JPS5951824B2 - How to attach covering material to fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a fan, and particularly to a method for applying a covering material in a method for manufacturing a fan, in which a covering material is applied to both sides of a bone by a pressure press method. .

This type of fan can be manufactured by applying adhesive to the bone support rod and applying pressure to cover material from both the front and back sides, or by using bamboo or non-welded synthetic resin bones. Using a laminated paper as the covering material, attach the covering material to the bone so that the synthetic resin layers thereof face each other,
A method has been proposed in which the three parts are compressed under heating conditions and the covering material is adhered by welding.

Among these proposals, in JP-A No. 57-64006, as an example, covered paper materials are run intermittently at appropriate intervals, and bones are inserted between these covered paper materials in the welding process. A method has been proposed that performs wear treatment.

Although this known method is suitable for mass production, it is not suitable for high-mix low-volume production if the printing applied to the coated paper has to be changed in small rods.

In the case of high-variety, low-volume production, is it possible to adopt a method in which a pair of covering papers for one fan is applied to the front and back of the bone and attached under pressure? During handling in the pressure adhesion step, the relative position between the covering paper and the bone may shift, resulting in a situation where the covering paper is not affixed to the proper position.

An object of the present invention is to properly fix the relative position between the covering material such as covering paper and the bone, thereby preventing misalignment between the covering material and the bone during the pressurized adhesion process. The technical means of the present invention for solving the above problems is to provide a connecting member that connects the distal ends of bone supports with a side piece member parallel to the handle, and on the other hand, a pair of covering materials are attached at both side edges. They are joined to form a bag or cylinder, the joints are made parallel to each other, a bone support is inserted into the bag or cylinder, and the side members of the connecting member are in a state of frictional engagement between the joints. The material is held in place and adhered under pressure.

According to the above-mentioned technical means of the present invention, since the relative position between the bone and the covering material is maintained under pressure and pasted, no pressure is applied from the step of inserting the bone into the bag or cylinder. When handling the combined bone and dressing material when moving to the pressure bonding process, for example,
Temporary packing work of these assemblies to mountain range J etc., or
It is possible to prevent the inconvenience of the covering material shifting from the bone during the work of inserting it into a pressure adhering device.

Hereinafter, details of embodiments of the present invention will be described based on the drawings.

In this example, the covering paper as a covering material is applied to the bone by heat welding under pressure, and the covering paper 1a, l
As b, one or both of them are made of laminated paper, and the surface facing the other covering paper is made of a synthetic resin layer such as polypropylene to form the bag body A.

This bag A is manufactured by placing a pair of rectangular or rectangular covering papers 1a and 1b large enough to cover bones in the above relationship, and heating and pressing the sides and bottom within a small range. . This results in a bag body in which the top side becomes the open side 2, and the side and bottom sides become the joining sides 3a, 3b and the joining bottom side 4.
(Fig. 1) The center of the joint base of this bag body is connected to bone B, which will be described later.
cut out according to the shape of the connecting piece 5 to form a notch 6,
The bag is configured so that the notch 6 is also open. At the same time, the upper ends of the joining sides 3a and 3b are also obliquely cut off as unnecessary parts to form a bag body A as shown in FIG. Next, the bone B is injection molded into the shape shown in FIG.
An arc rod 8 is connected to the upper end of the rod, and a handle 7 is joined to the center of the arc rod.

Further, a large number of support rods 9, 9 are arranged radially from the center of the arc-shaped rod toward the opposite side of the handle 7, and their tips are connected to the outer frame 10. Further, the outermost supporting rods 9a and 9b are the shortest, and their tips are individually connected to the tips of the arc-shaped rods 8, and the adjacent inner sides of these connecting portions are connected by connecting pieces 5.

