Molding processing equipment for main insulating layer of cable

Abstract

The invention relates to the technical field of cable stripping, in particular to cable main insulation layer forming processing equipment which comprises a rotary power unit, a transmission sleeve, a cutting length limiting assembly and a power tool bit. A transmission sleeve is mounted on the rotary power unit, a power tool bit is mounted at the other end of the transmission sleeve in a sleeving manner, and a cutting length limiting assembly capable of sliding and displacing in the length direction of the transmission sleeve is arranged in an inner cavity of the transmission sleeve; the power tool bit is of a cylindrical structure and is provided with a cutting groove penetrating through the inside and the outside, and a blade with a cutting edge extending into the power tool bit is arranged in the cutting groove. The cutting length limiting assembly comprises a sliding groove, a clamp spring support and a top plate, two long-strip-shaped sliding grooves penetrating through the sleeve wall are symmetrically formed in the transmission sleeve in the axial direction, for cables with different stripping lengths, a limiting clamp spring only needs to be pressed by hands, the clamp spring support slides to the needed position in the sliding groove, and then the cables can be stripped. Therefore, different peeling lengths can be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of cable stripping, and particularly to a cable main insulation layer forming and processing device. Background Art

[0002] Since the power supply quality of cables is significantly better than that of overhead lines, the 10kV cable rate has been increasing year by year and has become an important indicator to measure the degree of urban modernization. During the installation and construction of 10kV cables, 10kV cross-linked polyethylene insulated cables are usually used. The production technology of such cable joints mainly relies on manual work, and only a small part is assisted by automatic cutting, but the efficiency is low. It also requires relatively high craftsmanship from technicians. A skilled construction worker usually needs to master it through a large number of process practices, and this kind of experience is very difficult to replicate.

[0003] If the shielding layer stripping process is too long, the stress cone will not be able to completely shield it, resulting in problems such as uneven potential distribution and stress concentration; if the shielding layer stripping process is too short, problems such as insufficient connection strength, small contact area, and concentrated Joule effect will occur. Thus, it is difficult to ensure the construction quality and even shorten the service life of the cable.

[0004] To solve the above problems, a portable electric cable stripper with the application number 202023084296.X drives a transmission shaft to rotate through a hand-held motor, and then drives a stripping device to rotate. The cable is inserted into the stripping sleeve, so that the cutting edge of the stripping blade rotates around the axis of the stripping tube, thereby performing a circular spiral cutting on the insulating skin of the cable. By adjusting the distance between the end of the length adjuster and the cutting edge of the stripping blade, the exposed length of the conductor of the cable can be controlled. When the length adjuster moves, only loosen the bolt to make the limit shaft move axially in the central hole of the stripping tube, thus simplifying the operation procedure, realizing the standardization of the cable stripping process, improving the craftsmanship level of cable stripping and installation, and avoiding cable connection quality problems caused by factors such as technical experience differences and tool differences. However, for a portable electric cable stripper with the application number 202023084296.X, for cables with different diameters or different stripping lengths, its adjustment method is still relatively cumbersome, especially specific tools are required to adjust the fastening fit of each component, and a large amount of operation experience is required to achieve relatively accurate adjustment of the adjustment accuracy.

[0005] In view of the above problems, the present invention proposes a cable main insulation layer forming and processing device, which can achieve fast and accurate adjustment for cables with different diameters or different stripping lengths. Summary of the Invention

[0006] A cable main insulation layer forming and processing device includes: a rotational power unit, a transmission sleeve, a stripping length limiting component, and a power cutter head;

[0007] A drive sleeve is installed on the rotary power unit, and a power tool bit is sleeved and installed at the other end of the drive sleeve. A cutting length limiting component that can slide and displace along its length direction is arranged in the inner cavity of the drive sleeve;

[0008] The power tool bit is of a cylindrical structure and is provided with a cutting groove penetrating inside and outside. A blade with a cutting edge extending into the interior of the power tool bit is arranged in the cutting groove;

[0009] The cutting length limiting component includes a sliding groove, a circlip bracket, and a top plate. Two long strip-shaped sliding grooves penetrating the barrel wall are symmetrically arranged on the drive sleeve in the axial direction, and positioning racks are evenly distributed on both sides of the length direction of the moving groove;

[0010] The circlip bracket includes a mounting seat and a limit circlip. A circular mounting seat with a clearance fit with the inner wall of the drive sleeve, and a top plate for limiting the length of the cable extending into the drive sleeve is arranged on the mounting seat. Two limit circlips extending from the inside of the drive sleeve to both sides of the sliding groove are arranged on the mounting seat. The limit circlip is of an annular structure and abuts against the positioning rack.

