An improved steel belt pressure roller device and tensioning machine

Abstract

The utility model belongs to the technical field of uncoilers, and specifically relates to an improved steel strip pressure roller device and tensioner, the device comprising a support seat, a hydraulic cylinder and a swing arm, the outer upper end of the swing arm is fixed with a bearing and is rotatably connected with a pressure roller through the bearing, the length of the pressure roller is much smaller than the width of the steel strip, a synchronous shaft fixed on the support seat is arranged parallel to the lower side of the pressure roller, the end of the synchronous shaft is rotatably connected with the swing arm through the support seat, and the swing arm swings on the outer side wall of the support seat through the synchronous shaft and the hydraulic cylinder. The utility model solves the possibility of deformation of the pressure roller due to excessive pressure, improves the service life of the pressure roller, and also solves the problem of fatigue fracture caused by vibration of the deformed pressure roller, ensures the safety of unwinding the thick steel strip, and also ensures the parallelism between the pressure roller and the steel roller, further improves the uneven pressure of the thick steel strip, and reduces the deviation phenomenon.

Description

Technical Field

[0001] The utility model belongs to the technical field of uncoilers, and in particular relates to an improved steel belt pressure roller device and a tensioning machine. Background Art

[0002] The uncoiler is a special equipment for leveling metal plates. It is used to level steel plates and uneven plates. According to the relevant configuration, it can form an uncoiler, leveling, shearing production line and other plate product production lines. During the operation of the uncoiler, its reel usually forms a tensioning force with the tensioner. Although it can ensure the smooth transportation of the steel strip, the steel strip between the uncoiler and the tensioner is very easy to break and cannot be tensioned during the process of connecting and cutting the strip head. Therefore, the steel strip needs to be pressed by the pressure roller on the tensioner to ensure that the steel strip in front of the tensioner can be stopped and the steel strip behind the tensioner will not loosen or deviate. At present, the driven pressure roller is used to apply pressure to the steel coil through the hydraulic cylinder drive. This type of pressure roller setting is difficult to ensure the smooth threading of the steel strip, and it is very easy to cause sliding between layers of the steel strip and friction marks due to loose coiling during the uncoiling process.

[0003] There are studies in the prior art on the problems caused by applying pressure to steel coils by driven rollers through hydraulic cylinders, such as patent application CN209156754U - a double roller device for an unwinder, which connects a rotating drive device to the power end of the upper roller to make the upper roller an active roller, providing sufficient power for the threading of the strip, solving the problems of loose steel coils and friction marks caused by applying pressure to steel coils by driven rollers through hydraulic cylinders. However, the existing roller device only ensures the pressure of thinner steel strips, but for thick steel strips, it is very easy to cause the roller to deform due to excessive pressure, thereby affecting the uniformity of the force on the steel strip and eventually causing deviation. Therefore, a new technical solution is needed to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide an improved steel belt pressure roller device and tensioner to solve the problem proposed in the above background technology that the pressure roller of the current pressure roller device is very easy to deform when applying pressure to the thick steel belt, thereby affecting the uniformity of the force applied to the steel belt and eventually causing deviation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved steel strip pressure roller device, comprising a support seat, a hydraulic cylinder fixed to the side of the support seat and a swing arm fixed to the movable end of the hydraulic cylinder, a bearing is fixed to the outer upper end of the swing arm and a pressure roller is rotatably connected through the bearing, the length of the pressure roller is much smaller than the width of the steel strip, a synchronous shaft fixed to the support seat is arranged parallel to the lower side of the pressure roller, the end of the synchronous shaft is rotatably connected to the swing arm through the support seat, and the swing arm swings on the outer wall of the support seat through the synchronous shaft and the hydraulic cylinder.

[0006] Furthermore, the bottom end of the synchronization shaft is fixed in the top groove of the support seat, the end of the synchronization shaft passes from the inner middle part of the swing arm to the outer middle part of the swing arm and is rotationally connected to the swing arm and is simultaneously set with a pin shaft fixed to the outer middle part of the swing arm. The swing arm rotates around the arc of the synchronization shaft on the outer side wall of the support seat through a hydraulic cylinder and a connecting rib plate is fixed to the upper side thereof.

