Manufacturing device of filament three-dimensional combination body

Abstract

The invention provides a manufacturing device capable of forming a more uniform filament three-dimensional combined body under the condition that the bonding strength at the welding point of the melted filaments is not reduced. A manufacturing apparatus includes: a molten filament supply unit that discharges a molten filament group downward; a slide having a slide inclined plate that receives the molten filaments at the ends in the thickness direction of the molten filament group and is biased in the direction in which the thickness of the molten filament group decreases; a cooling water supply unit for supplying cooling water to the chute inclined plate; in the manufacturing device of the filament three-dimensional combined body, a plurality of grooves are formed in the upper surface of a slide way inclined plate, the width of each of the plurality of grooves is more than 0.1 mm and less than 3.0 mm, the depth of each of the plurality of grooves is more than 0.1 mm and less than 3 mm, the width of each of the plurality of grooves is more than 0.1 mm and less than 3.0 mm, and the width of each of the plurality of grooves is more than 0.1 mm and less than 3.0 mm. The interval between adjacent grooves is 1 mm or more and 7 mm or less.

Description

Technical Field

[0001] The present invention relates to a manufacturing device for a three-dimensional filament combination body which can be used as a cushioning raw material for a mattress or a pillow. Background Art

[0002] As a cushioning material that overcomes the disadvantages of metal springs or urethane foams that require time to recycle, a three-dimensional filament bond (three-dimensional network structure) obtained by three-dimensionally welding filaments containing thermoplastic elastomer has attracted much attention. This cushioning material is not only easy to recycle, but also has the advantages of being not easily damp and hot and washable.

[0003] As a method for manufacturing a three-dimensional combination of filaments, for example, Patent Document 1 describes the following method: a molten filament group (a linear aggregate of a thermoplastic resin in a molten state) comprising a plurality of molten filaments flowing downward in a vertical direction is dropped into cooling water, and a molten filament ring is formed by utilizing the buoyancy of water. The molten filaments are brought into contact with each other by utilizing the deflection during the formation of the ring, and the contact points are welded and bonded to manufacture a three-dimensional combination of filaments (a three-dimensional network structure).

[0004] In addition, Patent Document 1 also describes the following: In order to make the thickness of the three-dimensional filament combination constant, a pair of slides are provided that are inclined from both ends of the molten filament group in the thickness direction toward the center of the molten filament group in the thickness direction, and in order to spread cooling water over the entire surface of the slide, the slide surface is covered with a water-permeable sheet such as bleached cloth, and cooling water is supplied to the water-permeable sheet, thereby forming a cooling water layer over the entire surface of the slide. By spreading the cooling water, the effect of preventing the molten filaments from adhering to the slide surface can be obtained.

[0005] However, the method of covering the slide surface with a water-permeable sheet has the disadvantage of causing the following undesirable conditions, namely, wrinkles on the water-permeable sheet, foreign matter (rust, etc.) adhering to the water-permeable sheet, or wear and tear of the water-permeable sheet due to long-term manufacturing. As a method for overcoming the above disadvantages, Patent Document 2 describes a method of roughening the slide surface by sandblasting, thereby forming a cooling water layer on the slide surface without using a water-permeable sheet.

[0006] Fig.11 This is a conceptual diagram showing a state in which the surface 531s of the slideway 531 is roughened by sandblasting. As shown in this figure, the surface 531s has irregularities. Fig.12 The following state is shown: the cooling water supplied to the surface 531s of the slideway 531 is retained or decelerated by the projections and recesses, so that the cooling water film W is formed.

[0007] [Prior art literature]

[0008] [Patent Document]

[0009] Patent Document 1: Japanese Patent No. 4181878

[0010] Patent Document 2: Japanese Patent No. 4966438 Summary of the invention

[0011] [Problems to be solved by the invention]

[0012] However, it is difficult to keep the depth and width of the recesses constant in all areas of the slide surface during sandblasting, and the inclination angle of the recesses is small, so the ability to retain or decelerate cooling water is low. When there is little cooling water, it is difficult to form a uniform cooling water film. Even locally, the ability to retain or decelerate cooling water in areas with shallow recesses (relatively convex areas) decreases, so even if cooling water is supplied to the slide surface, it sometimes flows down without forming a cooling water film due to the surface tension of the water. As a result, there are problems such as the following: the molten filaments temporarily adhere to the slide surface where no cooling water film is formed, and the speed of movement on the slide surface becomes irregular, so that the three-dimensional combination of the filaments becomes uneven.

