An outer conductor grooving device and grooving method for a leaky coaxial cable

Abstract

An outer conductor grooving device and grooving method for leaky coaxial cables, which use an active roller cutter punching device to punch the copper strip of the outer conductor of the leaky coaxial cable, and pressurize the cutter roller and the bottom roller through a pressure rod, a pressure slider and a pressure wheel arranged from top to bottom, so as to realize circular pressure circular roll cutting, ensure that the gears of the cutter roller and the bottom roller are closely attached without slipping, improve the cutting effect, and have a wide adjustable speed range to meet high-speed continuous production, and can solve the problems of slow punching of the copper strip of the outer conductor of the existing leaky coaxial cable or other coil metal raw materials in the punching press equipment, high die cost and low production efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of communication cable manufacturing, and particularly relates to an outer conductor grooving device and a grooving method for a leaky coaxial cable. Background Art

[0002] At present, during the production of leaky coaxial cables, it is necessary to punch the thin copper strip of the outer conductor to meet the radiation leakage of different frequency band signals for relevant slot types. However, due to the bulky punching machine production equipment, low production speed, low efficiency in replacing dies, and high cost of single slot hole shape dies.

[0003] During the production process of grooving the outer conductor of a leaky coaxial cable, affected by problems such as the bulky punching machine equipment, huge overall die, the need for multiple people to cooperate during replacement and debugging, low efficiency, slow production speed, easy occurrence of poor grooving conditions, and high die maintenance costs, the production cycle of the cable is lengthened by the grooving of the outer conductor, affecting production and delivery.

[0004] The invention disclosed in the publication number CN105436294A discloses a grooving device for the outer conductor of a radiation type leaky coaxial cable. The key points of its technical solution include a base, a pressing handle, an upper die base, a punch, a lower die base and two guide columns; the base includes a bottom plate and columns, the lower ends of the columns are fixed on the bottom plate, the lower die base is fixed on the bottom plate, the upper die base is located above the lower die base, a spring is sleeved on the side of the guide column, the lower end of the guide column is fixed on the lower die base, the upper end of the guide column is fixed on the bottom of the upper die base, the end of the pressing handle is movably connected to the upper end of the column, the middle of the pressing handle is movably connected to the upper part of the upper die base, the upper end of the punch is fixed on the bottom of the upper die base, the punch is located between the two guide columns, a discharge port is opened on the lower die base, and the discharge port is located directly below the punch. A guide rod and a positioning rod are erected on the lower die base, and the discharge port is located between the guide rod and the positioning rod; when the grooving device is in use, the outer conductor of the radiation type leaky coaxial cable to be punched is placed on the lower die base and positioned through the guide rod and the positioning rod. The user only needs to press the pressing handle to make the punch pass through the outer conductor of the radiation type leaky coaxial cable to complete the grooving of the outer conductor of the radiation type leaky coaxial cable. In practical applications, although the punch can be replaced according to the size and shape of the required slot holes to improve the efficiency of grooving the outer conductor of the radiation type leaky coaxial cable and trial-produce a radiation type leaky coaxial cable that meets the requirements, its continuous punching process is relatively slow and the grooving speed needs to be improved. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned existing technologies, and provide an outer conductor grooving device and a grooving method for a leaky coaxial cable. An active roller cutter punching device is used to punch the copper strip of the outer conductor of the leaky coaxial cable, so as to solve the problems of slow punching of the copper strip of the outer conductor of the existing leaky coaxial cable or other coil metal raw materials on the punching machine equipment, high die cost, and low production efficiency.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] A slotted device for the outer conductor of a leaky coaxial cable, comprising a working station frame, a bottom roller, a cutter roller and a pressing device installed on the working station frame, and vertical chutes are correspondingly provided on both side walls of the working station frame;

[0008] The pressing device includes a pressing rod, a pressing slider and a pressing wheel arranged from top to bottom. The outer end surface of the pressing rod is provided with vertical external threads and passes through a mounting bracket fixed on the side wall, and the pressing rod is threadedly connected to the mounting bracket. The pressing slider is fixed to the bottom of the pressing rod and slides up and down synchronously with the pressing rod in the chute, while the pressing wheel is axially arranged in the chute and fits above the cutter roller;

[0009] The cutter roller is axially arranged at the bottom of the chute, and the bottom roller is axially located below the cutter roller and installed at the bottom of the working station frame, and the bottom roller drives the cutter roller to rotate through gears.

