CN111360088A

CN111360088A - Tension roll threading device, arc grid and temper mill

Info

Publication number: CN111360088A
Application number: CN202010316085.XA
Authority: CN
Inventors: 米楠
Original assignee: MCC Capital Engineering and Research Incorporation Ltd; CERI Technology Co Ltd
Current assignee: MCC Capital Engineering and Research Incorporation Ltd; CERI Technology Co Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-07-03

Abstract

The invention provides a tension roller threading device, an arc grid and a temper mill, wherein the tension roller threading device comprises: the strip steel passes through the feeding tension roller and the discharging tension roller in sequence; a feeding compression roller matched with the feeding tension roller; the discharging compression roller is matched with the discharging tension roller; the at least two arc-shaped grids comprise a feeding arc-shaped grid matched with the roller surface of the feeding tension roller and a discharging arc-shaped grid matched with the roller surface of the discharging tension roller, the feeding arc-shaped grid is used for guiding the strip steel to move along the feeding tension roller, and the discharging arc-shaped grid is used for guiding the strip steel to move along the discharging tension roller; a plurality of first air outlets are formed in the inner side of the arc-shaped grid, air flow of the first air outlets on the feeding arc-shaped grid blows towards the roller surface of the feeding tension roller, and air flow of the first air outlets on the discharging arc-shaped grid blows towards the roller surface of the discharging tension roller. The invention relieves the technical problem that the threading of the thin strip steel is difficult.

Description

Tension roll threading device, arc grid and temper mill

Technical Field

The invention relates to the technical field of cold rolling production of strip steel, in particular to a tension roller threading device, an arc-shaped grid and a temper mill.

Background

CN201164862Y discloses a tension roller structure, through install grid formula arc baffle outside the tension roller, improves the guidance quality to belted steel, is favorable to belted steel to smoothly get into the tension tube structure, alleviates the threading problem.

CN203292190U discloses an automatic threading device of a tension roller, wherein an upper arc-shaped guide rail is arranged outside the upper tension roller, and a lower arc-shaped guide rail is arranged outside the lower tension roller; an air jet is arranged between the upper tension roller and the lower tension roller, the air jet direction of the air jet is positioned on the tangent line of the upper vertex of the lower tension roller, and the air jet of the air jet generates an air cushion under the strip steel, so that the air cushion is separated from the lower tension roller, further enters the upper arc-shaped guide rail and moves around the upper tension roller.

The tension roller structures disclosed in CN201164862Y and CN203292190U are mainly applied to threading of thin strip steel, and have a good effect on the strip steel with the thickness of about 1 mm.

However, in actual production, the steel plate moves in an S shape from bottom to top for a vertical tension roller, particularly a tension roller which is fed from bottom to top at the inlet of a unit. When the thickness of the plate is 0.6-0.8 mm, the threading resistance is large, and one-time automatic threading is difficult to realize under the condition of no manual intervention. When the thickness of the plate is less than 0.6mm, the plate belt is very easy to block or wrinkle in a gap between the tension roller and the arc-shaped guide plate, and automatic threading is difficult to realize. Continuous strip delivery can cause severe wrinkles and build-up, difficult on-line manual cleaning, and time and labor consuming. Sometimes, the steel plates piled up with folds can be removed only by pulling the tension roller out of the frame and disassembling the arc-shaped guide plate devices, which causes great waste.

Disclosure of Invention

The invention aims to provide a tension roller threading device, an arc-shaped grid and a temper mill, so as to solve the technical problem that the threading of thin strip steel in the prior art is difficult.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a tension roller threading device, comprising:

the strip steel passes through the feeding tension roller and the discharging tension roller in sequence;

the feeding compression roller is matched with the feeding tension roller;

the discharging compression roller is matched with the discharging tension roller;

the feeding arc grids are used for guiding strip steel to move along the feeding tension roller, and the discharging arc grids are used for guiding the strip steel to move along the discharging tension roller;

the inboard of arc grid is equipped with a plurality of first ventholes, on the pan feeding arc grid the air current of first venthole blows to the roll surface of pan feeding tension roller, on the ejection of compact arc grid the air current of first venthole blows to the roll surface of ejection of compact tension roller.

In a preferred embodiment, the arc-shaped grid comprises a frame body and a plurality of arc-shaped guide pipes fixed on the frame body, and the arc-shaped guide pipes are provided with a plurality of first air outlet holes; in the feeding arc grid, the arc guide pipes extend around the axis of the feeding tension roller, and a plurality of arc guide pipes are distributed at intervals along the axis of the feeding tension roller; in the discharging arc-shaped grid, the arc-shaped guide pipes extend around the axis of the discharging tension roller, and the arc-shaped guide pipes are distributed at intervals along the axis of the discharging tension roller.

In a preferred embodiment, the arcuate conduit is a round tube.

In a preferred embodiment, the arc-shaped guide tube has an inner reference line, which coincides with an inner contour line of the arc-shaped guide tube in a projection perpendicular to the axis of the feeding tension roller; the first outlet hole is offset from the inner reference line.

In a preferred embodiment, the first air outlets on the arc-shaped duct are alternately distributed on both sides of the inner reference line.

In a preferred embodiment, in the feeding arc-shaped grid, on a projection perpendicular to the axis of the feeding tension roller, the radial distance between each point on the inner contour line of the arc-shaped conduit and the axis of the feeding tension roller is gradually reduced from the feeding end of the feeding arc-shaped grid to the discharging end of the feeding arc-shaped grid; in the discharging arc-shaped grid, on a projection perpendicular to the axis of the discharging tension roller, the radial distance between each point on the inner contour line of the arc-shaped guide pipe and the axis of the discharging tension roller is gradually reduced from the feeding end of the discharging arc-shaped grid to the discharging end of the discharging arc-shaped grid.

