JPH10272703A - Production device of synthetic resin net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production device for synthetic resin net by which a synthetic resin net provided with a bulky volume, a large surface area, a favorable tensile strength and flexibility can be produced in a high precision. SOLUTION: This production device of a synthetic resin net is constituted of an intermediate nozzle part 1 provided with nozzle openings 11 at every nearly equal distance on the circumference, the inside nozzle part 2 and the outside nozzle part 3 provided with nozzle openings 21, 31 at every nearly equal distance on the circumference, and a drive mechanism rotating the inside and outside nozzle parts 2, 3 reversely to each other respectively. A supply path 4 supplying the synthetic resin material to the openings 11, 21, 31 of respective nozzle parts 1, 2, 3 is divided in the nozzle body to form supply paths 43a, 43b between the intermediate nozzle part 1 and the inside nozzle part 2 and also the intermediate nozzle part 1 and the outside nozzle part 3 and the divided supply paths are arranged to join together at the nearby position of the openings 11, 21, 31 of respective nozzle parts 1, 2, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sewage treatment in which sewage such as sewage and industrial effluent is treated by aerobic fungi or anaerobic fungi. The present invention relates to an apparatus for manufacturing a synthetic resin net suitably used as a filler for a sewage treatment tank installed in a tank, a packaging material, and the like.

[0002]

2. Description of the Related Art Conventionally, synthetic resin nets having a square or rhombic mesh have been widely used as drainage materials for civil engineering structures, fillers for sewage treatment tanks, packaging materials, and the like. By the way, when this synthetic resin net is made of a synthetic resin material such as polyethylene and polypropylene as a raw material, and is formed into a square mesh shape, a continuous extrusion molding method in which a warp is continuously extruded from a mold to form a weft yarn. On the other hand, in the case of a rhombic mesh shape, a continuous extrusion molding method in which the mold is rotationally driven while continuously extruding two warps from the mold,
A cylindrical synthetic resin net was formed and cut to obtain a flat synthetic resin net according to the intended use (for example, Takiron Co., Ltd. Trial Net (trade name), Trical Hishimenet (product name)
etc). These conventional synthetic resin nets have the advantage of having a large tensile strength in the case of a synthetic resin net having a square mesh shape due to the structure thereof, while the synthetic resin net having a rhombic mesh shape has an advantage. In the case of nets made, each has the advantage of having flexibility.

[0003]

However, in the case of a synthetic resin net having a rectangular mesh shape, the conventional synthetic resin net has a rhombic mesh shape formed of two yarns, a warp yarn and a weft yarn. In the case of a synthetic resin net having, since each is composed of two skewed warp yarns, the bulkiness required when used as a drainage material for civil engineering structures, a filler for sewage treatment tanks, a packaging material, etc. It has been difficult to produce a synthetic resin net having all of the conditions of large surface area, tensile strength and flexibility.

The present invention has been made in view of the above-mentioned problems of the conventional synthetic resin net, and has a high accuracy in producing a synthetic resin net having bulkiness, a large surface area, tensile strength and flexibility. An object of the present invention is to provide an apparatus for manufacturing a net.

[0005]

In order to achieve the above object, an apparatus for manufacturing a synthetic resin net according to the present invention comprises: an intermediate nozzle portion having nozzle openings at substantially equal intervals on a circumference; The inner nozzle portion and the outer nozzle portion, which are rotatably disposed on the inner and outer peripheries, respectively, having nozzle openings at substantially equal intervals on the circumference, and the inner nozzle portion and the outer nozzle portion are rotationally driven in opposite directions. A drive path, a supply path for supplying a synthetic resin material to the nozzle port of each of the nozzle sections branches in the nozzle body, between the intermediate nozzle section and the inner nozzle section, and between the intermediate nozzle section and the outer nozzle section. A supply path is formed, and the branched supply paths are joined at a position near a nozzle opening of each nozzle portion.

