JP2018103244A - Roll unit replacement type roller leveler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll unit replacement type roller leveler capable of quickly replacing a roll unit.SOLUTION: In a roll unit replacement type roller leveler 1 for transmitting rotational power from a rotational driving device 7 to respective ones of a plurality of work rolls 12 and 14 via a leveler body side power transmission shaft 35 and a coupling 40 by connecting both by engaging a key 41 provided to the leveler body side power transmission shaft 35 and a key groove 42 provided to the coupling 40, positioning means 50 is provided for positioning the key 41 in a predetermined position around the axis of the leveler body side power transmission shaft 35 and positioning the key groove 42 in a predetermined position around the axis of the coupling 40 so that the key 41 and the key groove 42 keep an engageable state.SELECTED DRAWING: Figure 4

Description

  TECHNICAL FIELD The present invention relates to a roller leveler used for, for example, removing a winding band or an internal distortion of a steel strip and a metal strip such as aluminum (hereinafter simply referred to as a “band”) fed from a coil mounted on an uncoiler. In particular, the present invention relates to a roll unit exchangeable roller leveler in which a roll unit obtained by unitizing a plurality of rolls that removes curl of the band-like body by bending back the band-like body is configured to be detachable from the leveler body.

  A general roller leveler has a configuration in which an upper roll and a lower roll arranged in a staggered manner so as to sandwich a strip fed from a coil are arranged at a predetermined pitch, and a uniform strip is formed by a plurality of upper and lower rolls. It is configured to remove the curl from the belt-like body by applying a bending back strain (see Patent Document 1).

  If the material and thickness of the belt are different, the diameter and arrangement pitch of multiple rolls used for straightening differ, so it is necessary to construct a processing line for each type of coil or combine multiple roller levelers. is there. For this reason, there are problems that the installation cost increases and a wide installation space must be secured.

  In order to solve such a problem, a roll unit in which a plurality of rolls that repeatedly give back bending strain to the belt-like body is made detachable from the leveler body, and each roll and the rotary drive device are connected via a universal joint. It is conceivable to adopt a structure that connects and replace the roll unit according to the type of coil (see Patent Document 2). In such a configuration, when the roll unit is replaced with the leveler body, the key (or spline) provided on the input shaft portion of the roll in the roll unit to be incorporated into the leveler body and the universal joint By engaging the key groove (or spline groove) provided in the coupling part, the work of fitting the coupling part of the universal joint to the input shaft part of the roll is performed as many times as the number of rolls. The

JP-A-5-169167 No. 7-6777

  However, in the configuration as described above, the position of the key (or spline) provided in the input shaft portion of the roll and the position of the key groove (or spline groove) provided in the coupling portion of the universal joint are from the beginning. There is almost no match, and the alignment work for aligning the position of the key and the key groove by appropriately rotating the roll or universal joint has to be performed a number of times according to the number of multiple rolls. However, there is a problem that the roll unit cannot be replaced quickly.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a roll unit exchangeable roller leveler that can quickly replace a roll unit.

In order to achieve the above object, a roll unit replaceable roller leveler according to the present invention comprises:
A leveler body, a roll unit that can be attached to and detached from the leveler body by unitizing a plurality of rolls that apply a bending return force to a belt-like body that is fed out from a coil, and a rotation drive device that rotationally drives the plurality of rolls. A power transmission shaft and a coupling disposed on a power transmission path between the rotary drive device and the plurality of rolls so as to correspond to each roll, and a key provided on the power transmission shaft and the cup By engaging the key groove provided in the ring and connecting the two, the rotational power from the rotational drive device is transmitted to each of the plurality of rolls via the power transmission shaft and the coupling. Roll unit exchangeable roller leveler,
The key is positioned at a predetermined position around the axis of the power transmission shaft so that the key and the key groove can be engaged with each other, and the key groove is positioned at a predetermined position around the axis of the coupling. A positioning means for positioning is provided (first invention).

  In the present invention, the positioning means includes a key positioning means for engaging a convex portion engageable with the concave portion provided on the power transmission shaft side, and a concave portion provided on the coupling side. It is preferable to configure with keyway positioning means for engaging a convex portion engageable with the concave portion (second invention).

  According to the roll unit exchangeable roller leveler of the present invention, the key is positioned at a predetermined position around the axis of the power transmission shaft so that the key and the key groove can be engaged with each other, and the key around the coupling axis. Since the key groove is positioned at the predetermined position, it is not necessary to align the key and the key groove, which is conventionally required when connecting the power transmission shaft and the coupling. Therefore, the roll unit can be replaced quickly.

