JPS6347385Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a feed roll device used in a leveler feeder or a roll feeder for supplying coil material to a press.

Generally, in a line where coil material is unwound by an uncoiler and then fed to a press, between the uncoiler and the press there is a leveler for removing curls in the coil material, and the coil material that has been straightened through the leveler is intermittently placed between the uncoiler and the press. A roll feeder for feeding the material to the press, or a leveler feeder that serves as both a leveler and a roll feeder is required.

FIG. 1 shows the structure of a conventional leveler feeder that functions as both a leveler and a roll feeder.
The coil material is fed until it reaches the upper outlet pinch roll 1 and the lower outlet pinch roll 2.
Upper entrance pinch roll 3 and lower entrance pinch roll 4
It is sent to the right by the driving force of , and its curls are straightened through upper straightening rolls 5 to 8 and lower straightening rolls 9 to 11 on the way, and after reaching the outlet upper pinch roll 1 and the outlet lower pinch roll 2. is intermittently delivered to the press by these driving forces. The lower outlet pinch roll 2, the lower entrance pinch roll 4, and the lower straightening rolls 9 to 11 are attached to the fixed frame 12, and the upper outlet pinch roll 1, the upper entrance pinch roll 3, and the upper straightening rolls 5 to 8 are movable. It is attached to the frame 13. Movable frame 13
is capable of vertical movement by the action of the eccentric shafts A, B, and C and the link 14. A cross-sectional view of the vicinity of eccentric axes A and C is shown in FIG. Eccentric shafts A and B are for pressurizing, and by rotating both at the same time, the distance between the movable frame 13 and the fixed frame 12 is adjusted, and the pressure applied by the upper and lower straightening rolls 5 to 11 to the coil material as a straightening force is adjusted. . The eccentric shaft C is for release. In this type of leveler feeder or roll feeder, when a press operation is performed, the coil material must be kept in a released state in order to finely adjust the position of the coil material. Therefore, at the time of release, the cylinder 15 rotates the eccentric shaft C to move the movable frame 13 upward about the eccentric shaft B, thereby separating the upper outlet pinch roll 1 from the lower outlet pinch roll 2, The coil material is released. Note that the upper entrance pinch roll 3 is pushed down by the cylinder 16 only when inserting the coil material, and is in the raised position at other times, so the coil material is free between the upper and lower entrance pinch rolls 3 and 4.

In Fig. 1, upper and lower outlet pinch rolls 1, 2, movable frame 13, cylinder 15, eccentric shaft C and support member 17, hanging bolt 18, release nut 1
9. The push bolt 20, nut 21, and pressure spring 22 are the parts that have the function of a feed roll device. A sectional view of the portion indicated as D in FIG. 1 is shown in FIG. 3a. Outlet upper pinch roll 1
The support member 17 is connected to a suspension bolt 18 and a release nut 19 screwed into the suspension bolt 18, and further connected to a push bolt 20 screwed into the movable frame 13 via a pressure spring 22. . During the aforementioned release, when the movable frame 13 moves upward due to the rotation of the eccentric shaft C, the push bolt 20 screwed into the movable frame 13 pushes up the release nut 19, and the hanging bolt 18
The upper outlet pinch roll 1 is moved upward through the coil member, and the coil material is brought into a released state.

However, this part is normally adjusted so that the release nut 19 and the push bolt 20 are in contact with each other when the upper and lower outlet pinch rolls 1 and 2 are in contact with each other. , 2, the suspension bolt 18 and release nut 19 are pushed up by a length t, and a gap of length t is created between the release nut 19 and the push bolt 20. It will happen. If the release operation is performed in this state, a timing delay corresponding to the gap of length t will occur between the time when the movable frame 13 starts to rise and the time when the upper exit pinch roll 1 starts to rise, and the upper exit pinch roll will also be delayed. As the rising distance of roll 1 becomes smaller and the release is not complete,
In actual use, it is necessary to make adjustments to eliminate the gap between the release nut 19 and the push bolt 20 depending on the thickness t of the coil material 23, which is troublesome.

The object of the present invention is to solve the above-mentioned problems and provide a feed roll device that can always perform complete release without the need for adjustment, regardless of the thickness of the inserted coil material.

