A cable production wire cutting device

Abstract

The utility model provides a kind of wire cutting device for cable production, including cable automatic cutting machine, wire cutting device is set on rack, and is located the upside of winding roller, and the cutting assembly on the rack of cable automatic cutting machine, cutting assembly includes the fixed plate of setting in the upside of winding roller on rack, telescopic push rod is arranged on fixed plate, the output rod end of telescopic push rod is provided with mounting plate, the lower part of mounting plate is provided with cutter, the mounting plate outside the cutter is provided with elastic member, the lower part of elastic member is provided with compression plate, the initial height of compression plate is lower than the height of the lowest point of cutter, the utility model can realize the compression fixed operation to the cable of cutting completion by the effect of the elastic member set outside cutter and the compression plate set in the lower part of elastic member, avoid its due to the instant of cutting cable, the tension of cable itself leads to the splashing of being taut, greatly improve the safety performance of cable cutting, improve the efficiency of cable cutting to some extent.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment technology, specifically to a wire cutting device for cable production. Background Technology

[0002] A cable is a conductor made of one or more insulated conductors and an outer insulating protective layer, used to transmit electricity or information from one place to another. Cables play an irreplaceable role in power transmission and information delivery, and have a significant impact on people's daily lives and production. With the rapid development of urban construction and the increasing number of municipal renovation projects, the renovation of power supply cables is becoming more common, such as burying overhead cables, changing cable routes, and extending substation cable outgoing lines. Cable renovation projects often require cable splicing, that is, cutting the cable and then welding it.

[0003] In existing cutting equipment, when the cutter cuts a cable, especially at the moment of cable breakage, the cable on the take-up roller is subjected to the winding tension at the moment of cutting. The cut end is prone to rapid spattering (the spattering distance can reach 10-15cm), which can not only easily scratch the operator, but may also cause the cable end to get tangled in the equipment parts, causing downtime and posing certain safety hazards, and reducing the efficiency of subsequent cable cutting. Utility Model Content

[0004] In view of this, the present invention provides a cable cutting device for cable production. The device can achieve the clamping and fixing of the cable during and after the cutting process by using an adjustable clamping plate set on the outside of the cutter. This solves the problem that the cable is subjected to winding tension at the moment of cutting, and the cut end is prone to rapid splattering, which can not only easily scratch the operator, but also cause the cable end to wrap around the equipment parts, causing downtime and posing certain safety hazards, and reducing the subsequent cutting efficiency of the cable.

[0005] To solve the above-mentioned technical problems, this utility model provides a cable cutting device for cable production, including an automatic cable cutting machine. The cutting device is mounted on a frame and located directly above the take-up roller. The cutting component on the frame of the automatic cable cutting machine includes a fixed plate mounted directly above the take-up roller on the frame. A telescopic push rod is mounted on the fixed plate, and a mounting plate is mounted at the output end of the telescopic push rod. A cutter is mounted at the lower part of the mounting plate. An elastic element is mounted on the mounting plate located outside the cutter, and a clamping plate is mounted below the elastic element. The initial height of the clamping plate is lower than the lowest point of the cutter. This utility model can achieve the clamping and fixing of the cut cable by means of the elastic element mounted outside the cutter and the clamping plate mounted below the elastic element, avoiding spatter caused by the tension of the cable itself at the moment of cutting, greatly improving the safety performance of cable cutting, and improving the efficiency of cable cutting to a certain extent.

[0006] The elastic elements are divided into two groups, and each group is located on the lower part of the fixed plate on both sides of the cutter. Each group of elastic elements is equipped with a pressure plate at the lower part. The purpose of this is to facilitate the tension return and tensioning operation of the cut cable on the take-up roller and unwind roller, which is safer and more convenient.

[0007] Each elastic element includes a limiting cylinder located at the lower part of the fixed plate. A spring is installed inside the limiting cylinder, and a push rod is located at the lower part of the spring. A clamping plate is located at the lower part of the push rod. This utility model can achieve the clamping and fixing of the cable by utilizing the elasticity of the spring after compression during the cutting process. Moreover, after the output rod of the telescopic push rod retracts to leave the cut cable with the cutter, the spring's restoring force and the clamping plate's own weight can continue to press down on the cable at both ends of the cut part, preventing it from splashing and injuring people or getting stuck in the machine, making it safer and more convenient.

