Wire bending device

Abstract

The utility model discloses a wire bender, which comprises a rotating mechanism, a middle shaft barrel, a positioning guide piece and a telescopic bending roller piece, and is characterized in that a rotating shaft is arranged at the movable end of the rotating mechanism and is used for driving the rotating shaft to rotate; the middle shaft barrel is fixed to the rotating mechanism and coaxially arranged on the outer side of the rotating shaft in a sleeving mode. The positioning guide piece comprises an extension arm and a first roller, the extension arm is fixed to the outer side of the rotating mechanism, the first roller is rotationally connected to the top of the extension arm, and a space allowing a wire to penetrate through is formed between the first roller and the middle shaft barrel; the telescopic bending roller piece is arranged at the top end of the rotating shaft and has the position state of shortening and pushing the wire to be attached to the middle shaft barrel and the position state of extending and separating from the outer side of the wire. According to the wire bending device provided by the utility model, through the cooperation of the middle shaft cylinder, the first roller and the telescopic bending roller piece, under the rotation driving of the rotating mechanism to the telescopic bending roller piece, wires with different thicknesses can be effectively bent, and the bending angle is easy to control.

Description

Technical Field

[0001] The utility model relates to the technical field of wire bending, and particularly relates to a wire bender. Background Art

[0002] For overhead line cables, during the connection process, when a main wire is made and a wire needs to be led out and joined with the main wire, it is necessary to adjust the angle and direction at this time so that it can be bent and joined with the main wire. There are many specifications of existing benders, but most of them are manually operated. For example, Chinese Patent No. 201020554918.8 discloses a manual wire bending tool, which includes a substrate. Handle sleeves are provided at both ends of the substrate. A strip-shaped chute is opened on the substrate. Columns are slidably installed at both ends of the chute respectively. A limiting plate is sleeved at the lower end of the column. The substrate is above the limiting plate, and a nut 62 is below the limiting plate. The nut 62 is screwed onto the column.

[0003] For the above-mentioned existing technology, there are also the following disadvantages: The manually operated bender can bend thinner wires casually, but for thicker wires, due to the limited arm strength of people, it is not easy to achieve a sufficient bending curvature and it is also not easy to control the bending angle. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and propose a wire bender to solve the technical problem that in the existing technology, the manually operated bender can bend thinner wires casually, but for thicker wires, due to the limited arm strength of people, it is not easy to achieve a sufficient bending curvature and it is also not easy to control the bending angle.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a wire bender, including:

[0007] A rotating mechanism, whose movable end is provided with a rotating shaft for driving the rotating shaft to rotate;

[0008] A central shaft cylinder, which is fixed on the rotating mechanism and coaxially sleeved outside the rotating shaft;

[0009] A positioning and guiding member, including an extension arm and a first roller. The extension arm is fixed outside the rotating mechanism. The first roller is rotatably connected to the top of the extension arm and forms a space for the wire to pass through between it and the central shaft cylinder; and

[0010] A telescopic bending roller member, which is arranged at the top end of the rotating shaft and has a position state of shortening and pushing the wire to fit against the central shaft cylinder, and a position state of elongating and disengaging from the outside of the wire.

[0011] In some embodiments, it further includes a scale component, which includes a dial and an index dial. The dial is arranged on the top of the central shaft cylinder, the index dial is rotatably connected to the top of the dial, and an indicating arrow extends outward from the index dial for marking the position on the dial where the bending angle is required.

[0012] In some embodiments, the telescopic bending roller member includes a telescopic mechanism and a second roller. One end of the telescopic mechanism is connected to the top end of the rotating shaft, and the bottom of the other end is rotatably connected to the second roller.

[0013] In some embodiments, the telescopic mechanism includes an electric push rod and a fixed base. The electric push rod is installed on the top of the fixed base, and the telescopic end of the electric push rod is rotatably connected to the second roller.

[0014] In some embodiments, a limiting stop block is arranged on the outer side of the fixed base.

[0015] In some embodiments, the rotating mechanism includes a driving motor, and the output shaft of the driving motor is fixedly connected to the rotating shaft.

[0016] In some embodiments, a locking member is arranged on the index dial for locking the position of the index dial.

[0017] In some embodiments, the locking member includes a bolt and a nut. An annular groove is formed at the top of the central shaft cylinder, and an annular through hole corresponding to the position of the annular groove is formed on the dial. The bolt penetrates downward through the index dial and the annular through hole and is connected to the nut. The nut is inserted into the annular groove and abuts against the bottom of the dial.

