JP2019191210A - Transverse flute and manufacturing method thereof - Google Patents

Abstract

To provide a transverse flute capable of obtaining excellent sound in terms of auditory sense even the transverse flute is manufactured by mass production using a synthetic resin material and to provide a manufacturing method of the flute.SOLUTION: In a transverse flute 1, a first half-split tube 2 and a second half-split tube 3 are combined, a bulkhead 6 becoming a reflection wall is arranged near a tube head of a tube body where an inner wall is tapered toward a tube end 4. The tube end 4 is opened, and a mouthpiece 7 and finger holes 8 to 14 are arranged and provided in appropriate positions in appropriate sizes between the bulkhead 6 and the tube end 4 in the first half-split tube 2. In the manufacturing method, a bamboo standard transverse flute is manufactured, it is split to manufacture respective molds, and the first half-split tube and the second half-split tube, which are formed of the respective molds, are bonded at opposed end faces to be manufactured.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a horizontal flute and a method for manufacturing the same.

  Conventionally, a flute has been mass-produced by a cylindrical body made of metal such as aluminum or plastic, which is designed and manufactured directly from a rule of thumb without using natural shinotake (see, for example, Patent Document 1).

JP 2002-132253 A

  However, in the flute with the above-mentioned conventional synthetic resin tube as the main body, the tone color, tone quality, richness of sound, expressiveness of sound, etc. are far inferior compared to so-called bamboo products made by one piece. There was a problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a cross flute capable of obtaining a sound that is excellent in audibility even with a cross flute by mass production using a synthetic resin material, and a method for manufacturing the cross flute.

  The flute according to the present invention includes a reflecting wall in the vicinity of the tube head of the tube body in which the first half tube and the second half tube are combined, and the inner tube wall is tapered toward the tube bottom side. A partition wall is provided, the tube bottom is open, and the first half cylinder has a singing mouth and a plurality of finger holes in an appropriate size between the position of the partition wall and the tube bottom It is characterized by being arranged at various positions.

  A method for manufacturing a horizontal flute according to the present invention is to produce a bamboo standard model horizontal flute from natural bamboo in a productive manner, and the bamboo standard model horizontal flute is a first half cylinder with a singer and each finger hole, It is divided into two half cylinders in the vertical direction, and the overall shape including the first half cylinder, the second half cylinder, and the respective divided end faces is measured, Take the data of mold production, add the positioning and sealing concave / convex shape data to be merged with the divided end face, and from these data through the mold manufacturing drawing or directly mold processing, the first half cylinder Two types of resin molding dies on the first half cylinder side and the second half cylinder side, and the resin is injected into the resin mold so that the first half cylinder side and the second half cylinder side are It is characterized in that it is manufactured by applying an adhesive to each divided end face and combining them.

  According to the present invention, it is possible to provide a horizontal flute capable of mass-producing a horizontal flute using a synthetic resin material and obtaining a sound that is excellent in audibility with a finish obtained by one-piece production.

1 is an overall perspective view of a horizontal flute showing an embodiment of the present invention. It is a whole perspective view which shows the state which looked at the 1st half cylinder from the inner side. It is a fragmentary perspective view which shows the state which looked at the 1st half cylinder from the pipe head side. It is a fragmentary perspective view which shows the state which looked at the 2nd half cylinder from the pipe head side.

  Hereinafter, the present invention will be described with reference to the accompanying drawings showing embodiments thereof.

  A horizontal flute 1 shown in FIG. 1 is formed by combining a first half cylinder 2 and a second half cylinder 3 that are divided in the longitudinal direction.

  Further, as shown in FIG. 2, the flute 1 is provided with a partition wall 6 serving as a reflection wall in the vicinity of the tube head of the tube body whose inner wall is tapered toward the tube bottom 4 side, and the tube bottom 4 is opened. ing.

  In the first half cylinder 2 shown in FIG. 2, a singing mouth 7 and a plurality of finger holes 8 to 14 are arranged in an appropriate size and at an appropriate position between the partition wall 6 and the tube bottom 4. ing.

  Note that the inner cylinder wall 19 of the first half cylinder 2 and the second half cylinder 3 is provided with singing holes 7 and finger holes 8 to 14 having appropriate sizes and appropriate intervals on the drawing. Is not clearly represented. However, between the adjacent ones of the partition wall 6, the singing mouth 7, and the finger holes 8 to 14 include the singing mouth 7 and the finger holes 8 to 14 corresponding to the volume, which are cut to an optimum tone (pitch adjustment) by tuning. The shape of the inner cylinder wall 19 is formed.

  The partition wall 6 may be integrated with the first half cylinder 2 or may be inserted separately into the cut groove 17.

  The first half cylinder 2 and the second half cylinder 3 are made of synthetic resin, and concavities and convexities that mesh with each other are formed on the divided end surfaces 15 and 16 to be combined.

  The tube head portions of the first half cylinder 2 and the second half cylinder 3 are shown in FIGS. A terminal plug 5 is provided at the open end of the tube head portion to cover the terminal.

  The terminal plug 5 may be integrated with either the first half cylinder 2 or the second half cylinder 3 and may be inserted into the cut groove 18 separately. And the 1st half cylinder 2 and the 2nd half cylinder 3 are united by the adhesive agent apply | coated to the division | segmentation end surfaces 15 and 16, and it becomes the cross flute 1 like FIG.

