JPH072082Y2 - Rolled material rolling device - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a rolled material rolling device for rolling rolled material on a conveyor line in rolling equipment, and in particular, rolled material can be rolled around the center of a rolling pass line. The present invention relates to a rolled material rolling device.

[Prior Art] Conventionally, a rotary frame is rotatably provided on a pedestal provided on a rolled material transport table with the center of the transport line as the center of rotation, and a pair of upper and lower pinch rolls are arranged to face the rotary frame. There is known a rolled material rolling device in which the rolled material can be held at a position eccentric from the center of rotation of a rotary frame by narrowing the interval between pinch rolls (see Japanese Patent Laid-Open No. 57-81914).

[Problems to be Solved by the Invention] However, in this rolled material rolling device, after sandwiching the rolled material between the pinch rolls while being placed on the conveying rollers before and after the pinch rolls, the clamping force is slightly increased. After warming, the rotating frame is rotated 90 ° to slide the rolled material between the pinch rolls in the axial direction of the roll, and the rolled material is rotated 90 ° while maintaining the mounted state. Since the centers of the rolled materials do not coincide with each other and the center positions of the rolled materials differ before and after the turning, it is necessary to forcibly shift the rolled material to the center of the carrying line on the carrying roller when feeding the rolled material after turning into the mill. For this reason, the rolled material and the conveying roller are rubbed and scratched, which impairs the product quality and damages the rolling equipment.

[Object of the Invention] The present invention has been made to solve the above-mentioned problems, and makes it easy to feed the rolled material to the subsequent-stage mill by turning the rolled material by aligning the center of the rolled material with the center of the pass line of the mill, and The purpose is to improve quality.

[Means for Solving the Problems]

As shown in FIGS. 1 to 4, the rolling material rolling device of the present invention sets the upper surface of the conveying table 1 provided in the preceding stage of the mill lower than the upper surface of the lower roll 20 of the mill, and The table 1 is provided with a rotary frame 4 capable of rotating in the forward and reverse directions within a certain angle range around the pass line center L of the mill, and the rotary frame 4 is provided with a pair of upper and lower pinch rolls 8A and 8B. 8A is fixed, the lower pinch roll 8B is movably provided, and the fixed upper pinch roll 8A
Is provided so that when the rolled materials M ₁ and M ₂ are brought into contact with the pinch roll, the center of the rolled material and the pass line center L of the mill are concentric with each other, and the lower pinch on the movable side is provided. roll
8B is provided so as to be able to move back and forth with respect to the upper pinch roll 8A from a position below the upper surface level of the transport table 1, and the object is achieved by such a configuration.

[Action]

When the movable-side lower pinch roll 8B moves up with respect to the fixed-side upper pinch roll 8A, the rolled materials M ₁ and M ₂ move to the lower-side pinch roll 8B.
Thus, it is lifted up to a position where it does not interfere with the transport table 1 during turning, abuts against the upper pinch roll 8A, and is sandwiched between the upper and lower pinch rolls 8A and 8B. At this time, the centers of the rolled materials M ₁ and M ₂ coincide with the pass line L of the mill. Next, while maintaining this state, the rolled material M ₁ or M ₂ is turned by 90 °. After that, the upper and lower pinch rolls 8A and 8B are rotationally driven in the feed direction, and the rolled materials M ₁ and M ₂ are fed to the post-mill as they are.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 3, reference numeral 1 denotes a rolled material conveying table arranged between the former mill and the latter mill, for a rolled material M ₁ having a rectangular cross section and for a rolled material M ₂ having a rhombic cross section. The thing and the thing are installed side by side. Each of them is composed of a plurality of conveying rollers 2 arranged in parallel at a predetermined interval, and the table upper surface is set lower than the upper surface of the lower roll 20 of the mill.

Reference numeral 3 denotes a support frame that rotatably supports the rotating frame 4, and is disposed between predetermined transport rollers 2 that can traverse one or the other of the transport tables 1 and can be disposed.

A plurality of rollers 5 and one sprocket 6 are rotatably attached to the support frame 3 so as to be located outside the rotary frame 4. A rotary frame 4 is rotatably supported in the support frame 3 via rollers 5 about a pass line center L of the mill.

A chain 7 is wound around and fixed to the outer peripheral surface of the cylindrical portion of the rotary frame 4, and the sprocket 6 is meshed with the chain 7. The rotary frame 4 is rotated in the forward and reverse directions by a drive device through the sprocket 6. It is possible.

8A and 8B are a pair of upper and lower pinch rolls, one of which is vertically opposed to the material feeding side of the rotary frame 4 and the other is movably provided. Then, the pinch roll 8A on the fixed side, when the rolled materials M ₁ and M ₂ are brought into contact with the pinch roll 8A, the rolled material M
_It is fixedly provided on the material discharge side of the rotary frame 4 so that the centers of ₁ and M ₂ and the mill pass line center L are concentric with each other, and is rotatably mounted via bearings.

The pinch roll 8B on the movable side is rotatably attached via a bearing to the tip of a clamp arm 10 whose base end is pivotally attached via a pin 9 to the material-entry side of the rotary frame 4. A pinch cylinder 11 having one end connected to the clamp arm 10 and the other end connected to the rotating frame 4
The clamp arm 10 is rotated about the pin 9 by the hydraulic cylinder (in the embodiment), so that the movable pinch roll 8B is positioned below the upper surface level of the transport table 1 with respect to the fixed side pinch roll 8A. It can be opened and closed so as to approach from and return to this position.

