CN110646705A - Auxiliary wire stripping detection device - Google Patents
Auxiliary wire stripping detection device Download PDFInfo
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- CN110646705A CN110646705A CN201910846766.4A CN201910846766A CN110646705A CN 110646705 A CN110646705 A CN 110646705A CN 201910846766 A CN201910846766 A CN 201910846766A CN 110646705 A CN110646705 A CN 110646705A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
- H02G1/1265—Machines the cutting element rotating about the wire or cable
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
- H02G1/1268—Machines the cutting element making a longitudinal in combination with a transverse or a helical cut
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
The invention relates to a wire stripping auxiliary detection device, which comprises an actuating mechanism and a transmission mechanism, wherein the actuating mechanism is arranged on the wire stripping auxiliary detection device; the actuating mechanism mainly comprises a first cutting piece, a first moving piece, a second moving piece and a second cutting piece; the transmission mechanism mainly comprises an arc-shaped pipe, a straight pipe, a plurality of balls, a spring and a motor; the first cutting part, the first moving part, the arc-shaped pipe, the second moving part and the second cutting part are sequentially connected to form a wire ring, the first moving part and the second moving part are respectively inserted into two ends of the arc-shaped pipe and can slide relative to the arc-shaped pipe, the arc-shaped pipe is communicated with the straight pipe to form a Y-shaped pipe, a plurality of balls are distributed in the Y-shaped pipe, and the spring is installed in the straight pipe, is positioned below the balls and is simultaneously connected with the motor; the actuating mechanism and the transmission mechanism are mutually matched to form a structure which can control the relaxation of the spring through the motor to drive the ball to move, further drive the two moving parts to stretch and finally drive the two cutting parts to be mutually attached and overlapped or separated. The auxiliary wire stripping detection device is simple in structure and convenient to use.
Description
Technical Field
The invention belongs to the technical field of power equipment, and relates to a wire stripping auxiliary detection device.
Background
A long line is often composed of a plurality of very thin lines, and local faults of a section of line, such as burning of part of the line, and fusing of part of the line, can affect the overall working performance of the line.
As shown in fig. 1, on a common harness, the outer leather covers the inner harness, which is made up of more finer harnesses, when current passes through it in an abnormal manner, two common conditions occur: one is scorching phenomenon shown by the A-A section, and the other is fusing phenomenon shown by the B-B section. In order to detect what faults are specific to the line, the line needs to be partially cut open to perform various troubleshooting. However, the prior art lacks a wire stripping auxiliary detection device, generally carries out wire maintenance through manual wire stripping, and has the defects of time consumption, labor waste, high risk coefficient and the like.
Therefore, the research on the auxiliary wire stripping detection device has very important significance.
Disclosure of Invention
The invention aims to solve the problems that time and labor are consumed for wire maintenance, the personal safety is affected due to high danger coefficient and the like in the prior art, and provides an auxiliary wire stripping detection device. The auxiliary wire stripping detection device can meet the detection operation of high-altitude operators and reduce the danger coefficient of manual actions; meanwhile, the working efficiency can be automatically or semi-automatically improved in an electric control mode under the working condition of low-altitude operation.
In order to achieve the purpose, the invention adopts the following scheme:
the auxiliary wire stripping detection device comprises an execution mechanism and a transmission mechanism;
the executing mechanism mainly comprises a first cutting part, a first moving part, a second moving part and a second cutting part, wherein each part is of an arc-shaped columnar structure, and the shape is set to ensure that each subsequent part and the arc-shaped pipe can be connected into a ring;
the transmission mechanism mainly comprises an arc-shaped pipe, a straight pipe, a plurality of balls (the balls with certain rigidity can be applied to the invention, such as steel balls, alloy balls and the like), a spring and a motor;
the device comprises a first cutting part, a first moving part, an arc-shaped pipe, a second moving part and a second cutting part which are sequentially connected to form a wire ring, wherein the first moving part and the second moving part are respectively inserted into two ends of the arc-shaped pipe and can slide relative to the arc-shaped pipe;
actuating mechanism and drive mechanism mutually support, form the relaxation of accessible motor control spring and drive the ball motion, and then drive two motion pieces and stretch out or retract from the arc intraductal, finally drive the structure that two cutting pieces laminated each other and overlap or separate, wherein two cutting pieces surface perpendicular to of laminating each other the center pin of wire loop to guarantee to form the shearing force, pleasing to the eye moreover, when parallel cutting piece accomplishes clamping function, the ball transmission makes the meshing ring diminish, and the alternately extrusion appears in the edge of a knife, and the repeated action makes the shearing force play a role, helps cutting the pencil layer.
