WO2020085587A1

WO2020085587A1 - Apparatus for continuously manufacturing polyurethane strand foam

Info

Publication number: WO2020085587A1
Application number: PCT/KR2019/002720
Authority: WO
Inventors: 정용채
Original assignee: (주)디유티코리아
Priority date: 2018-10-22
Filing date: 2019-03-08
Publication date: 2020-04-30
Also published as: KR102172142B1; KR20200045285A

Abstract

The present invention includes a guide part so that the height and angle thereof can be adjusted according to the amount and density of a foaming solution to be supplied when foaming is carried out for molding strand foam by coating a polyurethane reactive mixture on a rotating conveyor belt, and thus performs molding through a simple operation so that the upper surface of the strand foam is flat, thereby preventing a convexly curved surface from being formed on the upper surface of the strand foam, so as to reduce the amount of waste foam to be generated. Therefore, a convexly upward curved surface shape, like a crown shape formed on the upper surface of a foam (6), as illustrated in figure 2, is not formed when a block foam is molded by means of a conventional apparatus for continuously manufacturing a polyurethane strand foam, and thus economic efficiency is high since there are no regions from which an convexly upward curved surface should be removed.

Description

Equipment for continuous production of polyurethane strand foam

The present invention relates to an apparatus for continuously producing a strand foam of polyurethane, and more specifically, the amount and density of foam supplied during foaming to form a strand foam by applying a polyurethane reactive mixture on a rotating conveyor belt. By forming the guide part so that the height and angle can be adjusted according to the shape, the upper surface of the strand foam is formed by a simple operation so that the curved surface of the block foam is not formed on the upper surface of the strand foam, so that the closed foam is It relates to a continuous production device of a strand foam of polyurethane, characterized in that the amount of generation can be reduced.

Polyurethane foam has a structure of [-NHCOO-] n synthesized by dissipating high temperature heat under appropriate conditions by adding a blowing agent to a mixture of alcohol and isocyanate having an active hydroxyl group (-OH). As an exothermic foam, it is widely used in various industries such as construction materials, automobile parts, and household goods.

Polyurethane foam (Polyurethane foam), as shown in Figure 1 according to the molding method, the raw material (1) is a paper (4) continuously flowing over the conveyor belt (3) through a foam injector (mixing head) (4) ) By discharging the foaming liquid (5) on top, the foam (6) is coated with a mold release agent inside the pre-heated mold and the conventional Crown-Block Process, and the foaming liquid is injected into the mold through the foam injector. There is a molded foam process, etc., after which foaming is performed.

When the foam 6 as shown in FIG. 1 is cut and used for the use of a block foam such as a mattress, a mat, or a building panel, the entire surface should be in a block shape of a smooth flat surface, as shown in FIG. Likewise, since the upper surface of the foam 6 is formed with a convexly curved upper surface like a crown shape, there is a problem in that economical efficiency is deteriorated because there are more parts that need to remove the convexly curved curved surface. .

Therefore, as a method for eliminating the above problems, a device for continuous production of a foam block of a vertical cross-section of US Patent No. 4,120,626 (registered on October 17, 1978) is a charging device 4 as shown in FIG. When the foaming mixture (5) is applied on a rotating conveying belt (1) and foamed in the foaming area (7) to form the foaming agent block (8), a counterweight (13) connected to a plurality of cables (12) Although a device for preventing the upper surface of the foaming agent block 8 from convexly rising by using a plurality of covers 11 mounted on the plurality of connecting devices 10 is known, it is complicated in the case of the device. In addition, when the plurality of covers 11 is not operated, there is a fear that the upper surface is formed of a block foam formed in a crown shape.

U.S. Patent No. 7,968,023 (registered on June 28, 2011) Method for the production of polyurethane-based block blowing agent, as shown in Figure 4, the polyurethane reaction mixture is separated from the feed through the outlet 15 in the mixer (1) It is supplied to the thin plate 2, and the front side of the separator 9 on the side through the lower gap opening 5 by a free-flowing method into the accumulation chamber 4 through the upper feed opening 3 Flowing along the upper separating thin plate 12 guided along the wall, cut through the horizontal gap 8 and the expansion chamber 8 and foam in the foaming region 14 to a certain standard to cut the block foam Although the device is known, there has been a problem in that the device has a complicated guide portion for adjusting the height and angle.