In a preferred embodiment, the arcuate grid has a reference axis parallel to the axis of the feed tension roller, the arcuate conduit extending in a circumferential direction about the reference axis; in the feeding arc-shaped grid, the reference axis is positioned on one side of the axis of the feeding tension roller, which is far away from the discharging tension roller; in the discharging arc-shaped grid, the reference axis is positioned on one side, close to the feeding tension roller, of the axis of the discharging tension roller.

In a preferred embodiment, the feeding end of the arc-shaped grid is provided with a shovel head for guiding the strip steel.

In a preferred embodiment, the shovel head is provided with a second air outlet, and the air flow of the second air outlet blows towards the strip steel along the tangential direction.

In a preferred embodiment, the second air outlet hole has an air outlet end portion disposed on the front end surface of the shovel head and an air outlet side portion disposed on the inner side surface of the shovel head, the air flow at the air outlet end portion blows towards the strip steel along the tangential direction, and the air flow at the air outlet side portion blows towards the roll surface along the radial direction.

In a preferred embodiment, the frame body includes a support tube extending along an axis of the feeding tension roller, the arc-shaped duct is mounted to the support tube, and each of the first air outlet holes communicates with the support tube, and the support tube is capable of delivering an air flow to the first air outlet hole.

In a preferred embodiment, an outlet guide plate is arranged at the discharging end of the discharging arc-shaped grid, the outlet guide plate is provided with an inner guide surface and an outer bearing surface, the inner guide surface is used for guiding the strip steel between the discharging arc-shaped grid and the discharging tension roller to be discharged outwards, and the outer bearing surface can guide the strip steel to move towards a roller gap between the discharging tension roller and the discharging compression roller.

In a preferred embodiment, the feeding compression roller, the feeding tension roller, the discharging tension roller and the discharging compression roller are sequentially arranged along a direction from bottom to top; or the feeding compression roller, the feeding tension roller, the discharging tension roller and the discharging compression roller are sequentially arranged along the direction from top to bottom.

The invention provides an arc-shaped grid, which can be matched with the roller surface of a tension roller, the arc-shaped grid is used for guiding strip steel to move along the tension roller, a plurality of first air outlet holes are formed in the inner side of the arc-shaped grid, and air flow of the first air outlet holes blows to the roller surface of the tension roller.

In a preferred embodiment, the arc-shaped grid comprises a frame body and a plurality of arc-shaped guide pipes fixed on the frame body, and the arc-shaped guide pipes are provided with a plurality of first air outlet holes; the arc-shaped grid has a reference axis about which the arc-shaped conduits extend, a plurality of the arc-shaped conduits being spaced apart along the reference axis; the arc-shaped guide pipe is provided with an inner reference line, and the inner reference line is superposed with the inner contour line of the arc-shaped guide pipe on a projection perpendicular to the reference axis; the first outlet hole is offset from the inner reference line.

In a preferred embodiment, the frame body comprises a first side frame, a second side frame and a support pipe extending along the axis of the tension roller, the first side frame and the second side frame are positioned at two ends of the frame body, and the support pipe is arranged between the first side frame and the second side frame; the arc-shaped guide pipe is arranged on the support pipe, each first air outlet is communicated with the support pipe, and the support pipe can convey air flow to the first air outlet; the first side frame and the second side frame can be respectively installed on the bearing seats at the two ends of the tension roller.

In a preferred embodiment, a shovel head for guiding the strip steel is arranged at the feeding end of the arc-shaped grid, a second air outlet is arranged on the shovel head, and air flow of the second air outlet blows towards the strip steel along the tangential direction of the tension roller.

The invention provides a temper mill, comprising:

a leveling device;

the tension roller threading device is arranged at a feeding port of the leveling device;

the tension roller threading device is arranged at the discharge hole of the leveling device.

The invention has the characteristics and advantages that:

the strip head of the strip steel enters the feeding arc-shaped grid through a roller gap between the feeding compression roller and the feeding tension roller, the strip steel is pressed on the surface of the feeding tension roller by air flow of the first air outlet holes on the feeding arc-shaped grid, the degree of freedom of the strip steel is restricted, the strip steel is wound on the feeding tension roller, and the strip steel is driven to move forwards by using the friction force between the strip steel and the feeding tension roller. In the process, the strip head of the strip steel moves along the roller surface of the feeding tension roller, so that the scratch with the feeding arc-shaped grid can be reduced, the resistance is reduced, meanwhile, the contact between the strip steel and the roller surface is increased, the friction is utilized to provide driving force, the strip steel is further reduced to be blocked or folded, and the strip head of the strip steel can move smoothly.

The strip head of the strip steel enters the discharging arc-shaped grid, the strip steel is pressed on the surface of the discharging tension roller by the airflow of the first air outlet hole on the discharging arc-shaped grid, the degree of freedom of the strip steel is restrained, the strip steel is wound on the discharging tension roller, and the strip steel is driven to move forwards by the friction force between the strip steel and the discharging tension roller; then, the strip steel penetrates out through a roll gap between the discharging press roll and the discharging tension roll. In the process, the strip head of the strip steel moves along the roller surface of the discharging tension roller, so that the scratch with the discharging arc-shaped grid can be reduced, the resistance is reduced, meanwhile, the contact between the strip steel and the roller surface is increased, the friction is utilized to provide driving force, the strip steel is further reduced to be blocked or folded, and the strip head of the strip steel can move smoothly.

Therefore, the strip steel can smoothly pass in from the feeding tension roller and pass out from the discharging tension roller in the tension roller threading device, and the threading problem of the strip steel with a thinner specification is well relieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1a is a schematic structural diagram of a first embodiment of a tension roller threading device provided by the invention;

FIG. 1b is an isometric view from a first perspective of the tension roller threading device shown in FIG. 1a (the discharge pressure roller and the feed pressure roller are omitted);

FIG. 1c is an isometric view of the tension roller threading device shown in FIG. 1a from a second perspective;

FIG. 1d is a schematic view in the direction C of FIG. 1C;

FIG. 2 is a schematic structural view of a second embodiment of a tension roller threading device provided by the invention;

FIG. 3a is a schematic structural diagram of a discharging arc-shaped grid in the tension roller threading device shown in FIG. 1 a;

FIG. 3b is a cross-sectional view taken along line A-A of FIG. 3 a;

FIG. 4a is a schematic structural diagram of a feeding arc grid in the tension roller threading device shown in FIG. 1 a;

FIG. 4B is a cross-sectional view taken along line B-B of FIG. 4 a;

FIG. 4c is an enlarged view of a portion of FIG. 4b at E;

FIG. 5a is a left side view of FIG. 4 a;

FIG. 5b is an enlarged view of a portion of FIG. 5a at D;

fig. 6 is a schematic structural view of the leveler provided in the present invention.

