JPH026981Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a chute for a scrap jotper that cuts into short lengths the edge waste generated during edge cutting of rolled steel plates (strips).

(Prior art) If a strip has defects such as cracks at both ends in the width direction, that is, at the ears, if the strip is passed through a rolling line or processing line as is, the cracks will expand due to the tension applied to the strip and the strip will become damaged. Since there is a risk of breakage, stripping of the ears, that is, side trimming, is performed using a side trimmer. Edge cutting is also carried out when trimming the strip width to a constant value. One way to dispose of the narrow band-shaped scrap generated during ear cutting is to use a scrap jotper that cuts long ear scraps into many short pieces. This will be explained below using figures.

FIG. 1 is a front view showing an example of the overall configuration of an edge cutting device including a side trimmer A and a scrap hopper B, and FIG. 4 is a side view showing an example of a conventional chute for a scrap hopper. In FIG. 1, 1 is a strip that flows from the back of the page to the front. The configuration of the side trimmer A is as shown in FIG. 1, where 2 is a cutter (round blade) having a blade on the circumference, 3 is a side trimmer housing, and the side trimmer housing 3 has 2 parts facing each other in the width direction of the strip 1.
1, each of which is slidably mounted on a base 5 in the direction of arrow 4 in FIG.

The configuration of the Scrap-punch Jotsupah B is shown in Figures 1 and 4.
In the figure, reference numeral 6 denotes a tool rest, and several cutters (straight blades) 7 having long straight blades in the width direction of the strip 1 are attached on the circumference of the tool rest 6 (four in the illustrated example). . Reference numeral 8 in the figure indicates scrap hopper housings, and two of them are installed on a sliding base 10 so as to be slidable in the direction of the arrow 9 in FIG. 1, facing each other in the width direction of the strip 1. The sliding base 10 is attached to the fixed base 1 slidably in the direction of the arrow 11.
It is installed on 2. In FIGS. 1 and 4, 13 is a lug and 14 is a blade cover.

The conventional chute that guides the ear scraps 13 from the side trimmer A to the scrapper hopper B has a front view shown on the right side of the dashed line indicating the center line in Fig. 1, and a side view shown in Fig. 4. Straight blade 7
The upper chute 21 attached to the side trimmer housing 3 and the scrapp hopper housing 8 are installed so that they do not get in the way of pulling out the scrapp hopper B in one direction of the arrow 11 in Fig. 1 during blade changing work. It consists of two parts: a lower chute 22 attached to the lower chute 22; When changing the width of the strip 1 to be trimmed, the side trimmer housing 3 is set to a new position by sliding it on the base 5 in the direction of arrow 4 in Fig. 1 according to the width. It moves together with the trimmer housing 3. The mounting position of the upper chute 21 is round blade 2
The width of the upper chute 21, indicated by k in FIG. 1, is made as narrow as possible to allow the ear scrap 13 to pass through.

This is because as the width k of the upper chute 21 increases, the minimum distance between the two opposing side trimmer housings 3 increases, making it impossible to cut the edge of the strip 1 with a narrow width.

By the way, as shown in Fig. 1, the length l of the straight blade 7 of the scrapper jotsper B is generally made longer than the width m of the lug scrap 13 to be cut, in order to make the blade changing cycle as long as possible. Then, during the edge cutting operation, the scrap hopper housing 8 is reciprocated in the direction of the arrow 11, and the entire length l of the straight blade 7 is used to cut the edge waste 13.

Since the conventional lower chute 22 is fixedly attached to the scrap hopper housing 8, the lower chute 22 reciprocates with the reciprocating movement 11 of the scrap hopper B. Therefore, the width n of the lower chute 22 shown in FIG. big.

(Problem to be Solved by the Invention) When the ear scraps coming out of the upper chute 21 enter the wide lower chute 22, due to the twisting and bending of the ear scraps 13, it will not necessarily occur as shown in Fig. 1. The straight blade 7 does not descend linearly from the outlet of the upper chute 21, and the straight blade 7 is not used uniformly over the length of the blade even though the scrapper hopper B is reciprocating. There was a problem that the straight blade 7 would wear unevenly and shorten the life of the blade.

