An online cutting device

Abstract

This utility model relates to the field of cable manufacturing technology and provides an online cutting device for cutting the insulation and sheath layers of cables. The cutting device includes: a support frame erected on the cable transmission path; at least two limiting blocks located on opposite sides of the support frame to limit the lateral displacement of the cable; and a cutting assembly mounted on the support frame and having a cutting element located between the opposite limiting blocks for cutting the insulation and sheath layers during cable transmission; the cutting element includes a cutting edge with an adjustable height relative to the support frame. Compared with traditional manual cutting methods, the cutting device in this solution significantly improves work efficiency and cutting consistency, avoids conductor damage caused by improper operation, and enhances the safety, repeatability, and standardization of cable repair operations.

Description

Technical Field

[0001] This utility model belongs to the field of cable production technology, specifically relating to an online cutting device. Background Technology

[0002] In cable extrusion production, the stability of the extrusion process directly affects the quality of the final product. However, in actual continuous production, process factors such as fluctuations in raw material properties, temperature control deviations, die wear, mismatched traction speeds, or abnormal cooling systems often lead to defects in the extruded insulation or sheath layers, including uneven thickness, eccentricity, bubbles, scorched material, surface depressions, or adhesion. For these partially or periodically non-conforming cable products, the industry generally adopts an "online repair" strategy. This involves promptly peeling the defective insulation and sheath layers from the conductor without stopping or with only a short stop, retaining the intact metal conductor or inner layer structure as a semi-finished product, and then re-feeding it to the extrusion unit for secondary extrusion, thus achieving material recycling and maintaining production continuity.

[0003] Current technologies generally employ manual methods for this process. Specifically, the operator stands at the extruder head outlet or the front of the take-up machine, holding a specialized cutting tool. While the cable is being continuously transported, the operator manually cuts the defective section, simultaneously peeling the cut insulation or sheath layer from the conductor. This entire process requires the operator to maintain high concentration and precisely control the cutting depth to avoid damaging the internal conductor or shielding layer.

[0004] This traditional operating method has many prominent problems:

[0005] Low processing accuracy and poor consistency: Manual operation is greatly affected by individual experience, physical condition, and emotional fluctuations. Unavoidable slight hand tremors or inaccurate force control can easily cause the tool to cut too deeply, scratching the copper / aluminum conductor or inner shielding layer, resulting in localized reduction in cross-section, increased resistance, or electric field concentration, which seriously affects the electrical performance and long-term operational reliability of the cable after repair.

[0006] High labor intensity and easy fatigue: Maintaining a fixed posture for long periods of time while holding a knife for delicate operations puts significant strain on the wrists, arms, shoulders, and neck. Muscle soreness usually occurs after a few minutes of work, requiring frequent shifts or interruptions, resulting in low work efficiency and difficulty in keeping up with the production pace of modern high-speed extrusion lines.

[0007] Poor production continuity: Due to the slow and unstable speed of manual processing, it is often necessary to reduce the speed of the production line or even temporarily stop the machine to cooperate, which disrupts the continuity and rhythm consistency of production, affects the overall efficiency of the equipment, and increases the unit energy consumption and labor costs. Utility Model Content

[0008] To address the aforementioned shortcomings of existing technologies, the technical problem this invention aims to solve is to provide an online cutting device. This device uses relatively arranged limiting blocks on a support frame to laterally position the cable, and combines these with replaceable modular cutting components to achieve automatic cutting of the cable insulation and sheath layers. Compared to traditional manual cutting methods, this significantly improves work efficiency and cutting consistency, avoids conductor damage caused by improper operation, and enhances the safety, repeatability, and standardization of cable repair operations.

[0009] The technical solution adopted by this utility model to solve its technical problem is to propose an online cutting device for cutting the insulation layer and sheath layer on a cable, the cutting device comprising:

[0010] A support frame is erected along the cable transmission path;

[0011] The support frame is provided with at least two limiting blocks located on opposite sides. The two limiting blocks respectively move against the two radial sides of the cable to limit the lateral displacement of the cable.