[0011] Preferably, a V-shaped opening is arranged at the end of the sliding groove close to the power tool bit. Two elastic rods are symmetrically arranged on the end face of the end of the power tool bit entering the drive sleeve. The directions of the elastic rods point to one end of the drive sleeve and expand away from each other. When the power tool bit is sleeved into the drive sleeve, the end parts of the two elastic rods extending out extend out from the sliding groove, and a V-shaped protrusion matched with the V-shaped opening is arranged on the rod body of the elastic rod.

[0012] Preferably, a first chip guide sleeve is arranged outside the power tool bit. The first chip guide sleeve is a pipe structure closely attached to the outer wall of the power tool bit. One end opening of the first chip guide sleeve is connected to the cutting groove, and the other end opening points to the drive sleeve; a second chip guide sleeve is arranged on the drive sleeve. The second chip guide sleeve is a pipe structure closely attached to the outer wall of the drive sleeve. One section opening of the second chip guide sleeve is sleeved and connected with the first chip guide sleeve, and the other end opening points to the sliding groove.

[0013] Preferably, the cross-section of the contact part of the limit circlip and the positioning rack is tapered, and the tip of the tapered shape meshes with the positioning rack.

[0014] Preferably, a counterweight ball is arranged at the end point of the extending end of the elastic rod. The counterweight ball is provided with a wear-resistant coating, and a groove track matched with the counterweight ball is arranged on the inner wall of the drive sleeve.

[0015] Preferably, a tapered notch is arranged on the drive sleeve close to the power tool bit, and a tapered block matched with the tapered notch is arranged on the power tool bit close to the drive sleeve. When the power tool bit is sleeved into the drive sleeve, the tapered block is embedded into the tapered notch.

[0016] Preferably, the top plate is made of an elastic material.

[0017] Preferably, a plurality of annular chip knives with cutting edges perpendicular to the axial direction of the drive sleeve and pointing to the axis of the drive sleeve are provided on the inner walls of the first chip guide sleeve and the second chip guide sleeve.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. For cables with different stripping lengths, only need to manually press the limit snap ring, slide the snap ring bracket in the sliding groove to the required position, then the adjustment of different stripping lengths can be completed. There is no need to use specific tools to adjust the tight fit of each component. The positioning rack provided in the sliding groove can accurately adjust to the required length even when the operator lacks experience.

[0020] 2. When it is necessary to switch to power tool bits with different calibers to deal with cables of different diameters, there is no need to use specific tools to adjust the tight fit of each component. Only need to manually press the two elastic rods that move away from each other and expand inward into the drive sleeve, then the fastening between the drive sleeve and the power tool bit can be released, reducing the dependence on specific fastening tools and improving the replacement efficiency at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art; in all the drawings, similar elements or parts are generally marked with similar reference numerals; in the drawings, the elements or parts do not necessarily draw according to the actual proportion.

[0022] Figure 1 It is a schematic structural diagram of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the drive sleeve and the stripping length limiting assembly;

[0024] Figure 3 It is a schematic structural diagram of the drive sleeve and the power tool bit.

[0025] In the figure: 1. Rotary power unit; 2. Drive sleeve; 3. Stripping length limiting assembly; 4. Power tool bit; 5. Cutting groove; 6. Blade; 7. Sliding groove; 8. Snap ring bracket; 9. Top plate; 10. Positioning rack; 11. Mounting seat; 12. Limit snap ring; 13. V-shaped opening; 14. Elastic rod; 15. V-shaped protrusion; 16. First chip guide sleeve; 17. Second chip guide sleeve; 18. Counterweight ball; 19. Groove track; 20. Conical notch; 21. Conical block; 22. Annular chip knife. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Reference Figures 1 to 3 The present invention provides a cable main insulation layer forming processing equipment, including: a rotating power unit 1, a transmission sleeve 2, a cutting length limiting component 3 and a power cutter head 4; the rotating power unit 1 is only a power drive component, which belongs to the common knowledge in the field and will not be described in detail, for example: a module of a battery-driven motor, a module of a wire-driven motor, or a pneumatic motor.

