Double-thread screw type portable wire bending device

Abstract

The utility model relates to the technical field of wire bending tools, and discloses a double-thread screw type portable wire bending device which comprises a fixing support, a double-thread screw, a first bending arm and a second bending arm are arranged on the fixing support, the two ends of the double-thread screw are sleeved with sliding blocks respectively, the first bending arm is fixed to one sliding block in a rotating mode, and the second bending arm is fixed to the other sliding block in a rotating mode. The second bending arm is rotatably fixed on the other sliding block, and the first bending arm and the second bending arm are crossed and rotatably connected; a first wire bending positioning structure is arranged at the joint position of the first bending arm and the second bending arm, a second wire bending positioning structure and a third wire bending positioning structure are installed on the same side of the first bending arm and the second bending arm, and a wire is inserted into gaps of the first wire bending positioning structure, the second wire bending positioning structure and the third wire bending positioning structure. The distances among the three bending positioning structures are changed so as to bend the wire rod; the device is simple in structure, small in size, convenient and easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of wire bending tools, and in particular to a double-headed screw type portable wire bending device. Background Technology

[0002] Rigid wires such as cables and copper wires often need to be bent from long straight lines to the required angles to adapt to spatial layouts and facilitate installation or connection. Proper bending of cables can also prevent damage to their internal structure due to excessive stretching or twisting. Standardized bending also keeps cable wiring neat, thereby improving safety and reliability.

[0003] In the field of cable laying and related operations, cable bending equipment is an extremely important tool. Traditional cable bending equipment is usually large and bulky. Some large cable bending equipment uses heavy metal frames to support and fix the complex internal mechanical structure. While these structures can efficiently complete the cable bending task, they significantly increase the overall weight of the equipment, making it difficult to move easily. Moreover, the shape of this type of equipment is often irregular, lacking a special design for portability, making it inconvenient to store and transport.

[0004] In real-world work scenarios, workers often need to lay cables in various locations, such as construction sites and municipal engineering sites. These locations are widely distributed and not fixed. The inconvenient-to-carry cable bending equipment becomes a major obstacle. Workers need to spend a lot of time and energy moving the equipment, which not only increases operating costs but also reduces work efficiency. In case of emergency tasks, if the equipment cannot reach the site in time, it will cause even greater losses.

[0005] Therefore, it is urgent to develop a portable cable bending device to meet the growing and diverse work requirements. Utility Model Content

[0006] The main purpose of this utility model is to provide a portable wire bending device with a double-headed screw, which aims to solve the technical problem that the wire bending device has a complex structure and is not easy to carry.

[0007] To achieve the above objectives, this utility model provides a portable wire bending device with a double-ended screw. The device includes a fixed bracket on which a double-ended screw, a first bending arm, and a second bending arm are mounted. Slider blocks are respectively threaded onto the two ends of the double-ended screw. Rotation of the double-ended screw causes the two sliders to move relative to each other or away from each other. The first bending arm is rotatably fixed to one slider, and the second bending arm is rotatably fixed to the other slider. The first and second bending arms intersect. It can be rotatably connected; a first wire bending positioning structure is provided at the junction of the first bending arm and the second bending arm, a second wire bending positioning structure is installed on the first bending arm, and a third wire bending positioning structure is installed on the second bending arm. The wire is inserted between the first wire bending positioning structure, the second wire bending positioning structure and the third wire bending positioning structure. When the two sliders move closer or further apart, the distance between the second wire bending positioning structure, the third wire bending positioning structure and the first wire bending positioning structure changes, so as to bend the wire.

[0008] Optionally, in one embodiment, the first bending arm includes a first bending frame and a second bending frame, the top end of the second bending frame is fixed to the first bending frame to form a V-shaped support arm with an inclined angle, and the other top end of the second bending frame is connected to a first rotating wheel;

[0009] The second bending arm includes a third bending frame and a fourth bending frame. The top end of the fourth bending frame is fixed to the third bending frame to form a V-shaped support arm with an inclined angle. The other top end of the fourth bending frame is connected to a second rotating wheel.

