JPH026488B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a horticultural support used to support potted plants and the like.

As shown in FIGS. 1 and 2, a conventional gardening support has a support main body made of a core material 1 made of metal such as iron or aluminum, whose outer peripheral surface is covered with a coating layer 2 made of synthetic resin. Both ends of the core material 1 were covered with synthetic resin caps 4, 4 to cover both end surfaces of the core material 1. In such a support, the cap 4 prevents rust from progressing from the end face of the core member 1.

However, in the case of the above-mentioned column, since the cap 4 protrudes around the column body 3 by the thickness of the portion 4a fitted onto the column body 3, as shown in FIG. When inserted into the soil 5, a gap 6 corresponding to the above-mentioned wall thickness was created around the support main body 3, which could cause the support to wobble. To prevent this wobbling, the pillar body 3
The surrounding soil 5 had to be held down by hand, which was troublesome.

In addition, when pulling out the support post after inserting it into the soil, as shown in Fig. 4b, the upper end of the cap 4 may be pressed against the soil 5, or the support main body 3 may be pulled out of the cap 4.
There was a risk of being pulled out. In addition,
There is also a structure in which the support main body 3 and the cap 4 are bonded together with an adhesive, but even in such a structure, there is a similar risk if bonding failure occurs.

On the other hand, conventionally, as shown in FIG. 3, a protrusion 7b formed on a cap 7 is fitted inside the end of a support main body 3, which is made by covering the outer peripheral surface of a pipe-shaped core material 1 with a coating layer 2. Therefore, there was one in which the outer circumferential surface of the cap 4 was made flush with the outer circumferential surface of the support main body 3.

According to this, when the support is inserted into the soil, the gap 6 as explained in Fig. 4a will not be created, but when the support is pulled out from the soil as explained in Fig. 4b, However, there is a risk that the support main body 3 may be pulled out from the cap 7, and the cap 7 cannot be attached if the core material is not pipe-shaped, for example, solid.

In addition, in manufacturing the two types of struts mentioned above, apart from the step of manufacturing the strut body 3, there is a step of manufacturing the caps 4, 7, and a step of manufacturing the caps 4, 7.
In addition, when the caps 4 and 7 are bonded to the support body 3, an extra step of applying an adhesive is required.

The present invention has been made in view of the above, and
It can be inserted into the soil without wobbling, and
To provide a method for manufacturing a gardening support in which a support main body and a cap are firmly integrated.

Figures 5 and 6 show a horticultural support made by an embodiment of the method of the invention. The support main body 3 is constructed by covering the outer peripheral surface of a solid metal core material 1 with a synthetic resin coating layer 2, as in the conventional structure described above. Then, at the lower end of the support main body 3,
A synthetic resin cap 8 is heat-sealed to the end face of the covering layer 2, and the end face of the core material 1 is covered with this cap 8. In this case, the cap 8 has a tapered shape as shown in FIG. 6a, and its outer peripheral surface is substantially flush with the outer peripheral surface of the support main body 3. Further, a synthetic resin cap 9 is heat-sealed to the covering layer 2 at the upper end of the support main body 3, and the end face of the core material 1 is covered by this cap 9. In this case, as shown in Figure 6b, the cap 9
are heat-sealed to the end surface and outer peripheral surface of the covering layer 2. In addition, in FIG. 6, H ₁ is the heat-sealed surface between the cap 8 and the coating layer 2 at the lower end of the column, or
H ₂ indicates the heat-sealed surfaces of the cap 9 and the covering layer 2 at the upper end of the column, respectively. In addition, as shown in FIG. 6c, if the covering layer 2 of the support 3 has a knot-like protrusion, cut the knot-like protrusion or the position adjacent to the upper side of the protrusion, and attach the end surface to this cap 9. Not only does the finish look beautiful when you twist it and cover it, but the cap 9
It is strongly heat-sealed at _H3 .