[0028] A transmission sleeve 2 is installed on the rotating power unit 1, and a power cutter head 4 is installed on the other end of the transmission sleeve 2. The inner cavity of the transmission sleeve 2 is provided with a cutting length limiting component which can slide and move along its length direction; when dealing with cables with different cutting lengths, the position of the cutting length limiting component on the transmission sleeve 2 is adjusted to limit the length extending into the transmission sleeve 2, thereby limiting the cutting length of the cable.

[0029] The power cutter head 4 is a cylindrical structure, and is provided with a cutting groove 5 that passes through the inside and outside. The cutting groove 5 is provided with a blade 6 whose cutting edge extends into the inside of the power cutter head 4. When dealing with cables of different diameters, it is necessary to switch power cutter heads 4 of different calibers.

[0030] Reference Figure 2 The cutting length limiting component includes a sliding groove 7, a spring bracket 8, and a top plate 9. The transmission sleeve 2 is symmetrically provided with two long strip sliding grooves 7 penetrating the cylinder wall in the axial direction, and positioning racks 10 are evenly distributed on both sides of the movable groove in the length direction; the spring bracket 8 includes a mounting seat 11 and a limiting spring 12. The circular mounting seat 11 is matched with the inner wall of the transmission sleeve 2. The mounting seat 11 is provided with a top plate 9 for limiting the length of the cable extending into the transmission sleeve 2. The mounting seat 11 is provided with two limiting springs 12 extending from the sliding grooves 7 on both sides of the transmission sleeve 2. The limiting springs 12 are annular structures and conflict with the positioning rack 10. The cross section of the contact portion of the limiting spring 12 and the positioning rack 10 is a pointed cone, and the tip of the pointed cone meshes with the positioning rack 10.

[0031] Reference Figure 1 and Figure 3For cables with different stripping lengths, you only need to pinch and press the limit spring 12 with your bare hands, slide the spring bracket 8 in the sliding groove 7 to the desired position, loosen the pressure on the limit spring 12, and then the limit spring 12 opens under the elastic action to support the positioning racks 10 on the upper and lower sides. Optionally, a scale mark matching the positioning rack 10 is set on the transmission sleeve 2, and the operator can make accurate and visual adjustments according to the scale mark. At this point, the adjustment of different stripping lengths is completed, and the tightening fit of each component can be adjusted without specific tools. The cross-section of the contact part between the limit spring 12 and the positioning rack 10 is a pointed cone, and the two are meshed with each other, further increasing the matching accuracy of the limit spring 12 and the positioning rack 10.

[0032] The top plate 9 is made of elastic material, such as spring steel, high-toughness resin, etc., which can further increase the clamping degree of the limit spring 12 on the positioning rack 10. At the same time, since the transmission sleeve 2 itself and the circular mounting seat 11 are installed with clearance fit, during the cable cutting operation, high-speed rotation will cause the transmission sleeve 2 and the circular mounting seat 11 to vibrate relative to each other, which is prone to collision, extrusion, stretching and other movements. Further, the top plate 9 is made of elastic material to eliminate the negative impact of these vibrations on the structural strength.

[0033] The end of the sliding groove 7 near the power cutter head 4 is provided with a V-shaped opening 13. Two elastic rods 14 are symmetrically provided on the end surface of one end of the power cutter head 4 entering the transmission sleeve 2. The direction of the elastic rods 14 points to one end of the transmission sleeve 2 and expands away from each other. When the power cutter head 4 is inserted into the transmission sleeve 2, the ends of the two elastic rods 14 extend outward from the sliding groove 7, and the rod body of the elastic rod 14 is provided with a V-shaped protrusion 15 that cooperates with the V-shaped opening 13. When installing the power cutter head 4, the two elastic rods 14 are pressed toward each other by hand so that they can be extended into the transmission sleeve 2 at the same time, and then the power cutter head 4 is pushed into the transmission sleeve 2 until the dead point position, at which time the ends of the two elastic rods 14 extend outward from the sliding groove 7, and the V-shaped protrusion 15 clamps the V-shaped opening 13. During the cutting process, the transmission sleeve 2 rotates under the drive of the rotating power unit 1. Due to the centrifugal effect, the elastic rods 14 will extend in the direction away from the rotation axis of the transmission sleeve 2, so that the power cutter head 4 can be tightly pulled to prevent it from leaving the transmission sleeve 2. When it is necessary to separate the fitted power cutter head 4 and the transmission sleeve 2, it is only necessary to manually press the two elastic rods 14 that are spread away from each other into the transmission sleeve 2 so that the V-shaped protrusion 15 is out of the state of being stuck in the V-shaped opening 13, and the fastening fit between the transmission sleeve 2 and the power cutter head 4 can be released.

