can be adjusted the cooling rate of the foamed product passing through the upper and lower plates (110, 120).

Plate support 150 is, as shown in Figure 4, four support bars 151 are coupled through each corner of the lower plate 120, slidingly coupled to each corner of the upper plate 110. .

Mounting plate 152 is coupled to the upper side of the four support bar 151, the mounting plate 152 is mounted on the hydraulic cylinder 153, the hydraulic cylinder 153 is the piston rod ( 153a is mounted on the upper surface of the mounting plate 152 to penetrate downwardly through the mounting plate 152 and to be coupled to the center of the upper surface of the upper plate 110.

On the other hand, in order to improve the cooling effect of the foamed product passed through the calibrator 100 may be further provided with an auxiliary calibrator 200, Figure 7 is a front view of the auxiliary calibrator of the apparatus for producing a foam molding of a polyolefin resin according to the present invention 8 is a side cross-sectional view of the auxiliary calibrator of the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention. As shown, the auxiliary calibrator 200 has the same structure as the calibrator 100 described in detail above except that the auxiliary calibrator 200 does not have a close contact means, and the upper and lower plates 210 and 220 of the auxiliary calibrator 200 The description of the cooling means 230 and the plate support 240 will be omitted.

9 is a front view of a feeder of the apparatus for producing a foamed molded article of a polyolefin resin according to the present invention, and FIG. 10 is a side cross-sectional view of the feeder of the apparatus for preparing a foamed molded article of a polyolefin resin according to the present invention. As shown, the conveyer 300 is installed at regular intervals up and down so that the upper and lower pin belts 310 and 320 pass through the molded product passed through the auxiliary calibrator 200, the upper and lower pin belts 310 and 320 In order to provide a conveying force to the foam molding passing through the feeder 300, a plurality of feed pins (311, 321) are respectively installed on the outer surface of the).

On the other hand, the transfer pins (311, 321) is preferably formed in the longitudinal direction on both sides of the upper and lower pin belts (310,320), respectively. As a result, scratches generated by the transfer pins 311 and 321 being stuck on the surface of the foamed molding are located at both edges of the foamed molding, thereby cutting off both edges of the foamed molding so that the foamed molding is not left with scratches by the transfer pins 311 and 321.

The upper and lower pin belts 310 and 320 are supported by the belt support 340 and driven by the driving means 350.

The belt support 340 is provided with a lower gear box 342 on one side of the frame 341 through which the foamed product passes, and is installed on the other side of the lower gear box 342 and the frame 341 before and after. A pair of lower belt pulleys 343 are installed. The lower pin belt 320 is mounted on the pair of lower belt pulleys 343.

On the upper side of the frame 341, one or two or more hydraulic cylinders 344, through which the piston rod 344a penetrates the frame 341 downward, is mounted, and the end of the piston rod 344a of the hydraulic cylinder 344 is It is coupled to the upper side of the support member 345.

An upper gear box 346 is coupled to an inner side surface of the support member 345, and a pair of upper belt pulleys 347 are formed on the other side of the upper gear box 346 and the support member 345 before and after. ) Is installed.

The upper and lower gear boxes 346 and 342 are mechanically connected to the driving means 350, and the two driving means 350 includes a motor 351 and a gear box 352. In addition, the upper and lower gear boxes 346 and 342 may transmit power to any one of the belt pulleys of the pair of belt pulleys, and the belt pulleys to which power is not transmitted may be freely rotated.

In addition, an outer tooth may be formed on the outer surfaces of the two pairs of upper and lower belt pulleys 347 and 343, and an inner tooth may be formed on the inner circumferential surfaces of the upper and lower pin belts 310 and 320, respectively. The upper and lower belt pulleys 347 and 343 of the pair can stably transmit power to the upper and lower pin belts 310 and 320.

A support roller 360 may be installed at the outlet side of the feeder 300 to support the foamed product to be transported.

In addition, the foamed product passed through the feeder 300 may be cooled by using an air cooler (400), Figure 11 is a front view of the air-cooler of the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention. 12 is a side cross-sectional view of an air cooler of the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention.

As shown, the air-cooler 400 is the upper and lower housings (410, 420) coupled to the upper and lower hinges on one side are coupled to each other to form through grooves (401, 402) through which the foamed molding passes through the front and rear of the mating surface, respectively The upper and lower air inlets 411 and 421 are formed on the upper and lower surfaces of the upper and lower housings 410 and 420, respectively, and the upper and lower air injecting means 430 and 440 are disposed outside the upper and lower air inlets 411 and 421, respectively. Each is installed.