[0010] The top surfaces of the first rotating wheel and the second rotating wheel are opposite to each other and rotatably connected to form the first wire bending positioning structure.

[0011] Optionally, in one embodiment, both the second wire bending positioning structure and the third wire bending positioning structure are rollers, and the rollers have grooves that are concave in the direction of the rotation axis.

[0012] Optionally, in one embodiment, on the first bending frame, the roller is located at the connection end between the first bending frame and one of the sliders, and on the third bending frame, the roller is located at the connection end between the third bending frame and another slider.

[0013] Optionally, in one embodiment, on the first bending frame, the roller is located at the connection end away from the slider, and on the third bending frame, the roller is located at the connection end away from the slider.

[0014] Optionally, in one embodiment, the first bending frame is provided with an elongated hole, and the connecting component passes through the center hole and the elongated hole of the roller to fix the roller to the first bending frame; the second bending frame is provided with an elongated hole, and the connecting component passes through the center hole and the elongated hole of the roller to fix the roller to the third bending frame.

[0015] Optionally, in one embodiment, the fixing bracket includes a bracket body, the bracket body having a sliding groove, and a first bearing and a second bearing being provided at both ends of the sliding groove, the first bearing and the second bearing fixing the double-ended screw so that its threaded section is located within the sliding groove.

[0016] Optionally, in one embodiment, one end of the double-ended screw protrudes from the outer side of the second bearing or the first bearing to connect a drive device to rotate the double-ended screw.

[0017] Optionally, in one embodiment, the top end of the groove on the bracket body has an opening, and the first bearing and the second bearing are fixed to the bracket body by screws.

[0018] Optionally, in one embodiment, a pressure bearing is provided at the midpoint between the top surfaces of the first rotating wheel and the second rotating wheel.

[0019] Optionally, in one embodiment, the fixing bracket is provided with a handle.

[0020] In the technical solution provided by this utility model, the first bending arm and the second bending arm are rotatably connected and cross each other to form a rotating structure like a scissor. The first bending arm and the second bending arm are respectively connected to and rotatably connected to the slider sleeved on the double-ended screw. A first wire bending positioning structure is provided at the rotatable position where the first bending arm and the second bending arm cross, a second wire bending positioning structure is provided on the first bending arm, and a third wire bending positioning structure is provided on the second bending arm. The wire is inserted into the gap of the first wire bending positioning structure, the second wire bending positioning structure, and the third wire bending positioning structure. As the double-ended screw rotates in one direction, the two sliders move closer to each other or further away from each other. Changing the position of the sliders on the double-ended screw changes the opening angle of the first bending arm and the second bending arm, thereby changing the included angle between the second wire bending positioning structure, the first wire bending positioning structure, and the third wire bending positioning structure, thus changing the distance between the second wire bending positioning structure, the third wire bending positioning structure, and the first wire bending positioning structure.

[0021] As the distance between the second and third wire bending positioning structures and the first wire bending positioning structure continuously decreases, the wires on both outer sides abutting against the second and third wire bending positions, and the wires in the middle abutting against the first wire bending positioning structure, are subjected to opposing compressive forces, thus causing the wires to bend at the first wire bending positioning structure. After bending is complete, the double-ended screw is rotated in the opposite direction to reset the slider, thereby continuously increasing the distance between the second and third wire bending positioning structures and the first wire bending positioning structure. This increases the gap between the two structures, facilitating the removal of the bent wires and preparing for the next bending, enabling the wire bending action to repeat.

[0022] Simultaneously controlling the slider's movement distance allows for the generation of different bending angles. This application features a simple structure, enabling quick and easy cable bending operations. Its small size makes it portable, facilitating bending needs for various cables and other wires during on-site construction. It is flexible in use and has a wide range of applications. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 This is a schematic diagram of the initial state of one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the side structure;

[0026] Figure 3 This is a structural schematic diagram of the usage state of one embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of another embodiment of the present invention.