Next, an example of the method for manufacturing the above-mentioned support column will be described. When installing the cap 8 at the lower end of the column,
First, as shown in FIG. 7a, a mold 10 with an open top end and a mold surface 10a having the same shape as the outer surface of the cap 8 is used.
Next, a required amount of raw material 11 made of synthetic resin pellets is charged using a metering device (not shown). In this case, the upper half of the mold surface 10a is a guide surface 10b having the same diameter as the outer peripheral diameter of the lower end of the column main body 3. Further, the synthetic resin used as the material 11 is a synthetic resin that is compatible with the coating layer 2 of the column main body 3, preferably a synthetic resin of the same type as the coating layer 2. For example, polyvinyl chloride, polyethylene, polypropylene, etc.
It is a synthetic resin such as ABS type.

Next, as shown in FIG. The above-mentioned material 11 is thermally fused at their contact surfaces to be integrated. Ultrasonic heating means is used as means for thermal fusion. In the ultrasonic heating means, as shown in FIG. 9, a formwork 10 is constructed on a horn 13 connected to an ultrasonic oscillator 12. Then, while the ultrasonic wave is being oscillated, the support main body 3 shown in FIG. 7b is slightly pressed downward. In this way, the material 11 is melted and the material 11 and the coating layer 2 are instantaneously thermally fused at their contact surfaces.

Thereafter, when the support main body 3 is pulled up as shown in FIG. After being released from the mold, it is air cooled.

On the other hand, if a cap 9 is to be provided at the upper end of the column, as shown in FIG. Then, as shown in Figure b, insert the upper end of the support main body 3 into the formwork 14 and release the material 11.
contact with. At this time, the column main body 3 is pushed in a little forcefully, a part of the material 11 is raised within the gap between the column main body 3 and the mold surface 14a, and the material 11 is made to follow the outer circumferential surface of the coating layer 2. In this state, material 1
1 and the coating layer 2 are thermally fused at their contact surfaces, and then released from the mold as shown in FIG. In this case, the same means as described above are employed as means for performing heat fusion.

As detailed above, in the gardening support manufactured according to the present invention, the support main body and the cap are integrated by heat fusion, so when the support support is pulled out of the soil, the support main body and the cap are connected together. There is no risk of separation. Furthermore, if the outer peripheral surface of the support main body and the outer peripheral surface of the cap are flush with each other, when the support support is inserted into the soil, there will be no gap between the support support and the soil, which will cause the support to wobble.

Further, according to the method for manufacturing a gardening support according to the present invention, the process of manufacturing the cap and the process of covering the support main body with the cap can be completed in a very short time.
Since it can be implemented in the process, production efficiency is dramatically improved. Another advantage is that it is easy to form the outer circumferential surface of the support main body and the outer circumferential surface of the cap flush with each other.

[Brief explanation of drawings]

Figure 1 is a partially cutaway side view of a conventional gardening support.
Figure 2 is an enlarged sectional view of the same main part, Figure 3 is an enlarged sectional view showing the main part of another type of conventional gardening support, and Figure 4a is a conventional gardening support inserted into the soil. FIG. 5 is a partially cutaway side view of a gardening support according to an embodiment of the present invention; FIG. , FIG. 6a is an enlarged sectional view of the lower end, FIG. 6b is an enlarged sectional view of the upper end, FIG. 6c is another enlarged sectional view of the upper end, and FIGS. 8a, b, and c are explanatory diagrams showing a manufacturing method according to an embodiment of the present invention, and FIG. 9 is a schematic diagram of an ultrasonic heating means. 1... Core material, 2... Covering layer, 3... Support main body,
8, 9... Cap, 10, 14... Formwork, 11
……material.

Claims (1)

[Claims] 1. After the required amount of material consisting of synthetic resin pellets is charged into the formwork of a horn connected to an ultrasonic oscillator, the outer peripheral surface of the solid metal core material is covered with a synthetic resin coating layer. The end of the column main body is inserted into the formwork and brought into contact with the material in a pressed state, and the coating layer of the column main body melted by ultrasonic vibration and the material are fused at their contact surfaces. A method for manufacturing a horticultural support, comprising the steps of: covering the end face of the core material with the above-mentioned material to obtain a horticultural support with a cap integrally formed at the end of the support main body.