The auxiliary wire stripping detection device is characterized by novelty of structure and flexibility of movement, the connection between the first cutting part and the first moving part, the connection between the second cutting part and the second moving part, the connection between the first moving part and the second moving part and the arc-shaped pipe and the whole symmetrical structure relate to the knowledge of friction lubrication and the efficiency problem of transmission sensitivity, and the invention realizes the bridging of the ball and the first moving part and the second moving part to transmit power through innovative design.
As a preferable scheme:
according to the wire stripping auxiliary detection device, the end part of the first cutting piece far away from the first moving piece and the end part of the second cutting piece far away from the second moving piece are provided with the auxiliary cutting pieces, and the auxiliary cutting pieces are used for axially cutting the wire harness sheaf when the wire ring axially moves along the wire harness sheaf.
When the wire stripping auxiliary detection device does not contain an auxiliary cutting piece, the wire stripping auxiliary detection device can only cut along the radial direction of the wire harness sheaf; when the wire stripping auxiliary detection device contains the auxiliary cutting piece, the wire stripping auxiliary detection device can be used for cutting along the radial direction of the wire harness sheaf and also can be used for cutting along the axial direction of the wire harness sheaf, and one skin of the wire harness sheaf can be stripped;
the auxiliary wire stripping detection device can be a non-automatic wire stripping auxiliary detection device, and can also be matched with a control mechanism to form an automatic wire stripping auxiliary detection device, the control mechanism mainly comprises a central control unit, a mechanical arm, a pressure sensor and a can bus, and the central control unit comprises a controller, an arithmetic unit and a memory which are connected with each other;
the control process is as follows: the pressure sensor is arranged at the position of or close to the joint of the adjacent cutting member and the moving member, namely the pressure sensor is arranged at the position of or close to the joint of the first cutting member and the first moving member, or the pressure sensor is arranged at the position of or close to the joint of the second cutting member and the second moving member, the pressure sensor detects an electric signal generated by the shearing pressure of the first cutting member or the second cutting member and sends the electric signal to the can bus, the can bus sends the electric signal to the controller of the central control unit, the controller comprises a voltage amplifier and a power amplifier (the electric signal passes through the primary action of the voltage amplifier and the secondary action of the power amplifier in sequence), the controller amplifies the electric signal and sends the electric signal to the arithmetic unit through the can bus, the memory is used for storing a threshold value I and a threshold value II (the threshold value I and the threshold value II are determined according to experience, the threshold value I is obtained by bundling a plurality of different sheaves, acquiring the value of an electric signal detected by the pressure sensor after the electric signal is amplified by the controller when the wire loop just contacts the wire harness sheaf, and calculating the average value to obtain the value; threshold value II is through tying a bundle to a plurality of different pencil, gather when the wire loop just contacts the wire that the pencil was tied a bundle the inside the electric signal that pressure sensor detected behind the numerical value after the controller enlargies, calculate the average value and obtain) and send the arithmetic ware through can bus, the arithmetic ware is compared the electric signal with threshold value I and threshold value II after with the comparison result and is sent the comparison result to can bus, can bus sends different instructions to motor and arm according to the comparison result, specifically is: when the electric signal is smaller than the threshold I (namely the working condition is not ready and the preparation is not stopped), no command is sent; when the electrical signal is greater than or equal to a threshold value I and less than a threshold value II (i.e., when the wire loop grips the bundle of wires but does not contact the wires inside the bundle of wires), sending a start transmission power command to the motor (for the purpose of driving the actuator to cut the skin of the bundle of wires); when the electric signal is larger than or equal to the threshold value II (namely the wire loop cuts the wire harness bundle and contacts with a wire inside the wire harness bundle), sending a power transmission stopping instruction to the motor (aiming at loosening the wire loop to ensure that a certain gap is reserved between the wire loop and the wire harness bundle so as to facilitate axial movement and radial rotation) and an axial movement instruction to the mechanical arm to perform next shearing movement; the motor transmits power to the spring in a pulse mode after receiving a power transmission starting command, and stops transmitting power after receiving a power transmission stopping command; after receiving the axial movement instruction, the mechanical arm pushes the wire ring to move axially along the wire harness bundle; when the axial movement of the mechanical arm reaches the rated size (the rated size requirement is divided into two working conditions, the first one is simple in structure and is autonomously controlled according to the requirements of constructors, the second one is complex in structure and has a preset selection range, an algorithm can be set, the axial movement size is changed within a range, for example, a wire with the diameter of x, a wire with the diameter of y, a wire with the axial distance of 15cm and the diameter of z corresponds to the two working conditions of 20 cm. according to the position of the wire), a rotating movement instruction is sent to the mechanical arm by the can bus, and the mechanical arm pushes the wire ring to rotate after receiving the rotating movement instruction.