[0028] In the diagram, 110 is the support body; 120 is the first bearing; 130 is the second bearing; 140 is the double-ended screw; 150 is the handle; 200 is the first bending arm; 2101 is the first bending frame; 2102 is the second bending frame; 220 is the second wire bending positioning structure; 230 is the first rotating wheel; 300 is the second bending arm; 3101 is the third bending frame; 3102 is the fourth bending frame; 320 is the third wire bending positioning structure; 330 is the second rotating wheel; and 400 is the first wire bending positioning structure. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only. In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of indicated technical features. Thus, unless otherwise stated, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0030] Furthermore, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections via an intermediate medium, or internal communication between two components. All technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0031] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] This application provides a portable wire bending device with a double-headed screw. The device includes a fixed bracket, on which a double-headed screw, a first bending arm, and a second bending arm are mounted. Slider blocks are threaded onto the two ends of the double-headed screw. Rotation of the double-headed screw causes the two sliders to move closer or further apart on the screw. The first bending arm is rotatably fixed to one slider, and the second bending arm is rotatably fixed to the other slider. The first and second bending arms intersect and are rotatably connected. A first wire bending positioning structure is provided at the junction of the first and second bending arms. A second wire bending positioning structure and a third wire bending positioning structure are mounted on the first and second bending arms. The wire is inserted between these three structures. When the two sliders move closer or further apart, the distance between the second and third wire bending positioning structures and the first wire bending positioning structure changes, thus bending the wire.

[0033] In this invention, the first and second bending arms are rotatably connected and intersected, forming a scissor-like rotating structure. The first and second bending arms are respectively connected to and rotatably mounted on a slider fitted onto a double-ended screw. A first wire bending positioning structure, a second wire bending positioning structure, and a third wire bending positioning structure are located at the rotatable intersection of the first and second bending arms. The wire is inserted into the gaps between these three structures. As the double-ended screw rotates in one direction, the two sliders move closer to or further apart, changing the position of the sliders on the double-ended screw, thus changing the opening angle of the first and second bending arms. This causes a change in the included angle between the second, first, and third wire bending positioning structures, thereby altering the distance between the second and third wire bending positioning structures and the first wire bending positioning structure.

[0034] As the distance between the second and third wire bending positioning structures and the first wire bending positioning structure continuously decreases, the wires on both outer sides abutting against the second and third wire bending positions, and the wires in the middle abutting against the first wire bending positioning structure, are subjected to opposing compressive forces, thus causing the wires to bend at the first wire bending positioning structure. After bending is complete, the double-ended screw is rotated in the opposite direction to reset the slider, thereby continuously increasing the distance between the second and third wire bending positioning structures and the first wire bending positioning structure. This increases the gap between the two structures, facilitating the removal of the bent wires and preparing for the next bending, enabling the wire bending action to repeat.

[0035] Simultaneously controlling the slider's movement distance allows for the generation of different bending angles. This application features a simple structure, enabling quick and easy cable bending operations. Its small size makes it portable, facilitating bending needs for various cables and other wires during on-site construction. It is flexible in use and has a wide range of applications.

[0036] Reference Figures 1-3 In one embodiment, the first bending arm 200 includes a first bending frame 2101 and a second bending frame 2102. The top end of the second bending frame 2102 is fixed to the first bending frame 2101 to form a V-shaped support arm with an inclined angle, and the other end is connected to a first rotating wheel. The second bending arm 300 includes a third bending frame 3101 and a fourth bending frame 3102. The top end of the fourth bending frame 3102 is fixed to the third bending frame 3101 to form a V-shaped support arm with an inclined angle, and the other end is connected to a second rotating wheel. The top surfaces of the first rotating wheel and the second rotating wheel are opposite to each other and rotatably connected to form a first wire bending positioning structure 400. The first bending arm 200 and the second bending arm 300 are Y-shaped and symmetrical in structure. The two bending frames of a single bending arm are connected as one unit, which facilitates the assembly and disassembly of the device. The protruding cross-connection of the second bending bracket 2102 and the fourth bending bracket 3102 expands the utilization of the three-dimensional space of the fixed bracket, which helps to form the space design of the first wire bending positioning structure 400 by superimposing the first rotating wheel and the second rotating wheel, making it convenient for wire insertion and improving the wire bending speed.

