JP2010111921A - Catenary-type horizontal continuous steel strip processing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a catenary-type horizontal continuous steel strip processing apparatus, which includes a horizontal catenary furnace with a large capacity of catenary and a processing furnace adjacent thereto and has such a structure that a steel strip does not contact with equipment installed in the lower part of a horizontal catenary furnace and is further provided with a threading apparatus in the structure. <P>SOLUTION: In the catenary-type horizontal continuous steel strip processing apparatus 10 having the horizontal catenary furnace 13 and the processing furnace 14 adjacent to the downstream thereof, the pass line of the horizontal catenary furnace 13 is set at a position higher than the pass line of the processing furnace 14; a liftable threading roll 27 is provided in the processing furnace 14; a threading bar 20 in the processing furnace 14 is lifted to the same height position as the pass line of the horizontal catenary furnace 13 and moved backward to the horizontal catenary furnace 13 when threading the steel strip 12; and the threading bar 20 to which the steel strip 12 is connected is moved forward from the horizontal catenary furnace 13 to the processing furnace 14 and further descended to the same height position as the pass line of the processing furnace 14 and then moved forward. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a catenary horizontal steel strip continuous processing apparatus.

A horizontal catenary furnace (for example, a drying furnace for drying a steel strip immediately after the coating film is applied) and a processing furnace provided adjacent to the horizontal catenary furnace (for example, a baking furnace for baking the coating film on the steel strip); In a continuous processing of a catenary horizontal steel strip having a thread, in the operation of threading a new steel strip (threading), a threading bar is removed from the processing furnace using a threading roll installed in the processing furnace. The threading roll installed in the horizontal catenary furnace is moved until a part of the threading bar protrudes from the inlet of the horizontal catenary furnace and waits in front of the inlet of the horizontal catenary furnace. After connecting the leading end of the steel strip to the threading bar, the threading bar is It is returned to the processing furnace by moving the over furnace. The threading roll is kept at a position lower than the pass line in the horizontal catenary furnace and the processing furnace so as not to hinder the transport of the steel strip during the heat treatment of the steel strip. It is used by being raised to the vertical position (for example, see Patent Documents 1 and 2).

JP-A-8-13044 JP 2007-56334 A

In a catenary horizontal steel strip continuous processing device, if the production capacity is increased, that is, the length of the horizontal catenary furnace is increased by increasing the transport speed (line speed) of the steel strip, the hanging distance of the steel strip in the horizontal catenary furnace (catenary) The amount of steel) increases and the steel strip comes into contact with the equipment installed at the bottom of the horizontal catenary furnace. In this case, if the horizontal catenary furnace is moved downward with respect to the steel strip pass line, the steel strip can be prevented from coming into contact with the equipment installed at the bottom, but the periphery installed below the horizontal catenary furnace Depending on the arrangement of the equipment, there is a problem that the entire horizontal catenary furnace cannot be moved downward. Further, even if the entire steel strip pass line of the catenary horizontal steel strip continuous processing apparatus is moved upward, the steel strip can be prevented from coming into contact with equipment installed at the lower portion of the horizontal catenary furnace. However, due to the crane limit of the equipment installed on the downstream side of the catenary horizontal steel strip continuous treatment device, it may not be possible to move the entire steel strip pass line of the catenary horizontal steel strip continuous treatment device upward. . In addition, moving the entire steel strip pass line of the catenary horizontal steel strip continuous processing equipment as part of the increase in production capacity is accompanied by a major remodeling of the equipment, resulting in a significant increase in remodeling costs. Also occurs.

Here, in a horizontal furnace having a floater, Patent Document 1 provides a threading device in which a threading roll is kept below the floater upper surface level when threading is not performed, and at the time of threading, the threading roll moves above the floater upper surface level. It is disclosed. Further, in Patent Document 2, in the threading table before and after the horizontal furnace, when threading is not performed, the threading roll is held below the transport roll upper surface level so as not to contact the steel strip. It is disclosed to provide a threading device that moves above the level. However, in Patent Documents 1 and 2, in the horizontal catenary furnace subject to height restrictions in the vertical direction, when the pass line of the horizontal catenary furnace is set to the same level as the adjacent processing furnace,
There is no description about what to do when the steel strip comes into contact with the equipment installed in the lower part of the horizontal catenary furnace due to its catenary (hanging down).