According to the auxiliary wire stripping detection device, the first cutting piece and the second cutting piece are of solid arc-shaped columnar structures; the first moving piece and the second moving piece are hollow arc-shaped columnar structures.
In the auxiliary wire stripping detection device, the sections of the first cutting piece and the second cutting piece are right trapezoid, the upper bottom and the lower bottom of the right trapezoid are perpendicular to the central axis of the wire loop, the lower bottom is positioned on the surface where the two cutting pieces are attached to each other, the straight waist of the right trapezoid is positioned on the inner side of the wire loop, the oblique waist is positioned on the outer side of the wire loop, and the straight waist is parallel to the central axis of the wire loop.
According to the auxiliary wire stripping detection device, the first cutting piece is inserted into the first moving piece and is fixedly connected with the first moving piece (the fixed connection adopts a bolt connection mode); the second cutting member is inserted into the second moving member and is fixedly connected with the second moving member (the fixed connection adopts a bolt connection mode).
According to the auxiliary wire stripping detection device, the first moving part and the second moving part are formed by connecting four side plates, and the section of the first moving part is rectangular; the side plate a and the side plate b of the first moving part are opposite and perpendicular to the central axis of the wire ring; the side plate c and the side plate d of the second moving part are opposite and perpendicular to the central axis of the wire ring; the side plate a of the first moving piece and the side plate c of the second moving piece are coplanar, and the side plate b of the first moving piece and the side plate d of the second moving piece are coplanar; the first cutting piece is attached to the side plate a of the first moving piece, and the second cutting piece is attached to the side plate d of the second moving piece, or the first cutting piece is attached to the side plate b of the first moving piece, and the second cutting piece is attached to the side plate c of the second moving piece.
In the auxiliary wire stripping detection device, the surface of the first cutting piece, which is attached to the side plate of the first moving piece, is a surface v, the surface of the second cutting piece, which is attached to the side plate of the second moving piece, is a surface w, the auxiliary cutting piece is a triangular pyramid or a triangular prism, and the bottom surface of the triangular pyramid or the rectangular side surface of the triangular prism is attached to the surface v of the first cutting piece and the surface w of the second cutting piece.
According to the auxiliary wire stripping detection device, the section of the arc-shaped pipe is rectangular, the arc-shaped pipe is of a composite layer structure, the inner layer is made of steel, and the outer layer is made of plastic materials.
According to the auxiliary wire stripping detection device, the first moving part and the second moving part are connected with the arc-shaped pipe in an interference fit mode through the positioning pins. The positioning pin is connected with the moving part and the arc-shaped pipe and is fixed only by one of external structures, the positioning pin penetrates through the metal material of the arc-shaped pipe, and a long and thin through hole is formed in the high-density area to ensure that the positioning pin is not deformed; the arc-shaped pipe is an alloy whole formed by up-down attaching, and has good fixing function due to gravity, the same material property and other factors.
