JPH0510923B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application] The present invention relates to a method for manufacturing a folding fan,
The purpose is to improve the productivity of a fan in which a covering paper is welded or pressure-bonded to synthetic resin bone fragments.

[Prior art and its problems] Conventionally, full-scale folding fans using bamboo bone fragments have been manufactured by the following method. First, the covering papers 2, 2, which are slightly larger than the finished size, are glued and overlapped, and then, after being air-dried for an appropriate time, the covering papers are folded to match the folded state of the folding fan. Next, a metal spatula having an insertion part similar to that of the bone fragment is inserted into each part corresponding to the insertion part of the bone fragment, and the glued parts of the covering paper are partially opened. As shown in the figure, the bone fragments 23, 23 coated with glue are forcibly pushed into the open portions to a predetermined position, and then the cantilever 26 is inserted into the diagonal holes 25, 25 of the bone fragments 23, 23 to remove these bone fragments. 23, 23 are rotatably mounted. Finally, fold this semi-finished fan, cover paper 2,
Finish cutting the periphery of step 2 to complete the fan.

However, this method had the problem of poor productivity.

This is because each of the conventional manufacturing processes described above requires skill and many steps, and each step must be performed manually. In particular, this is because, after the covering papers 2, 2 are adhered to each other, the bone fragments 23, 23 must be individually inserted and fixed into predetermined positions.

[Technical Problem] In order to improve the production efficiency in the method of manufacturing a fan, the present invention aims to fix the bone fragments 23, 23 in a predetermined position at the same time as the covering papers 2, 2 are attached to each other. Consider it a technical issue.

[Technical Means] The technical means of the present invention taken to solve the above-mentioned technical problem is as follows. 23, 23 are connected to each other by a connecting piece 4 with a small cross section.
a step of molding the bone fragment connecting body 1 connected and integrated by the holes 25, 41 with elastically deformable synthetic resin; a step of unfolding the body 1 into a fan shape; a step of overlapping covering papers 2, 2 on both the front and back surfaces of required areas of the bone fragment connected body 1 in this unfolded state and welding or pressurizing these covering papers to each other; A step of cutting out the connecting pieces 41, 41, which is performed simultaneously with or after this welding or pressure bonding step;
and a step of creating creases in the covering papers 2, 2 during or after the cutting of the connecting pieces 41, 41.
That's true.

[Effect] The above technical means works as follows.

Since the bone pieces 23, 23 are arranged side by side at a constant interval and are connected by the connecting pieces 41, 41, the lengths of the connecting pieces 41, 41 are constant. When the bone fragments 23, 23 are developed in a fan shape so that the cannibal holes 25, 25 or the vicinity thereof overlap, the bone fragments 23, 23 are opened at equal angles. This state corresponds to the most open state of the fan. In this state, the covering papers 2, 2 are overlapped on both the front and back sides of the bone fragment connection body 1, and when the bone fragments 23, 23 are bonded together by heat welding or pressure, the bone fragments 23, 23 and the covering papers 2, 2 are properly bonded. combined into a relationship. When the connecting pieces 41, 41 are removed at the same time as or after this welding or adhesion process, the bone pieces 23, 23 will be removed.
It is attached to a predetermined position with respect to the covering papers 2, 2. Thereafter, the covering papers 2, 2 are folded to complete the folding fan.

[Effects] Since the present invention has the above configuration, it has the following unique effects.

Since the covering papers 2, 2 can be thermally welded or pressure bonded together, and the bone pieces 23, 23 can be fixed at predetermined positions between the covering papers 2, 2, the number of manufacturing steps can be reduced.

No skill is required to attach the bone fragments 23, 23 to predetermined positions.

[Example] Next, examples of the present invention described above are shown in FIGS. 1 to 17.
This will be explained in detail based on the diagram.

In this embodiment, a covered paper application device shown in FIGS. 10 and 11 is used. As shown in the figure, this device connects the covering papers 2, 2 and the connected bone fragments 1 to an upper mold 10.
The covering papers 2, 2 are welded to the connected bone fragment 1 by being compressed by the first cushioning material 11 attached to the lower surface and the second cushioning material 13 attached to the upper surface of the lower mold 12. This is what I did.

For this reason, the upper mold 10 and the lower mold 12 are arranged to face each other, one of the lower molds 12 is fixed to the upper surface of the bed, and the other upper mold 10 is attached to the air cylinder 8.
The upper mold 10 and the lower mold 12 are raised and lowered at a predetermined timing, and the pressure applied between the upper mold 10 and the lower mold 12 is set to a predetermined value.

Next, in this embodiment, a bone fragment connecting body 1 as shown in FIG. A thin connecting piece 4 connects each other near the center of the
1, the bone fragments 23, 23
A diagonal hole 25 is formed at the end of each diagonal attachment side. The bone fragment connecting body 1 is integrally molded as a whole by injection molding of synthetic resin.

