JPS62104641A - Method for forming irregular shaped strip - Google Patents

Abstract

PURPOSE:To improve a productivity by setting a material of a strip or a band plate between a planetary roll and a receiving base by performing alternately to roll by the planetary roll and to feed to the longitudinal direction of the material for increasing the forming speed of the irregular shaped strip sufficiently. CONSTITUTION:The material 2 of the strip or a band plate is arranged on the rugged surface of the receiving base 1 and on the opposite side of the receiving base 1 of the material 2, the planetary roll 3 fitted on a rotating body 6 is installed so that the axis of rotation is nearly in coincident with the longitudinal direction of the material 2. In case of forming, the planetary roll 3 is moved rotatively across the longitudinal direction of the material 2 by rotation of the rotating body 6 to deform the material 2 in its width direction. When the prescribed forming is finished, the material 2 is fed at a constant speed and the pressurized expanding rolling is repeated by the planetary roll 3 to obtain the required irregular shaped strip K. In this way, the rolling speed is sufficiently increased to improve the productivity.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to metal strips with irregular cross sections, such as phosphor bronze irregular strips used in connectors and copper irregular strips used in semiconductor lead frames. This relates to a molding method.

[Conventional technology]

FIG. 17 is a perspective view showing a conventional method of forming irregularly shaped strips by rolling, as disclosed in, for example, Japanese Patent Application Laid-open No. 58-179528, and FIG. 18 is a cross-sectional view taken along line A-A.
1) is a receiving mold, (2) is a raw material, and (3a) is a rolling roll.

The conventional method for forming irregularly shaped strips is to use a receiving mold (1) with unevenness.
Place the material (2) on the mold (1) for receiving the material (2).
A rolling roll (3a) having an axis that coincides with the longitudinal direction of the material (2) is placed at a position facing the material (2). The rolling roll (3a) is repeatedly traversed in a straight line in a direction intersecting the longitudinal direction of the material (2) to form the bone between the mold (1) and the rolling roll (3a).
The material (2) located in the narrow part of 3a) is stretched in the width direction to reduce the wall thickness. By alternately repeating the transverse movement of the rolling rolls (3a) and the feeding of the material (2) in the longitudinal direction, a stepped shape is imparted to the material (2) and a deformed strip is formed. In this case, a certain length of the material is processed by one traverse movement of the rolling roll (3a). Therefore, the forming speed of the irregularly shaped strip by this method is proportional to the number of traverse operations per unit time.

[Problem that the invention seeks to solve]

Since the conventional method for forming deformed strips is configured as described above, the rolling roll (3a) which receives a large rolling load and the structural members supporting the rolling roll (3a) have to have considerable weight and weight in order to obtain the necessary strength. However, when these integral parts are moved repeatedly, it is necessary to repeatedly eliminate a large inertial force and apply a large driving force, which makes it difficult to sufficiently increase the number of times per unit time of the traverse movement. . Therefore, the machining speed, which is proportional to the number of traverse operations, cannot be sufficiently increased. Further, at the position (4) where the rolling roll (3a) starts rolling the material, the material (2) is rolled onto the rolling roll (3a).
It may be pushed out to the advancing side of the machine, causing it to come off the processing line. This kind of trouble occurs when the rolling roll (3a)
This occurs because the motion is a linear motion, and there were problems such as not being able to form stable irregularly shaped strips. This invention was made to solve the above problems, and it has improved productivity. The object of the present invention is to provide a method for forming irregularly shaped strips with high and stable stability.

[Means for solving problems]

The method for forming irregularly shaped strips according to the present invention involves arranging a strip or strip-shaped material in a receiving mold having concavities and convexities, and forming a planet on the opposite side of the material having a rotation axis that substantially coincides with the longitudinal direction of the material. Rolls are arranged, and the planetary rolling rolls are rotated in a direction intersecting the longitudinal direction of the material while feeding the material in the longitudinal direction, thereby deforming the material in its width direction.

[For production]

In the method for forming irregularly shaped strips of the present invention, the material is rolled by rolling or repeatedly rolling planetary rolls in a direction perpendicular to the longitudinal direction of the material, and the space between the receiving die and the planetary rolling rolls is narrow. The thickness of the material is reduced by pressing and stretching the material in the width direction. By alternating rolling with the planetary rolling rolls and feeding the material in the longitudinal direction, a long irregularly shaped strip is formed. Since the planetary rolling rolls that roll the irregularly shaped strips perform rotational motion or repetitive rotational motion, the driving power may be small.

