Five-roller tensioner

Abstract

The utility model discloses a five-roller tensioner, and relates to the technical field of strip steel hot rolling devices. The five-roller tensioner comprises a rack, a plurality of tension rollers, a plurality of pressing rollers and an auxiliary roller assembly, the auxiliary roller assembly comprises L-shaped side plates, a rotating shaft, a pressing shaft and an auxiliary roller, the two ends of the rotating shaft penetrate through the middles of the two L-shaped side plates and the two side vertical plates respectively, the rotating shaft is connected with the middles of the L-shaped side plates through bearings, the two ends of the pressing shaft penetrate through the front ends of the two L-shaped side plates respectively, and the auxiliary roller is connected with the two ends of the pressing shaft. The two ends of the pressing shaft are connected with first oil cylinder connectors through bearings, the first oil cylinder connectors are connected with feeding oil cylinders rotationally arranged at the tops of the side vertical plates, the two ends of the auxiliary roller are connected with the rear ends of the two L-shaped side plates through bearings correspondingly, and the auxiliary roller is arranged above the tensioning roller at the feeding end in parallel. And a transmission assembly is arranged between the auxiliary roller and the tensioning roller at the feeding end. The five-roller tensioner is provided with the auxiliary roller assembly, the friction force between the strip and the roller surface can be increased, and the strip is prevented from slipping on the roller surface in the feeding process.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel hot rolling devices, in particular to a five-roller tension machine. Background Art

[0002] When the hot-rolled strip is annealed and coiled, the temperature and properties of the hot-rolled strip change after passing through the annealing furnace, which may cause the tension of the material to fluctuate. If the strip with unstable tension is directly fed into the coiler, it may cause problems such as uneven coiling, material deformation or damage. Therefore, when the hot-rolled strip is coiled, a tensioner needs to be arranged between the annealing furnace and the coiler to adjust the tension of the strip during the coiling process so that the strip can be coiled neatly and tightly.

[0003] Chinese patent document CN201529671U discloses a five-roll tension machine, which includes a cylinder seat and a wall panel fixed on a frame, a cylinder is installed on the cylinder seat, the piston rod end of the cylinder is fixedly connected to an upper roller seat, an upper roller is rotatably installed on the upper roller seat, a track groove is provided on the wall panel, the upper roller is stuck in the track groove, a lower roller seat is provided below the upper roller seat, and a lower roller is rotatably installed on the lower roller seat. The five-roll tension machine straightens the strip by adjusting the roller gap between the upper roller and the lower roller, and provides post tension for the strip. However, the feed port of the tension machine lacks an auxiliary mechanism to prevent the strip from slipping. When the strip is in the feeding process, there may be a situation where the friction between the strip and the roller surface of the lower roller is insufficient, which causes the strip and the roller surface of the lower roller to slip, resulting in the strip feeding not being smooth enough and unable to maintain stable tension. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a five-roller tension machine, which is provided with an auxiliary roller assembly, and can increase the friction between the strip and the roller surface, so as to prevent the strip from slipping with the roller surface during the feeding process.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A five-roller tension machine comprises a frame, a plurality of tensioning rollers and a plurality of pressing rollers, wherein the frame comprises two parallel side vertical plates, the two ends of the tensioning roller are connected to the two side vertical plates respectively through bearings, the pressing roller is located above the tensioning roller, and the two ends of the pressing roller are connected to movable support seats through bearings, and the movable support seats are vertically slidably connected to the side vertical plates; the machine also comprises an auxiliary roller assembly, which is located between the feeding ends of the two side vertical plates, and the auxiliary roller assembly comprises an L-shaped side plate, a rotating shaft, a pressing shaft and an auxiliary roller, wherein two L-shaped side plates are provided, and the two L-shaped side plates are respectively and parallelly arranged on the inner sides of the two side vertical plates, The two ends of the rotating shaft pass through the middle of the two L-shaped side panels and the two side vertical panels respectively, and the rotating shaft is connected to the middle of the L-shaped side panels through bearings, the two ends of the pressing shaft pass through the front ends of the two L-shaped side panels respectively, and the two ends of the pressing shaft are connected to the first cylinder joints through bearings, the first cylinder joints are connected to a feed cylinder rotatably arranged on the top of the side vertical panels, the two ends of the auxiliary roller are respectively connected to the rear ends of the two L-shaped side panels through bearings, the auxiliary roller is arranged parallel to and above the sheeting roller at the feed end, a transmission assembly is provided between the auxiliary roller and the sheeting roller at the feed end, and the auxiliary roller and the sheeting roller at the feed end are connected through the transmission assembly.

