JPH0157932B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an agricultural and horticultural support for use in agriculture, home gardening, etc., and a method for manufacturing the same.

Traditionally, this type of support for agriculture and horticulture has been the first.
A strut as shown is provided. This agricultural and horticultural support is made by covering the outer peripheral surface of a metal wire 100 with a synthetic resin layer 101, and covering both ends with protective caps 102, 102 for preventing corrosion. Because there are
(a) High cost, (b) Poor productivity, (c)
When the cap 102 falls off, there are problems such as rapid corrosion of the metal wire 100 and (d) poor appearance.

The present invention has been made in view of the above-mentioned problems, and provides a good-looking agricultural and horticultural support that can protect both ends of the support without covering it with a protective cap, and that can be efficiently mass-produced in a continuous process, and a method for manufacturing the same. We aim to provide the following.

Hereinafter, the present invention will be described in detail with reference to drawings showing embodiments.

That is, the agricultural and horticultural support of the present invention covers the outer peripheral surface and both end surfaces of the metal wire with a synthetic resin layer, and
The gist of this is that a bamboo knot-like flange that rises in the radial direction is formed on at least one end face covering portion of this synthetic resin layer, and a specific example is shown in Fig. 2 A, B, and C. Examples include agricultural and horticultural supports with a similar structure.

The agricultural and horticultural support shown in FIG. A bamboo knot-shaped flange 3 that rises in the radial direction is formed on the upper end surface covering portion 21 of the synthetic resin layer 2, and also on the outer peripheral surface covering portion of the synthetic resin layer 2 that covers the outer peripheral surface of the metal wire 1. A plurality of bamboo joint-like collar parts 31, which are slightly smaller than the bamboo joint-like collar parts 3, are formed at intervals, and the whole is constructed in the shape of a bamboo rod. As the metal wire 1, iron wire or aluminum wire with a diameter of 7 to 8 mm or less is preferably used, and when used as a support for home gardening, the length is about 40 to 50 cm, and it is used as a support for agricultural purposes such as tunnel cultivation. If length 2
A piece cut to about 4 m is used. When using a metal wire with a diameter of more than 7 to 8 mm, there may be an inconvenience that both end faces of the metal wire 1 cannot be sufficiently covered, as will be described later. It is preferable to avoid. In addition, in the case of a small diameter tube, it is difficult for resin to enter the inside, so that it can be molded in the same way as a wire rod. Therefore, the concept of metal wire in the present application is not necessarily limited to solid wires, but also includes metal tubes with small diameters. The synthetic resin layer 2 covering the metal wire 1 is made of soft or semi-hard polyvinyl chloride, low-density polyethylene, ABS resin, or other general thermoplastic synthetic resin, and preferably, The thickness of the outer peripheral surface coating portion that covers the outer peripheral surface of the metal wire 1 is approximately
0.2 to 2.0 mm, and the thickness of both end face covering portions 21 and 22 that cover both end faces of the metal wire 1 is approximately 1 to 10 mm.
It is formed to be in the range of mm. If the thickness of the outer peripheral surface covering portion is approximately 0.5 mm or more, cracks will not easily occur even if an impact is applied from the outside, and the thickness of both end surface covering portions 21 and 22 is greater than that of the outer peripheral surface covering portion. If the support is about 3 to 10 mm in size, the end face covering portions 21 and 22 will not easily break even when driving the support with a mallet, so the support can be driven in with confidence.

Furthermore, the upper end surface covering portion 21 of the synthetic resin layer 2
The bamboo knot-like flange 3 prevents strings, wires, etc. tied to the support from coming off, widens the upper end surface to make it easier to drive in with a mallet, etc., and at the same time reinforces the upper end surface covering portion 21. However, it is formed for the purpose of imparting a good bamboo rod-like appearance, and is preferably formed by being raised in the radial direction by about 0.8 to 4 mm. This is because, by increasing the level of excitement to this extent, the above objective can be satisfactorily achieved. In addition, a plurality of bamboo knot-shaped flanges 31, which are preferably formed on the outer circumferential surface coating portion of the synthetic resin layer that covers the outer circumferential surface of the metal wire 1, also give a good bamboo stick-like appearance, and also These are intended to prevent the wire from slipping down, but unlike the bamboo knot-shaped flange 3 of the upper end surface covering portion 21, these do not play the role of reinforcing or expanding the area. It can be formed into a small size.

The agricultural and horticultural support shown in FIG.
The agricultural and horticultural support shown in Fig. 2C differs from the one in Fig. 2A in that a bamboo joint-shaped flange 3 is formed on both sides, and the agricultural and horticultural support shown in Fig. It differs from the one shown in FIG. 2A in that the lower end face covering portion 22 is cut obliquely. The rest of the configuration is the same as that in FIG. 2A, so a description thereof will be omitted.

