Cable assembly straightening device

Abstract

The utility model relates to the technical field related to drawing and straightening of metal wires, and discloses a cable assembly straightening device, which is used for straightening a cable assembly and comprises a fixed seat, a punching ring and a straightening cylinder, a first through hole is formed in the center of the fixed seat; the first through hole comprises a connector section, a semi-steel cable section and a straightening cylinder section which are concentric with one another and are respectively used for fixing the ends of the connector and the semi-steel cable and radially limiting the straightening cylinder when the straightening cylinder extends into the connector section, the semi-steel cable section and the straightening cylinder section; a second through hole is formed in the center of the straightening cylinder and used for containing the semi-steel cable, one end of the straightening cylinder extends out of a cylinder cap along the cross section, and the cylinder cap is used for bearing the thrust of the punching ring perpendicular to the cylinder cap; the punching ring is cylindrical, and the inner diameter of the punching ring is between the outer diameter of the straightening cylinder and the width of the two extending ends of the cylinder cap. The utility model aims to provide a simple device, so as to straighten a cable assembly, improve the attractiveness, and contribute to improving the transmission efficiency and reducing the standing wave reflectance, thereby improving the transmission quality and stability of signals.

Description

Technical Field

[0001] This utility model relates to the technical field of drawing and straightening metal wires, and in particular to a cable assembly straightening device. Background Technology

[0002] The existing straightening technology for semi-steel cables uses rollers, which clamp the cable with several correspondingly arranged straightening rollers. As the cable moves, it is straightened in both the horizontal and vertical directions. This method is highly efficient, and the distance between the rollers can be adjusted to accommodate cables of different diameters.

[0003] After the semi-steel cable is soldered to the RF connector, the connector, being a square disc structure perpendicular to the cable, cannot be straightened using rollers, making roller methods unsuitable for cable straightening. Furthermore, due to the inherent rigidity of the semi-steel cable, methods such as bending or tilting to change the end curvature are not ideal, often requiring multiple applications of external force and easily causing damage to the cable's protective layer. Even if skilled workers can straighten the cable while simultaneously adjusting its shape, the efficiency is low, and the accuracy needs improvement.

[0004] Some semi-steel cable assemblies are required for use in microwave transmission feeder systems, thus demanding a straightness requirement of less than 0.05 for the cable section. Before soldering to the RF connector, the cable section must be perpendicular to the connector interface; this is especially important for waveguide rotary joint products, where the cable passes through the waveguide cavity to minimize impact on transmission frequency, VSWR, and phase consistency. This necessitates that the cable axis be perfectly aligned with the waveguide cavity axis before assembly. Existing soldering processes, including cable bending and deformation during welding, prevent the cable assembly from meeting the straightness and perpendicularity design requirements, and also negatively impact aesthetics.

[0005] The purpose of this invention is to provide a simple device for straightening cable assemblies before welding radio frequency connectors to semi-steel cables. Utility Model Content

[0006] To address existing problems, this utility model provides a cable assembly straightening device, which aims to straighten the cable assembly before welding the RF connector and the semi-steel cable so that the core wire of the cable coincides with the inner cavity axis of the connector. This improves aesthetics, helps to increase transmission efficiency, reduce standing wave reflection ratio, and improve phase consistency, thereby improving signal transmission quality and stability.

[0007] To achieve the above objectives, the present invention provides the following technical solution.

[0008] A cable assembly straightening device for straightening cable assemblies, characterized in that it includes a fixing base, a punch ring, and a straightening cylinder; the cable assembly includes a connector and a semi-steel cable; the fixing base has a first through hole at its center; the first through hole includes a connector segment, a semi-steel cable segment, and a straightening cylinder segment that are concentric with each other, respectively used to radially limit the connection of the connector, the end of the semi-steel cable, and the straightening cylinder when it extends; the straightening cylinder has a second through hole at its center for accommodating the semi-steel cable, and one end of the straightening cylinder extends outward along its cross-section to form a cap; the cap is used to withstand the thrust of the punch ring; the punch ring is cylindrical, and its inner diameter is between the outer diameter of the straightening cylinder and the width of the two ends of the cap extending outward.

