JP2994002B2 - Metal strip slitter plate presser - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a metal strip slitter for slitting a narrow metal strip while feeding a metal strip, and a plate holder for preventing the metal strip from being deformed at the time of slitting. It concerns the device.

"Prior Art" A conventional plate presser will be described with reference to FIGS. 4 and 5. FIG.

The metal strip a wound in a coil shape is unwound in a horizontal direction by a pinch roll (not shown). On both sides of the running direction, there are rotating shafts 1, which rotate symmetrically along the running direction.
A large number of disc-shaped cutters 3, 4 are fixed to the rotating shafts 1, 2 at predetermined intervals, and the outer peripheral edges of the cutters 3, 4 of both rotating shafts 1, 2 are close to each other. The metal strip a is inserted into the gap, the wide metal strip a is slit into a narrow metal shape, and each metal strip is wound on a spool fixed to a winding shaft (not shown).

In the slit portion c where the edges of the cutters 3 and 4 of both the rotating shafts 1 and 2 are in contact with or close to each other, the adjacent cutters 3 and 3 on each of the rotating shafts 1 and 2 are used to prevent the metal strip from being deformed at the time of slitting. And pressing plates 5 and 6 are provided between the pressing plates 5 and 6 so as to be opposed to each other via the passing metal band plate a and in close contact with the metal band plate a. In addition to being fixed to 60 and 61, the upper holding plates 5 are prevented from floating by the support bars 50 and 51.

"Problems to be Solved by the Invention" In the above-described conventional plate holding device, when the leading end of the metal strip a passes through the slit c (hereinafter, this is referred to as "passing plate"), each of the upper holding members is held. The plate 5 is pulled out to the right in FIG. 4 by hand, the leading end of the metal strip a is slowly pulled out to the slit portion, and each upper holding plate 5 is cut from the right in FIG.
Only after inserting between the three and four in the state shown in the figure, full-fledged slitting could not be started, and it took a lot of time and effort to pass the sheet.

In recent years, in order to reduce costs, there is a tendency that a wide metal strip is slit into a large number of narrow metal strips in one process to produce a product as it is. And the time loss at the time of threading is particularly remarkable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plate holding device that solves such a problem and allows the passing plate to be quickly and smoothly performed.

[Means for Solving the Problems] To achieve the above-mentioned object, a metal strip slitter plate holding device according to the present invention is provided with a predetermined distance between a rotating shaft that rotates symmetrically along a moving direction of a metal strip. While fixing a large number of disk-shaped cutters, and rolling in the metal strip between the edge of the cutter of one rotary shaft and the edge of the cutter of the other rotary shaft, the metal strip is In the slit portion of the slitter that slits the metal strip, between the adjacent cutters on each rotation axis, the pressing plate is opposed to each other in a parallel state via a metal strip passing therethrough and in close contact with the metal strip. And a driving device for driving the pressing plate on one side so as to separate and approach in a state parallel to the pressing plate on the other side.

Instead of providing a driving device for driving the pressing plate on one side, a driving device for driving the pressing plates on both sides so as to separate from and approach the pressing plate on the other side may be provided.

[Operation] Before the metal strip passes through the slit portion, the driving device slightly separates the press plate between the cutters on one rotary shaft and the press plate between the cutters on the other rotary shaft. By returning the presser plate to the original position by the drive mechanism in a state where the leading end of the metal strip is retracted between the presser plates on both sides, the passing of the metal strip is instantaneous and smooth.

When a driving device for driving the pressing plates on both sides is provided, the driving devices on both sides are operated.

"Embodiment" A preferred embodiment of a plate holding device according to the present invention will be described below with reference to Figs.

4 and 5, the same reference numerals are used in the following embodiments.

The metal strip a is wound in a coil shape, is changed in direction so as to run downward while being fed by a pinch roll or the like (not shown), and is continuously supplied to the metal strip slitter b.

In the slitter b, a rotating shaft 1 rotatably supported by the movable frame 10 and a rotating shaft 2 rotatably supported by the fixed frame 20 are set so as to sandwich a portion below the metal strip a. The two rotating shafts 1 and 2 are configured to rotate symmetrically in a direction in which the metal strip a is fed by a driving device (not shown).

A large number of disk-shaped cutters 3, 4 are fixed to the respective rotating shafts 1, 2 at predetermined intervals via spacers 11, 21 so as to form a pair, respectively. 4, the metal strip a is rolled in between the adjacent peripheral edges, and the metal strip a is slit into a number of narrow metal strips.

In the slit portion c where the edges of the cutters 3 and 4 are close to each other, the metal strip a (including the metal strip immediately after the slit) that passes through the slit portion c is provided between the adjacent cutters 3, 3 and 4, 4. ) And a presser made of a hard material (for example, trade name “Bakelite” or another hard synthetic resin, aluminum and its alloys or other metals, etc.) so as to closely contact the metal strip a in a parallel state. Plates 5 and 6 are inserted respectively.

The pressing plates 5 and the pressing plates 6 are vertically supported at positions where the slit c is sandwiched from the front and rear in the traveling direction of the metal band plate a and do not interfere with the metal band plate a passing therethrough. Bars 50, 51 and 60, 61 are respectively connected between the upper support bars 50, 60 and the lower support bars 51, 61.
Between both ends, a spring 7 is interposed in a compressed state at both ends.

An upper movable frame 52 and a lower movable frame 62 that are connected to each other are provided horizontally and parallel to each other above and below both sides of the running portion of the metal strip a in the slitter b.

