JPH02147123A - Fin roll for cold roll forming machine - Google Patents

Abstract

PURPOSE:To contribute to the cost reduction of formed products and to easily perform the changing operation of pad pieces by fixing circular pad pieces so as to be changeable freely on the notched part notched the parts near the shoulder of fin rolls. CONSTITUTION:Fin rolls 2 are notched 2a, 2b the parts near both shoulders, in which the pad pieces 10 made separately are fixed and the fin rolls 2 are formed in one piece by fastening with bolts. And the fin rolls are composed so that they are fitted on the recessed part 5a, 5b of the right and left top rolls 3a, 3b and can be rotated coaxially with a shaft 4. In case that the pad pieces 10 are worn or broken, new fin rolls can be formed by becoming in the form that the outside face is altered, if the right and left pad pieces are detached respectively and the pad piece 10 fixed on the left side is fixed on the right side and the pad piece 10 fixed on the right side is fixed on the left side. Thus the pad pieces 10 maintain the twice of service life and the changing operation is easy.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a fin roll for a cold roll forming machine, and in particular, the fin roll is pressed against the left and right free ends of a metal plate bent into a semi-cylindrical shape. This article relates to fin rolls to extend the life of the fin rolls.

[Prior Art] A conventional cold roll forming machine will be explained with reference to FIG. 3 attached hereto. (1) is a cold roll forming machine, (2) is a fin roll, (3aH3b) is a fin 70-/I/(2)
(7) Top rolls located on the left and right sides that are integrally connected to the fin roll (2) and rotate coaxially with the rotation shaft (4). In the figure, the left and right top rolls (
Recesses (5a) (5b) provided on the inner side of 3a) (3b)
and the top roll (3b) is connected by a bolt (6).

In addition, (7a) and (7b) are side rolls, (8) is a bottom roll, (9) is a metal strip bent into a substantially cylindrical shape, and (9a) and (9b) are the metal strips (9). are the left and right free ends of

[Problem to be solved by the invention] The fin roll (
2), in the process of bending the metal strip (9),
The parts where the left and right free ends (9aH9b) of the metal strip (9) are most strongly pressed are worn out or broken. In such a case, the fin roll (2) itself must be replaced. However, since the fin roll (2) is expensive, it causes an increase in the cost of the molded product.

Therefore, a technical problem arises that must be solved in order to form a fin roll that can contribute to reducing the cost of molded products, and it is an object of the present invention to solve this problem.

[Means for Solving the Problems] The present invention was proposed to achieve the above object, and it is an object of the present invention to provide a cold roll forming machine for bending and forming a metal strip. A fin roll for a cold roll forming machine, characterized in that the fin roll to be loaded is notched in the circumferential direction near the left and right shoulders, and a separately manufactured ring-shaped contact piece is fixed to the notch in a replaceable manner. and a fin roll of a cold roll forming machine, characterized in that the said piece is press-fitted into the notch, and the said piece is fixed to the notch with a bolt. It is an object of the present invention to provide a fin roll for a cold roll forming machine characterized by the following.

[Function 1] In this invention, the fin roll is cut out at the portion where the left and right free ends of the metal strip are most strongly pressed. That is, the free end of the metal strip is pressed into contact with the vicinity of the shoulder of the fin roll. Therefore, a notch is made along the circumferential direction near the shoulder, and a separately manufactured ring-shaped piece is press-fitted into the notch, or it is fixed integrally by means such as bolt tightening. do. In such a case, even if phenomena such as abrasion or breakage occur due to the crimping of the free end of the metal strip during cold forming, the worn or breakage portion can be replaced with a separately manufactured contact piece. Therefore, this contact piece can be separated from the notch of the fin roll, and the intact contact piece can be fixed again by the above-mentioned means. Therefore, the cost is much lower than the cost required to replace the entire fin roll, and it can contribute to reducing the cost of the molded product.

[Example] Hereinafter, an example of the present invention will be described with reference to the attached drawings, Figures 2 and 3.
The details will be explained according to the figures. For convenience of explanation, technical matters that are conventionally known will also be explained at the same time, and the same reference numerals will be used for the target parts.

In FIG. 2, the fin roll (2) has notches (2a) and (2b) at both shoulders thereof. However, the notch (2a
) (2b) is formed completely symmetrically with its outer surface (F) CF), so the separately manufactured contact pieces θ 00) fixed to these notches (2a) (2b) are formed in the same shape. Therefore, the corresponding piece (10) is configured to be able to be fixed to any of the notches (2a) and (2b) of the fin roll (2).

