A bending mechanism

Abstract

This utility model relates to the field of wire bending fixture technology, specifically a wire bending mechanism, including a wire bending assembly, a wire seat assembly, and a linkage assembly. The wire bending assembly includes a rotatable wire bending handle and a wire mold fixed to the wire bending handle. The wire bending handle has a first wire groove, and the outer surface of the wire mold has a U-shaped groove, the curvature of the inner arc surface of the U-shaped groove matching the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire seat assembly has a second wire groove arranged opposite to the first wire groove, which, together with the U-shaped groove, restricts the position of the cable to be bent. The linkage assembly is connected to the wire bending assembly and the wire seat assembly respectively. When the wire bending handle is rotated, the linkage assembly drives the wire seat assembly to move. Through the above structure, the wire seat assembly can follow the movement during the bending process of the cable, avoiding relative displacement of the cable's outer sheath on the wire seat, and further ensuring dimensional accuracy.

Description

Technical Field

[0001] This utility model relates to the field of bending tooling technology, specifically a bending mechanism. Background Technology

[0002] A special-shaped radio frequency (RF) cable is used for link assembly in RF devices. Based on the product's structure and material characteristics, the RF cable needs to be cut and stripped sequentially according to dimensions during processing to form a multi-step cable semi-finished product consisting of an inner conductor, insulation layer, outer conductor, and insulating sheath. This semi-finished product is then bent into a U-shape. Because the cable is very short (approximately 63mm) and consists of multiple steps (inner conductor, insulation layer, outer conductor, and outer sheath), the outer sheath is segmented on both sides of the U-shaped bend. This reduces the adhesion between the outer sheath and the cable, making it prone to shifting during bending, thus affecting the quality of the finished product. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a bending mechanism that can solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A wire bending mechanism includes a wire bending assembly, a wire base assembly, and a linkage assembly. The wire bending assembly includes a rotatable wire bending handle and a wire mold fixed to the wire bending handle. The wire bending handle has a first wire groove, and the outer surface of the wire mold has a U-shaped groove with the curvature of the inner arc surface of the U-shaped groove matching the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire base assembly has a second wire groove arranged opposite to the first wire groove and together with the U-shaped groove, it restricts the position of the cable to be bent. The linkage assembly is connected to the wire bending assembly and the wire base assembly respectively.

[0006] When the cable bending handle is turned, the linkage component drives the cable holder assembly to move, ensuring that the cable bending component and the cable holder assembly maintain the positional constraint of the cable in real time during the bending process.

[0007] Preferably, the linkage component includes a gear and a rack that cooperate with each other. The gear and the wire mold are fixed together on a pivot pin. The rack is disposed on the wire base assembly. The pitch circle radius of the gear is consistent with the bending radius of the U-shaped groove.

[0008] Preferably, it also includes a base, two side plates vertically arranged on the base, and a guide rail arranged on the base and located between the two side plates;

[0009] The bottom surface of the wire seat assembly is mounted on the guide rail via a slider. The two ends of the pivot pin are rotatably connected to the upper parts of the two side plates, and a bearing is provided at the connection between the pivot pin and the side plate.

[0010] Preferably, the wire seat assembly includes a wire seat, a push rod seat, and a push rod;

[0011] The bottom surface of the wire holder is mounted on the guide rail via a slider, and the second wire groove is provided on the upper surface of the wire holder;

[0012] The top rod seat is located on one side of the wire seat and is set at one end of the second wire groove. The top rod seat has a hollow cavity with openings at both ends. One of the openings is connected to one end of the second wire groove.

[0013] The push rod is located inside the hollow cavity, and its two ends extend from the openings at both ends of the hollow cavity. A compression spring is provided inside the hollow cavity and is sleeved on the push rod so that the push rod always has a force toward one end of the second groove.

[0014] Preferably, when the bending handle is not rotated, the bending handle is parallel to the wire seat, and the first wire groove and the second wire groove are located on the same straight line.

