JPH01285206A - Folding fan making method - Google Patents

Abstract

PURPOSE:To improve productivity by providing a process of welding the mutual contact portions of cover papers, a process of cutting off connected pieces at the same time as said process or after the same and a process of moving respective skeleton pieces after cutting off the connecting pieces by predetermined amounts relative to the cover paper to align pivot holes with each other... CONSTITUTION:Cover papers 2, 2 are overlaid on both front and back of skeleton piece connecting bodies 1, and when the contact portion of these cover papers 2, 2 are heat welded or pressure-bonded to each other, said connecting bodies 1 and the cover papers 2, 2 are united. Since skeleton pieces 10, 10 and the cover papers 2, 2 are not fixed, they can move relative to each other after cutting off connecting pieces. Also, since the skeleton pieces 10, 10 are located radially, pivot holes 11, 11 formed in the skeleton pieces are aligned with each other by moving the respective skeleton pieces 10 by predetermined amounts in the direction of protrusion. Then, or before that, a main skeleton is mounted: a fan is completed after a process of inserting a pivot in a pivot hole in the main skeleton and the pivot holes 11, 11 in the skeleton pieces to connect pivotably the main skeleton and the skeleton pieces 10, 10 and a process of folding the cover papers 2, 2.

Description

[Detailed description of the invention] [Application field] 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 a synthetic resin bone piece.

[Prior art and its problems] Conventionally, full-scale folding fans using bamboo bone fragments have been manufactured by the following method. First, cover papers (2) and (2) that are slightly larger than the finished dimensions are glued and overlapped, and then
After air drying for a suitable time, fold this covering paper so that it matches the folded state of the folding fan. Next, insert a metal sheet with an insertion part similar to the bone fragment in each part corresponding to the insertion part of the bone fragment. To apply glue between the coated papers by inserting a spatula, the sections are partially opened, and as shown in Figs. the bone fragment (10),
Insert the cane (28) into the cane holes (11) and (11) of (10) and insert these bone fragments (10) and (10).
) is rotatably mounted on the shaft. After kk, fold this semi-finished fan and cover with paper (2).

Finish cutting the periphery of (2) to complete the fan.

However, this method has the problem of poor productivity.

This is because, in the conventional manufacturing method, each manufacturing process requires a track and many steps, and each step must be performed manually. In particular, coated paper (2
), (2) After pasting each other, bone fragments (10), (1
0) must be inserted and fixed separately into predetermined positions.

[Technical Problem] In order to improve production efficiency in a method for manufacturing a fan, the present invention covers bone fragments (10) and (10) with covered paper (2).

(2) The technical problem is to be able to easily arrange it at a predetermined position between the phases W.

[Technical means] The technical means of the present invention taken to solve the technical problem described in F is as follows. ) are arranged radially and at equal angular intervals, and the bone fragments (1G), (10
) of a synthetic resin, forming a bone fragment connecting body (1) in which the end portions q of the bone fragments are connected and integrated by a connecting piece.

Covering paper (2
) and (2) and welding or pressurizing the mutually opposing portions of these covered papers; a step of cutting out the connecting piece, which is carried out at the same time or after this welding or adhering process; and a process of cutting out the connecting piece. After resection, each bone fragment (lO) is moved by a predetermined amount relative to the covering paper (2), (2) in order to align the cannibal holes (11), (11) provided therein. This means that the government has prepared the following:

[Effect] The above technical means works as follows.

The covering papers (2), (2) are overlapped on both the front and back sides of the bone fragment connection body (1), and the mutually opposing parts of the covering papers (2), (2) are heat welded or pressure bonded, and the bone fragments are bonded together. The connecting piece (1) and the covering paper (2) are integrated.

In the above state, the bone fragments (10), (10) and the covering paper (2).