[0008] A through hole is provided on the fixed plate, and the fixed end of the telescopic push rod is located on the upper part of the fixed plate. The output rod of the telescopic push rod passes through the through hole.

[0009] The telescopic push rod can be an electric push rod or a hydraulic push rod.

[0010] The lower part of the clamping plate is equipped with an anti-slip plate, which is made of rubber and has multiple anti-slip protrusions. The purpose of this is to increase friction, prevent the cable from slipping, and also prevent the cable from being damaged.

[0011] The mounting plate has a mounting base at the bottom, and the cutter is located inside the mounting base.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. Significantly improved safety against spatter: This utility model can continuously compress the cable before and after cutting by setting a pressure plate on the outside of the cutter, which greatly reduces the distance of spatter due to cable tension at the moment of cutting, greatly reduces the risk of operator scratches and the occurrence rate of equipment entanglement failure, solves the safety hazards of traditional devices, and is safer and more efficient.

[0014] 2. Significantly improved cutting precision: This invention can prevent cable deviation by symmetrically pressing the double sides of the cutting blade, greatly reducing the skew rate of the cut and eliminating the need for subsequent cable trimming, thus greatly improving production efficiency.

[0015] 3. Enhanced anti-slip and anti-damage performance: This utility model can greatly increase the coefficient of friction through the nitrile rubber anti-slip plate and the diamond-shaped protrusions, greatly reducing the cable slippage rate. At the same time, the elastic pressure is adapted to the insulation layer, and there is no pressure damage.

[0016] 4. Strong adaptability to multiple specifications: This utility model can be adapted to cables of various diameters through spring self-adaptive compression and limit guide design. When changing models, there is no need to adjust the clamping mechanism, which greatly shortens the adjustment time and greatly improves the utilization rate of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cable tangent device for cable production according to this utility model;

[0018] Figure 2 This is a side view of the tangent device for cable production according to this utility model;

[0019] Figure 3 This is a top view of the cable tangent device of this utility model;

[0020] Figure 4 This utility model Figure 3 Sectional view at point AA.

[0021] Explanation of reference numerals in the attached drawings: 100, Automatic cable cutting machine; 110, Frame; 120, Take-up roller; 200, Cutting assembly; 210, Fixing plate; 220, Telescopic push rod; 230, Mounting plate; 240, Cutting blade; 250, Elastic element; 251, Limiting cylinder; 252, Spring; 253, Top rod; 260, Pressure plate; 270, Anti-slip plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0023] like Figure 1-4As shown: This embodiment provides a cable cutting device for cable production, including an automatic cable cutter 100. The cutting device is mounted on a frame 110 and located directly above a take-up roller 120. The frame 110 is welded from Q345B low-alloy high-strength steel, and after welding, it undergoes aging treatment to eliminate internal stress, and the surface is sprayed with epoxy resin anti-rust paint. The automatic cable cutter 100 has a cutting assembly 200 on the frame 110. The cutting assembly 200 includes a fixing plate 210 mounted directly above the take-up roller 120 on the frame 110. The fixing plate 210 is made of 45# steel, milled to ensure flatness, and has a central through hole (0.5-1mm larger in diameter than the output rod of the telescopic push rod 220). The inner wall of the through hole is chrome-plated (0.05mm thick) to reduce friction. A telescopic push rod 220 is mounted on the fixing plate 210, which supports the telescopic push rod 220 and the elastic clamping unit, ensuring the coaxiality and perpendicularity of each component. The output rod end of the telescopic push rod 220 is provided with a mounting plate 230. The mounting plate 230 is made of Q235 steel plate with galvanized surface treatment for corrosion resistance. Weight reduction holes are opened at the four corners to ensure strength while reducing the load on the push rod. A cutter 240 is provided at the lower part of the mounting plate 230. The cutter 240 can be made of W18Cr4V high-speed steel (hardness HRC62-65, red hardness above 600℃). The blade is ground to a 30° bevel angle to ensure sharp cutting and wear resistance. An elastic element 250 is provided on the mounting plate 230 outside the cutter 240. A pressure plate 260 is provided at the lower part of the elastic element 250. The initial height of the pressure plate 260 is lower than the height of the lowest point of the cutter 240. The pressure plate 260 is made of 5mm thick 6061-T6 aluminum alloy (lightweight and high strength). A groove is opened at the bottom for the installation of the anti-slip plate 270. The anti-slip plate 270 is made of nitrile rubber (Shore hardness 70D, oil and aging resistant), and is bonded to the lower part of the clamping plate 260 with epoxy resin adhesive (model WD-60, bonding strength ≥2MPa). The initial height is set so that the lowest point of the clamping plate 260 is 5-8mm lower than the lowest point of the cutter 240 after assembly, ensuring that the cable is clamped before cutting. The cutting assembly 200 is fixed to the pre-set mounting beam of the frame 110 with hex bolts, and the cutter 240 is vertically aligned with the take-up roller 120. The fixed end of the telescopic push rod 220 is bolted to the upper part of the fixed plate 210 through a flange (flange material is Q235 steel, and the bolts are 8.8 grade high-strength stainless steel bolts). This invention utilizes the elastic element 250 located on the outside of the cutter 240 and the pressing plate 260 located below the elastic element 250 to achieve the pressing and fixing of the cut cable, thus avoiding spatter caused by the tension of the cable itself at the moment of cutting. This greatly improves the safety performance of cable cutting and, to a certain extent, increases the efficiency of cable cutting.

