KR100818940B1 - Stampable sheet manufacturing device - Google Patents

Abstract

A stampable sheet manufacturing device is provided to supply directly heated air to a complex mat when the complex mat is heated so that thermal efficiency is raised and the productivity is improved. A stampable sheet manufacturing device includes a complex mat manufacturing device, a heating device(30), and a cooling device(50). The complex mat manufacturing device includes a fiber releasing unit, a dust particle remover(13), a feed, a scale hopper(14), a fiber mixing tank(15), a fiber distributor(16), a fiber arrangement unit(17), and a punching unit(18). The fiber releasing unit releases different kinds of fiber. The dust particle remover removes dust particles generated from the fiber releasing unit. The feed surfaces the fiber from the fiber releasing unit. The scale hopper measures the weight of the fiber from the feed. The fiber mixing tank mixes the fiber from the scale hopper. The fiber distributor distributes the fiber from the fiber mixing tank. The fiber arrangement unit arranges the fiber in a multiple layer. The punching unit punches a fiber layer. The heating device heats and presses a complex mat from the complex mat manufacturing device. The cooling device cools and presses the complex mat from the heating device.

Description

Stampable sheet manufacturing device

1 is a side view showing a conventional stampable sheet manufacturing apparatus.

Figure 2 is a side view showing a composite mat manufacturing apparatus constituting a conventional stampable sheet manufacturing apparatus.

Figure 3 is a side view showing a heating device and a cooling device constituting a conventional stampable sheet manufacturing apparatus.

Figure 4 is a side view showing a stampable sheet manufacturing apparatus of the present invention.

Figure 5 is a side view of the composite mat manufacturing apparatus constituting the stampable sheet manufacturing apparatus of the present invention.

Figure 6 is a side view showing a heating device constituting the stampable sheet manufacturing apparatus of the present invention.

7 is a front view showing a conveyor belt of the heating apparatus.

8 is a cross-sectional view of a heating apparatus constituting the stampable sheet manufacturing apparatus of the present invention.

Figure 9 is a side view showing a cooling device constituting the stampable sheet manufacturing apparatus of the present invention.

10 is a front view showing a conveyor belt of the cooling device.

11 is a cross-sectional view of a cooling apparatus of the stampable sheet manufacturing apparatus of the present invention.

Figure 12 is a block diagram showing a stampable sheet manufacturing method of the present invention.

** Description of the symbols for the main parts of the drawings **

10: composite mat manufacturing apparatus 11: fiber fiber

12: Whid 13: Dust Removal

14: Weighing Hopper 15: Horn sum tank

16: Disperser 17: Front Machine

18: Needle Punching Machine

30: heating device 31: upper frame

32: lower frame 33: conveyor

34: conveyor belt 35: perforated plate

36: hot air jet nozzle

50: cooling device 51: air cooling unit

52: water cooling 53: upper frame

54: lower frame 55: conveyor

56: conveyor belt 57: steel plate

58: air jet nozzle 59: coolant jet nozzle

60: drum 61: tension regulator

70: composite mat

The present invention relates to a stampable sheet manufacturing apparatus and a manufacturing method, and more particularly to fabricating a composite mat by dissolving and intermixing heterogeneous fibers, and to produce a stampable sheet by heating and pressing the composite mat and then cooling and pressing. In the stampable sheet manufacturing apparatus, and a heating device for heating and pressurizing the composite mat and a cooling device for cooling and pressurizing as a separate device, the stampable sheet manufacturing apparatus and manufacturing method with improved productivity.

A composite material that enables the emergence of new functions by mixing two or more different materials has been developed with the main purpose of maintaining light weight, high specific strength, inelasticity, and enhanced mechanical properties. · It is widely used in each industrial field that requires characteristics such as strength, rigidity and durability of products such as electronic parts.

Representative examples of such composite materials include a composite material (FRP) in which unsaturated polyester resin is reinforced with glass fibers and a fiber reinforced composite material (FRTP) using thermoplastic resin.

