Unreeling machine capable of adjusting tension of coil stock in real time

Abstract

The utility model provides an unreeling machine capable of adjusting the tension of a coiled material in real time, which is characterized in that a programmable logic controller (PLC) controls and sets the rotating speed and the torque output by a servo motor to an air expansion shaft and a material reel through programming, and feeds back the rotating speed and the torque to the PLC; the PLC calculates the linear speed completed when the material reel is full and materials are consumed at any time and converts the linear speed into the rotating speed, the lifting cylinders are installed on the two sides of the upper end of the frame respectively, the lifting arms are installed on the front sections of extension rods of the lifting cylinders, and one ends of the lifting arms are installed on the frame. The material loosening caused by free material unwinding during shutdown due to inertia is avoided, the machine adjusting time is greatly saved, the production speed is increased, the problem of material breakage is avoided, material waste is avoided, meanwhile, shutdown due to material breakage is avoided, the time is saved, and the production cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of unwinding machine equipment, in particular to an unwinding machine capable of adjusting the tension of a coil in real time. Background Art

[0002] When producing rolled materials, the reel needs to rotate to unwind the material, such as paper rolls and plastic film rolls. The full roll of material is heavy and has a large rotational inertia, so the rotational torque required for starting and stopping is large. As the production is consumed, the smaller the material roll is, the smaller the rotational inertia is, and the rotational torque required for starting and stopping becomes smaller. In production, it is necessary to ensure sufficient torque to start and stop the unwinding of the roll material, and to ensure that the material has a certain tension in the production process so that the material is in a uniform and taut state. The existing unwinding mechanism is a magnetic powder brake structure, which uses a magnetic powder brake as the power connection of the unwinding shaft and manually adjusts the tension of the unwinding shaft. During the production process, it is necessary to adjust repeatedly according to actual conditions and experience, which takes up manpower. If the adjustment is not timely, the material will deviate, or even break and cause shutdown. When the back-end production line is adjusted in speed, since the tension cannot be adjusted in real time, when decelerating, the unwinding reel exceeds the production speed due to inertia, and the material will loosen and fall to the ground or deviate, etc.; when accelerating, the unwinding reel lags behind, which will cause excessive material tension and material breakage. Summary of the invention

[0003] In order to solve the above problems, the utility model provides an unwinding machine for adjusting the tension of a coil in real time, which has a reasonable structure and solves the above problems.

[0004] The technical solution of the utility model is: to provide an unwinding machine for adjusting the tension of a coil in real time, comprising a frame, a lifting cylinder, a material reel, a servo motor, a lifting arm, an air shaft, and a programmable controller PLC. The programmable controller PLC sets the speed and torque output by the servo motor to the air shaft and the material reel through programming control, and feeds back to the programmable controller PLC. The programmable controller PLC calculates the linear speed of the full shaft of the material reel and the material consumption at any time and converts it into a speed. Lifting cylinders are respectively installed on both sides of the upper end of the frame, and lifting arms are installed at the front section of the extension rod of the lifting cylinder, and one end of the lifting arm is installed on the frame;

[0005] Optionally, a shaft frame is installed on the frame, the upper end of the shaft frame supports the inflatable shaft, and the inflatable shaft is connected to the material reel to form a material unwinding reel;

[0006] Optionally, a servo motor is installed on the frame, and the servo motor is connected to the air shaft through a fixed coupling and fixed and locked by a coupling top screw;

[0007] Optionally, a forward and backward hand wheel is provided at the lower end of the servo motor;

[0008] Optionally, a cylinder control valve is provided on the lifting cylinder;

[0009] Optionally, the unloading reel is controlled by a manually operated cylinder control valve, the unloading reel is lifted by a lifting arm driven by a lifting cylinder, and rolls to the shaft frame position, the advance and retreat hand wheel drives the servo motor to complete the axial engagement with the air shaft, and is connected to the air shaft through a fixed coupling, and is fixed and locked by a coupling top screw;

[0010] Optionally, an advance and retreat plate is provided at the lower end of the servo motor, and a slider is provided on the lower plane of the advance and retreat plate;

[0011] Optionally, a screw rod is provided on the frame;

[0012] Optionally, the advance and retreat plate is connected to the frame through a slider and a screw is used as a transmission method. The screw is driven to rotate by an advance and retreat handwheel, so that the advance and retreat plate slides on the frame through the slider, and the advance and retreat handwheel drives the servo motor and the air shaft to complete axial separation and engagement;

