CN113031155A

CN113031155A - Optical cable wire cutting pliers

Info

Publication number: CN113031155A
Application number: CN202110295181.5A
Authority: CN
Inventors: 王醒东; 何园园
Original assignee: Hangzhou Futong Communication Technology Co Ltd
Current assignee: Hangzhou Futong Communication Technology Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-06-25
Anticipated expiration: 2041-03-19
Also published as: CN113031155B

Abstract

The invention belongs to the field of optical cable processing equipment, and particularly relates to optical cable wire cutting pliers. It includes: the upper handle body is hinged with the front end of the lower handle body, and the front end of the lower handle body is provided with a strand hole; a handle head at the front end of the lower handle body is provided with a semi-open cavity, a guide channel is arranged between the cavity and the stranded wire hole and is communicated with the cavity and the stranded wire hole, and a wire stripping knife is arranged in the guide channel; the strand hole is also tangentially connected with a cutter outlet channel which is arranged in the direction along the guide channel; the cavity is internally provided with a transmission mechanism which is connected with the rear end of the wire stripping knife and converts the pressing action of the upper handle body into the movement of the wire stripping knife along the guide channel. The invention can be suitable for cutting the optical cable cortex of various specifications and has good applicability; the shearing depth of the optical cable sheath can be controlled at high precision; the semi-retracting cutter can be realized in the process of tearing the cortex, and the cortex is torn and peeled while the optical fiber is prevented from being damaged.

Description

Optical cable wire cutting pliers

Technical Field

The invention belongs to the field of optical cable processing equipment, and particularly relates to optical cable wire cutting pliers.

Background

Fiber optic cables are manufactured to meet optical, mechanical, or environmental performance specifications and utilize one or more optical fibers disposed in a covering jacket as the transmission medium and may be used individually or in groups as telecommunication cable assemblies. The sheath of the optical cable usually plays a very important role in protecting the inner core of the optical fiber inside the optical cable, and therefore is an essential component of the optical cable. However, in some specific situations or when there is some specific use requirement, it is necessary to shear-strip the skin of the cable. One of the common tools for cutting and stripping the cable jacket is wire cutting pliers. Compared with other regular optical cable wire cutting devices, the wire cutting pliers have the advantage of being more flexible and convenient to take.

However, at present, no special wire cutting pliers are developed for optical cables, and in the actual operation process, the wire cutting pliers are usually used for replacement, so that the wire cutting pliers also have the problem of poor cutting precision of the optical cable sheath layer compared with other optical cable cutting devices, and the problems that the optical fiber is easily damaged due to too deep cutting depth in the wire cutting process, or the optical fiber is broken due to scraping of the optical fiber by the blade part of the wire cutting pliers in the process of pulling off the sheath layer after the cutting of the optical cable sheath layer is completed, so that the optical cable is damaged, and the like are also caused.

In this regard, there is a need for an improved wire cutting pliers that is well suited for cutting optical cable sheaths and that avoids damaging the optical fibers during the tearing of the sheaths while ensuring the cutting accuracy.

Disclosure of Invention

The invention provides an optical cable wire cutting pliers, aiming at solving the problems that the existing wire cutting pliers are not suitable for cutting off the optical cable cortex, and the irreversible damage of an optical cable is easily caused in the steps of cutting and tearing the cortex in the actual use process.

The invention aims to:

firstly, the method can be suitable for cutting and stripping the optical cable skin layer;

secondly, ensuring that the process of trimming and stripping wires has higher precision;

thirdly, the damage of the optical cable can be avoided in the process of tearing the optical cable skin layer;

and fourthly, the use portability of the wire cutting pliers is improved.

In order to achieve the purpose, the invention adopts the following technical scheme.

An optical cable cutting pliers comprising:

the upper handle body is hinged with the front end of the lower handle body, and the front end of the lower handle body is provided with a strand hole;

a handle head at the front end of the lower handle body is provided with a semi-open cavity, a guide channel is arranged between the cavity and the stranded wire hole and is communicated with the cavity and the stranded wire hole, and a wire stripping knife is arranged in the guide channel;

the strand hole is also tangentially connected with a cutter outlet channel which is arranged in the direction along the guide channel;

the cavity is internally provided with a transmission mechanism which is connected with the rear end of the wire stripping knife and converts the pressing action of the upper handle body into the movement of the wire stripping knife along the guide channel.