Each of the upper and lower air injection means 430 and 440 is coupled to the cover 431 and 441 so as to be sealed around each of the upper and lower air inlets 411 and 421, and motors 432 and 442 are mounted to one side of the cover 431 and 441, respectively. Inside the covers 431 and 441, cooling fans, which are not shown, coupled to the shafts of the motors 432 and 442, are provided.

The lower housing 420 is rotatably coupled to a plurality of support rollers 450 supporting the lower surface of the foam molding on both sides thereof.

On the other hand, the other side of the lower housing 420, the cylinder 461 of the hydraulic cylinder 460 is rotatably mounted on both sides, the end of the piston rod 462 of the hydraulic cylinder 460 is of the upper housing 410 Is coupled to the other side.

In addition, the upper and lower sides of the through groove 401 formed on the front of the upper and lower housings (410, 420) is provided with an air knife 470 consisting of a plurality of air nozzles 471, respectively, installed in a line in the horizontal direction. The plurality of air nozzles 471 are supplied with a high pressure air by an air pump (not shown) installed on the outside, by being hinged to the guide member 472 coupled to the front of the upper and lower housings (410,420) Can be installed at an angle.

In addition, a pinch roller 500 may be installed at an appropriate position in order to properly transport the foamed molding in consideration of the transport distance in transporting the foamed molding. As illustrated in FIG. 3, the pinch roller 500 may be installed. Is to support and transport the foamed product passed through the air cooler 400, the upper and lower rollers 520, 530 for transporting the foamed molding, the hydraulic cylinder 560 for elevating the upper roller 520, and the lower roller ( And a motor 540 for driving 530.

The lower roller 530 is rotatably coupled to both sides of the frame 510 through which the foamed molding passes in a horizontal direction, and the upper roller 520 on the upper side of the lower roller 530. Is installed in contact with the upper surface of the foamed molding.

On the other hand, both ends of the upper roller 520 is rotatably coupled to the inner surface of the support member 550, the piston rod 561 of the hydraulic cylinder 560 mounted on the upper side of the frame 510 is the frame ( The upper roller 520 is elevated by the hydraulic cylinder 560 by being mounted to penetrate downward through the 510 and coupled to the upper surface of the support member 550.

The lower roller 530 is one side of the motor 540 is connected to the belt is rotated by the rotational force of the motor 540 to provide a transfer force to the foamed molding.

The calibrator 100, the auxiliary calibrator 200, the feeder 300, the air cooler 400, and the pinch roller 500 may be installed in a table having a roller for movement in the lower side to facilitate movement in the workplace. have.

Operation of the apparatus for producing a foamed molded article of polyolefin resin having such a structure is performed as follows.

The extruder 10 is supplied with a resin, a blowing agent and other additives dispersed in a dry state, and is provided in the extruder 10 and provided in the extruder 10 by power transmitted through a gearbox from an electric motor not shown. The compression force is applied to the non-illustrated compression cylinder, and the polyolefin resin composition melts the polyolefin resin and decomposes the blowing agent under high temperature and high pressure inside the compression cylinder of the extruder, and the molten polyolefin resin and the resulting decomposition gas are in solution. It is present in the state and injected into the T-Die mold 20 connected to the extruder.

In the T-Die mold 20, the foam material is filled as it flows along the inside of the mold, thereby forming a flat plate shape at the end of the die main body 24, which is exposed to the atmosphere, and foaming occurs by depressurization, thereby achieving a desired size. The foamed molding which satisfies the and thickness is primarily completed.

These foamed moldings are transferred to the calibrator 100 due to the earth output of the T-Die mold 20, and are compressed while passing through the upper and lower plates 110 and 120, and the upper and lower portions are driven by driving the vacuum pump 135. Air is sucked from the lower vacuum tubes 131 and 132 so that the foamed molding is in close contact with the upper and lower plates 110 and 120 so that the surface of the foamed molded article is uniformly maintained. The degree to which the foamed molding is in close contact with the upper and lower plates 110 and 120 is controlled by the operation of the valve 136 installed at the inlet side of the upper and lower supply suction inlets 133 and 134.

The foamed product is cooled by the cooling water circulated through the upper and lower cooling water circulation paths 141 and 142 by the circulation pump 144 via the cooler 143 while maintaining the surface thereof uniformly. The rate at which the foamed product is cooled is controlled by the operation of the valve 146 provided on the inlet side of the upper and lower cooling water circulation passages (141, 142).