According to the auxiliary wire stripping detection device, the straight pipe is perpendicularly connected with the surface m of the cubic base, the surface n of the cubic base is parallel to the surface m, the surface n is recessed towards the surface m to form a rectangular groove, the motor is installed in the rectangular groove (the auxiliary automatic wire stripping detection device further comprises a plurality of fixing plates, the fixing plates are right-angled triangular plates, the thickness surfaces where two straight edges of the fixing plates are located are respectively connected with the surface m and the straight pipe), and when the auxiliary wire stripping detection device is an auxiliary automatic wire stripping detection device, the central control unit can also be installed in the rectangular groove.
Has the advantages that:
(1) the auxiliary wire stripping detection device is simple in structure, low in cost and convenient to use;
(2) the auxiliary wire stripping detection device can locally cut a faulty line through automatic wire stripping operation, so that the fault problem is researched, and the auxiliary wire stripping detection device has high practical value.
Drawings
Fig. 1 is a schematic structural view of a prior art harness sheaf;
fig. 2 is a schematic overall structure diagram of an automatic wire stripping auxiliary detection device according to an embodiment of the present invention (in the figure, the overall structure diagram is shown in the figure)
Representing the central axis of the wire loop);
fig. 3 to 5 are a front view, a left view and a top view of the auxiliary automatic wire stripping detection device according to the embodiment of the invention;
FIG. 6 is an enlarged view of a portion of FIG. 3 (shown therein)
Representing the central axis of the wire loop);
FIG. 7 is a schematic view of a first cutting member;
FIG. 8 is a schematic cross-sectional view C-C of the first cutting member of FIG. 7;
FIG. 9 is a schematic structural view of a first motion member;
FIG. 10 is a schematic cross-sectional view taken along line D-D of the first mover of FIG. 9;
FIG. 11 is a schematic view of a curved tube;
fig. 12 to 13 are schematic structural diagrams of the automatic wire stripping auxiliary detection device according to the embodiment of the invention in different working states;
FIG. 14 is a schematic view of the control mechanism;
fig. 15 is a schematic shear view.
The device comprises a controller 1, a motor 2, an arithmetic unit 3, a first cutting part 4, a first moving part 5, an arc-shaped pipe 6, a second moving part 7, a second cutting part 8, a straight pipe 9, a ball 10, a spring 11 and an auxiliary cutting part 12.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
The auxiliary wire stripping detection device comprises an execution mechanism and a transmission mechanism;
the executing mechanism mainly comprises a first cutting part 4 (shown in figures 7-8), a first moving part 5 (shown in figures 9-10), a second moving part 7 and a second cutting part 8, wherein each part is of an arc-shaped columnar structure; the transmission mechanism mainly comprises an arc-shaped pipe 6 (shown in figure 11), a straight pipe 9, a plurality of balls 10, a spring 11 and a motor 2;
the first cutting part 4, the first moving part 5, the arc-shaped pipe 6, the second moving part 7 and the second cutting part 8 are sequentially connected into a wire ring, the first moving part 5 and the second moving part 7 are respectively inserted into two ends of the arc-shaped pipe 6, are connected with the arc-shaped pipe 6 in an interference fit manner through positioning pins, and can slide relative to the arc-shaped pipe 6;
the first moving part 5 and the second moving part 7 are hollow arc-shaped columnar structures which are formed by connecting four side plates, and the sections of the first moving part and the second moving part are rectangular; the side plate a and the side plate b of the first moving member 5 are opposite and perpendicular to the central axis of the wire loop; the side plate c and the side plate d of the second moving member 7 are opposite and perpendicular to the central axis of the wire loop; the side plate a of the first moving member 5 and the side plate c of the second moving member 7 are coplanar, and the side plate b of the first moving member 5 and the side plate d of the second moving member 7 are coplanar;
the first cutting piece 4 and the second cutting piece 8 are solid arc-shaped columnar structures, the sections of the first cutting piece and the second cutting piece are right-angled trapezoids, the upper bottom and the lower bottom of each right-angled trapezium are perpendicular to the central axis of the wire loop, the lower bottom of each right-angled trapezium is positioned on the surface where the two cutting pieces are attached to each other, the straight waist of each right-angled trapezium is positioned on the inner side of the wire loop, the oblique waist of each right-angled trapezium is positioned on the outer side of the wire loop;
