KR100772834B1 - Apparatus for exchanging the work rolls in the tension leveller - Google Patents

Abstract

The present invention relates to an apparatus for extracting a closed work roll rotatably mounted by a bearing block provided at a front end of a unit of a tension leveler and replacing the work roll by mounting a new work roll to the unit. A work trolley which is mounted on the upper and lower sides of a moving trolley which is movable toward and a rotatably mounted around the axis of rotation in the transverse trolley, and on which the new work roll and the closed work roll are respectively seated. A waste work roll receiving portion for receiving a base, a work roll supply portion for supplying a new work roll to the first seating portion of the work roll waiting portion, and waste work rolls discharged from the second seating portion of the work roll waiting portion; Holding one end of the waste work roll exposed by separating the bearing block from the unit and waiting for the work roll from the unit. It is characterized in that it consists of a work roll moving unit for entering the new work roll seated on the first seat of the work roll waiting portion into the unit after withdrawing to the second seat of the work roll, It can be exchanged quickly.

Gripping means, moving trolleys, work roll waiting unit, work roll moving unit

Description

Apparatus for exchanging the work rolls in the tension leveller}             

1 is a view showing a state in which a work roll is mounted on a unit of a general tension leveler;

2 is a view showing a change car for withdrawing a unit of a tension lever according to a conventional embodiment;

3 is a view showing a tension leveler work roll changing device according to the present invention;

4 is a view showing a state in which a work roll changer according to the present invention is installed adjacent to a unit of a tension leveler;

5 is a view showing a work roll moving part of the tension leveler work roll changing device according to the present invention;

Figure 6 is a view showing a work roll waiting portion of the tension leveler work roll change device according to the present invention;

7 is a view showing a new work roll loading portion of the new work roll supply unit of the tension leveler work roll exchange device according to the present invention;

8 is a view showing a new work roll supply stand of the new work roll supply unit of the tension leveler work roll change device according to the present invention;

9A is a view showing a drive unit of the work roll moving unit of the tension leveler work roll changer according to the present invention, and FIG.

10 is a view showing a closed work roll receiving portion of the tension leveler work roll changing device according to the present invention;

11 is a view showing a moving trolley driving unit of the tension leveler work roll changing device according to the present invention;

12 is a view of an improved tension leveler unit in accordance with the present invention;

13A-13G are views sequentially showing the operation of replacing the tension leveler work roll in accordance with the present invention;

14A to 14C are views sequentially showing the rotational state of the work roll waiting portion of the tension leveler work roll changer according to the present invention;

<Description of Symbols for Major Parts of Drawings>

5: Rotating Motor

7: work roll seat

15: axis of rotation

35: new work roll pile

71: change car

82: closed work roll pile

89: holding part                 

a1: waste work roll

a1-1: new work roll

The present invention relates to a tension leveler work roll exchange device capable of exchanging a work roll of a tension leveler installed in a cold rolling line to remove a scale layer formed on a strip and removing a scale layer formed on a surface of the strip leveling path. More specifically, it is possible to mount a new work roll to the unit after drawing out only the work roll from the plate path using a change car without pulling out the unit of the tension leveler supporting the work roll from the plate path of the strip. It relates to a work roll change device of a tension leveler.

In general, a tension leveler is used for descaling strip surfaces by imparting shape correction and mechanical tension of the strips. It is difficult to perform the leveler rolls of the tension leveler, particularly the work rolls, on a cold rolling line in which continuous work is performed. Therefore, the leveler roll replacement work is performed by two or more workers who manually operate a predetermined changer, pull out the tension leveler unit supporting the work roll from the mailing path where the strip proceeds, and then change the work roll. By providing the unit to the plate path.

That is, referring to FIG. 1, the tension leveler A installed on the plate path of the strip S may include a unit a5 slidably mounted on the first rail a6 through a roller a7. A backup roll a2 supported by the unit a5, and a work roll a1 seated on the backup roll a2 and fixed by a swing bearing block a3 provided on the front upper part of the unit a5. do. A fastening first pinhole block a8 is provided at the front lower part of the unit a5.

Referring to FIG. 2, the change car B for withdrawing the unit a5 from the plate path of the strip has a second roller b15 on the second rail b14 corresponding to the first rail a6. It consists of a square frame (b3) slidably mounted through. Inside the rectangular frame b3, a driving motor b9 is installed to transmit rotational force to the second roller b15 through the transmission belt b11, and corresponds to the first pinhole block a8 of the tension leveler A. As shown in FIG. The second pinhole block b2 is provided at one side of the rectangular frame b3. In addition, the fastening pins b4 for releasably coupling the first pin holes a8 and the second pin holes b2 are stored in the pin barrel b5 provided on one side of the rectangular frame b3.