Here, the composite material (FRP) reinforced with thermosetting polyester resin with glass fiber is widely used in each industrial field that requires characteristics such as strength, stiffness and durability of the product because it has superior performance over metal.

However, the composite material (FRP) has a problem in that physical properties such as impact resistance and fracture toughness are not satisfactory, and the width of deformation that is acceptable when deformation of the material is small and it is difficult to recycle.

In contrast, fiber-reinforced thermoplastic resin composite (FRTP) serves as a substitute for solving the above problems, and has recently increased the expectations in the field of use and applications for replacing metal based on automotive parts.

For example, it is widely applied to structures and various exterior parts such as chassis and the like which require high impact resistance and high strength, in addition to the use of interior parts and non-structural materials, which are conventionally used for automobile parts. Due to the fact that the excessive stamping molding method can be applied, the productivity is high, and the freedom of design is superior to that of metal, and thus the use in various industrial fields is spreading.

In order to function properly for the above uses, FRTP must first be manufactured in the form of a sheet-like sheet, that is, a stampable sheet, as a raw material form that is suitable for molding processing of various molded articles. Although a method of mixing and pelletizing thermoplastic resins is adopted, it is difficult to uniformly mix the two types of materials due to the mixing and heating of powder or pellet thermoplastic resin with reinforced resin fibers as matrix resin. In addition, there is a problem in that the resin in the powder or pellet state is easily separated even after the various treatment process after mixing, it is difficult to produce a high quality product because the reinforced resin fibers are not uniformly dispersed in the matrix resin.

In order to solve the above problems, as shown in FIGS. 1 to 3, heterogeneous fibers such as thermoplastic resin fibers and reinforcing fibers, which are the material of the stampable sheet, are supplied, and the hetero fibers are mixed and mixed so that the heterogeneous fibers can be uniformly mixed. By heating the composite mat manufacturing apparatus 110 and the composite mat 170 supplied from the composite mat manufacturing apparatus 110 by arranging in a layer to the thermoplastic resin fibers and reinforcing fibers are appropriately melted Although the apparatus for manufacturing a stampable sheet has been disclosed, which comprises a heating unit 130 for heating and pressing to be compressed and a cooling unit 150 for cooling and pressurizing, the stampable sheet manufacturing apparatus is a composite mat by decomposing and intermixing different fibers. In the preparation, it is difficult to uniformly control the mixing ratio because the heterogeneous fibers are not uniformly mixed and mixed, and a large amount in the mixed process There is a problem that deterioration of workability due to the generation of dust.

In addition, the heat transfer is not smooth by providing indirect heat through the steel Kenvey belt 157 in the heating unit 130 for heating and pressurizing the composite mat, the heating unit for heating and pressing the composite mat 170 ( 130 and the cooling unit 150 to cool and pressurize as a single device, there is a problem that the heat loss occurs by repeated heating and cooling to decrease the productivity.

In addition, when the air-cooled method of cooling by heat exchange with the outside air is used in the process of cooling and pressurizing the composite mat which has undergone the heating and pressing process, the required time of the cooling process is increased and the equipment is enlarged. In the case of using a water-cooled method that is cooled by heat exchange with the cooling water, the time required for the cooling process can be shortened. However, since the cooling is performed in a short time, the pressurization is not properly performed. There was a problem that a gap occurs between the inside and the outside of the stampable sheet, or even fall apart without being bonded to each other.

The present invention has been made to solve the above problems, the object of the present invention is to heat and pressurize the composite mat in the heating device, and the cooling and pressurizing process is made in each of the stampable sheet to be made It is to provide a stampable sheet manufacturing apparatus and method for reducing heat loss generated during the manufacturing process and improved thermal efficiency and quality.

In addition, by providing hot air directly to the composite mat in the process of heating the composite mat to provide a stampable sheet manufacturing apparatus and a manufacturing method which is excellent in thermal efficiency and productivity is improved.

In addition, in the process of cooling the heated composite mat, the air cooling type by primary air cooling and the secondary cooling by the cooling water is carried out to improve the cooling efficiency as well as to improve the quality of the internal and external properties of the stampable It is to provide a sheet manufacturing apparatus and a manufacturing method.