The reference numbers illustrate:

1. a discharging press roller; 2. a discharging tension roller; 3. feeding a tension roller; 4. feeding a compression roller; 21. a bearing seat;

5A, arc-shaped grids; 5. discharging the arc-shaped grids; 6. feeding an arc grid;

50A, a frame body; 51A, a first side frame; 52A, a second side frame; 53A, a shovel head;

541. an outlet guide plate; 542. an outlet seal plate; 543. an inner guide surface; 544. an outer bearing surface;

55A, an arc-shaped conduit; 551. an inner reference line; 552. an inner contour;

56A, branch pipes; 57A, supporting a pipe; 58A, a transverse supporting rod;

7. a quick-change connector; 8. a seal ring;

91. a first air outlet hole; 92. a second air outlet; 921. an air outlet end part; 922. an air outlet side part;

90. leveling device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The tension roller structure disclosed in CN201164862Y and CN203292190U mainly compresses and guides the local part of the strip head by a mechanical method or an air flow, so as to assist the strip steel to pass through the strip and enter the vertical tension roller. In general, the threading problem is more serious for the tension roller which is arranged at the inlet of the unit and feeds from bottom to top; therefore, the inventors have analyzed a tension roller of this structural form:

the automatic threading thought of the original design is that the lower tension roller and the lower compression roller are used as power to pull strip steel into the tension roller, then the steel plate is forced to do S-shaped motion by means of a long and narrow gap formed by the arc-shaped guide plate and the tension roller, and after the strip steel completes the S-shaped motion, the upper compression roller and the upper tension roller are matched to pull the steel plate out of the rack. However, in practical production, for thin gauge strip steel which enters the S-bend after being separated from the control of the compression roller and the tension roller, the strip head is far away from the power source, the strip head is in a free and unconstrained movement state, and because the rigidity of the thin gauge strip steel is poor, the movement is uncertain under a larger gap formed by the tension roller and the arc-shaped guide plate, and under the condition of no external force action, stable power is difficult to obtain from the rotating tension roller. Meanwhile, once the thin gauge strip steel advances according to a curve, the instability condition is more likely to occur, waves or wrinkles are likely to occur between the roller surface of the tension roller and the arc-shaped guide plate, and once the upper part is blocked and the lower part is continuously delivered, the steel plates are piled up to cause the blocking of strip threading.

In order to relieve the technical problem of difficult threading of the thin-gauge strip steel, the inventor provides a tension roller threading device, an arc-shaped grid and a temper mill.

Example one

The invention provides a tension roller threading device, as shown in figures 1 a-2, comprising: the device comprises a feeding tension roller 3, a discharging tension roller 2, a feeding compression roller 4, a discharging compression roller 1 and at least two arc-shaped grids 5A; strip steel sequentially passes through a feeding tension roller 3 and a discharging tension roller 2; the feeding compression roller 4 is matched with the feeding tension roller 3, and the discharging compression roller 1 is matched with the discharging tension roller 2; the at least two arc grids 5A comprise a feeding arc grid 6 matched with the roller surface of the feeding tension roller 3 and a discharging arc grid 5 matched with the roller surface of the discharging tension roller 2, the feeding arc grid 6 is used for guiding the strip steel to move along the feeding tension roller 3, and the discharging arc grid 5 is used for guiding the strip steel to move along the discharging tension roller 2; as shown in fig. 3a and fig. 4a, a plurality of first air outlets 91 are provided on the inner side of the arc-shaped grid 5A, the air flow of the first air outlets 91 on the feeding arc-shaped grid 6 is blown to the roller surface of the feeding tension roller 3, and the air flow of the first air outlets 91 on the discharging arc-shaped grid 5 is blown to the roller surface of the discharging tension roller 2.

The strip head of the strip steel enters the feeding arc-shaped grid 6 through a roll gap between the feeding compression roller 4 and the feeding tension roller 3, the strip steel is pressed on the surface of the feeding tension roller 3 by the airflow of the first air outlet 91 on the feeding arc-shaped grid 6, the degree of freedom of the strip steel is restricted, the strip steel is wound on the feeding tension roller 3, and the strip steel is driven to move forwards by the friction force between the strip steel and the feeding tension roller 3. In the process, the strip head of the strip steel moves along the roller surface of the feeding tension roller 3, so that the scratch with the feeding arc-shaped grid 6 can be reduced, the resistance is reduced, meanwhile, the contact between the strip steel and the roller surface is increased, the friction is utilized to provide driving force, the strip steel is further reduced to be blocked or folded, and the strip head of the strip steel can smoothly move.

The strip head of the strip steel enters the discharging arc-shaped grid 5, the strip steel is pressed on the surface of the discharging tension roller 2 by the airflow of the first air outlet 91 on the discharging arc-shaped grid 5, the degree of freedom of the strip steel is restrained, the strip steel is wound on the discharging tension roller 2, and the strip steel is driven to move forwards by the friction force between the strip steel and the discharging tension roller 2; then, the strip steel penetrates out through a roll gap between the discharging press roll 1 and the discharging tension roll 2. In the process, the strip head of the strip steel moves along the roller surface of the discharging tension roller 2, so that the scratch with the discharging arc-shaped grid 5 can be reduced, the resistance is reduced, meanwhile, the contact between the strip steel and the roller surface is increased, the friction is utilized to provide driving force, the strip steel is further reduced to be blocked or folded, and the strip head of the strip steel can move smoothly.

