A cable and a roll production line for producing the cable

Abstract

The application relates to the technical field of cable production, in particular to a cable and a rolling production line for producing the cable; the rolling production line comprises a traction device and a rolling device; the rolling device comprises a base and a main rotating frame fixedly connected to the upper surface of the base; a main pressing sleeve is rotationally connected to the inner side of the main rotating frame; the main pressing sleeve is engaged with a gear through an outer gear ring; the gear is driven by a motor; a secondary rotating frame is fixedly connected to the upper surface of the base; a secondary pressing sleeve is rotationally connected to the inner side of the secondary rotating frame; the number of the secondary pressing sleeves is plural; the plural secondary pressing sleeves are coaxial with the main pressing sleeve and sequentially away from the main pressing sleeve; the number of the secondary pressing sleeves connected with the main pressing sleeve is controlled, so that the rolling range of the cable is matched with the rolling demand of the cable, and on one hand, the rolling effect is met, and on the other hand, the load of the motor is reduced, and the energy loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically to a cable and a roll forming production line for producing the cable. Background Technology

[0002] Cable roll forming is a crucial step in cable manufacturing, primarily occurring during the forming and processing stages. It refers to the roll forming operation performed on the cable production line to ensure a tight fit between the cable core and insulation layer, reducing air gaps and protrusions, and enhancing the cable's structural stability and reliability. It typically occurs after insulation extrusion and before cabling. The cable production process can be summarized as conductor drawing, conductor annealing, conductor stranding, insulation extrusion, cable roll forming, cabling, filling and binding, sheathing, and testing.

[0003] Cable roll forming is a process where cables are roll-formed using a roll forming device to achieve a standard circular cross-section and ensure structural tightness. The roll forming device typically uses a motor-driven roll forming sleeve to rotate the inner pressure rollers against the outer wall of the cable. The rollers roll around the cable, thus applying pressure. The axial length of the roll forming sleeve determines the roll forming range, but currently, the axial length of the roll forming sleeve is constant. Different types of cables require different roll forming ranges. For cables with a smaller roll forming requirement, a larger roll forming range can create unnecessary load and waste energy. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a cable and a roll forming production line for producing the cable. By controlling the number of auxiliary pressure sleeves connected to the main pressure sleeve, this invention makes the roll forming range of the cable match the roll forming requirements of the cable, thereby satisfying the roll forming effect while reducing the load on the motor and reducing energy consumption.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A cable rolling production line according to this invention includes a traction device and a rolling device; the rolling device includes a base and a main rotating frame fixedly connected to the upper surface of the base; a main pressure sleeve is rotatably connected to the inner side of the main rotating frame; the main pressure sleeve meshes with a gear through an external gear ring; the gear is driven by a motor; a secondary rotating frame is fixedly connected to the upper surface of the base; a secondary pressure sleeve is rotatably connected to the inner side of the secondary rotating frame; there are multiple secondary pressure sleeves; the multiple secondary pressure sleeves are coaxial with the main pressure sleeve and sequentially move away from the main pressure sleeve; adjacent secondary pressure sleeves have an axial gap; the main pressure sleeve and the secondary pressure sleeve have an axial gap; electric push rods are uniformly embedded in the inner walls of the main pressure sleeve and the secondary pressure sleeves; a pressure seat with a pressure roller is fixedly connected to the end of the electric push rod; a main slot is provided on the side of the main pressure sleeve facing the secondary pressure sleeve; a secondary slot is provided on the side of the secondary pressure sleeve away from the main pressure sleeve; a locking block is movably connected to the side of the secondary pressure sleeve facing the main pressure sleeve; the locking block can be locked into the main slot or the secondary slot.

[0006] Preferably, the cross-section of the main slot is the same as that of the secondary slot; the secondary pressure sleeve has a movable groove on the side facing the main pressure sleeve; the locking block is slidably connected in the movable groove; the movable groove is connected to the outer wall of the secondary pressure sleeve by a connecting groove; a lever is movably connected in the connecting groove; the lever is connected to the locking block.

[0007] Preferably, the main pressure sleeve is fixedly connected to the main counterweight block on its outer wall; the secondary pressure sleeve is fixedly connected to the secondary counterweight block on its outer wall; the main slot on the main pressure sleeve corresponds to the movable slot on the secondary pressure sleeve under the action of the main counterweight block and the secondary counterweight block.