Japanese Patent Registration No. 5069566 (Registration on August 24, 2012) Method and apparatus for manufacturing polyurethane block foam, as shown in Figure 5, the polyurethane reaction mixture in the mixer (1) and the discharge path (2) and the gap Apparatus for forming a polyurethane block foam by applying to the substrate paper 3 on the top of the application plate 5 rotating through the (gab) 7, the ratio of the gap gab 7 to the length b It is characterized by adjusting the range to a specific value, but in the case of the above device, even if the ratio of the length b of the gap (gab) 7 is adjusted, the ratio is different depending on the characteristics of the mixture, so that the adjustment is difficult. In addition, even if the adjustment was made, there was a fear that the block foam formed with the upper surface in the shape of a crown was formed.

The present invention is a method for solving the problems as described above, when foaming to form a strand foam by applying a polyurethane-reactive mixture on a rotating conveyor belt, the height and height according to the amount and density of the supplied foam liquid By forming the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that the curved surface of the block shape is not formed on the upper surface of the strand foam, thereby reducing the amount of generated waste foam. An object of the present invention is to provide an apparatus for continuously producing a strand foam of polyurethane characterized by being present.

According to the features of the present invention for achieving the above object, the raw material is mixed, the supply unit 200 having a mixing head 210 for discharging the foaming liquid, and is discharged through the mixing head 210 Strand of polyurethane comprising a transfer unit 300 for transferring the foaming liquid, and a guide portion 10 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 to be transferred by the transfer unit 300 In the apparatus 100 for continuously manufacturing a foam, the guide part 10 includes a guide member 20 for pressing an upper portion of the foamed liquid discharged through the mixing head 210; It is connected to the guide member 20, and an angle adjusting member 30 for adjusting the angle of the guide member 20; It is fixed to the frame 110, characterized in that it comprises a movable member 40 for moving the angle adjustment member 30 up and down.

In the apparatus for continuously producing a strand foam of polyurethane according to the present invention, the angle adjusting member 30 includes a rotating rod 32 in the longitudinal direction rotated by an actuator 31; A rotating link 33, which is rotatably coupled on one side of the rotating rod 32; A plurality of adjustment bolts 34, one side of which is coupled on the rotation link 33 and whose length is adjusted by forward or reverse rotation; One side is coupled to the other side of the adjustment bolt 34, it characterized in that it comprises a fixture 35 to which the guide member 20 is fixed to the other side.

And in the continuous manufacturing apparatus of the strand foam of the polyurethane according to the present invention, the plurality of adjustment bolts 34 are combined to have different lengths on the rotation link 33, which is coupled to the lower portion of the rotation link 33 The adjustment bolt 34 is characterized in that it is formed to have a shorter length than the adjustment bolt 34 coupled to the upper portion.

In addition, in the continuous manufacturing apparatus for a strand foam of polyurethane according to the present invention, the guide member 20 is provided in plural so as to be coupled to a fixture 35 coupled to a plurality of adjustment bolts 34 of the angle adjustment member 30. It is configured, the adjacent guide member 20 is connected by a connecting member 21 is characterized in that the angle is adjusted by the rotation of the rotation link 33 or the length adjustment of the adjustment bolt 34.

In the apparatus for continuously producing a strand foam of polyurethane according to the present invention, the guide member 20 includes a coupling hole 22 coupled to a fixture 35 of the angle adjusting member 30; It is characterized in that it comprises a pressing plate 23 for pressing the upper portion of the foamed liquid discharged through the mixing head 210, is coupled to the coupling port (22).

And in the continuous manufacturing apparatus of the strand foam of the polyurethane according to the present invention, the movable member 40 is fixed to the frame 41 is formed on the frame 110 is formed spaced apart; A jack screw shaft 43 connected to the fixture 41 through a bearing and having a handle 42 at one end thereof; A jack screw 44 formed on the jack screw shaft 43; A coupling plate 45 coupled to a lower portion of the jack screw 44; It is characterized in that it comprises a coupling profile 46 that is coupled to the lower portion of the coupling plate 45, the angle adjusting member 30 is coupled.