the first cutting member 4 is inserted into the first moving member 5 and fixedly connected therewith; the second cutting member 8 is inserted into the second moving member 7 and fixedly connected therewith; the face v of the first cutting piece 4 is attached to the side plate a of the first moving piece 5, the face w of the second cutting piece 8 is attached to the side plate d of the second moving piece 7, the end, away from the first moving piece 5, of the first cutting piece 4 and the end, away from the second moving piece 7, of the second cutting piece 8 are provided with a triangular prism-shaped auxiliary cutting piece 12, the rectangular side face of the triangular prism is attached to the face v of the first cutting piece 4 and the face w of the second cutting piece 8, and the auxiliary cutting piece 12 is used for axially cutting the bundle when the wire loop moves axially along the bundle;
the section of the arc-shaped pipe 6 is rectangular, and the arc-shaped pipe is provided with a composite layer structure with an inner layer made of steel and an outer layer made of plastic material;
the arc-shaped tube 6 is communicated with the straight tube 9 to form a Y-shaped tube, the Y-shaped tube is formed by connecting an arc line and a straight line, a plurality of balls 10 are distributed in the Y-shaped tube, and the spring 11 is arranged in the straight tube 9, is positioned below the balls 10 and is connected with the motor 2;
the straight tube 9 is vertically connected with a face m of a cubic base, a face n of the cubic base is parallel to the face m, the face n is sunken towards the face m to form a rectangular groove, and the motor 2 is installed in the rectangular groove.
The actuating mechanism and the transmission mechanism are mutually matched to form a structure which can control the spring 11 to relax through the motor 2 to drive the ball 10 to move, further drive the two moving parts to extend out or retract from the arc-shaped pipe, and finally drive the two cutting parts to be mutually attached and overlapped or separated, wherein the surfaces of the two cutting parts which are mutually attached are vertical to the central shaft of the wire loop.
The auxiliary wire stripping detection device can be a non-automatic wire stripping auxiliary detection device, and can also be matched with a control mechanism to form an automatic wire stripping auxiliary detection device, as shown in fig. 2-6; when the device is an auxiliary detection device for automatic wire stripping, the device comprises the auxiliary detection device for automatic wire stripping and a control mechanism, different working states of the auxiliary detection device for automatic wire stripping are shown in fig. 12-13, as shown in fig. 14, the control mechanism mainly comprises a central control unit, a mechanical arm, a pressure sensor and a can bus, the central control unit comprises a controller 1, an arithmetic unit 3 and a memory which are connected with each other, and the central control unit is arranged in the rectangular groove.
The control process is as follows: the pressure sensor is arranged at the position of the joint or close to the joint of the adjacent cutting piece and the moving piece, namely the pressure sensor is arranged at the position of the joint or close to the joint of the first cutting piece 4 and the first moving piece 5 or at the position of the joint or close to the joint of the second cutting piece 8 and the second moving piece 7, the pressure sensor detects an electric signal generated by the shearing pressure of the first cutting piece 4 or the second cutting piece 8 and sends the electric signal to the can bus, the can bus sends the electric signal to the controller 1 of the central control unit, the controller 1 comprises a voltage amplifier and a power amplifier (the electric signal sequentially passes through the primary action of the voltage amplifier and the secondary action of the power amplifier), the controller 1 sends the electric signal to the arithmetic unit 3 after amplifying the electric signal through the can bus, the memory is used for storing a threshold I and a threshold II (the threshold I and the threshold II are determined according to experience, the threshold value I is obtained by calculating the average value of the electrical signals detected by the pressure sensor when the wire loop is just in contact with a bundle, after the electrical signals are amplified by the controller 1 for a plurality of different bundles; threshold value II is through to a plurality of different pencil sheaves, gather when the wire loop just contacts the wire that the pencil sheaf the inside the electric signal that pressure sensor detected behind controller 1 enlargies, calculate the numerical value of mean value and obtain) and send to arithmetic unit 3 through can bus, arithmetic unit 3 sends the comparison result to can bus after comparing electric signal with threshold value I and threshold value II, can bus sends different instructions to motor 2 and arm according to the comparison result, specifically does: when the electric signal is smaller than the