The present invention has been made in view of such circumstances, and in a horizontal catenary furnace where the amount of catenary is large and the processing furnace is adjacent to the downstream side, the steel strip does not contact the equipment installed at the lower part of the horizontal catenary furnace. Another object of the present invention is to provide a catenary horizontal steel strip continuous processing apparatus having a threading mechanism in the configuration.

A catenary horizontal steel strip continuous processing apparatus according to the present invention that meets the above object is provided adjacent to a horizontal catenary furnace provided in a steel strip processing facility subject to height restrictions in the vertical direction and on the downstream side of the horizontal catenary furnace. In a catenary horizontal steel strip continuous processing apparatus having a processed processing furnace,
The horizontal catenary furnace pass line is set at a position higher than the process furnace pass line, and a threading roll that can be moved up and down is provided in the process furnace. When threading a steel strip, a threading bar conveyed into the process furnace is provided. The threading roll is raised and lifted up to the same height as the horizontal catenary furnace pass line and moved backward to the horizontal catenary furnace. Further, the threading roll is lowered to the same height as the pass line of the processing furnace to advance the inside of the processing furnace.

In the catenary horizontal steel strip continuous processing apparatus according to the present invention, the threading roll is inserted into the processing furnace with the axial direction of the threading roll orthogonal to the transport direction of the steel strip, and both side portions of the threading roll are , Projecting from both side walls of the processing furnace, and can be supported by lifts provided on both side walls of the processing furnace via bearings (bearing parts).
Here, the catenary horizontal steel strip continuous treatment apparatus can be a smoothing annealing apparatus for directional silicon steel sheets.

In the catenary horizontal steel strip continuous processing apparatus according to the present invention, the horizontal catenary furnace pass line is set at a position higher than the processing furnace pass line, so that the furnace height of the horizontal catenary furnace is suppressed and the equipment is made compact. It becomes possible. Moreover, if the pass line of the horizontal catenary furnace is made higher than the pass line of the processing furnace, it is possible to increase the allowable sag of the steel strip in the horizontal catenary furnace, and the length of the steel strip that can be accommodated in the horizontal catenary furnace is increased. Longer production capacity of catenary horizontal steel strip continuous processing equipment can be enhanced. When the horizontal catenary furnace pass line is set higher than the processing furnace pass line, the horizontal catenary furnace is not significantly modified, so it is easy and inexpensive to increase the production capacity of the catenary horizontal steel strip continuous processing equipment. Can be achieved.

In the catenary-type horizontal steel strip continuous processing apparatus according to the present invention, both side portions of the threading roll are protruded from both side walls of the processing furnace, and lifts provided on both side walls of the processing furnace via bearings (bearing portions) respectively. When supporting, a threading roll can be raised / lowered easily at the time of threading of a steel strip.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
Here, FIG. 1 is an explanatory view of a catenary horizontal steel strip continuous treatment apparatus according to an embodiment in smoothing annealing of the grain-oriented silicon steel sheet of the present invention, and FIG. 2 is a baking of the catenary horizontal steel strip continuous treatment apparatus. FIG. 3A is a side view of the threading roll inserted into the baking furnace of the catenary horizontal steel strip continuous processing apparatus, and FIG. 3B is a PP of (A). FIG. 4 is a front view of a threading roll inserted into the drying furnace of the catenary horizontal steel strip continuous treatment apparatus, and FIG. 5 (A) is inserted into the drying furnace of the catenary horizontal steel strip continuous treatment apparatus. The side view of the threading roll, (B) is a view taken along the line Q-Q of (A), and FIGS. 6 (A) to (D) are the catenary horizontal steel strip continuous processing apparatus according to one embodiment of the present invention. Theory of threading methods It is a diagram.

