Coiler arm device for assisting coiling, coiler, and strip coiling method

Abstract

The present application relates to a kind of arm device for helping roll, including arm frame and arm drive unit, the front end of arm frame is equipped with belt tensioning roller, arm frame is also equipped with auxiliary pressing mechanism, auxiliary pressing mechanism includes mounting plate, pressing unit and position adjusting unit, mounting plate is connected on arm frame, pressing unit is located on mounting plate and is located at the front side of belt tensioning roller;Position adjusting unit cooperates with mounting plate, so that pressing unit is close to reference circle and the spacing between reference circle is adjustable, reference circle is the excircle of the belt outlet of belt tensioning roller.In addition, it also relates to the coiler using the arm device and the strip steel coiling method based on the coiler.The present application can increase the wrap angle of strip steel on reel, produce better coiling effect;At the same time, by adjusting the spacing between pressing unit and reel, it can avoid scratching strip steel or appearing indentation on the surface of strip steel, so as to effectively improve the quality of strip steel.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of metallurgical equipment, and particularly relates to a holding arm device for assisting coiling, a coiler adopting the holding arm device, and a strip coiling method based on the coiler. BACKGROUND

[0002] Strip coiling is an important link in the production of the steel industry. With the change in market demand for automobile plates, household appliance plates and electrical steel, high-strength steel, medium plate and ultra-thin plate are important development directions of steel products, which continuously put forward innovation requirements for the process equipment of steel production. The use of coiling assisting equipment can improve the efficiency and effect of strip coiling. However, when coiling soft strip steel such as thin plate with a thickness less than 0.5 mm or galvanized thin plate, adverse conditions such as strip scratching or indentation on the surface of the strip steel are prone to occur. SUMMARY

[0003] The present application relates to a holding arm device for assisting coiling, a coiler adopting the holding arm device, and a strip coiling method based on the coiler, which can at least solve some defects of the prior art.

[0004] The present application relates to a holding arm device for assisting coiling, which comprises a holding arm frame and a holding arm driving unit. A belt tensioning roller is arranged at the front end of the holding arm frame. An auxiliary pressing mechanism is further arranged on the holding arm frame. The auxiliary pressing mechanism comprises a mounting plate, a pressing unit and a position adjusting unit. The mounting plate is connected to the holding arm frame. The pressing unit is arranged on the mounting plate and located at the front side of the belt tensioning roller. The position adjusting unit cooperates with the mounting plate so that the pressing unit is close to a reference circle and the distance between the pressing unit and the reference circle is adjustable. The reference circle is an excircle at the belt outlet of the belt tensioning roller.

[0005] As one of the embodiments, the pressing unit comprises an auxiliary pressing roller arranged on the mounting plate. The axis of the auxiliary pressing roller is parallel to the axis of the belt tensioning roller. The auxiliary pressing roller is adapted to be tangent to the reference circle. The pressing unit can further comprise a guide surface formed on the mounting plate and facing the reference circle.

[0006] As one of the embodiments, the pressing unit comprises a plurality of high-pressure nozzles arranged on the mounting plate. The blowing direction of each high-pressure nozzle is towards the reference circle. A gas supply pipeline for supplying medium gas to each high-pressure nozzle is arranged on the holding arm frame.

[0007] As one of the embodiments, each high-pressure nozzle is arranged in a plurality of nozzle groups. Each nozzle group is sequentially arranged along the circumference of the reference circle. Each nozzle group comprises a plurality of high-pressure nozzles sequentially and spacedly arranged along the axis of the belt tensioning roller.

[0008] As one of the embodiments, the mounting plate is hinged to the arm embracing frame; the position adjusting unit comprises a limiting rod and a position adjusting part for limiting the movement of the limiting rod along its own axis, the limiting rod is mounted on the arm embracing frame and located on the swing path of the mounting plate.

[0009] As one of the embodiments, the limiting rod is a screw rod, and the position adjusting part is an adjusting nut arranged on the arm embracing frame, the limiting rod is screwed with the adjusting nut.