threshold I (namely the working condition is not ready and the preparation is not stopped), no command is sent; when the electrical signal is equal to or greater than the threshold value I and less than the threshold value II (i.e., when the wire loop grips the bundle of wires but does not contact the wires inside the bundle of wires), sending a start transmission power command to the motor 2 (for the purpose of driving the actuator to cut the skin of the bundle of wires); when the electric signal is greater than or equal to the threshold value II (namely, the wire loop cuts the wire harness bundle and contacts with the conducting wire in the wire harness bundle), sending a power transmission stopping instruction to the motor 2 (aiming at loosening the wire loop to ensure that a certain gap is reserved between the wire loop and the wire harness bundle so as to facilitate axial movement and radial rotation) and an axial movement instruction to the mechanical arm to perform next shearing movement; the motor 2 transmits power to the spring 11 in a pulse form after receiving a power transmission starting command, and stops transmitting power after receiving a power transmission stopping command; after receiving the axial movement instruction, the mechanical arm pushes the wire ring to move axially along the wire harness bundle; when the axial movement of the mechanical arm reaches the rated size (the rated size requirement is divided into two working conditions, the first one is simple in structure and is autonomously controlled according to the requirements of constructors, the second one is complex in structure and has a preset selection range, an algorithm can be set, the axial movement size is changed within a range, for example, a wire with the diameter of x, a wire with the diameter of y, a wire with the axial distance of 15cm and the diameter of z corresponds to the two working conditions of 20 cm. according to the position of the wire), a rotating movement instruction is sent to the mechanical arm by the can bus, and the mechanical arm pushes the wire ring to rotate after receiving the rotating movement instruction.
Adopt foretell automatic wire stripping to assist detection device, the concrete process of its shearing is:
(1) shearing with one radial movement: as shown in fig. 15, when the bundle of wires begins to cut, the knife edge will produce a cross-shaped nick on the surface of the wire, which indicates that the contact stress reaches a threshold I, the cutting motion begins, the arc length corresponding to each step of the cutting motion is L (assuming that the arc length of the cutting is pi/6 rad, the step can be pi/30 rad, the arc length refers to the radial cutting length, and the step refers to the distance of each cutting motion of the wire stripping device), the knife edge advances upward along the radial direction (i.e. parallel to the direction of arrow v) by L/2 to reach a cutting motion position P1, when the knife contacts the steel wire material of the wire, the contact stress reaches a threshold II, at which the wire loop is loosened so that there is a gap between the knife and the wire, the contact stress is reduced to nearly zero, by slightly turning the wire loop (when viewed from left to right, the direction of the turning is clockwise, the purpose of the rotation is to collect the piezoelectric signal, compare it with threshold I and threshold II, so as to achieve effective shearing), the contact stress will gradually reach threshold I, then shear a L downwards (i.e. parallel to the direction of arrow w), reach shearing position P2, at this time loosen the wire loop, so that there is a gap between the tool and the wire, the contact stress will be reduced to near zero, by slightly rotating the wire loop (since the shearing is step-by-step, it can not be completed by several steps, and, the wire skin has a certain density, it needs a small step repeated incremental movement to achieve the shearing goal, as seen from left to right, the direction of rotation is clockwise), the extrusion stress will gradually reach threshold I, the knife edge will then advance upwards (i.e. parallel to the direction of arrow v) by L/2 in the radial direction of the wire, so cycling, an arc length will be cut in the radial direction of the wire (the arc length is equivalent to the arc length of the cross at both ends, arc length (L/2) × n, i.e.: arc length equal to n times half step length);
(2) shear with one reverse axial movement: after completing the shearing of a radial movement, a tangent line with a cross at both ends is formed, as shown in fig. 15, and then the axial movement is performed to the target distance, the next shearing starts with shearing a half step L/2 (with the end point P3) downwards (i.e. parallel to the direction of the arrow w), then shearing a step L (with the end point P4) upwards (i.e. parallel to the direction of the arrow v), and the cycle is repeated, so that the shearing work of symmetrical arc segments is completed, and finally, the reverse axial movement and the initial shearing position form a closed loop.