[0007] Furthermore, the end of the pressure roller passes from the inner upper end of the swing arm to the outer upper end of the swing arm and is rotatably connected to the bearing sleeve; a connecting head is horizontally fixed to the outer lower end of the swing arm and is fixedly connected to the piston rod end of the hydraulic cylinder through the connecting head.

[0008] Furthermore, one end of the connecting head is horizontally fixed to the outer lower end of the swing arm, and the other end of the connecting head is horizontally fixed to the piston rod end of the hydraulic cylinder; the cylinder body of the hydraulic cylinder is horizontally arranged relative to the support seat and a support is fixed at its bottom, the support is fixed to the side of the support seat, and the bottom of the support seat is fixedly connected to a base.

[0009] In addition to the above technical solutions, there is also a tensioning machine with the improved steel belt pressure roller device.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model adopts a pressure roller whose length is much smaller than the width of the steel strip, so that the thick steel strip can not only be closely attached to the steel roller under the pressure of the short pressure roller, but also avoid the possibility of deformation of the long pressure roller due to excessive pressure, so that the thick steel strip is subjected to more uniform force under the pressure of the short pressure roller, effectively improving the service life of the pressure roller, and at the same time solving the problem of fatigue fracture caused by vibration of the deformed pressure roller, ensuring the safety of unwinding the thick steel strip, and effectively enhancing the strength of the support seat by arranging a full-length synchronous shaft fixed on the support seat, so that the downward force condition of the support seat is effectively improved, so that the swing arm can more easily control the pressure roller to be close to the steel roller under the support of the support seat, effectively improving the stability of the pressure of the pressure roller, and then the synchronous shaft and the swing arm are supported and rotated by the support seat, so that the swing arm can more easily control the parallelism of the pressure roller and the steel roller under the support and rotation of the synchronous shaft, further improving the uneven pressure of the thick steel strip, effectively reducing the deviation phenomenon, and improving the tension of the thick steel strip, thereby ensuring the effect and efficiency of unwinding the thick steel strip;

[0012] 2. The utility model adopts a synchronous shaft and a pin shaft set, so that the swing arm can smoothly drive the pressure roller to move in an arc around the synchronous shaft under the drive of the hydraulic cylinder, so that the parallelism between the pressure roller and the steel roller is effectively improved, the uniformity of the force on the thick steel strip is effectively improved, the deviation phenomenon is effectively reduced, and the tension of the thick steel strip is improved, thereby ensuring the effect and efficiency of the thick steel strip unwinding;

[0013] 3. The utility model effectively improves the downward force condition of the support seat by fixing the synchronous shaft in the groove of the support seat, effectively enhances the strength of the support seat, so that the swing arm can more easily control the pressure roller to be close to the steel roller under the support and rotation of the synchronous shaft, and effectively improves the stability of the pressure of the pressure roller;

[0014] 4. The utility model adopts the setting of fixing the connecting rib plate between the two swing arms, so that the swing arm is more stable and reliable under the drive of the hydraulic cylinder. By setting a fixed base at the bottom of the support seat, the strength of the support seat is greatly improved, which effectively improves the stability of the swing arm and the close contact between the pressure roller and the steel roller, thereby ensuring the tension of the thick steel belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the uncoiler of the utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure of the steel strip pressure roller device;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the middle pressure roller;

[0018] Figure 4 for Figure 2 A schematic diagram of the structure of the middle support seat;

[0019] Figure 5 for Figure 2 A schematic diagram of the side structure of

[0020] Figure 6 for Figure 5 Schematic diagram of the structure of the middle swing arm.

[0021] Among them: 1. Support seat; 2. Hydraulic cylinder; 3. Swing arm; 4. Pressure roller; 5. Bearing; 6. Synchronous shaft; 7. Pin shaft; 8. Connecting rib plate; 9. Connecting head; 10. Support; 11. Base; 12. Steel roller; 13. Tensioner. DETAILED DESCRIPTION

[0022] The following examples are used to further illustrate the content of the utility model, but do not limit the application of the utility model. Embodiment 1:

[0023] See also Figure 1-Figure 6An improved steel strip pressure roller device comprises two support seats 1 for supporting, two hydraulic cylinders 2 respectively fixed to the sides of the two support seats 1 and used to provide driving force, and two swing arms 3 respectively fixed to the movable ends of the two hydraulic cylinders 2 and used to drive the pressure roller 4 to move, the upper ends of the outer sides of the two swing arms 3 are each fixed with a bearing 5 for driving the pressure roller 4 to rotate, and a pressure roller 4 for applying pressure to the steel strip is rotatably connected through the bearing 5, the pressure roller 4 is rotatably mounted between the inner sides of the upper ends of the two swing arms 3 through the bearing 5, the length of the pressure roller 4 is much smaller than the width of the steel strip, and a parallel position is arranged below the pressure roller 4 for cooperating with the swing arm 3 to control the pressure roller 4 to be parallel to the steel roller 12 The bottom of both ends of the synchronous shaft 6 are respectively fixed in the top grooves of the two support seats 1 by welding, and the ends thereof are respectively connected to the two swing arms 3 by supporting rotation through the two support seats 1. The two ends of the synchronous shaft 6 respectively pass from the inner middle part of the two swing arms 3 to the outer middle part of the two swing arms 3 and are respectively connected to the two swing arms 3 by rotation. The pin shaft 7 fixed to the outer middle part of the two swing arms 3 is respectively set with the two ends of the synchronous shaft 6. The two swing arms 3 are swung on the outer side walls of the two support seats 1 through the synchronous shaft 6 and the two hydraulic cylinders 2. A connecting rib plate 8 for strengthening the stability of the two swing arms 3 is fixed between the upper parts of the sides of the two swing arms 3.

[0024] See also Figure 1-Figure 3 and Figure 5 , the two ends of the pressure roller 4 respectively pass from the inner upper ends of the two swing arms 3 to the outer upper ends of the two swing arms 3 and are respectively connected to the two bearings 5 ​​in a sleeve-type rotation manner;

[0025] A connector 9 for connecting to the hydraulic cylinder 2 is horizontally fixed to the lower outer ends of the two swing arms 3, and the connectors 9 are respectively fixedly connected to the piston rod ends of the two hydraulic cylinders 2;

[0026] One end of the two connectors 9 is horizontally fixed to the lower ends of the outer sides of the two swing arms 3, and the other ends of the two connectors 9 are horizontally fixed to the ends of the piston rods of the two hydraulic cylinders 2;

[0027] The cylinder body of the hydraulic cylinder 2 is arranged horizontally relative to the support seat 1. A support 10 for supporting and fixing is fixed at the bottom of each hydraulic cylinder 2. The support 10 is fixed to the side of the support seat 1. The bottom of the support seat 1 is fixedly connected to a base 11 for fixing the support seat 1.

[0028] The working principle and use process of this embodiment are as follows: Figure 1-Figure 6As shown in the figure, after the steel strip pressure roller device is assembled, it is only necessary to install the steel strip pressure roller device as a whole beside the steel roller 12 of the uncoiler and cooperate with the tensioner 13. Since the thick steel strip (the thickness of the thick steel strip is 4-6mm) has strong rigidity and much greater yield strength than the thin steel strip, the tensioning force applied by the pressure roller 4 on the thick steel strip will be greater to ensure that the thick steel strip is tightly attached to the steel roller 12 without loosening. The length of the pressure roller 4 is set to be much smaller than the width of the steel strip in order to avoid the pressure roller 4 from being damaged due to excessive pressure. The possibility of deformation is reduced, so that the thick steel strip is subjected to more uniform force under the pressure of the pressure roller 4, thereby improving the service life of the pressure roller 4, and at the same time solving the problem of fatigue fracture caused by vibration of the deformed pressure roller 4, thereby ensuring the safety of unwinding the thick steel strip. At the same time, it makes it easier for the swing arm 3 to control the parallelism between the pressure roller 4 and the steel roller 12 under the support and rotation of the synchronous shaft 6, thereby further improving the uneven pressure of the thick steel strip, effectively reducing the deviation phenomenon, and improving the tension of the thick steel strip, thereby ensuring the effect and efficiency of unwinding the thick steel strip.

[0029] Since the hydraulic cylinder 2 is controlled by a controller or a control box (the functions and structures of conventional equipment such as a controller or a control box are well known in the art, and the connection settings are also common knowledge, so no further explanation is given here and it is not shown in the attached drawings), when the thick steel strip needs to be unrolled and tensioned, the operator only needs to control the piston rods of the two hydraulic cylinders 2 to extend simultaneously through the controller or the control box. At this time, the two swing arms 3 will drive the pressure rollers 4 to move in a positive arc around the synchronous shaft 6 under the extension of the piston rods of the hydraulic cylinders 2 until the pressure rollers 4 contact the thick steel strip fixed on the steel roller 12. At the same time, The pressure roller 4 will rotate with the rotation of the thick steel strip through the bearing 5. As the thickness of the thick steel strip is reduced due to unwinding, the operator will control the piston rod of the hydraulic cylinder 2 to slowly extend through the controller or control box to ensure that the pressure roller 4 can always apply pressure to the thick steel strip; after the unwinding of the thick steel strip is completed, the operator will control the piston rod of the hydraulic cylinder 2 to retract through the controller or control box. At this time, the two swing arms 3 will drive the pressure roller 4 to make a reverse arc movement around the synchronous shaft 6 under the retracted piston rod of the hydraulic cylinder 2 until the pressure roller 4 is in the initial state, preparing for the unwinding and tensioning of a roll of thick steel strip. Embodiment 2:

[0030] See also Figure 1-Figure 6 As another object of the utility model, a tensioning machine is provided, in which the above-mentioned improved steel belt pressure roller device is provided. Therefore, the tensioning machine can obtain any beneficial effect of the improved steel belt pressure roller device described above, which will not be repeated here.

Claims

1. An improved steel strip pressure roller device, comprising a support seat, a hydraulic cylinder fixed to the side of the support seat and a swing arm fixed to the movable end of the hydraulic cylinder, wherein a bearing is fixed to the outer upper end of the swing arm and a pressure roller is rotatably connected to the swing arm through the bearing, characterized in that: The length of the pressure roller is much smaller than the width of the steel belt. A synchronous shaft fixed on the support seat is arranged parallel to the lower side of the pressure roller. The end of the synchronous shaft is rotatably connected to the swing arm through the support seat. The swing arm swings on the outer wall of the support seat through the synchronous shaft and the hydraulic cylinder.

2. An improved steel belt pressing roller device according to claim 1, characterized in that: The end of the pressure roller passes from the inner upper end of the swing arm to the outer upper end of the swing arm and is rotatably connected with the bearing sleeve.

3. An improved steel belt pressing roller device according to claim 2, characterized in that: A connecting head is horizontally fixed to the outer lower end of the swing arm and is fixedly connected to the piston rod end of the hydraulic cylinder through the connecting head.

4. An improved steel belt pressing roller device according to claim 3, characterized in that: One end of the connecting head is horizontally fixed to the outer lower end of the swing arm, and the other end of the connecting head is horizontally fixed to the end of the piston rod of the hydraulic cylinder.

5. An improved steel belt pressing roller device according to claim 4, characterized in that: The cylinder body of the hydraulic cylinder is arranged horizontally relative to the support seat and a support is fixed at the bottom thereof, and the support is fixed to the side of the support seat.

6. An improved steel belt pressing roller device according to claim 1, characterized in that: The end of the synchronization shaft passes from the inner middle part of the swing arm to the outer middle part of the swing arm and is rotationally connected with the swing arm and is also set with a pin fixed to the outer middle part of the swing arm.

7. An improved steel belt pressing roller device according to claim 6, characterized in that: The end bottom of the synchronous shaft is fixed in the top groove of the supporting seat.

8. An improved steel belt pressing roller device according to claim 7, characterized in that: The swing arm is rotated on the outer side wall of the support seat around the arc of the synchronous axis through a hydraulic cylinder, and a connecting rib plate is fixed to the upper side of the swing arm.

9. An improved steel belt pressing roller device according to claim 8, characterized in that: The bottom of the support seat is fixedly connected with a base.

10. A tensioning machine, characterized in that: It comprises an improved steel strip pressing roller device as described in any one of claims 1-9.

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