JPS5985229A - Production of container for culturing yam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a method for manufacturing a mountain yam cultivator.

The present inventor is the inventor of the Nagaimo Cultivator (Utility Model Publication No. 48-21314). Thanks to the above invention and subsequent inventions, Japan's production technology for Japanese yam and mountain yam such as those produced by the Ministry of Nature has made revolutionary progress. In recent years, the growth of cultivators has been remarkable.

This invention provides a manufacturing method for mass producing the cultivation device.

Cultivators are made of resin, typically vinyl chloride, so that they can be used repeatedly over many years without fear of corrosion in the soil. Also, considering economic efficiency, a thin-walled cylinder is used. It is significantly more difficult to form a thin vinyl chloride plate into the desired shape than it is to process a metal plate.

Figures 1 and 2 show the outline of a typical cultivator.

Even though there may be some changes in shape, the fact remains that the whole piece is a cylinder with many small holes, and that the end of the piece is a flat open part J.

Possible methods for manufacturing this cultivator include, for example, making a small hole in a ready-made PVC thin-walled tube and cutting the tip to create a flat opening 3; or punching a small hole in a flat thin plate and making a flat opening [1]. After punching out the part that will become part 3 with a press,
This is a method of rolling it into a cylindrical shape.

This invention does not depend on any of them.

Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

This invention σ) The tube of the cultivator is not a ready-made tube or a rolled plate, but is made by extrusion molding of resin into a thin-walled tube with an axial cut in one place on the peripheral wall, which can be cut to the required length one after another. It is divided. Figure 3 shows the tube that serves as a base for this purpose.

The cuts run in the axial direction.

The cylinder λ divided into required lengths has a total length or part of 17J.
Push open from 114' to the left and right ＼ Upper and lower type of press S'!
; Send between rx and kb. The state is shown in Figs. 4 and 5. The cylinder A is opened by the chisel-shaped fixing part 7, and the cylinder a is flattened by the wide feed roller g.
send to Lower press mold! rb ' Enter along the guide edge on the 5% side, and by the detection and stop mechanism (not shown) park the deployment tube at the required position, lower the upper mold Sα in Figure 5, and place it between the many small holes on the left and right and the flat surface of the cultivator. A portion 3' that will become the 1'' portion 3 is punched out (FIG. 4).

Since the thin vinyl chloride sheet is highly elastic, when it is pulled out from the press S after press punching, it immediately curls up and returns to its previous cylindrical shape (Figure 6).

The portion 3' that will become the flat opening 3 of the cultivator is also rounded into a cylindrical shape, and is inserted into the mold 9 to form the flat IJN opening 3 into a desired shape. As shown in Fig. 6, this mold is made by appropriately widening the rounded flat opening portion 3' and forming the first and second molds.
It is a push-insertion type that forms the required opening 3 as shown in the figure, an example of which is shown in Figure 8.9. The mold 9 is elastically tightened by placing the outer mold 9b along the outside of the inner bar νtα having a circular female surface, and using a coil spring // as a tightening band.

Either carry the tube together with the mold 9 and immerse it in warm water, or
As shown in the figure, hot air such as hot water, steam, or heated air may be blown from the injection saving IO. ;If you can blow h4 water, 30
After a few seconds, the temperature will return to normal, and then it will be removed from the mold. The heating temperature of the resin, the holding time, the time from room temperature to 9i1, etc. are all related to μIJ, so it is best to determine them experimentally depending on the properties of the resin used and the factory capacity. good.

Efficiency can be improved by preparing not one mold 9 but, for example, the + side, and by circulating the molds to raise, hold, and cool the temperature, and by moving each cylinder together with the mold 9.

Although the above has been explained by way of one embodiment, the embodiment of the present invention/1
It goes without saying that fii lAi can be varied and applied in a variety of ways without changing its gist.

This invention, as the originator of the yam cultivation method using tubes, is the most efficient way to provide and popularize cultivators at low cost.
! The original objective of developing the l method was achieved.

As mentioned above, the tube can be used as a ready-made pipe or 181. ``Irrespective of the length, we used extrusion molding to create a tube with cuts from the beginning, making it extremely easy to process it after shaving.''

Using the unique elasticity of thin-walled resin, we succeeded in using an original processing method that presses the tube while pressing it.
After 1st punching, heat treatment is performed in the mold without losing its elasticity, and the troublesome flat opening is fixed in the desired shape, which significantly reduces the number of processing equipment and processes compared to common-sense processing methods, making the entire process smoother. It became possible to produce

[Brief explanation of drawings]

1st! Figure 2 is an example perspective view of a potato cultivator, and Figure 2 is the same.
W1 is an elevational view of the urban capital, Figures 3 to 7 are plan views showing the state of the powder in each step of the present invention, Figure 8 is an elevational view showing the state in which the nf part is inserted into the mold, and Figure 9. is a sectional view thereof. /...Small hole, C...tube, 3...flat opening, 9.
・Molding. Patent applicant 11.Q l:t:l Satoshi
Male patent applicant Masaru 1 [(room

Claims (1)

[Claims] The process of making a thin-walled cylinder with a cut in the axial direction at one point on the peripheral wall by extrusion coating of resin, and dividing it into the required length one after another. The process of pushing the press into the upper and lower molds of the brace and punching out the part that will become the part between the left and right small holes and the flat part of the cultivator. After pressing, the flat opening returns to a cylindrical shape. A Yamanote cultivator comprising the steps of: inserting the part into a mold to form a desired shape; and heating the part with hot water or hot air once placed in the mold, and removing it from the mold after returning to room temperature. Manufacturing method.