On the other hand, the flat foamed molded product that has passed through the calibrator 100 is cooled by passing through the auxiliary calibrator 200 having the cooling means 230 again, thereby further enhancing the uniformity of the surface thereof.

Foamed molding to perform this process is provided with a conveying force by the conveyor 300, the upper and lower gearbox from the drive means 350 in a state in which a plurality of conveying pins (311, 321) are embedded in both sides of the foamed molding The feed force is provided by the rotation of the upper and lower pin belts 310 and 320 driven by the rotational force supplied through the 346 and 342.

Therefore, by transmitting the transfer force to the transfer pins (311,321) to the foam molding to minimize the compression force that can be deformed the foam molding to reduce the damage of the foam molding, the transfer pins (311,321) are the upper and lower pin belts (310,320) By being formed in the longitudinal direction on both sides of the), the scratches formed on the surface of the foamed product by the transfer pins 211 and 221 are easily removed by the final process of cutting both edges of the foamed product.

By the conveyor 300, the foamed product passes through the through grooves 401 and 402 of the air cooler 400, and the lower surface of the foamed product is supported by the support roller 450.

As the foam passes through the air cooler 400, the heat remaining inside the thick foam by air injected into the upper and lower air inlets 411 and 421 by the cooling fans rotated by the motors 432 and 442. Finally, by removing the foaming product as a final product to remove the post-deformation when aging.

On the other hand, the air knife 470 provided on the front of the air cooler 400 is cut to the required length by using a high-pressure air injected from the plurality of air nozzles (471).

In addition, the pinch roller 500 may be installed at an appropriate position in order to properly transport the foamed molding in consideration of the transport distance in transporting the foamed molding. Such a pinch roller 500 may not only support the foamed molding. In addition, the lower roller 530 is rotated by the motor 540 to provide a transfer force to the foamed molding.

The apparatus for manufacturing a foam molded article of such a polyolefin resin may include a calibrator 100, an auxiliary calibrator 200, a feeder 300, an air cooler 400, and a pinch roller according to the thickness of the foamed molded product to be manufactured. The intervals of the respective devices may be adjusted by the hydraulic cylinders 153, 344, 460 and 560 respectively provided in the 500.

According to a preferred embodiment of the present invention as described above, when manufacturing the foamed molded article by the apparatus for producing a foamed molded article of the polyolefin resin of the present invention can produce a foamed molding having a thickness as desired by the consumer, when manufacturing the foamed molded article The thermal deformation of the foamed molding can be minimized, and the surface roughness of the foamed molding can be improved.

As described above, the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention not only prevents the foamed article from being deformed by heat even when a foamed molded article having a required thickness is produced, and the foaming of the foamed molded article is uniform and the surface roughness is improved. It has the effect of low manufacturing cost.

What has been described above is just one embodiment for carrying out the apparatus for producing a foamed molded article of the polyolefin resin according to the present invention, the present invention is not limited to the above embodiment, as claimed in the following claims Without departing from the gist of the present invention, anyone of ordinary skill in the art will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (15)