[0037] like Figure 2 As shown, in one embodiment, the top surfaces of the first rotating wheel 230 and the second rotating wheel 330 face each other, and a rotating shaft connects the first rotating wheel 230 and the second rotating wheel 330. The second wire bending positioning structure 220 and the third wire bending positioning structure 320 are both rollers, and the rollers have grooves that are concave inward toward the rotating shaft. Generally, the groove depth of the rollers is consistent to limit the wire (such as a cable) from being stuck in the groove during bending, meaning the cable only bends on one plane, preventing the cable from sliding on the roller surface and falling off the roller, thus helping to speed up the bending process.

[0038] The first wire bending positioning structure 400, the second wire bending positioning structure 220, and the third wire bending positioning structure 320 are used to abut the wire. In other embodiments, the first wire bending positioning structure 400 formed by connecting the first rotating wheel and the second rotating wheel may also have a groove that is concave in the direction of the rotation axis to prevent the cable from sliding on the surface of the first wire bending positioning structure 400, which helps to speed up the bending efficiency.

[0039] In one embodiment, a pressure bearing is provided between the first rotating wheel 230 and the second rotating wheel 330. The pressure bearing connects the first rotating wheel 230 and the second rotating wheel 330, making it less likely for the first wire bending positioning structure 400 to seize up. Furthermore, when rust occurs due to prolonged disuse, the presence of the pressure bearing makes disassembly of the first rotating wheel 230 and the second rotating wheel 330 simple and convenient.

[0040] refer to Figure 1 On the first bending frame 2101, one roller, i.e., the second wire bending positioning structure 220, is located at the end away from the fixed support. On the third bending frame 3101, another roller, i.e., the third wire bending positioning structure 320, is located at the connecting end away from the slider. When the angle between the first bending frame 2101, the third bending frame 3101, and the double-ended screw 140 is approximately 90 degrees, the two sliders are respectively located at the two top ends of the double-ended screw 140, and the device is in its initial state. The first wire bending positioning structure 400, the second wire bending positioning structure 220, and the third wire bending positioning structure 320 are located on the same side of the first bending frame 2101 and the third bending frame 3101. The straight wire to be bent is placed in the gap between the second wire bending positioning structure 220, the third wire bending positioning structure 320, and the first wire bending positioning structure 400. (Reference) Figure 3 Rotating the double-ended screw 140 causes the two sliders to move towards each other, gradually reducing the distance between them. The included angle between the second bending frame 2102 and the fourth bending frame 3102 near the double-ended screw 140 gradually decreases. The second wire bending positioning structure 220 and the third wire bending positioning structure 320 move closer to the fixed support, while the first wire bending positioning structure 400 moves away from the fixed support. The two ends of the wire are subjected to the compressive pressure from the second wire bending positioning structure 220 and the third wire bending positioning structure 320 pointing in the direction of the double-ended screw 140 (i.e., downward). At the same time, the middle section of the wire is subjected to the compressive pressure from the first wire bending positioning structure 400 away from the direction of the double-ended screw 140 (i.e., upward). The wire bends at the contact point with the first wire bending positioning structure 400. The double-ended screw 140 is rotated in the opposite direction, and the two sliders move away from each other. The included angle between the second bending frame 2102 and the fourth bending frame 3102 near the double-ended screw 140 gradually increases. The second wire bending positioning structure 220 and the third wire bending positioning structure 320 return to their original positions upwards, and the first wire bending positioning structure 400 returns to its original position downwards. The bent wire can then be removed for use. The bending method of the device is simple, making wire bending convenient and quick, and reducing the likelihood of operational errors. The product structure of this embodiment is simple, which not only helps to reduce production difficulty but also assembly difficulty, and its small size makes it easy to carry.