[0013] In addition, if the supply of cooling water is increased in order to reliably form a cooling water film on the slide surface, the molten filaments will be cooled and the bonding strength at the fusion points of the molten filaments will decrease. In addition, if the entire slide surface is roughened in order to retain or slow down the cooling water in the shallow concave area, the molten filaments will find it difficult to slide on the slide surface, so there are paradoxical issues such as the molten filaments being easily attached temporarily.

[0014] In view of the above problems, an object of the present invention is to provide an apparatus for producing a three-dimensional bonded filament body capable of forming a more uniform three-dimensional bonded filament body without reducing the bonding strength at the fusion points of the molten filaments.

[0015] [Technical means to solve the problem]

[0016] The manufacturing device of the filament three-dimensional combination of the present invention comprises: a molten filament supply part, which discharges a molten filament group including a plurality of molten filaments downward in the vertical direction; a slide, which has a slide inclined plate, the slide inclined plate receives the molten filaments at the ends of the molten filament group in the thickness direction, and is biased in the direction of reducing the thickness of the molten filament group; a cooling water supply part, which supplies cooling water to the slide inclined plate; and a fusion bonding forming part, which fusion bonds the contact points while entangles the molten filaments three-dimensionally, and the manufacturing device of the filament three-dimensional combination is set as follows: a plurality of grooves are formed on the upper surface of the slide inclined plate, the width of each of the plurality of grooves is greater than 0.1 mm and less than 3.0 mm, the depth of each of the plurality of grooves is greater than 0.1 mm and less than 3 mm, and the interval between adjacent grooves is greater than 1 mm and less than 7 mm. According to this structure, a more uniform filament three-dimensional combination can be formed without reducing the bonding strength at the fusion points of the molten filaments.

[0017] As the structure, more specifically, the plurality of grooves may be formed to extend in parallel at equal intervals. Also, as the structure, more specifically, the plurality of grooves may be formed to extend at an angle of 30 degrees or more and 60 degrees or less relative to the maximum inclination direction of the slideway inclined plate. Also, as the structure, more specifically, the cross-section of each of the plurality of grooves may be a quadrilateral.

[0018] As the structure, more specifically, it can also be a structure in which a hydrophilic polymer is coated or buried in all or part of the plurality of grooves. In addition, as the structure, more specifically, it can also be a structure as follows: the plurality of grooves are formed to cover the entire area of ​​the upper surface of the slide inclined plate that receives the molten filaments, and the cooling water supply part is configured to supply the cooling water to all of the grooves covering the entire area.

[0019] [Effects of the Invention]

[0020] According to the apparatus for producing a three-dimensional bonded filament body of the present invention, a more uniform three-dimensional bonded filament body can be formed without reducing the bonding strength at the fusion points between the molten filaments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a conceptual diagram of the manufacturing apparatus of the three-dimensionally bonded filament body according to the first embodiment.

[0022] Figure 2 yes Figure 1 The arrow view of the AA' section of the manufacturing device shown.

[0023] Figure 3 This is a bottom view of the nozzle portion of the first embodiment.

[0024] Figure 4 It is a perspective view of the slideway according to the first embodiment.

[0025] Figure 5 yes Figure 1 A magnified view of the slide perimeter.

[0026] Figure 6 yes Figure 5 An enlarged arrow view of the BB' section of the slide shown.

[0027] Figure 7 It means being trapped in Figure 6 Conceptual diagram of trapped water in the grooves of the slide and the cooling water film formed on the surface of the slide.

[0028] Figure 8 It is a perspective view of a chute of the manufacturing apparatus according to the second embodiment.

[0029] Fig. 9 It is an explanatory diagram of a modified example in which the cross-sectional shape of the groove is changed.

[0030] Fig.10 It is an explanatory diagram of another modified example in which the cross-sectional shape of the groove is changed.

[0031] Fig.11 This is a conceptual diagram showing a state where the surface of a slideway is roughened by sandblasting.

[0032] Fig.12 This is a conceptual diagram showing a state where a cooling water film is formed on the surface of the slideway. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the up and down, left and right, and front and back directions (directions orthogonal to each other) in the following description are as shown in the drawings. The directions are set for convenience only, the vertical direction is the up and down direction, and the direction in which the pair of slideways 31 and 32 described later (the surfaces of the slideway vertical plate 31b and the slideway vertical plate 32b face each other) is the front and back direction.

[0034] 1. First Implementation

[0035] First, a first embodiment of the present invention will be described. Figure 1 This is a conceptual diagram of a manufacturing apparatus 1 for a three-dimensionally bonded filament body according to a first embodiment of the present invention. Figure 2 yes Figure 1 The arrow view of the AA' section of the manufacturing device 1 is shown.

