Metal wire straightening device and straightening method

Abstract

The invention discloses a metal wire straightening device which sequentially comprises a pay-off module and a straightening module in the wiring direction of a metal wire, and the straightening module comprises a plurality of tower pulley sliding components which are sequentially arranged in the wiring direction of the metal wire. The tension of the metal wires is adjusted through the pay-off mechanism, meanwhile, the metal wires are straightened through cooperation with the rotating speed difference of the tower pulley sliding wiping mechanisms, the overall structure is simple, and damage to the metal wires is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of metal wire drawing equipment, and in particular to a metal wire straightening device and a straightening method. Background Art

[0002] Before further processing, metal wires such as tungsten wires usually need to be straightened by a straightening machine. In addition, after processing, the metal wires are generally rolled up on a reel for easy storage. This results in the need to straighten the metal wires when they are needed, and some used metal wires also need to be straightened again when they need to be reused.

[0003] Existing straightening machines mostly use external force to press the outside of the metal wire, such as using straightening rollers to squeeze the metal wire and other wire materials to achieve the purpose of straightening. This method may cause damage to the surface of the metal wire. At the same time, existing straightening machines are almost all for straightening metal wires of a single material, and when the material and quality of the metal wire change, the straightening quality will also be affected, and the adaptability is poor. Summary of the invention

[0004] In view of some or all of the problems in the prior art, the present invention provides a wire straightening device in a first aspect, comprising:

[0005] a pay-off module; and

[0006] The straightening module is arranged downstream of the pay-off module along the wire running direction, and the straightening module comprises a plurality of tower wheel sliding friction assemblies arranged in sequence along the wire running direction.

[0007] Furthermore, the pay-off module comprises:

[0008] Mounting plate;

[0009] A wire pay-off drum, which is fixed on the mounting plate, the wire pay-off drum is driven to rotate by a first motor and is used to pay out metal wire;

[0010] A guide wheel assembly, which is fixedly arranged on the mounting plate through a fixing rod and is arranged on a wire outlet side of the pay-off drum;

[0011] A swing rod, which is arranged at the outlet side of the guide wheel assembly, and the first end of which is rotatably connected to the mounting plate, and the second end of which is provided with a balance wheel; and

[0012] A fixed guide wheel is fixedly arranged on the mounting plate and arranged on the outgoing line side of the guide wheel assembly.

[0013] Furthermore, the first motor is arranged on the second surface of the mounting plate, the rotating shaft of the first motor passes through the mounting plate, and the pay-off drum is sleeved on the rotating shaft.

[0014] Furthermore, the guide wheel assembly includes at least two guide wheels coaxially mounted.

[0015] Furthermore, the swing rod comprises an angle sensing device, and the angle sensing device is used to detect the swing angle of the swing rod.

[0016] Furthermore, the pay-off module also includes a controller, which is communicatively connected to the angle sensing device and is used to control the operation of the first motor according to the swing angle of the swing arm, thereby controlling the pay-off speed and tension of the metal wire.

[0017] Furthermore, the structures of the tower wheel friction assemblies are the same, and each of the tower wheel friction assemblies includes a second motor, a reducer and a tower wheel, wherein the tower wheel is connected to the rotating shaft of the second motor.

[0018] Furthermore, the material of the step pulley is ceramic, and its surface finish is 0.1 to 0.5 um.

[0019] Furthermore, the rotation speed ratio of any two adjacent tower pulley friction assemblies is controlled so as to keep the tension of the metal wire constant.

[0020] Furthermore, the rotation speed ratio of any two adjacent tower pulley friction assemblies is 0.95 to 1.

[0021] Based on the metal wire straightening device as described above, the second aspect of the present invention provides a metal wire straightening method, comprising:

[0022] Determine the required tension according to the wire diameter of the metal wire, and determine the rotation speed of each tower wheel friction assembly and the distance between two adjacent tower wheel friction assemblies according to the tension;

[0023] Adjust the spacing between each tower wheel sliding components;

[0024] The metal wire is passed through the pay-off module and each tower wheel sliding friction assembly in sequence to straighten the metal wire.

[0025] Furthermore, the metal wire straightening method further comprises:

[0026] Adjust the line-releasing speed in real time according to the swing angle of the swing arm.