[0018] In some embodiments, an extension rod corresponding to the position of the indicating arrow is arranged on the index dial, and a travel switch is arranged on the extension rod. The travel switch is electrically connected to the driving motor and is used to stop the driving motor when the limiting stop block contacts the travel switch.

[0019] In some embodiments, the outer sides of the central shaft cylinder, the first roller, and the second roller are all in an arc concave shape.

[0020] Compared with the prior art, the wire bender provided by the present utility model, through the cooperation of the central shaft cylinder, the first roller, and the telescopic bending roller member, under the rotational drive of the rotating mechanism on the telescopic bending roller member, can effectively bend wires of different thicknesses and is easy to control the bending angle. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the wire bender provided by the embodiment of the present utility model;

[0022] Figure 2 It is a three-dimensional exploded view of the wire bender provided by the embodiment of the present utility model;

[0023] Figure 3 It is a top view of the structure of the wire bender provided by the embodiment of the present utility model;

[0024] Figure 4 It is a top view of the wire bender provided by the embodiment of the present utility model without the electric push rod blocking;

[0025] Figure 5 It is a schematic diagram of the initial bending position of the wire bender provided by the embodiment of the present utility model;

[0026] Figure 6 It is a schematic diagram of the end bending position of the wire bender provided by the embodiment of the present utility model. Specific embodiments

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] In order to solve the technical problem that a manually operated bender can bend thin wires casually, but for thick wires, due to the limited arm strength of people, it is not easy to achieve a sufficient bending curvature and it is also not easy to control the bending angle, the present utility model provides a wire bender that can effectively bend both thick and thin wires and is easy to control the bending angle.

[0029] It should be noted that the wire bender described in the present utility model is used for but not limited to the bending of overhead line cables, etc. For the convenience of description, in the present utility model, only the case where the wire bender is applied to the bending of overhead line cables is taken as an example for description, and the principle of the wire bender applied to other types of cables is substantially the same as that applied to the bending of overhead line cables, and will not be elaborated here one by one.

[0030] Please refer to Figure 1 , Figure 1This is a schematic structural diagram of a wire bender in an embodiment of the present utility model. The wire bender includes a rotating mechanism 1, a central shaft cylinder 2, a positioning and guiding member 3, and a telescopic bending roller member 4. The movable end of the rotating mechanism 1 is provided with a rotating shaft 101 for driving the rotation of the rotating shaft 101. The central shaft cylinder 2 is fixed on the rotating mechanism 1 and coaxially sleeved outside the rotating shaft 101. The positioning and guiding member 3 includes an extension arm 31 and a first roller 32. The extension arm 31 is fixed outside the rotating mechanism 1, and the first roller 32 is rotatably connected to the top of the extension arm 31 and forms a space for the wire to pass through between it and the central shaft cylinder 2. The central shaft cylinder 2 and the first roller 32 are at the same height position, and the space therebetween is for the wire 7 to pass through. Moreover, the length of the extension arm 31 is greater than the heights of the first roller 32 and the central shaft cylinder 2, so that wires of different thickness specifications that can be bent within the height range of the first roller 32 and the central shaft cylinder 2 can all pass through this space for subsequent bending, achieving the effect of bending wires of different thicknesses. The telescopic bending roller member 4 is arranged at the top of the rotating shaft 101 and has a position state of shortening and pushing the wire to fit against the central shaft cylinder 2, and a position state of elongating and disengaging from the outside of the wire. When the telescopic bending roller member 4 shortens and pushes the wire 7 to fit against the central shaft cylinder 2, then the rotating mechanism 1 is driven to rotate the telescopic bending roller member 4. Driven by the telescopic bending roller member 4, the wire 7 is bent along the outer circumferential surface of the central shaft cylinder 2 to form a specific bending effect. Among them, by controlling the rotation angle of the rotating mechanism 1, it is convenient to control the bending angle, and moreover, manual bending by humans is avoided, and effective bending effects can be formed for wires of different thicknesses.

[0031] In this embodiment, specifically refer to Figure 5 and Figure 6 , pass the wire through the space between the first roller 32 and the central shaft cylinder 2, and rotate the pushing position of the telescopic bending roller member 4 to the position where the wire 7 is tangent to the central shaft cylinder 2. Then, shorten the telescopic bending roller member 4 and push the wire 7 to fit against the central shaft cylinder 2. At this time, make the starting position of the bending rotation coincide with the position where the wire 7 is tangent to the central shaft cylinder 2. Then, under the driving of the rotation of the rotating mechanism 1, for every angle it rotates, correspondingly, the telescopic bending roller member 4 will bend the wire 7 by the same angle, and a control effect of a bending angle can be achieved.