Therefore, the strip steel can smoothly pass in from the feeding tension roller 3 and pass out from the discharging tension roller 2 in the tension roller threading device, and the threading problem of the strip steel with thinner specification is well relieved. The strip steel with the thickness of 0.6 mm-0.8 mm and less than 0.6mm can be smoothly threaded.

The tension roller threading device can adopt the structural form as shown in figure 1a, a feeding compression roller 4, a feeding tension roller 3, a discharging tension roller 2 and a discharging compression roller 1 are sequentially arranged along the direction from bottom to top, and strip steel is fed from bottom to top. The tension roller threading device can also adopt a structural form as shown in fig. 2, a feeding compression roller 4, a feeding tension roller 3, a discharging tension roller 2 and a discharging compression roller 1 are sequentially arranged along the direction from top to bottom, and strip steel is fed from top to bottom. In general, when strip steel is fed from bottom to top, the strip steel is difficult to penetrate due to the influence of the self weight of the strip steel; aiming at the condition that the strip steel is fed from bottom to top, the tension roller threading device well relieves the threading problem. Preferably, the roller surface of the feeding tension roller 3 and the roller surface of the discharging tension roller 2 adopt roughened surfaces, so that the roller surfaces have larger friction coefficients.

As shown in fig. 1a and fig. 2, the arc-shaped grid 5A is integrally arc-shaped cylindrical, an arc-shaped gap for moving strip steel is formed between the feeding arc-shaped grid 6 and the feeding tension roller 3, and an arc-shaped gap for moving strip steel is formed between the discharging arc-shaped grid 5 and the discharging tension roller 2.

In one embodiment of the present invention, as shown in fig. 3a to 4b, the arc-shaped grid 5A includes a frame 50A and a plurality of arc-shaped ducts 55A fixed to the frame 50A, the arc-shaped ducts 55A are provided with a plurality of first outlet holes 91; as shown in fig. 1a and 4a, in the feeding arc-shaped grid 6, an arc-shaped conduit 55A extends around the axis of the feeding tension roller 3, and a plurality of arc-shaped conduits 55A are distributed at intervals along the axis of the feeding tension roller 3; as shown in fig. 1a and 3a, in the discharge arc grid 5, an arc duct 55A extends around the axis of the discharge tension roller 2, and a plurality of arc ducts 55A are spaced along the axis of the discharge tension roller 2. As shown in fig. 4a and 4b, in the feeding arc-shaped grid 6, a plurality of first air outlets 91 are distributed on the inner side of the feeding arc-shaped grid, and the generated air flow can push the strip steel to press against the roller surface of the feeding tension roller 3, so that the friction force between the strip steel and the feeding tension roller 3 is increased, and the strip steel is favorably driven to move forwards. As shown in fig. 3a and 3b, in the discharging arc-shaped grid 5, a plurality of first air outlets 91 are distributed on the inner side of the discharging arc-shaped grid, so that the generated air flow can push the strip steel to press against the roller surface of the discharging tension roller 2, the friction force between the strip steel and the discharging tension roller 2 is increased, and the strip steel is favorably driven to move forwards.

Further, the first air outlet 91 on the feeding arc-shaped grid 6 is arranged along the radial direction of the feeding tension roller 3, and the first air outlet 91 on the discharging arc-shaped grid 5 is arranged along the radial direction of the discharging tension roller 2, so that the strip steel is pushed to move towards the roller surface. The first air outlet 91 may be a circular hole.

In the feeding arc grid 6, the arc conduit 55A extends around the axis of the feeding tension roller 3, that is, the arc conduit 55A surrounds the axis of the feeding tension roller 3. Specifically, the arc conduit 55A may extend along a curve or a broken line around the axis of the feeding tension roller 3, and the curve may be an arc, a parabola or a spiral segment around the axis of the feeding tension roller 3. Preferably, the arc conduit 55A is in the shape of an arc line, the axis of the feeding tension roller 3 is located in the arc line, and the axis of the feeding tension roller 3 may coincide with the axis of the arc line or deviate from the axis of the arc line. Further, in a projection perpendicular to the axis of the feed tension roller 3, the respective arc-shaped conduits 55A coincide.

In the discharge arc grid 5, the arc duct 55A extends around the axis of the discharge tension roller 2, i.e. the arc duct 55A surrounds the axis of the discharge tension roller 2. Specifically, the arc duct 55A may extend along a curve or a broken line around the axis of the discharging tension roller 2, and the curve may be an arc line, a parabola line, or a spiral line segment around the axis of the discharging tension roller 2. Preferably, the arc-shaped duct 55A is in the shape of a circular arc; the axis of the discharging tension roller 2 is positioned in the arc line, and the axis of the discharging tension roller 2 can be superposed with the axis of the arc line or deviate from the axis of the arc line. Further, in a projection perpendicular to the axis of the outfeed tension roller 2, the respective arc-shaped ducts 55A coincide, and the arc-shaped grid 5A has a cylindrical reference surface, along which the respective arc-shaped ducts 55A extend outside the cylindrical reference surface.

In one embodiment of the present invention, the arcuate conduit 55A is a circular tube. When the strip steel moves in the arc-shaped grids 5A, the strip head is in a suspended state and has irregular conditions, and the strip head can collide with the arc-shaped guide pipe 55A under some conditions. Specifically, the arc-shaped guide tube 55A may be formed by cold-roll welding hollow steel tubes.

The circular tube is provided with a hole site, a pit structure is formed at the hole site, and when the strip steel moves along the circular tube and moves to the hole site, the hole site is of the pit structure, so that the height is low, and retardation is easy to occur. To this end, the inventors further modified the structure of the arc duct 55A: in the case where the axis of the inlet tension roller 3 is parallel to the axis of the outlet tension roller 2, as shown in fig. 3b, 4b, 5A and 5b, the arcuate duct 55A has an inner reference line 551, the inner reference line 551 coinciding with the inner contour line 552 of the arcuate duct 55A in a projection perpendicular to the axis of the inlet tension roller 3; the first exit hole 91 is offset from the inner reference line 551. When the arc duct 55A is in the shape of an arc line, the inner reference line 551 is an arc line; in the case where the arcuate conduit 55A is parabolic, the inner reference line 551 is parabolic; when the arc-shaped duct 55A has a spiral shape, the inner reference line 551 has a spiral line.