(2) is not in a fixed state, so when you cut out the connecting piece,
Each bone fragment (lO) becomes movable relative to the covering paper (2), (2). Also, bone fragments (10), (10)
are positioned radially, so when each bone fragment (10) is moved by a predetermined distance in the protruding direction, the cannibal holes (11) and (11) formed therein will coincide. After that, or prior to this, the main rib is attached, and the main rib's pinhole and the bone fragment's pinhole hole (11), (1
Step 1) of inserting a cane into the bone fragments (10), (10) and the main bone, and covering paper (2), (2).
After going through the folding process, the folding fan is completed.

Incidentally, since the bone fragments (10) and (10) are arranged radially, in the above-mentioned completed state, the covering paper (2),
(2) is in a state where extraction is stopped for bone fragments (10) and (10).

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

By simply moving each bone fragment (lO) located between heat-welded or pressure-bonded covering paper (2), (2) by a predetermined amount in the protruding direction, bone fragments (1G), (10) t is placed at a predetermined position t, no skill is required as in the conventional method described above, and productivity is therefore improved.

[Example] Next, an example of the present invention will be described based on FIGS. 1 to 17.

In this embodiment, a laminated paper that can be heat-melted is used as the covering paper (2), and a covering paper pasting device shown in FIG. 14 is used. As shown in the figure, this device consists of a coated paper (2),
(2) and the bone fragment connecting body (1), F, the first cushion material (51) attached to the lower surface of the mold (50), and the lower 5 (52
) The covering paper (2), (2) is compressed by the second joint material (53) attached to the upper surface of the bone fragment connection body (1).
It is designed to be welded to.

For this reason, the upper mold (50) and the lower mold (52) are arranged opposite to each other, one lower mold (52) is fixed to the upper surface of the bed, and the other upper mold (50) is attached to an air cylinder. (8
) are raised and lowered at predetermined timings, and the mutual pressing force between these upper molds (5 (1,) and lower molds (52) is set to a predetermined value.

Next, in this example, the bone fragment connecting body (1) is made of a synthetic resin impregnated with stearic acid, and this bone fragment connecting body (1) is made of the required number of pieces, as shown in the tjS1 diagram. Bone fragments (10) and (10) are arranged radially, and the outer peripheral ends of these bone fragments (1G) and (10) are connected to each other by I! l (terminology (12), (+2), piece (13) connecting the inner peripheral ends to each other.

(13), and the bone fragment (10)
.

A pinhole (11) is formed at the end of each of the pinholes (lO) on the pinion attachment side. The bone fragment connecting body (1) is integrally molded as a whole by injection molding.

The main rib (22) is made of synthetic resin, and as shown in FIG. 12, it has protrusions (28) and (28) that correspond to the through holes (29) of the extension piece (21), which will be described later. The main rib (22) is set to be in the proper position of the extension piece (21) when the protrusion (28) is fitted into the through hole (29).

In addition, the coated papers (2) and (2) used in this example are paper (3) with a heat-welding layer (0) made of thermoplastic synthetic resin on one side, as shown in Fig. 2. As shown in Fig. 3, the adhesive plane shape is a star shape that is slightly larger than the unfolded shape of the folding fan, and an arc-shaped notch is formed in the center.The shape of the notch is as follows. , coincides with the inner circumferential arc of the closing shape of the covering paper (2), (2).

The actual production of a fan using the above-mentioned apparatus, main ribs (22), (22), bone fragment connector (1), and covering paper (2), (2) will be described in detail below.

First, as shown in FIGS. 3 and 4, the bone fragment connection body (1) is sandwiched between the covering papers (2), (2),
, (4) and (4) are placed on top of each other so that the inner surface becomes the inner surface, and these are placed as one body on the first surface of the second cushion material (53).

In this embodiment, since the coated papers (2) and (2) are joined together by welding, both the upper die (5G) and the lower die (52) of the coated paper pasting device are heated by the heater. In addition to using a heating type mold that is heated to a predetermined temperature,
Both the cushion material (51) and the second cushion material (53) are heat-resistant silicone rubber plates. In addition, the upper mold (50), in - times of pasting operation,
It is designed to move up and down twice at predetermined timing. Further, in the vicinity of the lower die (52), abutments (56) to (53) for positioning the object to be adhered are provided. Among these, the winning number (5El) and (57) are coated paper (2) as shown in FIG.