[0010] A pressing roller for stabilizing the tape is further provided on the working station frame, and the pressing roller is located on the lower tape inlet side of the working station frame;

[0011] A voltage stabilizing roller for stabilizing the tape is further provided on the working station frame, and the pressing roller is located on the upper tape outlet side of the working station frame.

[0012] A scraper plate is further fixedly installed on the working station frame, and the scraper plate forms an angle of 80° - 90° with the outlet direction of the tape.

[0013] Cutting edges are arranged periodically on the cutter roller. The cutting edges are the same as the shape of the tape slots to be slotted, and the inside of the cutting edges is hollow and provided with radially arranged spring pins.

[0014] The spring pin includes a thimble and a spring body concentrically arranged inside the cutter roller. The inner end surface of the spring body is fixed to the cutter roller shaft, the outer end surface of the spring body is fixed to the base of the thimble, and the width of the base of the thimble is greater than the width of the cutting edge, and the thimble passes through the cutting edge and protrudes 2 - 3 mm from the cutting edge.

[0015] The pressing wheel is a double pressing wheel, and the cutter roller is pressed by the double pressing wheel and closely fits with the bottom roller in a round - pressing - round mode.

[0016] The slotting method of the slotted device for the outer conductor of the leaky coaxial cable includes the following steps:

[0017] (1) Feeding the coiled outer conductor tape through a tape - feeding device, and the tape - feeding device is controlled by an electric control system;

[0018] (2) The tape is pressed by the pressing roller to a certain angle and stably passes through the bottom roller;

[0019] (3) Rotate the pressure rod to adjust the pressure of the pressure wheel on the cutter roller, so that the material tape is closely attached to the outer surface of the bottom roller for cutting;

[0020] (4) After the material tape is cut, the angle is raised. Through the scraper plate located above, the waste material that is not completely separated is completely separated from the material tape under the action of the scraper plate, and the waste material is separated;

[0021] (5) The material tape after waste material separation passes through the pressure stabilizing roller at the upper end, and then is stably conveyed to the winding device to be wound into a roll.

[0022] Further, in step (1), the material tape is unwound stably and continuously at a high speed through the magnetic powder clutch unwinding device, and the tension of the material tape is synchronized to the electric control system of the unwinding device through the unwinding sensor to ensure that the unwinding and winding speeds and tensions of the material tape are consistent.

[0023] Further, in step (5), the tension of the material tape is synchronized to the electric control system of the unwinding device through the winding sensor of the winding device to ensure that the unwinding and winding speeds and tensions of the material tape are consistent.

[0024] Further, the scraper plate is made of a stainless steel scraper plate or a nylon scraper plate.

[0025] The beneficial effects of the present invention are:

[0026] (1) For the outer conductor grooving device and grooving method of the leaky coaxial cable, an active roller cutter punching device is used to punch the copper tape of the outer conductor of the leaky coaxial cable. The cutter roller and the bottom roller are pressurized through the pressure rod, pressure slider and pressure wheel arranged from top to bottom, realizing circular pressure circular roller cutting, ensuring that the cutter roller and the bottom roller gears are closely attached without slipping, improving the cutting effect, and having a wide adjustable speed range to meet high-speed continuous production. It can solve the problems of slow punching of the copper tape of the outer conductor of the existing leaky coaxial cable or other coil metal raw materials in the punching press equipment, high die cost and low production efficiency.

[0027] (2) Adopting the roller cutter mode, actively and quickly unwinding and cutting holes before and after for production, which can effectively improve the production speed, and the cost of a single slot hole shape die is low, and it is more convenient and easy to operate to replace the die; fewer die replacement and debugging personnel, high efficiency: only one person is needed to replace the die, and the debugging is simple and convenient.

[0028] (3) The grooving defect rate is low. The inside of the cutting edge is hollow, and spring pins are arranged radially. When the material tape passes through, corresponding-sized slot holes are cut out of the material tape by extrusion, and the waste material is ejected by the spring pins. The waste material that cannot be completely ejected can be ejected at a certain angle by the spring pins, which is convenient for complete separation when passing through the scraper plate.

[0029] (4)A scraper plate is fixedly designed on the workbench, and the scraper plate forms an angle of 80° - 90° with the outlet direction of the strip, so that the strip is lifted by a certain angle after cutting. The waste that is not completely separated is completely separated and shed from the strip under the action of the scraper plate. Through the scraper plate, the adhesion of the outer conductor after grooving is reduced, the discharge of waste is promoted, and the grooving defect rate is reduced.