[0013] Compared with the prior art, the utility model has the following beneficial effects: reasonable structure, fully automatic completion of the process from full roll to production consumption until the roll is completely consumed, always maintaining a stable unwinding tension, so that the material is in a uniformly tightened state. There is also enough torque to overcome the influence of inertia when the full roll material is started and stopped. There will be no material breakage caused by the mismatch of the front and rear tensions, and the material can be prevented from being loosened due to the free unwinding of the material during shutdown due to inertia. It greatly saves the machine adjustment time, improves the production speed, has no material breakage problem, eliminates material waste, and avoids material breakage shutdown, saves time, and greatly reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below according to the figure:

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a structural diagram of the utility model;

[0017] Figure 3 It is an exploded structural diagram of the utility model;

[0018] Figure 4 It is a structural diagram of the utility model;

[0019] Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown in the figure: frame 1, lifting cylinder 2, cylinder control valve 3, material reel 4, servo motor 5, advance and retreat hand wheel 6, lifting arm 7, air shaft 8, shaft frame 9, coupling 10, coupling top screw 11, advance and retreat plate 12, slider 13, screw rod 14. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the drawings. It should be noted that the drawings are only used to explain the present invention and are schematic illustrations of embodiments of the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be noted that the terms "connected" and "connection" 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 a laser welding connection; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the unwinding machine for adjusting the tension of the coiled material in real time comprises a frame 1, a lifting cylinder 2, a material reel 4, a servo motor 5, a lifting arm 7, an air shaft 8, and a programmable controller PLC. The programmable controller PLC sets the speed and torque output by the servo motor 5 to the air shaft 8 and the material reel 4 through programming control, and feeds back to the programmable controller PLC. The programmable controller PLC calculates the linear speed of the material reel 4 when the material is fully loaded and consumed at any time and converts it into a speed. Lifting cylinders 2 are respectively installed on both sides of the upper end of the frame 1, and lifting arms 7 are installed at the front section of the extension rod of the lifting cylinder 2, and one end of the lifting arm 7 is installed on the frame 1.

[0023] Optionally, a shaft frame 9 is installed on the frame 1, and the upper end of the shaft frame 9 supports the inflatable shaft 8, and the inflatable shaft 8 is connected to the material reel 4 to form a material unwinding reel;

[0024] Optionally, a servo motor 5 is installed on the frame 1, and the servo motor 5 is connected to the air shaft 8 through a fixed coupling 10 and fixed and locked by a coupling top screw 11;

[0025] Optionally, a forward and backward hand wheel 6 is provided at the lower end of the servo motor 5;

[0026] Optionally, a cylinder control valve 3 is provided on the lifting cylinder 2;

[0027] Optionally, the unloading reel is manually operated through the cylinder control valve 3, the unloading reel is lifted by the lifting cylinder 2 to drive the lifting arm 7, and rolls to the position of the shaft frame 9, the advance and retreat hand wheel 6 drives the servo motor 5 to complete the axial engagement with the air shaft 8, and is connected to the air shaft 8 through the fixed coupling 10, and is fixed and locked by the coupling top screw 11;

[0028] Optionally, a forward and backward plate 12 is provided at the lower end of the servo motor 5, and a slider 13 is provided on the lower plane of the forward and backward plate 12;

[0029] Optionally, a screw rod 14 is provided on the frame 1;

[0030] Optionally, the advance and retreat plate 12 is connected to the frame 1 through a slider 13 and a screw 14 is used as a transmission method. The screw 14 is driven to rotate by the advance and retreat handwheel 6, so that the advance and retreat plate 12 slides on the frame 1 through the slider 13, and the advance and retreat handwheel 6 drives the servo motor 5 and the air shaft 8 to complete axial separation and engagement;

[0031] Example

[0032] When in use, the upper end of the shaft frame 9 on the frame 1 holds the inflatable shaft 8, and the inflatable shaft 8 is connected to the material reel 4 to form a discharge reel; the discharge reel is lifted by the lifting arm 7 driven by the lifting cylinder 2, and rolls to the position of the shaft frame 9, and the advance and retreat hand wheel 6 drives the servo motor 5 to complete the axial engagement with the inflatable shaft 8, and is connected to the inflatable shaft 8 through the fixed coupling 10, and is fixed and locked by the coupling top screw 11;

[0033] The programmable controller PLC can be programmed to control the speed and torque output by the servo motor 5 when the pneumatic shaft 8 and the material reel 4 are connected to form a discharge reel. The linear speed of the whole machine is fed back to the PLC, and the PLC automatically calculates the linear speed of the full shaft and the material consumption at any time and converts it into a rotation speed. The speed and tension adjustment of the material requirements can be adjusted in real time to avoid problems such as sudden speed increase or decrease or shutdown of the material being too loose or too tight. It can be installed once and no management is required.