(2) The fixed position is set to a predetermined value, and this hit (
5El) and (57) are set so as to abut near the outer peripheral ends of the covering papers (2) and (2) arranged at appropriate positions. Furthermore, the other hit (58), (59)
functions as a positioning means for the connected bone fragment (1), and corresponds to the bone fragments (10) and (1G) located at the outermost side when the connected bone fragment (1) is placed in the proper position. are arranged so that they touch each other.

Therefore, one of the covering papers (2) is placed on the upper surface of the second cushion material (53) so that the heat-welding layer (0 becomes one side), and this covering paper (2) is applied (5 [1), (57
), place the bone fragment connector (1) on the upper surface of this covering paper (2), and place the outermost bone fragments (10) and (1
0) is brought into contact with the abutments (58) and (511), and then the other covered paper (2) is placed over this bone fragment connection body (1).
When placed in the same manner as one covering paper (2), the bone fragment connection body (1) and the covering papers (2), (2) are set at appropriate positions and in a predetermined state.

After that, when the covering paper pasting device is operated, the bone fragment connected body (1) and the covering paper (2), (2) are attached by the first press.
) is pressed between the upper mold (50) and the lower mold (52), and as a result, the covering papers (2) attached to both sides of the bone fragment connection body (1) are They are deformed so that they face each other as shown in the figure. In addition, the upper mold (50) and the lower mold (5
2) is maintained at a predetermined temperature, the coated paper (2)
), (2) are partially welded to each other.Next, when a second press is performed after the first press is completed, the coated paper (2) is partially welded to each other. ), (2
) have been bent inward beforehand, so the heat welding layer (4) is located on the inner surface of these covering papers.

(0 Kan W will be reliably heat-welded in the end. Since the bone fragment connecting body (1) is impregnated with stearic acid, in the above welded state, the bone fragment connecting body (+) and the covering paper (2)
, (2) is not in a fixed state.

After the process described in h, the semi-finished fan to which the covering papers (2) and (2) have been pasted is cut out by a punching machine along the two-dot chain line (C) in Figure 7.
), (B) along with the connecting pieces (1
3), (131vJ cutting removal sult, ffi paper (2
), (2) are punched out in the shape shown in Figure 8. In the punched state, the outermost bone fragments (10) and (1
0), there is an extension piece (21) for attaching the main rib, (
21), and this extension piece (
21) , (2 holes have through holes (2θ), (29
) is formed.

Thereafter, the coated paper (2) is folded using a press die equipped with protrusions that match the folding positions of the coated paper (2) and (2).

When the adhesive area (2) is pressed, the covered paper (
2), Fold lines (20) alternately on both the front and back sides of (2).

(20) is engraved.

Subsequently, the protrusions (28), (28) of the main rib (22) are fitted into the through holes (29), (29) formed in the extension pieces (21), (21), and the protrusions (28) )
, (2B), the protrusion from the covering paper (2), (2) is melted and caulked as shown in FIG. With this, the main bone (22).

(22) is integrally fixed to the extension pieces (21) and (21) at appropriate positions.

Next, cover each bone fragment (10) and (10) with paper (2).
, (2), and the kinematic hole (11) formed therein is moved relative to the main rib (22), (22).
The keyholes (2B) are inserted into the hook holes (11), Ht), and each main rib (22) and bone fragment (10) are caulked so that they can move freely. When you do this, it will look like the one shown in Figure 11.

Then, fold the first sheet of paper (2), (2) along the fold line (20).
.

(20), and the folded portion of the covering paper of the fan in this folded state is compressed as shown in FIG. Then, the folded portions of the covering papers (2), (2) are strongly bent into a folded state, so that the folded state of the folding fan becomes compact.