[0009] As a further improvement of this utility model, it also includes a guide cylinder; the end of the guide cylinder is narrowed radially, the narrowed end extends into the straightening cylinder section, and the guide cylinder forms a platform that can fit against the fixed seat; the guide cylinder is provided with a third through hole at the center along the length of the cylinder, and the third through hole is connected to the straightening cylinder.

[0010] As a further improvement of this utility model, the guide cylinder is provided with a guide groove on the side of the cylinder along the length of the cylinder, and the guide groove is connected to the third through hole and the guide groove is connected to the cap of the straightening cylinder.

[0011] As a further improvement of this utility model, the length of the guide groove is greater than the length of the straightening cylinder.

[0012] As a further improvement of this utility model, it also includes a fixing sleeve for extending the length of the straightening device; the fixing sleeve is provided with a fourth through hole; the fourth through hole includes a first straightening cylinder section, a semi-steel cable section and a second straightening cylinder section that are concentric with each other, which are used to radially limit the straightening cylinder, the end of the semi-steel cable and the next straightening cylinder when they are inserted.

[0013] As a further improvement of this utility model, the outer diameter of the fixing sleeve is smaller than the width of the two ends of the protruding cap.

[0014] As a further improvement of this utility model, the material of the fixing base is cast iron or steel.

[0015] As a further improvement of this utility model, the material of the straightening cylinder is an alloy material.

[0016] As a further improvement of this utility model, the thickness of the punching ring is smaller than the radius of the straightening cylinder.

[0017] As a further improvement of this utility model, the surface roughness of the punch ring is less than 1 μm.

[0018] This utility model has the following beneficial effects:

[0019] This utility model features simple components and a clear structure. By incorporating a fixing base, a punching ring, and a straightening cylinder, it achieves precise straightening of cable assemblies, particularly the ends of the fixed connector and the semi-steel cable. The different sections of the first through hole ensure radial fixation of the fixed connector, the end of the semi-steel cable, and the straightening cylinder when inserted. The impact of the punching ring on the cylinder cap provides pressure to the straightening cylinder, thereby straightening the semi-steel cable. The linear movement of the punching ring in the vertical direction of the connector is more precise; relying on the inertia of the punching ring, the impact is also less strenuous than straightening by hand.

[0020] Preferably, the end of the guide tube narrows and extends into the straightening tube section, forming a fitting platform, which helps to provide better guidance and stability during placement and operation. The third through-hole design of the guide tube allows the straightening tube to be placed and positioned easily.

[0021] Preferably, the guide groove is provided for placing the straightening cylinder cap, further enhancing the verticality, stability, and ease of operation of the device. The guide groove provides a track for the punch ring to slide up and down, improving the concentricity of the punch ring impact and thus enhancing the accuracy and efficiency of straightening.

[0022] Preferably, the guide groove is longer than the length of the straightening cylinder, providing additional space for the installation of the straightening cylinder, resulting in a larger fitting space between the cylinder cap and the guide groove, which can increase the sliding distance of the punching ring and thus increase the maximum punching force.

[0023] Preferably, the design of the fixing sleeve can extend the length of the straightening device, making it suitable for straightening longer or more complex cable assemblies; the different sections of the fourth through hole ensure precise radial positioning of each component during the straightening process, improving the straightness and perpendicularity of the straightening device.

[0024] Preferably, the outer diameter of the fixing sleeve is smaller than the width of the two ends of the extended cylinder cap, which ensures that the fixing sleeve and the punch ring do not interfere with each other during sliding, thus ensuring the smooth progress of the straightening process.

[0025] Preferably, the mounting base is made of copper alloy, cast iron, or steel. These materials are heavy, have high strength and good wear resistance, ensuring the stability and durability of the mounting base.

[0026] Preferably, the straightening cylinder is made of an alloy material, which has excellent strength and hardness and can withstand the pressure and wear during the straightening process, ensuring the straightening effect.

[0027] Preferably, the thickness of the punch ring is smaller than the radius of the straightening cylinder, which ensures that the punch ring can avoid slipping when thrust is applied, and the impact surface accounts for a relatively large proportion of the surface area of ​​the punch ring, thus avoiding damage or deformation caused by excessive stress generated by the impact force.