[0015] Preferably, the rack is disposed on the upper surface of the wire holder and is located near one side of the wire holder.

[0016] Preferably, the horizontal end of the bending handle away from the first wire groove is provided with a threaded hole, the threaded hole is connected to the first wire groove, and the threaded hole is provided with an adjusting screw, one end of which extends to the outside of the bending handle.

[0017] Preferably, the side of the U-shaped groove that faces away from the U-shaped curved handle is a bend angle compensation surface.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides a wire bending mechanism, including a wire bending assembly, a wire seat assembly, and a linkage assembly. The wire bending assembly includes a rotatable wire bending handle and a wire mold fixed to the wire bending handle. The wire bending handle has a first wire groove, and the outer surface of the wire mold has a U-shaped groove, the curvature of the inner arc surface of the U-shaped groove matching the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire seat assembly has a second wire groove arranged opposite to the first wire groove, which, together with the U-shaped groove, restricts the position of the cable to be bent. The linkage assembly is connected to both the wire bending assembly and the wire seat assembly. When the wire bending handle is rotated, the linkage assembly drives the wire seat assembly to move. Through the above structure, the wire seat assembly can follow the movement of the cable during the bending process, avoiding relative displacement of the cable's outer sheath on the wire seat and further ensuring dimensional accuracy. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural diagram of a bending mechanism of this utility model at one angle;

[0021] Figure 2 This is a three-dimensional structural diagram of a bending mechanism of this utility model from another angle;

[0022] Figure 3 This is a front view of a bending mechanism according to this utility model;

[0023] Figure 4 This is a top view of a bending mechanism according to this utility model;

[0024] Figure 5 yes Figure 4 Sectional view at point AA;

[0025] Figure 6 This is a side view of a bending mechanism according to the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the cable after bending according to this utility model;

[0027] Explanation of icon numbers:

[0028] 1. Bending assembly; 11. Bending handle; 12. Wire mold; 121. U-shaped groove; 1211. Corner compensation surface; 13. Adjusting screw;

[0029] 2. Wire connector assembly; 21. Wire connector; 22. Push rod seat; 23. Push rod; 24. Compression spring; 25. Second wire groove;

[0030] 3. Linkage components; 31. Gear; 32. Rack;

[0031] 4. Base; 5. Side plate; 6. Guide rail; 7. Slider; 8. Turning pin; 9. Bearing; 10. Cable. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0033] See Figures 1 to 7 As shown, the present invention provides a wire bending mechanism, including a wire bending assembly, a wire base assembly, and a linkage assembly. The wire bending assembly includes a rotatable wire bending handle and a wire mold fixed to the wire bending handle. The wire bending handle is provided with a first wire groove, and the outer surface of the wire mold is provided with a U-shaped groove, the curvature of the inner arc surface of the U-shaped groove being adapted to the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire base assembly is provided with a second wire groove arranged opposite to the first wire groove and together with the U-shaped groove, restricts the position of the cable to be bent. The linkage assembly is connected to the wire bending assembly and the wire base assembly respectively.

[0034] When the cable bending handle is turned, the linkage component drives the cable holder assembly to move, ensuring that the cable bending component and the cable holder assembly maintain the positional constraint of the cable in real time during the bending process.

[0035] The beneficial effects of this utility model are:

[0036] This utility model provides a wire bending mechanism, including a wire bending assembly, a wire seat assembly, and a linkage assembly. The wire bending assembly includes a rotatable wire bending handle and a wire mold fixed to the wire bending handle. The wire bending handle has a first wire groove, and the outer surface of the wire mold has a U-shaped groove, the curvature of the inner arc surface of the U-shaped groove matching the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire seat assembly has a second wire groove arranged opposite to the first wire groove, which, together with the U-shaped groove, restricts the position of the cable to be bent. The linkage assembly is connected to both the wire bending assembly and the wire seat assembly. When the wire bending handle is rotated, the linkage assembly drives the wire seat assembly to move. Through the above structure, the wire seat assembly can follow the movement of the cable during the bending process, avoiding relative displacement of the cable's outer sheath on the wire seat and further ensuring dimensional accuracy.