[0010] As one of the embodiments, the arm embracing frame is further provided with a pressure adjusting mechanism for adjusting the pressure of the pressing unit on the head of the strip.

[0011] As one of the embodiments, the mounting plate is hinged to the arm embracing frame; the pressure adjusting mechanism comprises a pressure adjusting spring, a pull rod and a positioning nut, two ends of the pressure adjusting spring are respectively hinged to the mounting plate and the pull rod, the pull rod passes through an adjusting seat on the arm embracing frame and is screwed with the positioning nut.

[0012] The present application further relates to a coiler comprising a coiler frame, and the arm embracing device for coiling is arranged on the coiler frame.

[0013] The present application further relates to a strip coiling method based on the coiler and the winding drum accommodated in the coiler frame.

[0014] The method comprises the following steps.

[0015] The head of the strip is pressed against the winding drum by the pressing unit, so that the coiling of the first circle of the strip is facilitated; meanwhile, the distance between the pressing unit and the winding drum is adjusted by adjusting the distance between the pressing unit and the reference circle, so that the strip is not scratched or the indentation is not formed on the surface of the strip.

[0016] The present application has at least the following beneficial effects.

[0017] The present application can increase the wrapping angle of the strip on the winding drum by arranging the pressing unit, so that the strip is more easily coiled and better coiling effect is achieved; meanwhile, the distance between the pressing unit and the winding drum is adjusted by adjusting the distance between the pressing unit and the reference circle, so that the strip is not scratched or the indentation is not formed on the surface of the strip, thereby effectively improving the quality of the strip. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0019] Figure 1 The structural schematic diagram of the coiling assisting device provided by the embodiment of the present application is shown in the figure.

[0020] Figure 2 The structural schematic diagram of the auxiliary pressing mechanism provided by the embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments only show some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0022] Embodiment one

[0023] As Figure 1 and Figure 2 The embodiment of the present application provides a coiling assisting device 1, which comprises an arm embracing frame 11 and an arm embracing driving unit. The front end of the arm embracing frame 11 is provided with a belt tensioning roller 12. An auxiliary pressing mechanism 13 is further provided on the arm embracing frame 11. The auxiliary pressing mechanism 13 comprises a mounting plate 131, a pressing unit and a position adjusting unit. The mounting plate 131 is connected to the arm embracing frame 11. The pressing unit is arranged on the mounting plate 131 and located at the front side of the belt tensioning roller 12. The position adjusting unit cooperates with the mounting plate 131, so that the pressing unit is close to a reference circle and the distance between the pressing unit and the reference circle is adjustable. The reference circle is an excircle at the belt outlet of the belt tensioning roller 12.

[0024] The arm embracing driving unit is used to drive the arm embracing frame 11 to swing, so that the arm embracing frame 11 has a coiled state close to the winding drum 3 and an open state away from the winding drum 3. In the coiled state, the belt tensioning roller 12 is close to the winding drum 3. The reference circle is concentric with the winding drum 3 and greater than or equal to the radius of the winding drum 3. At the same time, the auxiliary pressing mechanism 13 is also close to the winding drum 3.

[0025] The arm embracing driving unit can adopt a driving device such as a hydraulic cylinder or a pneumatic cylinder. The shell of the driving device is preferably hinged to the coiling assisting frame 2. The output end of the driving device is preferably hinged to the arm embracing frame 11, so that the arm embracing frame 11 can swing to be close to or away from the winding drum 3.

[0026] When coiling, the strip head enters a V-shaped passage formed by the coiling belt 4 and the winding drum 3, and the belt 4 and the winding drum 3 clamp and rotate the strip head to complete the first coil. The side of the mounting plate 131 close to the V-shaped passage can guide the strip head into the winding drum 3, that is, the pressing unit is located on the side of the belt tensioning roller 12 close to the V-shaped passage.

[0027] Generally, the wrap angle of the coiling belt 4 on the winding drum 3 via the belt tensioning roller 12 is α1, and the wrap angle α2 can be further increased by arranging the pressing unit, that is, the wrap angle of the strip on the winding drum 3 is α1+α2, which is larger and more easily coiled, and the free section of the strip head is smaller, and the first coil is more easily coiled tightly, thereby producing a better coiling effect.