  In addition, by adopting the configuration of the second invention, the key can be reliably positioned at a predetermined position around the axis of the power transmission shaft with a simple configuration, and a key groove can be formed at a predetermined position around the axis of the coupling. Positioning can be ensured.

It is a front view of a roll unit exchange type roller leveler concerning one embodiment of the present invention. It is a side view of the roll unit exchange type roller leveler. It is the B section enlarged view of Drawing 2, and is a state figure in which the key and keyway in a joint mechanism are engaged. 3A and 3B are enlarged views of part C, wherein FIG. 3A is a state diagram in which the concave portion and the convex portion of the positioning means are not engaged, and FIG. 3B is a state diagram in which the concave portion and the convex portion of the positioning means are engaged. is there. It is the DD sectional view taken on the line of FIG. FIG. 3 is a cross-sectional view of the main part of the EE line of FIG. 3, (a) is a state diagram in which the concave portion and the convex portion of the positioning means are disengaged, and (b) is an engagement of the concave portion and the convex portion of the positioning means. FIG. FIG. 3 is a cross-sectional view of the main part of the FF line in FIG. 3, (a) is a state diagram in which the concave portion and the convex portion of the positioning means are disengaged, and (b) is an engagement of the concave portion and the convex portion of the positioning means. FIG. FIG. 5 is an enlarged view of a B part in FIG.

  Next, specific embodiments of the roll unit exchangeable roller leveler according to the present invention will be described with reference to the drawings.

<Overview of roll unit replaceable roller leveler>
A roll unit exchangeable roller leveler 1 (hereinafter simply referred to as “roller leveler 1”) shown in FIG. 1 and FIG. 2 is drawn out from a coil mounted on an uncoiler (not shown) so that the plate surface is directed vertically. 1 is used for removing curling or internal distortion of a strip 2 such as a steel strip conveyed in the direction of arrow A, and is attached to the leveler main body 3 and the leveler main body 3 constituting the main body portion. The input side pinch roll 4 and the output side pinch roll 5, a roll unit 6 that is detachably mounted to the leveler body 3, and a rotation drive device 7 that rotationally drives the roll unit 6 are provided.

  The entry-side pinch roll 4 is disposed so as to face the upper and lower sides so as to sandwich the belt-like body 2 from above and below on the upstream side in the transport direction of the belt-like body 2 with respect to the leveler body 3. On the other hand, the output side pinch rolls 5 are opposed to each other vertically so as to sandwich the belt-like body 2 from above and below on the downstream side in the transport direction of the belt-like body 2 with respect to the leveler body 3.

<Description of roll unit>
The roll unit 6 is a combination of an upper roll unit 6a and a lower roll unit 6b that are divided vertically. In a state where the roll unit 6 is incorporated in the leveler body 3, the upper roll unit 6 a is lifted and lowered by the lifting mechanism 8 along a guide provided in the leveler body 3.

  The upper roll unit 6a is mainly constituted by an upper bearing 11 and an upper work roll 12, and the lower roll unit 6b is mainly constituted by a lower bearing 13 and a lower work roll 14. A plurality of upper work rolls 12 (five in this example) are arranged at a predetermined pitch in the transport direction of the strip 2 on the upper side of the transport path of the strip 2, and the lower work roll 14 is a transport path of the strip 2. A plurality of (six in this example) are arranged at a predetermined pitch in the conveying direction of the band 2 on the lower side.

  Each work roll 12, 14 has shaft portions 15a, 15b formed on both sides and a roll portion 16 formed between the shaft portions 15a, 15b. In the upper work roll 12, the shaft parts 15 a and 15 b are rotatably supported by the upper bearing 11, and the roll part 16 is supported by a backup roll 17. On the other hand, in the lower work roll 14, the shaft parts 15 a and 15 b are rotatably supported by the lower bearing 13, and the roll part 16 is supported by a backup roll 18. The upper and lower work rolls 12, 14 are arranged in a zigzag manner in the transport direction of the strip 2, and the upper and lower work rolls 12, 14 arranged in a zigzag form give an appropriate bending back strain to the strip 2. Thus, the curl of the belt-like body 2 is removed.

<Description of Rotation Drive Device>
The rotary drive device 7 includes two drive motors 21 and a gear box 22 (only one is shown in FIG. 2).