According to the apparatus for continuously producing a strand foam of polyurethane according to the present invention, a polyurethane reactive mixture is applied on a rotating conveyor belt, and when foaming to form a strand foam, the height and the height of the foam are supplied. By forming the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that it is suitable for use in block foams such as mattresses, mats, or architectural panels by cutting the molded foam. It has the effect that all the six sides are formed into a smooth flat shape.

Therefore, when forming a block foam by a continuous manufacturing apparatus of a conventional strand foam of polyurethane, as shown in FIG. 2, the upper surface of the foam 6 is convexly raised to the top like a crown shape. Since the shape of is not formed, there is no part to remove the curved surface rising convexly to the top, so it is highly economical.

1 is a perspective view schematically showing an apparatus for continuously manufacturing a strand foam of a conventional polyurethane,

Figure 2 is a cross-sectional view taken along the plane A-A 'of Figure 1,

3 to 5 is a schematic view showing a conventional apparatus for manufacturing a continuous continuous foam of polyurethane,

Figure 6 is a perspective view of a continuous production apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention,

7 is a side view of a continuous manufacturing apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention,

8 is a perspective view of a guide portion in a continuous manufacturing apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention,

9 is an exploded perspective view of the guide portion in the continuous manufacturing apparatus of the strand foam of polyurethane according to the preferred embodiment of the present invention,

Figure 10 is a side view of the guide portion in the continuous manufacturing apparatus of a strand foam of polyurethane according to a preferred embodiment of the present invention,

11 is a view showing the adjustment bolt of the angle adjustment member in the continuous manufacturing apparatus of a strand foam of polyurethane according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals are used for components that perform the same functions in FIGS. 6 to 11. On the other hand, in the drawings and detailed description, detailed descriptions and illustrations of elements that are not directly related to the technical features of the present invention are omitted, and only the technical structures related to the present invention are briefly shown or Explained.

Referring to Figures 6 to 11, the continuous manufacturing apparatus 100 of the polyurethane foam according to a preferred embodiment of the present invention is provided with a mixing head 210 for mixing the raw material, and discharging the foaming liquid The supply unit 200, the transfer unit 300 for transferring the foamed liquid discharged through the mixing head 210, and the upper portion of the foamed liquid discharged through the mixing head 210 to be pressed to be transferred by the transfer unit 300 It comprises a guide portion (10). In a preferred embodiment of the present invention, the supply part 200, the transfer part 300, and the guide part 10 are installed on the frame 110 installed on the ground, and the frame 110 has one vertical bar and one horizontal bar combined with each other. Let's make the frame.

The supply unit 200 is a release paper supply unit wound on a plurality of rollers 231 installed on the frame 110 and the foaming liquid supply unit 220 for mixing the raw materials and discharging the foaming liquid through the mixing head 210 (230).

The release paper supply unit 230 includes a first release paper supply unit 240 and a first release paper supply unit 240 through which the foaming liquid discharged through the mixing head 210 of the foaming liquid supply unit 220 is discharged to the upper portion and transferred to the transfer unit 300. 240 is installed on the upper side, the second release paper supply unit 250 to be in close contact with the guide member 20 of the guide portion 10 to press the upper portion of the foaming liquid, and the foaming liquid transferred by the conveying portion 300 It comprises a side release paper supply unit 260 formed to surround the side.

The conveying part 300 is for conveying the foamed foamed liquid to the upper surface of the second release paper supply part 250 and includes a conveyor belt 310 installed on the frame 110.

On the other hand, since the supply unit 200 and the transfer unit 300 in the continuous manufacturing apparatus 100 of the polyurethane foam foam according to the preferred embodiment of the present invention can be variously installed on the frame 110, detailed description is omitted, and features It will be described mainly with the denier guide portion 10. And, in the present invention, the foaming liquid is a mixed pressure liquid discharged through the mixing head 210, and it is a foam that is formed by being solidified in the process of transferring the mixed pressure liquid. Those in the field will know.