A foam molding apparatus having a T-Die mold for foaming a foamed material of a polyolefin resin mixed and conveyed from an extruder, An upper and lower plates installed at regular intervals up and down so as to provide a passage through which the foamed molding foamed from the T-Die mold passes, and a close means for closely contacting upper and lower surfaces of the foamed molding to the upper and lower plates; A calibrator having cooling means for cooling the foamed product passing through the upper and lower plates, and a plate support for supporting the upper and lower plates; Upper and lower pin belts are installed at regular intervals so that the foamed product passed through the calibrator passes therethrough, and a plurality of transport pins are provided on the outer surface to provide a transfer force to the foamed product that passes. A conveyer having a belt support for supporting a lower pin belt and driving means for driving the upper and lower pin belts; Foamed article manufacturing apparatus of a polyolefin resin comprising a. According to claim 1, wherein the contact means of the calibrator, A plurality of upper and lower vacuum tubes each formed perpendicular to the upper and lower plates of the calibrator, one end of which is in contact with the upper and lower surfaces of the foamed molding; Upper and lower air suction holes connected to the other ends of the upper and lower vacuum tubes, respectively; Apparatus for producing expanded molded article of polyolefin resin, characterized in that it consists of a vacuum pump that sucks air from the upper and lower air inlets. 3. The foamed article manufacturing apparatus of claim 2, wherein the upper and lower vacuum tubes of the contact means form an orifice at one end contacting the upper and lower surfaces of the foamed molded article, respectively. According to claim 2, wherein the upper and lower air intake of the close means is provided with a valve at each end to adjust the strength of the foam molding is in close contact with the upper and lower plates by adjusting the vacuum in the upper and lower vacuum tubes Apparatus for producing expanded molded article of polyolefin resin, characterized in that. 2. The apparatus of claim 1, further comprising: upper and lower plates installed at regular intervals up and down to provide a passage through which the foamed product passed through the calibrator passes; Cooling means for cooling the foamed product passing through the upper and lower plates; A plate support for supporting the upper and lower plates; Apparatus for producing a foamed molded article of a polyolefin resin further comprising a secondary calibrator having a. The method of claim 5, wherein the calibrator and the cooling means of the auxiliary calibrator, Upper and lower cooling water circulation paths each formed in a zigzag horizontally on the upper and lower plates and providing a passage through which cooling water is circulated; A cooler installed at an inlet side of the upper and lower cooling water circulation paths and cooling the cooling water circulated through the upper and lower cooling water circulation paths; A circulation pump circulating the cooling water by supplying cooling water cooled from the cooler to the upper and lower cooling water circulation paths; Apparatus for producing expanded molding of polyolefin resin, characterized in that consisting of. 7. The foaming of the polyolefin-based resin according to claim 6, wherein the upper and lower cooling water circulation paths of the cooling means are provided with valves at their inlets, respectively, to control the cooling rate of the foamed product passing through the upper and lower plates. Molding apparatus. According to claim 5, The calibrator and the plate support of the auxiliary calibrator, Four support bars coupled to each corner of the lower plate and slidingly coupled to each corner of the upper plate; A mounting plate coupled to an upper side of the support bar; A hydraulic cylinder mounted on an upper side of the mounting plate, the piston rod passing downward through the mounting plate and coupled to a center of an upper surface of the upper plate; Apparatus for producing expanded molded article of polyolefin resin, characterized in that consisting of. The apparatus of claim 1, wherein the transfer pins of the upper pin belt and the lower pin belt of the conveyor are formed on both sides of the upper and lower pin belts in the longitudinal direction, respectively. According to claim 1, The belt support of the conveyor, A frame through which the foamed product passes; A lower gear box installed at one side of the frame and connected to the driving means of the conveyor; A pair of lower belt pulleys which are respectively installed before and after the lower gear box and the other inner side of the frame and on which the lower pin belt is mounted; One or two or more hydraulic cylinders installed on an upper side of the frame, the piston rod passing downward through the frame; A support member having an upper side coupled to an end of a piston rod of the hydraulic cylinder; An upper gear box installed at one side of the support member and connected to the driving means of the conveyor; A pair of upper belt pulleys, each of which is installed on the other side of the upper gear box and the supporting member, before and after the upper pin belt is mounted; Apparatus for producing expanded molded article of polyolefin resin, which is characterized by According to claim 1, The upper side and the lower side are coupled to the upper and lower by a hinge, through grooves through which the foamed molding passes through the front and rear of the mating surface, respectively, the upper and lower air inlet is formed on the upper and lower surfaces, respectively A housing; Upper and lower air injection means respectively installed around the upper and lower air inlets for injecting air into the upper and lower air inlets; It is rotatably coupled to the inner side of the lower housing, the apparatus for producing a foam molded article of a polyolefin resin, characterized in that it further comprises an air cooler having a support roller for supporting the foam molded article. 12. The polyolefin-based system of claim 11, wherein the air cooler further includes a hydraulic cylinder on which the cylinder is rotatably mounted on both sides of the lower housing, and an end of the piston rod is coupled to the other side of the upper housing. Foam molded article manufacturing apparatus of the resin. 12. The polyolefin according to claim 11, wherein the air cooler further comprises an air knife in which a plurality of air nozzles are installed in the horizontal direction at upper and lower sides of the through grooves formed in front of the upper and lower housings, respectively. Apparatus for producing foam molding of resin. According to claim 11, The upper and lower air injection means of the air cooler, A cover coupled to be sealed around each of the upper and lower air inlets; A motor mounted on one side of the cover; A cooling fan coupled to the shaft of the motor and provided inside the cover; Apparatus for producing expanded molded article of polyolefin resin, characterized in that consisting of. 12. The apparatus of claim 11, further comprising: upper and lower rollers for conveying the foamed molded article; A hydraulic cylinder for elevating the upper roller; It is made of a motor for driving the lower roller, the foam molded article manufacturing apparatus further comprises a pinch roller (pinch roller) for supporting and transporting the foamed product passed through the air-cooler.