It is possible to increase the number of rolling operations per unit time, and a sufficient processing speed can be achieved. In addition, since the motion direction of the planetary rolling roll is a curve, there is no need to roll the material first at the end in the width direction of the material, but by rolling from the part inside the end in the width direction. , the material is not pushed out in the direction of travel of the rolling rolls.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 to 3 are perspective views showing examples of irregularly shaped strips formed in the present invention. have

FIG. 4 is a front view showing a part of the deformed strip forming apparatus in one embodiment of the present invention in cross section, FIG. 5 is a BB sectional view thereof, FIG. 6 is a partial plan view, and FIG. The figure is a sectional view taken along the line DD, and FIG. 8 is a perspective view of the cradle.
(2) is the material placed on the uneven surface of the receiving mold (1), and (3) is the receiving mold (1) of the material (2).
) A planetary rolling roll that is arranged so that the longitudinal direction of the material (2) and the rotation axis coincide with the surface opposite to the surface in contact with the material (2), and that can roll in the width direction of the material (2), and (5) is a yuri rolling roll. (3) To reduce the deflection of the planetary rolling roll (3)
Two bank up rolls arranged so as to be in contact with,
(6) is a rotating body having a shaft for transferring the planetary rolling roll (3), and (7) is a frame supporting the rotating body (6).

The width of the convex surface (8) of the receiving mold (1) gradually becomes wider from the inlet side to the outlet side of the material (2), and becomes a constant width part (9) in the middle. The portion (9) matches the width of the thin portion (m) of the irregularly shaped strip (K) in FIG.

The convex surface (8) has a curved line that substantially coincides with the orbital direction of the planetary rolling roll (3), and the receiving die (1) is arranged so that the orbital surface and the curved surface are substantially parallel to each other. Ru.

Planetary rolling roll (3) and receiving mold (1) on E2E plane
The interval between the convex surfaces (8) is adjusted to be the same as the thickness of the thin part (m) of the deformed strip (K), and the distance between the convex surfaces (8) of the receiving mold (1
The distance between the convex surface (8) of ) and the planetary rolling roll (3) is adjusted to be equal to or greater than the thickness of the thick portion (Q) of the irregularly shaped strip.

The method of forming irregularly shaped strips using the above-mentioned device is to use a receiving mold (
1) After the flat material (2) introduced above stops once, the rotating body (6) rotates.
The planetary roll (3) attached to the workpiece rotates and comes into contact with the material (2), and the planetary roll (3) begins to shift due to the frictional force with the material (2). This planetary rolling roll (3
), the part of the material (2) that is thicker than the distance between the receiving die (1) and the planetary rolling roll (3) is pressed and stretched in the width direction and becomes thinner, resulting in an increase in width.

The portion (2a) is the portion that undergoes the greatest processing during one rolling of the planetary rolling roll (3). Planetary rolling roll (3)
Since the orbit of is a circle whose radius is the distance from the axis of the rotating body (6), the planetary rolling roll (3) is placed on the flat material (2).
The first contact point (11) is the flat part inside the end of the material (2), and the material (2) is rolled onto the planetary rolling roll (3).
) between the C-C plane and the E-E plane, where there is no possibility of pushing out in the advancing direction of the receiving mold (1).
The part (2a) corresponding to the vicinity of a) and (10b) is
The same main rolling process as described above is performed by one rolling of the planetary rolling rolls (3).

Next, after the planetary rolls (3) have completed the main rolling of the material (2), that is, at a position where the pressure on the material (2) by the planetary rolls (3) has weakened or disappeared, the material (2) is A feed of a fixed length is performed. and,]
The same rolling process as described above is performed using the planetary rolling roll (3) which has been rotated 11 times.

By alternately repeating the rotation of the six-star rolling roll (3) and the feeding of the material (2), the material (2) is transferred to the receiving mold (1).
As the strip progresses upward, it is gradually rolled and the width does not widen, so that the main forming process of the deformed strip is completed in the E-E plane.

Here, the planetary rolling roll (
Although the rolling process in step 3) was performed once, the rolling process may be performed twice or three times or more per feed.