  The gear box 22 includes a casing 23, two input shafts 25 (only one is shown in FIG. 2) that are rotatably supported by the casing 23 so as to correspond to the output shafts 24 of the drive motors 21, and a plurality of gear boxes 22. The casing 23 can be rotated so as to correspond to the input shaft portion integrally formed with the shaft portion 15b on the side arranged toward the drive motor 21 in each of the work rolls 12 and 14 (total 11 in this example). And a plurality of (11 in this example) output shafts 26 and required gears (not shown) that are assembled in the casing 23 between the input shaft 25 and the output shaft 26 so as to transmit power. It is configured.

  In the rotary drive device 7, each input shaft 25 of the gear box 22 and the output shaft 24 of each drive motor 21 are connected by a flange-shaped flexible shaft joint 27, and the rotational power from the output shaft 24 of each drive motor 21 is connected. Is transmitted from each input shaft 25 of the gear box 22 to each output shaft 26 of the gear box 22 via a required gear in the casing 23.

<Description of joint mechanism>
A joint mechanism 30 is provided between the roll unit 6 and the rotation driving device 7. The joint mechanism 30 includes a leveler body side wall plate 31 and a roll unit side wall plate 32 that are arranged with their wall surfaces facing each other. The leveler main body side wall plate 31 is fixed to a leveler main body side bracket 33 protruding from the leveler main body 3 toward the rotation driving device 7, and the roll unit side wall plate 32 is fixed to the frames 11 and 13 in the roll unit 6.

  As shown in FIG. 3, a plurality of leveler body side power transmission shafts 35 are rotatably supported on the leveler body side wall plate 31 so as to correspond to the plurality of output shafts 26 provided in the gear box 22. ing. On the other hand, a plurality of roll unit side power transmission shafts 36 are rotatably supported on the roll unit side wall plate 32 so as to correspond to the plurality of leveler body side power transmission shafts 35.

  Each output shaft 26 provided in the gear box 22 and each leveler body side power transmission shaft 35 are connected by a universal joint 37 so that power can be transmitted. On the other hand, each roll unit side power transmission shaft 36 and the input shaft portion of each work roll 12, 14 are connected by a universal joint 38 so that power can be transmitted. Between each leveler main body side power transmission shaft 35 and the roll unit side power transmission shaft 36, a coupling 40 provided integrally with the roll unit side power transmission shaft 36 is interposed.

  In the joint mechanism 30, as shown in FIG. 5, a key 41 provided on each leveler main body side power transmission shaft 35 and a key groove 42 provided on the coupling 40 are engaged to couple them together. Thus, the rotational power transmitted from the output shaft 26 to the leveler main body side power transmission shaft 35 via the universal joint 37 in the rotational drive device 7 is transferred to the workpiece via the coupling 40, the roll unit side power transmission shaft 36 and the universal joint 38. It can be transmitted to the rolls 12 and 14.

<Description of positioning means>
As shown in FIG. 3, the joint mechanism 30 is provided with positioning means 50 for maintaining a state where the key 41 and the key groove 42 (see FIG. 5) can be engaged. The positioning unit 50 includes a key positioning unit 51a and a keyway positioning unit 51b.

  The key positioning means 51a is for positioning the key 41 at a predetermined position around the axis of the leveler main body side power transmission shaft 35, and the outer periphery of the flange 52 provided integrally with the leveler main body side power transmission shaft 35. A concave portion 53 formed in the portion, an air cylinder 54 having a piston rod attached to the leveler body side wall plate 31 and capable of moving forward and backward with respect to the concave portion 53, and a concave portion 53 formed at the tip of the piston rod of the air cylinder 54. And a convex portion 55 that can be engaged.

  In the key positioning means 51a, the convex portion 55 can be engaged with the concave portion 53 by extending the air cylinder 54, and the air cylinder 54 is operated when the concave portion 53 and the convex portion 55 are in the engaged state. By engaging in contraction, the engagement between the concave portion 53 and the convex portion 55 can be released.

  The key groove positioning means 51b is for positioning the key groove 42 (see FIG. 5) at a predetermined position around the axis of the coupling 40. The key groove positioning means 51b includes a recess 61 formed on the outer periphery of the cup rig 40, and a coupling. 40, a driven rod 62 attached to the roll unit side wall plate 32 so as to be capable of reciprocating, a convex portion 63 formed at the distal end portion of the driven rod 62 and engageable with the concave portion 61, and a driven member orthogonal to the driven rod 62. And a drive rod 64 mounted on the roll unit side wall plate 32 so as to be capable of reciprocating with respect to the rod 62.