[0034] Through the servo motor 5 torque setting, real-time adjustment. When the whole machine is running, it is not affected by the overall running speed. The machine can run fast or slow at will, and the unwinding reel automatically adjusts the torque and tension without manual intervention, avoiding problems such as material deviation, looseness, over-tightening, and breakage. It saves manpower, reduces waste, and greatly improves production efficiency.

[0035] The utility model has a reasonable structure, and can automatically complete the process from full roll to production consumption until the roll is consumed, and always maintain a stable unwinding tension, so that the material is in a uniformly tightened state. There is also enough torque to overcome the influence of inertia when the full roll material is started and stopped. There will be no material breakage caused by mismatched front and rear tensions, and the free unwinding of the material during shutdown due to inertia will be avoided, causing the material to relax. It greatly saves the machine adjustment time, improves the production speed, and there is no problem of material breakage. It eliminates the waste of materials and avoids the shutdown due to material breakage, saving time and greatly reducing production costs.

[0036] The above is an embodiment of the utility model and is not intended to limit the present invention. For those skilled in the art, the utility model may have various improvements and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of the claims of the utility model.

Claims

1. Unwinding machine with real-time tension adjustment of coiled material, characterized by: The invention comprises a frame (1), a lifting cylinder (2), a material reel (4), a servo motor (5), a lifting arm (7), an air shaft (8), and a programmable controller (PLC). The programmable controller (PLC) sets the rotation speed and torque output by the servo motor (5) to the air shaft (8) and the material reel (4) through programming control, and feeds back to the programmable controller (PLC). The programmable controller (PLC) calculates the linear speed of the material reel (4) when the material is fully loaded and when the material is consumed at any time, and converts the speed into a rotation speed. The lifting cylinders (2) are respectively installed on both sides of the upper end of the frame (1). The front section of the extension rod of the lifting cylinder (2) is installed with a lifting arm (7), and one end of the lifting arm (7) is installed on the frame (1).

2. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: The frame (1) is provided with a shaft frame (9), the upper end of which supports an inflatable shaft (8), and the inflatable shaft (8) is connected to a material reel (4) to form a material unwinding reel.

3. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: A servo motor (5) is installed on the frame (1), and the servo motor (5) is connected to the air shaft (8) via a fixed coupling (10) and is fixed and locked by a coupling top screw (11).

4. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: The lower end of the servo motor (5) is provided with an advance and retreat hand wheel (6).

5. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: The lifting cylinder (2) is provided with a cylinder control valve (3).

6. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 2, characterized in that: The unloading reel is controlled by a manually operated cylinder control valve (3), and the unloading reel is lifted by a lifting arm (7) driven by a lifting cylinder (2), and rolls to the position of a shaft frame (9), and the advance and retreat hand wheel (6) drives the servo motor (5) and the air shaft (8) to complete axial engagement, and is connected to the air shaft (8) through a fixed coupling (10), and is fixed and locked by a coupling top screw (11).

7. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: The lower end of the servo motor (5) is provided with an advance and retreat plate (12), and the lower plane of the advance and retreat plate (12) is provided with a sliding block (13).

8. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 1, characterized in that: A screw rod (14) is provided on the frame (1).

9. The unwinding machine for adjusting the tension of the coiled material in real time according to claim 7, characterized in that: The advance / retract plate (12) is connected to the frame (1) via a slider (13) and a screw rod (14) is used as a transmission method. The screw rod (14) is driven to rotate by an advance / retract hand wheel (6), so that the advance / retract plate (12) slides on the frame (1) via the slider (13). The advance / retract hand wheel (6) drives the servo motor (5) and the pneumatic shaft (8) to complete axial separation and engagement.

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