Device capable of applying compound functions of tight winding and tail pressing

Abstract

The invention relates to a device capable of applying compound functions of tight coiling and tail pressing, belongs to the technical field of strip steel finishing equipment, and particularly relates to a front tension pre-bending structure of a coiling machine suitable for high-strength or super-thick strip steel. Comprising a rack, a lifting type inlet lower tension roller, a guide idler roller, an upper tension roller (having a tail pressing roller function), an upper pinch roller and corresponding transmission and adjusting mechanisms. And the upper pinch roll is positioned between the guide idler roll and the upper tension roll. According to the device, by integrating the compound functions of tight winding and tail pressing, the winding tension can be balanced in the strip steel finishing treatment and coiling process, and the strip tail is pre-bent, so that the coiling quality is improved. And the structure is compact, functions are integrated, regulation and control are flexible, and the operation stability and investment cost performance of the unit are effectively improved. By arranging the adjustable upper tension roller and the inlet lower tension roller as well as an innovative regulation and control mechanism, the production requirements of strip steel with different thicknesses and strengths can be met, and the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of strip steel finishing equipment and relates to a device capable of applying the combined functions of coiling and tail pressing. Background Art

[0002] In the strip finishing process, many raw steel coils are uncoiled, clamped, straightened and subsequently finished (such as flattening, trimming, pickling, etc.) before being coiled. Especially for high-strength strip steel or ultra-thick strip steel, the existing tension pre-bending structure has some problems. For example, the force application points are dispersed, the relative sliding surfaces of the force application parts are too many, and the steel-passing rack is too long. These problems can easily lead to increased wear on the sliding surfaces of the force application parts during long-term high-load production, thereby reducing the horizontal and vertical accuracy of the force application roller body. This will not only increase the tower value between the layers of the finished coil, but may also lead to increased overflow of the tail for several turns, affecting the quality of the finished coil shape. In addition, the dispersion of structural components and the lengthy rack will also lead to an increase in the number of hydraulic components and an increase in the amount of equipment and cargo, reducing the cost-effectiveness of the unit investment.

[0003] Existing tensioning and pre-bending devices usually adopt different structural forms, but there are some common problems in actual production. For example, the relative stability of the force roller group and the roller surface accuracy are not high, the structure is complex, the floor space is large, and the weight is heavy. These problems limit the performance and efficiency of existing devices in practical applications. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a strip finishing device with compact structure, integrated functions and flexible regulation, so as to effectively improve the coiling quality and coil shape quality of high-strength or ultra-thick strip steel in the finishing process, while improving the operating stability and investment cost-effectiveness of the unit.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A device capable of applying the combined functions of winding tightening and tail pressing comprises: a frame for supporting and fixing other components; a lifting inlet lower tension roller, arranged on the inner side of the frame, for providing the initial winding tension; a guide idler roller, located on the inlet side of the frame, for assisting the guiding and pre-bending of the strip; an upper tension roller, located on the inner side of the frame, for both the tail pressing roller function and for adjusting the winding tension, and its position is adjusted by a pressing cylinder; an upper pinch roller, driven by a variable frequency motor, for transmitting the kinetic energy and assisting the strip head to enter the coiler; an outlet lower tension roller, as an outlet deflection roller, fixed on the frame crossbeam, for maintaining winding stability; the upper tension roller cooperates with the lifting inlet lower tension roller and the upper pinch roller.

[0007] Optionally, the lifting direction of the outlet lower tension roller is fixed, the initial elevation of the roller surface is designed to be flush with the elevation of the steel wire, and the roller is fixed to the frame in the axial direction with a locking plate.

[0008] Optionally, one side of the upper pinch roller moves up and down along a slide rail fixed to the inner side of the frame through its bearing seat, and the other side fits with the slide rail on the bearing seat of the upper tension roller and is equipped with a synchronous gear rack.

[0009] Optionally, the bearing seat of the lifting inlet lower tension roller moves up and down along a slide rail fixed on the inner side of the frame, and the other side fits with the slide rail on the bearing seat of the outlet lower tension roller, and is equipped with a synchronous gear rack.

[0010] Optionally, the bearing seat of the upper tension roller can be lifted and lowered along a slide rail fixed on the inner side of the frame, and the other side is matched with a slide rail on the bearing seat of the upper pinch roller, and is equipped with a synchronous gear rack.