Incidentally, instead of the bone fragment connection body (1) shown in FIG. 1 used in the above embodiment, a bone fragment connection body (1) as shown in FIG. 15 may also be used. This bone fragment connection body (1) includes bone fragments (10), (1
0) are arranged radially and at equal angular intervals, and the pieces (19) connect only their mutual tip sides.

(19), and the connecting piece (18)
.

(19) is the connection piece (12) of the above example, (12)
It is set wider than that.

In addition, when manufacturing a fan using this bone fragment connection body (1), S11 (5B) and (59) of the above device are
It is formed of uneven parts as shown in Figs. 16 and 17, and the free end side of each bone fragment (10), (1G) is attached with a cane between the protrusions (9), (9). The sides are tightly inserted.

Therefore, when the covering papers (2) and (2) are thermally welded to each other, the bone pieces (10) and (1o) have a connecting piece (19) at the upper end.

Due to (19), the Kaname mounting side has the above convexity! (9),
(9), the bone fragment (10
).

Covering paper (2) with (10) moved out of position.

(2) There is no fixed arrangement.

As mentioned above, in each case a coated paper (2).

Although so-called laminated paper having a heat-welding layer (4) on one side is used for both (2), only one of the coated papers (2) and (2) may be laminated paper.

Further, as the waves f1m(2), (2), it is also possible to employ pressure-sensitive adhesive paper or the like provided with an adhesive layer in areas other than the portions where the bone fragments (lo), (10) are located. 'g! In some cases, plain paper may be pasted with glue. In this case, 2. It is not necessary to heat the mold (50) and the lower mold (s2) to a constant temperature, and the first and second joint materials (51) and (53) may be any cushioning material, and are heat resistant. is not required.

[Brief explanation of the drawing]

Figures 1 to 13 show explanatory diagrams of embodiments of the manufacturing method of the present invention, with Figure 1 being a plan view of the connected bone fragment (1), and Figure 2 being an enlarged sectional view of the covering paper (2). , Figure 3 is a bone fragment connection body (1)
Partially cutaway plan view of the state in which the paper sheets are stacked from the front and back, No. 4
The figures are a sectional view taken along the line AA in FIG. 3, FIG. Figure 7 is a plan view of the covered paper in a welded state, Figure 8 is a plan view of a semi-finished fan, Figure 9 is an external view of the coated paper with concave lines as temporary folds, and Figure 1O is a diagram of the coated paper. An explanatory diagram of finishing folding, Fig. 11 is a plan view of the finished fan, Fig. 12 is an explanatory diagram of the main rib (22), and Fig. 13 is an explanation of the fixing part between the extension piece (21) and the main rib (22). figure,
FIG. 14 is an explanatory diagram of the apparatus used to carry out the present invention,
5 to 17 show explanatory diagrams of the second embodiment of the manufacturing method of the present invention, and FIG. 15 is a plan view of the connected bone fragment (1), w4
ts diagram and FIG. 17 are explanatory diagrams of the hit for supporting and fixing the bone fragment connection body in FIG. 15, FIG. 18 is an explanatory diagram of the conventional manufacturing method, and FIG. 19 is a cross section taken along line DD in FIG. 18. In the figure, (1)...Bone fragment connection body (2), (2)...Covering paper (10), (10)... Bone fragment

Claims (1)

[Claims] Bone pieces (10), (10) having a cantilever hole (11) formed at the end on the side where the cantilever is attached are arranged radially and at equal angular intervals, and the ends of the bone pieces (10), (10) are arranged radially at equal angular intervals. A step of forming a bone fragment connecting body (1) which is integrally connected with each other by connecting pieces from a synthetic resin, and coating paper (2), (2) on both the front and back sides of the required area of the bone fragment connecting body (1). A step of stacking these coated papers and welding or pressurizing the mutually opposing parts, a step of cutting out the connecting piece which is carried out simultaneously with or after this welding or adhering step, and after cutting out the connecting piece, each bone fragment is (10), and the hole (11) and (11)
) A method for manufacturing a folding fan, comprising the step of moving the covering papers (2), (2) relative to each other by a predetermined amount in order to make them match.