The arc-shaped guide pipe 55A is a circular pipe, when the strip steel contacts the arc-shaped guide pipe 55A, the contact position of the strip steel and the arc-shaped guide pipe 55A is located on the inner reference line 551, and the first air outlet hole 91 deviates from the inner reference line, so that a pit structure can be prevented from being formed at the inner reference line 551, the block of the strip head of the strip steel during the movement along the arc-shaped guide pipe 55A is reduced, and the smooth movement of the strip steel in the arc-shaped grid 5A is facilitated.

Further, as shown in fig. 5A and 5b, the respective first outlet holes 91 of the arc duct 55A are alternately arranged on both sides of the inner reference line 551. Thus, firstly, the weakening effect of the apertures on the strength of the arc duct 55A can be reduced; secondly, the air flow of the first air outlet holes 91 which are alternately distributed can better cover the strip steel, and the action surfaces of the air flow are mutually overlapped, thereby being beneficial to providing continuous pressure for the strip steel and leading the strip steel to run stably.

As shown in fig. 1a, in the feeding arc grid 6, on the projection perpendicular to the axis of the feeding tension roller 3, the radial distance between each point on the inner contour line of the arc conduit 55A and the axis of the feeding tension roller 3 gradually decreases from the feeding end of the feeding arc grid 6 to the discharging end of the feeding arc grid 6; in the discharging arc-shaped grid 5, on the projection perpendicular to the axis of the discharging tension roller 2, the radial distance between each point on the inner contour line of the arc-shaped guide pipe 55A and the axis of the discharging tension roller 2 is gradually reduced from the feeding end of the discharging arc-shaped grid 5 to the discharging end of the discharging arc-shaped grid 5. Therefore, the opening between the feeding end of the arc-shaped grid 5A and the roller surface can be larger, and strip steel can conveniently enter; as shown in fig. 3 a-4 b, the air inlet of the arc duct 55A is close to the feeding end of the arc grid 5A, the air flow flows from the feeding end to the discharging end in the arc duct 55A, the air flow strength is attenuated, that is, the air flow strength of each first air outlet on the arc duct 55A is gradually reduced from the feeding end to the discharging end, and the distance from the feeding end to the discharging end is gradually reduced, so that the attenuation of the air flow moving to the strip steel surface can be gradually reduced, and the attenuation is complemented with the attenuation of the air flow strength, so that the thrust of the air flow on the strip steel is kept uniform from the feeding end of the arc grid 5A to each position of the discharging end of the arc grid 5A, and the strip steel is favorably pressed against the roller surface.

In the case where the distance between the arc duct 55A and the roll surface satisfies the above-described variation characteristics, the arc duct 55A may extend along a curve or a broken line, and the curve may be in the form of an arc, a parabola, or a spiral segment.

As shown in fig. 4b, the arc-shaped grid 5A has a reference axis parallel to the axis of the feeding tension roller 3, the arc-shaped duct 55A extends in the circumferential direction around the reference axis, i.e., the arc-shaped duct 55A extends along a circular arc line, the inner contour line 552 of the arc-shaped duct 55A is a circular arc line, and the reference axis passes through the center of the circular arc line and is the axis of the circular arc line. As shown in fig. 1a, in the feeding arc-shaped grid 6, the reference axis is positioned on one side of the axis of the feeding tension roller 3, which is far away from the discharging tension roller 2; in the discharging arc-shaped grid 5, the reference axis is positioned on one side of the axis of the discharging tension roller 2 close to the feeding tension roller 3. Taking a case that the feeding compression roller 4, the feeding tension roller 3, the discharging tension roller 2 and the discharging compression roller 1 are sequentially arranged along a direction from bottom to top as an example, as shown in fig. 1a, in the feeding arc-shaped grid 6, a reference axis is positioned below an axis of the feeding tension roller 3, and radial distances between points on an inner contour line of the arc-shaped conduit 55A and the axis of the feeding tension roller 3 are gradually reduced from bottom to top; in the discharging arc-shaped grid 5, the reference axis is positioned below the axis of the discharging tension roller 2, and the radial distance between each point on the inner contour line of the arc-shaped guide pipe 55A and the axis of the discharging tension roller 2 is gradually reduced from bottom to top.

In one embodiment of the present invention, the feeding end of the arc-shaped grid 5A is provided with a shovel head 53A, and the shovel head 53A has an inner side surface for guiding the strip head so as to guide the strip into a channel formed by a gap between the arc-shaped grid 5A and the roll surface.

Furthermore, a second air outlet 92 is arranged on the shovel head 53A, air flow of the second air outlet 92 blows towards the strip steel along the tangential direction, the air flow plays a role in lifting the strip steel head, and the lifted strip steel can enter the arc-shaped grid 5A more smoothly. As shown in fig. 1a, the strip moves from bottom to top, the strip head first contacts the shovel head 53A, and enters the feeding arc grid 6 under the action of the shovel head 53A and the air flow; after the belt head penetrates out of the feeding tension roller 3, the belt head tends to move downwards under the action of gravity, and the belt head is lifted by the airflow of the shovel head 53A and enters the discharging arc-shaped grid 5. The design of the ventilating shovel head 53A and the shovel head 53A is provided with the second air outlet 92, the air flow and the guide of the shovel head 53A are matched together to guide the belt head, the formed air gap is more beneficial to the lifting of the belt head, and the strip steel can pass more smoothly. Specifically, the shovel head 53A is welded at the feeding end of the arc-shaped conduit 55A, and a second air outlet 92 drilled on the shovel head 53A is communicated with the arc-shaped conduit 55A. In order to make the air flow of the second air outlet holes 92 blow toward the strip in a tangential direction, the axis of the second air outlet holes 92 may be parallel or nearly parallel to the tangential direction of the tension roller.