[0007] In some embodiments, the auxiliary roller assembly further includes a feed ramp, which is fixedly connected between the two L-shaped side plates and is located at the front side of the rotating shaft.

[0008] In some embodiments, a feed top plate is fixedly connected between the tops of the feed ends of the two side vertical plates, and cylinder seats are installed at both ends of the feed top plate; the feed cylinder is rotatably connected to the cylinder seat through a bearing, and the output end of the feed cylinder is fixedly connected to the first cylinder joint.

[0009] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0010] The utility model provides an auxiliary roller assembly between the feeding ends of the two side vertical plates, the auxiliary roller assembly comprises an L-shaped side plate, a rotating shaft, a pressing shaft and an auxiliary roller, the auxiliary roller is arranged parallel to and above the stretching roller at the feeding end, and a transmission assembly is provided between the auxiliary roller and the stretching roller at the feeding end, the stretching roller at the feeding end transmits power to the auxiliary roller through the transmission assembly, thereby realizing the rotation of the auxiliary roller; the outer surface of the auxiliary roller is coated with rubber or other elastic materials, and in the process of strip feeding, the tension is transmitted and adjusted through the friction between the auxiliary roller and the surface of the strip, thereby preventing Prevent the strip from slipping against the roller surface, ensure the smooth operation of the strip, and maintain stable tension; the two ends of the rotating shaft pass through the middle part of the L-shaped side plate and the side vertical plate, and the rotating shaft is connected to the middle part of the L-shaped side plate through bearings, the two ends of the pressing shaft pass through the front end of the L-shaped side plate, and the two ends of the pressing shaft are connected to the first cylinder joint through bearings, the first cylinder joint is connected to the feed cylinder, and the output end of the feed cylinder pushes or pulls the pressing shaft through the first cylinder joint, thereby driving the L-shaped side plate to rotate around the rotating shaft, and the gap between the auxiliary roller and the feed end tensioning roller can be fine-tuned according to the specifications of the incoming strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0012] Figure 1 This is a schematic diagram of the structure of one embodiment of the utility model;

[0013] Figure 2 for Figure 1 A rear view of the embodiment without the side panels;

[0014] Figure 3 for Figure 1 A schematic structural diagram of an auxiliary roller assembly of an embodiment;

[0015] Figure 4 for Figure 1 A schematic structural diagram of a movable support seat according to an embodiment.

[0016] The numbers in the figure are: 1. frame; 11. side plate; 12. feed top plate; 2. stretching roller; 3. pressure roller; 4. movable support seat; 41. slider; 42. guide bar; 43. synchronous rack; 44. synchronous shaft; 441. synchronous gear; 5. auxiliary roller assembly; 51. L-shaped side plate; 52. rotating shaft; 53. pressure shaft; 54. auxiliary roller; 55. feed inclined plate; 6. first cylinder joint; 7. feed cylinder; 8. transmission assembly; 81. stretching roller gear; 82. idler gear; 83. rotating shaft gear; 84. rubber-coated roller gear; 9. displacement cylinder; 10. second cylinder joint; 20. slide; 30. square connecting plate; 40. cylinder seat; 50. lap plate. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or it can include the first and second features not being in direct contact but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] like Figures 1 to 3 As shown, in one embodiment of the five-roller tension machine of the utility model, the five-roller tension machine includes a frame 1, a plurality of tension building rollers 2, a plurality of pressure rollers 3 and an auxiliary roller assembly 5.

[0020] The frame 1 includes two side upright plates 11 arranged in parallel, and a plurality of square connecting plates 30 are fixedly connected between the upper parts and the lower parts of the two side upright plates 11 .

[0021] Both ends of the stretching roller 2 are connected to the two side plates 11 through bearings respectively. The pressure roller 3 is located above the stretching roller 2, and both ends of the pressure roller 3 are connected to the movable support seat 4 through bearings. The movable support seat 4 can be vertically slidably connected to the side plates 11.