[0030] (5)The cost of repairing the mold is low and the cycle is short; due to the small size and low cost of the mold, its repair cost and cycle are reduced, the production speed is increased, and the overall automation level of the equipment is improved. Brief Description of the Drawings

[0031] Figure 1 is a schematic structural view of the present invention;

[0032] Figure 2 is Figure 1 a simplified schematic view of

[0033] Figure 3 is the front view of the workbench;

[0034] Figure 4 is the partial cross-sectional view of the cutter roller;

[0035] Figure 5 is the schematic structural view of the ejector pin. Detailed Embodiment

[0036] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0037] The present invention provides an outer conductor grooving device and a grooving method for a leaky coaxial cable, as Figures 1 to 5 shown.

[0038] An outer conductor grooving device for a leaky coaxial cable includes a workbench 1, a bottom roller 2, a cutter roller 4 and a pressing device 3 installed on the workbench 1, and vertical chutes 11 are correspondingly opened on both side walls of the workbench 1;

[0039] The pressing device 3 includes a pressing rod 31, a pressing slider 32 and a pressing wheel 33 arranged from top to bottom. The outer end surface of the pressing rod 31 is provided with an external thread vertically and passes through a mounting bracket 12 fixed on the side wall, and the pressing rod 31 is threadedly connected with the mounting bracket 12. The pressing slider 32 is fixed at the bottom of the pressing rod 31 and slides up and down in the chute 11 synchronously with the pressing rod 31, while the pressing wheel 33 is axially arranged in the chute 11 and is attached above the cutter roller 3;

[0040] The cutter roller 4 is axially arranged at the bottom of the chute 11, while the bottom roller 2 is axially located below the cutter roller 4 and installed at the bottom of the working station frame 1, and the bottom roller 2 drives the cutter roller 4 to rotate through gears; the bottom roller 2 provides the power input for cutting the outer conductor strip 5, and the side wall gears of the bottom roller 2 drive the cutter roller 4, so that the linear velocities of the outer surfaces of the bottom roller 2 and the cutter roller 4 and the front and rear unwinding and winding traction velocities are the same, ensuring that the cutting slot hole size is stable and meets the process requirements.

[0041] In order to stabilize the strip, lower the angle, and improve the cutting and separating effect of the waste, a lowering roller 13 for stabilizing the strip is further provided on the working station frame 1, and the lowering roller 13 is located on the lower end strip inlet side of the working station frame 1; a voltage stabilizing roller 14 for stabilizing the strip is further provided on the working station frame 1, and the voltage stabilizing roller 14 is located on the upper end strip outlet side of the working station frame 1.

[0042] A scraper plate 15 is further fixedly installed on the working station frame 1, and the scraper plate 15 forms an angle of 80° - 90° with the outlet direction of the strip 5. The scraper plate 15 is made of a stainless steel scraper plate or a nylon scraper plate. After the strip 5 is cut, it is lifted by a certain angle and passes through the stainless steel scraper plate or the nylon scraper plate. The waste that is not completely separated is completely separated from the strip under the action of the scraper plate 15 and falls off.

[0043] The cutter roller 4 is provided with cutting edges 41 arranged periodically. The cutting edges 41 have the same shape as the slot holes of the strip to be grooved, and the inside of the cutting edges 41 is hollow, and spring pins 6 are installed radially; the spring pins 6 include a top pin 61 and a spring body 62 concentrically arranged inside the cutter roller. The inner end face of the spring body 62 is fixed to the cutter roller shaft, the outer end face of the spring body 62 is fixed to the base 611 of the top pin 61, and the width of the base 611 of the top pin is greater than the width of the cutting edge 41. In the normal state, that is, in the non-compressed state, the top pin 61 passes through the cutting edge 41 and protrudes 2 - 3 mm from the cutting edge.

[0044] When the strip 5 passes through, corresponding-sized slot holes are cut out of the strip by extrusion, and the waste is ejected by the spring pins. The waste that cannot be completely ejected can be ejected by a certain angle after passing through the spring pins, which is convenient for complete separation when passing through the scraper plate 15 in the next step.

[0045] In this embodiment, the pressure wheel 33 is a double pressure wheel, and the cutter roller 4 is pressed by the double pressure wheel and is in close fit with the bottom roller in a round-to-round mode, ensuring that the gears of the cutter roller 4 and the bottom roller 2 are tightly attached without slipping and improving the cutting effect.