[0034] Reference Figure 3, in some embodiments, a counterweight ball 18 is provided at the end point of the protruding end of the elastic rod 14. The counterweight ball 18 is provided with a wear-resistant coating, and a groove rail 19 matching the counterweight ball 18 is provided on the inner wall of the transmission sleeve 2. The counterweight ball 18 can further increase the force for the elastic rod 14 to pull the power cutter head 4 to press against the transmission sleeve 2. At the same time, the spherical end face of the counterweight ball 18 can reduce the pressing pressure during manual pressing. The cooperation between the counterweight ball 18 and the groove rail 19 plays a guiding role, which can further increase the accuracy of the elastic rod 14 being pushed into the transmission sleeve 2, so that the V-shaped protrusion 15 can quickly and accurately catch the V-shaped opening 13.

[0035] Referring to Figure 3 , a first chip guide sleeve 16 is provided outside the power cutter head 4. The first chip guide sleeve 16 is a pipe structure that closely adheres to the outer wall of the power cutter head 4. One end of the first chip guide sleeve 16 is open and connected to the cutting groove 5, and the other end is open and points to the transmission sleeve 2; the transmission sleeve 2 is provided with a second chip guide sleeve 17. The second chip guide sleeve 17 is a pipe structure that closely adheres to the outer wall of the transmission sleeve 2. One end of the second chip guide sleeve 17 is open and sleeved and connected with the first chip guide sleeve 16, and the other end is open and points to the sliding groove 7. A plurality of annular chip knives 22 with cutting edges perpendicular to the axis of the transmission sleeve 2 and pointing to the axis of the transmission sleeve 2 are provided on the inner walls of the first chip guide sleeve 16 and the second chip guide sleeve 17.

[0036] After the power cutter head 4 is inserted into the transmission sleeve 2, the first chip guide sleeve 16 and the second chip guide sleeve 17 form a channel connecting the cutting groove 5 and the sliding groove 7. During the cutting operation of the cable, when the long strip-shaped cutting debris of the cable comes out of the cutting groove 5, it will be guided by this channel to the sliding groove 7. During the cutting operation of the cable, the long strip-shaped cutting debris guided to the sliding groove 7 will be cut and broken into debris by the tip of the positioning rack 10. Some are thrown out from the sliding groove 7, and some remain in the sliding groove 7. This avoids the long strip-shaped cutting debris being thrown out under the action of high-speed centrifugation and hurting the user. Further, the long strip-shaped cutting debris will be pre-cut by the annular chip knife 22 during the process of being guided to the sliding groove 7, increasing the crushing effect of the tip of the positioning rack 10 on the long strip-shaped cutting debris.

[0037] Referring to Figure 1 and Figure 3 , a conical notch 20 is provided on one side of the transmission sleeve 2 close to the power cutter head 4, and a conical block 21 matching the conical notch 20 is provided on one side of the power cutter head 4 close to the transmission sleeve 2. When the power cutter head 4 is inserted into the transmission sleeve 2, the conical block 21 is embedded in the conical notch 20. After the conical block 21 is embedded in the conical notch 20, the wedge-shaped positioning makes it not easy for the power cutter head 4 and the transmission sleeve 2 to rotate relative to each other, thereby sharing the shear force borne by the elastic rod 14 and ensuring the service life of the elastic rod 14.