[0022] The auxiliary roller assembly 5 is located between the feeding ends of the two side vertical plates 11. The auxiliary roller assembly 5 includes an L-shaped side plate 51, a rotating shaft 52, a pressing shaft 53, an auxiliary roller 54 and a feeding inclined plate 55. There are two L-shaped side plates 51. The two L-shaped side plates 51 are respectively arranged in parallel on the inner sides of the two side vertical plates 11. The two ends of the rotating shaft 52 pass through the middle of the two L-shaped side plates 51 and the two side vertical plates 11, and the rotating shaft 52 is connected to the middle of the L-shaped side plates 51 through a bearing. The two ends of the pressing shaft 53 pass through the front ends of the two L-shaped side plates 51, and the two ends of the pressing shaft 53 pass through the The bearing is connected with a first oil cylinder joint 6, which is connected with a feed oil cylinder 7 rotatably arranged on the top of the side vertical plate 11. The two ends of the auxiliary roller 54 are respectively connected with the rear ends of the two L-shaped side plates 51 through bearings. The auxiliary roller 54 is arranged parallel to the upper part of the sheet-building roller 2 at the feed end. A transmission assembly 8 is arranged between the auxiliary roller 54 and the sheet-building roller 2 at the feed end. The auxiliary roller 54 and the sheet-building roller 2 at the feed end are transmission-connected through the transmission assembly 8. The feed inclined plate 55 is fixedly connected between the two L-shaped side plates 51, and the feed inclined plate 55 is located in front of the rotating shaft 52. The auxiliary roller assembly 5 is located between the feed ends of the two side vertical plates 11. The outer surface of the auxiliary roller 54 is coated with rubber or other elastic materials. The tension is transmitted and adjusted by the friction between the auxiliary roller 54 and the surface of the strip, thereby preventing the strip from slipping with the roller surface and ensuring the smooth operation of the strip.

[0023] Furthermore, a feed top plate 12 is fixedly connected between the tops of the feed ends of the two side vertical plates 11, and a cylinder seat 40 is installed at both ends of the feed top plate 12; the feed cylinder 7 is rotatably connected to the cylinder seat 40 through a bearing, and the output end of the feed cylinder 7 is fixedly connected to the first cylinder joint 6. The output end of the feed cylinder 7 can perform reciprocating linear motion, and the output end of the feed cylinder 7 pushes or pulls the pressing shaft 53 through the first cylinder joint 6, thereby driving the L-shaped side plate 51 to rotate around the rotating shaft 52, so that the gap between the auxiliary roller 54 and the sheet-building roller 2 at the feed end can be finely adjusted.

[0024] Furthermore, the transmission assembly 8 includes a sheeting roller gear 81, an idler gear 82, a shaft gear 83 and a rubber-coated roller gear 84 that are meshed in sequence; one end of the sheeting roller 2, the shaft 52 and the auxiliary roller 54 is set as a power input end, and the power input end of the sheeting roller 2 is connected to a variable frequency speed-regulating gear reduction motor through a coupling, the sheeting roller gear 81 is coaxially connected to the power input end of the sheeting roller 2 at the feed end, and the shaft gear 83 is coaxially connected to the power input end of the shaft 52. The rubber-coated roller gear 84 is coaxially connected to the power input end of the auxiliary roller 54, and the idler gear 82 is arranged between the stretching roller gear 81 and the shaft gear 83. The stretching roller 2 at the feed end transmits power to the auxiliary roller 54 through the stretching roller gear 81, the idler gear 82, the shaft gear 83 and the rubber-coated roller gear 84, thereby realizing the rotation of the auxiliary roller 54. The auxiliary roller 54 cooperates with the stretching roller 2 at the feed end to increase the friction force on the strip and prevent the strip from slipping against the roller surface.

[0025] Furthermore, vertically arranged displacement cylinders 9 are installed on the tops of the two side panels 11 .

