Automatic fixed-length cutting method and device for cable

Abstract

The invention provides an automatic fixed-length cutting method and device for a cable, and is specifically applied to the field of electric power. The method mainly comprises the steps that a central control device sets the fixed length of a cable to be cut through input parameters; the cable is connected into a conveying device, and the conveying device guides the cable to be conveyed forwards; when the head of the cable advances to the position of the cutting device, the measuring device starts to measure the length of the passing cable and sends the length of the passing cable to the central control device; when the length of the passing cable is equal to the fixed length of the cable to be cut, the central control device controls the conveying device to stop conveying; and the visual verification device verifies that the length of the cable is consistent with the fixed length of the cable to be cut, and then the cable is cut. Through an automatic means, the cable is automatically cut according to the set length, and errors are reduced.

Description

Technical Field

[0001] The invention belongs to the field of electric power, and in particular relates to a method and a device for automatically cutting cables to a fixed length. Background Art

[0002] Cable is a general term for optical cables, electrical cables, etc. Cables have many uses, mainly used for controlling installation, connecting equipment, transmitting electricity, and other multiple functions. They are common and indispensable in daily life.

[0003] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables. Cables in a narrow sense refer to insulated cables, which can be defined as: a collection of the following parts; one or more insulated cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors.

[0004] Manual cable cutting is very inconvenient, moving the cable is dangerous, and when cutting a long cable, the measured cable length has a large error with the actual required length. In the prior art, when the cable length is measured by automated means, errors in the measuring device may also cause cable cutting errors and cannot be discovered in a short time, which can easily cause very large losses. Summary of the invention

[0005] In view of this, the present invention proposes a method and device for automatically cutting cables to a fixed length, which uses automated means to automatically cut the cables to a set length to reduce errors, specifically:

[0006] A method for automatically cutting a cable to a fixed length comprises the following steps:

[0007] S1. The central control device sets the fixed length of the cable to be cut by inputting parameters;

[0008] S2, connecting the cable to the conveying device, and the conveying device guides the cable to be conveyed forward;

[0009] S3, when the cable head moves to the cutting device position, the measuring device starts to measure the length of the cable passing through and sends the length of the cable passing through to the central control device;

[0010] S4. When the length of the cable passing through is equal to the fixed length of the cable to be cut, the central control device controls the conveying device to stop conveying;

[0011] S5, collecting an image of the cable extending beyond the position of the cutting device through a visual verification device and sending it to the central control device; the central control device calculates the length of the cable segment based on computer vision;

[0012] S6. When the cable length is verified to be consistent with the fixed length of the cable to be cut, the central control device controls the cutting device to cut the cable, and then controls the conveying device to start and continue to guide the cable to be conveyed forward.

[0013] Furthermore, in step S1, the input parameter is directly the fixed length of the cable to be cut; or is a calculated parameter, and the fixed length of the cable to be cut is calculated according to the cable fixed length calculation formula in the central control device.

[0014] Furthermore, in step S3, an inductive sensor is arranged at the position of the cutting device, and the inductive sensor is connected to the central control device. When the inductive sensor senses the cable and sends a sensing signal to the central control device, the central control device controls the measuring device to start measuring.

[0015] Furthermore, in step S5, the visual verification device uses an industrial camera to capture an image of the cable outside the position of the cutting device. After receiving the cable image, the central control device calculates the pixel length of the cable in the image and converts it into the actual length of the cable.

[0016] In another aspect, the present invention also provides an automatic cable length cutting device, comprising a conveying device, a measuring device, a cutting device, a central control device, and a visual verification device; the measuring device is connected to the central control device for communication, and sends a length measurement signal to the central control device; the visual verification device is connected to the central control device for communication, and sends a cable length signal verified by computer vision to the central control device;

[0017] The central control device is communicatively connected to the conveying device and the cutting device.

[0018] Furthermore, the central control device is an industrial computer, which is provided with a communication interface with the conveying device, measuring device, cutting device, and visual verification device.

[0019] Furthermore, the visual verification device includes an industrial camera, and the industrial camera is connected to the central control device.