Further, as shown in fig. 4c, the second outlet hole 92 has an outlet end 921 provided on the front end surface of the shovel head 53A and an outlet side 922 provided on the inner side surface of the shovel head 53A, the air flow at the outlet end 921 is blown tangentially to the strip steel, and the air flow at the outlet side 922 is blown radially to the roll surface. When the belt head moves towards the shovel head 53A, the tangential airflow can lift the belt head to lift the belt head; when the belt head is close to the shovel head, the radial airflow can better push the belt head to ascend and be close to the roller surface, and the belt head can smoothly enter a channel between the roller surface and the arc-shaped grid 5A.

As shown in fig. 3a to 4b, the frame 50A includes a support pipe 57A extending along the axis of the charging tension roller 3, the arc-shaped duct 55A is mounted to the support pipe 57A, and the respective first outlet holes 91 communicate with the support pipe 57A, the support pipe 57A being capable of delivering the gas flow to the first outlet holes 91. Specifically, the arc duct 55A communicates with the support tube 57A, and an external air supply supplies an air flow to the arc duct 55A through the support tube 57A and then is ejected outward through the first air outlet hole 91. As shown in fig. 3b and 4b, a branch pipe 56A is provided between the support pipe 57A and the arc duct 55A, and the support pipe 57A supports the arc duct 55A on the one hand and delivers the air flow to the arc duct 55A through the branch pipe 56A, through the branch pipe 56A. Preferably, the support tube 57A is a square tube to facilitate a welded connection.

In an embodiment of the present invention, the frame 50A further includes a first side frame 51A and a second side frame 52A, the first side frame 51A and the second side frame 52A are located at two ends of the frame 50A, and the support tube 57A is installed between the first side frame 51A and the second side frame 52A; the arc-shaped duct 55A is mounted to the support tube 57A, and each of the first air outlet holes 91 communicates with the support tube 57A, the support tube 57A being capable of delivering an air flow to the first air outlet hole 91; the first side frame 51A and the second side frame 52A can be attached to bearing seats at both ends of the tension roller, respectively. Through the cooperation of first side frame 51A and second side frame 52A and bearing frame 21, make things convenient for the dismouting between arc grid 5A and the bearing frame 21.

Specifically, as shown in fig. 1c and 1d, in the feeding arc grid 6, a first side frame 51A and a second side frame 52A are respectively coupled with a bearing seat of the feeding tension roller 3 through bolts. The first side frame 51A is provided with air holes, one side of each air hole is communicated with the supporting tube, the other side of each air hole corresponds to the air hole on the inner side of the bearing seat 21 of the feeding tension roller 3, and a sealing ring 8 is arranged between the two air holes to ensure that the air is not leaked. The other end of the support tube 57A is blocked by the second side frame 52A. And a thread is processed on an air hole at the outer side of a bearing seat 21 of the feeding tension roller 3 and is used for connecting the quick-change connector 7 and a workshop air source. The structure can facilitate roll changing and save the roll changing time.

In the discharging arc-shaped grid 5, a first side frame 51A and a second side frame 52A are respectively connected with a bearing seat of the discharging tension roller 2 through bolts. An air hole is processed on the first side frame 51A, one side of the air hole is communicated with the supporting pipe, the other side of the air hole corresponds to the air hole on the inner side of the bearing seat 21 of the discharging tension roller 2, and a sealing ring 8 is arranged between the two air holes to ensure that the air is not leaked. The other end of the support tube 57A is blocked by the second side frame 52A. And the outer side air hole of the bearing seat 21 of the discharging tension roller 2 is processed with threads for connecting the quick-change connector 7 and a workshop air source.

In order to enhance the strength of the frame body 50A, the frame body 50A further includes a cross bar 58A arranged parallel to the support tube 57A, both ends of the cross bar 58A are connected to the first side frame 51A and the second side frame 52A, and each arc-shaped conduit 55A is connected to the cross bar 58A and supported by the cross bar 58A.

In one embodiment of the present invention, as shown in fig. 3a and 3b, an outlet guide plate 541 is disposed at the discharging end of the discharging arc-shaped grid 5, the outlet guide plate 541 has an inner guide surface 543 and an outer bearing surface 544, the inner guide surface 543 is disposed tangentially and is used for guiding the strip steel between the discharging arc-shaped grid 5 and the discharging tension roller 2 to be discharged outwards; the outer bearing surfaces 544 can guide the strip steel to move toward the roll gap between the discharge tension roll 2 and the discharge compression roll 1. The tension roller threading device shown in fig. 1a supports the outer support surface 544 of the outlet guide 541 for thick gauge strip steel that is not passed through the feeding roller but directly passed through the discharging tension roller 2; and the inner guide surface 543 of the outlet guide plate 541 is used for guiding the strip steel into the roll gap formed by the discharging press roll 1 and the discharging tension roll 2 through the thin steel plates of the feeding tension roll 3 and the discharging tension roll 2.

In one embodiment of the present invention, as shown in fig. 4a and 4b, in the feeding arc-shaped grid 6, an outlet sealing plate 542 is connected to the end of the arc-shaped conduit 55A at the discharging end for sealing the arc-shaped conduit 55A and ensuring that the air outlet blows air according to a preset position.

