Insulated wire stripper, fixed-length stripping control method and controller

Abstract

The present invention discloses an insulated wire stripper, a fixed-length stripping control method and a controller. The stripper includes a fixed part, a rotating part, a clamping part, a cutting part, and a control module. The clamping part includes a pair of clamps and a clamp driving motor, and also includes a clamp limit position sensor, a rotation counting device of the clamp driving motor, a stripping circle counting device, and a plurality of ribs arranged at fixed angles on a pair of clamps. The clamp limit position sensor is triggered when the clamp is released to the limit position, and the motor rotation count is correspondingly reset. The control module is used to execute each step of the fixed-length stripping control method of the stripper. The present invention adopts fixed-angle ribs, does not require a complex angle switching device, has a simple structure and high reliability. There is no need to set up a separate sensor to measure the clamp distance and the outer diameter of the wire, and there is no need to set up a separate sensor to measure the lateral movement distance, and does not increase weight, volume and cost.

Description

Technical Field

[0001] The invention relates to a live stripping technology for an insulated overhead conductor, in particular to an insulated conductor stripping device, a fixed-length stripping control method and a controller. Background Art

[0002] When stripping live wires, the insulation needs to be stripped to a certain length, which is generally slightly longer than the wire clamp. If it is too short, subsequent operations cannot be completed, and if it is too long, the exposed conductor is too long, making it difficult to restore insulation later.

[0003] In actual operation, since the operating personnel must maintain a sufficient safe distance from the live insulated wires, the stripping length is not easy to observe and measure. It is difficult to control the stripping length within a reasonable range manually. A technology that automatically controls the stripping length is needed to meet the needs of on-site operations.

[0004] Chinese utility model patent CN202022424706.4 discloses a wire stripping device, which uses an angle adjustment part to adjust the distance the stripping device advances per rotation during rotary cutting. For different types of wires and different wire diameters, the angle adjustment part will rotate to different angles.

[0005] Chinese invention patent CN202011157095.X discloses a method for controlling a wire stripping device, which includes a method for calculating the outer diameter of the wire based on the distance between the clamping blocks and the clamping block angle, and a method for calculating the adjustment angle of the corrugated bar based on the outer diameter of the wire and the single-turn lateral movement distance.

[0006] The above technologies all use the method of adjusting the angle of the strip to control the single-turn lateral feed of the peeling tool, and the actuator for adjusting the strip angle is an angle switching device. Its main disadvantage is that the output accuracy of the angle switching device is poor and the stripping length cannot be accurately controlled. Summary of the invention

[0007] The object of the present invention is to provide an insulated wire stripper, a fixed-length stripping control method and a controller to replace the original stripper angle adjustment method.

[0008] To this end, the present invention provides a fixed-length stripping control method for a stripper, comprising the following steps: S10, reading a calibration parameter C4 from a non-volatile memory, wherein C4 is the motor rotation count of the clamping motor of the clamping block during calibration of an empty clamp, and if C4=0, controlling the stripping operation to exit, and prompting calibration; S11, obtaining a target stripping length D; S12, controlling a pair of clamping blocks to loosen until the limit position sensor is triggered, and then clamping the wire until it is clamped, recording the motor rotation count C5, and if C5>C4, exiting the stripping operation, and prompting calibration; S13, controlling the preset key equipment parameters C1, C2, C3, D2, D3, target stripping length D, calibration parameter C4, and motor rotation count C5, calculate the target stripping turns Q1; and S14, control to start rotary stripping, start recording the stripped turns Q2 after identifying the wire core, and end rotary stripping when flipping the stripping until Q2 ≥ Q1, wherein C1 is the motor rotation count when the prototype is empty, C2 is the motor rotation count when the prototype clamps the thinnest wire, C3 is the motor rotation count when the prototype clamps the thickest wire, D2 is the single-turn lateral travel distance measured when the prototype clamps the thinnest wire, and D3 is the single-turn lateral travel distance measured when the prototype clamps the thickest wire.

[0009] According to another aspect of the present invention, there is provided a controller for use in an insulated wire stripper, which has a built-in fixed-length stripping program, which when executed implements the steps of the above-mentioned fixed-length stripping control method for the stripper.