[0026] like Figure 4 As shown, a second oil cylinder joint 10 is installed on the top of the movable support seat 4, and the output end of the displacement oil cylinder 9 is fixedly connected to the second oil cylinder joint 10. A slide groove 20 is provided on the two side vertical plates 11 along the height direction; the movable support seat 4 includes a slider 41, two guide bars 42, two synchronous racks 43 and two synchronous shafts 44, the slider 41 is slidably connected to the slide groove 20, and a vertically arranged lap plate 50 is fixedly connected to the lower part of the slider 41, and the lap plate 50 is provided with a lap interface adapted to the lower edge of the connecting end of the pressure roller 3, the two guide bars 42 are parallelly fixed on the inner walls of the two sides of the slide groove 20, and the two synchronous racks 43 are parallelly fixed on the outer walls of the two sides of the slide groove 20, and the two ends of the two synchronous shafts 44 pass through two opposite sliders 41, and the two ends of the two synchronous shafts 44 are coaxially connected with synchronous gears 441, and the synchronous gears 441 at both ends of each synchronous shaft 44 are respectively meshed with the two synchronous racks 43 on the same side. Through the reciprocating linear motion of the output end of the displacement cylinder 9, the slider 41 can be driven to slide up and down along the slide groove 20, and the synchronous gear 441 can move up and down along the synchronous rack 43. The synchronous shaft 44 makes the two relatively arranged sliders 41 slide synchronously, thereby adjusting the pressing amount of the pressure roller 3 and the gap between the pressure roller 3 and the tensioning roller 2. The pressing amount can be adjusted according to the size specifications of the strip to ensure that the strip and the roller surface do not slip.

[0027] Optionally, three sheet building rollers 2 are provided, and two pressure rollers 3 are provided. The pressure rollers 3 are located above between the two sheet building rollers 2 , and the pressure rollers 3 are parallel to the axes of the sheet building rollers 2 .

[0028] The working principle of the five-roller tension machine is:

[0029] During operation, according to the size specifications of the incoming strip, the displacement cylinder 9 is debugged on site to adjust the pressing amount of the pressure roller 3 until the strip and the roller surface do not slip. When the pressure roller 3 is pressed down, it and the tension roller 2 are staggered to form a covering angle to generate friction. The greater the pressing amount of the pressure roller 3, the greater the covering angle formed, and the greater the contact area between the roller surface and the strip, thereby making the friction greater; conversely, the smaller the pressing amount of the pressure roller 3, the smaller the friction; an auxiliary roller assembly is set between the feeding ends of the two side vertical plates 11 5. The auxiliary roller 54 is used to increase the friction force on the strip during the strip feeding process to prevent the strip from slipping against the roller surface. A tension detector is set on one of the stretching rollers 2. It senses the tension through the friction between the stretching roller 2 and the strip, and feeds back the tension data signal to the variable frequency speed-regulating gear reduction motor at the power output end of the stretching roller 2. The variable frequency speed-regulating gear reduction motor adjusts the working parameters by itself, and the torque of the variable frequency speed-regulating gear reduction motor is less than the torque of the winding motor to prevent the strip from reversing. The five-roller tension machine has a compact structure and a small footprint. The pressing amount of the pressure roller 3 is adjustable, which is conducive to straightening and removing spots from the strip and is convenient for threading. In addition, by setting the auxiliary roller assembly 5, the auxiliary roller 54 is used to prevent slipping during the strip feeding process, ensure the stability of the strip tension, and enable the subsequent winding machine to neatly wind the strip.

[0030] It should be understood that all the above embodiments are illustrative rather than restrictive, and any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the conception of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A five-roller tension machine, comprising a frame (1), a plurality of tensioning rollers (2) and a plurality of pressure rollers (3), wherein the frame (1) comprises two side vertical plates (11) arranged in parallel, the two ends of the tensioning roller (2) are respectively connected to the two side vertical plates (11) through bearings, the pressure roller (3) is located above the tensioning roller (2), and the two ends of the pressure roller (3) are connected to a movable support seat (4) through bearings, and the movable support seat (4) can be vertically slidably connected to the side vertical plates (11); characterized in that: The invention also comprises an auxiliary roller assembly (5), wherein the auxiliary roller assembly (5) is located between the feeding ends of the two side vertical plates (11), and the auxiliary roller assembly (5) comprises an L-shaped side plate (51), a rotating shaft (52), a pressing shaft (53) and an auxiliary roller (54). The L-shaped side plates (51) are provided with two pieces, and the two L-shaped side plates (51) are respectively arranged in parallel on the inner sides of the two side vertical plates (11). The two ends of the rotating shaft (52) respectively pass through the middle parts of the two L-shaped side plates (51) and the two side vertical plates (11), and the rotating shaft (52) is connected to the middle part of the L-shaped side plates (51) through a bearing, and the two ends of the pressing shaft (53) respectively pass through the two L-shaped The front end of the side plate (51) and the two ends of the pressure shaft (53) are connected to a first cylinder joint (6) through bearings. The first cylinder joint (6) is connected to a feed cylinder (7) rotatably arranged on the top of the side vertical plate (11). The surface of the auxiliary roller (54) is rubber-coated. The two ends of the auxiliary roller (54) are respectively connected to the rear ends of the two L-shaped side plates (51) through bearings. The auxiliary roller (54) is arranged parallel to the top of the sheeting roller (2) at the feed end. A transmission component (8) is provided between the auxiliary roller (54) and the sheeting roller (2) at the feed end. The auxiliary roller (54) and the sheeting roller (2) at the feed end are connected through the transmission component (8).