In addition, the present invention provides a stampable sheet manufacturing apparatus and a manufacturing method of improving the work environment by improving the work environment by removing a large amount of dust generated during fiber desizing by using the dust remover.

Apparatus and method for manufacturing a stampable sheet according to the present invention for achieving the object as described above is a fiber seam to release the heterogeneous fibers, a bead interfacing the fibers passing through the fiber islands, supplied through the Composite mat production apparatus comprising a metering hopper for measuring the fiber; A heating device for heating and pressurizing the composite mat manufactured by the composite mat manufacturing apparatus; And a cooling device for cooling and pressurizing the composite mat heated and pressurized by the cooling device. Characterized in that comprises a.

In addition, the apparatus for producing a composite mat, a blending tank for mixing the fibers dissolved by the fiber breaker, a disperser for uniformly supplying the fibers mixed in the blending tank, the front facer for aligning the fibers supplied from the disperser in layers And it is characterized in that it further comprises a needle punching device for punching the fiber layer aligned through the front face.

In addition, the fiber fiber island is characterized in that it further comprises a dust remover for removing the dust generated in the fiber fiber island process.

In addition, the feed and the hopper is characterized in that each is installed in the frame disposed spaced apart from each other.

In addition, the heating device, the upper frame disposed on the upper; A lower frame disposed below the upper frame by a predetermined distance; Conveyors provided in the upper and lower frames, respectively; And hot air spray nozzles respectively provided on the upper and lower frames to supply hot air to the conveyor.

Here, the conveyor is characterized in that it comprises a perforated plate belt consisting of a plurality of perforated plates.

In addition, the cooling device, the upper frame disposed on the upper; A lower frame disposed below the upper frame by a predetermined distance; A conveyor provided in each of the upper and lower frames; And cooling water injection nozzles provided in the upper and lower frames, respectively, to supply cooling water to the conveyor.

Here, the conveyor is characterized in that it comprises a steel plate belt made of a steel plate.

In addition, the cooling device is characterized in that it further comprises an air cooling unit in which air cooling is performed.

In addition, in the method of manufacturing a stampable sheet in which heterogeneous fibers are mixed with fibers and arranged uniformly in a layer to produce a composite mat, and the composite mat is heated, pressurized, cooled, and pressed to produce a stampable sheet having improved physical properties. ,

It characterized in that it comprises a composite mat manufacturing step of manufacturing a composite mat, a heating step of heating and pressing the composite mat, and a cooling step of cooling and pressing the composite mat.

Here, the composite mat manufacturing step, the sea island step of loosening the fibers; A blending step of mixing the unfinished fibers; A carding step of arranging the interwoven fibers in layers; A horizontal molding step of laminating the fibers arranged in layers in multiple layers; It further comprises a needle punching step of adjusting the volume by punching the aligned fibrous layer.

Hereinafter, a stampable sheet manufacturing apparatus and a manufacturing method according to the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

Figure 4 is a side view showing a stampable sheet manufacturing apparatus of the present invention, Figure 5 is a side view of a composite mat manufacturing apparatus constituting the stampable sheet manufacturing apparatus of the present invention, Figure 6 is a stampable sheet manufacturing apparatus of the present invention Fig. 7 is a front view showing a conveyor belt of the heater, Fig. 8 is a sectional view of the heater constituting the stampable sheet manufacturing apparatus of the present invention, and Fig. 9 is a stampable of the present invention. It is a side view which shows the cooling apparatus which comprises a sheet manufacturing apparatus, FIG. 10 is a front view which shows the conveyor belt of a cooling apparatus, FIG. 11 is sectional drawing of the cooling apparatus which comprises the stampable sheet manufacturing apparatus of this invention, FIG. It is a block block diagram which shows the stampable sheet manufacturing method of this invention.