[0032] It can be understood that since the deformation degrees of different wires may vary during actual bending, therefore, the bending angle accuracy of this bender has a floating deviation with upper and lower values, which is normal and belongs to the error tolerance range of this type of wire bending.

[0033] In one of the embodiments, please refer to Figure 1 , Figure 2 and Figure 4, in order to more easily control the bending angle, on this wire bender, there is also a scale assembly 5. The scale assembly 5 includes a circular angle scale disk 51 and an index disk 52. The scale disk 51 is fixed on the top of the central axis cylinder 2, and the index disk 52 is rotatably connected to the top of the scale disk 51. The diameter of the index disk 52 is smaller than that of the scale disk 51, and an indicating arrow 501 extends outward from the index disk 52 for marking the position on the scale disk 51 where the angle to be bent is required.

[0034] In this embodiment, by rotating the scale disk 51 to rotate the indicating arrow 501, the angle scale indicated by the indicating arrow 501 is subtracted from the angle scale corresponding to the tangent position of the wire 7 and the bending line of the central axis cylinder 2, and the set bending angle can be obtained.

[0035] It can be understood that this scale assembly 5 can be used for angle control before bending and also for angle measurement after bending.

[0036] In one of the embodiments, please refer to Figure 2 , in order to adapt to the controllable angle bending of wires with different thicknesses, the telescopic bending roller member 4 includes a telescopic mechanism 41 and a second roller 42. One end of the telescopic mechanism 41 is connected to the top end of the rotating shaft 101, and the bottom of the other end is rotatably connected to the second roller 42. The telescopic mechanism 41 is used to telescopically push the second roller 42 to control its distance from the central axis cylinder 2, and the second roller 42, the first roller 32, and the central axis cylinder 2 are located at the same height position.

[0037] Specifically, the telescopic mechanism 41 includes an electric push rod 411 and a fixed base 412. The electric push rod 411 is installed on the top of the fixed base 412, and the telescopic end of the electric push rod 411 is rotatably connected to the second roller 42.

[0038] In one of the embodiments, please refer to Figure 2 , the rotating mechanism 1 includes a driving motor 11. The output shaft of the driving motor 11 is fixedly connected to the rotating shaft 101. Among them, the driving motor 11 can adopt a torque motor, and the bending shaft is controlled to bend the workpiece to be processed by adjusting the output torque of the motor.

[0039] In one of the embodiments, please refer to Figure 2 , a locking member 6 is provided on the index disk 52 for locking the position of the index disk 52. After the index disk 52 rotates, the position of the index disk 52 can be locked by the locking member 6.

[0040] Specifically, the locking member 6 includes a bolt 61 and a nut 62. An annular groove 201 is formed at the top of the central shaft cylinder 2. An annular through hole 502 corresponding to the position of the annular groove 201 is formed on the scale disk 51. The bolt 61 penetrates downward through the index disk 52 and the annular through hole 502 and is connected to the nut 62. The nut 62 is inserted into the annular groove 201 and abuts against the bottom of the scale disk 51. Among them, the top end of the nut 62 abuts against the bottom of the index disk 52, and the head of the bolt 61 abuts against the top of the index disk 52, pressing the index disk 52 against the top of the scale disk 51 to form a lock.

[0041] It can be understood that the outer diameter of the nut 62 is greater than the cross-sectional width of the hole of the annular through hole 502.

[0042] Furthermore, in order to automatically stop bending after setting the bending angle and reach the corresponding bending angle position, an extension rod 503 corresponding to the position of the indicating arrow 501 is provided on the index disk 52. A travel switch 504 is provided on the extension rod 503. The travel switch 504 is electrically connected to the drive motor 11. When the limit stop 413 contacts the travel switch 504, the drive motor 11 stops rotating. Correspondingly, a limit stop 413 is provided on the outer side of the fixed base 412. During the bending rotation, the wire 7 is bent to the corresponding angle, and the limit stop 413 contacts the travel switch 504 to form a feedback of the position signal. Correspondingly, the motor controller on the drive motor 11 receives this signal, thereby controlling the drive motor 11 to stop rotating, achieving the effect of automatically stopping bending.