[0028] Preferably, the surface roughness of the punch ring is less than 1 μm. Lower surface roughness helps reduce friction and wear, and improves the contact efficiency and lifespan between the punch ring and the cap. It also helps improve the accuracy and stability of the straightening process. Attached Figure Description

[0029] The accompanying drawings described herein are for illustrative purposes only and do not limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings:

[0030] Figure 1 This is a schematic cross-sectional view of a cable assembly straightening device as described in Example 1;

[0031] Figure 2 The images show the front view (a) and left view (b) of the straightening cylinder structure of the cable assembly straightening device described in Example 1.

[0032] Figure 3 The images show the front view (a) and left view (b) of the punch ring structure of the cable assembly straightening device described in Example 1.

[0033] Figure 4 The front view (a) and left view (b) of the guide cylinder structure of the cable assembly straightening device described in Embodiment 1 are shown.

[0034] Figure 5 The images show the front view (a) and left view (b) of the fixing sleeve structure of the cable assembly straightening device described in Example 1.

[0035] Figure 6 The images show a cross-sectional view (a) and a perspective view (b) of a cable assembly straightening device as described in Example 2.

[0036] Figure 7 The diagram shows the structure of the RF connector in Examples 1 and 2 (a) and the assembly diagram of the connector and the semi-steel cable (b).

[0037] The components include: 1. Semi-steel cable; 2. Fixing base; 3. Guide cylinder; 4. Punching ring; 5. Straightening cylinder; 6. Fixing sleeve; 7. Guide groove; 8. Cylinder cap; 9. Connector; 10. Welding point. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0039] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example 1

[0042] like Figure 1 The cable assembly straightening device shown includes a fixing base 2, a punching ring 4, and a straightening cylinder 5.

[0043] like Figure 1 As shown, the fixing base 2 has a first through hole at its center. The first through hole includes a connector section, a semi-steel cable section, and a straightening cylinder section that are concentrically positioned, serving to radially limit the insertion of the fixing connector 9, the end of the semi-steel cable 1, and the straightening cylinder 5. The connector section of the first through hole can be square, circular, or other shapes corresponding to the fixing connector 9. The semi-steel cable section of the first through hole is a circular hole with a smaller aperture area compared to the connector section, corresponding to the outer diameter of the end of the semi-steel cable 1. The straightening cylinder section of the first through hole is a circular hole with a larger aperture compared to the semi-steel cable section, corresponding to the outer diameter of the straightening cylinder 5. The fixing base 2 is shaped like a square or round disc to lower the center of gravity and maintain the overall stability of the upper cable straightening device. The fixing base 2 is made of cast iron or steel.

[0044] like Figure 2As shown, the straightening cylinder 5 has a second through hole at its center for accommodating the semi-steel cable 1, and one end of the straightening cylinder 5 extends outward along its cross-section from the cap 8. The cap 8 is used to withstand the thrust of the punch ring 4 to straighten the semi-steel cable 1. The straightness of the straightening cylinder 5 is standard, while the cap 8 is perpendicular to the cylinder body at 90°. The straightening cylinder 5 should not be made too long; otherwise, because the semi-steel cable 1 may have a certain curvature, it will be difficult for the straightening cylinder 5 to fit over the semi-steel cable 1. The straightening cylinder 5 is made of alloy material, which is lightweight, durable, wear-resistant, and impact-resistant.

[0045] like Figure 3 As shown, the punching ring 4 is cylindrical, with its inner diameter between the outer diameter of the straightening cylinder 5 and the width of both ends of the extended cap 8. The thickness of the punching ring 4 is less than the radius of the straightening cylinder 5 to avoid stress concentration or even slippage when the punching ring 4 impacts the cap 8. The punching ring 4 is made of 45 steel. The surface roughness of the punching ring 4 is less than 1 μm to reduce sliding friction and save manpower.

[0046] like Figure 4 As shown, a cable assembly straightening device in this embodiment further includes a guide cylinder 3 for further filling the annular space between the straightening cylinder 5 and the straightening cylinder section of the fixing seat 2. The end of the guide cylinder 3 narrows radially, and the narrowed end extends into the straightening cylinder section. The guide cylinder 3 forms a platform that can fit against the fixing seat 2, and the fitting clearance between the end of the guide cylinder 3 and the fixing seat 2 is H7 / k6 or H7 / J6. The narrowing and extension into the straightening cylinder section to form a fitting platform helps to provide better guidance and stability during placement and operation. The third through hole design of the guide cylinder 3 allows the straightening cylinder 5 to be easily placed and positioned.