[0008] Preferably, the movable groove on the secondary pressure sleeve and the secondary retaining groove are connected to form a complete groove; one end of the retaining block on the secondary pressure sleeve extends to the movable groove and the other end extends to the secondary retaining groove; a reset groove is provided on the outer wall of the retaining block; a reset block is slidably connected in the reset groove; the side of the reset block away from the main pressure sleeve is connected to the groove wall of the reset groove by a spring; the reset block is fixedly connected to the inner wall of the complete groove.

[0009] Preferably, the locking block is an arc-shaped plate; the outer wall of the locking block is provided with an arc-shaped groove along the circumference of the secondary pressure sleeve; the lever is slidably connected in the arc-shaped groove; the end of the connecting groove near the main pressure sleeve is provided with a first locking groove along the circumference of the secondary pressure sleeve; the lever can enter the first locking groove along the arc-shaped groove.

[0010] Preferably, a second locking groove is provided on the groove wall of the first locking groove away from the main pressure sleeve; the toggle block can return to the second locking groove under the spring force.

[0011] Preferably, the main pressure sleeve has multiple main slots; the multiple main slots are evenly distributed around the central axis of the main pressure sleeve; the number of movable slots and secondary slots on the secondary pressure sleeve is the same as the number of main slots; the multiple movable slots and secondary slots are evenly distributed around the central axis of the secondary pressure sleeve; the number of toggle blocks is the same as the number of movable slots; a toggle ring is fitted and movably connected to the outer wall of the secondary pressure sleeve; the inner wall of the toggle ring is provided with an annular receiving groove; the ends of the toggle blocks on the outer wall of the secondary pressure sleeve are located in the same receiving groove.

[0012] Preferably, the inner walls of the receiving groove are rotatably connected to rotating rings; the lever is movably connected between the two rotating rings.

[0013] Preferably, the circumferential openings of the main slot and the secondary slot are fixedly connected to a stop block; the card block on the secondary pressure sleeve can be moved by the stop block after it extends out.

[0014] A cable using the aforementioned cable rolling production line, the cable comprising a conductor, an insulation layer, a filler layer, and a protective layer; the conductor is drawn, annealed, and stranded before being covered with an insulation layer, and the conductor covered with the insulation layer is drawn into a rolling device for rolling by a traction device.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention controls the number of auxiliary pressure sleeves connected to the main pressure sleeve, thereby matching the cable's rolling range with the cable's rolling requirements. This satisfies the rolling effect while reducing the motor load and energy consumption.

[0017] 2. This invention enables the main pressure sleeve to be quickly connected to the corresponding number of secondary pressure sleeves by moving the lever block furthest from the main pressure sleeve within the secondary pressure sleeve to be activated. This greatly improves the ease of use of the roller pressing device compared to the original sequential connection method.

[0018] 3. The present invention uses a toggle ring to movably connect with a locking block on the secondary pressure sleeve, thereby enabling the locking block to move during the rotation of both the main and secondary pressure sleeves, and thus enabling the corresponding secondary pressure sleeve to be activated or deactivated, meeting the adjustment requirements during the cable rolling process. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of the roller pressing device in this invention;

[0021] Figure 2 This is a perspective view of the removal of the actuating ring in the roller pressing device of the present invention;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 yes Figure 2 A stereoscopic view from another perspective;

[0024] Figure 5 This is a cross-sectional view of the roller pressing device in this invention;

[0025] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 This is a perspective view of the main pressure sleeve in this invention;

[0027] Figure 8 This is a perspective view of the auxiliary pressure sleeve in this invention;

[0028] Figure 9 yes Figure 8 A stereoscopic view from another perspective;

[0029] Figure 10 This is a three-dimensional view of the card block in this invention.

[0030] In the diagram: Base 1, Main rotating frame 11, Sub-rotating frame 12, Main pressure sleeve 2, External gear ring 21, Gear 22, Motor 23, Main slot 24, Main counterweight block 25, Sub-pressure sleeve 3, Second locking slot 30, Electric push rod 31, Pressure roller 32, Pressure seat 33, Sub-slot 34, Movable slot 35, Connecting slot 36, Sub-counterweight block 37, Whole slot 38, First locking slot 39, Locking block 4, Reset slot 41, Reset block 42, Spring 43, Arc-shaped slot 44, Toggle block 5, Toggle ring 6, Receiving slot 61, Rotating ring 7, Stop block 8. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 10 As shown, the present invention includes the following embodiments:

[0033] Example 1: A cable rolling production line includes a traction device and a rolling device; the rolling device includes a base 1 and a main rotating frame 11 fixedly connected to the upper surface of the base 1; a main pressure sleeve 2 is rotatably connected to the inner side of the main rotating frame 11; the main pressure sleeve 2 meshes with a gear 22 through an external gear ring 21; the gear 22 is driven by a motor 23; a secondary rotating frame 12 is fixedly connected to the upper surface of the base 1; a secondary pressure sleeve 3 is rotatably connected to the inner side of the secondary rotating frame 12; there are multiple secondary pressure sleeves 3; the multiple secondary pressure sleeves 3 are coaxial with the main pressure sleeve 2 and sequentially move away from the main pressure sleeve 2. Pressure sleeve 2; adjacent auxiliary pressure sleeves 3 have an axial gap; the main pressure sleeve 2 and auxiliary pressure sleeve 3 have an axial gap; electric push rods 31 are uniformly embedded in the inner walls of the main pressure sleeve 2 and auxiliary pressure sleeve 3; the end of the electric push rod 31 is fixedly connected to a pressure seat 33 with a pressure roller 32; the main pressure sleeve 2 is provided with a main slot 24 on the side facing the auxiliary pressure sleeve 3; the auxiliary pressure sleeve 3 is provided with a secondary slot 34 on the side away from the main pressure sleeve 2; a locking block 4 is movably connected to the side of the auxiliary pressure sleeve 3 facing the main pressure sleeve 2; the locking block 4 can be locked into the main slot 24 or the secondary slot 34.

[0034] In this embodiment, the cross-section of the main slot 24 is the same as that of the secondary slot 34; the secondary pressure sleeve 3 is provided with a movable slot 35 on the side facing the main pressure sleeve 2; the locking block 4 is slidably connected in the movable slot 35; the movable slot 35 is connected to the outer wall of the secondary pressure sleeve 3 by a connecting slot 36; a lever 5 is movably connected in the connecting slot 36; the lever 5 is connected to the locking block 4.

[0035] After the copper conductor is drawn and annealed, multiple conductors are twisted together and then extruded to form an insulation layer. The cable is then pulled through the inner sides of the main pressure sleeve 2 and the secondary pressure sleeve 3 using a traction device. The operator determines the number of secondary pressure sleeves 3 to be activated based on the cable type and the required degree of rolling. After confirming the number of secondary pressure sleeves 3 to be activated, the corresponding lever 5 is activated. For ease of description, the multiple secondary pressure sleeves 3, located away from the main pressure sleeve 2, are sequentially referred to as the first secondary pressure sleeve 3, the second secondary pressure sleeve 3, the third secondary pressure sleeve 3, etc. The operator rotates the first secondary pressure sleeve 3 so that the movable groove 35 on the first secondary pressure sleeve 3 engages with the main locking groove 24 on the main pressure sleeve 2. Align the parts, then move the lever 5 on the first secondary pressure sleeve 3. After being moved, the lever 5 moves along the corresponding connecting groove 36 and pulls the connected locking block 4. After moving, the locking block 4 in the first secondary pressure sleeve 3 slides out along the movable groove 35 and inserts into the main locking slot 24, thus connecting the first secondary pressure sleeve 3 with the main pressure sleeve 2. Next, the operator rotates the second secondary pressure sleeve 3 so that the movable groove 35 on the second secondary pressure sleeve 3 aligns with the secondary locking slot 34 on the first secondary pressure sleeve 3. Move the lever 5 on the second secondary pressure sleeve 3. After being moved, the lever 5 moves along the corresponding connecting groove 36 and pulls the connected locking block 4. After moving, the locking block 4 in the second secondary pressure sleeve 3 slides out along the movable groove 35 and inserts into the main locking slot 24. The second secondary pressure sleeve 3 is connected to the first secondary pressure sleeve 3 by inserting it into the secondary slot 34 on the first secondary pressure sleeve 3. This process is repeated to connect the remaining secondary pressure sleeves 3 until the corresponding number of secondary pressure sleeves 3 are connected. The more secondary pressure sleeves 3 are activated, the larger the area of ​​the cable being rolled, and the higher the degree of rolling at the same position on the cable. After the secondary pressure sleeves 3 are connected, the control component will control the electric push rod 31 to extend and drive the connected U-shaped pressure seat 33 to approach the cable. The pressure seat 33 will drive the pressure roller 32 to contact the outer wall of the cable. Finally, the motor 23 is started to drive the gear 22 to rotate. The rotating gear 22 will drive the external gear ring 21 on the outer wall of the main pressure sleeve 2 to rotate. The main pressure sleeve 2 rotates within the main rotating frame 11. During the rotation of the main pressure sleeve 2, the inner pressure roller 32 moves around the cable. The rotation of the main pressure sleeve 2 also drives the connected multiple auxiliary pressure sleeves 3 to rotate. During the rotation of the auxiliary pressure sleeves 3, the inner pressure roller 32 moves around the cable. The pressure roller 32 moves around the outer wall of the cable to achieve rolling pressure, making the cable more compact under the pressure of the pressure roller 32. The more auxiliary pressure sleeves 3 are used, the greater the load on the motor 23. While ensuring the cable rolling effect, the number of auxiliary pressure sleeves 3 should be minimized. After the cable has been rolled, the traction device will take the rolled cable through cabling, filling and binding, and finally sheathing and testing.