[0028] In one embodiment, the pressing unit includes an auxiliary compression roller 132 arranged on the mounting plate 131, the axis of the auxiliary compression roller 132 is parallel to the axis of the belt tensioning roller 12, and the auxiliary compression roller 132 is adapted to be tangent to the reference circle; and / or, the pressing unit includes a guide surface 133 formed on the mounting plate 131 and facing the reference circle.

[0029] Among them, the auxiliary compression roller 132 can be multiple, when there are multiple auxiliary compression rollers 132, each auxiliary compression roller 132 is arranged along the circumference of the reference circle in sequence, and a relatively larger strip wrap angle can be obtained.

[0030] In one embodiment, the auxiliary compression roller 132 is floatingly arranged on the mounting plate 131, which can achieve the effect of self-adaptive adjustment of the strip pressing force, effectively reduce the friction between the auxiliary compression roller 132 and the strip, and better protect the strip.

[0031] As Figure 1 and Figure 2 , preferably, the auxiliary compression roller 132 and the guide surface 133 are arranged at the same time, and the guide surface 133 is located in front of the auxiliary compression roller 132; the auxiliary compression roller 132 has a rolling contact with the strip, and the friction is small, which can avoid scratching the strip while making the strip adhere to the winding drum 3; the contact friction between the guide surface 133 and the strip is relatively large, and when the guide surface 133 is arranged in front of the auxiliary compression roller 132 and there is a certain gap between the guide surface 133 and the winding drum 3, the guide surface 133 can still play a good guiding role on the strip, limit the length of the free section of the strip head, and prevent scratching the strip or leaving indentation on the surface of the strip.

[0032] Among them, the guide surface 133 can be a planar guide surface 133 or a curved guide surface 133, for example, an arc-shaped guide surface 133.

[0033] In one embodiment, as Figure 1 andFigure 2 The pressing unit comprises a plurality of high-pressure nozzles 134 arranged on the mounting plate 131, and the spraying direction of each high-pressure nozzle 134 is towards the reference circle (i.e. towards the winding drum 3). The arm holder 11 is provided with a gas supply pipeline for supplying medium gas to each high-pressure nozzle 134.

[0034] The high-pressure nozzles 134 are used to spray high-pressure medium gas to the surface of the strip steel, and the medium gas can be compressed air or the like.

[0035] The mounting plate 131 can be provided with a hollow groove, for example, a hollow groove is formed on the guide surface 133, and the high-pressure nozzles 134 are arranged in the hollow groove. In this way, the high-pressure nozzles 134 can be prevented from scratching the strip steel when protruding from the mounting plate 131.

[0036] In one embodiment, the high-pressure nozzles 134 are arranged on both sides of the auxiliary compression roller 132, and the high-pressure nozzles 134 arranged behind the auxiliary compression roller 132 are arranged between the auxiliary compression roller 132 and the belt tensioning roller 12.

[0037] In one embodiment, the high-pressure nozzles 134 are arranged in a plurality of nozzle groups, and each nozzle group is arranged along the circumference of the reference circle. Each nozzle group comprises a plurality of high-pressure nozzles 134 arranged along the axis of the belt tensioning roller 12.

[0038] By arranging the high-pressure nozzles 134, the high-pressure medium gas sprayed by the high-pressure nozzles 134 acts on the surface of the strip steel, so that the strip head is attached to the winding drum 3, and the strip steel is pressed. Since the gas contacts the strip steel, the surface of the strip steel will not be scratched or indented. Moreover, the pressure of the strip steel can be adjusted by adjusting the pressure of the medium gas. This adjustment method is convenient, efficient and reliable. In particular, when a gap channel is formed between the mounting plate 131 and the winding drum 3 (the gap channel has a certain length along the circumference of the reference circle), for example, the gap channel is formed between the guide surface 133 and the winding drum 3, the high-pressure medium gas sprayed by the high-pressure nozzles 134 is first constrained in the gap channel. The pressure of the strip steel can be continuously applied to ensure that the strip head is attached to the winding drum 3. Moreover, the high-pressure medium gas can better support the strip head, so that the strip head is suspended between the winding drum 3 and the mounting plate 131, and the strip steel is completely prevented from being scratched. Furthermore, in combination with the limiting effect of the auxiliary compression roller 132, the medium gas flows in the forward direction of the strip head, so that the strip head is better supported.