[0024] According to one embodiment of the present invention, such as Figure 1-4As shown, the elastic element 250 is divided into two groups, and each group is located at the lower part of the fixing plate 210 on both sides of the cutter 240. Each group of elastic elements 250 is provided with a pressure plate 260 at the lower part. The purpose of this is to facilitate the tension return and tensioning operation of the cut cable on the take-up roller 120 and the unwind roller, which is safer and more convenient.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, each elastic element 250 includes a limiting cylinder 251 located at the lower part of the fixed plate 210. A spring 252 is installed inside the limiting cylinder 251, and a push rod 253 is located below the spring 252. A clamping plate 260 is located below the push rod 253. Specifically, the limiting cylinder 251 is made of 304 stainless steel (highly corrosion-resistant, preventing the spring 252 from rusting due to moisture), and the cylinder wall has an elongated groove for guiding the push rod 253. The limiting cylinder 251 is fixed to the lower part of the mounting plate 230 by welding, symmetrically distributed on both sides of the cutter 240, and symmetrical with the center line of the cutter 240. The spring 252 is a compression spring 252 made of 60Si2Mn alloy spring steel, isothermally hardened, with an elastic limit ≥1200MPa and a fatigue life ≥100,000 cycles. The push rod 253 is made of 45 steel and heat treated. The upper part is provided with a boss (the diameter is slightly larger than the inner diameter of the spring 252) to limit the spring 252. The lower part is threaded to the pressure plate 260. The middle part is welded with a guide pin. The guide pin is embedded in the long groove of the limiting cylinder 251 to prevent the push rod 253 from rotating and the spring 252 from bending to the side.

[0026] This invention utilizes the elastic element 250 to achieve the function of spring 252's recovery force after compression during the cutting process, thereby clamping and fixing the cable. Furthermore, after the output rod of the telescopic push rod 220 retracts and leaves the cut cable with the cutter 240, the recovery force of spring 252 and the weight of the clamping plate 260 continue to press down on the cable at both ends of the cut section, preventing it from splashing and injuring people or getting stuck in the machine, making it safer and more convenient.

[0027] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a through hole is provided on the fixing plate 210, and the fixed end of the telescopic push rod 220 is located on the upper part of the fixing plate 210. The output rod of the telescopic push rod 220 passes through the through hole. After the output rod passes through the through hole of the fixing plate 210, it is threadedly connected to the upper part of the mounting plate 230 (thread specification M16×1.5, equipped with anti-loosening nut).

[0028] The telescopic push rod 220 can be either an electric push rod or a hydraulic push rod. When the telescopic push rod 220 is an electric push rod, the TXD-100 model from Jiangsu Tianyu Automation Equipment Co., Ltd. can be selected (rated thrust 1000N, stroke 50-200mm adjustable, speed 5-50mm / s); when the telescopic push rod 220 is a hydraulic push rod, the DYTZ1000-300 model from Dezhou Lituo Hydraulic Equipment Co., Ltd. can be selected (rated thrust 10kN, stroke 300mm, working pressure 6-12MPa). Both models are equipped with a travel limit switch, with a control accuracy of ±0.5mm.