In the tension roller threading device shown in fig. 1a, strip steel is conveyed from bottom to top, when an automatic threading procedure starts, compressed air enters a quick-change connector 7 from a workshop air source through a pipeline, and at the moment, a discharging arc grid 5 and a feeding arc grid 6 are in a ventilation state. The sheet metal is at the centre gripping pan feeding of pan feeding compression roller 4 and pan feeding tension roller 3, get into pan feeding tension roller 3, the first shovel head 53A in contact pan feeding arc grid 6 of sheet metal area head at first, the second venthole 92 air feed of shovel head 53A lifts the steel sheet, the steel sheet of raising up can get into pan feeding arc grid 6 smoothly in, arc pipe 55A blows to the steel sheet along radial, make the steel sheet keep away from arc pipe 55A surface and attached 3 ejection of compact of pan feeding tension roller, because pan feeding tension roller 3 surface is the frosted surface, the coefficient of friction is great, along with self rotation, will drive attached steel sheet and carry out curvilinear motion. After the band head wears out pan feeding tension roller 3, the band head is under gravity this moment, the trend of downward motion, blow off compressed air by shovel head 53A in ejection of compact arc grid 5 this moment, lift the band head, make it get into ejection of compact arc grid 5 in, rely on arc pipe 55A's atmospheric pressure effect in ejection of compact arc grid 5 equally, the steel sheet will turn over the curved attached roller surface ejection of compact at ejection of compact tension roller 2 and discharge, along with the rotation of ejection of compact tension roller 2, drive the pan feeding at frictional force, the steel sheet will be driven by ejection of compact tension roller 2 and move to the export, finally through the direction of export baffle 541, get into the roll gap that is formed by ejection of compact compression roller 1 and ejection of compact tension roller 2 in, draw forth the tension roller, realize automatic threading work.

In general, thin gauge strip steel is difficult to drive through a complicated path such as an S-shaped path, so that the threading problem is easy to occur on site. According to the tension roller threading device, the arc-shaped guide pipe 55A is used for applying radial pressure along the way to the thin steel plate, so that the thin steel plate is attached to the tension roller, the degree of freedom of the steel plate is controlled by means of the driving friction force of the tension roller, the steel plate is in controlled motion, the steel plate can easily penetrate out of the tension roller, and the effect of the steel plate moving from bottom to top is particularly better. This tension roller threading device make full use of the texturing condition of tension roller roll surface, rely on atmospheric pressure to attach the sheet metal on the tension roller surface, just in time can take the steel sheet out of the tension roller with the help of the rotation of tension roller, cooperate pan feeding compression roller 4 and ejection of compact compression roller 1's additional action again, will make the threading process really realize automatically, improve production efficiency, reduce workman intensity of labour.

Example two

The invention provides an arc-shaped grid 5A, wherein the arc-shaped grid 5A can be matched with the roller surface of a tension roller and is used for guiding strip steel to move along the tension roller, as shown in fig. 3a and 4a, a plurality of first air outlet holes are arranged on the inner side of the arc-shaped grid 5A, and air flow of the first air outlet holes 91 blows towards the roller surface of the tension roller. As shown in fig. 1a, the arc-shaped grid 5A can be applied to the tension roller threading device as the feeding arc-shaped grid 6 or the discharging arc-shaped grid 5.

In one embodiment of the present invention, the arc-shaped grid 5A comprises a frame body and a plurality of arc-shaped guide pipes 55A fixed to the frame body 50A, wherein the arc-shaped guide pipes 55A are provided with a plurality of first air outlet holes 91; the arc-shaped grid 5A is provided with a reference axis, the arc-shaped guide pipes 55A extend around the reference axis, the arc-shaped guide pipes 55A are distributed at intervals along the reference axis, the arc-shaped grid 5A is integrally in an arc-shaped cylinder shape, and the reference axis is parallel to the extending direction of the arc-shaped cylinder; the arcuate duct 55A has an inner reference line 551, the inner reference line 551 coinciding with an inner contour line 552 of the arcuate duct 55A on a projection perpendicular to the reference axis; the first exit hole 91 is offset from the inner reference line 551. When the arc-shaped grid 5A is used as the feeding arc-shaped grid 6, the inner reference line 551 takes the axis of the feeding tension roller 3 as a reference, the inner reference line 551 is parallel to the axis of the feeding tension roller 3, and the two can be overlapped or deviated; when the arc-shaped grid 5A is used as the discharge arc-shaped grid 5, the inner reference line 551 is referenced to the axis of the discharge tension roller 2, and the inner reference line 551 is parallel to the axis of the discharge tension roller 2, and may overlap or deviate from each other.

In one embodiment of the present invention, the frame 50A includes a first side frame 51A, a second side frame 52A, and a support pipe 57A extending along the axis of the tension roller, the first side frame 51A and the second side frame 52A are located at both ends of the frame 50A, and the support pipe 57A is installed between the first side frame 51A and the second side frame 52A; the arc-shaped duct 55A is mounted to the support tube 57A, and each of the first air outlet holes 91 communicates with the support tube 57A, the support tube 57A being capable of delivering an air flow to the first air outlet hole 91; the first side frame 51A and the second side frame 52A can be attached to the bearing housings 21 at both ends of the tension roller, respectively. Through this structure, can make things convenient for the dismouting between arc grid 5A and the bearing frame 21, be convenient for be applied to current tension roller structure, reform transform, improve and wear the area.

In one embodiment of the present invention, the feeding end of the arc-shaped grid 5A is provided with a shovel head 53A for guiding the strip steel, the shovel head 53A is provided with a second air outlet 92, and the air flow of the second air outlet 92 blows towards the strip steel along the tangential direction of the tension roller. The design of the shovel head 53A of ventilating to set up the second venthole 92 on the shovel head 53A, the air current cooperates with the guide of the shovel head 53A together to guide the tape head, the air gap that forms more does benefit to the raising of tape head, can make the passage of belted steel more smooth and easy.

The tension roller threading device and the arc-shaped grid 5A can be applied to the threading link in the cold rolling production of strip steel, and particularly have better effect on thin-specification strip steel. For example, it can be used in a leveler or a scale breaker.

EXAMPLE III

The present invention provides a leveler, as shown in fig. 6, including: a leveling device 90; the tension roller threading device is arranged at the feeding port of the leveling device 90; the tension roller threading device is arranged at the discharge port of the leveling device 90. The leveling device 90 is a working unit of a leveling machine and is used for leveling strip steel; the tension roller threading device at the feeding port and the tension roller threading device at the discharging port establish tension on the strip steel. As shown in fig. 6, the belt threading device of the tension roller at the feeding port can adopt a feeding mode from bottom to top, and the belt threading device of the tension roller at the discharging port can adopt a feeding mode from top to bottom.