First, in order to pull out the work roll a1 from the tension leveler A, the drive motor b9 is driven to move the change car B to the tension leveler A, and then, using a fastening pin b4 to each other. The corresponding first pin hole block a8 and second pin hole block b2 are connected. Then, by driving the drive motor b9 back, the tension leveler unit a5 is taken out from the plate path through which the strip S proceeds. In this manner, after the withdrawal of the tension leveler A is completed, the fastening bolt a4 is released to separate the swing bearing block a3 from the unit a5, and the work roll a1 is withdrawn by a crane (not shown). . Then, the new work roll is mounted on the backup roll a2 using the crane, and the swing type bearing block a3 is fixed to the unit a5 using the fastening bolt a4.

Then, by driving the drive motor b9, the tension leveler unit a5 is positioned on the plate path, the fastening pins b4 are pulled out to separate the pinhole blocks a8 and b2, and then the drive motor b9 is again turned on. The reverse operation is completed to replace the leveler roll by drawing out the change car B.

As described above, in order to carry out the work roll exchange, the unit a5 of the tension leveler A is withdrawn from the plate path, the work roll a1 is replaced with a new work roll, and the unit a5 is then plated. Since it was necessary to enter the route, excessive work time was required for the exchange work.

In addition, when the work roll is exchanged, the fastening bolt (a4) is released, the work roll (a1) is separated from the swing bearing block (a3), and the work roll is transported using a crane. As work roll change is performed through work, roll change work time is delayed and there is a risk of safety accident.

The present invention has been made to solve the conventional problems as described above, a mail order that the strip proceeds so as to eliminate the risk of the automation of the roll exchange operation to replace the work roll of the tension leveler and the occurrence of equipment shutdown and safety accidents SUMMARY OF THE INVENTION An object of the present invention is to provide a tension leveler work roll exchange device capable of exchanging a work roll of a tension leveler on the plate path without having to take out the tension leveler unit from the path.

In order to achieve the above object, according to the present invention, the work roll is exchanged by drawing out a closed work roll rotatably mounted by a bearing block provided at the front end of the unit of the tension leveler and attaching the new work roll to the unit. The device is a movable trolley movable toward the unit and rotatably mounted about a transverse axis of rotation on the trolley, and a pair of seating platforms on which the new work roll and the closed work roll are respectively seated is provided at the top and the bottom. A work roll holding portion provided, a new work roll supply portion for supplying a new work roll to the first seating table of the work roll holding portion, and a waste work roll discharged from the second seating portion of the work roll holding portion; The waste work roll receiving portion and one end of the waste work roll exposed by separating the bearing block from the unit are gripped to the unit. Emitter and the work (W) after the take-off roll air portion in the second mounting new work roll that is secured to the first mounting for the work roll air portion wherein the portion made of the work roll movement, which enters the unit.

Hereinafter, a tension leveler work roll changing device according to the present invention will be described with reference to the accompanying drawings, and the same components are assigned the same reference numerals. In this specification, the term closed work roll means a work roll a1 mounted on a unit of a tension leveler, and the term new work roll means a work roll a1-1 waiting to be replaced.                     

According to the present invention, the apparatus for exchanging the work roll of the tension leveler on the plate path through which the strip proceeds draws out the waste work roll a1 from the tension leveler unit a5 and enters the new work roll a1-1. It has a work roll moving part which is movable in a lateral direction. The work roll moving part is fixed to an upper portion of the base 23 mounted on the moving trolley 115 which is installed to be movable along the ground rail 113.

On the base 23, support beams 1 and 29 are rotatably supported, which rotatably support both ends of the transverse rotation axis 15 of the work roll standby described below. The rotary motor base 9 is coupled to an intermediate portion of the support base 8 positioned outside the first support beam 1, and the rotary motor base 9 is rotated to rotate the work roll waiting part. The motor 5 is provided. The upper end of the support base 8 is provided with an upper base 3 on which the rear end is supported by the support beam 6, and a rail 4 is provided on the upper base 3. One side of the upper base 3 is provided with a home position sensor (a) and a weighting position sensor (b) for detecting the position of the work roll moving unit (described below).