Next, a method of manufacturing the above-mentioned agricultural and horticultural supports of the present invention will be explained with reference to FIGS. 3 to 7.

FIG. 3 shows a schematic configuration of a continuous manufacturing apparatus used in the manufacturing method of the present invention. First, a metal wire 1 such as iron wire is continuously fed out from a feeding machine 4, and the metal wire 1 is passed through a processing machine 5 to form a metal wire. Rust, oil, etc. adhering to the surface of the wire rod 1 are removed by incineration. This incineration can be easily carried out by, for example, passing electricity through the metal wire 1 to generate Joule heat. Next, the metal wire 1 is passed through a straightening machine 6 to remove curling curls, and further passed through an adhesive applicator 7 to apply an adhesive. Various adhesives may be selected depending on the type of resin for the synthetic resin layer 2. For example, when the synthetic resin layer 2 is made of polyvinyl chloride, adhesives such as polyvinyl chloride dissolved in an organic solvent, maleic anhydride, etc. Modified polyethylene, modified polyvinyl chloride, etc. that are copolymerized with can be used.

Metal wire 1 that has been pretreated as described above
is then cut into a predetermined size by a cutter 8. Figure 4A, Figure 5A, and Figure 6A all show a long metal wire 1 that has been subjected to the above pretreatment.
Also, FIGS. 4(b), 5(b), and 6(b) all show the metal wire 1 cut into predetermined dimensions.

Metal wire 1 cut into predetermined dimensions in this way
As shown in FIG. 4B, FIG. 5B, and FIG. It is supplied to the die 11 one after another. In this case, the small gap l is set to be equal to the total thickness of the upper and lower end face covering portions 21 and 22 of the synthetic resin layer 2 shown in FIG.

Crosshead die 11 to which metal wire 1 is supplied
As shown in FIG. 7, this is attached to the tip of the extrusion molding machine 10 via a breaker plate 12, and by providing an inner die 14 in the die body 13, the inner periphery of the die body 13 and the inner A resin passage 15 is provided between the outer periphery of the die 14 and the outer periphery of the die 14.
The metal wire 1 is introduced from the rear end into the wire insertion passage 16 provided through the axis of the inner die 14, and the metal wire 1 is inserted from the extrusion port 17 of the die body 12.
The structure is such that the following can be derived. When the metal wires 1 are sequentially fed to the crosshead die 11 in a vertical line with a small gap l by the feed roller 9, the outer periphery of each metal wire 1 is coated with synthetic resin, and the front and back of each metal wire 1 is coated with synthetic resin. Metal wire 1 adjacent to...
A small gap l between the end faces of the metal wires 1 is also filled with synthetic resin, and the metal wires 1 are led out from the crosshead die 11 in a state where they are integrated into a single linear shape by the synthetic resin. At this time, if the inner die 14 is reciprocated back and forth once as shown by the arrow A each time the synthetic resin filled portion 18 of each small gap 1 passes through the extrusion port 17, the resin passage 15 will be caused by the advancement of the inner die 14. This causes a volume reduction and excess synthetic resin in the resin passage 15 is extruded from the extrusion port 17.
Each of the synthetic resin-filled portions 18 is formed with one bamboo knot-shaped flange 3 that is made of synthetic resin in the radial direction. FIG. 4C shows this state. Similarly, if the inner die 14 is continuously moved back and forth twice each time the synthetic resin filled portion 18 passes through the extrusion port 17, each synthetic resin filled portion 18 will be moved back and forth twice as shown in FIG. . . . two bamboo joint-like flanges 3 . . . are formed at a time. Furthermore, by reciprocating the inner die 14 at regular intervals, the bamboo knot-shaped flange 31 of the outer peripheral surface covering portion of the synthetic resin layer 2 is also formed in the same manner. In this case, it goes without saying that the height of the swell of the bamboo joint-shaped flange 3 or 31 can be freely adjusted by changing the forward speed and distance of the inner die 14. In addition, the diameter of the metal wire is larger than 7 to 8 mm, and the length of the small gap l... between each metal wire 1...
If it is larger than 20 mm, the volume of the small gap 1 becomes too large, so a large amount of synthetic resin must be injected and filled, and as a result, the extrusion pressure of the synthetic resin changes greatly in the small gap 1. Metal wire 1
The diameter of the metal wire 1 should be 7 to
It is desirable that the length of the small gap l be up to about 8 mm, and the length of the small gap l be up to about 20 mm.

The extrusion molded product in which each metal wire 1 is coated with a synthetic resin in this way is cooled through a cooler 19, and then taken off by a take-up roll 20, and then
As shown in FIG. By cutting the portions 18 along the bamboo-shaped flanges 3, agricultural and horticultural supports as shown in FIG. 3 is formed in two pieces, as shown in Fig. 5 D, by cutting between both bamboo joint-like flanges 3, 3, an agricultural and horticultural support as shown in Fig. 2 B can be made. get.

