JPS58160014A - Scrap treating method and device therefor - Google Patents

Abstract

PURPOSE:To make it easy to treat scraps at an after-step by a method wherein both of the longitudinal edges of a strip are subjected to trimming after they are notched. CONSTITUTION:The strip P is thrusted against the circumferential surface of a notch plate by a notcher 13 and notches N extending in the direction of the width of the strip P are formed at required intervals with respect the progressing direction of the strip P. The longitudinal edges of the notched strip are then subjected to side trimming at portions lying somewhat inside toward the center of the rolled strip P. The strip P subjected to the side trimming is transfered to the after step but the scraps S generating as a result of the side trimming are transferred to a guide 26 in the form of a band and are broken to fine pieces at the notches N by hitting against a back plate 28.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a scrap processing method and an apparatus thereof, in which both width ends of a strip are notched and then trimmed to facilitate scrap processing in a subsequent process.

Generally, if a strip remains in that state after being rolled, quality defects due to cracks or dimensional variations will remain on both end faces (both ears) of the strip, or camber will occur in the longitudinal direction of the strip. I do things. Therefore,
In order to obtain a predetermined product size or quality, a step of shearing both edges of the rolled material σ is required. However, since the strip is continuously flowing, scraps of the sheared ears are also generated continuously or intermittently, making post-processing difficult.
It is necessary to further shred (cut into small pieces).

Conventionally, as shown in Fig. 1, a scrap chopper (b) is installed downstream of a rotary side trimmer (α) and a scrap chopper (b) is installed at a distance downstream from the rotary side trimmer (α), as shown in Figure 1. After shearing both ears of the IJ knob (dJ), scrap it with a chopper (b+).
A method was adopted in which 61 was cut into small pieces. but,
In this method, since the distance between shearing both ears and cutting the scrap (g) is long (a certain distance must necessarily be left due to the mechanical structure), the scrap that is twisted when shearing is f,) successfully chopper-(b)
The kite member (c) is unable to be guided and gets stuck inside the kite member (c).

Even if the scrap reaches chopper (b) without getting caught, if the scrap J is twisted 90 degrees and enters vertically, it will not get caught in the chopper (b)'s blade and will not be able to be cut. Therefore, when the above-mentioned phenomenon occurred, the entire line stopped, causing production to be inhibited.

Therefore, as a conventional measure against the above, a chopper (6) was installed coaxially with the side trimmer (α) as shown in Figure 2.
That is, a chopper foam plate (bl) is installed inside the shaft (fl) of the upper trimmer blade (Ql), and a chopper lower blade (bl) is installed inside the shaft (f2) of the lower trimmer blade (a2). tesu) IJ knob (shearing of dJ ear)
)'(e) A method was also developed to eliminate the sagging of scrap (1) by simultaneously performing the shredding.9 However, in such a method, the side trimmer (α) and chopper (b) Since the upper and lower cutters of the side trimmer (G) are installed on the same axis, the upper and lower cutters (at) of the side trimmer (G) (
If the interval X and/or the top gap 1 in a2) are made appropriate, the gap x and/or the top gap 1JRv' in the upper and lower cutters (61) (h) as the chopper (b) will become inappropriate (see Figure 3). , it is not possible to make both of them appropriate at the same time, which may damage the cutter 1+t) (bl) or cause scrap (1
1) may become impossible to cut. In addition, since edge shearing and scrap shredding are performed at the same time, cutter flaws (g) of the chopper lower cutter (bl) remain on the width end face of the sheared strip (d), which may affect product quality or cause There were problems such as interfering with process processing.

The purpose of the present invention is to cut scrap without causing any trouble;
This was developed for the purpose of providing a scrap processing method and device that improves production efficiency and product quality at the same time.A notch extending in the width direction of the strip is provided at the end of the strip width as required in the longitudinal direction of the strip. This method is characterized in that the strip is inserted between the notches and then the strip is trimmed in the longitudinal direction of the strip a little closer to the center than the notch.

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

Strip 7' (frame provided on both sides of Pi width direction)
1), a hollow eccentric shaft (2) is rotatably pivotally mounted on the eccentric shaft (2), and a main shaft (5) is fitted into bearings (3) and (4) pivotally mounted on the hollow part of the eccentric shaft (2). A round seven-wheel baffle plate (6) is fixed to one end of the main shaft (υ), and a driving device (not shown) is connected to the other end of the main shaft (5). (2) The bolt that moves the (2) in the axial direction (
7) and a wedge (
A gap adjustment device (9) consisting of the above-mentioned frame (1) is fitted with a bearing 00α parallel shaft (2) provided at the lower part of the eccentric shaft (2) of the frame (1), and a gap adjustment device (9) consisting of Attach a notch lower cutter 03 that cooperates with the notch foam plate (6) to insert seven holes into the strip (P). The notch Q3 has an acute-angled side layer, and the notch Q3 has an acute angle in the circumferential direction [
There are several of these.

