Rotary cutting device and rapid maintenance method for high-voltage cable connector of electron beam welding machine
Through the rotary cutting device, the steps are cut out on the insulating layer, and combined with the welding of the shielding layer electrode and the copper core electrode, the equipment short circuit problem caused by the insulation failure of the high-voltage cable joint of the electron beam welding machine is solved, and the rapid maintenance of the high-voltage cable joint is achieved , reduces maintenance costs and time.
Patent Information
- Application Number
- CN202411228017.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2024-12-31
AI Technical Summary
The high-voltage cable joints of electron beam welding machines are prone to insulation failure after long-term use, resulting in short circuits in the equipment. The high-voltage cables are expensive and the lack of prefabricated parts leads to difficulty in repair.
Design a rotary cutting device, including a guide cylinder, a bracket, a rotary cutting knife and a fastening component, and the steps are cut on the insulating layer by measuring and adjusting the rotary cutting depth, and the welding of the shielding layer electrode and the copper core electrode can be achieved with high voltage. Quick repair of cable connectors.
The process of processing steps on the insulating layer is simplified, the rapid maintenance of high-voltage cable joints is realized, the maintenance cost and time is reduced, and the problem of long-term equipment shutdown is solved.
Smart Images
Figure CN119231389A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of cable joints, and in particular to a rotary cutting device and a method for quickly repairing a high-voltage cable joint of an electron beam welding machine. Background Art
[0002] High-voltage cable is an important component of high-voltage transmission of electron beam welding machine, carrying a working voltage of more than 35KV. High-voltage cable of electron beam welding machine adopts single-core flexible multi-layer structure, which can be bent and deformed moderately. Figure 1 The high-voltage cable 200 is composed of four parts from the outside to the inside, namely, the outer skin layer 1, the shielding layer 2, the insulating layer 3 and the copper core 4. During the long-term use of the equipment, it was found that after the electron beam welder was used for a few years, the equipment was prone to short circuit. After inspection and analysis, it was found that the insulation failure of the connection joints at both ends of the high-voltage cable 200 was caused. Once the insulation of the high-voltage cable joint fails, the entire high-voltage cable 200 cannot be used, and the high-voltage cable 200 is expensive (usually a cable of about 5 meters costs more than 10,000 yuan). If there are no pre-prepared spare parts, the equipment will be shut down for a long time and cannot be used.
[0003] However, the structure of the electron beam welding machine high voltage cable joint is as follows Figure 2 and Figure 3 As shown, the outer skin 1 and shielding layer 2 of the cable are peeled off for a certain length, and then the shielding layer electrode 7 is installed on the shielding layer 2, the copper core 4 is exposed for a certain length, and the copper core electrode 5 is installed on the copper core 4. The insulating layer 3 is provided with a step 6 near the copper core electrode 5, and the step 6 is sleeved with a polytetrafluoroethylene reinforcing sleeve 8 (the two are interference fit). It can be seen that its structure is special and special for a special machine, and it is usually impossible to buy pre-prepared parts. Therefore, how to make and repair the high-voltage cable joint of the electron beam welding machine is an urgent problem to be solved in this field, and the difficulty in making the high-voltage cable joint lies in the molding of the front end of the insulating layer. It is necessary to process a coaxial step on this flexible material. Therefore, how to process the step on the insulating layer is the key to making and repairing the high-voltage cable joint of the electron beam welding machine. Summary of the invention
[0004] One of the purposes of the present invention is to provide a rotary cutting device to process steps on the insulating layer to overcome the difficulty of making and repairing high-voltage cable joints of electron beam welding machines.
[0005] The present invention is achieved through the following technical solutions:
[0006] A rotary cutting device, comprising:
[0007] A guide cylinder, the inner diameter of which matches the outer diameter of the insulation layer of the high-voltage cable;
[0008] The bracket is fixedly connected to one end of the guide cylinder and is provided with a guide hole coaxial with the guide cylinder, and the diameter of the guide hole also matches the inner diameter of the guide cylinder;
[0009] The rotary cutter has a slide groove on the bracket along the radial direction of the guide cylinder, and the rotary cutter is arranged in the slide groove; and
[0010] The fastening component is fixedly connected to the bracket and is used to fix the rotary cutter.
[0011] Optionally, the fastening component is a fastening screw connected to the side of the slide groove.
[0012] Optionally, both sides of the sliding groove are connected with the fastening screws.
[0013] Optionally, the fastening component includes a connecting seat, an adjusting screw and a nut block, the connecting seat is fixedly connected to one end of the slide slot, the adjusting screw is rotatably connected to the connecting seat, and the nut block is fixedly connected to the rotary cutter and cooperates with the adjusting screw through a thread.