[0036] This invention controls the number of auxiliary pressure sleeves 3 connected to the main pressure sleeve 2, thereby matching the cable's rolling range with the cable's rolling requirements. This satisfies the rolling effect while reducing the load on the motor 23 and lowering energy consumption.

[0037] Example 2: The outer wall of the main pressure sleeve 2 is fixedly connected to the main counterweight 25; the outer wall of the secondary pressure sleeve 3 is fixedly connected to the secondary counterweight 37; the main slot 24 on the main pressure sleeve 2 corresponds to the movable slot 35 on the secondary pressure sleeve 3 under the action of the main counterweight 25 and the secondary counterweight 37.

[0038] When the roller pressing device is stopped, the main counterweight 25, under its own weight, will drive the main pressure sleeve 2 to rotate within the main rotating frame 11. The main counterweight 25 will move to a lower position on the outer wall of the main pressure sleeve 2 under its own weight, and will be positioned close to the base 1, thus stabilizing the main pressure sleeve 2 within the main rotating frame 11 and maintaining the stable position of the main slot 24 on the main pressure sleeve 2. Similarly, the auxiliary counterweight 37, under its own weight, will drive the auxiliary pressure sleeve 3 to rotate within the auxiliary rotating frame 12. The auxiliary counterweight 37 will move to a lower position on the auxiliary pressure sleeve 3 under its own weight. The secondary counterweight 37 is positioned near the base 1 on the lower part of the outer wall, so that the secondary pressure sleeve 3 remains stable within the secondary rotating frame 12. Under the counterweight of the main counterweight 25 and the secondary counterweight 37, the main slot 24 on the main pressure sleeve 2 is aligned with the movable slot 35 on the secondary pressure sleeve 3. This allows the locking block 4 on the first secondary pressure sleeve 3 to directly engage with the main slot 24 after movement. The secondary slots 34 on adjacent secondary pressure sleeves 3 are aligned with the corresponding movable slots 35, so that the secondary slots 34 on adjacent secondary pressure sleeves 3 and the corresponding movable slots 35 are connected by the corresponding locking blocks 4.

[0039] Example 3: The movable groove 35 on the secondary pressure sleeve 3 communicates with the secondary locking groove 34 to form a complete groove 38; one end of the locking block 4 on the secondary pressure sleeve 3 extends to the movable groove 35, and the other end extends to the secondary locking groove 34; a reset groove 41 is provided on the outer wall of the locking block 4; a reset block 42 is slidably connected in the reset groove 41; the side of the reset block 42 facing away from the main pressure sleeve 2 is connected to the groove wall of the reset groove 41 by a spring 43; the reset block 42 is fixedly connected to the inner wall of the complete groove 38.

[0040] In this embodiment, the locking block 4 is an arc-shaped plate; the outer wall of the locking block 4 is provided with an arc-shaped groove 44 along the circumference of the secondary pressure sleeve 3; the lever 5 is slidably connected in the arc-shaped groove 44; the end of the connecting groove 36 near the main pressure sleeve 2 is provided with a first locking groove 39 along the circumference of the secondary pressure sleeve 3; the lever 5 can enter the first locking groove 39 along the arc-shaped groove 44.