[0027] The present invention provides a metal wire straightening device and a metal wire straightening method, which adjust the metal wire tension through a wire-releasing mechanism and cooperate with the rotation speed difference of each tower wheel sliding mechanism to achieve metal wire straightening. The overall structure is simple and it is not easy to avoid damage to the metal wire. At the same time, it can be applied to metal wires of different materials and wire diameters and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0029] Figure 1 A schematic structural diagram of a metal wire straightening device according to an embodiment of the present invention is shown;

[0030] Figure 2 A schematic structural diagram of a pay-off module according to an embodiment of the present invention is shown;

[0031] Figure 3 A schematic side view of a pay-off module according to an embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram showing the structure of a tower pulley friction assembly according to an embodiment of the present invention; and

[0033] Figure 5 A schematic flow chart of a wire straightening method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0034] In the following description, the present invention is described with reference to various embodiments. However, those skilled in the art will recognize that various embodiments can be implemented without one or more specific details or with other replacement and / or additional methods, materials or components. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid blurring the inventive point of the present invention. Similarly, for the purpose of explanation, specific quantities, materials and configurations are set forth to provide a comprehensive understanding of embodiments of the present invention. However, the present invention is not limited to these specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn in correct proportions.

[0035] In this specification, reference to "one embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention. The phrase "in one embodiment" appearing in various places in this specification does not necessarily all refer to the same embodiment.

[0036] In the present invention, unless otherwise specified, "arranged on...", "arranged above..." and "arranged above..." do not exclude the existence of an intermediate between the two. In addition, "arranged on or above..." merely indicates the relative positional relationship between two components, and in certain cases, such as after reversing the product direction, it can also be converted into "arranged below or below...", and vice versa.

[0037] In the present invention, unless otherwise specified, the quantifiers "a", "an" and "an" do not exclude the presence of a plurality of elements.

[0038] It should also be pointed out that in the embodiments of the present invention, for the sake of clarity and simplicity, only a portion of the parts or components may be shown, but a person of ordinary skill in the art will understand that under the teachings of the present invention, required parts or components may be added as needed in specific scenarios.

[0039] It should also be noted that within the scope of the present invention, the terms "same", "equal", "equal to" and the like do not mean that the values ​​of the two are absolutely equal, but allow a certain reasonable error, that is, the terms also cover "substantially the same", "substantially equal", "substantially equal to". By analogy, in the present invention, the terms "perpendicular to", "parallel to" and the like indicating directions also cover the meanings of "substantially perpendicular to" and "substantially parallel to".

[0040] The present invention provides a metal wire straightening device, which mainly realizes the straightening of the metal wire by adjusting the tension of the wire-releasing mechanism and the speed difference of the tower wheel sliding mechanism. The technical scheme of the present invention is further described below in conjunction with the accompanying drawings of the embodiments.

[0041] Figure 1 FIG. 2 is a schematic diagram showing the structure of a wire straightening device according to an embodiment of the present invention. Figure 1 As shown, a wire straightening device includes a wire-releasing module 101 and a straightening module 102 in sequence along the wire running direction, wherein the wire-releasing module 101 is an active wire-releasing mode, which can adjust the wire-releasing speed of the wire in real time, thereby adjusting the tension of the wire. The straightening module 102 includes a plurality of tower wheel friction assemblies 121 arranged in sequence along the wire running direction, and the tension of the wire is further adjusted through the speed difference between the tower wheel friction assemblies 121 to achieve the straightening of the wire.

[0042] Figure 2 A schematic diagram showing the structure of a pay-off module according to an embodiment of the present invention, and Figure 3 A schematic side view of a pay-off module according to an embodiment of the present invention is shown. As shown in the figure, in one embodiment of the present invention, the pay-off module includes a mounting plate 111, a pay-off drum 112, a guide wheel group 113, a balance wheel 114, and a fixed guide wheel 115. The pay-off drum 112, the guide wheel group 113, the balance wheel 114, and the fixed guide wheel 115 are all arranged on the first surface of the mounting plate 111, and the rotating axes of the pay-off drum 112, the guide wheel group 113, the balance wheel 114, and the fixed guide wheel 115 are all perpendicular to the mounting plate 111. In one embodiment of the present invention, Figure 2As shown, the pay-off drum 112 is arranged at the lower left corner of the mounting plate 111, the guide wheel group 113 is arranged above the pay-off drum 112, and is located at the line outlet side of the pay-off drum 112, the balance wheel 114 is arranged between the pay-off drum 112 and the guide wheel group 113 in terms of height, and is located at the line outlet side of the guide wheel group 113, and the fixed guide wheel 115 is arranged between the balance wheel 114 and the guide wheel group 113 in terms of height, and is located at the line outlet side of the balance wheel 114.