[0039] In one embodiment, the mounting plate 131 is hinged to the arm holder 11. The position adjusting unit adjusts the swinging position of the mounting plate 131, so that the distance between the pressing unit and the reference circle is adjustable.

[0040] Preferably, as shown in Figure 2The position adjusting unit comprises a limiting rod 1351 and a position adjusting part for limiting the movement of the limiting rod 1351 along its own axis, and the limiting rod 1351 is installed on the arm embracing frame 11 and located on the swinging path of the mounting plate 131. The spherical end of the limiting rod 1351 is in abutment with the mounting plate 131, and the abutment position is preferably located between the hinge shaft 1311 and the pressing unit of the mounting plate 131; the intersection angle between the axis of the limiting rod 1351 and the surface of the mounting plate 131 is preferably about 90°. By moving the limiting rod 1351, the spherical end of the limiting rod 1351 moves linearly, and the mounting plate 131 swings correspondingly, so that the distance between the pressing unit and the reference circle can be adjusted.

[0041] Preferably, the limiting rod 1351 is a screw rod, and the position adjusting part is an adjusting nut 1352 arranged on the arm embracing frame 11, and the limiting rod 1351 is screwed with the adjusting nut 1352, and the two can constitute a group of screw rod mechanisms, and the adjusting mode is preferably manual adjustment.

[0042] In one of the embodiments, the arm embracing frame 11 is further provided with a pressure adjusting mechanism for adjusting the pressure of the pressing unit on the head of the strip, so that the pressure of the pressing unit on the head of the strip can be adjusted, and the strip can be better protected.

[0043] For the scheme that the mounting plate 131 is hinged to the arm embracing frame 11, preferably, Figure 2 the pressure adjusting mechanism comprises a pressure adjusting spring 1361, a pull rod 1362 and a positioning nut 1363, both ends of the pressure adjusting spring 1361 are hinged with the mounting plate 131 and the pull rod 1362 respectively, the pull rod 1362 passes through an adjusting seat on the arm embracing frame 11 and is screwed with the positioning nut 1363. By adjusting the length of the pressure adjusting spring 1361 through the cooperation of the positioning nut 1363 and the pull rod 1362, the purpose of pressure adjustment can be achieved. Further, a locking nut 1364 is screwed on the pull rod 1362 to ensure the reliability of the position of the adjusted pull rod 1362.

[0044] Especially, by arranging the above-mentioned pressure adjusting mechanism, the mounting plate 131 has a floating effect, that is, the auxiliary compression roller 132 / guide surface 133 has a floating effect, so that the pressure change between the mounting plate 131 and the strip can be self-adapted, and the strip can be better protected.

[0045] Embodiment two

[0046] As Figure 1 embodiment of the present application provides an assisting coiler, which comprises an assisting coiler frame 2, and the arm embracing device 1 for assisting coiling provided in the above-mentioned embodiment one is further connected to the assisting coiler frame 2.

[0047] The coiler can include an upper arm device 1 and / or a lower arm device 1, and the upper arm device 1 and the lower arm device 1 can be the arm device 1 provided in the first embodiment.

[0048] Embodiment three

[0049] The present embodiment provides a strip coiling method, which is based on the coiler provided in the first embodiment and the winding drum 3 accommodated in the coiler frame 2.

[0050] The method comprises the following steps:

[0051] The winding drum 3 is matched with the pressing unit, so that the strip head is attached to the winding drum 3, thereby facilitating the coiling of the first turn of the strip; meanwhile, the distance between the pressing unit and the winding drum 3 is adjusted by adjusting the distance between the pressing unit and the reference circle, so as to avoid scratching the strip or leaving indentation on the surface of the strip.