[0014] Optionally, the rotary cutting device further comprises a top seat and a positioning block, wherein the top seat is fixedly connected to the bracket, and the positioning block is arranged on the top seat and is used to abut against the end of the high-voltage cable.
[0015] Optionally, the positioning block is rotatably connected to the top seat.
[0016] Optionally, a bushing is detachably connected to the interior of the guide cylinder.
[0017] The present invention also provides a method for quickly repairing a high-voltage cable joint of an electron beam welding machine, using any of the rotary cutting devices described above, comprising the following steps:
[0018] S1. Measure and record the relevant dimensions of the original high-voltage cable connector;
[0019] S2. Cut off the damaged part of the original high-voltage cable connector and keep the shielding layer electrode, copper core electrode and polytetrafluoroethylene reinforced sleeve;
[0020] S3, according to the size measured in step S1, peeling off the outer layer of the high-voltage cable to a target length;
[0021] S4, according to the size measured in step S1, the shielding layer of the high-voltage cable is stripped to a target length, and a welding length of the shielding layer electrode is reserved;
[0022] S5, inserting the insulating layer of the high-voltage cable into the guide cylinder of the rotary cutting device, adjusting the rotary cutting depth of the rotary cutter according to the size measured in step S1, fixing the rotary cutter by a fastening component, and manually rotating the rotary cutting device to rotary cut a step in the insulating layer;
[0023] S6, insert the shielding layer electrode and weld it to the shielding layer;
[0024] S7, welding the copper core electrode and the copper core;
[0025] S8, sleeve the polytetrafluoroethylene reinforcement sleeve on the step cut out in step S5.
[0026] Optionally, before step S8, the steps on the insulating layer are cleaned and dried.
[0027] The technical solution of the present invention has at least the following advantages and beneficial effects: In the present invention, a rotary cutting device is provided, which can process a step for installing a polytetrafluoroethylene reinforced sleeve on the insulation layer of a high-voltage cable connector, thereby overcoming the difficulty in making a high-voltage cable connector; when in use, the insulation layer of the high-voltage cable is inserted into the guide cylinder of the rotary cutting device, the rotary cutter is adjusted to a suitable rotary cutting depth and fixed by a fastening component, and then the rotary cutting device is manually rotated to rotary cut a step on the insulation layer, and the operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.
[0029] Figure 1 It is a structural schematic diagram of a high voltage cable;
[0030] Figure 2 It is a structural schematic diagram of a high voltage cable connector;
[0031] Figure 3 This is an exploded view of the high voltage cable connector;
[0032] Figure 4 A schematic structural diagram of a rotary cutting device provided in Example 1;
[0033] Figure 5 A diagram showing the use status of a rotary cutting device provided in Example 1;
[0034] Figure 6 A schematic structural diagram of a rotary cutting device provided in Example 2;
[0035] Figure 7 A diagram showing the use status of a rotary cutting device provided in Example 2;
[0036] Icons: 1-outer layer, 2-shielding layer, 3-insulating layer, 4-copper core, 5-copper core electrode, 6-step, 7-shielding layer electrode, 8-PTFE reinforced casing, 9-bracket, 901-guide hole, 902-slide groove, 10-guide cylinder, 11-peeling knife, 12-fastening parts, 1201-connecting seat, 1202-adjusting screw, 1203-nut block, 13-top seat, 14-positioning block, 15-locking screw, 100-peeling device, 200-high voltage cable. DETAILED DESCRIPTION
[0037] Example 1
[0038] refer to Figure 1 This embodiment provides a rotary cutting device, including a guide cylinder 10, a bracket 9, a rotary cutter 11 and a fastening component 12. The inner diameter of the guide cylinder 10 matches the outer diameter of the insulating layer 3 of the high-voltage cable 200, that is, the inner diameter of the guide cylinder 10 is equal to the outer diameter of the insulating layer 3, so that the insulating layer 3 can penetrate into the guide cylinder 10, and the guide cylinder 10 can play a centering role. The bracket 9 is fixedly connected (for example, welded) to one end of the guide cylinder 10 and is provided with a guide hole 901 coaxial with the guide cylinder 10, and the diameter of the guide hole 901 also matches the inner diameter of the guide cylinder 10, that is, the guide hole 901 is equivalent to the extension hole of the inner hole of the guide cylinder 10. A sliding groove 902 is provided on the bracket 9 along the radial direction of the guide cylinder 10, and the rotary cutter 11 is arranged in the sliding groove 902, that is, the position of the rotary cutter 11 in the sliding groove 902 can be adjusted. After adjustment, the rotary cutter 11 is fixed by the fastening component 12.
