JPH0373442B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a method and apparatus for manufacturing various bent objects such as steamers by layering materials on a cylindrical frame that forms a part of the cylindrical frame. be.

The object of the present invention is to provide a method for easily and firmly forming frame materials such as steamers rolled in layers, and a device capable of carrying out the method with a simple structure. It's about doing.

An embodiment of the present invention will be described below with reference to the drawings. The steamer illustrated in Figures 1 and 2 consists of a main body 1 and a lid 2. The main body 1 has a cylindrical frame 3 and a bottom 4 made of bamboo rods, and the lid 2 has a cylindrical frame. 5 and a cover 6 woven from bamboo material. These frames 3 and 5 are molded using the manufacturing apparatus of the present invention.

First, this manufacturing apparatus will be described with reference to FIGS. 4 and 5. A pair of rollers 22 as fulcrum members are supported at one end of the underframe 21 in a vertical state facing each other. An air cylinder 24 as a traction device is fixed on the movable plate 23 which is movably mounted. A bracket 25 attached to the tip of the piston rod 24a of the air cylinder 24 supports a pulling roller 26 in a vertical position. A band-shaped belt 28 is placed on the workbench 27 outside the two fulcrum rollers 22, and is wound around the outermost circumference of the material W as shown by the imaginary line in FIG. The winding part 28a
Both winding end portions 28b are inserted between both fulcrum rollers 22, and an extension portion 28c of both winding end portions 28b is connected to a hook belt 29 that is wound around the pulling roller 26. Then, when the piston rod 24a of the air cylinder 24 retreats in the direction of arrow A, both wrapped end portions 28b are pulled as shown in FIG. The diameter is reduced. Although the belt 28 is a leather belt, it may also be a textile belt or a rubber belt.

Next, in addition to the manufacturing process of the steamer illustrated in FIGS. 1 and 2, the process of molding the frames 3 and 5 forming a part thereof using the manufacturing apparatus will be explained in 6th to 7th steps.
To explain this with reference to FIG. 12, as shown in FIG. 6, narrow cylindrical bodies 7 and 8 and wide cylindrical bodies 9 and 10, which are made by bending strip plates, are prepared, and they are layered with each other. In order to overlap the innermost reference cylinder 7, both cut ends 7a of the innermost reference cylinder 7 are shaped in advance so that they can butt against each other as shown in FIG. 7, and the three outermost joined cylinders 8 are ,9,
Both cut ends 8a, 9a, 10a of 10 are formed thinly so that they can be overlapped with each other as shown in FIG. Then, adhesive is applied to the overlapping surfaces of the cut ends 8a, 9a, 10a of the joint cylinders 8, 9, 10. Further, on the outer periphery of the reference cylinder 7, which has both cut ends 7a abutted against each other to form an annular shape, each joined cylinder is formed by overlapping both cut ends 8a, 9a, and 10a with adhesive to form an annular shape. 8,
9 and 10 are layered one after another, and the winding portion 28a of the belt 28 is wound around the outermost circumference of this material _W1 as shown in FIG.

After that, the piston rod 2 of the air cylinder 24
When pulled by 4a, the diameter of the winding portion 28a of the belt 28 is reduced, and the reference cylinders 8, 9, and 10 are successively crimped. When this pressure-bonded state is maintained, the adhesive dries after a predetermined period of time, resulting in a material _W1 in which the cylindrical bodies 7, 8, 9, and 10 are integrated, as shown in FIGS. 7 and 8.
As described above, the belt 28 is made of a soft material such as leather and has some elasticity, so it easily conforms to the circumferential shape of the material _W1 and can provide sufficient tightening force. Note that when the belt 28 is pulled,
When the winding part 28a of the belt 28 is hit or pushed in the direction of arrow B in FIG. 5, the restoring force generated in the winding part 28a causes the winding part 28a to be wrapped around both ends 28b.
It is desirable to give a runout using the fulcrum as the fulcrum. This deflection further improves the tightness of the winding portion 28a.

The thus formed material W ₁ is cut according to the required width dimension and number of layers, and both upper and lower inner frames 11 and 1 are used as a reference cylinder as shown in FIGS. 9 and 11.
2, 13 and 14. Further, as shown in FIGS. 9 and 11, wide cylindrical outer frames 15 and 16 are prepared as joint cylinders made by bending strip plates, and both cut ends 15a and 16a thereof can be overlapped with each other. Form into a thin layer. Then, this cut end portion 15a,
Apply adhesive to the overlapping surfaces of 16a. Furthermore, as shown in FIGS. 10 and 12, the upper and lower inner frames 11 and 12, 13 and 14 are positioned inside the upper and lower edges of the outer frames 15 and 16, and are stacked in layers, and these materials W ₂ , W ₃ are crimped with the belt 28 in the same manner as described above, and the cut ends 15a, 16a of the outer frames 15, 16 are adhered to each other. These materials W ₂ and W ₃ are the frames 3 and 5 of the steamer, respectively.
Become a part of.