[0029] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, the lower part of the clamping plate 260 is provided with an anti-slip plate 270. The anti-slip plate 270 is a rubber plate, and its lower part is provided with multiple anti-slip protrusions. The anti-slip protrusions are multiple diamond-shaped anti-slip protrusions integrally formed on the surface of the anti-slip plate 270 to increase the friction with the cable. The purpose of this is to increase the friction and prevent the cable from slipping off, and also to prevent the cable from being crushed.

[0030] The mounting plate 230 has a mounting base at its lower part, and the cutter 240 is set inside the mounting base. The mounting base is made of 45 steel with heat treatment (HRC28-32) and has a "U" shaped structure. It is fixed to the lower part of the mounting plate 230 by internal hex bolts. After the cutter 240 is inserted into the mounting base slot, it is locked with a set screw for easy and quick replacement.

[0031] How to use this utility model:

[0032] First, it should be clarified that the wire cutting device involved in this utility model is mainly used for cutting various types of cables. This utility model takes the cutting of cables after winding as an example to explain its working principle and usage method in detail. The working principle is as follows:

[0033] This device achieves safe and high-precision cutting through a three-level collaborative mechanism of "pre-compression - strong cutting - continuous splash prevention":

[0034] Pre-compression and anti-slip principle: After the cutting program is started, the telescopic push rod 220 drives the mounting plate 230 to move downward. The clamping plates 260 on both sides of the cutter 240 first contact the cable (because the initial height is lower). As the mounting plate 230 continues to descend, the push rod 253 compresses the spring 252 in the limiting cylinder 251. The spring 252 generates elastic pressure (pressure range 50-300N, adaptively adjusted according to the cable diameter). The diamond-shaped protrusions of the anti-slip plate 270 are embedded in the surface of the cable insulation layer (without damaging the insulation layer), forming a reliable anti-slip positioning. At the same time, the double-sided symmetrical compression prevents the cable from shifting.

[0035] Precision cutting principle: The mounting plate 230 descends continuously until the cutter 240 contacts the cable. The high-speed steel cutter 240 cuts the cable under the action of the push rod (the cutting force is adapted by the push rod model to ensure a flat cut). Due to the balanced clamping force on both sides, the cable does not deviate, and the cut skewness is ≤0.5°.

[0036] Anti-splash principle: At the moment of cutting, the cable winding tension causes the cut end to tend to splash, but the restoring force of the spring 252 continues to act on the pressure plate 260, firmly pressing the two ends of the cable at the cut end onto the surface of the winding roller 120, limiting the splash distance to ≤1cm; when the telescopic push rod 220 drives the cutter 240 to rise, the spring 252 slowly rebounds, and the pressure plate 260 descends with the push rod 253 until the cutter 240 is completely detached from the cable and still maintains the pressing state, completely avoiding splash injury or entanglement of equipment.

[0037] Multi-specification adaptation principle: The compression of spring 252 can be adaptively adjusted according to the cable diameter (5-50mm). The long groove of limit cylinder 251 and the guide pin of top rod 253 cooperate to prevent spring 252 from bending to the side. Different specifications of cables can be adapted without replacing parts, greatly improving adaptability.

[0038] The usage method is as follows:

[0039] Equipment debugging and parameter setting:

[0040] Before starting the machine, check the elasticity of spring 252 (press the clamping plate 260, and it should quickly return to its original position without jamming), the adhesion of anti-slip plate 270, and the sharpness of the cutting blade 240.

[0041] Adjust the travel of the telescopic push rod 220 according to the cable diameter (e.g., 20mm) (set by the travel limit switch to ensure that the rise height of the cutter 240 after cutting is ≥30mm), and test the clamping force (detected by the pressure sensor to ensure that the pressure is ≥100N and ≤200N to avoid damaging the cable).

[0042] Calibrate the position of the cutter 240: Fine-tune the cutting assembly 200 by adjusting the adjusting bolts on the mounting beam of the frame 110 so that the cutter 240 is vertically aligned with the center line of the take-up roller 120 (error ≤ 0.5 mm).