[0043] The wire-releasing drum 112 is used to release the metal wire, and is driven to rotate by the first motor 116. Figure 3 As shown, in one embodiment of the present invention, the first motor 116 is disposed on a second surface of the mounting plate 111 opposite to a side surface on which the pay-off drum 112 is mounted, and a rotating shaft of the first motor 116 passes through the mounting plate 111, and the pay-off drum 112 is sleeved on the rotating shaft, and can be rotated under the drive of the first motor 116. The first motor 116 is controlled by a controller, and by adjusting the speed of the first motor 116, the speed of the pay-off drum 112 can be controlled, thereby controlling the pay-off speed and adjusting the tension of the metal wire.

[0044] In one embodiment of the present invention, the guide wheel group 113 is fixed to the first surface of the mounting plate 111 through a fixing rod 117, and the guide wheel group 113 is arranged at the end of the fixing rod 117. Figure 3 As shown, the guide wheel assembly 113 includes at least two guide wheels 1131 coaxially mounted.

[0045] In one embodiment of the present invention, the balance wheel 114 is disposed at the second end of the swing rod 118, and the first end of the swing rod 118 is rotatably connected to the mounting plate 111. In one embodiment of the present invention, the swing rod 118 includes an angle sensing device, which can detect the swing angle of the swing rod in real time and send it to the controller of the first motor 116. The controller controls the rotation speed of the first motor based on the swing angle, thereby controlling the pay-off speed and adjusting the wire tension.

[0046] The working process of the pay-off module is as follows: the metal wire is pulled out from the pay-off drum 112, and passes through a guide wheel far away from the mounting plate, the balance wheel 114, a guide wheel close to the mounting plate and the fixed guide wheel 115 in the guide wheel group 113 in turn, and the first motor 116 is started by the controller to drive the pay-off drum 112 to rotate and pay-off. When the metal wire passes through the subsequent straightening module, due to the existence of friction, the metal wire has a drawing speed, and the drawing speed is often different from the active pay-off speed of the pay-off drum 112. Therefore, it is necessary to balance the active pay-off speed and the drawing speed through the swing rod and the balance wheel to ensure the tension of the metal wire. Specifically, when the drawing speed is greater than the active pay-off speed, the swing of the swing rod begins to rise, and when the swing angle of the balance wheel is greater than the set first angle, the swing rod feeds back the signal to the controller, and the controller controls the first motor to increase the speed to increase the active pay-off speed of the pay-off drum. The control program in the controller can be, for example, a PID control program. The larger the swing rod angle, the greater the pay-off speed, which is an integral relationship. When the active pay-off speed is greater than the wire drawing speed and the swing angle of the balance wheel is lower than the set second angle, the pendulum rod feeds back a signal to the controller, and the controller controls the motor to reduce the speed to reduce the active pay-off speed of the pay-off reel, where the first angle is greater than the second angle.

[0047] It should be understood that in other embodiments of the present invention, other pay-off modules with adjustable wire tension known in the art may also be used, which will not be described in detail here.

[0048] In one embodiment of the present invention, the structures of the tower pulley friction assemblies are the same. Figure 4 A schematic diagram showing the structure of a tower wheel friction assembly according to an embodiment of the present invention is shown in FIG. Figure 4 As shown, any of the step pulley sliding friction assemblies includes a second motor 401, a speed reducer 402 and a step pulley 403, wherein the step pulley 403 is connected to the rotating shaft of the second motor 401. In one embodiment of the present invention, in order to avoid damage to the surface of the metal wire during the straightening process, the step pulley 403 is made of a material with a higher surface finish and is a flat wheel. In one embodiment of the present invention, the surface finish of the step pulley 403 is 0.1 to 0.5 um. In one embodiment of the present invention, the step pulley 403 is a ceramic flat wheel.

[0049] As mentioned above, in an embodiment of the present invention, the tension of the metal wire is further adjusted by the speed difference between each tower wheel friction assembly to straighten the metal wire. In one embodiment of the present invention, the speed ratio of any two adjacent tower wheel friction assemblies is determined according to the required wire tension. In one embodiment of the present invention, the spacing between any two adjacent tower wheel friction assemblies is a fixed value, and the tension is maintained constant by relying on the tower speed. Preferably, the speed ratio of any two adjacent tower wheel friction assemblies is 0.95 to 1. Taking three tower wheel friction assemblies as an example, when the wire tension is 100cn, the speed ratio of the three tower wheels along the wire routing direction is 0.95:1:1.05.

[0050] In addition, the wire tension can be further adjusted by adjusting the distance between any two adjacent tower wheel friction assemblies. Based on this, in one embodiment of the present invention, the position of each tower wheel friction assembly is adjustable, for example, the wire-releasing module and the straightening module are both fixed on the same bottom plate, and the bottom plate includes a plurality of mounting holes, and the wire-releasing module and each tower wheel friction assembly can be installed at different mounting holes according to actual needs.