As shown in FIG. 1, a catenary horizontal steel strip continuous treatment apparatus 10 according to an embodiment in smoothing annealing of a directional silicon steel sheet according to the present invention is an example of a steel strip treatment facility that is restricted in height in the vertical direction. A drying furnace 13 for drying the steel strip 12 immediately after the coating film is applied by the coater roll 11, which is an example of a horizontal catenary furnace, provided in a continuous treatment facility for the steel strip coated with the coating film It is an example of a processing furnace provided adjacent to the downstream side of the furnace 13, and has a horizontal catenary type baking furnace 14 for baking the dried coating film on the steel strip 12. Details will be described below.

As shown in FIG. 1, the drying furnace 13 includes an inlet (not shown) through which the steel strip 12 coated with the coating film enters through the coater roll 11 and an outlet from which the steel strip 12 after the drying of the coating film is discharged. And a drying furnace discharge roll 16, 17 provided on the upstream side of the outlet portion 15 with its axial direction orthogonal to the conveying direction of the steel strip 12 and arranged at the same height position. Further, a radiation type thermometer 18 which is an example of a temperature detector for measuring the surface temperature of the steel strip 12 is attached to the ceiling part of the outlet part 15, and the temperature detection part at the tip of the radiation type thermometer 18 in the outlet part 15. A steel strip support roll 19 is provided in parallel with the drying furnace discharge rolls 16 and 17 at the same height as the drying furnace discharge rolls 16 and 17. By adopting such a configuration, the height position of the steel strip 12 discharged from the drying furnace 13 by the height position of the drying furnace discharge rolls 16 and 17 and the steel strip support roll 19, that is, the drying furnace 13 The height of the pass line can be determined, and further, the steel strip 12 can be passed in a horizontal state at a position directly below the temperature detecting portion at the tip of the radiation thermometer 18, so that the steel discharged from the drying furnace 13 The surface temperature of the band 12 can be accurately measured.

As shown in FIG. 1, the baking furnace 14 includes an inlet 22 into which the steel strip 12 discharged from the drying furnace 13 enters, an outlet 23 for discharging the steel strip 12 after the coating film has been baked, and an outlet 23. The baking furnace discharge roll 24 provided at a lower position than the drying furnace discharge rolls 16 and 17 (steel band support roll 19) with its axial direction orthogonal to the conveying direction of the steel strip 12 on the upstream side of the steel strip 12. And have. Further, a radiation type thermometer 25 which is an example of a temperature detector for measuring the surface temperature of the steel strip 12 is attached to the ceiling portion of the outlet part 23, and the temperature detection part at the tip of the radiation type thermometer 25 in the outlet part 23. A steel strip support roll 26 is provided in parallel with the baking furnace discharge roll 24 at the same height as the baking furnace discharge roll 24. With such a configuration, the height position of the steel strip 12 discharged from the baking furnace 14 depending on the height position of the baking furnace discharge roll 24 and the steel strip support roll 26, that is, the pass line of the baking furnace 14. Further, since the steel strip 12 can be passed in a horizontal state at a position directly below the temperature detecting portion at the tip of the radiation type thermometer 25, the steel strip 12 discharged from the baking furnace 14 can be passed. The surface temperature of can be measured accurately.

Furthermore, the baking furnace 14 moves downstream of the inlet 22 of the baking furnace 14 in order to move the threading bar 20 carried into the baking furnace 14 at the same height as the pass line of the baking furnace 14 during threading. A plurality of (four in this embodiment) lifting / lowering functions that are inserted side by side with the axial direction orthogonal to the conveying direction of the steel strip 12 in a region upstream of the baking furnace discharge roll 24. A threading roll 27 is provided. Here, as shown in FIGS. 2, 3 </ b> A, and 3 </ b> B, the first threading roll 27 has a plurality of pairs of openings formed to face both side walls 28 and 29 of the baking furnace 16. 30, both sides of the first threading roll 27 protrude outward from both side walls 28, 29 of the baking furnace 14, and lift parts 31 provided on both side walls 28, 29 of the baking furnace 14, respectively. , 32 are supported via bearing portions (bearing means) 33, 34.