[0047] A third through hole is provided inside the guide cylinder 3 for placing the straightening cylinder 5. The fitting clearance between the guide cylinder 3 and the straightening cylinder 5 is 0.01 to 0.02 mm. The use of the guide cylinder 3 helps to align the end of the semi-steel cable 1 with the straightening cylinder section of the fixing seat 2 coaxially, and also facilitates the straightening of the punch ring 4 along the direction perpendicular to the fixing seat 2.

[0048] The punching ring 4 can slide along the outside of the guide cylinder 3 to generate impact. The fit between the punching ring 4 and the guide cylinder 3 is a clearance fit of 0.2-0.4 mm. The guide cylinder 3 has a guide groove 7 along its length on its side, and the guide groove 7 communicates with the third through hole for placing the caps 8 of the symmetrically extended straightening cylinder 5. The opening length of the guide groove 7 is the sliding space of the cap 8; the longer the groove, the greater the momentum accumulated by the movement of the punching ring 4. The greater the momentum impacting the cap 8, the greater the compressive force of the straightening cylinder 5. The guide groove 7 is longer than the length of the straightening cylinder 5. This design ensures that the straightening cylinder 5 has space to slide within the guide groove 7 to generate impact force.

[0049] The operating principle of this embodiment is as follows:

[0050] Insert the semi-steel cable 1 into the punch ring 4;

[0051] Insert the semi-steel cable 1 into the second through hole of the straightening cylinder 5;

[0052] Insert the straightening cylinder 5 into the third through hole of the guide cylinder 3;

[0053] Place the RF connector 9 into the connector section of the mounting base 2, and then extend the semi-steel cable 1 through the semi-steel cable section of the mounting base 2 into the cable slot of the connector 9 until the two are securely connected.

[0054] Insert the narrowed end of the guide tube 3 into the straightening section of the fixed base 2;

[0055] The punch ring 4 is lifted high and allowed to fall freely, striking the cap 8 of the straightening cylinder 5;

[0056] Use a gauge to check the straightness of the semi-steel cable 1 and the perpendicularity between the connector 9 and the semi-steel cable 1. If the requirements are not met, repeat the previous step until the requirements are met.

[0057] In this embodiment, the RF connector is an SMA connector, and the connection between connector 9 and the semi-steel cable 1 is a flange connection followed by soldering. After straightening, connector 9 and semi-steel cable 1 are removed from the straightening device, as follows: Figure 7 As shown, the two can be soldered together. After the core portion of the semi-steel cable 1 extends into the connector 9, it is then soldered through the soldering point 10.

[0058] Example 2

[0059] The main difference from Embodiment 1 is that: the cable assembly straightening device described in Embodiment 2, such as... Figure 5 As shown, it also includes a fixing sleeve 6 for extending the length of the straightening device; the fixing sleeve 6 is provided with a fourth through hole; the third through hole includes a first straightening cylinder section, a semi-steel cable section and a second straightening cylinder section that are concentric with each other, which are used to radially limit the straightening cylinder 5, the end of the semi-steel cable 1 and the next straightening cylinder 5 when they are inserted.

[0060] like Figure 6 As shown, the length of the straightening device can be extended after using the fixing sleeve 6. Several straightening cylinders 5 can be placed in pairs along the semi-steel cable 1, and each pair of straightening cylinders 5 straightens different cable segments of the semi-steel cable 1 in opposite directions; several punching rings 4 strike the punching rings 4 in each cable segment accordingly to achieve segmented straightening.

[0061] The outer diameter of the fixing sleeve 6 is smaller than the width of the two ends of the tube cap 8.