[0012] A cutting assembly, which is disposed on the support frame and has a cutting element, the cutting element being located between the opposing limiting blocks, one end being detachably disposed on the support frame, and the other end extending toward the cable transmission path and pointing toward the outer surface of the cable, for cutting its insulation layer and sheath layer during the transmission of the cable;

[0013] The cutting element includes a height-adjustable cutting edge relative to the support frame. When the outer diameter of the cable and the thickness of its insulation and sheath layers change, the distance between the cutting edge and the cable can be changed by replacing the cutting element with one having a different cutting edge height.

[0014] In the above-mentioned online cutting device, the cutting assembly further includes a fixing base, which is connected to the support frame, and the cutting element is connected to the fixing base.

[0015] In the above-mentioned online cutting device, the fixed base is provided with a first mounting groove, and one end of the cutting component is inserted into the first mounting groove.

[0016] In the above-mentioned online cutting device, a first threaded hole is provided on the side wall of the fixed base. The first threaded hole communicates with the first mounting groove. One end of the first bolt passes through the first threaded hole and abuts against the cutting part, so as to fix the cutting part on the fixed base.

[0017] In the above-mentioned online cutting device, the support frame is provided with a second mounting groove, the fixing seat is embedded in the second mounting groove, and the two sides of the fixing seat are respectively abutted against the inner wall of the second mounting groove.

[0018] In the above-mentioned online cutting device, the support frame is provided with a second threaded hole, which communicates with the second mounting groove. One end of the second bolt passes through the second mounting groove and abuts against the fixing seat, so as to fix the fixing seat in the second mounting groove.

[0019] In the above-mentioned online cutting device, the support frame is provided with two slide rails on opposite sides, and each slide rail is connected to a limiting block.

[0020] In the above-mentioned online cutting device, the slide rail is provided with a waist-shaped hole, the limiting block is provided with a through hole, and one end of the third bolt passes through the through hole and is connected in the waist-shaped hole.

[0021] In the above-mentioned online cutting device, the support frame includes a first support plate and a second support plate, and the limiting block and the cutting component are both disposed on the first support plate.

[0022] In the above-mentioned online cutting device, the first support plate and the second support plate are connected by a fourth bolt.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) By setting relatively arranged limiting blocks on the support frame, the cable is positioned laterally. Combined with replaceable modular cutting parts, the cable insulation layer and sheath layer are automatically cut. Compared with the traditional manual cutting method, the operation efficiency and cutting consistency are significantly improved, conductor damage caused by improper operation is avoided, and the safety, repeatability and standardization of cable repair operations are improved.

[0025] (2) The cutting part is fixed on the fixed seat by the first mounting groove and the first bolt. This not only ensures the stability of the cutting part during the dynamic cutting process and prevents loosening or displacement caused by vibration or uneven force, but also supports quick disassembly and assembly, making it convenient to replace worn parts and debug the equipment.

[0026] (3) The design of the combination structure of slide rail, waist-shaped hole and third bolt enables continuous adjustment of the spacing between the limit blocks on both sides, adapting to cables of different outer diameters. The repair needs of multiple specifications of cables can be met without replacing the limit components, significantly improving the versatility and operational flexibility of the device. Attached Figure Description

[0027] Figure 1This is a schematic diagram of the overall structure of this solution.

[0028] Figure 2 yes Figure 1 A schematic diagram of the hidden part of the structure.

[0029] Figure 3 yes Figure 2 A schematic diagram of the hidden part of the structure.

[0030] Figure 4 This is a schematic diagram of the fixed base structure in this scheme.

[0031] Figure 5 yes Figure 4 A schematic diagram of the structure facing another direction.