This connecting piece 5 is formed in an upwardly convex circular arc shape and connects each support rod 9.
, 9 is also integrated with the vicinity of the proximal end, and furthermore,
Outer frame] 0 has a pair of side sides 11a, 11b parallel to the handle 7
The distance between these side edges 11a and 11b is appropriately set in accordance with the inner distance between the joining sides 3a and 3b of the bag. The bones of the above shape are integrally formed by injection molding (7. be.

The bone produced as described above is inserted from the upper open side 2 in a proper posture, the handle 7 is made to protrude from the arc-shaped notch 6, and the connecting piece 5 is fixed close to the outside of the notch 6. do.

At this time, since the joining sides 3a and 3b of the bag body A are properly set to match the mutually parallel side sides 11a and 11b of the bone, both are in a state of frictional engagement, The half portion is tightly fitted and fixed to the bag body B as described above. After that,
Insert into a heat welding device as a pressure pasting device, and cover paper 1
When heated heat-resistant elastic plates 12, 12 made of sponge, silicone rubber, etc. are pressed from both upper and lower surfaces of a, 1b, only the covering papers 1a, 1b located between the support rods 9, 9 are welded to each other.

In this welding process, since the bone A contains a welding inhibitor, there is no welding between the covering papers 1a and 1b and the support rods 9 and 9, and when the covering papers 1a and 1b are left to cool naturally after the welding process, the covering paper 1a ,1b
Even if a shrinkage difference occurs between the mutually welded portions and the supporting rods 9, 9, both can be contracted independently of each other, so that wrinkles due to the shrinkage difference can be prevented. After the above welding is completed, punch out the outer shape along the arc-shaped rod 8, and the outer shape is finished as a fan.
When this is subjected to finishing treatments such as edge wrapping, the fan is completed.

In the above embodiment, the covering papers 1a and 1b are attached by heat welding, but the covering paper is attached by pressure means to the bone B, which has been semi-dryly applied with adhesive to the support rods 9, 9. Needless to say, it can also be used in other ways. Also,
In the illustrated embodiment, the bottom part of the bag A is also welded, but this part does not necessarily need to be welded, and even if the bag A is replaced with a cylindrical body, the same effect as above can be obtained. .

In this case as well, the outer distance between the side edges 11a and 11b of the bone B is set to match the distance between the joining sides 3a and 3b of the cylinder, and the notch 6 is also achieved in the same manner as in the previously described embodiment. It is necessary to do so. In the case of the illustrated embodiment, the outermost support rods 9a and 9b among the support rods 9 and 9 are not connected to the adjacent support rods by the outer frame 10, but if they are connected by the outer frame, the outermost support rods 9a and 9b will be Ripples appeared on the surface of the fan, and these ripples did not disappear even after finishing punching.

According to the bone structure of the above embodiment, such inconvenience is also eliminated. Further, as a manufacturing procedure for the bag body A, covering papers 1a and 1b previously punched into a predetermined shape may be joined together by welding or the like as shown in FIG. 2.

Furthermore, it goes without saying that sheet materials other than paper can be used as the covering material.

[Brief explanation of drawings]

Figures 1 and 2 are explanatory diagrams of the manufacturing process of bag A according to an embodiment of the present invention, Figure 3 is an explanatory diagram of bone B used therein, and Figure 4 is an illustration of bone B inserted into bag A. An explanatory diagram of the state, and FIG. 5 is an explanatory diagram of the adhesion process, in which A... the bag body, B...
...Bone, 1a...Covered paper, 1b...
Covering paper, 2...Open side, 3a...Joining side, 3b...Joining side, 6...Notch.

Claims (1)

[Claims] 1. In the case where the covering material is applied by applying pressure to the bone support rods 9, 9, a connecting member that connects the tips of the bone support rods is provided with a side member parallel to the handle, and a pair of The covering materials are joined at both side edges to form a bag or cylinder, the joints are made parallel to each other, a bone support rod is inserted into the bag or cylinder, and the side members of the connecting member are joined. A method for attaching a covering material to a fan, in which parts are held in a state of frictional engagement and attached under pressure.