[0010] The present invention also provides an insulated wire stripper, comprising a fixed part, a rotating part, a clamping part, a cutting part, and a control module, wherein the clamping part comprises a pair of clamping blocks and a clamping block driving motor, the rotating part comprises a flipping motor, the cutting part comprises a stripping knife, and further comprises a clamping block limit position sensor, a rotation counting device of the clamping block driving motor, a stripping circle counting device, and a plurality of ribs arranged at fixed angles on a pair of clamping blocks, wherein the clamping block limit position sensor is triggered when the clamping block is released to the limit position, and the motor rotation count is correspondingly reset to zero, and the control module is used to execute each step of the fixed-length stripping control method of the stripper.

[0011] The present invention adopts fixed-angle ribs, does not require a complex angle switching device, has a simple structure and high reliability. It is not necessary to set up a separate sensor to measure the clamping block distance and the outer diameter of the wire, and it is not necessary to set up a separate sensor to measure the lateral movement distance, and does not increase the weight, volume and cost. When the clamping block wears and causes the gap to increase, it can also be recalibrated to reduce the error, and has good stability in long-term use.

[0012] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1 is a flow chart of a fixed-length peeling control method for a peeler according to the present invention;

[0015] Figure 2 is a block diagram of a fixed-length peeling control system for a peeler according to the present invention;

[0016] Figure 3 is a schematic diagram of the operating module of the peeler according to the present invention when the clamping block is released to the limit position;

[0017] Figure 4 is a schematic diagram of the working module of the peeler according to the present invention when the clamping block is empty or clamped; and

[0018] Figure 5 It is a schematic diagram of the working module of the stripper according to the present invention when the clamping block clamps the conductor. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0020] Strippers are usually used to strip the wires during live stripping of insulated overhead wires so as to install terminal clamps on the wires. Traditional strippers are mainly composed of a fixed part, a rotating part, a clamping part, a cutting part, a control module, etc.

[0021] The fixing part is composed of an opening and closing gear, which is connected to a hand-held rod and is held and fixed by the hand-held rod during operation. The clamping part and the cutting part rotate relative to the fixing part along with the rotating part, and the rotating part is driven by a flip motor.

[0022] The clamping part is mainly composed of a clamping block driving motor 11 , a transmission assembly 12 , and a pair of clamping blocks 13 . The clamping block driving motor 11 drives the pair of clamping blocks 13 through the transmission assembly 12 to center and clamp the insulated wire 17 .

[0023] The typical structure of the above-mentioned peeler is described in detail in Chinese patent documents CN202011157095.X and CN202022424706.4, which will not be repeated here.

[0024] In the peeling device of the present invention, as Figure 3-Figure 5 As shown, a plurality of ribs 16 with fixed angles are arranged on a pair of clamping blocks to replace the existing solution in which a plurality of ribs are arranged on two rotating disks.

[0025] While taking the stripping efficiency into consideration, preferably, the angle of the rib 16 in the clamp of the present invention is designed to be smaller, in other words, a smaller value is taken within the design range, and the stripping knife 14 in the cutting portion is designed to be wider, in other words, a larger value is taken within the design range. In this way, even when encountering the stripping scenario with the thickest wire, the lateral travel distance corresponding to one turn of the operation will not be too wide, so as to prevent the stripping from being unable to connect with the previous circle.

[0026] In the prior art, a pair of clamps are arranged flush along the axial direction of the conductor at both ends. Preferably, in the present invention, a pair of clamps are arranged flush along the axial direction of the conductor at one end away from the stripping knife, and at the other end, the clamp 131 on one side of the stripping knife is shortened relative to the clamp 132 on the opposite side of the stripping knife, and the shortened space is sufficient to arrange the stripping knife 14.

[0027] Combined with reference Figures 2 to 5 The present invention is also equipped with a clamp block limit position sensor 15, which is triggered when the clamp block is released to the limit position. The limit position sensor can be a proximity switch, a micro switch, a travel switch, a photoelectric switch, a Hall switch, etc. The limit position sensor can be arranged between the two clamp blocks, or between one of the clamp blocks and the peeler body.

[0028] In the peeler, the rotation pulse of the clamp driving motor needs to be connected to the control module. The method of recording the motor rotation count can use an external photoelectric encoder, an external magnetic encoder, a motor built-in Hall sensor and other rotation counting devices to obtain the motor rotation amount.