The final forming of the profile strip (K) is performed between the E-E plane and the F-F plane. Thick part (Q
) and the thin part (m) remain in the same rolling shape as before passing through the E-F plane, so the groove width of the thin part (m) is 1.
It fluctuates depending on the length of each feed. By performing rolling on the constant width portion (9) of the convex surface (8) of the receiving mold (1), that is, between the E-F surface and the F-F surface, the width fluctuation can be reduced. Then, the final forming of the irregularly shaped strip (K) is completed, and the irregularly shaped strip (K) shown in FIG. 1 is formed.

In addition, when the amount of feed of the material (2) at one time is set small, the above-mentioned width fluctuation of the deformed strip that has passed through the E-F plane becomes small, so that the E-F plane of the receiving mold (1) and the F - The part between planes F is not necessarily required.

Although this embodiment is an example in which the device is provided at one location in the longitudinal direction of the material (2), it may be provided at two or more locations, and in this case, the thin section (m ) number of grooves is 2
It is also possible to have more than one location.

The above is an example in which the planetary rolling roll rolls in one direction, and next we will discuss the case in which the planetary rolling roll reverses and reciprocates. 4 to 8, the planetary rolling roll (3
) is rolled and rolled, the material is fed, and then the planetary rolling roll (3) is reversed and rolled over the material (2) from the opposite direction, even if the material is rolled, the planetary rolling roll (3) Deformed strips (K) can be formed in the same way as when rotating in one direction.

In addition, a backup roll (5) is attached for the purpose of reducing the deflection of the planetary rolling roll (3) shown here.
) may be omitted if the planetary rolling roll (3) has sufficient strength.

FIG. 9 is a partial plan view showing another embodiment, and FIG. 10 is a sectional view taken along line GG of the same. (10a) is parallel to the traveling direction of the material (2), and the other stepped portion (10b) is at an angle to the traveling direction of the material (2). The planetary rolling roll (3) rolls the material (2) in the direction of the arrow to form the deformed strip (K) shown in FIG. 1. The part of the material (2) that undergoes the main rolling process is the part (2a) corresponding to the vicinity of both step portions (10a) and (10b) that are angled in the longitudinal direction of the material.

FIG. 11 is a partial plan view showing another embodiment, in which one stepped portion (tog) of the convex surface (8) of the receiving mold (1) is parallel to the direction of movement of the material (2). The other step part (10b) has an angle in the direction of movement of the material (2), and the angled step part (10b) is a straight line up to the exit side of the material (2). In this case, the irregularly shaped strip (K
) is obtained.

In the embodiments shown in FIGS. 12 and 13, two deformed strip forming devices of the same type as shown in FIG. By setting the rotating directions of the two to be opposite directions, a deformed strip (K) having a cross-sectional shape shown in FIG. 3 and thin at both ends is formed.

In the embodiments shown in FIGS. 14 and 15, the stepped portion (10 g) of the convex surface (8) of the receiving mold (1) is parallel to the longitudinal direction of the material, and the height of the convex surface (8) is The height is gradually increased from the inlet side to the outlet side of the material (2). The distance between the planetary rolling roll (3) and the convex surface (8) of the receiving die (1) gradually becomes narrower from the inlet side to the outlet side of the material (2). In such an apparatus configuration, the entire surface of the material (2) located on the convex surface (8) of the receiving mold (1) is subjected to the main rolling process by one rotation of the planetary rolling roll (3). As the material (2) advances over the convex surface (8) of the receiving mold (1), the thin portions (,) of the deformed strips (K) are gradually rolled and become thinner, and the width thereof increases. By providing two such devices in the longitudinal direction of the material (2) and by making the rotating directions of the planetary rolling rolls (3) of both devices opposite to each other, thin irregular strips at both ends as shown in FIG. (K) is obtained.

Incidentally, when such a deformed strip forming device is provided at one location in the longitudinal direction, the deformed strip shown in FIG. 2 is obtained.

In the embodiment shown in Fig. 16, the material (
2) a guide roll (12) whose width direction position is constant;
and a roll (1) that regulates the vibration in the plane direction of the material (2).
3), which is an effective method for stably operating the deformed strip forming apparatus. The guide roll (12) in the width direction shown in this embodiment is not necessarily a roll, but may be a fixed guide that does not rotate.