After that, both the upper and lower inner frames 11 and 12, 13 and 14 are removed from the outer frames 15 and 16, and the outer frames 15 and 1
Both sides of the overlapping portion of the cut ends 15a, 16a of 6 are tied with bark 17 as shown in FIG. Then, as shown in FIGS. 10 and 12 again, the outer frame 15,
Upper and lower inner frames 11 and 12, 1 are placed inside the upper and lower edges of 16.
Incorporate 3 and 14. At this time, the bottom part 4 and cover 6 of the steamer are installed between the upper and lower inner frames 11 and 12 and between 13 and 14, respectively. Furthermore, as shown in FIG. 2, in the frame 3 of the main body 1, a cylindrical lining 18 is fitted inside the upper inner frame 11, and its lower edge presses the bottom 4 to connect it to the lower inner frame 12. be held in between. At this time, a portion of the lower surface of the bottom portion 4 is locked in a recess 12a on the lower inner frame 12 shown in FIG. Moreover, the frame body 5 of the lid body 2
In this case, a cylindrical lining 19 is fitted inside the lower inner frame 14, and the cover 6 is held down by its upper edge and held between it and the upper inner frame 13. lastly,
As shown in FIG. 1, a wire 20 is passed through and fixed in order to firmly integrate each layer of the frames 3 and 5.

Although the steamer has two tiers consisting of the main body 1 and the lid 2, the main body can be molded in the same way even when one or more main bodies are incorporated between these to form a plurality of tiers.

As described in detail above, in the manufacturing method according to the present invention, both cut ends 8a to 1
One or more joined cylindrical bodies 8 - 0a, 15a, 16a stacked on top of each other via adhesive and formed into an annular shape
10, 15, and 16 are stacked in layers, a belt-shaped belt 28 is wound around the outermost circumference, and then, with both wrapping ends 28b of this belt 28 supported on the outside, the belt 28 is wound. The winding end portion 28b is pulled so as to reduce the diameter of the portion 28a, and each of the cylindrical bodies 7 to 10, 11 and 12 and 15, 13 and 14 and 1
6 to each other and bonded cylinder bodies 8 to 1.
Both cut ends 8a to 10a, 15 of 0, 15, 16
A and 16a are glued together to form a cylindrical material W ₁ ,
Since W ₂ and W ₃ are used, there is an effect that the materials W ₁ , W ₂ , and W ₃ of the frames 3 and 5 of the steamer and the like can be easily and firmly formed by wrapping them in layers.

Further, in the manufacturing apparatus according to the present invention, a pair of fulcrum members 22 are provided facing each other, and two or more cylindrical bodies 7 to 10, 11 are arranged outside of both fulcrum members 22.
and 12 and 15, 13, 14, and 16, and both wrapping ends 28b of the winding portion 28a are inserted between both fulcrum members 22, and both wrapping ends of this belt 28. The part 28b is wrapped in the winding part 2
Since it is constructed from the cylindrical body device 24 that pulls the cylindrical body 8a so as to reduce its diameter, the manufacturing method described above can be carried out with a simple structure.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a steamer molded using the manufacturing method of the present invention, FIG. 2 is an assembled sectional view thereof, and FIG. 3 is a perspective view showing the bottom inner frame of the frame of the steamer body. FIG. 4 is a side sectional view showing the manufacturing apparatus of the present invention, FIG. 5 is a plan view thereof, FIG. Figure 7 is an assembled plan view of each cylinder, Figure 8 is an assembled sectional view, Figure 9 is an exploded perspective view showing both the inner and outer frames that form the frame of the steamer body, and Figure 10 is an exploded perspective view of the inner and outer frames. FIG. 11 is an exploded perspective view showing both the inner and outer frames forming the lid of the steamer, and FIG. 12 is an assembled sectional view of the inner and outer frames. Main body…1, lid…2, frame…3, 5, reference cylinder…7, joint cylinder…8, 9, 10, cut end…7
a, 8a, 9a, 10a, inner frame (reference cylinder)...1
1, 12, 13, 14, outer frame (joint cylinder)...1
5, 16, Cut end...15a, 16a, Roller (fulcrum member)...22, Air cylinder (traction device)
...24, Traction roller...26, Belt...28, Winding section...28a, Winding end...28b, Material...W ₁ ,
_W2 , _W3 .

Claims (1)

[Claims] 1. Annularly formed reference cylinders 7, 11 and 12, 1
3 and 14, both cut ends 8a to 10a, 1
One or more joined cylinders 8 to 10, 1 formed by stacking 5a and 16a on top of each other with an adhesive and forming an annular shape.
5 and 16 are stacked in layers, a belt-shaped belt 28 is wrapped around the outermost circumference, and then this belt 28
While supporting both winding ends 28b of the belt 28 on the outside, pull the winding ends 28b so as to reduce the diameter of the winding part 28a of the belt 28.
0, 11, 12 and 15, 13, 14 and 16 are pressed together, and the joint cylinders 8 to 10, 15,
Both cut ends 8a to 10a, 15a, 16a of 16
A method for producing frame materials for various curved objects, characterized in that the materials are bonded together to form cylindrical materials W ₁ , W ₂ , W ₃ . 2 When the belt 28 is pulled, the winding part 2 of the belt 28
A method for manufacturing a frame material for various curved objects according to claim 1, wherein the winding end portions 8a are given a deflection with the both wrapped ends 28b as fulcrums. 3 A pair of fulcrum members 22 provided opposite each other,
Two or more cylindrical bodies 7 to 1 are provided on the outside of both fulcrum members 22.
0, 11, 12, 15, 13, 14, and 16.
A belt-shaped belt 2 with b inserted between both fulcrum members 22
8, and a pulling device 24 for pulling both winding ends 28b of the belt 28 so as to reduce the diameter of the winding portion 28a.