The pair of openings 30 has a shape of a long hole extending in the vertical direction. When the first threading roll 27 is disposed on the lower side of the long hole, the threading bar 20 is placed in the baking furnace 14 in the pass line of the baking furnace 14. When the first threading roll 27 is disposed on the upper side of the long hole, the threading bar 20 is placed at the same height position as the pass line of the drying furnace 13 in the baking furnace 14. The shape of the long hole is set so that it can be lifted and held.

The elevating parts 31 and 32 are supported by attachment members 35 and 36 attached to the outer sides of the left and right side edges extending in the vertical direction of the long hole-shaped opening 30, facing the left and right sides of the opening 30, and side walls. 28 and 29, a pair of guide members 37, 38 disposed with a gap, a lifting member 42 provided so as to be movable up and down between the guide members 37, 38, and a lifting member 42 from below. A support member 45 provided so as to be able to move up and down between the guide members 37 and 38, and connected to the support member 45 via a connecting portion 46 and supported by a drive unit 47 of a lifting mechanism (for example, a ball screw jack). And an elevator 48.

And the groove | channel which becomes a pair extended in an up-down direction is formed in the surface where the guide members 37 and 38 oppose, respectively, and the width direction (direction orthogonal to the conveyance direction of the steel strip 12) of the raising / lowering member 42 respectively Side plate members 40 and 41 are provided, and projections 39 that fit into grooves formed in the guide members 37 and 38 are provided on both sides of the side plate members 40 and 41 in the longitudinal direction (the conveying direction of the steel strip 12). . Further, on both sides of the support member 45 in the longitudinal direction (conveying direction of the steel strip 12), contact portions 43, 44 are provided that contact the side plate members 40, 41 provided on the elevating member 42 from below. Further, a reinforcing member 49 is provided in the central portion of the support member 45 in parallel with the contact portions 43 and 44.

The bearing portions 33, 34 are paired support shafts 51, 52 that are attached to the side plate members 40, 41 of the elevating member 42 with the axial direction aligned with the direction orthogonal to the conveying direction of the steel strip 12 via the bearings 50. And wheels 53 and 54 which are externally mounted on the support shafts 51 and 52 and rotate integrally with the support shafts 51 and 52. Thus, both side portions of the first threading roll 27 inserted into the opening 30 can be rotatably supported on the wheels 53 and 54, and a handle fixing portion formed on one end side of the first threading roll 27. The first threading roll 27 can be rotated by turning the handle 56 attached to 55.

Further, as shown in FIG. 1, the drying furnace 13 is configured to move the threading bar 20 carried into the drying furnace 13 at the same height as the pass line of the drying furnace 13 during threading. A plurality of second threading rolls 21 having no lifting function and inserted in a region downstream of the inlet of the drying furnace and upstream of the drying furnace discharge roll 16 with the axial direction orthogonal to the conveying direction of the steel strip 12. have. Here, as shown in FIG. 4, the second threading roll 21 is inserted from one side of a plurality of pairs of openings 57 formed facing both side walls 60, 61 of the drying furnace 13, Both side portions of the threading roll 21 protrude outward from both side walls of the drying furnace 13 and are supported by bearing portions 58 and 59 provided on the both side walls, respectively.

Here, as shown in FIGS. 4, 5 </ b> A and 5 </ b> B, the bearing portions 58 and 59 are respectively provided with support bases 64 attached to both side walls 60 and 61 of the drying furnace 13 below the opening 57. The side plate members 65 and 66 are erected on both sides in the width direction of the support base 64 (the direction orthogonal to the conveying direction of the steel strip 12), and the axial direction of the side plate members 65 and 66 is matched to the direction orthogonal to the conveying direction of the steel strip 12. A pair of attached support shafts 68 and 69 and wheels 70 and 71 that are externally mounted on the support shafts 68 and 69 and rotate integrally with the support shafts 68 and 69 are provided. Here, the support base 64 is attached to the side walls 60 and 61 via attachment members 62 and 63 provided on the side walls 60 and 61, respectively. The support shafts 68 and 69 are attached to the side plate members 65 and 66 through bearings 67 provided on the side plate members 65 and 66. Reinforcing members 72, 73, and 74 are provided on both sides and the center of the side plate members 65 and 66, respectively. As a result, both side portions of the second threading roll 21 inserted into the opening 57 can be rotatably supported on the wheels 70 and 71, and a handle fixing portion formed on one end side of the second threading roll 21. The second threading roll 21 can be rotated by turning the handle 76 attached to 75.