Figure 4 is a view showing a stampable sheet manufacturing apparatus of the present invention, by receiving heterogeneous fibers such as thermoplastic resin fibers and reinforcing fibers to be a material of the stampable sheet, the heterogeneous fibers are mixed and mixed so that the heterogeneous fibers are uniformly mixed The composite mat manufacturing apparatus 10 for arranging the composite mat 70 and the composite mat 70 supplied from the composite mat manufacturing apparatus 10 are heated to appropriately melt and compress the thermoplastic resin fibers and the reinforcing fibers. Consists of a heating device 30 for heating and pressurizing and a composite device 70 passing through the heating device 30 to have uniform physical properties, as well as cooling and pressurizing to stabilize and stabilize. have.

The raw material used in the present invention is thermoplastic polyester resin fiber copolymerized with thermoplastic resin fiber such as polyethylene, polypropylene, polyvinyl chloride, polyester, polyethylene-polyester copolymer and isophthalic acid component containing metal sulfonate group. In addition, a herbicidal composite fiber such as a polyester composite fiber whose primary component is a thermoplastic polyethylene terephthalate resin fiber is used.

In addition, a polyester composite air interlocking yarn, a jute and a jute interlaced with a thermoplastic resin hollow fiber to a polyester hollow fiber and a highly shrinkable polyester fiber including polyester-based, polyethylene-based, nylon-based and heat-soluble fluorocarbon resins ), Hemp, flax, abaca, banana, hemp fibers such as flax fibers, natural fibers such as coir, wool, cashmere and silk fibers.

FIG. 5 is a view illustrating an apparatus for manufacturing a composite mat, and a fiber interfacing device (11) for dissipating fibers by receiving heterogeneous fibers such as thermoplastic resin fibers and reinforcing fibers, and a fiber interfacing the fibers passing through the fiber interfacing device (11) The metering hopper 14 which arrange | positions the fiber which dissolves the fiber 12 is arrange | positioned at the lower part of the said bread | wire 12 is arrange | positioned. And a disperser 16 for uniformly supplying the mixed fiber fed through the horn sum tank 15 and the mixed fiber received through the horn sum tank 15 is supplied to the front face 17 is disposed from the metering hopper 14 And a needle punching machine 18 for punching holes so as to receive a fiber from the disperser 16 and to align the layers, and to receive a fiber layer arranged in layers through the front machine 17 to have a constant volume. It is provided.

The fiber islander (11) is a device that performs a process of releasing fibers by receiving heterogeneous fibers such as thermoplastic resin fibers and reinforcing fibers, and a problem of deteriorating workability by generating a large amount of dust in the process of fiber islands. there was. Thus, to solve such a problem, the fiber islander 11 is provided with a dust remover 13 for removing dust generated from the fiber islander 11. As the fiber remover 11 is provided with a dust remover 13, the generation of dust is significantly reduced, resulting in a comfortable working environment and improved workability.

The fibers resolved through the fiber breaker 11 are interfaced through the feed 12 and discharged to the metering hopper 14 to be metered. In this process, due to the vibration generated from the feed 12 has a problem that the weighing operation of the metering hopper 14 is not made correctly. Thus, the frame for fixing the feed 12 and the frame for fixing the metering hopper 14 is manufactured in a separate frame so that the metering hopper 14 is not affected by the vibration generated in the bead 12 , The weighing hopper 14 is always made accurate weighing regardless of the external influence.

6 is a view showing a heating apparatus, wherein the heating apparatus 30 is a conveyor provided at upper and lower frames 31 and 32 facing each other and disposed at opposite ends of the upper and lower frames 31 and 32. 33) and a plurality of hot air spray nozzles 36 provided on the upper and lower frames 31 and 32 to spray hot air to the conveyor 33.

The conveyor 33 provided at the ends of the upper and lower frames 31 and 32 is composed of a plurality of rollers and a conveyor belt 34 which rotates along the outer surface of the rollers and is supplied from the composite mat manufacturing apparatus 10. It serves to convey and press the composite mat (70).