The rotary motor 5 is provided with a PLG sensor 5-1 in which rotation data is embedded. The bearing block 2 is coupled to the front of the rotary motor 5, the bearing block 2 is firmly supported by the support beam (1). The bearing block 2 is connected to the support frame 14 to which the rotating shaft 26 and the bearing 14-1 are coupled, and one end of the rotating shaft 15 is coupled to the bearing 14-1 of the supporting frame 14. do.

At this time, the guide support base 11 coupled with the rail 10 and the roll seat 7 is provided on the work roll moving part, and the guide support base 11 is supported by the guide 20 provided below. Work roll clamps 12 are coupled to both sides of the guide 20 through the guide frame 28. The guide frame 28 is provided in a structure in which a gear 17 having one end connected to the rotary motor 13 and a bidirectional screw gear 21 forming a bevel gear are coupled.

The other end of the gear 17 is connected to the bearing block 22, the bearing block 22 is coupled to the rotary shaft 15 together with the rotary motor 13. Both ends of the rotating shaft 15 are rotatably supported by the frames 14 and 24.

The bearing block 2-1 is supported by the second support beam 29, and the base 30, on which the rail 4-1 is provided, is mounted on the upper end of the second support beam 29. (30) On the side is provided position sensor (e, h). The lower part of the base 23 on which the support beams 1 and 29 are provided is supported by the elevating cylinder 27, and the base 25 is provided below the elevating cylinder 27. An inout motor 109 is provided between the bases 23 and 25, and the rotary gear 111 provided to the inout motor 109 is connected to the rotary wheel gear 110 through the chain belt 112. The rotary wheel gear 110 is mounted on the rail 108 provided on the main base 107. The base 107 is provided with a weighted position sensor f, a forward sensor g, and a backward end sensor i for detecting movement of the work roll moving part.

On the other hand, referring to Figure 7, the rotary motor 37 is provided on the support base 40. In front of the rotary motor 37 is coupled a rotating screw 39 is mounted with a pusher head 38 for the new work roll. The end of the rotating screw 39 is supported by the bearing block 46. A guide 44 for the pusher head 38 is provided on the support beams 45-1, 45-2, 45-3 provided below the rotating screw 39. As shown in FIG. In addition, one side of the rotating screw (39) is provided with a roll restoring base (35) in an inclined downward state, and a separator (34) for separating the new work roll (a1-1) that is placed on the roll restoring base (35). A plurality of are provided. Between the separators 34 are provided with a sensor 36 for detecting the stacked Shin walk roll. The lower end of the roll mounting base base 35 is provided with a burr 33 which is supported at both ends by the support beam 32.

The lower portion of the roll holder base 35 is provided with a rotary wheel 50 which is movable along the rail 48, and the rotary wheel 50 is connected by the frame 49. The frame 49 is coupled to a cylinder 51 provided at the rear of the roll rest base 35, and on the frame 49 a shinwork roll feed table 47 is provided.

Referring to FIG. 8, a support beam 64 in an upright state is coupled to the base 67 by a bolt 66, and a connection shaft 61 connected to the support beam 65 is supported on the support beam 64 at a lower end thereof. Combined thinwork roll feeds 68 are provided. The new work roll supply base 68 is provided with three new work roll detection sensors 62, 62-1, 63. The new work roll supply base 68 is provided with a supply cylinder 60, and the supply cylinder 60 is coupled with a shaft 57 to which a work roll supply seat 58 is connected. In addition, the supply clamp 59 is coupled to the cylinder 68 connected to the new work roll supply base 68 together with the rotation shaft 68-2, and a cylinder 59-1 is placed on the base 67 at the lower part of the clamp. do.

The new work roll supply base 68 has a feeder cover 56 connected to the rotating shaft 61, a cover 56 connected to the cylinder 53, and up-down sensors 54 and 55 positioned therein to form a shaft 55. ) Is combined. The position sensor 117 is attached to the side surface of the new work roll supply stand 68.                     

9A and 9B, the work roll change car includes wheels 74 and 74-1 connected to the rotation shaft 75, and the rotation shaft 81 to which the wheel 73 and the gear wheel 83 are connected is a change car box. It is fastened through the hole 84 of 72. The front surface of the box 72 is formed with a square groove 82, the upper portion of the change car box hedge 71 provided with a handle (not shown) is coupled.