[0041] In this embodiment, the first locking groove 39 is provided with a second locking groove 30 on the groove wall away from the main pressure sleeve 2; the toggle block 5 can return to the second locking groove 30 under the elastic force of the spring 43.

[0042] There are multiple auxiliary pressure sleeves 3. When a certain number of auxiliary pressure sleeves 3 need to be activated, such as three, the operator will push the lever 5 on the third auxiliary pressure sleeve 3 closer to the main pressure sleeve 2. The movable slots 35 on multiple auxiliary pressure sleeves 3 are aligned. The movable slot 35 on the first auxiliary pressure sleeve 3 is aligned with the main locking slot 24 on the main pressure sleeve. Thus, when the lever 5 on the third auxiliary pressure sleeve 3 is moved, the lever 5 on the third auxiliary pressure sleeve 3 drives the locking block 4 to move along the corresponding slot 38 and move out. As the locking block 4 on the third auxiliary pressure sleeve 3 moves closer to the main pressure sleeve 2, it will enter the secondary locking slot 34 on the second auxiliary pressure sleeve 3. The secondary locking slot 34 on the second auxiliary pressure sleeve 3 enters the... After the locking blocks 4 on the three secondary pressure sleeves 3 are engaged, the locking block 4 on the second secondary pressure sleeve 3 will move along the corresponding groove 38 and move out. As the locking block 4 on the second secondary pressure sleeve 3 moves towards the main pressure sleeve 2, it will enter the secondary locking groove 34 on the first secondary pressure sleeve 3. After the secondary locking groove 34 on the first secondary pressure sleeve 3 enters the locking block 4 on the second secondary pressure sleeve 3, the locking block 4 on the first secondary pressure sleeve 3 will move along the corresponding groove 38 and move out to insert into the main locking groove 24. This achieves the connection between the main pressure groove and the three secondary pressure sleeves 3. During the movement of the locking block 4 along the groove 38, the reset groove 41 and the reset block 42 will slide, and the spring 43 will be compressed to complete the power storage process. Then the worker... The operator moves the lever 5 on the third auxiliary pressure sleeve 3 along the arc groove 44. After moving circumferentially, the lever 5 on the third auxiliary pressure sleeve 3 enters the first locking groove 39. Then, the lever 5 on the third auxiliary pressure sleeve 3 is released, and the spring 43 transmits the elastic force to the locking block 4, causing multiple locking blocks 4 to return to their respective slots 38. The locking block 4 in the third auxiliary pressure sleeve 3 will drive the lever 5 in the second locking groove 30 away from the main pressure sleeve 2 and into the second locking groove 30, achieving further locking of the lever 5. Note that the locking block 4 on the third auxiliary pressure sleeve 3 does not disengage from the secondary locking groove 34 on the second auxiliary pressure sleeve 3. When it is necessary to disconnect the three auxiliary pressure sleeves 3 from the main pressure sleeve 2, wait for the main pressure sleeve 2 to... After the secondary pressure sleeve 3 stops, the lever 5 on the third secondary pressure sleeve 3 is moved closer to the main pressure sleeve 2, so that the lever 5 moves from the second locking groove 30 to the first locking groove 39. Then, the lever 5 is controlled to move upward around the third secondary pressure sleeve 3, so that the lever 5 moves from the first locking groove 39 to the connecting groove 36. Finally, the lever 5 on the third secondary pressure sleeve 3 is released, and the spring 43 will drive the locking block 4 in the third secondary pressure sleeve 3 away from the main pressure sleeve 2. The locking block 4 will drive the lever 5 to move in the connecting groove 36. The locking block 4 on the third secondary pressure sleeve 3 moves out of the secondary locking groove 34 on the second secondary pressure sleeve 3. Similarly, the other locking blocks 4 are reset under the push of their respective springs 43, and the connection between the main pressure sleeve 2 and the secondary pressure sleeve 3 is released.

[0043] In this embodiment, by moving the lever 5 furthest from the main pressure sleeve 2 within the secondary pressure sleeve 3 that needs to be activated, the lever 5 can drive the locking blocks 4 within all the activated secondary pressure sleeves 3 to move, thereby quickly connecting the main pressure sleeve 2 with the corresponding number of secondary pressure sleeves 3. Compared with the original sequential connection method, this greatly improves the convenience of using the roller pressing device.