[0062] In summary, this utility model features simple components and a clear structure. By incorporating a fixing base, a punching ring, and a straightening cylinder, it achieves precise straightening of cable assemblies, particularly the ends of fixed connectors and semi-steel cables. The different sections of the first through hole ensure radial fixation of the fixed connector, the end of the semi-steel cable, and the straightening cylinder when inserted. The impact of the punching ring on the cylinder cap provides pressure for straightening. The linear movement of the punching ring in the vertical direction of the connector is more precise, and relying on the inertia of the punching ring, the impact is less strenuous than straightening by hand. The guide groove is used to place the straightening cylinder cap, further enhancing the verticality, stability, and ease of operation of the device. The guide groove provides a track for the punching ring to slide up and down, improving the concentricity of the punching ring's impact and thus improving the accuracy and efficiency of straightening. The design of the fixing sleeve can extend the length of the straightening device, suitable for straightening longer or more complex cable assemblies. The surface roughness of the punching ring is less than 1μm; this lower surface roughness helps reduce friction and wear, improving the contact efficiency and lifespan between the punching ring and the cylinder cap. At the same time, it also helps to improve the accuracy and stability of the calibration process.

[0063] The device disclosed in this utility model is also applicable to SMP, 2.92 RF connectors, and threaded and press-fit connections. Straightening the semi-steel cable to the connector ensures that the cable core wires coincide with the connector's inner cavity axis, improving aesthetics, increasing transmission efficiency, reducing standing wave reflection ratio, and improving phase consistency, thereby improving signal transmission quality and stability.

[0064] The above embodiments are merely one of the implementation methods for achieving the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions, and other implementation methods that are easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cable assembly straightening device for straightening cable assemblies, characterized in that, The cable assembly includes a fixing seat (2), a punch ring (4), and a straightening cylinder (5); the cable assembly includes a connector (9) and a semi-steel cable (1); the fixing seat (2) has a first through hole at its center; the first through hole includes a connector section, a semi-steel cable section, and a straightening cylinder section that are concentric with each other, which are used to radially limit the ends of the fixing connector (9), the semi-steel cable (1), and the straightening cylinder (5) when they are inserted; the straightening cylinder (5) has a second through hole at its center for accommodating the semi-steel cable (1), and one end of the straightening cylinder (5) extends outward along the cross section to form a cap (8); the cap (8) is used to withstand the thrust of the punch ring (4); the punch ring (4) is cylindrical, and its inner diameter is between the outer diameter of the straightening cylinder (5) and the width of the two ends of the cap (8) extending outward.

2. The cable assembly straightening device according to claim 1, characterized in that, It also includes a guide cylinder (3); the end of the guide cylinder (3) is narrowed in the radial direction, the narrowed end extends into the straightening cylinder section, and the guide cylinder (3) forms a platform that can fit with the fixed seat (2); the guide cylinder (3) has a third through hole at the center along the cylinder length direction, and the third through hole is connected to the straightening cylinder (5).

3. The cable assembly straightening device according to claim 2, characterized in that, The guide cylinder (3) has a guide groove (7) on its side along the length of the cylinder, and the guide groove (7) is connected to the third through hole. The guide groove is connected to the cap (8) of the straightening cylinder (5).

4. The cable assembly straightening device according to claim 3, characterized in that, The length of the guide groove (7) is greater than the length of the straightening cylinder (5).

5. A cable assembly straightening device according to claim 3, characterized in that, It also includes a fixing sleeve (6) for extending the length of the straightening device; the fixing sleeve (6) is provided with a fourth through hole; the fourth through hole includes a first straightening cylinder section, a semi-steel cable section and a second straightening cylinder section that are concentric with each other, respectively used to radially limit the insertion of the straightening cylinder (5), the end of the semi-steel cable (1) and the next straightening cylinder (5).

6. A cable assembly straightening device according to claim 5, characterized in that, The outer diameter of the fixing sleeve (6) is smaller than the width of the two ends of the tube cap (8).

7. A cable assembly straightening device according to claim 1, characterized in that, The material of the fixing seat (2) is cast iron or steel.

8. A cable assembly straightening device according to claim 1, characterized in that, The material of the straightening cylinder (5) is an alloy material.

9. A cable assembly straightening device according to claim 1, characterized in that, The thickness of the punching ring (4) is less than the radius of the straightening cylinder (5).

10. A cable assembly straightening device according to claim 1, characterized in that, The surface roughness of the punch ring (4) is less than 1 μm.

Images