A rotating motor 77 having a gear wheel 83 and a rotating gear wheel 78 connected to the belt 80 is fixed to the base 79 through a bolt 76. The work roll clamp cylinder 86 is coupled to the base 90 provided in the rear of the change car box 72, and the cylinder 86 is provided with a coupling shaft 85 that engages with the rack, and the coupling shaft 85. It is provided with a clamp open sensor (c) and a close sensor (d), the work roll clamps (89, 93) with a cylindrical gear 88 is connected to the upper and lower portions of the coupling shaft. Fixing bases 87 and 92 are coupled to the support beam 91 at upper and lower portions to which the clamps 89 and 90 are connected.

Referring to FIG. 10, the rotating shaft 103 is inserted into the hole 101 formed at the lower end of the closed work roll holder 82, and both ends of the rotating shaft 103 are provided with a bearing block 102 provided on the base 106. 102-1) is rotatably supported. The cylinders 99, 99-1 provided on the base 106 support the upper ends of the closed workroll holders 82. Side guides 98 are provided on both sides of the waste work roll holders 82, and the waste work roll separators 94 for separating the waste work rolls a1 are disposed on the waste work roll holders 82. Are provided in a coupled state. A shock absorbing rubber plate 100 is attached to an inner surface of the lower end portion of the closed workroll placing rack 82. The upper end of the waste work roll loading stand 82 is provided with a waste work roll extraction guide 96 supported by the cylinder 97. The lower part of the closed workroll holder (82) is provided with a position sensor 116 of the rotary feeder.

Referring to FIG. 11, a groove corresponding to the guide rail 113 is formed in the lower portion of the main base 115 so that the moving cart may move along the guide rail 113. The shifting cylinder 114 is coupled to the rear end of the main base 115.

On the other hand, referring to Figure 12, the swing-type bearing block (a3) provided in the front upper part of the unit (a5) of the tension leveler shaft of the lifting cylinder 106 is fixed to the front lower part of the unit (a5) ( 104 is connected to it. By the lifting operation of the lifting cylinder 106, the bearing block a3 is separated from the unit a5 or attached to the unit a5.

Hereinafter, the operation of the work roll changing device of the tension leveler according to the present invention will be described.

In order to replace the closed work roll a1 mounted on the unit a5 of the tension leveler A with the new work roll a1-1, a predetermined position of the tension leveler unit a5 is selected on the operation main screen. After that, start the replacement work. At this time, the starting condition is that the new work roll (a1-1) is seated on the work roll clamp 12, the rotary exchanger is located at the home position, and the clamps 89 and 93 of the work roll change car should be opened. . And the chain car should be located in the home position.

When this condition is established, the shifting cylinder 114 of the exchange device located at the weighting position sensor is first operated to forward and stop to the selected position. When the forward progress is completed, the closed work roll unit to be replaced is pulled down, and the open cylinder 106 of the bearing block 105 is operated to be opened by the shaft 104 connected with the bearing. At this time, the change car is rotated by the rotation of the rotary motor 77, the gear wheel 83 connected to the belt chain 80 is rotated to move simultaneously to the forward weighting position sensor (e).

When this operation is completed, the gear 111 of the draw-out motor 109 of the rotary exchanger rotates, and the gear wheel 110 connected by the belt chain is operated to advance to the forward end position sensor g.

After this, the change car moves to the forward end position sensor h, and the work roll clamp cylinder 86 in the change car box 72 is operated to clamp the clamps 89 and 93 to grip the work roll.

When the series of operations is completed, the change car is forwarded by the drive motor 77 to move back to the change car home position sensor b. When the rotation motor 13 of the work roll clamp 12 rotates after completion of the reverse movement, the connected gear 17-1 rotates and the engaged bidirectional screw gear 21 rotates so that the clamp 12 is coupled to the guide frame 28. By closing the guide 20, the clamp 12 clamps the work roll.

After the work roll clamping is completed, the clamps 89 and 93 of the change car are opened by the cylinder 86, and the change car is returned to the home position.

Thereafter, when the rotary motor 5 of the rotary exchanger rotates in the forward direction (clockwise), the rotary shaft 15 connected to the support frames 14 and 24 rotates, and at this time, the PLG coupled to the motor 5 The rotating shaft 5-2 connected between the support frames 14 by the counter of (5-1) is rotated 180 ° so that the new work roll, which has been bitten by the lower clamp 12-1, rises to the upper part and the roll insert preparation is completed. do.

When the roll insert preparation is completed, the change car moves to the home position, and after completion of the movement, the clamps 89 and 93 clamp the work roll. After clamping the change car is moved to the forward end position by the drive motor 77 to complete the entry of the work roll.