[0044] Example 4: The main pressure sleeve 2 has multiple main slots 24; the multiple main slots 24 are evenly distributed around the central axis of the main pressure sleeve 2; the number of movable slots 35 and secondary slots 34 on the secondary pressure sleeve 3 is the same as the number of main slots 24; the multiple movable slots 35 and secondary slots 34 are evenly distributed around the central axis of the secondary pressure sleeve 3; the number of toggle blocks 5 is the same as the number of movable slots 35; the outer wall of the secondary pressure sleeve 3 is fitted with and movably connected to a toggle ring 6; the inner wall of the toggle ring 6 is provided with an annular receiving groove 61; the ends of the toggle blocks 5 on the outer wall of the secondary pressure sleeve 3 are located in the same receiving groove 61.

[0045] In this embodiment, the inner walls of the two phases of the receiving groove 61 are rotatably connected to the rotating ring 7; the toggle block 5 is movably connected between the two rotating rings 7.

[0046] In this embodiment, the circumferential slots of the main slot 24 and the secondary slot 34 are fixedly connected to the stop block 8; the card block 4 on the secondary pressure sleeve 3 can be moved by the stop block 8 after it extends out.

[0047] During the production of the same cable, the rolling requirements may change due to process and environmental factors. Therefore, the rolling range needs to be temporarily adjusted to meet the rolling requirements of the cable. The rotation of the main pressure sleeve 2 cannot be stopped during cable production, so the number of activated secondary pressure sleeves 3 needs to be adjusted. Specifically, the operator pushes the actuating ring 6 sequentially. For example, when pushing the actuating ring 6 on the outer wall of the first secondary pressure sleeve 3, the actuating ring 6 will cause multiple actuating blocks 5 in the receiving groove 61 to move closer to the main pressure sleeve 2. The actuating blocks 5 will cause the locking blocks 4 to move out of the movable groove 35 on the first secondary pressure sleeve 3 and abut against the side of the main pressure sleeve 2 facing the secondary pressure sleeve 3. The rotation of the main pressure sleeve 2 will cause the stop block 8 to contact one of the locking blocks 4, thereby causing the locking block 4 to move. As the first secondary pressure sleeve 3 rotates with the main pressure sleeve 2, the movable groove 35 on the first secondary pressure sleeve 3 aligns with the main locking groove 24 on the main pressure sleeve 2. The operator will continue to push the actuating ring 6 on the outer wall of the first secondary pressure sleeve 3 further closer to the main pressure sleeve 2. The moving ring 6 will cause the locking block 4 to engage with the main locking groove 24. Since the lever 5 is movably connected to the inside of the moving ring 6, the moving ring 6 will not rotate even when the first auxiliary pressure sleeve 3 rotates with the main pressure sleeve 2. The inner receiving groove 61 of the moving ring 6 is movably connected to the lever 5 through the rotating ring 7, thus reducing the friction between the lever 5 and the moving ring 6. This allows the locking block 4 to move under the control of the moving ring 6. After completing the connection of the first auxiliary pressure sleeve 3 during the rotation of the main pressure sleeve 2, the same operating steps are used to move the second auxiliary pressure sleeve. The locking block 4 on sleeve 3 engages with the sub-slot 34 on the first sub-slot 3 until the corresponding sub-slot 3 is connected and activated without the main slot 2 stopping rotation. If it is necessary to disconnect the corresponding sub-slot 3, simply move the actuating ring 6 away from the main slot 2. In this embodiment, each sub-slot 3 is provided with multiple movable slots 35, so that multiple locking blocks 4 can engage with the corresponding main slot 24 or sub-slot 34, thereby improving the connection strength between the main slot 2 and the sub-slot 3, and between adjacent sub-slot 3.

[0048] In this embodiment, the toggle ring 6 is movably connected to the locking block 4 on the secondary pressure sleeve 3, so that the locking block 4 can be controlled to move during the rotation of the main pressure sleeve 2 and the secondary pressure sleeve 3, thereby enabling or disabling the corresponding secondary pressure sleeve 3 to meet the adjustment requirements during the cable rolling process.

[0049] Example 5: A cable using the above-mentioned cable rolling production line, the cable including a conductor, an insulation layer, a filler layer and a protective layer; the conductor is drawn, annealed and stranded and then covered with an insulation layer, the conductor covered with the insulation layer is drawn into the rolling device for rolling by a traction device.