As a preference, the first and second liquid crystal compositions are,

the front end of the wire stripping knife is a knife head, the tail end of the wire stripping knife is a knife holder, and the rear end of the knife holder is provided with a transmission screw rod;

the transmission mechanism comprises a guide screw rod sleeve sleeved on the transmission screw rod, a rotating shaft and a driving gear fixed on the outer surface of the rotating shaft, a driven gear is arranged on the guide screw rod sleeve, the upper handle body is matched with the rotating shaft in a clamping mode, the rotating shaft is connected with the inner wall of the cavity and can freely rotate around the axis of the cavity and drive the driving gear to rotate, and the driving gear is meshed with the driven gear.

As a preference, the first and second liquid crystal compositions are,

the rotating shaft is provided with a smooth surface section and a clamping section;

go up the front end of the body and be equipped with pullover and joint, pullover corresponds the plain noodles section of pivot, cup joints on the plain noodles section, and the joint corresponds the joint section of pivot, and under the circumstances that the body resets last, the joint agrees with the joint section of pivot, can lock the pivot and go up the pushing down of the body simultaneously and reset the action homoenergetic and drive the pivot rotation, and the pivot drives the driving gear and rotates.

As a preference, the first and second liquid crystal compositions are,

the blade of the cutter head is wavy and is formed by alternately spacing convex parts and concave parts, the blade width of the lowest point of the blade of the concave part is equal, and the blade width of the highest point of the blade of the convex part is increased along with the approach of the cutter seat.

As a preference, the first and second liquid crystal compositions are,

the driven gears are provided with two gears, and the tooth surfaces of the two gears are opposite;

the driven gear and the guide screw rod sleeve are in loose sleeve joint and clamping limit through matching of the annular bulge and the annular recess, and a force guide part is arranged on the driven gear facing the inner side of the guide screw rod sleeve;

the force guide part is composed of two identical hemispheroids which are connected with each other, the two hemispheroids are respectively and tangentially abutted against the inner side of the driven gear and the outer side of the guide screw rod sleeve, and the two hemispheroids can be close to or far away from each other.

As a preference, the first and second liquid crystal compositions are,

the two hemispheroids are provided with corresponding chain grooves, chain rods are arranged in the chain grooves, and the two ends of each chain rod are clamped and limited at the bottom ends of the chain grooves of the two hemispheroids respectively.

As a preference, the first and second liquid crystal compositions are,

the guide screw rod sleeve is connected with the outer wall of the guide channel through a coil spring.

The invention has the beneficial effects that:

1) the device can be suitable for cutting the optical cable skin layers of various specifications, and has good applicability;

2) the shearing depth of the optical cable sheath can be controlled at high precision;

3) the semi-retracting cutter can be realized in the process of tearing the cortex, the distance between the blade part and the optical fiber core wire in the optical cable is increased, the optical fiber is prevented from being damaged, and the blade part is ensured to abut against the optical fiber core wire so as to realize the tearing and stripping of the cortex;

4) the advantages of using and carrying the wire cutting pliers are kept.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the front end of the lower handle;

FIG. 3 is a schematic cross-sectional view of the lower handle and the upper handle;

FIG. 4 is a schematic view in the direction A-A in FIG. 3;

FIG. 5 is a schematic view of a wire stripping knife;

FIG. 6 is a schematic view of the guide channel in cooperation with a blade holder of the wire stripper;

FIG. 7 is an enlarged schematic view of the transmission;

FIG. 8 is a schematic view of the engagement between the fixing base and the guide screw rod sleeve;

FIG. 9 is a schematic side view of the spindle;

FIG. 10 is a schematic view of the front end of the upper handle body separated from the rotating shaft;

FIG. 11 is a first schematic view of the engagement of the driven gear with the guide screw sleeve;

FIG. 12 is a second schematic view of the engagement of the driven gear with the guide screw housing;

FIG. 13 is a schematic view of a driven gear guiding a guide screw sleeve in a single direction;

FIG. 14 is a schematic structural view of a force-guiding member;

FIG. 15 is a schematic diagram illustrating the operation of the present invention;

FIG. 16 is a schematic view illustrating the operation of the transmission mechanism of the present invention;

in the figure: 10. 100 lower handle body, 11 strand holes, 101 guide channel, 1011 outer wall, 102 knife outlet channel, 103 wire stripping knife, 1031 knife head, 1031a convex part, 1031b concave part, 1032 knife seat, 1033 transmission screw rod, 10331 limiting block, 12 lower anti-slip part, 20, 200 upper handle body, 21 upper anti-slip part, 30 elastic sheet, 400 transmission mechanism, 401 guide screw rod sleeve, 4011 clamping groove, 4012 annular recess, 402 fixing seat, 4021 clamping protrusion, 403 driven gear, 4031 annular protrusion, 4032 annular cavity, 4033 annular wall, driving gear, 405 rotating shaft, 406 guide member, 4061 hemispherical body, 4062 chain groove, 4063 chain rod and 407 coil spring.