  As shown in FIG. 4A, the piston rod of the air cylinder 65 attached to the roll unit side wall plate 32 is connected to the base end portion of the drive rod 64. A piece 66 is formed at the tip of the drive rod 64. The piece 66 has a forward mountain portion 67 that protrudes in the direction in which the driven rod 62 advances toward the concave portion 61, and a backward mountain portion 68 in which the driven rod 62 protrudes in a direction away from the concave portion 61. The portion 67 and the return side mountain portion 68 are disposed with their positions shifted in the reciprocating direction of the drive rod 64. The piece 66 is connected to a manual operation rod 69 for manually reciprocating the drive rod 64.

  A notch portion that is notched long in the axial direction is formed in the axially intermediate portion of the driven rod 62, and a piece portion 66 is engaged with this notch portion and can come into contact with the forward path side mountain portion 67. In addition, an outward path roller 71 is disposed, and an inward path roller 72 is disposed so as to be able to contact the inward path mountain portion 68.

  As shown in FIG. 4 (a), in the keyway positioning means 51b, the air cylinder 65 is extended (in the case of manual operation, pulling operation of the manual operation rod 69), so that the forward side mountain portion 67 is moved to the forward side. When the driven rod 62 is pushed out toward the coupling 40 by being brought into contact with the roller 71, the convex portion 63 can be engaged with the concave portion 61, and the concave portion 61 and the convex portion 63 are in an engaged state. By retracting the air cylinder 65 (in the case of manual operation, the manual operation rod 69 is pushed), as shown in FIG. 4 (a), the return side crest 68 is brought into contact with the return side roller 72, The driven rod 62 is pulled away from the coupling 40 so that the engagement between the concave portion 61 and the convex portion 63 can be released.

  In the present embodiment, a detection signal from an encoder attached to the drive motor 21 is sent to a control device (not shown) installed in the roller leveler 1, and the control device executes arithmetic processing based on this detection signal. Then, the current position of the key 41 around the axis of the leveler body side power transmission shaft 35 is obtained. In addition, the control device feeds back the current position of the key 41 obtained based on the detection signal from the encoder, and places the key 41 at a predetermined position around the axis of the leveler body side power transmission shaft 35 to transmit the power to the leveler body side. The rotation of the drive motor 21 is controlled so as to stop when the shaft 35 is rotated to a predetermined position.

<Description of roll unit replacement work>
In the roller leveler 1 configured as described above, when the roll unit 6 is replaced, a roll unit removing operation and a roll unit attaching operation are performed.

<Description of roll unit removal work>
First, as shown in FIGS. 4 (a), 6 (a) and 7 (a), the concave portions 53 and 61 and the convex portions 55 and 63 are formed by the rotation control of the drive motor 21 by a control device (not shown). The key 41 is positioned at a predetermined position around the axis of the power transmission shaft 35 on the leveler body side so as to face each other. Next, as shown in FIG. 4B, FIG. 6B, and FIG. 7B, the air cylinders 54 and 65 are extended to engage the convex portions 55 and 63 with the concave portions 53 and 61, respectively. . As a result, the key 41 is positioned at a predetermined position around the axis of the leveler main body side power transmission shaft 35 so that the key 41 and the key groove 42 can be engaged with each other, and at the same time around the axis of the coupling 40. The keyway 42 is positioned at a predetermined position. Thereafter, the roll unit 6 is pulled out from the leveler body 3 by a transport carriage (not shown) equipped with a push-pull device having a function of pushing and pulling the roll unit 6 with respect to the leveler body 3, and as shown in FIG. The engagement between the key 41 and the keyway 42 is released, and it is transported to a roll unit storage location, for example.

<Description of roll unit installation work>
A transport carriage (not shown) on which a roll unit 6 corresponding to the type of coil to be processed is placed is stopped at a predetermined position near the leveler body 3, and the roll unit 6 is pushed into the leveler body 3. At this time, as shown in FIG. 8, the key 41 is positioned at a predetermined position around the axis of the leveler body side power transmission shaft 35 by the key positioning means 51a, and the key groove 42 is formed by the key groove positioning means 51b. Since it is positioned at a predetermined position around the axis of the coupling 40, the key 41 and the key groove 42 can be smoothly engaged.
Thereafter, the air cylinders 54 and 65 are contracted to engage the concave portions 53 and 61 with the convex portions 55 and 63 as shown in FIGS. 4 (a), 6 (a) and 7 (a). When the engagement is released and the engagement is confirmed by a detection signal such as a phototube, for example, the driving motor 21 is driven to apply a uniform bending return force to the belt-like body 2 by the upper and lower work rolls 12 and 14. The band 2 is corrected.

