JPS60174220A - Manufacture device of core material - Google Patents

Abstract

PURPOSE:To manufacture a core material at a high speed by providing a pair of gear bodies for shearing a thin band steel at a prescribed pitch by leaving a connecting part, and a pair of rolling rollers to which a chisel-shaped projection for making a connecting part contact by pressing has been installed annularly. CONSTITUTION:A thin band steel 5 fed from a feed roller 6 is shorn extending over the full width by teeth 14, 17 which have notched an involute gear, by leaving a connecting part passing through grooves 15, 18, which it passes through gear bodies 11, 12. On one roll of rolling rolls, chisel-shaped projections of two places are provided annularly. The thin band plate 5 which has passed through the gear bodies 11, 12 is fed to the rolling roll. By the chisel-shaped annular projection of the roll, only the connecting part is rolled, and the shorn part is expanded. Accordingly, a core material whose connecting part is cut easily is manufactured at a high speed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a steel core material used for a core metal of an automobile welt.

Is automotive welt used for automobiles? This is a component made of thermoplastic resin or rubber and having a shape roughly shown in FIG. This welt 1 is attached to a U-shaped base 2 at a connecting portion 4' as shown in FIG.
The core bar 3 includes a core bar 3 in which grooves 4 are bored at a predetermined pitch in the longitudinal direction over the entire width, leaving the entire width, so that it can be bent at any position in the longitudinal direction.

Conventionally, the method for producing this type of core metal is to first punch a small groove in the thin strip steel using a punching press,
It was common practice to then roll the entire thin steel strip using rolling rolls to enlarge the grooves. However, with such a punching press, only mild steel had to be used as the core material. Furthermore, the punched parts become wasteful, which is not desirable from the standpoint of effective use of resources.

In addition, it is necessary to separately provide a mechanism to synchronize the punching operation and the strip feeding operation, which is complicated in terms of equipment and operation.Also, the punching operation itself is slow and requires a considerable amount of time to go back and forth. The drawback was that it was difficult to achieve continuous and high-speed core metal manufacturing because of the forced operation. Furthermore, the connecting portion 4'
Since it is difficult to cut and break, it has the disadvantage that the welt is difficult to bend.

The present invention has been made in view of these conventional drawbacks, and includes: a feeding roller for thin strip steel; A pair of gear bodies that shear the entire width of the thin steel strip at a predetermined pitch in the longitudinal direction, leaving a connection part along the gear body, and a chisel-shaped protrusion that is pressed against the connection part of the thin steel band that passes through this gear body. and a pair of rolling rollers that have been modified, and the gear body is provided with in&lj neat teeth adjacent to each other with a small width of thin strip steel near the pitch circle, at a pitch of one to several times the shear pitch. The present invention provides an apparatus for manufacturing a core material, which is characterized by a gear body having a shape of a cylindrical shape.

An embodiment of the apparatus of the present invention shown in FIGS. 3 to 7 will be described below.

In this embodiment, as shown in FIG. 3, the thin strip steel 5 is driven by an appropriate drive source such as a feed roller 6 and a motor 7, and the thin strip steel is fed from the feed roller 6. 5 at a predetermined pitch in the longitudinal direction, and a rolling roller 10 that is similarly driven by an appropriate drive source such as a motor 8 and rolls the thin steel strip passing through the gear body 7. . The core material formed after rolling is either wound up by a take-up roller, or sent to a bending rod to be shaped into a U-shape, and traditionally, it is sent directly to a welt extrusion molding machine. It's okay.

As shown in FIG. 4, the gear body 9 is each supported by a bearing, and the inzelute gears 16 and 19 are mounted on both sides of the body.
Two gear bodies of the same shape interlocking with each other 11.
It consists of 12.

13 is a chuck for connecting the gear body 11 and the drive source 7.

Is it in the center of gear body 11? Is it the same shape as the lute gear 16? Teeth 14 are notched so that the lute gear is close to the reference pitch circle with a width smaller than the thickness of the thin strip steel, and the teeth 14 are provided at the same pitch as the shear pitch of the thin strip steel. Grooves 15 are formed at two locations in the width direction of the teeth 14 by cutting out tooth portions.

Similarly, the gear body 12 has notch teeth 17 that are the same as the teeth 14.
, and a circumferential groove 18 having the same shape as the groove 15.

Examples of the shape of the notch teeth 14.17 include those shown in FIGS. 5 and 6, for example. That is, in the example shown in FIG. 5, the teeth 14 and 17, which are notched in a substantially planar manner near the reference pitch circle of the in-and-lute teeth, are close to each other with a width smaller than the thickness of the thin strip steel 5. The strip 5 is sheared in the vicinity of the teeth 14.17, one pitch at a time between the teeth 14.17.

In the example shown in FIG. 6, a transingerol tooth 14.17 is provided, which is formed by further chamfering one side of the tooth that is notched in a plane near the reference pitch circle of the inner, 3r + 7-teeth tooth.
One proximal portion 21 of 4.17 is adjacent with a width smaller than the thickness of the ribbon steel 5, and the other proximal portion 22 is adjacent with a width larger than the thickness of the ribbon steel 5. The ribbon steel 5 is sheared every two pitches of the teeth 14.17 only in the proximal portion 21.

Returning to FIG. 4, 20 is a gear clearance fine adjustment screw.

FIG. 7 is a diagram showing the configuration of the rolling roll 10, in which two chisel-like protrusions 23 are provided around one rolling roll.

The thin ribbon 5 fed from the feeding roller 6 passes through the gear body 11
．． 12, it is sheared over its entire width by the teeth 14.17, leaving a connection 4' passing through the groove 15.18. The thus sheared ribbon steel is passed through rolling rolls 10.
The chisel-like protrusion rolls only the connecting part 4', widening the sheared part and forming a groove.
A core material in which the connecting portion 4' is easily cut and damaged can be obtained.

In addition, a mechanism for synchronizing the shearing operation by the gear body 9 and the ribbon steel feeding operation is no longer necessary, and the core material can be manufactured continuously and at high speed (four times or more speed than in the case of punching Sores). be able to. Moreover, it is possible to eliminate waste in the punching part.

[Brief explanation of drawings]

FIG. 1 shows the structure of the welt, and FIG. 2 shows the structure of the metal core. 3 to 7 are diagrams showing the configuration of an embodiment of the device of the present invention, in which FIG. 3 is a schematic diagram of the device, FIG. 4 is a partially sectional front view of the gear body, and FIGS. FIG. 6 is a schematic diagram showing the shape of the teeth of the gear body, and FIG. 7 is a front view of the rolling roll. 1... Welt, 3... Core metal, 5... Thin strip steel, 6
...Feeding roller, 7,8...Motor, 9...Gear body, 10...Rolling roller, 11.12...Gear body, 14°17...Notch tooth, 15.18 ...Groove, 1
6.19... Occlusal tooth, 21.22... Proximal part, 23
... chisel-like process. Salt 1 diagram 2nd side

Claims (1)

[Claims] Shearing the entire width of the thin strip steel at a predetermined pitch in the longitudinal direction, leaving a connecting portion along at least one longitudinal line of the thin strip steel fed by the feeding roller and the feeding roller. The gear body includes a pair of gear bodies, and a pair of rolling rollers equipped with chisel-shaped protrusions that are pressed against the connecting portion of the thin strip steel passing through the gear bodies, and the gear body has a thin strip near the pitch circle. Ing notched closely to each other with a width smaller than the thickness of the steel strip
An apparatus for manufacturing a core material, characterized in that the gear body is a gear body in which lute teeth are provided at a pitch one to several times the shear pitch.