The composite mat 70 transferred to the inside of the heating apparatus 30 by the conveyor 33 is heated and melted by the hot air supplied from the hot air injection nozzle 36, and the pressure applied from the conveyor 33. Is compressed by

7 is a view showing a conveyor belt, the conveyor belt 34 is composed of a plurality of perforated plates 35 so that hot air can be directly supplied to the composite mat 70 in the heating process. By using the conveyor belt 34 made of the perforated plate 35 as described above, hot air injected from the hot air injection nozzle 36 is directly supplied to the composite mat 70 to improve thermal efficiency and hot air to the composite mat ( As well as the surface of the 70) is supplied to the deep portion, there is an advantage that the inner and outer parts are uniform, so that the quality is improved and the process time is shortened.

FIG. 8 is a cross-sectional view of a heating apparatus, in which hot air sprayed from the hot air spray nozzles 36 provided in the frame passes through a conveyor belt 34 formed of a perforated plate 35 of the composite mat 70. Surfaces as well as deep parts are fed. As such, the hot air is directly supplied to the composite mat 70, so that the heat efficiency is excellent and the inside and the outside of the composite mat 70 are uniformly heated.

The hot air jet nozzle 36 may be provided in both the upper and lower frames 31 and 32, as shown in the figure, may be provided only at any one selected from the upper frame 31 or the lower frame 32, The upper and lower frames 31 and 32 may cross each other so as not to face each other.

It is obvious to those skilled in the art that the heating device 30 is provided with a control device for adjusting the pressure of the pressure control or the volume of the composite mat (70).

9 is a view showing a cooling device, the upper and lower frames 53 and 54 arranged at a predetermined distance apart from the conveyor 55 and the conveyor 55 provided at opposite ends of the frames 53 and 54. A plurality of air jet nozzles 58 and coolant jet nozzles 59 are provided in the upper and lower frames 53 and 54 to jet air and coolant.

The conveyor 55 provided at the ends of the upper and lower frames 53 and 54 is composed of a plurality of rollers and a conveyor belt 56 that rotates along the outer surface of the rollers. The heated composite supplied from the heating device 30. It serves to convey and press the mat (70).

The conveyor 55 is driven by a drum 60 installed at the front and rear ends of the cooling apparatus, and the drum 60 is provided with a tension adjusting device 61 to move by the drum 60. The tension of the belt 56 can be easily adjusted. In this way, by easily adjusting the tension of the conveyor belt to prevent the tracking phenomenon.

The composite mat 70 transferred to the inside of the cooling device 50 by the conveyor 55 is an air cooling unit 51 having an air injection nozzle 58 in the upper and lower frames 53 and 54 and the The upper and lower frames 53 and 54 are cooled by heat exchange with air and cooling water while passing through the water cooling unit 52 provided with the cooling water injection nozzle 59 and compressed by the pressure applied from the conveyor 55.

10 is a view showing a conveyor belt, the conveyor 55 provided in the cooling device 50 is a conveyor belt 56 made of a steel plate with a high thermal conductivity so that heat exchange is actively performed by the air and cooling water, which is a heat exchange medium. Is provided.

The conveyor belt 56 of the cooling device 50 is a steel plate belt made of a single steel plate, unlike the heating device 30 using a plurality of perforated plates 35.

11 is a cross-sectional view of the cooling device, wherein the air or cooling water injected from the air jet nozzle 58 and the coolant jet nozzle 59 provided in the upper and lower frames 53 and 54 is a conveyor belt made of a steel plate. Sprayed to 56 so that the heat exchange is made to indirectly cool the composite mat (70). As such, the cooling using the air and the cooling using the cooling water are mixed to solve the problem caused by the cooling caused by the rapid temperature difference, and the cooling time can be adjusted flexibly, thereby making it easy to manufacture the stampable sheet.

In some cases, the cooling may be performed by heat exchange with the outside air without driving the air injection nozzle 58, and the driving of the cooling water injection nozzle 59 may also stop the driving of a part, in accordance with production conditions. Elastic modifications are possible.