The specific implementation mode is as follows:

the invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to implement the invention based on these teachings. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.

Examples

An optical cable cutting pliers as shown in fig. 1 specifically comprises:

the front end of the lower handle body 10 is provided with a strand hole 11 for an optical cable to pass through and realize safe cutting and removal of an outer sheath of the optical cable;

the upper handle body 20 is provided with an upper anti-slip part 21, the lower handle body 10 is provided with a lower anti-slip part 12, the upper anti-slip part 21 and the lower anti-slip part 12 are arranged to improve the operation holding stability of a user, a pair of elastic sheets 30 are arranged on the inner sides of the upper handle body 20 opposite to the lower handle body 10, and the elastic sheets 30 can enable the upper handle body 20 to realize active reset after being pressed;

the lower handle body 10 is used as a main body, a handle head part at the front end of the lower handle body 100 is provided with a cavity which is open backwards and semi-open as shown in fig. 2 and 3, a guide channel 101 as shown in fig. 6 is arranged between the cavity and the stranded wire hole 11, one end of the guide channel 101 is communicated with the cavity, the other end of the guide channel is communicated with the stranded wire hole 11 in a tangential direction, a wire stripping knife 103 is arranged in the guide channel 101, the front end of the wire stripping knife 103 is a knife head 1031, the tail end of the wire stripping knife is a knife holder 1032, the knife holder 1032 is matched with the guide channel 101, as shown in fig. 5, the knife edge of the knife head 1031 is in a wave shape and consists of convex 1031a and concave 1031b which are alternately spaced, the knife edge width of the lowest point of the concave 1031b is equal, the knife edge width of the knife edge of the convex 1031a is gradually increased from the front end to the rear end, and the adjacent convex 1031a and concave 1031, the requirement for adjusting the stripping depth is met, and meanwhile, the concave part 1031b is adjusted to support the cable sheath layer after cutting is finished, so that the cable sheath layer can be pulled off, the cable core damage caused by the fact that the blade part is excessively close to the cable core part of the optical cable in the process of pulling off the cable sheath layer is avoided, and the good stripping effect and the protection effect on the cable core inside the optical cable are achieved;

the knife head 1031 of the wire stripping knife 103 faces the wire twisting hole 11, the initial position of the tip part is located in the wire twisting hole 11, the wire twisting hole 11 is further tangentially connected with a knife outlet channel 102, the knife outlet channel 102 is arranged in the length direction of the guide channel 101, one end of the knife outlet channel 102 is tangentially communicated with the wire twisting hole 11, the other end of the knife outlet channel is communicated with the end part of the most front end of the lower handle body 100 as shown in fig. 4, the knife outlet channel 102 is used for enabling the knife tip to be smoothly transported out from the front end of the lower handle body 100 when the wire stripping knife 103 moves forwards along the guide channel 101, and the volume of the whole lower handle body 100 can be reduced by adopting an open channel to be matched;

a transmission screw 1033 is further arranged at the rear end of the tool holder 1032 of the wire stripping tool 103, the axial direction of the transmission screw 1033 is parallel to the guiding direction of the guiding channel 101, a transmission mechanism 400 is correspondingly arranged in the cavity, and the transmission mechanism 400 is used for converting the downward pressing and resetting actions of the upper handle body 200 into power to drive the transmission screw 1033 to move along the axial direction, so as to drive the wire stripping tool 103 to move forwards along the guiding channel 101, thereby realizing the feeding operation;

as shown in fig. 7, the transmission mechanism 400 includes a guide screw rod sleeve 401 sleeved on the transmission screw 1033, the guide screw rod sleeve 401 is provided with a fixing seat 402 for limiting and fixing the guide screw rod sleeve 401, the fixing seat 402 is matched with the guide screw rod sleeve 401 through a clamping protrusion 4021 and a clamping groove 4011 as shown in fig. 8, so that the guide screw rod sleeve 401 can rotate around the axis of the guide screw rod sleeve 401, and the fixing seat 402 is fixedly connected with the inner wall of the cavity of the lower handle body 100;