[0029] The stripping circle counting pulse needs to be connected to the control module. The stripping circle count can be collected by a stripping circle counting device such as a photoelectric switch, a proximity switch, or a Hall sensor. It is triggered once for one rotation, and the stripping circle count +1. It can also be configured with a stripping circle counting device consisting of multiple switches or sensors, which is triggered multiple times for one rotation to achieve more accurate fixed-length stripping control.

[0030] The number of peeling circles can also be realized by collecting the rotation count of the flip motor. If the count value of a complete rotation is M1, the value of the rotation circle is: the current rotation count M2 / M1, and the result can be a decimal, so as to realize more accurate fixed-length peeling control. The specific rotation count of the flip motor can be obtained by using methods such as external photoelectric encoder, external magnetic encoder, motor built-in Hall sensor, etc.

[0031] Referring to the key parameter definition table of the equipment, the parameters involved in the present invention are defined as follows:

[0032] Equipment key parameter definition table

[0033]

[0034] Among them, the size relationship of C1, C2, and C3 is: C1>C2>C3>0; after the size of the clamping mechanism of the peeler and the angle of the corrugated strip are determined, the corresponding C1, C2, C3, D2, and D3 are fixed values. After the measurement is completed on the prototype during the development phase, they are directly solidified in the program. Affected by differences in machine assembly, differences in component size, and degree of wear, C4 is a variable value, which is stored in the non-volatile memory. Before leaving the factory, and when wear and gap increase due to long-term use, this value needs to be updated through calibration.

[0035] The target stripping length D is set by the user and saved in non-volatile memory.

[0036] The process of obtaining key parameters during the development phase (only needs to be performed once on the prototype):

[0037] 1. Release the clamp until the limit position sensor is triggered (such as Figure 3 As shown), without inserting the wire, clamp the empty clamp tightly (as shown Figure 4 As shown), record the motor rotation count C1;

[0038] 2. Loosen the clamp until the limit position sensor is triggered, and insert the thinnest wire that can be supported, such as Figure 5 As shown, clamp the wire until it is clamped, record the motor rotation count C2, and measure the single-turn lateral travel distance D2;

[0039] 3. Loosen the clamp until the limit position sensor is triggered, insert the thickest wire that can be supported, clamp the wire until it is clamped, record the motor rotation count C3, and measure the single-turn lateral travel distance D3.

[0040] Calibration process (performed when calibration is required):

[0041] Receive the calibration instruction, control the loosening of the clamp until the limit position sensor is triggered, do not put in the wire, clamp the empty clamp, record the motor rotation count C4, record C4 in the non-volatile memory, and the calibration is completed.

[0042] Peeling process, such as Figure 1 As shown:

[0043] S10, read C4 from the non-volatile memory; if C4 = 0, it prompts that calibration is required and exits the work.

[0044] S11, read the target stripping length D from the non-volatile memory.

[0045] S12, control the loosening of the clamp block until the limit position sensor is triggered, clamp the wire until it is clamped, and record the motor rotation count C5. If C5>C4, it prompts that calibration is required and exits the work.

[0046] S13, calculate the target number of peeling circles Q1 = D / D5, where D5 is the lateral travel distance corresponding to one turn of this operation, D5 = (C4-C5-(C1-C2))*(D3-D2) / (C2-C3)+D2.

[0047] S14, control the stripper to start rotating and stripping, and start recording the number of stripped turns Q2 after identifying the wire core. If the stripping is reversed until Q2 ≥ Q1, the stripping operation is completed.

[0048] Preferably, the method for obtaining the target stripping length D is as follows: the operator inputs the target stripping length D through the user interaction interface of the stripper control terminal, then stores the target stripping length D in a non-volatile memory, and finally reads the target stripping length D from the non-volatile memory.

[0049] Preferably, the method for prompting calibration is as follows: sending prompting calibration information to the peeler control terminal, prompting by the luminous button on its control panel and / or prompting on the user interaction interface.

[0050] The peeling control terminal is a special intelligent device developed for remotely controlling the peeling machine, and can also be a smart phone, tablet computer, laptop computer, desktop computer, smart speaker, smart watch, etc. with a control program installed. The peeling control terminal can be directly or indirectly connected to the peeling machine through wired or wireless communication.

[0051] The present invention also provides a controller, such as a single chip microcomputer, a microcomputer, etc., which is used in an insulated wire stripper, and has a built-in fixed-length stripping program, which implements each step of the fixed-length stripping control method of the stripper when executed.