[0037] Preferably, the linkage component includes a gear and a rack that cooperate with each other. The gear and the wire mold are fixed together on a pivot pin. The rack is disposed on the wire base assembly. The pitch circle radius of the gear is consistent with the bending radius of the U-shaped groove.

[0038] As described above, using gears and racks as linkage components results in a simple structure and easy assembly. Furthermore, the pitch circle radius of the gear matches the bending radius of the U-shaped groove, ensuring that the movement distance of the cable holder assembly is synchronized with the cable feed dimension in real time, preventing cable displacement on the cable holder and further ensuring dimensional accuracy.

[0039] Preferably, it also includes a base, two side plates vertically arranged on the base, and a guide rail arranged on the base and located between the two side plates;

[0040] The bottom surface of the wire seat assembly is mounted on the guide rail via a slider. The two ends of the pivot pin are rotatably connected to the upper parts of the two side plates, and a bearing is provided at the connection between the pivot pin and the side plate.

[0041] As can be seen from the above description, the assembly of the wire connector assembly is achieved through the specific structure described above.

[0042] Preferably, the wire seat assembly includes a wire seat, a push rod seat, and a push rod;

[0043] The bottom surface of the wire holder is mounted on the guide rail via a slider, and the second wire groove is provided on the upper surface of the wire holder;

[0044] The top rod seat is located on one side of the wire seat and is set at one end of the second wire groove. The top rod seat has a hollow cavity with openings at both ends. One of the openings is connected to one end of the second wire groove.

[0045] The push rod is located inside the hollow cavity, and its two ends extend from the openings at both ends of the hollow cavity. A compression spring is provided inside the hollow cavity and is sleeved on the push rod so that the push rod always has a force toward one end of the second groove.

[0046] As described above, with the specific structure described above, when the semi-finished cable is placed into the cable holder, the push rod is first pulled out from the end away from the second cable groove. After the semi-finished cable is placed into the cable holder, the push rod is released. Under the action of the compression spring, the push rod abuts against one end of the semi-finished cable and always has a force towards the end of the second cable groove in this state.

[0047] Preferably, when the bending handle is not rotated, the bending handle is parallel to the wire seat, and the first wire groove and the second wire groove are located on the same straight line.

[0048] As described above, the placement of semi-finished cables in a straight line is required.

[0049] Preferably, the rack is disposed on the upper surface of the wire holder and is located near one side of the wire holder.

[0050] As can be seen from the above description, a reasonable layout can be achieved through the specific settings described above.

[0051] Preferably, the horizontal end of the bending handle away from the first wire groove is provided with a threaded hole, the threaded hole is connected to the first wire groove, and the threaded hole is provided with an adjusting screw, one end of which extends to the outside of the bending handle.

[0052] As described above, fine adjustments can be made by setting an adjusting screw, and the push rod applies a certain thrust to the cable through a compression spring to ensure that the cable rests against the adjusting screw.

[0053] Preferably, the side of the U-shaped groove that faces away from the U-shaped curved handle is a bend angle compensation surface.

[0054] As described above, setting a bend compensation surface can cause the cable to be bent excessively. Since the bent cable has a certain rebound force, the rebound force can offset the excessive bending, so that the final bending angle reaches the preset target angle.

[0055] Example 1

[0056] See Figures 1 to 7As shown, the present invention provides a wire bending mechanism, including a wire bending component 1, a wire base component 2, a linkage component 3, a base 4, two side plates 5 vertically arranged on the base, and a guide rail 6 arranged on the base and located between the two side plates.

[0057] The bottom surface of the wire seat assembly 2 is mounted on the guide rail 6 via a slider. The wire seat assembly 2 includes a wire seat 21, a push rod seat 22, and a push rod 23.