the tail end of the transmission screw 1033 is provided with a limit block 10331, and the limit block 10331 can prevent the transmission screw 1033 from being separated from the guide screw sleeve 401;

the guide screw rod sleeve 401 is provided with a driven gear 403, the driven gear 403 is a bevel gear, corresponding to the driven gear 403 on the guide screw rod sleeve 401, the transmission mechanism 400 further comprises a driving gear 404, the driving gear 404 is also a bevel gear, the driving gear 404 is fixedly arranged on the outer surface of a rotating shaft 405, the rotating shaft 405 is shown in figure 9, and is coaxially provided with at least one section of smooth surface section and at least one section of clamping section, the embodiment comprises two sections of smooth surface sections and a clamping section arranged between the two sections of smooth surface sections, the integral rotating shaft 405 is connected with the inner wall of the cavity, the rotating shaft 405 can freely rotate around the axis thereof and drives the driving gear 404 to rotate, the front end of the upper handle body 200 is sleeved on the smooth surface sections and is in conditional clamping with the clamping section, as shown in figure 10, the front end of the upper handle body 200 is respectively provided with a sleeve head and a clamping head which are parallel, the sleeve head is sleeved on the smooth surface sections of the, the upper handle body 200 can freely rotate around the rotating shaft 405, the clamping joint corresponds to the clamping section of the rotating shaft 405, under the condition that the upper handle body 20 is reset, the clamping joint is matched and clamped with the clamping section of the rotating shaft 405, the rotating shaft 405 can be locked, meanwhile, the rotating shaft 405 can be driven to rotate by the downward pressing and resetting actions of the upper handle body 20, the rotating shaft 405 drives the driving gear 404 to rotate, the driving gear 404 is meshed with the driven gear 403, the guide screw rod sleeve 401 is driven to rotate, the transmission screw rod 1033 is driven to rotate to realize the feed operation, and after the upper handle body 20 is pulled outwards, the clamping joint can be conveniently separated from the clamping section of the rotating shaft 405, the locking on the rotating shaft 405 is released, and the rotating shaft 405 can freely rotate;

however, in the conventional structure, since the upper handle body 20 performs downward pressing and resetting in equal ratio, if the driven gear 403 on the guide screw rod sleeve 401 and the guide screw rod sleeve 401 are fixedly connected, the transmission screw rod 1033 with a larger screw pitch needs to be matched, and the cutter can be quickly discharged in the pressing process and quickly retracted in the resetting process of the upper handle body 20;

although the existence of the recess 1031b of the wire stripping knife 103 has higher use stability compared with the existing wire stripper and can realize the effect of preventing the blade part from damaging the cable core of the optical cable, certain operation hidden trouble still exists, so that the connection mode of the guide screw rod sleeve 401 and the driven gear 403 needs to be further improved;

two driven gears 403 with opposite tooth surfaces are arranged on the guide screw rod sleeve 401, as shown in fig. 11 and 12, the driven gears 403 and the guide screw rod sleeve 401 are matched through an annular protrusion 4031 and an annular recess 4012 to realize clamping limit of the driven gears 403, and the driven gears 403 and the guide screw rod sleeve 401 adopt a loose sleeve mode, so that the part of the annular protrusion 4031 and the part of the annular recess 4012 cannot transmit steering force, the steering force is transmitted through the guide member 406, the effect of bidirectional rotation and unidirectional force transmission of the driven gears 403 is realized, the two driven gears 403 can only drive the guide screw rod sleeve 401 to realize unidirectional rotation and single feed transmission is realized, the guide member 406 is arranged in an annular cavity 4032 of the driven gears, an annular wall 4033 is arranged outside the annular cavity 4032, and the annular wall 4033 can avoid the guide member 406 from being separated from the annular cavity 4032, and ensure the stability of the guide member 406;