[0051] Based on the wire straightening device as described above, Figure 5 A schematic diagram showing a process of a wire straightening method according to an embodiment of the present invention is shown as follows: Figure 5 As shown, a wire straightening method comprises:

[0052] First, in step 501, the position and rotation speed of the tower wheel friction assembly are determined. The required tension is determined according to the wire diameter of the metal wire, and the rotation speed of each tower wheel friction assembly and the distance between two adjacent tower wheel friction assemblies are determined according to the tension;

[0053] Next, in step 502, the position of the tower wheel friction assembly is adjusted. The spacing between each tower wheel friction assembly is adjusted; and

[0054] Finally, in step 503, straightening begins. The metal wire is passed through the pay-off module and each tower wheel sliding assembly in sequence, and the first and second motors are started to start the metal wire straightening. As mentioned above, in one embodiment of the present invention, the pay-off speed can also be adjusted in real time according to the swing angle of the swing arm, thereby ensuring the tension of the metal wire.

[0055] The present invention provides a metal wire straightening device and a metal wire straightening method, which adjust the metal wire tension through a wire-releasing mechanism and cooperate with the rotation speed difference of each tower wheel sliding mechanism to achieve metal wire straightening. The overall structure is simple and it is not easy to avoid damage to the metal wire. At the same time, it can be applied to metal wires of different materials and wire diameters and has a wide range of applications.

[0056] Although various embodiments of the present invention are described above, it should be understood that they are presented as examples only and not as limitations. It is obvious to those skilled in the relevant art that various combinations, modifications and changes can be made thereto without departing from the spirit and scope of the present invention. Therefore, the breadth and scope of the present invention disclosed herein should not be limited by the exemplary embodiments disclosed above, but should only be defined according to the attached claims and their equivalents.

Claims

1. A wire straightening device, characterized in that: Along the wire routing direction, it includes: a pay-off module; and The straightening module comprises a plurality of tower wheel sliding friction components which are arranged in sequence along the running direction of the metal wire.

2. The wire straightening device according to claim 1, characterized in that: The pay-off module comprises: Mounting plate; A wire pay-off drum, which is fixed on the mounting plate, and the wire pay-off drum is driven to rotate by a first motor, wherein the first motor is arranged on the second surface of the mounting plate, and the rotating shaft of the first motor passes through the mounting plate, and the wire pay-off drum is sleeved on the rotating shaft; A guide wheel assembly, which is fixedly arranged on the mounting plate through a fixing rod and is arranged on the outlet side of the pay-off drum, and the guide wheel assembly includes at least two guide wheels coaxially installed; A swing rod, which is arranged at the outlet side of the guide wheel assembly, and the first end of which is rotatably connected to the mounting plate, and the second end of which is provided with a balance wheel; and A fixed guide wheel is fixedly arranged on the mounting plate and arranged on the outgoing line side of the guide wheel assembly.

3. The wire straightening device according to claim 2, characterized in that: The swing rod includes an angle sensing device configured to detect a swing angle of the swing rod.

4. The wire straightening device according to claim 3, characterized in that: The pay-off module also includes a controller, which is communicatively connected to the angle sensing device and is configured to control the operation of the first motor according to the swing angle of the swing arm, thereby controlling the pay-off speed and tension of the metal wire.

5. The wire straightening device according to claim 1, characterized in that: The structures of the tower wheel friction assemblies are the same, and each of the tower wheel friction assemblies comprises a second motor, a reducer and a tower wheel, wherein the tower wheel is connected to the rotating shaft of the second motor.

6. The wire straightening device according to claim 5, characterized in that: The material of the step wheel is ceramic, and the surface finish thereof is 0.1 to 0.5 um.

7. The wire straightening device according to claim 5, characterized in that: The speed ratio of any two adjacent tower wheel sliding assemblies is controlled so as to keep the tension of the metal wire constant.

8. The wire straightening device according to claim 5, characterized in that: The speed ratio of any two adjacent tower pulley friction assemblies is 0.95 to 1.

9. A method for straightening a metal wire, characterized in that: Includes steps: Determine the required tension according to the wire diameter of the metal wire, and determine the rotation speed of each tower wheel friction assembly and the distance between two adjacent tower wheel friction assemblies according to the tension; Adjust the spacing between each tower wheel sliding components; The metal wire is passed through the pay-off module and each tower wheel sliding friction assembly in turn to straighten the metal wire.

10. The method for straightening a metal wire according to claim 9, characterized in that: Also includes the steps: Adjust the line-releasing speed in real time according to the swing angle of the swing arm.

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