[0041] refer to Figure 4In one embodiment, on the first bending frame 2101, a roller, namely the second wire bending positioning structure 220, is located at the connection end between the first bending frame 2101 and a slider; on the third bending frame 3101, another roller, the third wire bending positioning structure 320, is located at the connection end between the third bending frame 3101 and another slider. When the angle between the first bending frame 2101, the third bending frame 3101, and the double-ended screw 140 is approximately 90 degrees, the positions of the two sliders on the double-ended screw 140 at this time are considered as the initial positions of the sliders. Figure 1 Conversely, in the embodiment, as the two sliders move away from each other, the distance between them gradually increases, and the angle between the second bending frame 2102 and the fourth bending frame 3102 near the double-ended screw 140 gradually increases. The first wire bending positioning structure 400 gradually approaches the double-ended screw 140, generating a downward compressive force on the middle position of the wire. The second wire bending positioning structure 220 and the third wire bending positioning structure 320 always generate upward supporting forces on both sides of the wire. When the first wire bending positioning structure 400 approaches the double-ended screw 140, the wire bends at the contact point with the first wire bending positioning structure 400. Reversing the rotation direction of the double-ended screw, the two sliders move towards each other and gradually approach to return to their original positions. At the same time, the first wire bending positioning structure 400 returns to its original position, and the bent wire can be easily removed from the device.

[0042] refer to Figure 1 In one embodiment, the fixing bracket includes a bracket body 110, which has a sliding groove. The two ends of the sliding groove are provided with a first bearing 120 and a second bearing 130. The first bearing 120 and the second bearing 130 fix the double-ended screw 140 so that its threaded section is in the sliding groove. Placing the threaded section of the double-ended screw 140 in the sliding groove reduces the direct contact between objects outside the sliding groove and the screw surface, protects the double-ended screw 140, and helps to extend the service life of the double-ended screw 140.

[0043] The slider is fitted onto the double-ended screw 140, with one end of the screw 140 protruding from the outer side of the second bearing 130. Rotating the double-ended screw 140 allows the slider to move linearly left and right on it. A power drill is typically used as the driving force. The drill clamps one end of the double-ended screw 140 to rotate it, causing the two sliders to slide towards or away from each other on the screw 140. The first bearing 120 and the second bearing 130 have a counter-bracing structure. To accommodate right-handed operation, the end of the double-ended screw 140 protrudes from the outer side of the second bearing 130. Changing the rotation direction of the double-ended screw 140 changes the relative movement direction of the two sliders. Alternatively, pliers can be used to clamp the end of the double-ended screw 140, allowing it to be rotated manually. When the wire is bent a certain number of times, the threads of the double-ended screw 140 and the slider will wear out significantly, which will affect the smooth movement of the slider. The double-ended screw 140 and the slider need to be replaced. The double-ended screw 140 is fixed by bearings, which makes the replacement of the double-ended screw 140 more convenient and flexible.

[0044] refer to Figure 1 In one embodiment, the top end of the slide groove on the support body 110 has an opening, and the first bearing 120 and the second bearing 130 are fixed to the support body 110 by screws. After removing the second bearing 130, the double-ended screw 140 can be removed from the opening. When the slider and the double-ended screw 140 are severely worn and the device cannot work properly, the replacement of the double-ended screw 140 and the slider is simple and convenient, which helps to extend the overall service life of the device.

[0045] refer to Figure 1 In one embodiment, the first bending frame 2101 has an elongated hole, through which the connecting component passes and fixes the second wire bending positioning structure 220 to the first bending frame 2101; the second bending frame 2102 has an elongated hole, through which the connecting component passes and fixes the third wire bending positioning structure 320 to the third bending frame 3101. The design of the elongated hole allows for changing the vertical distance between the second and third wire bending positioning structures 220 and the first wire bending positioning structure 400, thus accommodating bending of wires of different thicknesses.

[0046] The connecting components can be screws and nuts, or they can be eccentric screws. Eccentric screws can be pressed and locked, making the installation and repositioning of the second wire bending positioning structure 220 or the third wire bending positioning structure 320 quicker.