2. The five-roller tension machine according to claim 1, characterized in that: The auxiliary roller assembly (5) further comprises a feed inclined plate (55), wherein the feed inclined plate (55) is fixedly connected between the two L-shaped side plates (51), and the feed inclined plate (55) is located in front of the rotating shaft (52).

3. The five-roller tension machine according to claim 1, characterized in that: A feed top plate (12) is fixedly connected between the tops of the feed ends of the two side vertical plates (11), and cylinder seats (40) are installed at both ends of the feed top plate (12); the feed cylinder (7) is rotatably connected to the cylinder seat (40) via a bearing, and the output end of the feed cylinder (7) is fixedly connected to the first cylinder joint (6).

4. The five-roller tension machine according to claim 1, characterized in that: The transmission assembly (8) comprises a sheet-building roller gear (81), an idler gear (82), a rotating shaft gear (83) and a rubber-coated roller gear (84) which are arranged in meshing relationship in sequence; one end of the sheet-building roller (2), the rotating shaft (52) and the auxiliary roller (54) is set as a power input end, and the power input end of the sheet-building roller (2) is connected to a variable frequency speed regulating gear reduction motor, the sheet-building roller gear (81) is coaxially connected to the power input end of the sheet-building roller (2) at the feeding end, the rotating shaft gear (83) is coaxially connected to the power input end of the rotating shaft (52), the rubber-coated roller gear (84) is coaxially connected to the power input end of the auxiliary roller (54), and the idler gear (82) is arranged between the sheet-building roller gear (81) and the rotating shaft gear (83).

5. The five-roller tension machine according to claim 1, characterized in that: A vertically arranged displacement cylinder (9) is installed on the top of the two side panels (11); a second cylinder joint (10) is installed on the top of the movable support seat (4), and the output end of the displacement cylinder (9) is fixedly connected to the second cylinder joint (10).

6. The five-roller tension machine according to claim 5, characterized in that: The two side vertical plates (11) are provided with a slide groove (20) along the height direction; the movable support seat (4) comprises a slider (41), two guide bars (42), two synchronous racks (43) and two synchronous shafts (44); the slider (41) is slidably connected with the slide groove (20); the two guide bars (42) are fixed in parallel on the inner walls of the slide groove (20) on both sides; the two synchronous racks (43) are fixed in parallel on the outer walls of the slide groove (20) on both sides; the two ends of the two synchronous shafts (44) pass through two opposite sliders (41); the two ends of the two synchronous shafts (44) are coaxially connected with synchronous gears (441); the synchronous gears (441) at both ends of each synchronous shaft (44) are respectively meshed with the two synchronous racks (43) on the same side.

7. The five-roller tension machine according to claim 6, characterized in that: A vertically arranged overlapping plate (50) is fixedly connected to the lower part of the sliding block (41), and an overlapping interface adapted to the lower edge of the connecting end of the pressing roller (3) is provided on the overlapping plate (50).

8. The five-roller tension machine according to claim 1, characterized in that: The sheet-building rollers (2) are provided with three rows, and the pressure rollers (3) are provided with two rows. The pressure rollers (3) are located above the sheet-building rollers (2) in pairs, and the pressure rollers (3) are parallel to the axes of the sheet-building rollers (2).

9. The five-roller tension machine according to claim 1, characterized in that: A plurality of square connecting plates (30) are fixedly connected between the upper parts and the lower parts of the two side upright plates (11).

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