In order to achieve this object, the present invention provides an inclined surface part on one of the connecting parts of the movable roll and the movable frame, and connects the inclined surface part and the other connecting part with a one-way biting member. death,
The present invention is characterized in that the movement of the movable frame is immediately transmitted to the movable roll at any relative position of the movable roll to the movable frame.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

FIG. 4 is a sectional view of an embodiment of the present invention. The same parts as in FIGS. 1 to 3 are designated by the same reference numerals. 24
A casing bolt is screwed into the movable frame 13, and has an inclined surface portion 24a as shown in the figure. Reference numeral 25 is a slider with holes 25a drilled in each of the four directions at 90° angles.
Each contains steel balls 26 and 27 (two not shown). The slider 25 is subjected to a downward force by a weak spring 28 connected to the hanging bolt 18. When the coil material is inserted between the upper and lower outlet pinch rolls 1 and 2 (not shown in FIG. 4), the suspension bolt 18 rises by the plate thickness, but the slider 25 and steel balls 26 and 27 Due to the force, the casing bolt 24, steel balls 26, 27, and suspension bolt 18 are pressed against each other without changing their positions relative to the casing bolt 24. Next, at the time of release, the movable frame 13 and the casing bolt 24
begins to rise, but at this time, the steel balls 26 and 27 are wedged between the casing bolt 24 and the suspension bolt 18, and as a result, as the casing bolt 24 rises, the suspension bolt 18 also rises, causing the timing to change. The release will take place without delay. When the release is completed and the casing bolt 24 descends,
The steel balls 26 and 27 are loosened, and the slider 25, spring 28, and suspension bolt 18 return to their original positions.

FIG. 5 is a diagram showing the slider 25 of FIG. 4 rotated by 180 degrees. The slider 25 and the casing bolt 24 are formed with a step as shown in the figure, and in the case of FIG. 5, the convex portions ride on each other, leaving the steel balls 26 and 27 free. At this time, the amount of pressure applied to the pressure spring 22 can be adjusted by loosening the nut 21 and moving the casing bolt 24 up or down relative to the movable frame 13.

In this embodiment, the lower outlet pinch roll 2 corresponds to a fixed roll of the present invention, the upper outlet pinch roll 1 corresponds to a movable roll, and the slider 25, steel balls 26, 27, and spring 28 correspond to a one-way biting member. .

In addition, in this embodiment, an inclined surface portion provided on either one of the connecting portions of the movable roll and the movable frame,
Although it is provided in the connecting portion of the movable frame, that is, the casing bolt 24, it is also possible to provide it in the hanging bolt 18, which is the connecting portion of the movable roll. Further, although the casing bolt 24 is screwed into the movable frame 13, it may be formed integrally with the movable frame 13. At this time, the amount of pressure applied by the pressure spring 22 may be adjusted by providing some adjustment means on the outlet upper pinch roll 1 side. Further, in this embodiment, a spring 28 is provided in order to keep the casing bolt 24, steel balls 26, 27, and hanging bolt 18 in pressure contact with each other at all times, but this state of pressure contact is originally maintained due to the weight of the slider 25. Since it is a spring 28
is not necessarily necessary.

As explained above, according to the present invention, an inclined surface portion is provided on one of the connecting portions of the movable roll and the movable frame, and the inclined surface portion and the other connecting portion are connected by a one-way biting member. death,
Therefore, the movement of the movable frame is immediately transmitted to the movable roll at any relative position of the movable roll to the movable frame, so regardless of the thickness of the coil material to be inserted, the movement of the movable frame is always transmitted without the need for adjustment. A full release can be done.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional leveler feeder, Figs. 2 and 3 a and b are sectional views of a portion of the leveler feeder in Fig. 1, and Fig. 4 shows an embodiment of the present invention. 5 is a cross-sectional view of the embodiment of FIG. 4 when a portion thereof is moved. DESCRIPTION OF SYMBOLS 1... Upper outlet pinch roll, 2... Lower outlet pinch roll, 12... Fixed frame, 13... Movable frame, 15... Cylinder, 17... Support member, 18... Hanging bolt, 22... Pressure Spring, 23...Coil material, 24...Casing bolt, 24a...Slope portion, 25...Slider, 2
6, 27...Steel ball, 28...Spring, A,
B, C... Eccentric shaft.

Claims (1)

[Scope of utility model registration request] A fixed roll and a movable roll that sandwiches the coil material between the fixed roll and feeds the coil material by rotation, and the movable roll are supported so that they move together, and only the movable roll moves in the direction away from the fixed roll. In a feed roll device equipped with a movable frame that allows for
A feed roll device characterized in that the feed roll device is connected by a one-way biting member.