[0058] The bottom surface of the wire base 21 is mounted on the guide rail 6 via the slider 7, and the second wire groove 25 is provided on the upper surface of the wire base 21.

[0059] The top rod seat 22 is located on one side of the wire seat 21 and is set at one end of the second wire groove. The top rod seat 22 has a hollow cavity with openings at both ends. One of the openings at both ends is connected to one end of the second wire groove.

[0060] The push rod 23 is disposed within the hollow cavity, with both ends of the push rod 23 extending from the openings at both ends of the hollow cavity. A compression spring 24 is disposed within the hollow cavity and is sleeved on the push rod 23, ensuring that the push rod always exerts a force towards the end of the second wire groove. When the semi-finished cable 10 is placed into the wire seat, the push rod is first pulled out from the end furthest from the second wire groove. After the semi-finished cable is placed into the wire seat, the push rod is released. Under the action of the compression spring, the push rod rests against one end of the semi-finished cable and, in this state, always exerts a force towards the end of the second wire groove.

[0061] The bending assembly 1 includes a rotatable bending handle 11 and a wire mold 12 fixed on the bending handle. The bending handle 11 is provided with a first wire groove, and the outer side of the wire mold 12 is provided with a U-shaped groove 121. The curvature of the inner arc surface of the U-shaped groove is adapted to the curvature of the outer side of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other.

[0062] The cable connector assembly 2 is provided with a second cable groove 25 that is opposite to the first cable groove and together with the U-shaped groove, restricts the position of the cable 10 to be bent.

[0063] The linkage component 3 is connected to the bending component 1 and the wire seat component 2 respectively. Specifically, the linkage component 3 includes a gear 31 and a rack 32 that cooperate with each other. The gear 31 and the wire mold 12 are fixed together on a pivot pin 8. The two ends of the pivot pin 8 are rotatably connected to the upper parts of the two side plates 5 respectively. A bearing 9 is provided at the connection between the pivot pin 8 and the side plates 5. Specifically, the rack 32 is located on the upper surface of the wire seat and is positioned near the side of the wire seat 21. The pitch circle radius of the gear 31 is consistent with the bending radius of the U-shaped groove. Using gears and racks as linkage components results in a simple structure and easy assembly. Furthermore, the consistency between the pitch circle radius of the gear and the bending radius of the U-shaped groove ensures that the movement distance of the wire seat component is synchronized with the cable feed size in real time, preventing cable displacement on the wire seat and further ensuring dimensional accuracy.

[0064] When the bending handle is turned, the linkage component 3 drives the cable holder component 2 to move, so as to ensure that the bending component and the cable holder component maintain the position restriction of the cable 10 in real time during the bending process.

[0065] When the bending handle is not rotated, the bending handle 11 is parallel to the wire seat 21, and the first wire groove and the second wire groove are on the same straight line.

[0066] Preferably, the horizontal end of the bending handle 11 away from the first wire groove has a threaded hole, which communicates with the first wire groove. The threaded hole has an adjusting screw 13, one end of which extends to the outside of the bending handle 11. By setting the adjusting screw, fine adjustments can be made. The push rod applies a certain thrust to the cable through the compression spring, ensuring that the cable rests against the adjusting screw.

[0067] The side of the U-shaped groove 121 facing away from the bending handle is a bend compensation surface 1211. By providing this bend compensation surface, the cable can be excessively bent. Since the bent cable has a certain spring force, this spring force can offset the excessive bending, ensuring that the final bending angle reaches the preset target angle. Specifically, the compensation angle of the bend compensation surface 1211 is set according to actual needs.