[0020] Furthermore, the central control device is provided with an image processing module to calculate the pixel length of the cable in the image sent by the industrial camera and convert it into the actual length of the cable.

[0021] Furthermore, the central control device is also provided with a comparison module for comparing the length obtained from the measuring device with the fixed length of the cable to be cut, and for comparing the actual length of the cable obtained from the visual verification device with the fixed length of the cable to be cut.

[0022] Furthermore, the cutting device is provided with an inductive sensor, and the inductive sensor is connected to the central control device. When the inductive sensor senses the cable and sends an inductive signal to the central control device, the central control device controls the measuring device to start measuring.

[0023] The beneficial effects of the present invention are:

[0024] The weight of the cable roll is mostly between 2 and 3 tons, and the cable diameter can reach 70 mm or even larger. When cutting the cable manually, the operation is very inconvenient, moving the cable is prone to danger, and when cutting a long cable, the measured cable length and the actual required length have a large error. The present invention uses automation to cut the cable automatically according to the set length, reducing the intensity of manual work, and is set to verify the length through computer vision before cutting, avoiding errors in the automatic cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings constituting a part of the present invention 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 accompanying drawings:

[0026] Figure 1 is a flow chart of an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the automatic cutting structure of an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of a control architecture according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 1: Cable; 2: Conveying device; 3: Measuring device; 4: Cutting device. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0033] The present invention provides a method and device for automatically cutting a cable 1 to a fixed length, such as Figure 2As shown, the structure of automatic fixed-length cutting specifically includes: a conveying device 2, a measuring device 3, and a cutting device 4; wherein the conveying device 2 is a conveying wheel correspondingly arranged on both sides. When the cable 1 is conveyed, the two conveying wheels clamp the cable 1 and rotate in the same direction, one forward and one reverse, driving the cable 1 between the two to move forward. The measuring device 3 is provided with a sensor, which can measure the length of the cable 1 passing through. The cutting device 4 is provided with a cutting tool, which can cut the cable 1 from top to bottom.

[0034] In order to realize automatic control, the conveying device 2, measuring device 3, and cutting device 4 are all connected to a central control device, which can be an industrial computer or other host computer, and is provided with an interface for communicating with the conveying device 2, measuring device 3, and cutting device 4.

[0035] In the above structure, the measuring device 3 undertakes the most core task of determining the length of the cable 1. In order to prevent problems with the measuring device 3 from affecting the fixed-length cutting of the cable 1, the present invention also provides a visual verification device, which includes an industrial camera, and the industrial camera is connected to the central control device.

[0036] The control architecture and control principle of the above structure are as follows Figure 3 As shown, the measuring device 3 is connected to the central control device for communication, and sends a length measurement signal to the central control device; the visual verification device is connected to the central control device for communication, and sends a length signal of the cable 1 verified by computer vision to the central control device; the central control device is connected to the conveying device 2 for communication with the cutting device 4. The cutting device 4 is provided with an inductive sensor, and the inductive sensor is connected to the central control device. When the inductive sensor senses the cable 1 and sends an inductive signal to the central control device, the central control device controls the measuring device 3 to start measuring.

[0037] The central control device is also provided with corresponding software modules, firstly, an image processing module, which calculates the pixel length of the cable 1 in the image sent by the industrial camera and converts it into the actual length of the cable 1. Secondly, a comparison module is also provided, which is used to compare the length obtained from the measuring device 3 with the fixed length of the cable 1 to be cut, and to compare the actual length of the cable 1 obtained from the visual verification device with the fixed length of the cable 1 to be cut.

[0038] Based on the above device structure, the cable 1 automatic fixed length cutting method proposed by the present invention is as follows Figure 1 As shown, including:

[0039] S1. The central control device sets the fixed length of the cable 1 to be cut by inputting parameters; the input parameters are directly the fixed length of the cable 1 to be cut; or are calculated parameters, and the fixed length of the cable to be cut is calculated according to the fixed length calculation formula of the cable 1 in the central control device;

[0040] S2, connecting the cable 1 to the conveying device 2, and the conveying device 2 guides the cable 1 to be conveyed forward;