Each end of the upper movable frame 52 has a support bar 5
Drives 53,63 consisting of air cylinders connected to 0,60
However, the lower movable frame 62 is provided with similar driving devices 54 and 64 each having a distal end connected to the support bar 51 or 61, respectively.

Therefore, by driving the driving devices 53, 54, 63, and 64, the pressing plates 5, 6 on both sides operate in a parallel state so as to separate and approach simultaneously.

In this embodiment, when the tip of the metal strip a approaches the slitter b, the sensor d composed of a photoelectric tube detects this, and the driving devices 53, 54, 63, 64 are operated and the third As shown in the figure, the holding plates 5 and 6 are slightly separated from each other, and when the time set by the timer elapses (the sensor d
The time from when the leading end is detected to when the leading end moves between the presser plates 5 and 6 is calculated in advance from the traveling speed of the metal strip a and set in the timer. ), Drive again
53, 54, 63 and 64 are operated to return the presser plates 5 and 6 to the state shown in FIGS. 1 and 2.

Accordingly, no manual operation is required at the time of passing the leading end of the metal strip a through the slit c, and the passing is completed instantaneously and smoothly.

In this embodiment, the driving device 8 composed of a screw jack is supported on the side frame 81, and the movable frame 10 supporting the rotating shaft 1 is connected to the driving device 8,
When the cutter diameter is changed by replacing or polishing the cutters 3 and 4, the driving device 8 moves the rotary shaft 1 together with the movable frame 10 in the left and right direction in the figure according to the changed cutter diameter. The position is adapted to the passing surface of the metal strip a.

A driving device (a screw jack in this example) driven by a servo motor (not shown) is provided on the frame 81.
9, the driving device 9 is connected to the movable frames 52, 62, and when the passing surface of the metal strip a moves as described above, a new passing surface calculated by the diameter of the cutter 3, 4 is used. Is controlled by the driving device 9 based on the position of the linear measuring device and the display of the position measuring device 91 composed of the linear scale in FIG.
6 is moved by a required amount so that the holding plates 5 and 6 coincide with the passage surface of the metal strip a.

The metal strip slitter b can be embodied by installing the metal strip slitter b not in the lower running section of the metal strip a as described above but in a horizontal running section as in the related art.

In the above embodiment, the holding plates 5 and 6 are simultaneously operated in the direction of approaching and moving away from each other, but it is also possible to carry out one of the pressing plates 5 and 6 so as to approach and move away from the other.

In the above embodiment, the holding plates 5 and the holding plates 6 are connected by the support bars 50, 60, 51, and 61. However, if the holding plates 5 or the holding plates 6 are simultaneously operated, The configuration is not limited to the configuration of the embodiment.

Although an air cylinder was used for the driving devices 53, 54, 63, and 64, a screw jack, a rack and pinion, a solenoid, a return spring, and other known driving devices were used as long as they could open and close the press plates 5 and 6. Can be used.

Further, in the above-described embodiment, the entire holding plates 5 and 6 are configured so as to approach and separate from each other. However, the holding plates 5 and 6 are arranged so as to approach and separate only on the retraction side of the metal strip a (only in the upper part of FIG. 1). The present invention can be practiced even if the configuration is made as follows.

[Effects of the Invention] According to the present invention, the pressing plate can be automatically opened and closed when the leading end of the metal strip passes through the slit portion, and the passing operation can be smoothly performed without any trouble at the time of passing. Is performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing an example of a plate holding device according to the present invention, FIG. 2 is a partial cross-sectional view along an arrow AA in FIG.
FIG. 3 is a partial plan sectional view showing a state in which the holding plates are opened, and FIG.
FIG. 5 is a partial cross-sectional view of the conventional plate holding device, and FIG. 5 is a partial cross-sectional view along the arrow BB of FIG. Explanation of main reference numerals in the figure 1, 2 is a rotating shaft, 10 is a movable frame, 20 is a fixed frame,
3, 4 is a rotating shaft, 5, 6 is a holding plate, 50, 51, 60, 61 are support bars, 5
Reference numerals 2 and 62 denote movable frames, 53, 54, 63 and 64 drive units, a a metal strip, b a metal strip slitter, and c a slit.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hironori Tsuchiya 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Aluminum Industry Co., Ltd. 55-55325 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B23D 33/02 B23D 19/06

Claims (2)

(57) [Claims] 1. A large number of disk-shaped cutters are fixed at predetermined intervals to a rotating shaft that rotates symmetrically along the feeding direction of a metal strip, and the edge of one rotating shaft and the other rotating shaft are fixed. In the slit portion of the slitter, which slits the metal strip into a number of narrow metal strips while rolling the metal strip between the edges of the cutter, the metal passing between adjacent cutters on each rotation axis. A pressing plate is provided in a state where the pressing plate is opposed to and in close contact with the metal band plate in a parallel state via the band plate, and the pressing plate on one side is separated from and approaches the pressing plate on the other side in a parallel state. A plate holding device for a metal strip slitter, characterized in that a driving device for driving the metal strip is provided. 2. A large number of disk-shaped cutters are fixed at predetermined intervals to a rotating shaft that rotates symmetrically along the feeding direction of a metal strip, and the edge of one rotating shaft and the other rotating shaft are fixed. In the slit portion of the slitter that slits the metal strip into a number of narrow metal strips while rolling the metal strip between the edges of the cutter and the metal strip passing between adjacent cutters on each rotation axis. A holding plate is provided in a state of being opposed to and in close contact with the metal plate in a parallel state via a band plate, and the pressing plates on both sides are driven to separate and approach each other in a parallel state with respect to the holding plate on the other side. A plate holding device for a metal strip slitter, wherein a driving device for causing the metal strip slitter is provided.