[0011] Optionally, a guide platform that rises and falls synchronously with the entrance lower tension roller is provided between the lifting entrance lower tension roller and the exit lower tension roller, so as to ensure a smooth transition of the strip during the threading process.

[0012] Optionally, at least one guide idler roller is arranged on the inlet side of the frame to ensure rolling friction on the lower surface during the pre-bending condition of the belt tail.

[0013] Optionally, the device is arranged close to the inlet side of the coiler, and the tension segmentation function of the device is used to meet the requirements of high-tension coiling conditions; the tension segmentation function is specifically as follows: by adjusting the positions of the upper tension roller and the inlet lower tension roller, the high-tension coiling requirements are achieved; in normal production, the relative positions of the upper tension roller and the inlet lower tension roller are maintained to balance the coiling tension; in the tail coiling condition, the inlet lower tension roller is moved downward, and the upper tension roller is continued to be pressed down to adjust the tail, and the tail is pre-bent to meet the coil shape quality requirements of the outer ring of the finished steel coil.

[0014] Optionally, the lifting type inlet lower tension roller is lifted and lowered by a lifting cylinder.

[0015] Optionally, the upper pinch roller is driven by an upper pinch roller transmission motor to press the upper pinch roller down cylinder.

[0016] The beneficial effects of the present invention are:

[0017] Compact structure: By integrating multiple functions into one, the device occupies a small area and has a compact structure, which is easy to install and layout in the existing production line.

[0018] Functional integration: This device integrates the functions of coiling and tail pressing, which can simultaneously meet the requirements of coiling quality and coil shape quality of high-strength or ultra-thick strip steel in the finishing process, thereby improving production efficiency and product quality.

[0019] Flexible regulation: By setting an adjustable upper tension roller and an inlet lower tension roller, the device can flexibly adjust the winding tension according to different working conditions to ensure the stability of the winding process and the roll quality.

[0020] Improve operational stability: This device improves the operational stability of the unit and reduces failures and maintenance requirements through precise control mechanisms and stable structural design.

[0021] High investment cost performance: Due to its compact structure and integrated functions, this device saves space while reducing the investment cost and operating cost of the equipment, thus improving the overall investment cost performance.

[0022] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0024] Figure 1 This is a schematic diagram of the plane layout of the present invention

[0025] Figure 2 yes Figure 1 Section view along line AA

[0026] Figure 3 yes Figure 2 Schematic diagram along direction B

[0027] Figure 4 yes Figure 2 Schematic diagram along C direction

[0028] Figure 5 yes Figure 1 Schematic diagram of the position of roller groups in various working conditions along line AA, where: Figure 5 (1) is a schematic diagram showing that the tension roller is located at the upper limit and the lower tension roller at the entrance is located at the steel wire; Figure 5 (2) is a schematic diagram of the tension balance production condition; Figure 5 (3) is a schematic diagram of the strip steel entering the tail coiling state after the constant speed production is completed.

[0029] Figure numerals: 1—winder drum, 2—device frame, 3—lifting inlet lower tension roller, 4—guide idler roller, 5—upper tension roller (tail roller), 6—upper tension roller pressing cylinder, 7—exit lower tension roller transmission motor, 8—upper pinch roller transmission motor, 9—upper pinch roller, 10—exit lower tension roller (exit deflection roller), 11—upper pinch roller pressing cylinder, 12—lifting inlet lower tension roller lifting cylinder. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] See also Figure 1 to Figure 5 The present invention provides a device that can apply the combined functions of coiling and tail pressing, which is specially designed for strip finishing units with many finished products in coiled state. The device is equipped in front of the coiler to balance the coiling tension of the finished product during the strip finishing and coiling process, and pre-bend the strip tail to improve the coil quality, especially for high-strength or ultra-thick strips.

[0034] The technical solution of the present invention is centered around the concept of integrating the functions of coiling and tail pressing and sharing the force-applying components, and innovatively develops a compact, applicable, and flexibly adjustable tensioning and pre-bending device. The device reduces the relative sliding surface of the force-applying components, avoids the accumulated wear of the sliding surface under long-term high-load conditions, and ensures the horizontal and vertical accuracy requirements of each force-applying roller surface during operation, thereby ensuring the smooth operation of the finished product during high-speed coiling, and the controllable overflow during the tail swinging process, ensuring the coiling quality and coil shape quality of the finished high-strength or ultra-thick strip steel coil, and meeting customers' comprehensive quality requirements for finished steel coils.