[0046] The grooving method of the outer conductor grooving device of the leaky coaxial cable includes the following steps:

[0047] (1) Feed the coiled outer conductor strip through the tape feeding device, and the tape feeding device is controlled by an electric control system;

[0048] (2) The strip is pressed down by the pressing roller to a certain angle and stably passes through the bottom roller;

[0049] (3) Rotate the pressing rod to adjust the pressure of the pressing wheel on the cutting roller, so that the strip closely adheres to the outer surface of the bottom roller for cutting;

[0050] (4) After the strip is cut, the angle is raised. Through the scraper plate located above, the waste that is not completely separated is completely separated from the strip under the action of the scraper plate, and the waste is separated;

[0051] (5) The strip after waste separation passes through the pressure stabilizing roller at the upper end, and then is stably conveyed to the winding device to be wound into a roll.

[0052] In step (1), the strip is stably and continuously fed at a high speed through the magnetic powder clutch unwinding device, and the strip tension is synchronized to the electric control system of the unwinding device through the unwinding sensor to ensure that the unwinding and rewinding speeds and tensions of the strip are consistent.

[0053] In step (5), the strip tension is synchronized to the electric control system of the unwinding device through the winding sensor of the winding device to ensure that the unwinding and rewinding speeds and tensions of the strip are consistent.

[0054] During actual processing, the specific steps are as follows:

[0055] A11: The outer conductor strip is stably and continuously fed at a high speed through the magnetic powder clutch unwinding device;

[0056] A12: The strip tension is synchronized to the electric control system through the unwinding sensor of the unwinding device to ensure that the unwinding and rewinding speeds and tensions of the strip are consistent, and to ensure that the cutting slot hole size is stable and meets the process requirements;

[0057] A13: The strip is pulled by the unwinding traction to apply a pulling force to the strip for active feeding, and its speed can be adjusted from 0 to 40 m / min;

[0058] A14: The strip speed of the outgoing traction strip is synchronized to the electric control system through the unwinding sensor to ensure that the unwinding and rewinding speeds and tensions of the strip are consistent, and to ensure that the cutting slot hole size is stable and meets the process requirements;

[0059] A21: The strip is stabilized by the pressing roller, the angle is pressed down, and the effect of cutting and separating waste is improved;

[0060] A22: The die-cutting station is integrally installed inside the station rack and fixed by bolts to improve the overall stability;

[0061] A23: The strip passes through the bottom roller, which closely adheres to the outer surface of the bottom roller, and the bottom roller provides the power input for cutting the strip. The side wall gear of the bottom roller is linked to the cutting roller, so that the linear speeds of the outer surfaces of the bottom roller and the cutting roller and the front and rear unwinding and rewinding traction speeds are the same, ensuring that the cutting slot hole size is stable and meets the process requirements;

[0062] A24: The strip passes through the cutter roller. The cutting edges are set periodically on the roller cutter. The shape of the cutting edge is a cutting slot hole shape. The inside of the cutting edge is hollow, and spring pins are installed. When the strip passes through, the strip is cut into slot holes of corresponding sizes by extrusion, and the waste is ejected by the spring pins. The waste that cannot be completely ejected can be ejected at a certain angle after passing through the spring pins, which facilitates the complete separation in the next step.

[0063] A25: The cutter roller is pressed tightly in a round pressing round mode through double pressure wheels to ensure that the cutter roller and the bottom roller gears are in close contact without slipping, improving the cutting effect.

[0064] A26: The double pressure adjustment knobs arranged at the top of the pressure lever ensure that the pressure is adjustable, the adjustment is intuitive and convenient. During the feeding and cutting process, the degree of tightening of the adjustment knob is adjusted to ensure that the cutter roller cuts the strip smoothly.

[0065] A27: After the strip is cut, it is lifted at a certain angle. Through the stainless steel scraper plate or nylon scraper plate, the waste that is not completely separated is completely separated and falls off from the strip under the action of the scraper plate.

[0066] A28: The strip after cutting is stably conveyed to the winding device through the upper voltage stabilizing roller.

[0067] A31: The outer conductor strip passes through the winding sensor of the winding device, synchronizing the strip tension to the electric control system to ensure that the strip winding and unwinding speeds and tensions are consistent, and ensuring that the sizes of the cutting slot holes are stable and meet the process requirements.

[0068] A32: The strip is pulled by the winding traction to apply a pulling force to the strip for active winding, and its speed can be adjusted from 0 to 40 m / min.

[0069] A33: The strip passes through the winding sensor, synchronizing the strip tension to the electric control system to ensure that the strip winding and unwinding speeds and tensions are consistent, and ensuring that the sizes of the cutting slot holes are stable and meet the process requirements.

[0070] A34: The winding pneumatic pressure roller presses tightly on the winding device to ensure stable winding.