<Description of effects>
According to the roller leveler 1 of the present embodiment, the key 41 is positioned at a predetermined position around the axis of the leveler body side power transmission shaft 35 so that the key 41 and the key groove 42 can be engaged with each other, Since the key groove 42 is positioned at a predetermined position around the axis of the coupling 40, the key 41 and the key groove 42, which are conventionally required when connecting the power transmission shaft 35 and the coupling 40 to the leveler main body side, The alignment work is no longer necessary. Therefore, the roll unit 6 can be replaced quickly.

Moreover, according to the roller leveler 1 of this embodiment and the press work line incorporating it, the following effects can be obtained.
(1) High-strength steel plates, aluminum plates, thick plates, thin plates, etc. can be properly corrected in one line, in other words, the number of lines required for correction can be reduced and installation costs can be reduced. In addition, the installation space can be saved.
(2) Improving the straightening ability of the roller leveler 1 by quickly replacing the roll unit 6 adopting a work roll diameter, roll pitch or the like that can perform the appropriate straightening required for the roller leveler 1 according to the type of coil. In addition, if the roll unit 6 is quickly replaced simultaneously with the replacement of the die of the press working apparatus, the setup time can be greatly saved.
(3) Conventionally, the maintenance and inspection of the work rolls 12, 14, etc. had to stop the press processing line and perform work in the line, but the roll unit 6 was removed from the leveler body 3 and the work roll was offline. Maintenance inspection work such as 12, 14 can be performed, and the work can be performed more safely.
(4) It is possible to replace and replace the roller leveler with a plate thickness and material different from those of the existing roller leveler at low cost, and the performance of the press working line by retrofit can be improved.
(5) The rotational drive device 7 can incorporate a speed switching mechanism, and can be operated at an appropriate speed in a high torque / low speed region (the appropriate drive motor 21 can be selected and an excessive motor output is not required).

  As described above, the roll unit exchangeable roller leveler of the present invention has been described based on one embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the configuration is appropriately set within the scope not departing from the gist thereof. Can be changed.

  For example, in the above-described embodiment, as a structure of a connecting portion capable of transmitting power between the leveler body side power transmission shaft 35 and the coupling 40, one key 41 provided on the leveler body side power transmission shaft 35 and the cup Although an example in which one key groove 42 provided in the ring 40 is engaged is illustrated, the present invention is not limited to this. For example, a plurality of keys are formed on the power transmission shaft 35 on the leveler body side. It is also possible to adopt a so-called spline fitting in which a plurality of grooves that can be engaged with a plurality of keys are formed in the coupling 40 and the plurality of keys and the plurality of grooves are fitted together. .

  In the above-described embodiment, the roll unit of the same type can be replaced quickly, and different roll units can be replaced quickly.

  The roll unit exchange type roller leveler according to the present invention has a characteristic that the roll unit can be exchanged quickly, so that, for example, a press for exchanging the roll unit in accordance with changes in the material of the strip or the plate thickness. It can be suitably used for the purpose of correcting strips in the processing line, and the industrial applicability is great.

DESCRIPTION OF SYMBOLS 1 Roll unit exchange type roller leveler 2 Strip | belt-shaped body 3 Leveler main body 6 Roll unit 7 Rotation drive device 12,14 Work roll 35 Leveler main body side power transmission shaft 40 Coupling 41 Key 42 Key groove 50 Positioning means 51 Key positioning means 52 Key groove positioning means

Claims (2)

A leveler body, a roll unit that can be attached to and detached from the leveler body by unitizing a plurality of rolls that apply a bending return force to a belt-like body that is fed out from a coil, and a rotation drive device that rotationally drives the plurality of rolls. A power transmission shaft and a coupling disposed on a power transmission path between the rotary drive device and the plurality of rolls so as to correspond to each roll, and a key provided on the power transmission shaft and the cup By engaging the key groove provided in the ring and connecting the two, the rotational power from the rotational drive device is transmitted to each of the plurality of rolls via the power transmission shaft and the coupling. Roll unit exchangeable roller leveler,
The key is positioned at a predetermined position around the axis of the power transmission shaft so that the key and the key groove can be engaged with each other, and the key groove is positioned at a predetermined position around the axis of the coupling. A roll unit exchangeable roller leveler characterized by providing positioning means for positioning. The positioning means includes a key positioning means for engaging a convex portion engageable with the concave portion provided on the power transmission shaft side, and a concave portion provided on the coupling side. 2. The roll unit replaceable roller leveler according to claim 1, comprising key groove positioning means for engaging the mating convex portions.

Images