[0052] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixed-length peeling control method for a peeler, characterized in that: The following steps are involved: S10, read the calibration parameter C4 from the non-volatile memory, where C4 is the motor rotation count of the clamping motor of the clamp block during calibration of the empty clamp, and if C4=0, the control exits the peeling work and prompts calibration; S11, obtaining a target stripping length D; S12, control a pair of clamps to loosen until the limit position sensor is triggered, then clamp the wire until it is clamped, record the motor rotation count C5, if C5>C4, exit the stripping process and prompt calibration; S13, calculating the target number of stripping turns Q1 according to the preset key equipment parameters C1, C2, C3, D2, D3, the target stripping length D, the calibration parameter C4, and the motor rotation count C5; as well as S14, control to start rotary stripping, start recording the number of stripped turns Q2 after identifying the wire core, and end rotary stripping when Q2≥Q1. Among them, C1 is the motor rotation count when the prototype is empty, C2 is the motor rotation count when the prototype clamps the thinnest wire, C3 is the motor rotation count when the prototype clamps the thickest wire, D2 is the single-circle lateral travel distance measured when the prototype clamps the thinnest wire, and D3 is the single-circle lateral travel distance measured when the prototype clamps the thickest wire.

2. The method for controlling the fixed-length peeling of a peeler according to claim 1, characterized in that: The calculation formula for the target number of peeling circles Q1 is as follows: Q1=D / D5, where D5 is the lateral travel distance corresponding to one turn of this operation, and D5=(C4-C5-(C1-C2)) * (D3-D2) / (C2-C3) + D2.

3. The fixed-length peeling control method of a peeler according to claim 1, characterized in that: The method for counting the motor rotations is as follows: the clamp block limit position sensor is triggered when the clamp block is released to the limit position, the motor rotation count is reset accordingly, and then the clamp block drives the motor to rotate and drive the clamp block to clamp, at which time the motor rotation count is counted.

4. The fixed-length peeling control method of a peeler according to claim 1, characterized in that: The method for obtaining the target stripping length D is as follows: the operator inputs the target stripping length D through the user interaction interface of the stripper control terminal, then stores the target stripping length D in a non-volatile memory, and finally reads the target stripping length D from the non-volatile memory.

5. The method for controlling the fixed-length peeling of a peeler according to claim 1, characterized in that: The method for prompting calibration is as follows: sending prompting calibration information to the peeler control terminal, prompting by the luminous button on its control panel and / or prompting on the user interaction interface.

6. A controller, characterized in that: Used in an insulated wire stripper, the controller has a built-in fixed-length stripping program, which, when executed, implements the steps of the fixed-length stripping control method for a stripper according to any one of claims 1 to 2.

7. The controller according to claim 6, characterized in that: The fixed-length stripping program also includes a calibration program, which implements the following steps when executed: S20, controlling the clamp to loosen until the limit position sensor is triggered, without inserting the wire, clamping the empty clamp, recording the motor rotation count C4, recording C4 in the non-volatile memory, and completing the calibration.

8. An insulated wire stripper, comprising a fixing part, a rotating part, a clamping part, a cutting part, and a control module, wherein the clamping part comprises a pair of clamping blocks and a clamping block driving motor, the rotating part comprises a flipping motor, and the cutting part comprises a stripping knife, characterized in that: It also includes a clamp block limit position sensor, a rotation counting device for the clamp block driving motor, a peeling circle counting device, and a plurality of ribs arranged at fixed angles on a pair of clamp blocks. The clamp block limit position sensor is triggered when the clamp block is released to the limit position, and the motor rotation count is reset accordingly. The control module is used to execute each step of the fixed-length peeling control method of the peeler according to any one of claims 1 to 2.

9. The insulated wire stripper according to claim 8, characterized in that: The angle of the ribs in the clamping block takes a small value within the design range, and the width of the peeling knife of the cutting part takes a large value within the design range.

10. The insulated wire stripper according to claim 8, characterized in that: The pair of clamps are arranged flush along the axial direction of the insulated wire away from the stripping knife, and at the other end, the clamp on one side of the stripping knife is shortened relative to the clamp on the opposite side of the stripping knife, and the shortened space is used to arrange the stripping knife.

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