Then, the change car clamps 89 and 93 are opened, the change car is backward to the home position, and the rotation exchange device is also moved to the home position by the drive motor 109, and at the same time, the work roll bearing block is fastened to the workpiece. The roll change operation is finished.

The operation for seating the withdrawn wastework roll on the wastework roll holder is as follows.

First, when the above roll replacement operation is completed, the cylinders 99 and 99-1 of the waste work roll loading stand 82 are raised to adjust the angle of the loading stand to 45 °. At this time, the cylinders of the closed work roll loading stand limit switch 116 and the limit work switch 117 of the new work roll supply stand up. After that, the rotary motor 5 of the rotary exchanger is driven in the reverse direction to rotate the rotary shaft 15, and when the limit switch 116 of the loading stand is hung during rotation, the motor 5 stops, and after closing When the cylinder 97 of the work roll take-out guide 96 is operated to form the same line as the loading stand 82 to support the lower work roll lower portion, the work roll clamp 12-1 is opened to apply the closed work roll. Settles on the dental floss.

When the closing work roll is applied, the limit is released by the down of the limit switch 116 cylinder, and the rotary motor 5 continues to rotate in the reverse direction again and stops when the limit switch 117 of the feed stand is quenched during rotation. . If the supply stand clamp 59 is opened by the cylinder 59-1 and senses any of the position sensors 62, 62-1, and 63 of the supply stand, the new work roll a1-1 is prepared. In addition, the supply cylinder 60 is forwarded to supply the new work roll a1-1 to the work roll clamp 12 by the shaft 57 connected with the supply seat 58 for the work roll clamp 12. ) Will clamp the sinwork roll.

After supply of the new work roll is completed and the supply stand limit switch 117 is turned off, the rotary motor 5 is rotated again, and when stopped by the PLG 5-1 of the rotary motor, the waste work roll is pulled out. And the new work roll supply is completed.

Referring to the operation of the new work roll loading stand, the roll is placed on the roll loading position sensor 36 of the loading stand 35, so that the roll loading position and the stacked position can be grasped and placed on the lower rail 48. In the lower part of the frame 49 to which the wheel 50 is attached, the sensor is positioned at the same position as that of the sensor 36 of the loading stand 35, and the cylinder 51 is operated through the upper and lower sensors, and the transport roll seat Through the 47, the new work roll is transferred to the roll frame 42 placed on the feed guide 44 of the new work roll supply pusher head 38, and sensed by the sensor. The feed roll roll to the feed table is pushed by the pusher head 38 through the rotation of the rotating screw 39 in which the pusher head 38 is inserted by the rotation of the motor 37 fixed on the base 40. Push it to feed up the feed station.

Through the above operation, the work rolls can be exchanged in a short time on the mail order line, and the work rolls can be automatically prepared at all times.

According to the present invention, through the automatic exchange device of the tension leveler work roll which can be exchanged on the mailing line of the strip, the manual operation of the existing two or more workers using the change car and the crane of FIG. In addition, the risk of safety disaster is eliminated, and the exchange of work rolls is eliminated, and the difficulty of online work is eliminated, which greatly improves productivity by preventing the occurrence of downtime and avoiding deceleration for a long time.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains recognize that modifications and variations can be made to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. shall.

Claims (4)

An apparatus for extracting a work roll which is rotatably mounted by a bearing block provided at the front end of a unit of a tension leveler and replacing the work roll by attaching a new work roll to the unit. A mobile truck movable toward the unit; A work roll waiting part rotatably mounted about a transverse rotation axis on the moving trolley, and having a pair of seating seats on which the new work rolls and the closed work rolls are respectively seated; A new work roll supply unit for supplying a new work roll to the first seating table of the work roll standby unit; A waste work roll receiving portion for receiving waste work rolls discharged from the second seating table of the work roll waiting portion; One end of the waste work roll exposed by separating the bearing block from the unit is pulled out of the unit to the second seat of the work roll waiting portion, and then the new work roll is seated on the first seat of the work roll waiting portion. Work roll exchange device of the tension leveler, characterized in that consisting of a work roll moving unit for entering the unit. The method of claim 1, And the work roll moving unit includes a holding means for holding one end of the work roll, and a reciprocating means for reciprocating the holding means in the transverse direction. The method of claim 2, The first seat and the second seat of the work roll waiting part are alternately arranged on the movement path of the reciprocating means as the work roll waiting part rotates about the rotation axis. Roll changer. The method of claim 3, And a clamp member for fixing the work roll seated on the seating table when the work roll waiting portion rotates about the rotation axis.

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