[0043] It can be understood that the drive motor 11 includes a motor main body and a motor controller. The motor main body is electrically connected to the motor controller, and the travel switch 504 is electrically connected to the motor controller. When the travel switch 504 is triggered, it sends a signal to the motor controller. After receiving this signal, the motor controller controls the behavior of the motor according to a preset program, such as stopping the motor, reversing the motor direction, or adjusting the motor speed. The above are all existing mature motor control technologies and will not be elaborated here.

[0044] Among them, the outer sides of the central shaft cylinder 2, the first roller 32, and the second roller 42 are all in an arc concave shape, which is convenient for fitting the wire and bending.

[0045] For a better understanding of the present invention, the following is combined with Figures 1 to 6The technical solution of the present utility model will be described in detail: Pass the wire 7 through the space between the first roller 32 and the middle shaft cylinder 2, so that the wire 7 is tangent to both the middle shaft cylinder 2 and the first roller 32, and rotate the second roller 42 to the position where the wire 7 is tangent to the middle shaft cylinder 2. According to the scale value of the scale disk 51 corresponding to the tangent point position, then rotate the index disk 52 to increase an angle value that needs to be bent, and point the indicating arrow 501 to this position, so as to complete the preset of the bending angle; Then, through the contraction of the electric push rod 411, the second roller 42 is attached to the outside of the wire 7, and then driven by the rotation of the rotating mechanism 1, the second roller 42 rotates around the middle shaft cylinder 2 as the axis, and the wire 7 is bent along the outer surface of the middle shaft cylinder 2. When the bending reaches the trigger of the limit stop 413 and the travel switch 504, the driving motor 11 stops rotating, and the corresponding angle bending of the wire 7 is completed.

[0046] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A wire bender for bending a wire, characterized in that: include: A rotating mechanism, the movable end of which is provided with a rotating shaft for driving the rotating shaft to rotate; A middle shaft cylinder, which is fixed on the rotating mechanism and coaxially sleeved on the outer side of the rotating shaft; The positioning guide comprises an extension arm and a first roller, wherein the extension arm is fixed to the outside of the rotating mechanism, the first roller is rotatably connected to the top of the extension arm, and a space is formed between the first roller and the central shaft tube for the wire to pass through; as well as The telescopic bending roller is arranged at the top end of the rotating shaft and has a position state of shortening and pushing the wire to fit the central shaft tube, and a position state of extending and leaving the outside of the wire.

2. The wire bender according to claim 1, characterized in that: It also includes a ruler assembly, which includes a scale plate and an indicator plate. The scale plate is arranged on the top of the central axis tube, and the indicator plate is rotatably connected to the top of the scale plate. An indicator arrow extends outward from the indicator plate to indicate the position on the scale plate where the bending angle is required.

3. The wire bender according to claim 2, characterized in that: The telescopic bending roller wheel component comprises a telescopic mechanism and a second roller wheel. One end of the telescopic mechanism is connected to the top end of the rotating shaft, and the bottom of the other end is rotatably connected to the second roller wheel.

4. The wire bender according to claim 3, characterized in that: The telescopic mechanism comprises an electric push rod and a fixed base. The electric push rod is installed on the top of the fixed base, and the telescopic end of the electric push rod is rotatably connected to the second roller.

5. The wire bender according to claim 4, characterized in that: A limit stopper is arranged on the outer side of the fixed base.

6. The wire bender according to claim 5, characterized in that: The rotating mechanism comprises a driving motor, and an output shaft of the driving motor is fixedly connected to the rotating shaft.

7. The wire bender according to claim 6, characterized in that: The indicator plate is provided with a locking piece for locking the position of the indicator plate.

8. The wire bender according to claim 7, characterized in that: The locking piece includes a bolt and a nut. An annular groove is provided on the top of the central axis tube, and an annular through hole corresponding to the position of the annular groove is provided on the dial. The bolt passes downward through the indicator dial and the annular through hole and is connected to the nut. The nut is inserted in the annular groove and abuts against the bottom of the dial.

9. The wire bender according to claim 8, characterized in that: The indicator plate is provided with an extension rod corresponding to the position of the indicating arrow, and the extension rod is provided with a travel switch, which is electrically connected to the driving motor and is used to stop the driving motor when the limit block contacts the travel switch.

10. The wire bender according to claim 9, characterized in that: The outer sides of the central shaft tube, the first roller and the second roller are all in an arc-shaped concave shape.

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