[0047] refer to Figure 1In one embodiment, a positioning groove is provided on the top surface of the elongated hole. The fixed positions of the second wire bending positioning structure 220 and the third wire bending positioning structure 320 are easy to determine. The diameter of the wire corresponding to different fixed positions is clear, which helps to improve the accuracy of the wire bending angle.

[0048] refer to Figure 1 In one embodiment, a handle 150 is provided on the fixed bracket. The handle 150 is made of plastic and has anti-slip texture. The handle 150 provides a handhold position for the device, facilitating handholding and fixing of the device, and can also effectively prevent fingers from being pinched during bending of the bending component. In this embodiment, for easy observation of the bending state, the handle 150 is located on the bottom surface of the bracket body 110.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable wire bending device with a double-headed screw, characterized in that, The portable wire bending device of the double-headed screw type includes a fixed bracket, on which a double-headed screw, a first bending arm, and a second bending arm are mounted. Slider blocks are respectively threaded onto the two ends of the double-headed screw. The double-headed screw rotates to allow the two sliders to move closer or further apart on the screw. The first bending arm is rotatably fixed to one slider, and the second bending arm is rotatably fixed to the other slider. The first and second bending arms intersect and are rotatably connected. A first wire bending positioning structure is provided at the junction of the first and second bending arms. A second wire bending positioning structure is mounted on the first bending arm, and a third wire bending positioning structure is mounted on the second bending arm. The wire is inserted between the first, second, and third wire bending positioning structures. When the two sliders move closer or further apart, the distance between the second and third wire bending positioning structures and the first wire bending positioning structure changes, thereby bending the wire.

2. The portable wire bending device of the double-headed screw type according to claim 1, characterized in that, The first bending arm includes a first bending frame and a second bending frame. The top end of the second bending frame is fixed to the first bending frame to form a V-shaped support arm with an inclined angle. The other top end of the second bending frame is connected to a first rotating wheel. The second bending arm includes a third bending frame and a fourth bending frame. The top end of the fourth bending frame is fixed to the third bending frame to form a V-shaped support arm with an inclined angle. The other top end of the fourth bending frame is connected to a second rotating wheel. The top surfaces of the first rotating wheel and the second rotating wheel are opposite to each other and rotatably connected to form the first wire bending positioning structure.

3. The portable wire bending device of the double-headed screw type according to claim 2, characterized in that, Both the second wire bending positioning structure and the third wire bending positioning structure are rollers, and the rollers have grooves that are concave in the direction of the rotation axis.

4. The portable wire bending device of the double-headed screw type according to claim 3, characterized in that, On the first bending frame, the roller is located at the connection end between the first bending frame and one of the sliders; on the third bending frame, the roller is located at the connection end between the third bending frame and another slider.

5. The portable wire bending device of the double-headed screw type according to claim 3, characterized in that, On the first bending frame, the roller is located at the connection end away from the slider; on the third bending frame, the roller is located at the connection end away from the slider.

6. The portable wire bending device of the double-headed screw type according to claim 5, characterized in that, The first bending frame has an elongated hole, and the connecting component passes through the center hole and the elongated hole of the roller to fix the roller to the first bending frame; the second bending frame has an elongated hole, and the connecting component passes through the center hole and the elongated hole of the roller to fix the roller to the third bending frame.

7. The portable wire bending device of the double-headed screw type according to claim 1, characterized in that, The fixed bracket includes a bracket body, which has a sliding groove. The two ends of the sliding groove are provided with a first bearing and a second bearing. The first bearing and the second bearing fix the double-ended screw so that its threaded section is in the sliding groove.

8. The portable wire bending device of the double-headed screw type according to claim 7, characterized in that, One end of the double-ended screw protrudes from the outer side of the second bearing or the first bearing to connect to a drive device to rotate the double-ended screw.

9. The portable wire bending device of the double-headed screw type according to claim 7, characterized in that, On the bracket body, the top end of the slide has an opening, and the first bearing and the second bearing are fixed to the bracket body by screws.

10. The portable wire bending device of the double-headed screw type according to claim 2, characterized in that, A pressure bearing is provided between the top surfaces of the first rotating wheel and the second rotating wheel.

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