  Here, as an example of a method for manufacturing a horizontal flute, the following steps can be performed in order.

  That is, a necessary length is cut from a suitable Shinotake, and a node from the pipe head to the pipe bottom is extracted with a tool such as a hammer (not shown) to penetrate, and the outer cylinder portion is cut and smoothed.

  Using a sandpaper with a pattern (not shown), the inner cylinder wall 19 is inserted from the open end and sharpened.

  At this time, the diameter of the inner cylinder wall 19 is made substantially uniform. Next, a plurality of finger holes 8 to 14 are formed with a slightly smaller size and positions based on empirical rules. A partition wall 6 which is a reflection wall is formed on the tube head side, and the tube bottom side is tapered.

  Increase the size of the partition wall 6 and the singing mouth 7, the singing mouth 7 and the first finger hole 8, and each finger hole 9 to 14, cut the inner cylinder wall 19 between them, and adjust the pitch while tuning each The inner cylinder wall 19 is further tapered as a whole so as to have an appropriate volume. A bamboo flute is made with a handle with a handle and repeated fine adjustments while tuning.

  The bamboo flute shaped flute for making a mold is the one that is made by shaving with a handle with a handle.

  This bamboo standard model horizontal flute is divided into two parts in the vertical direction into a first half tube on the side where the singing and finger holes are located and a second half tube on the opposite side.

  The overall shape including the first half cylinder, the second half cylinder on the opposite side, and the respective divided end faces is measured, and data of the respective mold manufacturing actions are taken.

  Engagement concave / convex shape data is added for the purpose of ensuring a good positioning and improving the sealing performance when the first half cylinder and the second half cylinder are merged with each other.

  From these data, through metal mold production drawings or directly metal processing, two types of production molds for resin molding on the first half cylinder side and the second half cylinder side are made. This resin mold is for injection molding.

  Resin is melt-injected into an injection mold composed of a female mold and a male mold of the first half cylinder, and a large amount of the first half cylinder 2 made of resin is produced. Similarly, a large amount of the second half cylinder 3 made of resin is produced.

  The synthetic resin used for resin molding of the first half cylinder 2 and the second half cylinder 3 is any of ABS (Acrylonitrile Butadiene Styrene) resin, PP (Polypropylene) resin, and PE (Polyethylene) resin.

  The synthetic resin may be kneaded with any one of glass fiber, carbon fiber, bamboo fiber, and carbonized bamboo powder. Bamboo fiber, carbon fiber, and glass fiber are mixed into the resin as a short fiber during production, which affects the texture, weight, color tone, and sound quality. Alternatively, a bamboo pattern may be produced by applying a fine texture such as bamboo to the mold.

  In this way, the first half cylinder 2 and the second half cylinder 3 are each resin-molded in large quantities with a synthetic resin using a resin mold.

  Thereafter, the first half-cylinder 2 and the second half-cylinder 3 are taken out from the mass produced, and are bonded and united by applying an adhesive to the respective split end faces 15 and 16 to be combined. A plastic flute is made into a tube body.

  Thereby, the 1st half cylinder 2 and the 2nd half cylinder 3 are united, and the partition 6 used as a reflecting wall near the pipe head of the cylinder main body whose inner wall is tapering toward the pipe bottom 4 side. Is provided, the tube bottom 4 is opened, and the singing mouth 7 and the plurality of finger holes 8 to 14 are appropriately sized between the partition wall 6 and the tube bottom 4 in the first half cylinder 2. It can be set as the horizontal flute 1 arrange | positioned and provided in various positions.

1 Horizontal Flute 2 First Half Cylinder 3 Second Half Cylinder 4 Pipe Bottom 5 Terminal Plug 6 Bulkhead (Reflective Wall)
7 Uta 8, 9, 10, 11, 12, 13, 14 Finger hole 15, 16 Split end face 17, 18 Cut groove 19 Inner cylinder wall

Claims (3)

The first half cylinder and the second half cylinder are combined, and the inner cylinder wall is tapered toward the tube bottom side. As the butt is open,
The first half cylinder is provided with a singing mouth and a plurality of finger holes arranged in an appropriate size and in an appropriate position between the position of the partition wall and the tube bottom. flute. The horizontal flute according to claim 1,
The first and second half cylinders are made of synthetic resin, and uneven ends that mesh with each other are formed on the combined split end faces. In the manufacturing method of the horizontal flute of Claim 1 or Claim 2,
A bamboo standard model side flute is made from natural bamboo.
This bamboo standard model flute is divided vertically into a first half tube and a second half tube with singing and finger holes,
The first half cylinder, the second half cylinder, and the overall shape including the respective divided end faces were actually measured, and data on the respective mold manufacturing operations were taken.
Add positioning and sealing data that can be sealed to the split end face,
From these data, through the mold production drawing or directly mold processing, make two types of resin molds, the first half cylinder side and the second half cylinder side,
The resin is injected into these resin molds to produce the first half cylinder side and the second half cylinder side, and an adhesive is applied to each end face to produce them. A method of manufacturing a horizontal flute characterized by the above.