JPH054909Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is a roll forming device, especially a method for reliably joining both overlapping edges of architectural metal rectangular pillars when roll forming them from long plates. The present invention relates to a wet roll forming apparatus.

[Prior Art] Generally, a long metal plate is roll-formed into a cylindrical shape to form a square column, which is often used mainly as a stud for construction.

Conventionally, in order to manufacture the above-mentioned prisms, they were formed using a roll forming apparatus disclosed in Japanese Patent Application Laid-open No. 54-112776. The polymerized parts are intertwined with each other, and this polymerized part is sandwiched between an inner mandrel roll and an outer sizing roll and sent out.
The overlapping parts are tightened.

However, according to this roll forming device,
There was a drawback that groove marks were formed on the outer surface of the overlapping portion by the protrusions of the sizing roller.

Therefore, the present inventor devised a roll forming apparatus as shown in FIGS. 4 and 5. This roll forming device 1 forms concave circumferential grooves 2a and 3a in the center sides of outer rollers 2 and 3, respectively, and rotates these outer rollers 2 and 3 with shafts 4 and 4 to form a long metal plate material 5. is bent to form a rectangular prism 50. The prism 50 is used to join the longitudinal edges 5a, 5b of the plate material 5 using a joining jig 6 as shown in FIG. 5 when the plates 5 are bent between the outer rollers 2, 3. Note that one edge 5a is deformed inwardly into a U-shape, and the other edge 5b is deformed outwardly into an inverted U-shape, intertwined with each other from above and below, and sent to the roller side. It will be done.

The joining jig 6 has a main body 7 supported and fixed between the outer rollers 2 and 3 by a rod 8, and the main body 7 is approximately U-shaped, with both edges 5a and 5b in the recess 7a.
a supporting portion 7b that supports the superimposed portions, and a gear-shaped meshing roller 9 that crimps and joins this superposed portion 5c.
an internal roller 9 consisting of a feed roller 9b integrally provided beside the engaging roller 9a.

To explain the process of forming the square column 50 by the roll forming device 1, both edges 5a, 5 of the plate material 5
b are entangled with each other and sent to the roller side, and are continuously supplied to the gap between the outer rollers 2 and 3 and the inner roller 9 of the joining jig 6, and are temporarily shaped by the support part 7b of the joining jig main body 7. After the both edges 5a and 5b are overlapped, the overlapping portion 5c is crimped with an engaging roller 9a to firmly join the edges 5a and 5b of the plate material 5.

[Problems to be solved by the invention] However, according to the roll forming apparatus described above, the plate material portion on the feed roller side is Due to the high speed of feeding and the friction between the engaging roller 9a and the overlapping portion 5c, the prismatic column 50 to be fed out becomes twitched on one side, making it impossible to feed it out in a straight line, making it impossible to obtain high-quality products. The point was hot.

This invention was devised to solve the above-mentioned problems, and it is possible to reliably caulk and firmly join the overlapping parts of both edges of plate materials, and to obtain a high-quality product by roller forming. The purpose is to provide equipment.

[Means for Solving the Problems] The roll forming device of the present invention has an internal roller that is connected to a gear-shaped meshing roller that corresponds to the inner surface of the overlapped portion of both edges of a long plate material, and a diameter larger than that of this meshing roller. It consists of a feed roller that is positioned next to this engaging roller and holds the inner surface of the edge of the long plate material that has been deformed in the outward direction, and each of these rollers with different diameters is held by a common shaft and is independent It was made rotatable.

[Operation] The overlapping portions of both edges of the plate material are reliably crimped by the meshing rollers and are firmly joined. Also, since the feed roller and engagement roller rotate independently,
The circumferential speed of each of these rollers becomes the same as each roller rotates in accordance with the feeding speed of the plate material, and the square column is sent out smoothly in a straight line without causing any twitching on one side.

[Embodiment of the invention] Hereinafter, an embodiment of the roll forming apparatus of the invention will be described in detail with reference to FIGS. 1 to 3.
Incidentally, the same or corresponding parts as in the conventional example shown in FIGS. 4 and 5 are given the same reference numerals, and the explanation thereof will be omitted.

In each figure, the roll forming device 10 is shown with shafts 4, 4.
External rollers 12 and 13 attached to the bonding jig 1
6. The main body 7 of this joining jig 16 has a gear-shaped meshing roller 19a and a feed roller 19b, which has a diameter larger than that of the stiff meshing roller 19a and is located next to the meshing roller 19a, held by a common shaft 19c. The inner roller 19 is rotated independently by each of these rollers.
is configured.