The air jet nozzle 58 and the coolant jet nozzle 59 may be provided in both the upper and lower frames 53 and 54 together with the hot air jet nozzle 36 and may be selected from the upper frame 53 or the lower frame 54. It may be installed only in any one place and may be installed in the upper and lower frames 53, 54 so as not to face each other.

Like the heating device 30, the cooling device 50 also has a control device for adjusting the volume of the composite mat 70 or the pressure to be pressurized is natural to those skilled in the art.

12 is a view showing a method for manufacturing a stampable sheet, the method for manufacturing a stampable sheet includes a seam step of releasing dissimilar fibers, a blending step of mixing the unfinished fibers, and a carding step and a layer of arranging the mixed fibers in layers. A composite mat manufacturing step including a horizontal molding step of laminating the fibers in multiple layers, a heating step of applying a predetermined heat and pressure to the composite mat and pressurizing and cooling the composite mat subjected to the heating step to a predetermined pressure A cooling step is performed.

The present invention is not limited to the above-described embodiments, and the scope of application of the present invention is not limited, and the present invention is not departed from the gist of the present invention as claimed in the claims, and various changes can be made by those skilled in the art. Implementation will be possible.

As described above, the stampable sheet manufacturing apparatus and the manufacturing method of the present invention can be improved by heating and cooling efficiency as a result of configuring the heating device in which the heating and pressurizing process and the cooling device in which the cooling and pressurizing process are performed as individual devices. There is an effect that the equipment can be miniaturized.

In addition, the hot air is directly supplied to the composite mat in the heating process, the thermal efficiency is improved, and the surface and the deep portion of the composite mat are uniform, thereby improving the quality.

Further, in the process of cooling the heated composite mat, the cooling efficiency is improved by performing the first cooling of the air-cooled type by the outside air and the second cooling by the cooling water, and the physical properties of the inside and the outside of the composite mat are uniform so that the stamper The effect is that the quality of the sheet is improved.

In addition, there is an advantage that the environment of the workplace is comfortable by the dust removing the large amount of dust generated during the fiber desealing process, thereby improving workability.

In addition, it is possible to produce a stampable sheet having a constant volume and weight by fixing the feed pier interfacing the fibers, and the metering hopper for anchoring the fibers, in a separate frame.

Claims (11)

Fibre-disassembler for releasing dissimilar fibers, dust removal to remove dust generated during fiber-disassembly process, a bee for interfacing the fibers passing through the fiber-isleter, and a metering for metering the fibers supplied through the feed A horn, a blending tank for mixing the fibers introduced through the metering hopper, a disperser for uniformly supplying the blended fibers in the blending tank, a front panel for arranging the fibers supplied from the disperser in layers, and the front unit Composite mat manufacturing apparatus comprising a needle punching device for punching the fiber layer aligned through; A heating device for heating and pressurizing the composite mat manufactured by the composite mat manufacturing apparatus; And A cooling device for cooling and pressurizing the composite mat heated and pressurized by the cooling device; Stampable sheet manufacturing apparatus comprising a. delete delete The method of claim 1, The feeder and the measuring hopper is a stampable sheet manufacturing apparatus, characterized in that each installed on the frame disposed spaced apart from each other. The method of claim 1, The heating device, An upper frame disposed at the top; A lower frame disposed below the upper frame by a predetermined distance; A conveyor provided in each of the upper and lower frames; And a hot air jet nozzle for supplying hot air to the conveyor, respectively provided in the upper and lower frames. The method of claim 5, wherein The conveyor is a stampable sheet manufacturing apparatus comprising a perforated plate belt consisting of a plurality of perforated plates. The method of claim 1, The cooling device, An upper frame disposed at the top; A lower frame disposed below the upper frame by a predetermined distance; A conveyor provided in each of the upper and lower frames; And a cooling water injection nozzle which is provided in each of the upper and lower frames to supply cooling water to the conveyor. The method of claim 7, wherein The conveyor is a stampable sheet manufacturing apparatus comprising a steel plate belt made of a steel plate. The method of claim 7, wherein The apparatus for manufacturing a stampable sheet, characterized in that the cooling device further comprises an air cooling unit. delete delete

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