[0032] In the diagram, 1 is the support frame; 2 is the limiting block; 3 is the cutting assembly; 4 is the cutting piece; 5 is the fixing seat; 6 is the first mounting groove; 7 is the first threaded hole; 8 is the second mounting groove; 9 is the second bolt; 10 is the slide rail; 11 is the third bolt; 12 is the first support plate; and 13 is the fourth bolt. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] like Figures 1 to 5 As shown, this solution provides an online cutting device for cutting the insulation and sheath layers of a cable. The cutting device includes: a support frame 1, which is mounted on the cable transmission path; at least two limiting blocks 2 located on opposite sides are provided on the support frame 1, and the two limiting blocks 2 respectively move against the radial sides of the cable to limit the lateral displacement of the cable; a cutting assembly 3, which is mounted on the support frame 1 and has a cutting element 4, which is located between the oppositely arranged limiting blocks 2, and one end is detachably mounted on the support frame 1, and the other end extends into the cable transmission path and points towards the outer surface of the cable, for cutting the insulation and sheath layers of the cable during transmission; the cutting element 4 includes a cutting edge with an adjustable height relative to the support frame 1.

[0036] The cutting piece 4 is equipped with various specifications of different blade heights. When the outer diameter of the cable or the thickness of the insulation layer or sheath layer changes, the initial distance between the blade and the cable surface can be adjusted by replacing the cutting piece 4 with the corresponding specification, thereby reasonably controlling the cutting depth and avoiding excessive cutting that could damage the internal conductor or shielding layer of the cable.

[0037] During operation, support frame 1 is installed on the cable transmission path at the repair station, and the cable continuously passes through support frame 1 under traction. Limiting block 2 provides lateral positioning for the cable, and the cutting edge of cutting component 4 contacts the outer surface of the cable, completing the linear cutting of the insulation and sheath layers during relative movement. This solution, through the combination of relatively arranged limiting blocks 2 and modular cutting component 4, achieves automated cutting of the cable insulation and sheath layers, replacing the traditional manual cutting method, significantly improving work efficiency and cutting consistency; avoiding conductor damage caused by improper human operation, and enhancing the safety, repeatability, and standardization of cable repair operations.

[0038] To enable the detachable connection of the cutting component 4 to the support frame 1, the cutting assembly 3 also includes a fixing seat 5, which is connected to the support frame 1, and the cutting component 4 is detachably mounted on the fixing seat 5.

[0039] Specifically, the fixing base 5 is provided with a first mounting groove 6, and one end of the cutting piece 4 is inserted into the first mounting groove 6; the side wall of the fixing base 5 is provided with a first threaded hole 7 that communicates with the first mounting groove 6, and the first bolt passes through the first threaded hole 7 and abuts against the side of the cutting piece 4, thereby firmly fixing it.

[0040] Through the dual function of "positioning in the first mounting groove 6 and locking in the first bolt", the structural stability of the cutting part 4 during the dynamic cutting process is significantly improved, avoiding displacement or loosening caused by vibration or uneven force, ensuring that the cutting edge position of the cutting part 4 is constant, and improving cutting accuracy.

[0041] The cutting component 4 is fixed in the first mounting groove 6 of the fixing base 5 via a plug-in mounting structure, and clamping force is applied from the side by the first bolt 7. When the cutting component 4 needs to be replaced due to wear or change of cable specifications, the operator can operate according to the following steps:

[0042] Loosen the first bolt 7 to release the clamping force on the cutting part 4;

[0043] Remove the worn cutting piece 4 from the first mounting slot 6;

[0044] Select the appropriate cutting piece 4 according to the cable outer diameter and the thickness of the insulation and sheath layers;

[0045] Insert the new cutting piece 4 into the first mounting slot 6 and adjust its position to the target cutting depth;

[0046] Tighten the first bolt 7 to the specified torque value to ensure that the cutting part 4 is firmly fixed.

[0047] This replacement method, through its standardized plug-in and bolt-locking structure, significantly simplifies the operation process, reduces replacement time, and thus improves the continuity and adaptability of rework operations.