[0041] S3, when the head of the cable 1 moves to the position of the cutting device 4, the measuring device 3 starts to measure the length of the cable 1 passing through, and sends the length of the cable 1 passing through to the central control device; when the induction sensor of the cutting device 4 senses the cable 1 and sends the induction signal to the central control device, the central control device controls the measuring device 3 to start measuring;

[0042] S4, when the length of the cable passing through is equal to the fixed length of the cable to be cut, the central control device controls the conveying device 2 to stop conveying;

[0043] S5, collecting the image of the cable extending beyond the position of the cutting device 4 through the visual verification device and sending it to the central control device; the central control device calculates the length of the cable segment based on computer vision; the specific method is: after receiving the cable image, calculating the pixel length of the cable in the image, and converting it into the actual length of the portion of the cable;

[0044] S6. When the length of the cable 1 is verified to be consistent with the fixed length of the cable to be cut, the central control device controls the cutting device 4 to cut the cable 1, and then controls the conveying device 2 to start and continue to guide the cable 1 to be conveyed forward.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for automatically cutting a cable to a certain length, characterized in that: The following steps are involved: S1. The central control device sets the fixed length of the cable to be cut by inputting parameters; S2, connecting the cable to the conveying device, and the conveying device guides the cable to be conveyed forward; S3, when the cable head moves to the cutting device position, the measuring device starts to measure the length of the cable passing through and sends the length of the cable passing through to the central control device; S4. When the length of the cable passing through is equal to the fixed length of the cable to be cut, the central control device controls the conveying device to stop conveying; S5, collecting an image of the cable extending beyond the position of the cutting device through a visual verification device and sending it to the central control device; the central control device calculates the length of the cable segment based on computer vision; S6. When the cable length is verified to be consistent with the fixed length of the cable to be cut, the central control device controls the cutting device to cut the cable, and then controls the conveying device to start and continue to guide the cable to be conveyed forward.

2. The method for automatically cutting cables to a certain length according to claim 1, characterized in that: In step S1, the input parameter is directly the fixed length of the cable to be cut; or it is a calculated parameter, and the fixed length of the cable to be cut is calculated according to the cable fixed length calculation formula in the central control device.

3. The method for automatically cutting cables to a certain length according to claim 1, characterized in that: In step S3, an inductive sensor is arranged at the position of the cutting device, and the inductive sensor is connected to the central control device. When the inductive sensor senses the cable and sends a sensing signal to the central control device, the central control device controls the measuring device to start measuring.

4. The method for automatically cutting cables to a certain length according to claim 1, characterized in that: In step S5, the visual verification device uses an industrial camera to capture the image of the cable outside the position of the cutting device. After receiving the cable image, the central control device calculates the pixel length of the cable in the image and converts it into the actual length of the cable.

5. A cable automatic fixed length cutting device, characterized in that: It includes a conveying device, a measuring device, a cutting device, a central control device, and a visual verification device; the measuring device is connected to the central control device for communication, and sends a length measurement signal to the central control device; the visual verification device is connected to the central control device for communication, and sends a cable length signal verified by computer vision to the central control device; The central control device is communicatively connected to the conveying device and the cutting device.

6. The automatic cable cutting-to-length device according to claim 5, characterized in that: The central control device is an industrial computer, which is provided with a communication interface with the conveying device, measuring device, cutting device and visual verification device.

7. The automatic cable cutting-to-length device according to claim 5, characterized in that: The visual verification device includes an industrial camera, and the industrial camera is connected to the central control device.

8. The automatic cable cutting-to-length device according to claim 7, characterized in that: The central control device is provided with an image processing module to calculate the pixel length of the cable in the image sent by the industrial camera and convert it into the actual length of the cable.

9. The automatic cable cutting-to-length device according to claim 7, characterized in that: The central control device is also provided with a comparison module for comparing the length obtained from the measuring device with the fixed length of the cable to be cut, and for comparing the actual length of the cable obtained from the visual verification device with the fixed length of the cable to be cut.

10. The automatic cable cutting-to-length device according to claim 5, characterized in that: The cutting device is provided with an inductive sensor, and the inductive sensor is connected to the central control device. When the inductive sensor senses the cable and sends an inductive signal to the central control device, the central control device controls the measuring device to start measuring.

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