Further, the covering papers 2, 2 used in this example are those in which a heat-welding layer 4 made of thermoplastic synthetic resin is provided on one side of the paper 3 as shown in Fig. 2, and its planar shape is shown in Fig. 4. As shown in the figure, the overall shape is approximately rectangular, slightly larger than the unfolded shape of a fan, and an arc-shaped notch is formed in the center of the long side. Note that the shape of the notch matches the inner circumferential arc of the finished shape of the covering papers 2, 2.

The actual production of a fan using the above-mentioned apparatus, the connected bone fragments 1, and the covering papers 2, 2 will be described in detail below.

First, the bone fragment connection body 1 includes a bone fragment 2 located at one end.
3 to the other bone fragment 23, the positioning pins 27 are fitted into the respective pin holes 25 one after another. Since the lengths of the connecting pieces 41, 41 are preset, as shown in FIG.
3 and 23 are expanded to match the expanded state.

The connected bone fragments 1 expanded into a fan shape in this way are
As shown in FIGS. 4 and 5, the second cushion material 13 is sandwiched between the covering papers 2, 2 and overlaid so that the heat-sealing layers 4, 4 are on the inner surface, and these are integrated into a second cushion material 13.
Place it on the top surface.

In this embodiment, since the covering papers 2 and 2 are fitted to each other by welding, both the upper mold 10 and the lower mold 12 of the covering paper pasting device are heated to a predetermined temperature by a heater. A heating type mold is used, and a first cushion material 11 and a second cushion material 1 are used.
3 is a heat-resistant silicone rubber plate. Further, the upper mold 10 is designed to perform two lifting and lowering operations at predetermined timing in one pasting operation. Furthermore, in the vicinity of the lower die 12, there are apertures 15 to 15 for positioning the object to be adhered.
19 are arranged. Of these, 15 to 1
7 is for setting the fixed position of the covering papers 2, 2, and the hit 15 is set so as to come into contact with one short side of the covering papers 2, 2 arranged at an appropriate position, The stops 16 and 17 are arranged to correspond to the other long side, and the distance between these stops 16 and 17 is adapted to the vertical width of the covering papers 2 and 2. Furthermore, the other abutments 18 and 19 function as positioning means for the bone fragment connection body 1, and serve as positioning means for the bone fragment connection body 1.
The bone fragments 23, 23 are arranged so as to come into contact with the outermost bone fragments 23, 23 when placed in the proper position.

Therefore, one of the covering papers 2 is placed on the upper surface of the second cushion material 13 with the heat-sealing layer 4 facing upward, and this covering paper 2 is positioned between the abutments 16 and 17 so that one short side is The bone fragments 18, 19 are brought into contact with the outermost bone fragments 23, 23 by placing the temporarily assembled bone fragment connected body 1 developed in a fan shape as described above on the upper surface of the covering paper 2. When the other covering paper 2 is placed in the same way as the above-mentioned one covering paper 2, the bone fragment linking body 1 and the covering papers 2, 2 are placed in the proper position. and set to a predetermined state.

After that, when the covering paper pasting device is operated, the connected bone fragment 1 and the covering paper 2 are bonded together by the first press.
The laminated body of No. 2 is pressed between an upper mold 10 and a lower mold 12,
As a result, the covering papers 2, 2 attached to both sides of the connected bone fragment 1 are deformed so as to face each other as shown in FIG. Further, since the upper mold 10 and the lower mold 12 are maintained at a predetermined temperature, the heat-welding layers 4, 4 on the inner surfaces of the covering papers 2, 2 are partially welded to each other. Then, when a second press is performed after the first press is completed, since the covering papers 2, 2 have been bent inward and deformed in advance, the thermal welding layer 4 located on the inner surface of these covering papers , 4 are finally reliably heat-welded to each other.

After going through the above steps, the semi-finished fan to which the covering papers 2, 2 have been pasted is punched out by a punching machine along the two-dot chain line C in FIG.
When cut and removed, the covering papers 2, 2 are punched out into the final finished shape as shown in FIG. 8, and the bone pieces 23, 23 become independent and rotatable, respectively. In the punched state, the outermost bone fragment 2
On the outside of 3 and 23, there are extension pieces 21 for attaching the main rib.
21.

After that, when the pasting area of the covering papers 2, 2 is pressed using a press mold having protrusions that match the folding positions of the covering papers 2, 2, the covering papers 2, 2,
Fold lines 20, 20 are alternately engraved on both the front and back sides of 2.