[0038] It should be understood that, as used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or their groups;

[0039] It should also be understood that the terminology used in the specification of the present invention is for the purpose of describing particular embodiments only and is not intended to limit the present invention; as used in the specification of the present invention and the appended claims, unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms;

[0040] It should be further understood that the term "and / or" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

Claims

1. A cable main insulation layer forming and processing device, comprising: Rotary power unit (1), transmission sleeve (2), cutting length limiting assembly (3) and power tool bit (4); The transmission sleeve (2) is mounted on the rotary power unit (1), and the power tool bit (4) is sleeved and mounted at the other end of the transmission sleeve (2). A cutting length limiting assembly capable of sliding and displacing along the length direction is arranged in the inner cavity of the transmission sleeve (2); The power tool bit (4) is of a cylindrical structure and is provided with a cutting groove (5) penetrating inside and outside. A blade (6) with a cutting edge extending into the interior of the power tool bit (4) is arranged in the cutting groove (5); It is characterized in that: it includes a sliding groove (7), a circlip bracket (8), and a top plate (9). Two long strip-shaped sliding grooves (7) penetrating the cylinder wall are symmetrically arranged axially on the transmission sleeve (2), and positioning racks (10) are evenly distributed on both sides of the length direction of the movable groove; The circlip bracket (8) includes a mounting seat (11) and a limit circlip (12). A circular mounting seat (11) with a clearance fit with the inner wall of the transmission sleeve (2). The mounting seat (11) is provided with a top plate (9) for limiting the length of the cable extending into the transmission sleeve (2). Two limit circlips (12) extending out of the two side sliding grooves (7) from inside the transmission sleeve (2) are arranged on the mounting seat (11). The limit circlip (12) is of an annular structure and abuts against the positioning rack (10).

2. The forming and processing equipment for the main insulation layer of a cable according to claim 1, wherein: A V-shaped opening (13) is arranged at the end of the sliding groove (7) close to the power tool bit (4). Two elastic rods (14) are symmetrically arranged on the end face of the end of the power tool bit (4) entering the transmission sleeve (2). The directions of the elastic rods (14) point to one end of the transmission sleeve (2) and expand away from each other. When the power tool bit (4) is sleeved into the transmission sleeve (2), the end parts of the two elastic rods (14) extending out extend out of the sliding groove (7), and a V-shaped protrusion (15) matched with the V-shaped opening (13) is arranged on the rod body of the elastic rod (14).

3. A cable main insulation layer forming and processing device according to claim 1, characterized in that: A first chip guide sleeve (16) is arranged outside the power tool bit (4). The first chip guide sleeve (16) is a pipe structure closely attached to the outer wall of the power tool bit (4). One end opening of the first chip guide sleeve (16) is connected to the cutting groove (5), and the other end opening points to the transmission sleeve (2); The transmission sleeve (2) is provided with a second chip guide sleeve (17). The second chip guide sleeve (17) is a pipe structure closely attached to the outer wall of the transmission sleeve (2). One end opening of the second chip guide sleeve (17) is sleeved and connected with the end of the first chip guide sleeve (16) pointing to the transmission sleeve (2), and the other end opening points to the sliding groove (7).

4. The forming and processing equipment for the main insulation layer of a cable according to claim 1, characterized in that: The cross section of the contact part of the limit circlip (12) and the positioning rack (10) is conical, and the tip of the conical shape meshes with the positioning rack (10).

5. A cable main insulation layer forming and processing device according to claim 2, characterized in that: A counterweight ball (18) is arranged at the end point of the extending end of the elastic rod (14). The counterweight ball (18) is provided with a wear-resistant coating, and a groove track (19) matched with the counterweight ball (18) is arranged on the inner wall of the transmission sleeve (2).

6. The shaping and processing equipment for the main insulating layer of a cable according to claim 1, characterized in that: A conical notch (20) is provided on one side of the transmission sleeve (2) close to the power tool bit (4), and a conical block (21) matching the conical notch (20) is provided on one side of the power tool bit (4) close to the transmission sleeve (2). When the power tool bit (4) is sleeved into the transmission sleeve (2), the conical block (21) is embedded in the conical notch (20).

7. A cable main insulation layer forming and processing device according to claim 1, characterized in that: The top plate (9) is made of an elastic material.

8. A cable main insulation layer forming and processing device according to claim 3, characterized in that: A plurality of annular chip knives (22) with cutting edges perpendicular to the axial direction of the transmission sleeve (2) and pointing to the axis of the transmission sleeve (2) are provided on the inner walls of the first chip guide sleeve (16) and the second chip guide sleeve (17).

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