[0036] The manufacturing device 1 of the three-dimensional combination of filaments includes a molten filament supply part 10, a welding and forming part 20, and a pair of slides 31, 32 and a cooling water supply part 41, 42. The molten filament supply part 10 discharges a molten filament group MF including a plurality of molten filaments with a diameter of 0.5mm to 3mm in a vertically downward direction; the welding and forming part 20 entangles the molten filament group MF three-dimensionally and welds the contact points, and then cools and solidifies to form a three-dimensional combination of filaments; the pair of slides 31, 32 receive the molten filaments at the ends in the thickness direction (the left and right ends in the front-to-back direction) of the molten filament group MF, and are biased in the direction in which the thickness of the molten filament group MF becomes thinner and smaller; the cooling water supply part 41, 42 supplies cooling water to the upper parts of the slides 31, 32 respectively.

[0037] The molten filament supply unit 10 includes a pressurized melting unit 11 (extruder) and a filament discharge unit 12 (die). The pressurized melting unit 11 includes a material input unit 13 (hopper), a screw 14, a screw motor 15 for driving the screw 14, a screw heater 16, and a plurality of temperature sensors (not shown), and has a barrel 11a formed therein for conveying the thermoplastic resin supplied from the material input unit 13 while being heated and melted by the screw heater 16.

[0038] The screw 14 is rotatably accommodated in the barrel 11a. A barrel discharge port 11b for discharging the thermoplastic resin toward the filament discharge unit 12 is formed at the downstream end of the barrel 11a. The heating temperature of the screw heater 16 is controlled based on a detection signal of a temperature sensor provided in the molten filament supply unit 10, for example.

[0039] The filament discharge unit 12 includes a nozzle unit 17 , a die heater 18 , and a plurality of temperature sensors (not shown), and has a flow guide path 12 a formed therein for guiding the molten thermoplastic resin discharged from the barrel discharge port 11 b to the nozzle unit 17 .

[0040] The nozzle portion 17 is a thick metal plate having a substantially rectangular shape and having a plurality of openings formed therein, and is disposed at the lower portion of the filament discharge portion 12 corresponding to the most downstream portion of the flow guide path 12a. Figure 3 The plurality of openings formed in the nozzle portion 17 will be described.

[0041] The mold heater 18 is provided with a plurality of (in Figure 2 In the example shown, there are six die heaters 18a to 18f (6 in total), which heat the filament discharge section 12. The heating temperature of the die heater 18 is controlled based on a detection signal of a temperature sensor provided in the filament discharge section 12, for example.

[0042] As thermoplastic resins that can be used as materials for three-dimensional combinations of filaments, for example, polyolefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, polyamide resins such as nylon 66, polyvinyl chloride resins and polystyrene resins, or thermoplastic elastomers such as styrene elastomers, vinyl chloride elastomers, olefin elastomers, urethane elastomers, polyester elastomers, nitrile elastomers, polyamide elastomers, and fluorine elastomers can be used.

[0043] The thermoplastic resin supplied from the material input section 13 is heated and melted in the barrel 11a, extruded, for example, by the screw 14, and supplied as molten thermoplastic resin from the barrel discharge port 11b to the flow guide 12a of the filament discharge section 12. Then, a molten filament group MF including a plurality of molten filaments is discharged in a manner parallel to each other downward from each of the plurality of nozzles of the nozzle section 17.

[0044] The fusion bonding forming section 20 includes a cooling water tank 23, a pair of conveyor belts 24a, 24b, and a plurality of conveyor rollers 25a to 25h. The cooling water tank 23 is a tank for storing cooling water in advance. A pair of conveyor belts 24a, 24b, and a plurality of conveyor rollers 25a to 25h are arranged inside the cooling water tank 23. The pair of conveyor belts 24a, 24b and the plurality of conveyor rollers 25a to 25h are driven by a driving motor not shown.

[0045] Figure 3 1 is a bottom view of the nozzle section 17. A plurality of openings (nozzle group 19) for discharging a molten filament group are formed in the nozzle section 17. In the example of the present embodiment, the cross-sectional shape of the opening is set to a circle with an inner diameter of 1 mm, and the distance (pitch) between adjacent nozzles is set to 10 mm. However, based on the specifications of the three-dimensional filament combination to be manufactured, the shape of each nozzle of the nozzle group 19, the inner diameter of each nozzle, the interval between adjacent nozzles, and the configuration pattern of each nozzle can be appropriately adjusted.