[0039] When in use, the insulating layer 3 of the high-voltage cable 200 is inserted into the guide cylinder 10 of the rotary cutting device 100, the rotary cutter 11 is adjusted to a suitable rotary cutting depth and the rotary cutter 11 is fixed by the fastening component 12, and then the rotary cutting device 100 is manually rotated to rotary cut out a step 6 in the insulating layer 3. The operation is simple and quick. It can be seen that the rotary cutting device 100 provided by the present invention can process the step 6 for installing the polytetrafluoroethylene reinforced sleeve 8 in the insulating layer 3 of the high-voltage cable connector, thereby overcoming the difficulty of making the high-voltage cable connector.
[0040] In this embodiment, the fastening component 12 is a fastening screw connected to the side of the slide groove 902. Furthermore, both sides of the slide groove 902 are connected with fastening screws. It is easy to understand that the fastening screws fix the rotary cutter 11 by pressing against it.
[0041] In addition, the blade of the rotary cutter 11 is located near the bottom of the slide groove 902 (that is, where the guide cylinder 10 is adjacent to the bracket 9). This arrangement allows the insulating layer 3 to be wrapped on both sides of the blade during rotary cutting (that is, one side is wrapped by the guide cylinder 10, and the other side is wrapped by the guide hole 901 on the bracket 9). Since the insulating layer 3 has a certain flexibility, this arrangement can prevent the rotary cutting action from pulling the insulating layer 3 and causing deformation.
[0042] Example 2
[0043] This embodiment also provides a rotary cutting device. One of the differences from the first embodiment is that the structure of the fastening component 12 is different. In this embodiment, the fastening component 12 includes a connecting seat 1201, an adjusting screw 1202 and a nut block 1203. The connecting seat 1201 is fixedly connected (for example, screw connection or welding) to one end of the slide slot 902. The adjusting screw 1202 is rotatably connected to the connecting seat 1201. The nut block 1203 is fixedly connected to the rotary cutter 11 and is threadedly matched with the adjusting screw 1202. On this basis, it is easy to understand that the adjusting screw 1202 can rotate but cannot move axially. In this way, by rotating the adjusting screw 1202, the position of the rotary cutter 11 in the slide slot 902 can be changed, thereby adjusting the rotary cutting depth of the rotary cutter 11. Furthermore, a knob is provided at the outer end of the adjusting screw 1202 of this embodiment to facilitate the rotation of the adjusting screw 1202.
[0044] The second difference between this embodiment and the first embodiment is that the rotary cutting device 100 of this embodiment further includes a top seat 13 and a positioning block 14. The top seat 13 is fixedly connected to the bracket 9 (for example, screw connection or welding), and the positioning block 14 is arranged on the top seat 13 and is used to abut the end of the high-voltage cable 200. It is worth noting that the distance between the positioning block 14 and the blade of the rotary cutter 11 is the distance to the shoulder of the knife step 6 at the end of the high-voltage cable 200. In this way, it is convenient to determine the axial position of the step 6, and avoid the relative displacement of the high-voltage cable 200 and the rotary cutting device 100 in the axial direction of the high-voltage cable 200 during the rotary cutting process. Furthermore, the positioning block 14 of this embodiment is rotatably connected to the top seat 13 to avoid friction between the end of the high-voltage cable 200 and the positioning block 14 during rotary cutting, which may cause damage to the end of the high-voltage cable 200.
[0045] The third difference between this embodiment and the first embodiment is that a bushing is detachably connected to the inside of the guide cylinder 10. This arrangement facilitates replacement of the bushing according to the size of different high-voltage cables 200, and better ensures that the guide cylinder 10 can center the high-voltage cable 200. In this embodiment, there is no restriction on the manner in which the guide cylinder 10 and the bushing are detachably connected, for example, by connecting a plurality of locking screws 15 that are pressed against the bushing to the outer wall of the guide cylinder 10; or by providing flanges at the ends of the bushing and the ends of the guide cylinder 10, and the two are connected by screws or bolts.
[0046] Example 3
[0047] This embodiment provides a method for quickly repairing a high-voltage cable joint of an electron beam welding machine, using the rotary cutting device 100 provided in Embodiment 1 or Embodiment 2, and comprising the following steps:
[0048] S1. Measure and record the relevant dimensions of the original high-voltage cable connector. It is easy to understand that the measured dimensions include the stripped length of the outer skin layer 1 of the high-voltage cable 200, the stripped length of the shielding layer 2 of the high-voltage cable 200, and the depth and axial length of the step 6;
[0049] S2, cut off the damaged part of the original high-voltage cable connector, and keep the shielding layer electrode 7, the copper core electrode 5 and the polytetrafluoroethylene reinforced sleeve 8;
[0050] S3, according to the size measured in step S1 (i.e., the length of the outer skin layer 1 of the high-voltage cable 200 peeled off), peeling off the outer skin layer 1 of the high-voltage cable 200 to a target length;
[0051] S4. According to the size measured in step S1 (the stripped length of the shielding layer 2 of the high-voltage cable 200), the shielding layer 2 of the high-voltage cable 200 is stripped to a target length, and a welding length of the shielding layer electrode 7 is reserved; in actual applications, a fixed-depth cutting knife can be used when separating the outer skin layer 1 and the shielding layer 2 in steps S3 and S4.