The guide portion 10 is of a block shape on the upper surface of the foam formed by the foaming liquid is hardened when transported by the transfer unit 300 by pressing the upper portion of the foamed liquid discharged through the mixing head 210 of the supply unit 200 To prevent the curved surface is formed, the guide member 20 for pressing the upper portion of the foamed liquid discharged through the mixing head 210, and the guide member 20, is connected, and adjusts the angle of the guide member 20 It comprises an angle adjustment member 30 for fixing, and fixed to the frame 110, the movable member 40 for moving the angle adjustment member 30 up and down.

The guide member 20 is made of a rectangular plate shape, a coupling plate coupled to the pressing plate 23 for pressing the upper portion of the foaming liquid, the pressing plate 23, and the fixture 35 of the angle adjusting member 30 (22).

On the other hand, the guide member 20 is composed of a plurality of adjacent guide member 20 is connected by a connecting member 21, the rotation link 33 of the angle adjustment member 30 and the adjustment bolt of the angle adjustment member 30 The angle is adjusted by adjusting the length of (34). In the preferred embodiment of the present invention, the connecting member 21 is composed of a hinge, but this is only one embodiment and may be connected in various ways.

The angle adjusting member 30 is for adjusting the angle of the guide member 20, and the rotating rod 32 in the longitudinal direction rotated by the actuator 31, and one side is rotatably coupled on the rotating rod 32 Link 33, one side is coupled on the rotational link 33, a plurality of adjustment bolts 34 whose length is adjusted by forward or reverse rotation, and one side is coupled to the other side of the adjustment bolt 34, It comprises a fastener 35 to which the guide member 20 is fixed on the other side. The actuator 31 is composed of a cylinder, and is installed on a fixed profile 311 fixed to the coupling profile 46 of the movable member 40, and a drive link coupled to the end of the piston rod of the actuator 31 312 and the rotating rod 32 are coupled, the rotating rod 32 is rotated by the driving of the actuator 31.

The rotating rod 32 is coupled to the actuator 31 on the center side, the rotating rod 32 is rotated by the driving of the actuator 31. Then, the rotating rod 32 is fixed to the fastener 36 having bearings at both ends, and the fastener 36 is fixed to the coupling profile 46 of the movable member 40.

Rotating link 33 is one side is coupled to both ends of the rotating rod 32, the other side is formed in the diagonal direction of the upper side.

The adjustment bolt 34 is composed of a fastener 342 that is screwed on both sides of the body 341 and the body 341 as shown in FIG. 11, and when the body 341 is rotated to one side, the fastener 342 ) Moves to the outside, and when the body 341 is rotated to the other side, the fastener 342 is configured to move inward. The adjustment bolt 34 is adjusted in length by rotation of the body 341 so that the angle of the pressing plate 23 of the guide member 20 can be adjusted. That is, since the guide member 20 is connected to each other by the connecting member 21, when the fastener 342 moves to the outside or inside due to the rotation of the body 341, the guide member (centering around the connecting member 21) The pressing plate 23 of 20) is rotated so that the angle is adjusted.

In the present invention, the plurality of adjustment bolts 34 are composed of three, and are configured to be coupled to the lower end, the middle end, and the upper end of the rotation link 33. At this time, the adjustment bolt 34a coupled to the lower end of the rotation link 33 has a shorter length than the adjustment bolt 34b coupled to the middle section, and the adjustment bolt 34b coupled to the middle section is coupled to the upper section It is configured to have a shorter length than the adjustment bolt (34c).

The angle of the guide member coupled to the angle adjusting member having such a configuration can be adjusted according to the amount and density of the foamed liquid discharged from the mixing head 210 of the supply unit 200, but preferably the angle adjusting member 30 ) The pressing plate 23 of the guide member 20 coupled to the adjustment bolt 34a coupled to the lower end of the link has an angle of 5 ° with respect to the horizontal direction, and is coupled to the adjustment bolt 34b coupled to the middle section The pressing plate 23 of the guide member 20 has an angle of 30 ° with respect to the horizontal direction, and the pressing plate 23 of the guide member 20 coupled to the adjustment bolt 34c coupled to the upper end portion is 45 with respect to the horizontal direction. It is desirable to have an angle of °.

