An automatic straightening device for power cable production line

Abstract

The application provides an automatic straightening device for a power cable production line, comprising a cable straightening structure, which comprises sliding blocks, the number of the sliding blocks is four, two of the sliding blocks are a group, two groups of the sliding blocks are symmetrically distributed on the two sides of the inner wall of a guide structure, a second bolt hole is formed in one side of the interior of the sliding block, a connecting block is arranged on the other side of the sliding block, and a rotating shaft is rotatably connected to the interior of the connecting block. The application is rationally designed, the guide structure can drive the cable straightening structure in the interior to rotate by driving multiple rotatable guide structures, multiple cable straightening structures can extrude the cable from different directions, the straightening wheel pushes the outer wall of the cable inward to be combined, the cable can be extruded from different directions by the straightening wheel in the moving process, and thus the cable can be straightened from multiple angles.

Description

Technical Field

[0001] This invention mainly relates to the field of power cable production, and specifically to an automatic straightening device for a power cable production line. Background Technology

[0002] During the continuous production process of power cables (such as extrusion, cross-linking, cooling, cabling, armoring, sheathing, etc.), the cable core, semi-finished or finished cables will inevitably be subjected to traction force, torsional force, thermal stress or mechanical stress, resulting in irregular deformations such as bending, twisting, serpentine or spiral shapes.

[0003] These deformations not only affect the appearance quality of the cable, but more importantly, they severely impact its electrical properties (such as insulation eccentricity and localized electric field distortion) and mechanical properties (such as conductor stress concentration and increased risk of sheath damage). This is especially true for high-voltage, ultra-high-voltage cables, and special cables used in precision instruments, where the requirements for straightness are extremely stringent.

[0004] Therefore, installing straightening devices at key stations in the cable production line (such as before entering the testing equipment and before winding) is a crucial step in ensuring the final quality and performance of the cable. The purpose is to eliminate the plastic or elastic deformation that occurs during cable movement, ensuring it meets the specified straightness requirements.

[0005] During the operation of specific embodiments, the inventors discovered the following defects:

[0006] Existing straightening roller assemblies often only allow for single-direction (vertical or horizontal) gap adjustment, meaning they can only apply pressure to the cable in either the vertical or horizontal direction. Even when arranged in a cross pattern, their individual adjustment directions are fixed and independent. In actual production, cable deformation is often a multi-dimensional, complex deformation, such as simultaneous vertical and horizontal bending, sometimes accompanied by helical twisting. Existing fixed-direction adjustment devices are ineffective or powerless in correcting such complex deformations. For example, a device that can only correct vertical bending is ineffective against horizontal bending or twisting, and vice versa.

[0007] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0008] 1. The technical problem that the invention aims to solve:

[0009] This invention provides an automatic straightening device for a power cable production line to solve the technical problems existing in the background art.

[0010] 2. Technical Solution:

[0011] To achieve the above objectives, the technical solution provided by the present invention is as follows: an automatic straightening device for a power cable production line, comprising a support structure, wherein a guide structure is provided inside the support structure, and cable straightening structures are provided on both sides of the inner wall of the guide structure;

[0012] A cable straightening structure includes four sliding blocks, with two sliding blocks forming a group. The two groups of sliding blocks are symmetrically distributed on both sides of the inner wall of the guide structure. A second pin hole is provided on one side of the sliding block, and a connecting block is provided on the other side of the sliding block. A rotating shaft is rotatably connected inside the connecting block. A mating hole is provided inside the rotating shaft. A double-ended lead screw is provided between the mating holes of the two rotating shafts, and the double-ended lead screw and the mating hole are mutually engaged.

[0013] Furthermore, the support structure includes a support frame, a vertical rod at the top of the support frame, a guide ring at the top of the vertical rod, and a plurality of guide rings. A screw body is rotatably connected inside the vertical rod.

[0014] Furthermore, a guide groove is provided inside the guide ring, and a connecting groove is provided at the bottom of the guide groove.

[0015] Furthermore, the guide structure includes a rotating ring, the outer wall of which is provided with a turbine ring, the turbine ring cooperating with the screw body, and first pin holes are opened on both sides inside the rotating ring, and the rotating ring is slidably connected to the inner wall of the guide groove.

[0016] Furthermore, the sliding block is slidably connected to the inner wall of the rotating ring, a rotating rod is rotatably connected to the inner side of the connecting block, and a straightening wheel is rotatably connected between the two rotating rods.

[0017] Furthermore, the longitudinal section of the sliding block is U-shaped, and a pin is provided between the second pin hole and the first pin hole inside the sliding block.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0020] This invention uses multiple rotatable guide structures to drive the internal cable straightening structures to rotate. These multiple cable straightening structures can squeeze the cable from different directions, while the straightening wheels push inward to fit against the outer wall of the cable. During the movement, the cable can be squeezed from different directions by the straightening wheels, thereby achieving multi-angle straightening of the cable. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the support structure of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the guide structure of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the cable straightening structure of the present invention.

[0025] Figure label:

[0026] 1. Support structure; 101. Support frame; 102. Vertical rod; 103. Guide ring; 104. Guide groove; 105. Connecting groove; 106. Screw body; 2. Guide structure; 201. Rotating ring; 202. First pin hole; 3. Cable straightening structure; 301. Sliding block; 302. Second pin hole; 303. Connecting block; 304. Rotating shaft; 305. Rotating rod; 306. Straightening wheel; 307. Double-ended lead screw. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "page," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0031] See attached document Figure 1-4 An automatic straightening device for a power cable production line includes a support structure 1, a guide structure 2 is provided inside the support structure 1, and cable straightening structures 3 are provided on both sides of the inner wall of the guide structure 2.