With the above configuration, a threading mechanism can be provided in the catenary horizontal steel strip continuous processing apparatus 10, and the threading rolls 21 and 27 are inserted into the drying furnace 13 and the baking furnace 14, respectively. , The height position of the first threading roll 27 can be adjusted to the height position of the baking furnace discharge roll 24 and the steel strip support roll 26, and the second threading roll 21 and the drying furnace discharge can be adjusted. The pass line of the drying furnace 13 determined by the rolls 16 and 17 and the steel strip support roll 19 is passed through the path of the baking furnace 14 determined by the first threading roll 27, the baking furnace discharge roll 24, and the steel strip support roll 26. Can be set higher than the line.

Then, when threading the steel strip 12 into the drying furnace 13 and the baking furnace 14, the threading bar 20 transported into the baking furnace 14 and supported by the first threading roll 27 is operated by operating the elevating units 31 and 32. The first threading roll 27 can be rotated to allow the threading bar 20 to enter the drying furnace 13. Further, the threading bar 20 to which the steel strip 12 is connected can be supported by the first threading roll 27 by rotating the second threading roll 21 and entering the baking furnace 14 from the drying furnace 13. After the threading bar 20 received by operating the units 31 and 32 is lowered to the same height position as the pass line of the baking furnace 14, the first threading roll 27 is rotated and moved in the baking furnace 14 for baking. It can be discharged from the furnace 14.

Then, the method at the time of threading the steel strip 12 to the catenary type horizontal steel strip continuous processing apparatus 10 which concerns on one embodiment in the smoothing annealing of the grain-oriented silicon steel plate of this invention is demonstrated.
As shown in FIG. 6A, the second threading roll 21 is inserted into a pair of openings 57 formed in the both side walls 60 and 61 of the drying furnace 13, and the second threading roll 21 is received by the bearing portions 58 and 59. The handle 76 is attached to the handle fixing portion 75 of the second threading roll 21 so that both sides of the second threading roll 21 are rotatably supported. In addition, since the height position of the inserted second threading roll 21 is the same as the drying furnace discharge rolls 16 and 17 and the steel strip support roll 19, the second threading roll 21 is the drying furnace discharge roll 16, 17 and the steel strip support roll 19 are arranged at the height position of the pass line of the drying furnace 13. Further, a first threading roll 27 is inserted into a pair of openings 30 formed in both side walls 28 and 29 of the baking furnace 14, and both sides of the first threading roll 27 are rotatably supported by bearing portions 33 and 34. Then, the handle 56 is attached to the handle fixing portion 55 of the first threading roll 27. Then, by operating the elevating units 31 and 32, the height position of the first threading roll 27 inserted into the baking furnace 14 is determined by the baking furnace discharge roll 24 and the steel strip support roll 26. Adjust to the height position of the line.

As shown in FIG. 6B, the rear end side of the threading bar 20 is placed on the in-furnace roll 77 arranged in front of the outlet 23 of the baking furnace 14 so as to be at the same height as the steel strip support roll 26. (When the threading bar 20 is carried into the baking furnace 14, the portion disposed on the upstream side of the baking furnace 14 of the threading bar 20) is placed, and the furnace roll 77 is rotated to rotate the threading bar 20 into the baking furnace 14. When the rear end of the threading bar 20 passes through the steel strip support roll 26 and the baking furnace discharge roll 24 and is placed on the first threading roll 27, the rotation of the in-furnace roll 77 is stopped. To do. Next, the handle 56 attached to the first threading roll 27 is rotated to rotate the first threading roll 27, so that the rear end of the threading bar 20 approaches the outlet 15 of the drying furnace 13. As a result, the threading bar 20 is supported by the first threading roll 27.