According to this synthetic resin net manufacturing apparatus, the warp yarns from the fixed intermediate nozzle portion are fixed to the inner nozzle portion and the outer nozzle portion which are driven to rotate in opposite directions by the continuous extrusion molding method. By continuously extruding the warp yarns obliquely running in the opposite direction from the respective nozzle openings, the warp yarns extending obliquely in the opposite direction are arranged inside and outside the warp yarns extruded from the nozzle openings of the intermediate nozzle portion. Can be formed into a cylindrical synthetic resin net having bulkiness, a large surface area, tensile strength, and flexibility, which are integrated by fusing the intersections of. Then, a supply path for supplying the synthetic resin material to the nozzle port of each nozzle section is branched in the nozzle body, and a supply path is formed between the intermediate nozzle section and the inner nozzle section and between the intermediate nozzle section and the outer nozzle section. At the same time, at a position near the nozzle opening of each nozzle portion, the branching supply path is configured to merge so that the synthetic resin material can be uniformly supplied to the nozzle opening of each nozzle portion without running out of material. Yes, this allows
A synthetic resin net can be manufactured with high precision. Further, the size of the nozzle body forming the supply path can be reduced while securing a sufficient capacity of the supply path, so that the temperature control of the nozzle body is facilitated and the manufacturing cost of the manufacturing apparatus is reduced. be able to.

In this case, the inner nozzle portion and the outer nozzle portion can be configured to be rotationally driven in the opposite directions at the same angular velocity.

[0008] With this arrangement, a warp extending obliquely in the opposite direction to the warp symmetrically with respect to the warp is disposed inside and outside the warp, and the intersections of the warps are fused and integrated to form a bulky body. A cylindrical synthetic resin net having a large surface area, tensile strength and flexibility can be formed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a synthetic resin net manufacturing apparatus according to the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 4 show an embodiment of the apparatus for manufacturing a synthetic resin net of the present invention. This apparatus for manufacturing a synthetic resin net includes an intermediate nozzle portion 1 provided with nozzle ports 11 at substantially equal intervals on a circumference, and a rotatable inner circumferential side of the intermediate nozzle portion 1. An inner nozzle portion 2 provided with nozzle openings 21 at substantially equal intervals, and an outer nozzle portion 3 provided rotatably on the outer peripheral side of the intermediate nozzle portion 1 and provided with nozzle openings 31 at substantially equal intervals on the circumference. And the inner nozzle portion 2 and the outer nozzle portion 3 are rotated in opposite directions (in this embodiment, the inner nozzle portion 2 is rotated rightward and the outer nozzle portion 3 is rotated in FIG. 3 (bottom view)). (Left rotation).

The intermediate nozzle portion 1 is formed in a cylindrical shape having a slightly expanded lower end portion, and is formed with an inner diameter from the lower end to a substantially intermediate position larger than the upper inner portion. In the illustrated portion, a plurality (4 in this embodiment)
) Slits 12. Further, a plurality of (in this embodiment, 12) cuts are made at substantially equal intervals from the lower end of the expanded lower end portion of the intermediate nozzle portion 1 so as to form the nozzle port 11. To

The inner nozzle portion 2 disposed on the inner peripheral side of the intermediate nozzle portion 1 is mounted on the fixed side member 5 via a bearing member 54 at its upper position, and at the intermediate and lower positions thereof. Is rotatably supported by being in sliding contact with the inner peripheral surface thereof, and has a lower end formed in a cylindrical shape with a slightly widened end, and a lower end provided with a plurality of (e.g., 12 The inner nozzle plate 22 which forms the nozzle opening 21 by making a cut is formed. A through-hole 23 is formed in the axis of the inner nozzle portion 2 for inserting a support rod 61 that supports the below-described carryable 6 so as to hang it. The upper end and lower end of the through-hole 23 have Bearing members 24a and 24b that hold the support rod 61 so as not to transmit the rotational force of the inner nozzle portion 2 to the support rod 61 are provided. The inner nozzle portion 2 has a plurality of shallow grooves 25 circumferentially formed on the outer peripheral surface thereof at an intermediate position where the inner nozzle portion 2 is in sliding contact with the inner peripheral surface of the intermediate nozzle portion 1 to supply a synthetic resin material described later. Backflow of the synthetic resin material from 43a is prevented. The inner nozzle portion 2 has an upper end protruding from the fixed side member 5 and is driven to rotate clockwise in FIG. 3 (bottom view) at a predetermined rotation speed by an electric motor (not shown).