Furthermore, the notch (2a) of the fin roll (2) (
In 2b), female screw holes (l 1) (l 1) are opened facing toward the back, and the bolt (+2 (L3) can be screwed into it. This piece (10
) are fitted into the notches (2a) and (2b) to be integrally fixed with the fin roll (2), and the bolt (1 year old) is inserted in the same straight line as the female screw hole (11). insertion hole θ
A wharf is provided. Furthermore, on both the left and right sides of the insertion hole (1→), there is a recess (4) into which the head (!2a) of the bolt θ can be inserted.
) (→ is provided.

In the case of the above embodiment, notches (2a) (2h) L are formed near both shoulders of a conventionally known fin roll, into which the contact pieces Qo) (1o) are inserted, and bolts (I 1) (I 1 )
are joined to integrally form a fin roll (2).

Then, the recesses (5) of the left and right top rolls (3aH3b)
a) It is constructed so that it can be fitted onto (5b) and rotated coaxially with the shaft (4), but the means for attaching the fin roll (2) should not be limited to this. Therefore, the above-mentioned piece (+o)
Qo) is attached to the left and right free ends (9) of the metal strip (9).
aH9b) may become pressure pipe and wear out or break the corresponding piece Qo)Qo), but in such cases, remove the left and right pieces Qo)Qo) respectively and fix them on the left side. The piece (10) is on the right side, and the piece (10) that was stuck on the right side is
If 10) is hardened to the left, the outer surface will be changed and a new fin roll will be formed. Therefore, the piece (10) will have twice the lifespan.

At this time, the bolt (insertion hole θ1 of 0) is attached to the piece (10).
Since the head (12a) of the bolt (Y) can be inserted into the four parts (I/I) provided on both sides of the will never occur.

Further, FIG. 3 shows an aspect of another embodiment, in which a recess (2c) is formed by cutting out the vicinity of the shoulder of the fin roll (2).
)(2d) are provided symmetrically. Then, the contact piece (IOa) (10
a) is press-fitted. Various means of press-fitting can be considered, but for example, the recess of the fin roll (2) (
2c) (2d) side is heated and the above piece (1) is heated here.
0a) (10a) are respectively inserted and cooled, the two are firmly fixed. In this way, a fin roll similar to the conventional one is configured, and the left and right free ends (9i) (
9b) is crimped onto the corresponding piece (10a) (10a). At this time, if the corresponding piece (10a HIOa) is worn or broken, the corresponding piece (lea) (10a) is forcibly separated, and a new contact piece (10a) (IOa) is fitted again using the above-mentioned method. They can be combined and used as a fin roll.

Therefore, the present invention can be modified in various ways without departing from the spirit of the invention, and it goes without saying that the present invention extends to such modifications.

[Effects of the Invention] According to the present invention, a portion near the shoulder of a conventional fin roll is cut out, and a piece is integrally fixed thereto.

However, since this piece is replaceable, during the process of processing the metal strip into a cylindrical shape, the left and right free ends of the metal strip may be crimped onto the piece, causing wear and tear on the piece. If the fin roll breaks or breaks, the piece can be separated from the notch and removed, and only the piece can be replaced and used, so there is no need to replace the entire fin roll as in the past. This can contribute to reducing the cost of molded products, and the replacement of the corresponding piece can be performed easily and quickly.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the main parts of a conventional cold roll forming machine, and FIGS. 2 and 3 are longitudinal sectional views showing respective embodiments of the fin roll of the present invention. (1)...Cold roll forming machine (2)...Fin roll (3aH3b)...
・Top roll (2a) (2b)...notch part
(2c) (2d)... Concavity (10) (10z)
・・・・・・Figure 2 of this piece

Claims (3)

[Claims] (1) In a cold roll forming machine that bends and forms a metal strip, the vicinity of the left and right shoulders of the fin roll interposed between the left and right top rolls is cut out in the circumferential direction, and a separate A fin roll for a cold roll forming machine, characterized in that a ring-shaped contact piece is fixed in a replaceable manner. (2) The fin roll for a cold roll forming machine according to claim 1, wherein the contact piece is press-fitted into the notch. (3) The fin roll for a cold roll forming machine according to claim (1), wherein the piece is fixed to the notch with a bolt.