[0050] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to 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 limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable rolling production line, comprising a traction device and a rolling device; the rolling device includes a base and a main rotating frame fixedly connected to the upper surface of the base; The main rotating frame is rotatably connected to the main pressure sleeve; the main pressure sleeve meshes with a gear through an external gear ring; the gear is driven by a motor; characterized in that: The secondary rotating frame is fixedly connected to the upper surface of the base; The inner side of the secondary rotating frame is rotatably connected to a secondary pressure sleeve; there are multiple secondary pressure sleeves; the multiple secondary pressure sleeves are coaxial with the main pressure sleeve and sequentially move away from the main pressure sleeve; adjacent secondary pressure sleeves have an axial gap; the main pressure sleeve and the secondary pressure sleeve have an axial gap; electric push rods are uniformly embedded in the inner walls of the main pressure sleeve and the secondary pressure sleeves; the ends of the electric push rods are fixedly connected to a pressure seat with pressure rollers; the main pressure sleeve has a main slot facing the secondary pressure sleeve; the secondary pressure sleeve has a secondary slot facing away from the main pressure sleeve; a locking block is movably connected to the secondary pressure sleeve facing the main pressure sleeve; the locking block can be locked into the main slot or the secondary slot.

2. The cable rolling production line according to claim 1, characterized in that: The main slot has the same cross-section as the secondary slot; the secondary pressure sleeve has a movable groove on the side facing the main pressure sleeve; the locking block is slidably connected in the movable groove; the movable groove is connected to the outer wall of the secondary pressure sleeve by a connecting groove; a lever is movably connected in the connecting groove; the lever is connected to the locking block.

3. The cable rolling production line according to claim 2, characterized in that: The main pressure sleeve is fixedly connected to the main counterweight block on its outer wall; the secondary pressure sleeve is fixedly connected to the secondary counterweight block on its outer wall; the main slot on the main pressure sleeve corresponds to the movable slot on the secondary pressure sleeve under the action of the main counterweight block and the secondary counterweight block.

4. The cable rolling production line according to claim 3, characterized in that: The movable groove on the secondary pressure sleeve is connected to the secondary locking groove to form a complete groove; one end of the locking block on the secondary pressure sleeve extends to the movable groove, and the other end extends to the secondary locking groove; a reset groove is provided on the outer wall of the locking block; a reset block is slidably connected in the reset groove; the side of the reset block away from the main pressure sleeve is connected to the groove wall of the reset groove by a spring; the reset block is fixedly connected to the inner wall of the complete groove.

5. A cable rolling production line according to claim 4, characterized in that: The locking block is an arc-shaped plate; the outer wall of the locking block is provided with an arc-shaped groove along the circumference of the secondary pressure sleeve; the lever is slidably connected in the arc-shaped groove; the end of the connecting groove near the main pressure sleeve is provided with a first locking groove along the circumference of the secondary pressure sleeve; the lever can enter the first locking groove along the arc-shaped groove.

6. A cable rolling production line according to claim 5, characterized in that: The first locking groove has a second locking groove on the groove wall away from the main pressure sleeve; the toggle block can return to the second locking groove under the spring force.

7. A cable rolling production line according to claim 2, characterized in that: The main pressure sleeve has multiple main slots; these main slots are evenly distributed around the central axis of the main pressure sleeve; the secondary pressure sleeve has the same number of movable slots and secondary slots as the main slots; these movable slots and secondary slots are evenly distributed around the central axis of the secondary pressure sleeve; the number of toggle blocks is the same as the number of movable slots; a toggle ring is fitted and movably connected to the outer wall of the secondary pressure sleeve; the inner wall of the toggle ring has an annular receiving groove; the ends of the toggle blocks on the outer wall of the secondary pressure sleeve are located in the same receiving groove.

8. A cable rolling production line according to claim 7, characterized in that: The inner walls of the two phases of the receiving groove are rotatably connected to a rotating ring; the lever is movably connected between the two rotating rings.

9. A cable rolling production line according to claim 7, characterized in that: The main slot and the secondary slot are fixedly connected to the stop block in their circumferential grooves; the block on the secondary pressure sleeve can be moved by the stop block after it extends out.

10. A cable, wherein the cable is produced using the cable rolling production line according to any one of claims 1-9, characterized in that: The cable includes a conductor, an insulation layer, a filler layer, and a protective layer; the conductor is drawn, annealed, and stranded, and then covered with an insulation layer. The conductor covered with the insulation layer is drawn into a rolling device by a traction device and rolled.

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