The movable member 40 is for moving the guide member 20 and the angle adjusting member 30 up and down according to the density of the foaming liquid and the amount of foaming, and a fixture 41 fixed on the frame 110, A jack screw shaft 43 connected to a fixture 41 through a bearing and having a handle 42 formed at one end thereof, a jack screw 44 formed on the jack screw shaft 43, and a jack screw 44 ) Is coupled to the lower portion of the coupling plate 45, the coupling plate 45 is coupled, the angle adjustment member 30, the fastener of the coupling portion 46 is made to include.

On the other hand, the pressing plate 23 of the guide member 20 coupled to the lower end of the adjustment bolt 34 of the angle adjusting member 30 is connected to one side of the coupling profile 46 by the connecting member 21.

When the movable member 40 rotates the handle 42 to one side, the jack screw shaft 43 rotates, and the jack screw 44 moves vertically by the rotation of the jack screw shaft 43. Due to this, the coupling plate 45 and the coupling profile 46 are raised so that the guide member 20 and the angle adjusting member 40 are raised.

According to the apparatus for continuously producing a strand foam of polyurethane according to the present invention, a polyurethane reactive mixture is coated on a rotating conveyor belt, and when foamed to form a strand foam, the height and height are determined according to the amount and density of the supplied foam liquid. By forming the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that it is suitable for use in block foams such as mattresses, mats, or architectural panels by cutting the molded foam. It has the effect that all the six sides are formed into a smooth flat shape.

As described above, although the continuous manufacturing apparatus for the strand foam of polyurethane according to the preferred embodiment of the present invention is illustrated according to the above description and drawings, this is merely an example and is not departed from the technical spirit of the present invention. It will be well understood by those skilled in the art that various changes and modifications are possible within.

According to the features of the present invention for achieving the above object, the raw material is mixed, the supply unit 200 having a mixing head 210 for discharging the foaming liquid, and is discharged through the mixing head 210 Strand of polyurethane comprising a transfer unit 300 for transferring the foaming liquid, and a guide portion 10 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 to be transferred by the transfer unit 300 In the apparatus 100 for continuously manufacturing a foam, the guide part 10 includes a guide member 20 for pressing an upper portion of the foamed liquid discharged through the mixing head 210; It is connected to the guide member 20, and an angle adjusting member 30 for adjusting the angle of the guide member 20; It is fixed to the frame 110, and includes an up-and-down moving member 40 for moving the angle adjustment member 30 up and down is in the form for the practice of the invention.

In the apparatus for continuously producing a strand foam of polyurethane according to the present invention, the angle adjusting member 30 includes a rotating rod 32 in the longitudinal direction rotated by an actuator 31; A rotating link 33, which is rotatably coupled on one side of the rotating rod 32; A plurality of adjustment bolts 34, one side of which is coupled on the rotation link 33 and whose length is adjusted by forward or reverse rotation; One side is coupled to the other side of the adjustment bolt 34, the other side comprises a fixture 35 to which the guide member 20 is fixed to form a form for the practice of the invention.

And in the continuous manufacturing apparatus of the strand foam of the polyurethane according to the present invention, the plurality of adjustment bolts 34 are combined to have different lengths on the rotation link 33, which is coupled to the lower portion of the rotation link 33 The adjustment bolt 34 is formed to have a shorter length than the adjustment bolt 34 coupled to the upper portion of the embodiment.

In addition, in the continuous manufacturing apparatus for a strand foam of polyurethane according to the present invention, the guide member 20 is provided in plural so as to be coupled to a fixture 35 coupled to a plurality of adjustment bolts 34 of the angle adjustment member 30. It is configured, the adjacent guide member 20 is connected by a connecting member 21 to practice the invention that the angle is adjusted by the rotation of the rotation link 33 or the length adjustment of the adjustment bolt 34 It should be made for.