Concave-shaped circumferential grooves 12a and 13a are formed in the center sides of the external rollers 12 and 13, respectively, and in the circumferential grooves 12a, the overlapping portions 5c of both edges 5a and 5b of the plate material 5 and the area corresponding to the vicinity thereof are formed. A protrusion 15 is formed.

Further, on both end sides of the external rollers 12 and 13, corresponding protruding outer peripheral portions 12b and 12 are provided.
b, 13b, 13b and concave outer peripheral portions 12c, 12
c, 13c, and 13c are formed, and are configured to mesh with each other and rotate.

In the above configuration, the process of forming the prism 51 will be explained. First, both edges 5a, 5 of the plate material 5
b are intertwined and sent to the roller side, and the outer rollers 12 and 13 and the inner roller 1 of the joining jig 16
9 and the gap between the joint jig body 7 and the supporting part 7b of the welding jig main body 7.
5b is superimposed, the overlapping portion 5c is crimped by an engaging roller 19a to firmly join both edges 5a and 5b of the plate material 5, and then the plate material 5 is sent out. Further, the feed roller 19b holds the inner surface of the plate material 5 on the edge 5b side.

According to the above embodiment, since the meshing roller 19a and the feed roller 19b of the internal roller 19 rotate independently, the circumferential speed of each roller 19a, 19b corresponds to the feed speed of the plate material 5.
becomes the same by rotating, and the square pillar 51 is not sent out with twitching on one side, but is sent out smoothly in a straight line, and a high-quality square pillar is obtained.

Further, since the protruding portion 15 formed protrudingly in the circumferential groove 12a of the external roller 12 presses the overlapping portion 5c, a shallow groove 52 is formed in this portion of the square column 51, and on the inside side of this shallow groove 52, the overlapping portion 5c are reliably crimped and joined by the engaging rollers 19a, and the contact area with the plate material 5 is increased by the protrusion 15, so that the square column 51 is smoothly fed out.

Also, protruding outer peripheral portions 12b, 12b, 13 corresponding to both end portions of the external rollers 12, 13, respectively.
b, 13b and concave outer peripheral portions 12c, 12c, 13
c and 13c, and are rotated by meshing with each other, so that even if an external force is applied to the shafts 4 of the external rollers 12 and 13 that causes positional deviation in the parallel direction, the protruding outer periphery and the concave outer periphery Since positional displacement can be prevented by meshing with the outer rollers 12 and 13, smooth and reliable operation of the outer rollers 12 and 13 can be achieved.

Although the protruding portion 15 is formed on the external roller 12 according to the above embodiment, even if the external roller does not have the protruding portion 15, the overlapping portion 5 is formed by the meshing roller 19a.
By crimping c, both edges 5a and 5b of the plate material 5 can be firmly joined.

[Effects of the invention] As explained above, according to the roll forming apparatus of the invention, the internal roller is a gear-shaped meshing roller corresponding to the inner surface of the overlapping portion of both edges of the long plate material, and a gear-shaped meshing roller of this meshing roller. It consists of a feed roller which has a diameter larger than the diameter and which is located next to this engagement roller and holds the inner surface of the edge of the long plate material which has been deformed in the outward direction, and each of these rollers having different diameters is held by a common shaft. Since it is made to be able to rotate independently, it is possible to reliably swage the overlapping parts of both edges of the plates and firmly join them, and it is also possible to send out the column smoothly in a straight line. High quality products can be obtained.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an embodiment of the roll forming apparatus according to the present invention, Fig. 2 is an enlarged front view, Fig. 3 is a sectional view of the main parts, and Fig. 4 is a roll proposed by the inventor. Whole perspective view showing the molding device, No. 5
The figure is also a perspective view of the joining jig. 5... Long plate material, 5a, 5b... Edge, 5c...
...Polymerization part, 10...Roll forming device, 12,1
3...External roller, 19...Internal roller, 19a
...Matching roller, 19b...Feed roller, 19c
……shaft.

Claims (1)

[Claims for Utility Model Registration] Two external rollers each having a circumferential groove formed in the center and outer circumferential parts formed on both ends are brought into contact with each other so that the outer rollers rotate. At the same time, an inner roller is arranged between the circumferential grooves of each outer roller. deforms into a U-shape, and deforms the other side outward into an inverted U-shape,
In a roll forming device that entangles and superposes both deformed parts with each other and then sends out the superposed part while being crimped by the internal roller in a post-process, the internal roller is replaced with a gear-shaped meshing roller corresponding to the inner surface of the superposed part. and a feed roller having a diameter larger than the diameter of the engaging roller, which is positioned next to the engaging roller and holds the inner surface of the plate material on the edge side of the long plate material that has been deformed in the outward direction. A roll forming device characterized in that different rollers are held by a common shaft so that they can rotate independently.