A hollow eccentric shaft Q41 is rotatably pivoted at a predetermined position of the frame (1) on the downstream side of the notcher foam plate (6) and the notch a3 in the rolling material traveling direction, and the hollow part of the eccentric shaft Q4) Fit the main shaft Q7) to the bearing α which is pivotally connected to the
A round trimmer upper cutter (T) is fixed to one end of the main shaft αη, and a drive device (not shown) is connected to the other end of the main shaft αη, and the eccentric shaft Q4 is moved in the axial direction to an appropriate position of the frame (υ). The gap adjusting device r2υ is made of a wedge wire that fixes the position of the eccentric shaft α su that fixes the position of the eccentric shaft α su of the frame (υ), and (c), and the trimmer upper cutter (to) seven cooperates with one end of the shaft (c) to remove the strip (P).
1. Attach the round trimmer lower cutter (c) for trimming both width ends of the strip in the longitudinal direction.

A guide rod through which the scrap (S) is guided is provided on the downstream side of the trimmer's upper and lower cutters (to) (c), and in front of the guide (to), the angle of collision with the scrap (S) is set by a hydraulic cylinder rod. A backing plate (to) that can be adjusted is pivotally mounted.

Note that - in the figure is a width adjustment device, and (1) is a hopper that receives shredded scraps (S) tt.

During work, use the width adjustment device to adjust the dimensions between the left and right notches and the dimensions between the left and right trimmers to the required dimensions according to the board width, and use the gap adjustment device (9) c2υ to move the eccentric shaft (2) α→ in the axial direction. By moving the gap between the notch ice plate (6) and the notch ice plate (6) and the gap between the top and bottom trimmer cutters (to) (c), the eccentric shaft (2) α→
Rotate the ``notsu 1000'' board (6) and 7 tsuchiya (13)
Adjust the top clearance of the trimmer and the top clearance of the trimmer's upper and lower cutters (G) 4.

The strip (Pl) is pressed against the circumferential surface G of the notcher ice plate (6) by the notch (13), and as shown in FIG.
Notches extending in the llii direction are inserted at the required intervals in the strip (P) traveling direction, and the width end of the strip (P) with the notches (N) inserted is cut into the notches N by the trimmer's upper and lower cutters (end). The center side of the rolled material (P) is side-trimmed a little more than the part .

Side-trimmed strips (no are scraps produced by side trimming that are sent to the subsequent process)
is sent to the guide (7) in a band-like state, and when it collides with the cover plate G in front of the guide (7), it is broken at the notch N and shredded.

In addition, in the embodiment of the present invention, a notch is provided at the bottom,
Although we have explained the case where the non-char composite plate is installed on the top, it is also possible to perform the operation even if it is installed upside down, and the device for shredding strip-shaped scrap may be a hammer type device. Of course, various changes may be made without departing from the gist of the invention.

According to the scrap processing method and apparatus G of the present invention, (1) Since side trimming is performed on the inner side of the strip, there are no knife scratches on the sides of the strip, and product quality is improved.

The behavior of the old horn-shaped scrap is obedient and flows in one direction, making it easier to guide.

Furthermore, even if a strip of scrap gets caught in the guide, it will be broken and shredded at the notch, so the guide will not be blocked and work efficiency will be improved.

Various excellent effects can be achieved.

[Brief explanation of drawings]

FIGS. 1 and 2 are explanatory diagrams of conventional examples, respectively (A)
is a front view, +B) is a side view, (q is a plan view, Fig. 3 is an explanatory diagram of the top gap and gap, Fig. 4 is an explanatory diagram of the present invention, Fig. 5 is the V-V direction of Fig. 4) The arrow view, Figure 6 is the ■- in Figure 4.
(2) Directional view, and FIG. 7 is a plan view showing the state of the notch and trimming of the strip. In the figure, (1) shows the frame, (2) α→ shows the eccentric shaft, (6) shows the notch ffi plate, Q3 shows the notch 1 (to) the cutter on the trimmer, and (c) shows the lower cutter of the trimmer. Patent applicant Ishikawajima-Harima Heavy Industries Co., Ltd. Patent applicant Nippon Kokan Co., Ltd. 69 Figure 6 Figure 7

Claims (1)

[Claims] (1) Notches extending in the width direction of the strip are inserted at the ends of the width of the strip at required intervals in the longitudinal direction of the IJ tube;
A scrap processing method characterized in that the strip is then trimmed in the longitudinal direction of the strip a little closer to the center than the notch. 2) At the width end of the IJ tube, a notch for inserting a notch in the width direction of the IJ tube, and a trimmer disposed downstream of the notch for trimming the width end of the strip in the longitudinal direction are provided. A scrap processing device characterized by: