Transverse shear line unreeling machine

Abstract

The utility model discloses a cross cut line unreeling machine, which belongs to the technical field of steel production and comprises a machine frame and an energy releasing frame. The rack is used for unwinding a steel coil. A plurality of damping pieces are arranged in the energy releasing frame, and the releasing end of the steel coil movably penetrates through the energy releasing frame and makes contact with the damping pieces. When a steel coil is unwound, the front end of the steel coil firstly passes through the energy releasing frame, and the steel coil is in dynamic contact with the damping pieces in the energy releasing frame and then enters a cross cut line to be straightened, sheared and the like. And when the front-end silicon steel is dragged, the rear-end silicon steel is subjected to continuously controllable resistance from the damping piece in the energy release frame, so that the transition-section silicon steel generates tension. And by applying tension, the dragging force of the silicon steel is weakened, and the situation that an unwinding rotating shaft of the unwinding machine is fully dragged to rotate, and steel coils are released redundantly is avoided. Tension is applied through resistance, and the silicon steel can counteract inertia through the tension in a small wrap angle or no wrap angle state.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of steel production, and particularly relates to a transverse shearing line unwinding machine. BACKGROUND

[0002] Silicon steel sheet is a kind of soft magnetic material widely used in electrical equipment such as motors and transformers, and it usually needs to be slitted or cut by a transverse shearing line in the processing. In the transverse shearing line processing, the silicon steel coil is released from the unwinding machine, and after the processes such as straightening and cutting, the product of the required specification is formed.

[0003] The transverse shearing line processing is in an intermittent material dragging mode, and the silicon steel stops after being dragged for a certain distance and enters the cutting process. When the silicon steel is instantaneously stopped, the unwinding machine will continue to release the material due to the inertial effect, causing the silicon steel to continue to release after the material dragging stops, and further causing the transition part to sag and form a redundant section. This redundant section is easy to contact and rub with the ground, causing surface scratches and material waste, especially for silicon steel sheets with insulating coating, the scratches will seriously affect the electromagnetic performance consistency of the core after lamination.

[0004] The common treatment method for the sagging problem of the silicon steel during unwinding is to use a tension control structure to suppress the inertial release by increasing the brake angle and applying high tension, but the silicon steel sheet is sensitive to mechanical stress, and excessive tension and wrap angle will cause stress concentration in the silicon steel, damage the magnetic domain structure and reduce the electromagnetic performance. Or use a servo motor to dynamically adjust the unwinding speed on the unwinding machine, which can improve the tension stability, but the system is complex and the cost is high, and no protection design is made for the stress sensitivity of the silicon steel. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a transverse shearing line unwinding machine to solve the problems in the prior art.

[0006] A transverse shearing line unwinding machine is provided, comprising:

[0007] A rack for unwinding a steel coil;

[0008] A release frame is provided with a plurality of damping members, and the release end of the steel coil is movably penetrated through the release frame and in contact with the plurality of damping members.

[0009] Further, two oppositely arranged damping members form a clamping part, and a plurality of clamping parts are arranged along the length direction of the release frame. The segmented damping control is formed by a plurality of symmetrically distributed clamping parts, the contact pressure of the silicon steel is uniformly dispersed, the local stress concentration is avoided, and the coating scratch of the silicon steel surface caused by excessive single-point pressure is reduced.

[0010] Further, the damping member is a rotating roller connected to the inside of the energy releasing frame. The sliding friction is converted into rolling friction, and the tension size is controlled by controlling the rotating speed of the rotating roller.

[0011] Further, the damping member is made of flexible material. The flexible material can reduce the risk of mechanical damage to the surface of the silicon steel when the damping member rubs against the surface of the silicon steel, and the elastic restoring force generated by deformation provides uniform contact pressure.

[0012] Further, a driving assembly is arranged between the energy releasing frame and the rack, and the energy releasing frame can rotate relative to the rack through the driving assembly. By adjusting the angle of the energy releasing frame through the driving assembly, the output direction of the silicon steel from the energy releasing frame to the next process of the transverse shearing line and the wrap angle of the silicon steel can be controlled, and the working conditions of different models of silicon steel can be adapted.

[0013] Further, the driving assembly includes an actuator, a rotating shaft, and a transmission arm, one end of the rotating shaft is fixedly connected with the energy releasing frame and the other end is rotatably connected in a bearing seat, and the actuator transmits torque to the rotating shaft through the transmission arm. The actuator drives the transmission arm to rotate, and the transmission arm converts the rotary motion into torque to drive the rotating shaft to rotate and drive the energy releasing frame to rotate, so that the angle of the energy releasing frame is accurately controlled and the acting force is borne.

[0014] Further, the rack is provided with a supporting frame at the lower part of the steel coil. The supporting frame is used to support the slack and sagging part that may be generated due to excessive rotation of the steel coil.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] When the front end of the steel coil passes through the energy releasing frame during uncoiling, the steel coil is in dynamic contact with the damping members inside the energy releasing frame, and then enters the transverse shearing line for straightening, shearing and other processes. When the front end of the silicon steel is dragged, the rear end of the silicon steel is subjected to a continuous and controllable resistance from the damping members inside the energy releasing frame, so that the transition section of the silicon steel generates tension. By applying tension, the dragging force of the silicon steel is weakened, avoiding the full traction rotation of the uncoiling shaft of the uncoiler, so that the redundant release of the steel coil is avoided. By applying resistance to generate tension, the silicon steel can utilize the tension to offset inertia in a small wrap angle or no wrap angle state. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the drawings, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0018] Fig. 1It is a schematic diagram of the overall structure of a cross-cutting line unwinder A;

[0019] Fig. 2 It is a schematic diagram of the overall structure of a cross-cutting line unwinder B.

[0020] In the figure: 1, rack; 2, energy release frame; 21, damping member; 3, drive assembly; 31, actuator; 32, rotating shaft; 33, transmission arm; 4, support frame. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is described and explained below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. Based on the examples provided in the present application, all other examples obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application.

[0022] Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those of ordinary skill in the art, the present application can be applied to other similar scenarios without making creative efforts based on these drawings. In addition, it can be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacture or production changes based on the technical content disclosed in the present application are only routine technical means and should not be understood as insufficient disclosure of the content disclosed in the present application.

[0023] However, there will be cases of omission of unnecessary detailed description. For example, there are cases of omission of detailed description of well-known matters, repeated description of practically identical structures. This is to avoid the following description from becoming unnecessarily lengthy and to facilitate understanding by those skilled in the art. In addition, the drawings and the following description are provided to enable those skilled in the art to fully understand the present application and are not intended to limit the subject matter recited in the claims.

[0024] Please refer to Figs. 1-2 As shown, the cross-cutting line unwinder in the embodiment of the present application comprises a rack 1 and an energy release frame 2. The rack 1 is used for unwinding a steel coil. A plurality of damping members 21 are arranged in the energy release frame 2, and the release end of the steel coil is movably penetrated through the energy release frame 2 and in contact with the plurality of damping members 21.

[0025] The steel coil is placed on the rack 1, and the silicon steel front end passes through the damping member 21 in the energy release frame 2 and enters the cross-cutting line straightening process. When the cross-cutting line drags the silicon steel sheet, the damping member 21 contacts the surface of the silicon steel, and a sustained resistance is formed through friction or rolling resistance. Before the cross-cutting line stops dragging, the rotation speed of the unwinding machine is inhibited, and the resistance of the damping member 21 offsets the inertia of the unwinding machine, improves the redundant release of the steel coil, and avoids surface wear caused by contact between the silicon steel and the ground. The contact resistance between the damping member 21 and the surface of the silicon steel forms a passive tension, which replaces the traditional active tension control through large-angle winding rollers.

[0026] Two oppositely arranged damping members 21 form a clamping part, and a plurality of clamping parts are arranged along the length direction of the energy release frame 2. When the silicon steel passes through the energy release frame 1, a plurality of clamping parts symmetrically clamp from both sides of the silicon steel. The two damping members 21 of each clamping part exert opposite contact forces, so that the pressure is uniformly distributed along the length direction of the silicon steel. The symmetrical distribution forms a segmented damping control, uniformly disperses the contact pressure received by the silicon steel, avoids local stress concentration, and reduces the scratch of the coating on the surface of the silicon steel caused by excessive single-point pressure.

[0027] In one embodiment, the damping member 21 is a rotating roller connected to the inside of the energy release frame 2. A motor is arranged on the energy release frame 2, and a plurality of rotating rollers are driven to rotate through a belt synchronous wheel assembly. Compared with the passive resistance generated by the clamping and extrusion of the cushion layer, the rotation of the rotating roller generates resistance on the surface of the silicon steel, and the resistance can be controlled by controlling the rotating speed of the rotating roller.