[0043] Automatic cutting process:

[0044] When the cable is wound to the set length, the winding roller 120 pauses and triggers the photoelectric sensor (Omron E3Z-D61 type) to send a cutting signal;

[0045] When the telescopic push rod 220 is activated, the mounting plate 230 descends, and the clamping plate 260 first contacts the cable and compresses the spring 252 to form a clamping effect.

[0046] The cutter 240 continues to descend and cuts the cable. During the cutting process, the clamping plate 260 continuously applies pressure to limit cable displacement and spatter.

[0047] After cutting is completed, the telescopic push rod 220 drives the cutter 240 to rise, the spring 252 slowly rebounds, and the clamping plate 260 keeps it pressed until the cutter 240 is completely detached from the cable (the rising time is set to 2-3 seconds).

[0048] The clamping plate 260 resets with the top rod 253, the equipment sends a signal, and the winding roller 120 starts to continue winding, entering the next cycle.

[0049] Maintenance and troubleshooting:

[0050] Clean the insulation debris from the cutting edge of the 240 blade daily (use a copper brush to avoid damaging the cutting edge), and check the fatigue condition of the 252 spring weekly (if the compression decreases by more than 20%, replace the 252 spring of the same model in time).

[0051] When the anti-slip plate 270 is worn (protrusion height ≤ 0.3mm), peel off the old plate with a blade and then re-glu the new anti-slip plate 270 (replacement time ≤ 10 minutes);

[0052] If the blade 240 becomes dull and causes the cut to be crooked, remove the set screw and replace the blade 240. The new blade 240 needs to be sharpened.

[0053] When spring 252 is bent to the side, check the clearance between the guide pin and the long groove of the limit cylinder 251. If the clearance is too large (>0.5mm), replace the guide pin and adjust it.

[0054] This invention utilizes an adjustable clamping plate 260 located on the outside of the cutter 240 to clamp and fix the cable during and after the cutting process. This solves the problem that the cable is subjected to winding tension during the cutting moment, causing the cut end to quickly splatter, which can easily scratch operators and may also cause the cable end to become entangled in equipment parts, leading to machine downtime and posing certain safety hazards, and reducing the efficiency of subsequent cable cutting.

[0055] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model according to the specific circumstances.

[0056] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A wire cutting device for cable production, comprising an automatic cable cutter (100), the wire cutting device being mounted on a frame (110) and located directly above a take-up roller (120), characterized in that: The automatic cable cutting machine (100) has a cutting assembly (200) on its frame (110). The cutting assembly (200) includes a fixed plate (210) positioned directly above a take-up roller (120) on the frame (110). The fixed plate (210) is provided with a telescopic push rod (220). The output rod end of the telescopic push rod (220) is provided with a mounting plate (230). A cutter (240) is provided at the lower part of the mounting plate (230). An elastic element (250) is provided on the mounting plate (230) located outside the cutter (240). A pressure plate (260) is provided at the lower part of the elastic element (250). The initial height of the pressure plate (260) is lower than the height of the lowest point of the cutter (240).

2. The cable cutting device as described in claim 1, characterized in that: The elastic element (250) is divided into two groups, and each group is located at the lower part of the fixing plate (210) on both sides of the cutter (240). Each group of elastic elements (250) is provided with a pressing plate (260) at the lower part.

3. The cable cutting device as described in claim 2, characterized in that: Each elastic element (250) includes a limiting cylinder (251) disposed at the lower part of the fixed plate (210), a spring (252) disposed inside the limiting cylinder (251), a push rod (253) disposed at the lower part of the spring (252), and a pressing plate (260) disposed at the lower part of the push rod (253).

4. The cable cutting device as described in claim 2, characterized in that: The fixed plate (210) has a through hole, and the fixed end of the telescopic push rod (220) is located on the upper part of the fixed plate (210). The output rod of the telescopic push rod (220) passes through the through hole.

5. The cable cutting device as described in claim 2, characterized in that: The telescopic push rod (220) is an electric push rod or a hydraulic push rod.

6. The cable cutting device as described in claim 1, characterized in that: The lower part of the clamping plate (260) is provided with an anti-slip plate (270).

7. The cable cutting device as described in claim 1, characterized in that: The mounting plate (230) is provided with a mounting base at its lower part, and the cutter (240) is disposed in the mounting base.

8. The cable cutting device as described in claim 6, characterized in that: The anti-slip plate (270) is a rubber plate, and its lower part is provided with multiple anti-slip protrusions.

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