[0046] Figure 4 yes Figure 1 A schematic perspective view of a pair of slideways 31, 32 is shown. Figure 5 yes Figure 1 A magnified view of the slide perimeter. Figure 6 yes Figure 5 The arrow-viewed enlarged view of the BB' section of the slide 31 shown. In addition, in the present embodiment, the rear slide 31 and the front slide 32 are symmetrical about a virtual plane orthogonal to the front-rear direction, and play the same role. In the following description of the slide 31 and the slide 32, sometimes one of the slide 31 and the slide 32 is described, and the description of the other is omitted.

[0047] A pair of slides 31, 32 have a flat slide inclined plate 31a, a slide inclined plate 32a, which are respectively formed to be downwardly inclined (inclined more downward as moving inward in the front-to-back direction), and a flat slide vertical plate 31b, a slide vertical plate 32b extending downward in the vertical direction from the lower ends of the slide inclined plate 31a, the slide inclined plate 32a, and are arranged with a specified gap between the front and the back.

[0048] On the upper surfaces of the slide inclined plates 31a and 32a, a plurality of grooves 31c and 32c are formed at equal intervals in a manner extending upward in the direction of the maximum inclination of the slide inclined plates 31a and 32a, respectively. In this embodiment, the plurality of grooves 31c and any of the plurality of grooves 32c are formed so that each groove extends in parallel at equal intervals. In addition, the so-called maximum inclination direction of the slide inclined plates 31a and 32a is the direction in which the inclination of the upper surfaces of the slide inclined plates 31a and 32a relative to the horizontal plane becomes the largest. In this embodiment, it coincides with the direction in which the portion (line segment) of the virtual plane orthogonal to the left and right direction intersects with the upper surfaces of the slide inclined plates 31a and 32a.

[0049] In addition, in the present embodiment, a plurality of grooves 31d and 32d are formed at equal intervals on the surfaces of the slideway vertical plate 31b and the slideway vertical plate 32b that face each other so as to extend in the vertical direction. The plurality of grooves 31d extend in parallel, and are connected to the plurality of grooves 31c at the upper end, and the lower end reaches the edge of the lower side of the slideway vertical plate 31b. The plurality of grooves 32d extend in parallel, and are connected to the plurality of grooves 32c at the upper end, and the lower end reaches the edge of the lower side of the slideway vertical plate 32b.

[0050] Regarding the size or shape of the grooves 31c, 32c, 31d, and 32d, in the present embodiment, the width of all the grooves (the size in the left-right direction) is set to be greater than 0.1 mm and less than 3.0 mm, the depth of all the grooves is set to be greater than 0.1 mm and less than 3 mm, and the intervals between adjacent grooves are all set to be greater than 1 mm and less than 7 mm. In addition, the width of the grooves 31c, 32c, 31d, and 32d is further preferably in the range of 0.5 times to 1.5 times the diameter of the molten filaments discharged from the nozzle portion 17. When the width of the grooves 31c, 32c, 31d, and 32d is less than the range, the amount of water entering the grooves becomes relatively less relative to the amount of the molten filaments supplied from the nozzle portion 17, and the water evaporates easily. On the other hand, when the width of the grooves 31c, 32c, 31d, and 32d is greater than the range, the molten filaments fall into the grooves, and it is difficult to form a cooling water film described later. The cross-sections of the grooves 31c, 32c, 31d, and 32d (cross-sections when cut along a plane perpendicular to the direction in which the grooves extend) are as follows: Figure 6 As shown, all the grooves are formed into a quadrilateral (a rectangle or a square in the example of the present embodiment). However, in the quadrilateral, the upper side is the opening surface of the groove. In the example of the present embodiment, the cross-sectional shape and size of all the grooves 31c, 32c, 31d, and 32d are the same.

[0051] In the present embodiment, the slideway inclined plates 31a and 32a and the slideway vertical plates 31b and 32b are formed in a flat plate shape, but may also be formed in a curved surface shape. In addition, in the present embodiment, a pair of slideways 31 and 32 are arranged with a predetermined gap, but may also be arranged in the following form: the slideways 31 and 32 are integrated in a manner that a quadrilateral or elliptical space is formed when viewed from above.

[0052] In addition, the cooling water supply unit 41 is configured to supply cooling water without omission to the vicinity of the upper end of the entire area in the left-right direction of the upper surface of the slide inclined plate 31a. The cooling water supply unit 42 is configured to supply cooling water without omission to the vicinity of the upper end of the entire area in the left-right direction of the upper surface of the slide inclined plate 32a. The cooling water supply unit 41 and the cooling water supply unit 42 continuously supply cooling water to the upper surface of the slide inclined plate 31a so as to stably form a cooling water film described later. In addition, as the cooling water supplied to the slide inclined plate 31a by the cooling water supply unit 41 and the cooling water supply unit 42, for example, water supplied from the outside of the manufacturing device 1 can be used, and a part of the cooling water in the cooling water tank 23 can also be used.