Next, after removing the positioning pin 27, the distal ends of the main ribs 22, 22 are glued to the extension pieces 21, 21 of the covering paper, and each bone piece 23 is provided with a cantilever hole 25 formed in the main ribs 22, 22. The holes 25, 25 for the cantilever
A hook 26 is inserted through 5 and 25, and each main rib 22 and bone fragment 23 are rotatably caulked. Thereafter, the covered papers 2, 2 are folded along the lines 20, 20, and the folded portions of the covered papers of the folded fan are compressed as shown in FIG. 17. Then covered paper 2,
Since the folding portions 2 are strongly bent into the folded state, the shape of the fan in the folded state becomes small and compact.

In the above embodiment, the bone fragments 23, 23 of the bone fragment connection body 1 were temporarily assembled into a fan shape using an independent positioning pin 27 prior to pasting the covering papers 2, 2. Kaname 26 may be used as is as 27. Further, the positioning pin 27 may be implanted and fixed at a predetermined position between the abutments 18 and 19 near the second cushion material 13; After placing the lower covering paper 2, the bone fragments 23, 23 are set in a temporarily assembled state on this covering paper 2.

Moreover, the bone fragment connected body 1 of FIG. 1 used in the above example
Instead, a bone fragment connector 1 as shown in FIG. 13 can also be used. This bone fragment connection body 1 includes bone fragments 23, 23.
The distal ends of the bones are connected by connecting pieces 41, 41, and the length of each of these bone pieces 23, 23 is set longer than the final finished dimension.
Positioning pins 2 are inserted into the pinholes 25, 25 formed in the bone fragments 23, 23 of this bone fragment connection body 1, respectively.
7 and temporarily assembled in the same manner as in the above embodiment, and the covering papers 2, 2 are attached in the same manner. As shown in FIG.
1 and 41 will be consecutive. Thereafter, punching is performed along the finished shape C, resulting in a finish punching similar to that shown in FIG. 8 of the first embodiment, and the bone fragments 23,
23 can be rotated independently. From now on, the above 1st
The fan is completed by proceeding with the subsequent steps in the same manner as in the example.

In each of the above cases, so-called laminated paper, which has a heat-welding layer 4 on one side, is used for both the covering papers 2, 2, but only one of the covering papers 2, 2 is used as a laminated paper. Good too,
Further, as the covering papers 2, 2, pressure-sensitive adhesive paper having an adhesive layer on one side can also be used. Further, in some cases, plain paper may be pasted with glue. In this case, upper mold 1
0. There is no need to heat the lower mold 12 to a constant temperature,
Further, the second cushion materials 13, 13 may be any cushion material and are not required to have heat resistance.

[Brief explanation of drawings]

1 to 9 and 12 show explanatory diagrams of a first embodiment of the manufacturing method of the present invention, FIG. 1 is a plan view of a connected bone fragment 1, and FIG. 2 is an enlarged cross-section of a covered paper. figure,
Fig. 3 is a plan view of the connected bone fragments 1 when it is unfolded into a fan shape, Fig. 4 is a partially cutaway plan view of the bone fragments of the fan with covering paper overlaid from the front and back sides, and Fig. 5 is a plan view of the structure shown in Fig. 4. A-A
A sectional view, FIG. 6 is a sectional view taken along the line A-A in FIG. 4 after preliminary pressing with a pasting device, FIG. 7 is a plan view of the covered paper in a welded state, and FIG. 8 is a plan view of a semi-finished fan. , No. 9
The figure is a plan view of the finished fan, Figure 10 is a front view of the device used to implement the present invention, and Figure 11 is the 10th
FIG. 12 is an explanatory diagram showing the positioning state of the welded object, FIGS. 13 to 15 are explanatory diagrams of the second embodiment of the manufacturing method of the present invention, and FIG. 13 is a bone fragment. A plan view of the connecting body 1, FIG. 14 shows the bone fragment connecting body 1.
Fig. 15 is a plan view of the covered paper in a welded state, Fig. 16 is an external view of the covered paper with the concave line inserted into the temporary crease, and Fig. 17 is the finished fold of the covered paper. FIG. 18 is an explanatory diagram of the conventional manufacturing method, and FIG. 19 is a sectional view taken along line DD in FIG. 23
... Bone fragment, 25, 25... Kaname hole, 41, 41...
Connecting piece.

Claims (1)

[Claims] 1 Bone piece 23 with a cane hole 25 formed at one end,
23 are arranged in parallel at regular intervals, and the bone fragments 23, 2
3. A step of molding the bone fragment connecting body 1, which is integrally connected to each other by connecting pieces 41, 41 of small cross section, from an elastically deformable synthetic resin, and forming the connecting holes 25, 25 or the vicinity thereof at the center. A step of expanding the connected bone fragment 1 into a fan shape so that Or the pressure bonding step and the connecting pieces 41, 41 performed at the same time or after this welding or bonding step.
A method for manufacturing a fan comprising the steps of cutting out the connecting pieces 41, 41, and creating creases in the covering paper 2, 2 during or after cutting out the connecting pieces 41, 41.