[0048] The clamping force of the first bolt 7 is adjusted by torque control to prevent deformation of the cutting part 4 due to overtightening or detachment of the cutting part 4 due to overloosening. At the same time, the lateral clamping method does not obstruct the cutting edge area of ​​the cutting part 4, making it convenient to observe and calibrate the position of the cutting edge of the cutting part 4 after installation.

[0049] To ensure a reliable connection between the fixed seat 5 and the support frame 1, the support frame 1 is provided with a second mounting groove 8. The fixed seat 5 is embedded in the second mounting groove 8, and both sides of the fixed seat 5 are respectively fitted and pressed against the inner wall of the second mounting groove 8 to achieve lateral positioning and limiting. At the same time, the support frame 1 is provided with a second threaded hole that communicates with the second mounting groove 8. The second bolt 9 passes through the second threaded hole and extends into the second mounting groove 8, pressing against the side of the fixed seat 5 to firmly fix it.

[0050] The cooperation between the fixed base 5 and the second mounting slot 8 enables precise lateral positioning of the fixed base 5 and provides effective limiting through side wall clamping, significantly improving the overall rigidity of the cutting assembly 3 and preventing displacement or shaking caused by cutting reaction force or cable transmission vibration, thus ensuring the stability and consistency of the cutting operation. The dual fixing method of "limiting through the second mounting slot 8 and locking with the second bolt 9" utilizes the slot body to provide surface contact support and applies preload through the second bolt 9, forming a reliable mechanical connection. This structure has excellent vibration resistance, effectively preventing loosening or failure during long-term equipment operation, improving safety and durability. Furthermore, the fixed base 5 adopts an embedded installation design and is locked with the second bolt 9, allowing for quick disassembly and replacement without complex alignment or special tools. When replacing the cutting assembly 3 or performing equipment maintenance, simply loosening the second bolt 9 allows the fixed base 5 to be removed, simplifying operation and significantly improving maintenance efficiency and on-site response speed.

[0051] In order to make the distance between the relatively set limit blocks 2 adjustable, the support frame 1 is provided with slide rails 10 on opposite sides, and each slide rail 10 is connected to a limit block 2.

[0052] Specifically, the slide rail 10 has an oblong hole extending along its length, and the limiting block 2 has a through hole. The third bolt 11 passes through the through hole and slides in the oblong hole, with one end extending into the oblong hole and fastened to the slide rail 10, thereby fixing the limiting block 2. After the third bolt 11 is loosened, the limiting block 2 can slide along the oblong hole to achieve position adjustment.

[0053] The two limit blocks 2 can move independently on their respective slide rails 10, enabling continuous adjustment of the spacing and adapting to cables of different outer diameters. This eliminates the need to replace the limit components, meeting the repair needs of multiple cable specifications and significantly improving the device's versatility and operational flexibility.

[0054] The two limit blocks 2 can be adjusted separately, which makes it easy to adjust the centering according to the actual center position of the cable, ensuring that the contact pressure applied to both sides of the cable in the radial direction is uniform, avoiding cable damage or local wear of the limit blocks 2 due to uneven load, and extending the service life of the equipment.

[0055] By engaging the third bolt 11 with the oblong hole, the limiting block 2 can be securely locked onto the slide rail 10 after adjustment, effectively resisting friction and vibration loads during cable transmission, preventing displacement during operation, and ensuring the stability and repeatability of the cutting operation. The combination structure of the slide rail 10, oblong hole, and third bolt 11 is simple and easy to manufacture. Adjustment only requires tightening or loosening the third bolt 11 to complete the position setting, making the operation intuitive and efficient, suitable for quick on-site adjustments.

[0056] More preferably, the support frame 1 includes a first support plate 12 and a second support plate, with the limiting block 2 and the cutting component 3 both disposed on the first support plate 12, achieving a centralized layout of functional components on one side. This design facilitates spatial coordination and assembly debugging among the components, while also enabling quick access to relevant components during later maintenance, significantly improving maintenance efficiency.