[0053] Figure 7 It means being trapped in Figure 6A conceptual diagram of the trapped water in the plurality of grooves 31c and the cooling water film W formed on the surface (upper surface) of the slideway inclined plate 31a. When cooling water is supplied to the upper surfaces of the slideway inclined plates 31a and 32b by the cooling water supply parts 41 and 42, a portion of the cooling water enters the plurality of fine grooves 31c and 32c formed on the upper surfaces of the slideway inclined plates 31a and 32b.

[0054] The flow rate of the cooling water entering the plurality of grooves 31c and 32c is significantly slowed down, and becomes retained water. The cooling water supply unit 41 and the cooling water supply unit 42 further supply cooling water, and the cooling water flowing down the upper surface of the slideway inclined plate 31a and the slideway inclined plate 32b is blocked by the surface tension with the retained water in the plurality of grooves 31c and 32c, so that a film is formed between two adjacent grooves, and they are connected to each other to form a uniform cooling water film on the entire upper surface of the slideway inclined plate 31a and the slideway inclined plate 32b.

[0055] In addition, since bubbles in the grooves 31c and 32c are not discharged immediately after the production apparatus 1 is put into operation, bubbles may be driven out from the plurality of grooves 31c and 32c by supplying water vapor toward the chute inclined plates 31a and 32a before the production apparatus 1 is put into operation. In addition, a hydrophilic polymer such as polyvinyl alcohol may be coated or buried in all or part of the plurality of grooves 31c and 32c.

[0056] The molten filament group MF discharged from the nozzle portion 17 is adjusted in thickness (forward and backward dimensions) by the previously described slides 31 and 32, and is bent by the buoyancy of the cooling water in the cooling water tank 23, and each filament therein forms a random loop. The random loops are entangled with adjacent random loops in a three-dimensional molten state, and the contact points are fused and bonded to form a three-dimensional filament combination.

[0057] Then, the combined body is conveyed by a pair of conveyor belts 24a, 24b and a plurality of conveying rollers 25a to 25h while being cooled by the cooling water in the cooling water tank 23, and thus discharged as a three-dimensional filament combined body 3DF outside the cooling water tank 21. In this way, a three-dimensional filament combined body 3DF can be manufactured.

[0058] As described above, the manufacturing device 1 includes: a molten filament supply part 10, which discharges a molten filament group MF including a plurality of molten filaments downward in a vertical direction; a slide 31, a slide 32, which has a slide inclined plate 31a, a slide inclined plate 32a, and the slide inclined plate 31a, the slide inclined plate 32a receives the molten filaments at the ends of the molten filament group MF in the thickness direction (front and back direction), and is biased in the direction in which the thickness of the molten filament group MF decreases; a cooling water supply part 41, a cooling water supply part 42, which supplies cooling water to the slide inclined plate 31a, the slide inclined plate 32a; and a weld bonding forming part 20, which welds the contact points while entangles the molten filaments three-dimensionally.

[0059] Furthermore, a plurality of grooves 31c and 32c are formed on the upper surfaces of the chute inclined plates 31a and 32a of the manufacturing device 1. Since a plurality of fine grooves are formed at predetermined intervals on the upper surfaces of the chute inclined plates 31a and 32a, the upper surfaces of the chute inclined plates 31a and 32a are formed into a uniform and fine concavo-convex structure, and a thin film of cooling water can be formed on the entire upper surfaces of the chute inclined plates 31a and 32a by the surface tension of water.

[0060] A portion of the cooling water supplied to the slideway inclined plate 31a, 32a is reliably retained (retained or decelerated) in the groove 31c, 32c, while the cooling water supplied to the upper portion of the slideway inclined plate 31a, 32a and flowing down the upper surface of the slideway inclined plate 31a, 32a is blocked by the surface tension with the cooling water retained in the groove, thereby forming a film between two adjacent grooves. Therefore, a thin film of cooling water can be reliably formed on the entire upper surface of the slideway inclined plate 31a, 32a. As a result, the molten filaments can be more reliably prevented from adhering to the surface of the slideway inclined plate 31a, 32a, thereby forming a more uniform three-dimensional combination of filaments.