[0071] A35: The strip passes through the winding device, and the winding device is equipped with a synchronous motor to ensure that the winding device runs at a high speed and stably without stopping winding.

[0072] If words such as "first" and "second" are used to limit components in this patent, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description, and these words have no special meaning.

[0073] The foregoing has shown and described the basic principles, principal features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, various changes and modifications can still occur to the present invention, and all such changes and modifications fall within the scope of the claimed invention. The scope of the present invention claimed is defined by the appended claims and their equivalents.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "center", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus cannot be construed as a limitation on the protected content of the present invention.

Claims

1. An outer conductor grooving device for a leaky coaxial cable, characterized in that, It includes a workbench, a bottom roller, a knife roller and a pressing device installed on the workbench. Vertical chutes are correspondingly arranged on both side walls of the workbench. The pressing device includes a pressing rod, a pressing slider and a pressing wheel arranged from top to bottom. The outer end face of the pressing rod is provided with external threads arranged vertically and passes through a mounting bracket fixed on the side wall. The pressing rod is threadedly connected to the mounting bracket. The pressing slider is fixed at the bottom of the pressing rod and slides up and down in the chute synchronously with the pressing rod. The pressing wheel is axially arranged in the chute and is in contact with the upper part of the knife roller. The knife roller is axially arranged at the bottom of the chute, and the bottom roller is axially located below the knife roller and installed at the bottom of the workbench. The bottom roller drives the knife roller to rotate through gears. A scraping plate is also fixedly installed on the workbench. Periodically arranged cutting edges are provided on the knife roller. The cutting edges have the same shape as the slot holes of the strip to be grooved. The inside of the cutting edges is hollow and a spring needle arranged radially is installed.

2. The outer conductor grooving device of a leaky coaxial cable according to claim 1, characterized in that: A pressing roller for stabilizing the strip is also provided on the workbench, and the pressing roller is located on the inlet side of the lower end of the workbench. A pressure stabilizing roller for stabilizing the strip is also provided on the workbench, and the pressing roller is located on the outlet side of the upper end of the workbench.

3. The outer conductor grooving device of a leaky coaxial cable according to claim 1, characterized in that: The scraping plate forms an angle of 80°-90° with the outlet direction of the strip.

4. The outer conductor grooving device of a leaky coaxial cable according to claim 1, characterized in that: The spring needle includes a thimble and a spring body concentrically arranged in the knife roller. The inner end face of the spring body is fixed to the knife roller shaft, the outer end face of the spring body is fixed to the base of the thimble, the width of the base of the thimble is greater than the width of the cutting edge, and the thimble passes through the cutting edge and protrudes 2-3 mm from the cutting edge.

5. The outer conductor grooving device of a leaky coaxial cable according to claim 1, characterized in that: The pressing wheel is a double pressing wheel, and the knife roller is pressed by the double pressing wheel to be in close contact with the bottom roller in a round pressing round mode.

6. A grooving method for an outer conductor grooving device of a leaky coaxial cable according to any one of claims 1 to 5, characterized in that, It includes the following steps: (1) Feed the coiled outer conductor strip through a tape feeding device, and the tape feeding device is controlled by an electric control system. (2) The strip is pressed by the pressing roller at a certain angle and stably passes through the bottom roller. (3) Rotate the pressing rod to adjust the pressure of the pressing wheel on the knife roller, so that the strip is closely attached to the outer surface of the bottom roller for cutting. (4) After the strip is cut, the angle is raised. Through the scraping plate located above, the waste material that is not completely separated is completely separated and falls off from the strip under the action of the scraping plate, and the waste material is separated. (5) The strip after waste material separation passes through the pressure stabilizing roller at the upper end, and then is stably conveyed to a winding device to be wound into a coil.

7. The grooving method of an outer conductor grooving device for a leaky coaxial cable according to claim 6, characterized in that: In step (1), the strip is stably and continuously fed at a high speed through a magnetic powder clutch unwinding device, and the strip tension is synchronized to the electric control system of the tape feeding device through an unwinding sensor to ensure that the winding and unwinding speed and tension of the strip are consistent.

8. The grooving method of an outer conductor grooving device for a leaky coaxial cable according to claim 6, characterized in that: In step (5), the strip tension is synchronized to the electric control system of the tape feeding device through the winding sensor of the winding device to ensure that the winding and unwinding speed and tension of the strip are consistent.

9. The grooving method of an outer conductor grooving device for a leaky coaxial cable according to claim 6, characterized in that: The scraping plate is made of a stainless steel scraping plate or a nylon scraping plate.

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