the force guide member 406 is composed of two identical and interconnected hemispheroids 4061, the two hemispheroids 4061 can be close to or separated from each other, as shown in fig. 11, when the external gear rotates clockwise, the two hemispheroids 4061 are separated from each other, the force guide member 406 cannot be in close contact with the driven gear 403 and the guide screw rod sleeve 401 at the same time, so that the driven gear 403 rotates clockwise to be idle, the guide screw rod sleeve 401 cannot be driven to rotate, when the driven gear 403 rotates counterclockwise, the hemispheroids 4061 of the force guide member 406 are pressed against each other, and simultaneously the driven gear 403 and the guide screw rod sleeve 401 are in close contact with each other, so that the rotation locking of the driven gear 403 and the guide screw rod sleeve 401 is realized, the transmission of steering force is formed, and the driven gear 403 can drive the guide screw rod sleeve 401 to rotate;

in the above structure, the two driven gears 403 rotate and lock in the same direction, for example, the tooth surface angle of the driven gear 403 is overlooked, as shown in fig. 13, the driven gear 403 on the right side rotates clockwise to lock the guide screw rod sleeve 401 along the direction s1 to drive the guide screw rod sleeve 401 to rotate, the driven gear 403 on the left side rotates counterclockwise to lock the guide screw rod sleeve 401 along the direction s2 to drive the guide screw rod sleeve 401 to rotate, the practical technical effect is that no matter how the two driven gears 403 rotate, the guide screw rod sleeve 401 can only be driven to rotate along the direction s1/s2 to realize the single feed operation, in addition, the guide screw rod sleeve 401 is connected with the outer wall 1011 of the guide channel 101 through the coil spring 407, and the coil spring 407 can drive the guide screw rod sleeve 401 and the rotating shaft 405 to reset after the upper handle 200 releases the locking of the rotating shaft 405;

as shown in fig. 14, the two hemispheroids 4061 are provided with corresponding chain grooves 4062, a chain rod 4063 is arranged in the chain groove 4062, the two ends of the chain rod 4063 are respectively clamped and limited at the bottom ends of the chain grooves 4062 of the two hemispheroids 4061, the chain rod 4063 can slide in the chain groove 4062 and does not separate from the chain groove 4062, the two hemispheroids 4061 can slide relatively but do not separate due to the structural arrangement, and the guide piece has excellent structural stability and can achieve the technical effect required by the guide piece 406.

In particular, the method comprises the following steps of,

as shown in fig. 15 and 16, when the upper handle body 20 is pressed down along the direction a, the upper handle body 20 drives the rotating shaft 405 and the driving gear 404 fixed on the rotating shaft 405 to rotate along the direction z2, wherein the driven gear 403 and the guide screw sleeve 401 on one side (e.g. the right side in fig. 16) rotate along the direction x1, the driving screw 1033 moves along the direction d, the wire stripping knife 103 is driven to move forward along the guide channel 101, thereby implementing the feeding operation, when the upper handle body 20 is reset along the direction b, the upper handle body 20 drives the rotating shaft 405 and the driving gear 404 fixed on the rotating shaft 405 to rotate along the direction z1, the driven gear and the guide screw sleeve 401 on the left side in fig. 16 are driven to rotate along the direction x2, the driving screw 1033 moves along the direction d, the wire stripping knife 403 is driven to move forward along the guide channel 101, thereby implementing the feeding operation of both pressing and resetting of the upper handle body 20, the screw 1033 is reduced in, the feed distance of the wire stripping knife 103 can be controlled more accurately, the cutting depth of the optical cable sheath layer can be regulated more accurately, and the optical cable sheath layer can be further supported by the aid of the concave part 1031b of the wire stripping knife 103 after the sheath layer is cut, so that the optical cable sheath layer can be stripped and pulled out;

after the wire stripping operation is completed, the upper handle body 20 is pulled outwards along the direction c in fig. 15, so that the locking of the upper handle body 20 on the rotating shaft 405 is released, the guide screw rod sleeve 401 rotates along the direction x2 under the action of the coil spring 407, the transmission screw rod 1033 is driven to move along the direction e, and the knife retracting operation is quickly realized.

The whole operation is simple and convenient, the problem that the cable core of the optical cable is easily damaged under the same condition of cutting and stripping process cutting edge depth can be effectively avoided, the precision control degree of the cutting depth is high, and the stripping knife 103 is convenient and rapid to recover.

Claims

1. An optical cable cutting pliers, comprising:

2. An optical cable cutting pliers according to claim 1,

3. An optical cable cutting pliers according to claim 2,

4. An optical cable cutting pliers according to claim 2,

5. An optical cable cutting pliers according to claim 2,

6. An optical cable cutting pliers according to claim 4,

7. An optical cable cutting pliers according to claim 4 or 5,