[0061] In order to reliably and stably form a thin film of cooling water on the upper surface of the slideway inclined plate 31a and the slideway inclined plate 32a, it is important to appropriately set the width, depth and interval of the plurality of grooves 31c and 32c. In this regard, the applicant conducted an investigation and discussion, and found that it is appropriate to set the width of each of the plurality of grooves 31c and 32c to be greater than 0.1mm and less than 3.0mm, set the depth of each of the plurality of grooves 31c and 32c to be greater than 0.1mm and less than 3mm, and set the interval between adjacent grooves 31c and 32c to be greater than 1mm and less than 7mm, so such settings are also made in the manufacturing device 1 of this embodiment. In addition, the width of each of the plurality of grooves 31c and 32c may be set to be greater than 0.1mm and less than 1.0mm, or may be set to be greater than 0.1mm and less than 0.5mm.

[0062] In addition, if the surface of the slide is covered with a water-permeable sheet, there is a concern that the water-permeable sheet may peel off. However, in the present embodiment, since the fine grooves are directly formed on the surface of the slide (the upper surface of the slide inclined plate 31a and the slide inclined plate 32a), such peeling will not occur, thereby ensuring stable performance during the long-term continuous manufacturing of the three-dimensional filament combination. In addition, in the present embodiment, it is not necessary to supply a large amount of cooling water to the slide inclined plate 31a and the slide inclined plate 32a in order to form a thin film of cooling water on the upper surface of the slide inclined plate 31a and the slide inclined plate 32a as a whole. Therefore, a uniform three-dimensional filament combination can be formed without reducing the bonding strength at the fusion point of the molten filaments.

[0063] In addition, in the present embodiment, the plurality of grooves 31c and the plurality of grooves 32c are formed to extend in parallel at equal intervals, so that a uniform cooling water film can be formed on the chute inclined plates 31a and 32a.

[0064] In addition, in the present embodiment, the plurality of grooves 31c and 32c are formed to cover the entire region of the upper surface of the slideway inclined plate 31a and the slideway inclined plate 32a that receives the molten filaments, and the cooling water supply parts 41 and 42 are configured to supply cooling water to all of the grooves 31c and the grooves 32c that cover the entire region. Thus, it is possible to more completely prevent the molten filaments from adhering to the slideway inclined plate 31a and the slideway inclined plate 32a.

[0065] In addition, in the present embodiment, the shape of the cross section of each of the plurality of grooves 31c and 32c is a quadrilateral, so even if the surface of the slideway inclined plate 31a and the slideway inclined plate 32a is worn due to long-term use, the width of the grooves 31c and the grooves 32c can be maintained constant. In addition, as previously described, hydrophilic polymers such as polyvinyl alcohol can also be coated or buried in all or part of the plurality of grooves 31c and 32c. Thus, the retention capacity of the trapped water is improved by the hydrophilic polymers in the plurality of grooves 31c and 32c, so that the evaporation of the trapped water in the grooves 31c and the grooves 32c caused by the heat of the high-temperature molten filaments exceeding the boiling point of water can be suppressed as much as possible. In addition, in the present embodiment, the depth of the plurality of grooves 31c and 32c is set to be uniform, but the depth of the plurality of grooves 31c and 32c can also be set to be uneven. Furthermore, within the scope of not impairing the effects of the present invention, a plurality of grooves 31c, 32c may be arranged in a straight line or in a curve, or a plurality of dimple-shaped depressions may be provided on the slideway inclined plates 31a, 32a.

[0066] 2. Second Implementation

[0067] Next, a second embodiment of the present invention is described. In addition, the second embodiment is basically the same as the first embodiment except for the form of the groove formed in the slideway. In the following description, the focus is on the description of matters different from the first embodiment, and the description of matters common to the first embodiment is sometimes omitted.

[0068] Figure 8 This is a perspective view of the slides 131 and 132 (corresponding to the slides 31 and 32 of the first embodiment) in the manufacturing device 1 of the second embodiment. The pair of slides 131 and 132 have flat slide inclined plates 131a and 132a respectively formed to be inclined downward (inclined downward as it moves inward in the front-rear direction), and flat slide vertical plates 131b and 132b extending downward in the vertical direction from the lower ends of the slide inclined plates 131a and 132a, and are provided with a predetermined gap.

[0069] A plurality of grooves 131c and 132c are formed on the upper surfaces of the slide inclined plates 131a and 132a at an angle of 30 degrees or more and 60 degrees or less relative to the maximum inclination direction of the slide inclined plates 131a and 132a, respectively. In the present embodiment, a plurality of grooves 131d and 132d are also formed on the surfaces of the slide vertical plates 131b and 132b facing each other at an angle of 30 degrees or more and 60 degrees or less relative to the vertical direction, respectively.