[0057] More preferably, the first support plate 12 and the second support plate are connected by a fourth bolt 13 to form a stable frame structure. The support frame 1 spans the cable transmission path, and its first support plate 12 and second support plate are respectively installed on both sides of the production line at appropriate positions and are fixed as a whole by the fourth bolt 13.

[0058] The first support plate 12 and the second support plate are connected by the fourth bolt 13 to form a closed frame, which significantly improves the overall rigidity and bending and torsion resistance of the support frame 1, effectively resists the reaction force generated during the cutting process and the vibration caused by cable transmission, prevents positioning inaccuracy caused by loosening or deformation, and ensures the accuracy of operation.

[0059] The support frame 1 adopts a transverse design, eliminating the need for foot adjustments or welding. It can be directly fastened to the production line frame using the fourth bolt 13, making the installation process simple and efficient. This method easily ensures symmetry on both sides, enabling rapid and accurate positioning of the device along the cable path, improving the consistency and alignment of equipment installation. Furthermore, the fourth bolt 13 connection not only provides reliable high-strength fixing but also supports quick disassembly and assembly, facilitating equipment relocation, maintenance, or production line modifications, enhancing the flexibility and reusability of the device.

[0060] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0062] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An online cutting device for cutting the insulation layer and sheath layer on a cable, characterized in that, The cutting device includes: A support frame is erected along the cable transmission path; The support frame is provided with at least two limiting blocks located on opposite sides. The two limiting blocks respectively move against the two radial sides of the cable to limit the lateral displacement of the cable. A cutting assembly, which is disposed on the support frame and has a cutting element, the cutting element being located between the opposing limiting blocks, one end being detachably disposed on the support frame, and the other end extending toward the cable transmission path and pointing toward the outer surface of the cable, for cutting its insulation layer and sheath layer during the transmission of the cable; The cutting element includes a height-adjustable cutting edge relative to the support frame. When the outer diameter of the cable and the thickness of its insulation and sheath layers change, the distance between the cutting edge and the cable can be changed by replacing the cutting element with one having a different cutting edge height.

2. The online cutting device as described in claim 1, characterized in that, The cutting assembly also includes a fixing base, which is connected to the support frame, and the cutting element is connected to the fixing base.

3. The online cutting device as described in claim 2, characterized in that, The mounting base is provided with a first mounting groove, and one end of the cutting element is inserted into the first mounting groove.

4. The online cutting device as described in claim 3, characterized in that, The side wall of the fixing base is provided with a first threaded hole, which communicates with the first mounting groove. One end of the first bolt passes through the first threaded hole and abuts against the cutting part, thereby fixing the cutting part on the fixing base.

5. The online cutting device as described in claim 1, characterized in that, The support frame is provided with a second mounting groove, the fixing seat is embedded in the second mounting groove, and the two sides of the fixing seat are respectively abutted against the inner wall of the second mounting groove.

6. The online cutting device as described in claim 5, characterized in that, The support frame is provided with a second threaded hole, which communicates with the second mounting groove. One end of the second bolt passes through the second mounting groove and abuts against the fixing seat, thereby fixing the fixing seat in the second mounting groove.

7. The online cutting device as described in claim 1, characterized in that, The support frame is provided with two slide rails on opposite sides, and each slide rail is connected to a limiting block.

8. The online cutting device as described in claim 7, characterized in that, The slide rail is provided with an oblong hole, the limiting block is provided with a through hole, and one end of the third bolt passes through the through hole and is connected in the oblong hole.

9. The online cutting device as described in claim 1, characterized in that, The support frame includes a first support plate and a second support plate, and the limiting block and the cutting component are both disposed on the first support plate.

10. The online cutting device as described in claim 9, characterized in that, The first support plate and the second support plate are connected by a fourth bolt.

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