As shown in FIG. 6C, the elevating parts 31 and 32 are operated to raise the bearing parts 33 and 34, and the threading bar 20 supported by the first threading roll 27 is the same as the pass line of the drying furnace 13. Lift to height. That is, the upper end position of the first threading roll 27 is aligned with the upper end positions of the drying furnace discharge rolls 16 and 17 and the steel strip support roll 19. Next, the handle 56 is turned to rotate the first threading roll 27 to allow the threading bar 20 to enter the drying furnace 13, and the rear end side of the threading bar 20 is the steel strip support roll 19 and the drying furnace discharge rolls 17, 16. The rotation of the first threading roll 27 is stopped when the first threading roll 27 is placed on the second threading roll 21 after passing through. Then, as shown in FIG. 6D, the handle 76 attached to the second threading roll 21 is rotated to rotate the second threading roll 21, so that the threading bar 20 is moved in the drying furnace 13. The rear end side is made to enter from the entrance of the drying furnace 13 until it protrudes out of the furnace.

The tip of the steel strip 12 held by the coater roll 11 disposed in front of the entrance of the drying furnace 13 is connected to the rear end of the threading bar 20 protruding from the entrance of the drying furnace 13. Then, the handle 76 attached to the second threading roll 21 is rotated to rotate the second threading roll 21 and move the threading bar 20 to the outlet portion 15 side. When the leading end of the threading bar 20 passes through the drying furnace discharge rolls 16 and 17 and the steel strip support roll 19 and enters the baking furnace 14, the first threading roll 27 in the baking furnace 14 is a steel strip support roll. 19 is arranged at the same height as 19, the leading end side of the threading bar 20 is placed on the first threading roll 27. Therefore, when the leading end of the threading bar 20 is placed on the first threading roll 27, the rotation of the second threading roll 21 is stopped and the handle 56 attached to the first threading roll 27 is turned. Then, the first threading roll 27 is rotated so that the rear end of the threading bar 20 enters the baking furnace 14 from the drying furnace 13.

As a result, the threading bar 20 is supported by the first threading roll 27, the lifting parts 31, 32 are operated to lower the bearing parts 33, 34, and the threading supported by the first threading roll 27 is performed. The bar 20 is lowered to the same height as the pass line of the baking furnace 14. Next, the handle 56 is rotated to rotate the first threading roll 27 and move the threading bar 20 toward the outlet 23 side of the baking furnace 14, and the leading end side of the threading bar 20 supports the baking roll discharge roll 24 and the steel strip support. The rotation of the first threading roll 27 is stopped when it passes through the roll 26 and is placed on the furnace roll 77. Then, the furnace roll 77 is rotated, and the furnace roll 77 is stopped when the rear end of the threading bar 20 passes through the furnace roll 77.

As a result, in the drying furnace 13, the steel strip 12 is supported by the second threading roll 21, the drying furnace discharge rolls 16 and 17, and the steel strip support roll 19 and is disposed on the pass line of the drying furnace 13. In the baking furnace 14, the baking is supported by the first threading roll 27, the baking furnace discharge roll 24, and the steel strip support roll 26, and is disposed on the pass line of the baking furnace 14. And the steel strip 12 is dried by the coater roll 11 provided in front of the inlet of the drying furnace 13 and the outlet 15 side of the drying furnace 13 by removing the second threading roll 21 from the drying furnace 13. It is supported by the furnace discharge roll 16 and hangs down in the drying furnace 13. Further, by pulling out the first threading roll 27 from the baking furnace 14, the steel strip 12 is provided on the outlet side 23 side of the steel strip support roll 19 provided in the outlet portion 15 of the drying furnace 13 and the baking furnace 14. Is supported by the discharge roll 24 for the baking furnace provided in the above and hangs down in the baking furnace 14, and threading is completed.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
For example, in this embodiment, two drying furnace discharge rolls are provided on the outlet side of the drying furnace, but the number of drying furnace discharge rolls may be one. In addition, all four threading rolls installed in the baking furnace can be raised and lowered by the lifting part, but the number of threading bars that can be raised and lowered according to the length of the threading bar shall be 5 or more or 3 or less. Can do.
Further, the coating film coating apparatus is not limited to the coater roll that simultaneously forms the coating film on the front and back surfaces of the steel strip, and is also effective for a coating apparatus that forms the coating films on the front and back surfaces of the steel strip separately.