In the above manufacturing method, the synthetic resin filling portion 18 in the small gap l between each metal wire 1...
Each time the inner die 1 passes through the extrusion port 17 of
4 back and forth once or twice, one or two bamboo joint-shaped flanges 3 are attached to each resin-filled portion 18, as shown in FIGS. 4C and 5C.
However, according to another manufacturing method of the present invention, the synthetic resin filled portions 1
By reciprocating the inner die 14 twice back and forth each time 8' passes through the extrusion port 17, two bamboo knot-shaped flanges are formed only in the interval synthetic resin-filled portions 18', as shown in FIG. 6C. forming parts 3, 3;
In the synthetic resin filled portion 18'' between them, no bamboo knot-like flange portion is formed.As shown in FIG. Between the flanges 3, 3, the synthetic resin-filled portion 18'' that does not form the bamboo knot-like flanges is cut diagonally at the center to obtain an agricultural and horticultural support as shown in Fig. 2 C. . The other configurations are completely the same as those in the manufacturing method described above, so explanations will be omitted. In this case, it goes without saying that if the synthetic resin-filled portion 18'' which does not form the bamboo joint-shaped flange is cut at right angles, an agricultural and horticultural support as shown in FIG. 2A can be obtained.

As explained in detail above, in the agricultural and horticultural support support of the present invention, the outer peripheral surface and both end surfaces of the metal wire 1 are coated with the synthetic resin layer 2, so the ends are sufficiently protected without covering with a protective cap or the like. Moreover, since the bamboo knot-shaped flange 3 is formed on at least one end face covering portion 21 of this synthetic resin layer 2, it is easy to drive in with a mallet or the like, and this flange 3 Since it exerts a reinforcing effect to some extent, there is no fear that the end face covering portion 21 will be easily broken even if it is driven in with a mallet or the like. Furthermore, even if a string or wire is tied, the bamboo knot-like collar 3 prevents it from falling off. Moreover, by forming such a bamboo knot-shaped flange 3, the appearance is much better than the conventional pillar covered with a cap, and the commercial value is improved. In addition, such agricultural and horticultural supports can be efficiently mass-produced in a continuous process using the two manufacturing methods of the present invention, making it possible to reduce costs compared to conventional supports with caps.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of a conventional agricultural and horticultural support; FIGS. 2A, B, and C are partially cutaway front views showing different embodiments of the agricultural and horticultural support of the present invention; 4, 5, and 6 are diagrams showing the steps of the manufacturing method of the present invention, and FIG. 7 is a cross-sectional view of a crosshead die. (Explanation of main symbols in the drawing), 1...Metal wire,
2...Synthetic resin layer, 21, 22...End surface covering portion, 3, 31...Bamboo knot-like flange, 10...Extrusion molding machine, 11...Crosshead die, 14...Inner die, 17...Press Exit, 18, 18', 18''...
...Synthetic resin filled part, l...Small gap.

Claims (1)

[Scope of Claims] 1. The outer peripheral surface and both end surfaces of the metal wire are coated with a synthetic resin layer, and at least one of the end surfaces of the synthetic resin layer is coated with a bamboo knot-shaped flange that rises in the radial direction. Features agricultural and horticultural supports. 2 Cut a long metal wire to a predetermined length and feed the cut metal wires one after another in a vertical line with a small gap to the crosshead die of an extrusion molding machine,
The outer peripheral surface of each metal wire is coated with synthetic resin, and synthetic resin is filled between the end faces of each adjacent metal wire, and each time the synthetic resin filled portion passes through the extrusion port of the crosshead die, the inner die is By reciprocating back and forth at least once, at least one bamboo knot-shaped flange that rises in the radial direction is formed for each synthetic resin-filled portion, and each synthetic resin-filled portion is cut along this bamboo knot-shaped flange. A method for manufacturing agricultural and horticultural supports, characterized by: 3 Cut a long metal wire to a predetermined length and feed the cut metal wires one after another in a vertical line with a small gap to the crosshead die of an extrusion molding machine,
The outer peripheral surface of each metal wire is coated with synthetic resin, and synthetic resin is filled between the end faces of each adjacent metal wire. By reciprocating the die back and forth twice, two bamboo knot-like flanges that bulge in the radial direction are formed at every interval of the synthetic resin-filled portion, and the synthetic resin-filled portions with the bamboo knot-like flanges formed are A method for producing an agricultural and horticultural support post, characterized in that the synthetic resin-filled parts that do not form a bamboo knot-like collar are cut at the center between both bamboo knot-like collars.