The outer nozzle portion 3 disposed on the outer peripheral side of the intermediate nozzle portion 1 is connected to the lower piece 53 of the fixed-side member 5 via a bearing member 55 at the intermediate position, and at the lower position to the intermediate nozzle portion 1. Is rotatably supported by being in sliding contact with the outer peripheral surface thereof, and has a lower end formed in a cylindrical shape with a slightly widened end, and a lower end provided with a plurality of inner peripheral surfaces at substantially equal intervals (in this embodiment, 12 The outer nozzle plate 32 is formed so as to form the nozzle opening 31 by making a cut. At the lower end of the outer nozzle portion 3, a sprocket 33 is further fixed on the outer periphery of the outer nozzle plate 32, and the sprocket 33 and the rotary drive shaft 3 are fixed.
7 and a sprocket 35 fixed to the chain 7 and a tension sprocket 36 is disposed at an intermediate position of the chain 34 so that the outer nozzle 3 can be rotated at a predetermined rotational speed. In 3 (bottom view), it is driven to rotate left.

In this case, the inner nozzle portion 2 and the outer nozzle portion 3 are driven by rotating the rotary drive shaft 37 of the outer nozzle portion 3 in synchronization with an electric motor (not shown) for driving the inner nozzle portion 2 to rotate. Can be configured to be rotationally driven at the same angular velocity in opposite directions.

The nozzle port 1 of each of the nozzle portions 1, 2, 3
Synthetic resin material extruder (not shown) for supplying synthetic resin materials such as polyethylene and polypropylene to 1, 21, 31
Supply port 4 of synthetic resin material supply path 4 for connecting
1 is formed on the intermediate piece 52 of the fixed member 5. The supply port 41 penetrates the intermediate piece 52, and a supply path 4 formed between the upper piece 51 and the intermediate piece 52 through a groove 42 a formed on the outer peripheral surface of the upper piece 51 of the fixed member 5.
Connect to 2. And the supply path 42 is a supply path 43b formed between the intermediate nozzle portion 1 and the outer nozzle portion 3 as it is.
And is branched by a plurality of slits 12 formed in the intermediate nozzle portion 1, and is connected to a supply path 43 a formed between the intermediate nozzle portion 1 and the inner nozzle portion 2 through the slits 12. The supply passages 43a and 43b are slightly expanded at the lower end of the nozzle body, while the nozzle port 21 of the inner nozzle section 2 and the nozzle port 3 of the outer nozzle section 3
1 and at the positions near the nozzle ports 21 and 31, the branched supply paths 43 a and 43 b merge via the nozzle port 11 formed by making a cut from the lower end of the intermediate nozzle section 1. Thereby, the synthetic resin material is supplied from both the supply paths 43a and 43b to the nozzle ports 11, 21 and 31 of each of the nozzle portions 1, 2 and 3.

A through hole 2 formed in the axis of the inner nozzle portion 2
The carry 6, which is supported by being suspended from the lower end of a support rod 61 inserted through the support rod 3, is formed, for example, by forming the upper part into a conical shape, the middle part and the lower part into a cylindrical shape, so that each of the nozzle parts 1, 2, 2, The lower end of the carry 6 is used to push out the warp (strand) S which is continuously extruded slightly outward from the nozzle openings 11, 21, 31 of the third nozzle 3 and further extends outward. The shape of the cylindrical synthetic resin net to be molded is determined by the shape, for example, in addition to the cylindrical shape, a hexagonal cross section, a polygon such as an octagon is determined, and according to the application, obtained by cutting open. The width of the flat synthetic resin net is determined.