The object of the present invention is to provide a chute for a scrapp hopper which prevents uneven wear of the straight blade 7 of the above-mentioned scrapp hopper.

(Means for Solving the Problems) The structure of the scrap chute for scrapper according to the present invention is such that the upper scrap chute is fixedly suspended from the side trimmer housing, and the lower scrap chute is in communication with the upper scrap chute. The ute is characterized by being supported movably in the reciprocating direction of the scrap hopper by a hydraulic cylinder mounted on the scrap hopper housing.

(Embodiment) An embodiment of the chute for a scrapper hopper according to the present invention will be described below with reference to the drawings. As shown in the front view on the left side of the dashed line indicating the center line in FIG. 1, and as shown in the side view in FIG. The connecting pin 33 to be connected, the cylinder rod 34 for connecting the cylinder rod 34' to the lower chute 32, the chute sliding cylinder 34, the chute sliding rod 35, the support plate 36 for supporting the chute sliding rod 35, the chute sliding cylinder 34 and the support plate. It consists of a chute stand 37 that supports 36 and 36. Further, the upper chute 31 is provided with a connecting member 38 through which the connecting pin is passed, and the lower chute 32 is provided with a connecting member 38' through which the connecting pin is passed and a hole through which the chute sliding rod 35 is passed. A chute sliding member 39 is attached. The chute base 37 is fixedly attached to the scrap hopper housing 8. Also, Fig. 2 a and b show the chute 3 for the scrapper hopper.
FIG. 3 is a front view showing the positional relationship between 1 and 32 and the straight blade 7. FIG. In FIG. 2, arrows 9' and 9'' indicate the movement of the scrap yhopper housing.

Now, in the present invention, when pulling out the scrapper jotsper B in one direction of the arrow 11 in FIG. If you keep it in shoot mode, it will get in the way of shoot and it will be scrapped
cannot be pulled out, so the upper chute 3 cannot be pulled out as before.
It is divided into two parts: 1 and a lower chute 32. That is, the upper chute 31 is fixedly attached to the side trimmer housing 3, and the lower chute 32 is attached to the chute sliding rod 3 as shown in FIGS.
The chute can be moved along a chute sliding rod 35 by operating a chute sliding cylinder 34 supported at 5 and mounted on the scrap hopper housing. Upper chute 3 indicated by p in Figure 1
1 is the same as the conventional upper chute 21,
It is made as narrow as possible to allow the ear scraps 13 to pass through. On the other hand, the width of the lower chute 32 is approximately equal to the width p of the upper chute 31, and is much narrower than the width l of the straight blade 7. Therefore, the shavings 13 coming out of the upper chute 31 are not bent as in the conventional case, but are immediately guided to the desired position of the straight blade 7, as shown in FIG. 1, and the disadvantages of the conventional method are solved. It is something. Furthermore, as mentioned above, when changing the straight blade 7, it is necessary to pull out the lower chute 32 together with the scrapper hopper B in the direction of the arrow 11 in FIG. If it is fixedly installed in the scrap hopper housing 8, the positions of the upper chute 31 and the lower chute 32 will shift due to the reciprocating movement of the scrap hopper B in the direction of the arrow 11 during the edge cutting operation. Both the upper and lower chute will no longer communicate.

In order to solve this problem, in the present invention, the rod 34' of the chute sliding cylinder 34 mounted on the scrapp hopper housing 8 is connected to the lower chute 32, and the
Move the lower chute 32 in and out by moving the cylinder rod in and out in the opposite direction to the movement of the chute sliding rod 35.
The lower chute 32 is kept at a constant position even if the scrap hopper B makes a reciprocating movement. Figure 2a shows the state in which the scrapp jotsper B moves in the direction of arrow 9'.
The lower chute 32 is located on the right side of the straight blade 7. FIG. 2b shows a state in which the scrap hopper B is closest to the direction of the arrow 9'', and the lower chute 32 is close to the left end of the straight blade 7.