On the outer peripheral surface of the pinch rolls 8A, 8B, a flat surface 12 that abuts the parallel side surface of the rolled material M _{1 having} a rectangular cross section, and the flat surface 12
The opening in the central portion has a V-shaped groove surface 13 in contact with the corner portion of the rolled material M ₂ diamond cross section are formed to face each other, even rolled material M ₁ for conveying table 1 of rectangular cross-section It can also be used with the transport table 1 for rolled material M _{2 having a} rhombic cross section.

In Figure 4, 14 is supported roller, long rolled material M ₂ for conveying table 1 diamond cross-section, are rolled rolled material M ₂ when is away between the position and the preceding mill rolled turning device The pinch rolls 8A and 8B are arranged between predetermined conveying rollers 2 so as to be fed between the groove surfaces 13 of the pinch rolls 8A and 8B while maintaining the protruding posture.

The support roller 14 is rotatably attached via a bearing to a tip end portion of a swing arm 16 provided so as to be movable up and down by a lifting cylinder 15, and is normally lowered below the upper surface level of the transport table 1. When the rolled material M ₂ advances, it is arranged above the upper surface level of the transport table 1 and can support the rolled material M ₂ .

In the above configuration, when the rod shortening operation of the pinch cylinder 11 is performed with the tip of the rolled material M ₁ or M ₂ sent from the preceding mill passing between the pinch rolls 8A and 8B,
As shown in FIG. 6 (a) and FIG. 6 (a), the movable side pinch roll 8B rises (closes) with respect to the fixed side pinch roll 8A, and FIG. 5 (b) and FIG. 6 (b) Rolled material as shown in
M ₁ or M ₂ is lifted by the pinch roll 8B to a position where it does not interfere with the transport table 1 during turning, and the pinch roll 8A
And is pinched between the pinch rolls 8A and 8B. At this time, the rolled material M ₁ or M ₂ is concentric with the center L of the pass line of the mill.

Next, when the sprocket 6 is rotated by the driving device and the rotary frame 4 is rotated 90 ° in one direction via the chain 7, as shown in FIGS. 5 (c) and 6 (c), The rolled material M ₁ or M ₂ is turned by 90 ° while maintaining the state of being concentric with the center L of the pass line.

Even when the rolling is completed, the rolled material M ₁ or M ₂ is concentric with the mill pass line center L, so the pinch rolls 8A and 8B are rotationally driven in the feed direction, and the transport table 1 is driven to perform rolling. The material M ₁ or M ₂ is sent as it is to the subsequent mill having a roll interval corresponding to the vertical dimension of the rolled material after turning.

After the rolled material M ₁ or M ₂ is conveyed to the subsequent mill, the rotary frame 4 is rotated in the reverse direction, the rod extension operation of the pinch cylinder 11 is then performed, and the lower pinch roll 8B moves below the upper surface level of the conveyance table 1. It descends (opens) to the position and returns to the original standby state. Switching between the rolled materials M ₁ and M ₂ is performed by traversing the rolled material rolling device from one side of the transport table 1 to the other side.

[Effects of the Invention] As described above, the present invention has a pair of upper and lower pinch pins for rolling so that the center position of the rolled material does not change before and after turning and does not interfere with the transport table during turning. It is sandwiched by rolls and placed concentrically with the center of the mill's pass line, and it is rotated about the center of the mill's pass line.Therefore, the rolled material after turning can be sent as it is to the subsequent mill, and it can be sent to the subsequent mill. It becomes easier and the rolling cycle can be improved. Further, since the center of the rolled material is aligned with the center of rotation and the center of the pass line of the post-mill, it is possible to handle not only rolled materials having different sizes but also various rolled materials having different cross-sectional shapes. .

Further, unlike the conventional case, the rolled material sandwiched between the pinch rolls is not slid in the roll axial direction, and after turning,
Since the rolled material does not have to be forcibly displaced on the transport center of the transport table, it is difficult for the rolled material to be pinched or scratched, improving product quality and reducing damage to the transport rollers to reduce equipment life. Can be long

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention, and FIG.
The drawing is a front view taken along the arrow II in FIG. 1, which is a partial cross-section, FIG. 3 is a side cross-sectional view of FIG. 2, and FIG. 4 is a posture maintaining mechanism used for a diamond-shaped cross-section conveying table for rolled material. Partial front view, 5th
Figures (a), (b), and (c) are explanatory diagrams of action during rolling of a rolled material having a rhombic cross section, and Figs. 6 (a), (b), and (c) show when rolling of a rolled material having a rectangular cross section. FIG. L …… (Mill) pass line center M ₁ , M ₂ …… Rolled material 1 …… Conveying table 2 …… Conveying roller 3 …… Supporting frame 4 …… Rotating frame 5 …… Roller 6 …… Sprocket 7 …… Chain 8A, 8B …… Pinch roll 9 …… Pin 10 …… Clamp arm 11 …… Pinch cylinder 12 …… Flat surface 13 …… Groove surface 14 …… Support roller 15 …… Elevating cylinder 16 …… Swing arm 20 …… Lower roll (of mill)

Claims (1)

[Scope of utility model registration request] 1. An upper surface of a conveying table provided in a preceding stage of the mill is set lower than an upper surface of a lower roll of the mill, and the conveying table is normally or reversely rotated around a center of a pass line of the mill. A rotatable rotating frame is provided, a pair of upper and lower pinch rolls are fixed to the rotating frame, the upper pinch roll is fixed, the lower pinch roll is movably provided, and the upper pinch roll on the fixed side is fixed to the pinch roll. When the rolled material is brought into contact, the center of the rolled material and the center of the pass line of the mill are provided to be concentric with each other, and the lower pinch roll on the movable side is positioned below the upper surface level of the transport table. A rolled material rolling device, which is provided so as to be capable of advancing and retreating with respect to the upper pinch roll from a position.