[0035] The device for realizing the above technical solution includes device frame 2, lifting entrance lower tension roller 3, lifting entrance lower tension roller lifting cylinder 12, guide idler roller 4, upper tension roller 5 (tail roller), upper tension roller pressing cylinder 6, upper pinch roller 9, upper pinch roller pressing cylinder 11, outlet lower tension roller 10 (exit deflection roller), outlet lower tension roller transmission motor 7, upper pinch roller transmission motor 8 and other auxiliary facilities. The device adopts an integral door-type frame 2 as a load-bearing support, and the internal force-applying components are interlocked with each other.

[0036] One side of the bearing seat of the upper tension roller 5 is interlocked with the slideway on the device frame 2, and the other side is interlocked with the bearing seat of the upper pinch roller 9 by a slideway, which can also realize different position adjustments for tensioning and tail pressing conditions, and the adjustment control is realized by the displacement sensor on the upper tension roller pressing cylinder 6. One side of the bearing seat of the upper pinch roller 9 is interlocked with the slideway on the device frame 2, and the other side is interlocked with the bearing seat of the upper tension roller 5 by a slideway, which can realize position adjustment during pinching and threading, and the adjustment control is realized by the pressure sensor on the upper pinch roller pressing cylinder 11.

[0037] The bearing seat of the upper tension roller 5 can be lifted and lowered along the slide rail fixed on the inner side of the frame, and the other side is matched with the slideway on the bearing seat of the upper clamping roller 9, and is equipped with a synchronous gear rack. When implementing the tension balance working condition, the upper tension roller 5 is pressed down and adjusted according to the thickness and strength of the strip and the calculated value of the secondary model to meet the necessary winding tension for the current strip winding (the critical range of the pressing amount is -110mm~-25mm, the steel line is zero, the upward is positive, and the downward is negative). When implementing the tail pre-bending forming working condition, the upper tension roller 5 is pressed down and adjusted according to the thickness and strength of the strip and the calculated value of the secondary model to meet the current strip outer ring bending forming requirements (the critical range of the pressing amount is -230mm~-60mm, the steel line is zero, the upward is positive, and the downward is negative).

[0038] A guide platform that rises and falls synchronously with the entrance lower tension roller 3 and the exit lower tension roller 10 is arranged between them, which not only ensures smooth belt threading and steel passing, but also releases the pressing depth space for the pre-bending of the belt tail. The four mutually force-applying and load-bearing components of the lifting entrance lower tension roller 3, the exit lower tension roller 10, the upper tension roller 5 and the upper pinch roller 9 are compactly and reliably combined in space and share a strong door-type frame 2. The innovative structure is greatly conducive to stable production operation, tightness of finished product coiling and coil quality, and has a very high investment cost performance.

[0039] A guide idler roller 4 is arranged at the entrance side of the portal frame 2 to ensure rolling friction on the lower surface during the pre-bending of the strip tail to improve the surface quality of the strip. The device is arranged close to the entrance side of the coiler, and the tension segmentation function of the device is used to meet the requirements of high tension coiling conditions to ensure stable coiling operation and tightness of the coiling section, and the tail pre-bending function of the device is used to meet the outer ring shape quality of the finished steel coil.

[0040] For all the strip steels of all thicknesses in the unit product outline, before the strip head passes through the device of the present invention, the upper tension roller 5 is located at the upper limit position, and the lower tension roller 3 at the entrance is located at the steel line position, such as Figure 5 (1) As shown. After the strip head passes through the upper pinch roller 9, the upper pinch roller 9 descends to press the strip steel, and works in conjunction with the unit to pinch and deliver the strip head into the jaws of the coiler, thus completing the strip threading operation.

[0041] After the strip is threaded, the unit enters normal production operation, that is, the tension balance production condition. At this time, the lower tension roller 3 at the entrance is located at the steel wire position, and the upper tension roller 5 is pressed down for adjustment. Figure 5 (2) to balance the coiling tension required by the current strip and ensure the coiling quality of the finished steel coil. The reduction is calculated based on the thickness and strength of the strip and obtained through the secondary model.