In the apparatus for continuously producing a strand foam of polyurethane according to the present invention, the guide member 20 includes a coupling hole 22 coupled to a fixture 35 of the angle adjusting member 30; In the form for the practice of the invention, it includes a pressing plate 23 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 and coupled to the coupling port 22.

And in the continuous manufacturing apparatus of the strand foam of the polyurethane according to the present invention, the movable member 40 is fixed to the frame 41 is formed on the frame 110 is formed spaced apart; A jack screw shaft 43 connected to the fixture 41 through a bearing and having a handle 42 at one end thereof; A jack screw 44 formed on the jack screw shaft 43; A coupling plate 45 coupled to a lower portion of the jack screw 44; It is to be coupled to the lower portion of the coupling plate 45, the angle adjustment member 30 includes a coupling profile 46 to be coupled to form for the practice of the invention.

Therefore, when forming a block foam by a continuous manufacturing apparatus of a conventional strand foam of polyurethane, as shown in FIG. 2, the upper surface of the foam 6 is convexly raised to the top like a crown shape. Since the shape of is not formed, it is expected to be widely used in the industry in that it has a high economical effect because there is no part to remove the convexly raised curved surface.

Claims

Mixing the raw material, the supply unit 200 having a mixing head 210 for discharging the foaming liquid, and a conveying unit 300 for transferring the foaming liquid discharged through the mixing head 210, and the mixing In the continuous manufacturing apparatus 100 of a strand foam of polyurethane, including a guide portion 10 to be pressed by the transfer unit 300 by pressing the upper portion of the foamed liquid discharged through the head 210,

The guide portion 10 includes a guide member 20 for pressing the upper portion of the foamed liquid discharged through the mixing head 210;

It is connected to the guide member 20, and an angle adjusting member 30 for adjusting the angle of the guide member 20;

A device for continuous production of a strand foam of polyurethane, which is fixed to the frame 110 and includes a movable member 40 for vertically moving the angle adjusting member 30.
According to claim 1,

The angle adjustment member 30 includes a rotating rod 32 in the longitudinal direction that is rotated by the actuator 31;

A rotating link 33, which is rotatably coupled on one side of the rotating rod 32;

A plurality of adjustment bolts 34, one side of which is coupled on the rotation link 33 and whose length is adjusted by forward or reverse rotation;

A device for continuous production of a strand foam of polyurethane, characterized in that one side is coupled to the other side of the adjustment bolt 34, and includes a fixture 35 to which the guide member 20 is fixed to the other side.
According to claim 2,

The plurality of adjustment bolts 34 are coupled to have different lengths on the rotation link 33, the adjustment bolt 34 coupled to the lower portion of the rotation link 33, the adjustment bolt 34 coupled to the upper portion Compared to the continuous production device of a polyurethane foam, characterized in that formed to have a shorter length.
The method of claim 3,

The guide member 20 is composed of a plurality to be coupled to a fixture 35 coupled to a plurality of adjustment bolts 34 of the angle adjustment member 30, the adjacent guide member 20 is a connecting member 21 It is connected by the rotation of the rotating link 33 or the adjusting bolt 34, the angle is adjusted by adjusting the length of the polyurethane foam continuous production device of the foam.
The method of claim 4,

The guide member 20 includes a coupling hole 22 that is coupled to the fixture 35 of the angle adjustment member 30;

A continuous manufacturing apparatus for a strand foam of polyurethane, characterized in that it comprises a pressing plate (23) for pressing the upper portion of the foaming liquid discharged through the mixing head (210) and coupled to the coupling hole (22).
According to claim 1,

The movable member 40 is fixed to the fixed frame 41 on the frame 110 formed with;

A jack screw shaft 43 connected to the fixture 41 through a bearing and having a handle 42 at one end thereof;

A jack screw 44 formed on the jack screw shaft 43;

A coupling plate 45 coupled to a lower portion of the jack screw 44;

It is coupled to the lower portion of the coupling plate 45, the angle adjustment member 30 is a continuous production device of a polyurethane foam, characterized in that it comprises a coupling profile (46).