[0032] The cable straightening structure 3 includes four sliding blocks 301, arranged in groups of two. These two groups of sliding blocks 301 are symmetrically distributed on both sides of the inner wall of the guide structure 2. One side of each sliding block 301 has a second pin hole 302, and the other side has a connecting block 303. A rotating shaft 304 is rotatably connected inside the connecting block 303. A mating hole is provided inside the rotating shaft 304. A double-ended lead screw 307 is positioned between the mating holes of the two rotating shafts 304, engaging with the mating hole. The sliding blocks 301 are slidably connected to the inner wall of the rotating ring 201, and a rotating shaft 304 is rotatably connected to the inner side of the connecting block 303. A rod 305 is rotatably connected between two rotating rods 305, and a straightening wheel 306 is rotatably connected between them. The longitudinal section of the sliding block 301 is U-shaped. A pin is provided between the second pin hole 302 and the first pin hole 202 inside the sliding block 301. After the position of the sliding block 301 is adjusted, the double-ended lead screw 307 is manually rotated while the rotating rod 305 is held. Then, during the rotation of the double-ended lead screw 307, the sliding block 301 is driven to rotate on the outer wall of the sliding block 301, and the rotating rod 305 will also rotate. This causes the rotating rod 305 to drive the straightening wheel 306 to fit against the outer wall of the cable, which facilitates the subsequent straightening of the cable. Then, the pin is inserted between the sliding block 301 and the first pin hole 202 to fix the sliding block 301.

[0033] The cable is then pulled and moved between multiple straightening wheels 306, allowing the straightening wheels 306 to straighten the cable in different directions.

[0034] Furthermore, the support structure 1 includes a support frame 101, a vertical rod 102 is provided at the top of the support frame 101, a guide ring 103 is provided at the top of the vertical rod 102, and the number of guide rings 103 is set to multiple. A screw body 106 is rotatably connected inside the vertical rod 102. A guide groove 104 is opened inside the guide ring 103, and a connecting groove 105 is opened at the bottom of the guide groove 104. When it is necessary to straighten the cable, the cable is passed through the guide structure 2 inside the guide ring 103, and then the screw body 106 is manually rotated. Then the connecting groove 105 drives the guide structure 2 to rotate, so that the guide structure 2 drives the inner cable straightening structure 3 to rotate.

[0035] Furthermore, the guide structure 2 includes a rotating ring 201, the outer wall of which is provided with a turbine ring. The turbine ring cooperates with the screw body 106. The rotating ring 201 has first pin holes 202 on both sides inside. The rotating ring 201 is slidably connected to the inner wall of the guide groove 104. The connecting groove 105 rotates and drives the rotating ring 201 to rotate inside the guide groove 104 through the turbine ring on the outer wall of the rotating ring 201, so that the rotating ring 201 drives the cable straightening structure 3 provided on the inner side to adjust its position.

[0036] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An automatic straightening device for a power cable production line, characterized in that: include The support structure (1) has a guide structure (2) inside, and cable straightening structures (3) are provided on both sides of the inner wall of the guide structure (2). The cable straightening structure (3) includes a sliding block (301). The number of the sliding blocks (301) is set to four. Two sliding blocks (301) form a group. The two groups of sliding blocks (301) are symmetrically distributed on both sides of the inner wall of the guide structure (2). A second pin hole (302) is opened on one side of the sliding block (301). A connecting block (303) is provided on the other side of the sliding block (301). A rotating shaft (304) is rotatably connected inside the connecting block (303). A mating hole is opened inside the rotating shaft (304). A double-ended screw (307) is provided between the mating holes of the two rotating shafts (304). The double-ended screw (307) and the mating hole are mated to each other.

2. The automatic straightening device for a power cable production line according to claim 1, characterized in that: The support structure (1) includes a support frame (101), a vertical rod (102) is provided on the top of the support frame (101), a guide ring (103) is provided on the top of the vertical rod (102), and the number of guide rings (103) is set to multiple. A screw body (106) is rotatably connected inside the vertical rod (102).

3. The automatic straightening device for a power cable production line according to claim 2, characterized in that: The guide ring (103) has a guide groove (104) inside, and a connecting groove (105) is provided at the bottom of the guide groove (104).

4. The automatic straightening device for a power cable production line according to claim 1, characterized in that: The guide structure (2) includes a rotating ring (201), the outer wall of which is provided with a turbine ring, the turbine ring and the screw body (106) cooperate with each other, and the two sides inside the rotating ring (201) are provided with first pin holes (202), and the rotating ring (201) is slidably connected to the inner wall of the guide groove (104).

5. The automatic straightening device for a power cable production line according to claim 1, characterized in that: The sliding block (301) is slidably connected to the inner wall of the rotating ring (201), and the inner side of the connecting block (303) is rotatably connected to a rotating rod (305). A straightening wheel (306) is rotatably connected between the two rotating rods (305).

6. The automatic straightening device for a power cable production line according to claim 1, characterized in that: The longitudinal section of the sliding block (301) is U-shaped, and a pin is provided between the second pin hole (302) and the first pin hole (202) inside the sliding block (301).

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