On the outer periphery of the intermediate piece 52 and the lower piece 53 of the fixed side member 5 constituting the outer peripheral portion of the nozzle body, a heater such as a band heater for preventing the temperature of the synthetic resin material flowing through the supply path 4 from lowering. The members 7a and 7b are provided.

The apparatus for manufacturing a synthetic resin net comprises an inner nozzle 2 and an outer nozzle 2 which are driven to rotate the warp yarn S1 from the nozzle opening 11 of the fixed intermediate nozzle 1 in opposite directions by continuous extrusion. Warp yarns S2 and S3 skewed in the opposite direction from the respective nozzle openings 21 and 31 of the section 3
Are continuously extruded, and the warp yarns S2 and S3 extending obliquely in opposite directions are arranged inside and outside of the warp yarn S1 extruded from the nozzle port 11 of the intermediate nozzle portion 1,
As shown in FIG. 5, a cylindrical synthetic resin net N having bulkiness, a large surface area, tensile strength and flexibility, as shown in FIG. 5, was formed by fusing the intersections of the respective warp yarns S1, S2, and S3. Can be molded.

[0019]

According to the apparatus for manufacturing a synthetic resin net of the present invention, the supply path for supplying the synthetic resin material to the nozzle port of each nozzle section is branched in the nozzle main body, and the intermediate nozzle section and the inner nozzle section are separated. By forming a supply passage between the intermediate nozzle portion and the outer nozzle portion, and by joining the branched supply passages at a position near the nozzle opening of each nozzle portion, the nozzle opening of each nozzle portion is formed. In addition, the synthetic resin material can be supplied uniformly without running out of material, whereby a synthetic resin net can be manufactured with high accuracy. Further, the size of the nozzle body forming the supply path can be reduced while securing a sufficient capacity of the supply path, so that the temperature control of the nozzle body is facilitated and the manufacturing cost of the manufacturing apparatus is reduced. be able to. And
The synthetic resin net manufactured by this synthetic resin net manufacturing apparatus is required to be used as a drainage material for civil engineering structures, a filling material for a sewage treatment tank, a packaging material, and the like, a bulkiness, a large surface area, and a tensile strength. And all the conditions of flexibility.

Further, the inner nozzle portion and the outer nozzle portion are
By rotating and driving in the opposite direction at the same angular velocity, warp yarns extending diagonally in the opposite direction symmetrically with respect to this warp are arranged on the inside and outside of the warp, and the intersection of each warp is fused and integrated. Thus, a cylindrical synthetic resin net having bulkiness, a large surface area, tensile strength and flexibility and uniform deformation can be formed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a nozzle body of a synthetic resin net manufacturing apparatus of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a bottom view of the synthetic resin net manufacturing apparatus of the present invention.

FIG. 4 is a side view of the same.

FIG. 5 shows a synthetic resin net manufactured by the synthetic resin net manufacturing apparatus of the present invention, wherein (a) is a front view,
(B) is a sectional view taken along line BB, and (c) is a sectional view taken along line CC.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intermediate nozzle part 11 Nozzle port 2 Inner nozzle part 21 Nozzle port 3 Outer nozzle part 31 Nozzle port 4 Supply path of synthetic resin material 5 Fixed side member 6 Carryable 7a Heater member 7b Heater member

Claims (2)

[Claims] 1. An intermediate nozzle portion provided with nozzle openings at substantially equal intervals on a circumference, and nozzle openings arranged at substantially equal intervals on the circumference, rotatably disposed on inner and outer circumferences of the intermediate nozzle portion, respectively. An inner nozzle portion and an outer nozzle portion provided with a drive mechanism for driving the inner nozzle portion and the outer nozzle portion to rotate in opposite directions, respectively. The supply path branches in the nozzle body to form a supply path between the intermediate nozzle section and the inner nozzle section and between the intermediate nozzle section and the outer nozzle section. And a synthetic resin net manufacturing apparatus. 2. The synthetic resin net manufacturing apparatus according to claim 1, wherein the inner nozzle portion and the outer nozzle portion are driven to rotate at the same angular velocity in opposite directions.