[0052] S5, inserting the insulating layer 3 of the high-voltage cable 200 into the guide cylinder 10 of the peeling device 100, adjusting the peeling depth of the peeling knife 11 according to the dimensions (depth and axial length of the step 6) measured in step S1 and fixing the peeling knife 11 by the fastening component 12, manually rotating the peeling device 100, and peeling out the step 6 in the insulating layer 3;
[0053] S6, insert the shielding layer electrode 7 and weld it to the shielding layer 2, that is, use an electric soldering iron to solder the shielding layer electrode 7 and the shielding layer 2 together;
[0054] S7, welding the copper core electrode 5 and the copper core 4, that is, using an electric soldering iron to solder the copper core electrode 5 and the copper core 4 together, and during the welding process, pay attention to controlling the heat of the copper core 4, so as not to melt the inner side of the insulating layer 3 due to excessive temperature of the copper core 4;
[0055] S8. Sleeve the polytetrafluoroethylene reinforcing sleeve 8 on the step 6 cut out in step S5. Before sleeve connection, clean and dry the step 6 on the insulating layer 3. Preferably, use alcohol for cleaning to facilitate rapid drying.
[0056] It is worth mentioning that the present invention retains the ability to use the shielding layer electrode 7, the copper core electrode 5 and the polytetrafluoroethylene reinforced sleeve 8 normally. By cutting off the damaged joint, re-spinning the sleeve of the insulating layer 3, soldering the shielding layer electrode 7 and the copper core electrode 5, and finally sleeved with the polytetrafluoroethylene reinforced sleeve 8, the joint can be quickly made on site, reducing the cost and time of maintenance.
[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rotary cutting device, characterized in that: include: A guide cylinder, the inner diameter of which matches the outer diameter of the insulation layer of the high-voltage cable; The bracket is fixedly connected to one end of the guide cylinder and is provided with a guide hole coaxial with the guide cylinder, and the diameter of the guide hole also matches the inner diameter of the guide cylinder; The rotary cutter has a slide groove on the bracket along the radial direction of the guide cylinder, and the rotary cutter is arranged in the slide groove; and The fastening component is fixedly connected to the bracket and is used to fix the rotary cutter.
2. The rotary cutting device according to claim 1, characterized in that: The fastening component is a fastening screw connected to the side surface of the slide groove.
3. The peeling device according to claim 2, characterized in that: Both sides of the slide slot are connected with the fastening screws.
4. The peeling device according to claim 1, characterized in that: The fastening component includes a connecting seat, an adjusting screw and a nut block. The connecting seat is fixedly connected to one end of the slide slot, the adjusting screw is rotatably connected to the connecting seat, and the nut block is fixedly connected to the rotary cutter and cooperates with the adjusting screw through a thread.
5. The peeling device according to any one of claims 1 to 4, characterized in that: The rotary cutting device also includes a top seat and a positioning block. The top seat is fixedly connected to the bracket. The positioning block is arranged on the top seat and is used to abut against the end of the high-voltage cable.
6. The peeling device according to claim 5, characterized in that: The positioning block is rotatably connected to the top seat.
7. The peeling device according to any one of claims 1 to 4, characterized in that: The interior of the guide cylinder is detachably connected with a bushing.
8. A method for quickly repairing a high-voltage cable joint of an electron beam welding machine, using the rotary cutting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Measure and record the relevant dimensions of the original high-voltage cable connector; S2. Cut off the damaged part of the original high-voltage cable connector and keep the shielding layer electrode, copper core electrode and polytetrafluoroethylene reinforced sleeve; S3, according to the size measured in step S1, peeling off the outer layer of the high-voltage cable to a target length; S4, according to the size measured in step S1, the shielding layer of the high-voltage cable is stripped to a target length, and a welding length of the shielding layer electrode is reserved; S5, inserting the insulating layer of the high-voltage cable into the guide cylinder of the rotary cutting device, adjusting the rotary cutting depth of the rotary cutter according to the size measured in step S1, fixing the rotary cutter by a fastening component, and manually rotating the rotary cutting device to rotary cut a step in the insulating layer; S6, insert the shielding layer electrode and weld it to the shielding layer; S7, welding the copper core electrode and the copper core; S8, sleeve the polytetrafluoroethylene reinforcement sleeve on the step cut out in step S5.
9. The method for rapid maintenance of high-voltage cable joints of an electron beam welding machine according to claim 8, characterized in that: Before step S8, the steps on the insulating layer are cleaned and dried.