It is explanatory drawing of the catenary type horizontal steel strip continuous processing apparatus which concerns on one Embodiment in the smoothening annealing of the directional silicon steel plate of this invention. It is a front view of the threading roll inserted in the processing furnace of the catenary type horizontal steel strip continuous processing apparatus. (A) is a side view of the threading roll inserted into the processing furnace of the catenary horizontal steel strip continuous processing apparatus, and (B) is a view taken along the line PP in (A). It is a front view of the threading roll inserted in the horizontal catenary furnace of the catenary type horizontal steel strip continuous processing apparatus. (A) is a side view of a threading roll inserted into the horizontal catenary furnace of the same catenary horizontal steel strip continuous processing apparatus, and (B) is a view taken along the line QQ of (A). (A)-(D) are explanatory drawings which show the threading method in the catenary type horizontal steel strip continuous processing apparatus which concerns on one embodiment of this invention.

Explanation of symbols

10: Catenary type horizontal steel strip continuous treatment device, 11: coater roll, 12: steel strip, 13: drying furnace, 14: baking furnace, 15: outlet, 16, 17: discharge roll for drying furnace, 18: radial type Thermometer, 19: Steel strip support roll, 20: Threading bar, 21: Second threading roll, 22: Inlet, 23: Outlet, 24: Baking furnace discharge roll, 25: Radiation type thermometer, 26: Steel strip support roll, 27: first threading roll, 28, 29: side wall, 30: opening, 31, 32: lifting part, 33, 34: bearing part, 35, 36: mounting member, 37, 38: guide Member, 39: protrusion, 40, 41: side plate member, 42: elevating member, 43, 44: contact material, 45: support member, 46: connecting portion, 47: drive unit, 48: elevating platform, 49: reinforcement Member, 50: bearing, 1, 52: Support shaft, 53, 54: Wheel, 55: Handle fixing portion, 56: Handle, 57: Opening, 58, 59: Bearing portion, 60, 61: Side wall, 62, 63: Mounting member, 64: Support Base, 65, 66: Side plate member, 67: Bearing, 68, 69: Support shaft, 70, 71: Wheel, 72, 73, 74: Reinforcement member, 75: Handle fixing part, 76: Handle, 77: Roll in furnace

Claims (3)

In a catenary-type horizontal steel strip continuous processing apparatus having a horizontal catenary furnace provided in a steel strip processing facility subject to height restrictions in the vertical direction and a processing furnace provided adjacent to the downstream side of the horizontal catenary furnace,
The horizontal catenary furnace pass line is set at a position higher than the process furnace pass line, and a threading roll that can be moved up and down is provided in the process furnace. When threading a steel strip, a threading bar conveyed into the process furnace is provided. The threading roll is raised and lifted up to the same height as the horizontal catenary furnace pass line and moved backward to the horizontal catenary furnace. And further moving the threading roll down to the same height as the pass line of the processing furnace to advance the inside of the processing furnace. The catenary horizontal steel strip continuous processing apparatus according to claim 1, wherein the threading roll is inserted into the processing furnace with the axial direction of the threading roll orthogonal to the transport direction of the steel strip, and both sides of the threading roll. Is a catenary horizontal steel strip continuous processing apparatus which protrudes from both side walls of the processing furnace and is supported by a lifting part provided on each side wall of the processing furnace via bearings. The catenary horizontal steel strip continuous processing apparatus according to any one of claims 1 and 2, wherein the catenary horizontal steel strip continuous processing apparatus is a smoothing annealing apparatus for directional silicon steel sheets. Type horizontal steel strip continuous processing equipment.

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