The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.

Claims

1. A tension roller threading device, comprising:

the feeding compression roller is matched with the feeding tension roller;

2. The tension roller threading device of claim 1, wherein the arcuate lattice comprises a frame body and a plurality of arcuate guide tubes fixed to the frame body, the arcuate guide tubes having a plurality of the first air outlet holes disposed thereon;

in the feeding arc grid, the arc guide pipes extend around the axis of the feeding tension roller, and a plurality of arc guide pipes are distributed at intervals along the axis of the feeding tension roller;

in the discharging arc-shaped grid, the arc-shaped guide pipes extend around the axis of the discharging tension roller, and the arc-shaped guide pipes are distributed at intervals along the axis of the discharging tension roller.

3. Tension roller threading device according to claim 2, characterized in that the arc-shaped duct is a round tube.

4. Tension roller threading device according to claim 3, characterized in that the arched conduit has an inner reference line which, in a projection perpendicular to the axis of the feed tension roller, coincides with the inner contour of the arched conduit;

the first outlet hole is offset from the inner reference line.

5. The tension roller threading device of claim 4, wherein the first air outlet holes of the arcuate duct are alternately disposed on opposite sides of the inner reference line.

6. The tension roller threading device of claim 2, wherein in the feeding arc grid, in a projection perpendicular to the axis of the feeding tension roller, the radial distance between each point on the inner contour line of the arc conduit and the axis of the feeding tension roller gradually decreases from the feeding end of the feeding arc grid to the discharging end of the feeding arc grid;

in the discharging arc-shaped grid, on a projection perpendicular to the axis of the discharging tension roller, the radial distance between each point on the inner contour line of the arc-shaped guide pipe and the axis of the discharging tension roller is gradually reduced from the feeding end of the discharging arc-shaped grid to the discharging end of the discharging arc-shaped grid.

7. Tension roller threading device according to claim 2, characterized in that the arc-shaped grid has a reference axis parallel to the axis of the feed tension roller, the arc-shaped duct extending in a circumferential direction around the reference axis;

in the feeding arc-shaped grid, the reference axis is positioned on one side of the axis of the feeding tension roller, which is far away from the discharging tension roller;

in the discharging arc-shaped grid, the reference axis is positioned on one side, close to the feeding tension roller, of the axis of the discharging tension roller.

8. Tension roller threading device according to claim 1, characterized in that the feed end of the arc-shaped grid is provided with a shovel head for guiding the strip.

9. The tension roller threading device of claim 8, wherein the shovel head is provided with a second air outlet, and air flow of the second air outlet blows towards the strip steel along a tangential direction.

10. The tension roller threading device according to claim 9, wherein the second air outlet hole has an air outlet end portion provided on the front end surface of the shovel head and an air outlet side portion provided on the inner side surface of the shovel head, and an air flow at the air outlet end portion is blown to the strip steel in a tangential direction and an air flow at the air outlet side portion is blown to the roller surface in a radial direction.

11. The tension roller threading device of claim 2, wherein the frame includes a support tube extending along an axis of the feed tension roller, the arcuate duct being mounted to the support tube, and each of the first exit holes being in communication with the support tube, the support tube being capable of delivering a flow of air to the first exit hole.

12. The tension roller threading device of claim 1, wherein an outlet guide plate is disposed at a discharge end of the discharge arc-shaped grid, the outlet guide plate has an inner guide surface and an outer bearing surface, the inner guide surface is used for guiding the strip steel between the discharge arc-shaped grid and the discharge tension roller to be discharged outwards, and the outer bearing surface is capable of guiding the strip steel to move towards a roller gap between the discharge tension roller and the discharge compression roller.

13. The tension roller threading device according to claim 1, wherein the feeding compression roller, the feeding tension roller, the discharging tension roller and the discharging compression roller are sequentially arranged in a direction from bottom to top;

or the feeding compression roller, the feeding tension roller, the discharging tension roller and the discharging compression roller are sequentially arranged along the direction from top to bottom.

14. The utility model provides an arc grid, arc grid can cooperate with the roll surface of tension roll, arc grid is used for guiding belted steel edge the tension roll motion, its characterized in that, arc grid's inboard is equipped with a plurality of first ventholes, and the air current of first venthole blows to the roll surface of tension roll.

15. The arcuate grid of claim 14, wherein said arcuate grid includes a frame and a plurality of arcuate ducts secured to said frame, said arcuate ducts having a plurality of said first outlet apertures formed therein;

the arc-shaped grid has a reference axis about which the arc-shaped conduits extend, a plurality of the arc-shaped conduits being spaced apart along the reference axis;

the arc-shaped guide pipe is provided with an inner reference line, and the inner reference line is superposed with the inner contour line of the arc-shaped guide pipe on a projection perpendicular to the reference axis; the first outlet hole is offset from the inner reference line.

16. The arcuate grid of claim 15, wherein said frame includes a first side frame, a second side frame, and support tubes extending along an axis of said tension roller, said first and second side frames being positioned at opposite ends of said frame, said support tubes being mounted between said first and second side frames;

the arc-shaped guide pipe is arranged on the support pipe, each first air outlet is communicated with the support pipe, and the support pipe can convey air flow to the first air outlet;

the first side frame and the second side frame can be respectively installed on the bearing seats at the two ends of the tension roller.

17. The arc-shaped grid according to claim 14, wherein a shovel head for guiding the strip steel is arranged at the feeding end of the arc-shaped grid, a second air outlet is arranged on the shovel head, and the air flow of the second air outlet blows towards the strip steel along the tangential direction of the tension roller.

18. A temper mill, comprising:

a leveling device;

the tension roller threading device of any one of claims 1 to 13 disposed at a feed port of the leveling device;

the tension roller threading device of any one of claims 1 to 13 disposed at the discharge port of the leveling device.