Claims (10)
1. Detection device is assisted to wire stripping, characterized by: comprises an actuating mechanism and a transmission mechanism;
the actuating mechanism mainly comprises a first cutting piece, a first moving piece, a second moving piece and a second cutting piece, and each piece is of an arc-shaped columnar structure;
the transmission mechanism mainly comprises an arc-shaped pipe, a straight pipe, a plurality of balls, a spring and a motor;
the device comprises a first cutting part, a first moving part, an arc-shaped pipe, a second moving part and a second cutting part which are sequentially connected to form a wire ring, wherein the first moving part and the second moving part are respectively inserted into two ends of the arc-shaped pipe and can slide relative to the arc-shaped pipe;
the actuating mechanism and the transmission mechanism are mutually matched to form a structure which can control the relaxation of the spring through the motor to drive the ball to move, further drive the two moving parts to extend out or retract from the arc-shaped pipe and finally drive the two cutting parts to be mutually attached and overlapped or separated, wherein the surfaces of the two cutting parts which are mutually attached are vertical to the central shaft of the wire loop.
2. The wire stripping auxiliary detection device according to claim 1, wherein the end of the first cutting member remote from the first moving member and the end of the second cutting member remote from the second moving member are provided with auxiliary cutting members for axially cutting the strand sheaf when the wire loop moves axially along the strand sheaf.
3. The auxiliary wire stripping detection device of claim 2, wherein the first cutting member and the second cutting member are solid arc-shaped cylindrical structures; the first moving piece and the second moving piece are hollow arc-shaped columnar structures.
4. The wire stripping auxiliary detection device as claimed in claim 3, wherein the cross section of the first cutting member and the second cutting member is a right trapezoid, the upper base and the lower base of the right trapezoid are perpendicular to the central axis of the wire loop, the lower base is located on the surface where the two cutting members are attached to each other, the straight waist of the right trapezoid is located on the inner side of the wire loop, the oblique waist is located on the outer side of the wire loop, and the straight waist is parallel to the central axis of the wire loop.
5. The wire stripping auxiliary detection device of claim 4, wherein the first cutting member is inserted into the first moving member and fixedly connected thereto; the second cutting member is inserted into the second moving member and fixedly coupled thereto.
6. The auxiliary wire stripping detection device as claimed in claim 5, wherein the first moving member and the second moving member are formed by connecting four side plates, and the section of the first moving member and the second moving member is rectangular; the side plate a and the side plate b of the first moving part are opposite and perpendicular to the central axis of the wire ring; the side plate c and the side plate d of the second moving part are opposite and perpendicular to the central axis of the wire ring; the side plate a of the first moving piece and the side plate c of the second moving piece are coplanar, and the side plate b of the first moving piece and the side plate d of the second moving piece are coplanar; the first cutting piece is attached to the side plate a of the first moving piece, and the second cutting piece is attached to the side plate d of the second moving piece, or the first cutting piece is attached to the side plate b of the first moving piece, and the second cutting piece is attached to the side plate c of the second moving piece.
7. The auxiliary wire stripping detection device as claimed in claim 6, wherein the surface of the first cutting member, which is attached to the side plate of the first moving member, is a surface v, the surface of the second cutting member, which is attached to the side plate of the second moving member, is a surface w, the auxiliary cutting member is a triangular pyramid or a triangular prism, and the bottom surface of the triangular pyramid or the rectangular side surface of the triangular prism is attached to the surface v of the first cutting member and the surface w of the second cutting member.
8. The auxiliary wire stripping detection device of claim 7, wherein the arc tube has a rectangular cross section, the arc tube has a composite layer structure, the inner layer is made of steel, and the outer layer is made of plastic material.
9. The auxiliary wire stripping detection device of claim 8, wherein the first moving member and the second moving member are connected with the arced tube by interference fit of a positioning pin.
10. The auxiliary wire stripping detection device as claimed in claim 1, wherein the straight tube is perpendicularly connected with a face m of a cubic base, a face n of the cubic base is parallel to the face m, the face n is recessed towards the face m to form a rectangular groove, and the motor is mounted in the rectangular groove.
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| CN201910846766.4A CN110646705B (en) | 2019-09-09 | 2019-09-09 | Auxiliary wire stripping detection device |
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| CN110646705B (en) | 2021-06-18 |
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