[0070] In the example of the present embodiment, for example, on the upper surface of the slide inclined plate 131a, a plurality of grooves 131c inclined at an angle θ (a predetermined angle of 30 degrees or more and 60 degrees or less) from the maximum inclination direction to one direction are arranged at equal intervals in the left-right direction, and a plurality of grooves 131c inclined at an angle θ from the maximum inclination direction to the other direction are arranged at equal intervals in the left-right direction. The grooves 131c inclined at an angle θ from the maximum inclination direction to one direction and the grooves 131c inclined at an angle θ to the other direction intersect each other at equal intervals.

[0071] In addition, in the slideway vertical plate 131b, a plurality of grooves 131d inclined at an angle θ from the vertical direction to one direction are arranged at equal intervals in the left-right direction, and a plurality of grooves 131d inclined at an angle θ from the vertical direction to the other direction are arranged at equal intervals in the left-right direction. The grooves 131d inclined at an angle θ from the vertical direction to one direction and the grooves 131d inclined at an angle θ to the other direction intersect each other at equal intervals. In addition, each of the plurality of grooves 131d is connected to each of the plurality of grooves 131c at the upper end, and the lower end reaches the edge of the lower side of the slideway vertical plate 131b.

[0072] Regarding the size or shape of the grooves 131c, 132c, 131d, and 132d, in the present embodiment, the width (dimension in the left-right direction) of all the grooves is set to be 0.1 mm or more and 3.0 mm or less, and the depth of all the grooves is set to be 0.1 mm or more and 3 mm or less. Thus, a thin film of cooling water can be reliably and stably formed on the upper surface of the slideway inclined plate 131a and the slideway inclined plate 132a, as in the case of the first embodiment. In addition, the width of the grooves 131c, 132c, 131d, and 132d can be set to be 0.1 mm or more and 1.0 mm or less, or can be set to be 0.1 mm or more and 0.5 mm or less. In addition, the shape of the cross section (cross section when cut by a plane perpendicular to the direction in which the grooves extend) of the grooves 131c, 132c, 131d, and 132d is the same as in the first embodiment, and all the grooves are formed into quadrilaterals (rectangular or square in the example of the present embodiment). However, in the quadrilateral, the upper side is the opening surface of the groove.

[0073] In addition, in the present embodiment, the grooves 131c, 132c, 131d, and 132d are formed to intersect at equal intervals, but may be formed not to intersect. In addition, the slideway inclined plates 131a and 132a and the slideway vertical plates 131b and 132b are formed in a flat plate shape, but may also be in a curved surface shape.

[0074] As described above, in the present embodiment, the grooves 131c and 132c are formed to be inclined at an angle of 30 degrees or more and 60 degrees or less relative to the maximum inclination direction of the chute inclined plates 131a and 132a. Therefore, even if the inclination angle of the chute inclined plates 131a and 132a is increased in order to facilitate the sliding of the molten filaments, the retained water retained in the grooves 131c and 132c can be prevented from flowing down.

[0075] 3. Others

[0076] The embodiments of the present invention are described above, but the structure of the present invention is not limited to the embodiments, and various changes can be made without departing from the scope of the invention. It should be understood that the technical scope of the present invention is represented by the claims rather than the description of the embodiments, and includes all changes within the meaning and scope equivalent to the claims.

[0077] Here, as an example of a modification of the above-mentioned embodiment, the following reference is made to Fig. 9 and Fig.10 Examples in which the cross-sectional shape of the groove formed in the chute is changed will be described. Note that these examples are equivalent to the manufacturing apparatus 1 of the first embodiment except for matters related to the cross-sectional shape of the groove of the chute.

[0078] Fig. 9 An example is shown in which the cross-sectional shape of the groove 31c is changed with respect to the slide inclined plate 31a. Fig. 9 In the example shown, a slideway inclined plate 231a (corresponding to the slideway inclined plate 31a of the first embodiment) in a slideway 231 (corresponding to the slideway 31 of the first embodiment) is formed with a groove 231c (corresponding to the groove 31c of the first embodiment).

[0079] exist Fig. 9 In the example shown, the cross-sectional shape of the groove 231c is formed into a V-shape, and the side surfaces of the groove 231c are respectively in contact at the ends, and are inclined in a manner that the closer to the surface of the slideway inclined plate 31a, the more outward. Even if the cross-sectional shape of the groove 231c is formed in this way, the same or comparable effect as that of the first embodiment can be obtained. In addition, the cross-sectional shape of the grooves of the front and rear slideway inclined plates in the slideway 231 can be formed into a V-shaped shape as described above, and the cross-sectional shape of the grooves of the front and rear slideway vertical plates in the slideway 231 can be formed into a V-shaped shape as described above.