[0028] The damping member 21 is made of flexible material, such as polyurethane, rubber, and silicone. When the flexible damping member 21 contacts the silicon steel, it deforms to form an adaptive pressure. The elastic restoring force generated by the deformation provides uniform contact pressure. In addition, the flexible material can absorb the instantaneous impact when the cross-cutting line starts and stops dragging.

[0029] A driving assembly 3 is arranged between the energy release frame 2 and the rack 1, and the energy release frame 2 can rotate relative to the rack 1 through the driving assembly 3. Different delivery angles of different energy release frames 2 can be adjusted to form a certain wrap angle between the silicon steel and the end damping member 21 without affecting the internal magnetic domain structure of the silicon steel, thereby enhancing the tension forming effect. Adjusting the output angle of the energy release frame 2 can also adapt to different types of straightening equipment, which is conducive to the stable entry of the silicon steel into the straightening and cutting process. In addition, when the equipment is stopped and moved, the energy release frame 2 is rotated as a whole into the coverage range of the unwinding machine, which can save space and facilitate transportation.

[0030] Specifically, the driving assembly 3 comprises an actuator 31, a rotating shaft 32 and a transmission arm 33. The actuator 31 can be a pneumatic cylinder, a hydraulic cylinder or the like, and is hingedly connected to the frame 1 and the transmission arm 33 at two ends. When the piston rod of the actuator 31 is extended, the rotating shaft 32 is limited by the bearing seats at two ends and only has a rotational degree of freedom. The actuator 31 drives the transmission arm 33 to rotate around the axis of the rotating shaft 32. The transmission arm 33 transmits the torque to the rotating shaft 32 to make the rotating shaft 32 rotate, and the rotating shaft 32 further drives the energy releasing frame 2 to rotate as a whole.

[0031] The frame 1 is provided with a supporting frame 4 at the lower part of the steel coil. The supporting frame 4 supports the redundant part of the steel coil after the redundant length is released, so as to limit the silicon steel from further falling and contacting the ground. The supporting frame 4 can be composed of supporting rollers and supporting plates. The supporting plates are used to expand the supporting surface, and the supporting rollers are arranged between two adjacent supporting plates. When the silicon steel slides on the supporting frame 4, the rolling friction is used to reduce the frictional resistance.

[0032] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and embodiments having the same technical idea and playing the same role and effect within the scope of the technical solutions of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications of the embodiments that can be thought of by those skilled in the art, and other ways constructed by combining part of the constituent elements of the embodiments are also included in the scope of the present application.

Claims

1. A decatting machine for a transversal cutting line, characterized in that, The utility model relates to a steel coil releasing device, which comprises a rack (1) for steel coil unwinding, a releasing rack (2) provided with a plurality of damping members (21) inside, a releasing end of the steel coil being movably penetrated through the releasing rack (2) and being in contact with the damping members (21). Two oppositely arranged damping members (21) form a clamping part, and a plurality of clamping parts are arranged along the length direction of the releasing rack (2). The damping member (21) is a rotating roller rotatably connected to the inside of the releasing rack (2).

2. A decatting machine for a transversal cutting line as claimed in claim 1, characterized in that The damping member (21) is made of flexible material.

3. A decatting machine for a transversal cutting line as claimed in claim 2, characterized in that A driving assembly (3) is arranged between the releasing rack (2) and the rack (1), and the releasing rack (2) can rotate relative to the rack (1) through the driving assembly (3).

4. A decatting machine for a transversal cutting line as claimed in claim 1, characterized in that The driving assembly (3) comprises an actuator (31), a rotating shaft (32) and a transmission arm (33), one end of the rotating shaft (32) is fixedly connected to the releasing rack (2) and the other end is rotatably connected to a bearing seat, and the actuator (31) transmits torque to the rotating shaft (32) through the transmission arm (33).

5. A decatting machine for a transversal cutting line as claimed in claim 1, characterized in that, The rack (1) is provided with a supporting rack (4) at the lower part of the steel coil.

6. A decatting machine for a transversal cutting line as claimed in claim 5, characterized in that ​ 7. A decatting machine for a transversal cutting line as claimed in claim 1, characterized in that, ​

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