[0052] Further, the medium gas is blown to the surface of the strip, and the high-pressure medium gas sprayed on the surface of the strip can make the strip head attached to the winding drum 3, thereby achieving the effect of pressing the strip. The related scheme has been described in the first embodiment, and thus will not be repeated here.

[0053] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A kind of arm device for helping roll, including arm holder and arm drive unit, the front end of the arm holder is provided with belt tensioning roller, it is characterized in that, The arm embracing frame is further provided with an auxiliary pressing mechanism, which comprises a mounting plate, a pressing unit and a position adjusting unit. The mounting plate is connected to the arm embracing frame, and the pressing unit is arranged on the mounting plate and located at the front side of the belt tensioning roller. The position adjusting unit cooperates with the mounting plate to make the pressing unit close to the reference circle and the distance between the pressing unit and the reference circle adjustable. The reference circle is an excircle at the belt outlet of the belt tensioning roller. The pressing unit comprises an auxiliary pressing roller arranged on the mounting plate, and the axis of the auxiliary pressing roller is parallel to the axis of the belt tensioning roller. The auxiliary pressing roller is adapted to be tangent to the reference circle. The pressing unit further comprises a guide surface formed on the mounting plate and facing the reference circle. The pressing unit further comprises a plurality of high-pressure nozzles arranged on the mounting plate, and the blowing direction of each high-pressure nozzle is towards the reference circle. The arm embracing frame is provided with a gas supply pipeline for supplying medium gas to each high-pressure nozzle. At least part of the high-pressure nozzles are located between the auxiliary pressing roller and the guide surface. The guide surface is adapted to form a gap channel with the winding drum. The high-pressure medium gas is first constrained in the gap channel, and the auxiliary pressing roller limits the flow of the medium gas, so that the medium gas flows in the forward direction of the belt head, thereby better protecting the belt head.

2. The arm for assisting in winding as claimed in claim 1, wherein: Each high-pressure nozzle is arranged in a plurality of nozzle groups, and each nozzle group is arranged along the circumference of the reference circle. Each nozzle group comprises a plurality of high-pressure nozzles arranged along the axis of the belt tensioning roller.

3. The arm for assisting in winding as claimed in claim 1, wherein: The mounting plate is hinged to the arm embracing frame. The position adjusting unit comprises a limiting rod and a position adjusting part for limiting the movement of the limiting rod along its axis. The limiting rod is installed on the arm embracing frame and located on the swing path of the mounting plate.

4. The arm for assisting in winding as claimed in claim 3, wherein: The limiting rod is a screw rod, and the position adjusting part is an adjusting nut arranged on the arm embracing frame. The limiting rod is screwed with the adjusting nut.

5. The arm assembly for assisting in the rolling of a document as recited in claim 1, wherein: The arm embracing frame is further provided with a pressure adjusting mechanism for adjusting the pressure of the pressing unit on the head of the strip.

6. A cradle arm device for assisting in the rolling of a document as defined in claim 5, wherein: The mounting plate is hinged to the arm embracing frame. The pressure adjusting mechanism comprises a pressure adjusting spring, a pull rod and a positioning nut. The two ends of the pressure adjusting spring are hinged to the mounting plate and the pull rod, respectively. The pull rod passes through an adjusting seat on the arm embracing frame and is screwed with the positioning nut.

7. A wrapper comprising a wrapper frame, characterized by: The arm embracing device for assisting winding is connected to the winding frame.

8. A strip steel coiling method, characterized by, The method is implemented based on the winding machine and the winding drum accommodated in the winding frame. The method comprises: The head of the strip is attached to the winding drum through the cooperation of the pressing unit and the winding drum, so that the winding of the first coil of the strip is easily completed. At the same time, the distance between the pressing unit and the winding drum is adjusted by adjusting the distance between the pressing unit and the reference circle, so as to avoid scratching the strip or causing indentation on the surface of the strip.

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