[0080] Fig.10 Another example is shown in which the cross-sectional shape of the groove 31c is changed with respect to the slide inclined plate 31a. Fig.10 In the example shown, a slide inclined plate 331a (corresponding to the slide inclined plate 31a of the first embodiment) in a slide 331 (corresponding to the slide 31 of the first embodiment) is formed with a groove 331c (corresponding to the groove 31c of the first embodiment).

[0081] exist Fig.10 In the example shown, the cross-sectional shape of the groove 331c is formed into a U-shape, and no corner is provided in the formed portion of the groove 331c. Even if the cross-sectional shape of the groove 331c is formed in this way, the same or comparable effect as that of the first embodiment can be obtained. In addition, the cross-sectional shape of the grooves of the front and rear two slideway inclined plates in the slideway 331 can be formed into a V-shape as described above, and the cross-sectional shape of the grooves of the front and rear two slideway vertical plates in the slideway 331 can be formed into a V-shape as described above.

[0082] The embodiments described above are to be considered in all respects as illustrative rather than restrictive. It should be understood that the technical scope of the present invention is indicated by the claims rather than the description of the embodiments described above, and includes all modifications within the meaning and scope equivalent to the claims.

[0083] [Industrial Applicability]

[0084] The present invention can be used in a device for manufacturing a three-dimensional filament combination body.

[0085] [Explanation of Symbols]

[0086] 1: Apparatus for manufacturing three-dimensional filament composites

[0087] 10: Melt filament supply unit

[0088] 11: Pressurized melting section

[0089] 11a: Barrel

[0090] 11b: Barrel discharge port

[0091] 12: Filament discharge section

[0092] 12a: Diversion path

[0093] 13: Material input department

[0094] 14: Screw

[0095] 15: Screw motor

[0096] 16: Screw heater

[0097] 17: Nozzle

[0098] 18: Mold heater

[0099] 19: Nozzle group

[0100] 20: Welding forming part

[0101] 23: Cooling water tank

[0102] 24a, 24b: conveyor belt

[0103] 25a~25h: conveyor roller

[0104] 31, 32: Slide

[0105] 31a, 32a: Slideway inclined plate

[0106] 31b, 32b: Slideway plumb plate

[0107] 31c, 32c: Slots of the inclined slide plate

[0108] 31d, 32d: Slots of the vertical plate of the slideway

[0109] 41, 42: Cooling water supply unit

Claims

1. A manufacturing device for a three-dimensional combination of filaments, comprising: A molten filament supplying section discharges a molten filament group including a plurality of molten filaments downward in a vertical direction; A slide having a slide inclined plate, wherein the slide inclined plate receives the molten filaments at the ends of the molten filament group in the thickness direction and is biased toward a direction in which the thickness of the molten filament group decreases; a cooling water supply unit for supplying cooling water to the slideway inclined plate; and The fusion bonding forming part fuses the contact points while entangles the molten filaments three-dimensionally. The manufacturing device of the three-dimensional filament bonded body is characterized in that: A plurality of grooves are formed on the upper surface of the slideway inclined plate, and The width of each of the plurality of grooves is not less than 0.1 mm and not more than 3.0 mm, The depth of each of the plurality of grooves is not less than 0.1 mm and not more than 3 mm, The interval between adjacent grooves is not less than 1 mm and not more than 7 mm.

2. The manufacturing device of the three-dimensional filament combination according to claim 1, characterized in that: The plurality of grooves are respectively formed to extend in parallel at equal intervals.

3. The manufacturing device of the three-dimensional filament combination according to claim 1, characterized in that: Each of the plurality of grooves is formed to extend inclined at an angle of 30 degrees or more and 60 degrees or less with respect to the maximum inclination direction of the slideway inclined plate.

4. The manufacturing device of the three-dimensional filament combination according to any one of claims 1 to 3, characterized in that: The cross-sectional shape of each of the plurality of grooves is a quadrilateral.

5. The manufacturing device of the three-dimensional filament combination according to any one of claims 1 to 3, characterized in that: A hydrophilic polymer is coated or buried in all or part of the plurality of grooves.

6. The manufacturing device of the three-dimensional filament combination according to any one of claims 1 to 3, characterized in that: The plurality of grooves are formed to cover the entire area of ​​the upper surface of the chute inclined plate that receives the molten filaments. The cooling water supply unit is configured to supply the cooling water to all of the tanks covering the entire region.

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