In this embodiment, in order to ensure communication between the upper chute 31 and the lower chute 32 during edge cutting work, a connecting pin 33 is used to connect both the upper and lower chute 3.
1 and 32 are connected to form a single body. At this time, it goes without saying that the force applied by the chute sliding cylinder 34 to the lower chute 32 must be greater than the sliding friction force of the lower chute 32 along the chute sliding rod 35; The force is set to be much smaller than the force that would deform both the upper and lower chute 31, 32 and the connecting pin 33, and in the unlikely event that the rod 34' of the chute sliding cylinder 34 moves in and out. It is important to prevent damage to both the upper and lower chute 31, 32 and the connecting pin 33 even if the reciprocating motion of the scrap hopper B does not coincide with the reciprocating movement to some extent.

Regarding the method of ensuring the communication between the upper chute 31 and the lower chute 32 described above, for example, the speed of the reciprocating motion of the scrap hopper B can be improved without using the connecting pin 33 as in this embodiment. It is also possible to do this by using an automatic control system that detects this and controls the speed of insertion and removal of the rod 34' of the chute sliding cylinder 34 so that it always matches the reciprocating speed of the scrap hopper B. In addition, by detecting the position of the upper chute 31 and the position of the lower chute 32 and controlling the fluid pressure applied to the chute sliding cylinder 34 so as to prevent the positions of both chute from shifting, Although communication between the upper and lower chute 31 and 32 can be ensured, in this embodiment, the connecting pin 3 is used because it is simpler and cheaper.
3 is used.

(Effect of idea) According to the present invention, the following effects can be obtained.

When replacing the straight blade 7 of the Scrap Pitch Par B, the lower chute 32, which is divided into two halves, should be inserted into the Scrap Pip Pocket during the edge cutting operation so as not to obstruct the drawer of the Scrap Pip Patch B. Par B
Scrap jottle housing 8 is movable in reciprocating direction 11 by hydraulic cylinder 34.
By attaching the lower chute 32 to the lower chute 32, it is possible to narrow the width of the lower chute 32. This makes it possible to guide the ear scraps 13 to the desired part of the straight blade 7 of the Scrapp Jottsper B, and the ease of pulling out the Scrapp Jottsper B when changing the blade remains the same as before. At the same time, it is possible to prevent uneven wear of the straight blade 7 and extend the life of the blade.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of the overall configuration of the edge cutting device, and Figures 2a and 2b show the positional relationship between the chute for a scrapper hopper according to the present invention and the cutter (straight blade) of the scrapper hopper. 3 is a side view showing an embodiment of a chute for a scrapp hopper according to the present invention, and FIG. 4 is a side view showing an example of a conventional chute for a scrapp hopper. A...Side trimmer, B...Scrap-up hopper, 1...Strip, 2...Side trimmer cutter (round blade) 3...Side trimmer housing, 4...Sliding direction of side trimmer housing, 5 ...Base, 6...Turret post, 7...Scrap-up hopper cutter (straight blade), 8...Scrap-up hopper housing, 9...Sliding direction of the scrapp-up hopper housing, 10... ...Sliding base, 11...Sliding direction of sliding base, 12...
Fixed base, 13... Ear scrap, 14... Blade cover, 21... Conventional upper chute, 22... Conventional lower chute, 31... Upper chute, 32...
...Lower chute, 33...Connecting pin, 34...Chute sliding cylinder, 34'...Cylinder rod, 35...Chute sliding rod, 36...
Support plate, 37... Chute base, 38... Upper chute connecting member, 38'... Lower chute connecting member, 39... Shute sliding member, k... Width of conventional upper chute, l... Straight Blade length, m...
Width of ear scrap, n... Width of conventional lower chute, p...
...Width of upper chute.

Claims (1)

[Scope of utility model registration request] An upper scrap chute is fixedly suspended from the side trimmer housing, and a lower scrap chute that communicates with the upper scrap chute is reciprocated by a hydraulic cylinder mounted on the scrap pjhopper housing. A chute for a scrappy jotsupah that is movably supported in the direction of motion.