The materials applicable to the present invention include copper and copper alloys, iron and carbon steel, special steel, titanium and titanium alloys, aluminum and aluminum alloys, nickel and nickel alloys, or clad materials that are composites of these metal materials. etc. can be mentioned.

〔Effect of the invention〕

As explained above, this invention rolls the material in the width direction by the rotational movement of the planetary rolling rolls, so the driving power of the rolling rolls can be reduced, the number of rolling times per unit time can be increased, and irregularly shaped strips can be rolled. This has the effect of sufficiently increasing the molding speed and improving productivity.

In addition, since the motion direction of the planetary rolling roll is a curved motion,
By setting the starting point of rolling in the width direction of the strip-like material not at the end of the material, but at a flat position inside the end in the width direction, the material is not pushed out by the rolling rolls and is stable. This has the effect of making it possible to form irregularly shaped strips.

[Brief explanation of drawings]

1 to 3 are perspective views showing examples of irregularly shaped strips formed according to the present invention, FIG. 4 is a front view showing a cross section of a part of the irregularly shaped strip forming apparatus in one embodiment, and FIG. B-B
6 is a partial plan view, FIG. 7 is a sectional view taken along line DD, FIG. 8 is a perspective view of the cradle, and FIGS. 9, 11, 12, and 14 are A plan view of a part of another embodiment, FIG. 10 is a sectional view taken along line GG in FIG. 9, FIG. 13 is a front view of FIG. 12, FIG. 15 is a front view of FIG. 14, and FIG. 17 is a perspective view of a part of another embodiment, FIG. 17 is a perspective view showing a conventional method, and FIG. 18 is a sectional view taken along line A-A. In each figure, the same reference numerals indicate the same or contrasting parts. (K) is a deformed strip, (Q) is a thick part, (m) is a thin part, (1)
is the receiving mold, (2) is the material, (3) is the planetary rolling roll, (
5) is a backup roll, (6) is a rotating body, and (8) is a convex surface.

Claims (9)

[Claims] (1) A strip or strip-shaped material is placed in a receiving mold having irregularities, and a planetary rolling roll having a rotating shaft that substantially coincides with the longitudinal direction of the material is placed on the opposite side of the receiving mold of the material, and the material is A method for forming a irregularly shaped strip, characterized in that the planetary rolling roll is rotated in a direction intersecting the longitudinal direction of the material while giving longitudinal feed to the material, thereby deforming the material in its width direction. (2) The planetary rolling roll forms the material while intermittently feeding the material in the longitudinal direction at a position of the rolling roll where the material is not substantially rolled. A method for forming irregularly shaped strips. (3) The part of the receiving die to be deformed is formed with a curved surface substantially the same as the orbital curve of the planetary rolling roll, and is arranged so as to be substantially parallel to the orbital curve of the planetary rolling roll. A method for forming irregularly shaped strips as described in Scope 1 or 2. (4) The irregular shape according to any one of claims 1 to 3, characterized in that the material corresponding to the concave portion of the receiving mold groove is not processed, but only the material corresponding to the convex portion of the receiving mold is processed. How to form the strips. (5) Claim 1, characterized in that the width dimension of the convex portion provided on the receiving mold and substantially involved in deformation processing gradually increases from the inlet side to the outlet side of the material. 4. A method for forming irregularly shaped strips according to any one of Items 1 to 4. (6) It should be noted that the width of the convex portion provided on the receiving mold that is substantially involved in the deformation process gradually widens from the inlet side of the material toward the outlet side, and becomes constant in the middle. A method for forming a deformed strip according to any one of claims 1 to 5. (7) The part of the receiving mold that is substantially involved in deformation processing is inclined from the inlet side of the material to the exit side, and the planetary roll and the receiving mold are Claim 1 characterized in that the interval is narrowed.
6. A method for forming a deformed strip according to any one of paragraphs 6 to 6. (8) Claim 1 characterized in that two or more positions for rolling in the width direction are provided in the longitudinal direction of one material.
A method for forming a irregularly shaped strip according to any one of Items 7 to 7. (9) A guide device that contacts the end in the width direction of the material and a roll that contacts in the surface direction of the material are disposed on the inlet side and the outlet side of the material, respectively.
8. A method for forming a deformed strip according to any one of paragraphs 8 to 8.