[0042] When the strip is produced at a constant speed and enters the tail coiling state, the lower tension roller 3 at the entrance drops to the lower limit position, and the upper tension roller 5 enters the tail pressing mode and continues to adjust the pressure. Figure 5 (3) The adjustment of this reduction is also based on the thickness and strength of the strip and is calculated through the secondary model. The purpose is to pre-bend the strip tail to ensure the coil quality of the outer ring of the finished steel coil.

[0043] The present invention implements the combined functions of coiling and tail pressing for steel strips, especially high-strength and ultra-thick steel strips, during the coil finishing process, thereby greatly improving the steady-state operation of the unit, ensuring the coiling quality of the finished steel coils, and achieving a good effect on the pre-bending of the strip tail, thereby ensuring the quality of the finished coil shape.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A device capable of applying the combined functions of winding and tail pressing, characterized in that: include: Frame (2): used to support and fix other components; A lifting inlet lower tension roller (3): arranged on the inner side of the frame (2) and used for providing initial winding tension; Guide idler roller (4): located at the inlet side of the frame (2), used to assist in strip guiding and pre-bending; Upper tension roller (5): located inside the frame (2), used for pressing the tail roller and adjusting the winding tension, and its position is adjusted by pressing down the cylinder (6); Upper pinch roller (9): driven by a variable frequency motor, used to transmit belt energy and assist the belt head to enter the coiler; The outlet lower tension roller (10) is used as an outlet deflection roller, fixed on the crossbeam of the frame (2) to maintain the winding stability; The upper tension roller (5) cooperates with the lifting-type inlet lower tension roller (3) and the upper pinch roller (9).

2. The device according to claim 1, characterized in that: The lifting direction of the outlet lower tension roller (10) is fixed, the roller surface is designed to have an initial elevation flush with the steel wire elevation, and is axially fixed to the frame (2) by a locking plate.

3. The device according to claim 1, characterized in that: One side of the upper pinch roller (9) moves up and down along a slide rail fixed on the inner side of the frame through the bearing seat of the upper pinch roller (9), and the other side fits with the slideway on the bearing seat of the upper tension roller (5) and is equipped with a synchronous gear rack.

4. The device according to claim 1, characterized in that: The bearing seat of the lifting inlet lower tension roller (3) moves up and down along the slide rail fixed on the inner side of the frame, and the other side is matched with the slide rail on the bearing seat of the outlet lower tension roller (10), and is equipped with a synchronous gear rack.

5. The device according to claim 1, characterized in that: The bearing seat of the upper tension roller (5) can be lifted and lowered along a slide rail fixed on the inner side of the frame, and the other side is matched with a slideway on the bearing seat of the upper pinch roller (9) and is equipped with a synchronous gear rack.

6. The device according to claim 1, characterized in that: A guide platform which rises and falls synchronously with the entrance lower tension roller (3) and the exit lower tension roller (10) is arranged between the lifting type entrance lower tension roller (3) and the exit lower tension roller (10) to ensure the transition of the strip during the strip threading process.

7. The device according to claim 1, characterized in that: At least one guide idler roller (4) is arranged on the inlet side of the frame (2) to ensure rolling friction on the lower surface during the pre-bending of the belt tail.

8. The device according to claim 1, characterized in that: The device is arranged close to the inlet side of the coiler, and the tension segmentation function of the device is used to meet the requirements of high tension coiling conditions; the tension segmentation function is specifically: By adjusting the positions of the upper tension roller (5) and the lower tension roller (3) at the entrance, the requirements of a high-tension coiling condition can be met; during normal production, the upper tension roller (5) and the lower tension roller (3) at the entrance maintain relative positions to balance the coiling tension; during the coiling condition of the tail of the strip, the lower tension roller (3) at the entrance moves downward, and the upper tension roller (5) continues to be pressed downward for adjustment to pre-bend the tail of the strip, thereby meeting the coil shape quality requirements of the outer ring of the finished steel coil.

9. The device according to claim 1, characterized in that: The lifting type entrance lower tension roller (3) is lifted and lowered by a lifting cylinder (12).

10. The device according to claim 1, characterized in that: The upper pinch roller (9) is driven by the upper pinch roller transmission motor (8) to drive the upper pinch roller pressing cylinder (11).

Images