[0068] The working principle of the bending mechanism of this utility model is as follows:

[0069] The semi-finished cable is placed on the cable holder, with one end inserted into the cavity formed by the cable mold and the bending handle. The adjusting screw allows for minor adjustments to the insertion depth. A push rod, via a spring, applies a certain thrust to the cable, ensuring it rests firmly against the adjusting screw. A gear and rack mechanism is installed on one side of the cable mold; the gear is concentrically fixed to a pivot pin, and the rack is fixed to the cable holder, allowing for effective meshing. The gear's pitch circle matches the U-shaped radius of the cable mold. When the bending handle is rotated clockwise, the cable is bent into the finished product. The push rod ensures reliable cable positioning during bending. During bending, the gear and rack mechanism moves the cable holder to the left. Because the gear's pitch circle matches the bending radius, the cable holder's movement distance is synchronized with the cable's leftward feed, preventing relative displacement of the cable's outer sheath on the cable holder and further ensuring dimensional accuracy.

[0070] This utility model has been described with reference to the above-described embodiments and accompanying drawings. However, the above embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. On the contrary, modifications and equivalent provisions included in the spirit and scope of the claims are all included within the scope of this utility model.

Claims

1. A wire bending mechanism, characterized by: The device includes a bending assembly, a wire base assembly, and a linkage assembly. The bending assembly includes a rotatable bending handle and a wire mold fixed to the bending handle. The bending handle has a first wire groove, and the outer surface of the wire mold has a U-shaped groove. The curvature of the inner arc surface of the U-shaped groove matches the curvature of the outer surface of the cable to be bent. The first wire groove and the U-shaped groove are arranged opposite to each other. The wire base assembly has a second wire groove arranged opposite to the first wire groove and together with the U-shaped groove, it restricts the position of the cable to be bent. The linkage assembly is connected to the bending assembly and the wire base assembly respectively. When the cable bending handle is turned, the linkage component drives the cable holder assembly to move, ensuring that the cable bending component and the cable holder assembly maintain the positional constraint of the cable in real time during the bending process.

2. A wire bending mechanism according to claim 1, characterized in that: The linkage component includes a gear and a rack that cooperate with each other. The gear and the wire mold are fixed together on a pivot pin, and the rack is located on the wire base assembly.

3. A wire bending mechanism according to claim 2, wherein: It also includes a base, two side plates vertically mounted on the base, and a guide rail mounted on the base and located between the two side plates; The bottom surface of the wire seat assembly is mounted on the guide rail via a slider. The two ends of the pivot pin are rotatably connected to the upper parts of the two side plates, and a bearing is provided at the connection between the pivot pin and the side plate.

4. A wire bending mechanism according to claim 3, wherein: The wire seat assembly includes a wire seat, a push rod seat, and a push rod; The bottom surface of the wire holder is mounted on the guide rail via a slider, and the second wire groove is provided on the upper surface of the wire holder; The top rod seat is located on one side of the wire seat and is set at one end of the second wire groove. The top rod seat has a hollow cavity with openings at both ends. One of the openings is connected to one end of the second wire groove. The push rod is located inside the hollow cavity, and its two ends extend from the openings at both ends of the hollow cavity. A compression spring is provided inside the hollow cavity and is sleeved on the push rod so that the push rod always has a force toward one end of the second groove.

5. A wire bending mechanism according to claim 4, wherein: When the bending handle is not rotated, the bending handle is parallel to the wire seat, and the first wire groove and the second wire groove are on the same straight line.

6. A wire bending mechanism according to claim 4, wherein: The rack is located on the upper surface of the wire holder and is positioned near one side of the wire holder.

7. A wire bending mechanism according to claim 2, wherein: The pitch circle radius of the gear is the same as the bending radius of the U-shaped groove.

8. A wire bending mechanism according to claim 1, wherein: The bending handle has a threaded hole at its horizontal end away from the first wire groove. The threaded hole communicates with the first wire groove. The threaded hole has an adjusting screw, and one end of the adjusting screw extends to the outside of the bending handle.

9. A wire bending mechanism according to claim 1, wherein: The side of the U-shaped groove corresponding to the U-shaped handle away from the curved line is the corner compensation surface.

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