Online detection equipment for hook-to-hook joint of metal monofilament

Abstract

The utility model discloses on-line detection equipment for a hook joint of a metal monofilament, which comprises a rack, and a driven wheel pair, a visual identification device, a cutting mechanism, a driving motor and a driving wheel pair which are sequentially arranged along the advancing direction of the metal monofilament, and the driven wheel pair comprises an upper driven wheel and a lower driven wheel; the upper driven wheel and the lower driven wheel are installed on the machine frame through an upper driven wheel shaft and a lower driven wheel shaft respectively, a vertical sliding way is arranged on the machine frame, and the upper driven wheel shaft is installed on the sliding way in a sliding mode. The visual identification device comprises a camera; the cutting mechanism is provided with a cutter; the driving wheel pair comprises an upper driving wheel and a lower driving wheel, the upper driving wheel is connected with a driving motor, the lower driving wheel is installed on the machine frame through a lower driving wheel shaft, and a channel exists between the upper driving wheel and the lower driving wheel. According to the utility model, whether a hook joint exists in the metal monofilament in the rewinding process can be detected on line, and the hook joint can be quickly cut off on line when the metal monofilament is detected to meet the hook joint, so that the production safety is improved.

Description

Technical Field

[0001] The utility model belongs to the field of metal monofilament processing equipment, and more specifically relates to an online detection device for hook joints of metal monofilaments. Background Art

[0002] For power cables such as Optical Fiber Composite Overhead Ground Wire (OPGW) and Optical Fiber Composite Overhead Phase Cable (OPPC), the entire coil of metal monofilaments needs to be cut into the length required by the contract before the metal monofilaments are twisted. Therefore, a finished OPGW or OPPC has a large number of metal monofilaments that need to be cut.

[0003] At present, some metal monofilament manufacturers encounter metal monofilament breakage during the slitting production process. In order to reduce costs, they will bend the ends of two sections of metal monofilament into elbows and hook them together to form a hook joint. The position of the hook joint is marked on the sign to remind the subsequent twisting station.

[0004] However, in actual operation, there is always a phenomenon of omission without stopping the machine (no signboard is set, the signboard is not noticed, or the signboard is noticed and neglected), and the hook joint will enter the twisting equipment of the production line, resulting in the metal monofilament being twisted. If the two elbows of the hook joint are disengaged during the twisting process, the metal monofilament will suddenly break during the high-speed twisting process of the twisting equipment, and the metal monofilaments at both ends of the hook joint will break and fly out and dance at high speed, which will cause huge hidden dangers at the construction site and cause serious quality accidents. Utility Model Content

[0005] In response to the above defects or improvement needs of the prior art, the utility model provides an online detection device for the hook joint of a metal monofilament, which can quickly cut off the breakpoint online when it detects that the metal monofilament encounters a breakpoint joint, thereby improving the safety and stability of the equipment.

[0006] To achieve the above-mentioned object, according to the utility model, an online detection device for hook joints of metal monofilaments is provided, characterized in that it comprises a frame and a driven wheel pair, a visual recognition device, a cutting mechanism, a driving motor and a driving wheel pair arranged in sequence along the advancing direction of the metal monofilament, wherein:

[0007] The frame is provided with a vertical slideway;

[0008] The driven wheel pair comprises an upper driven wheel and a lower driven wheel for clamping the metal monofilament, the upper driven wheel and the lower driven wheel are respectively mounted on the frame through an upper driven wheel shaft and a lower driven wheel shaft, and the upper driven wheel shaft is slidably mounted on the slideway so as to adjust the vertical position of the upper driven wheel;

[0009] The visual recognition device includes a camera for identifying the hook joint on the metal monofilament;

[0010] The cutting mechanism is installed on the frame, and the cutting mechanism has a cutter for cutting off the hook joint on the metal monofilament;

[0011] The driving wheel pair includes an upper driving wheel and a lower driving wheel, the upper driving wheel is connected to the driving motor to rotate under the drive of the driving motor, the driving motor is installed on the frame, and the lower driving wheel is installed on the frame through a lower driving wheel shaft. There is a channel for passing the metal monofilament between the upper driving wheel and the lower driving wheel, so that the upper driving wheel and the lower driving wheel cooperate to pull the metal monofilament forward.

[0012] Preferably, a return spring for returning the upper driven wheel downward is provided between the upper driven wheel shaft and the frame.

[0013] Preferably, a distance sensor is provided on the upper driven wheel axle to obtain the vertical displacement of the upper driven wheel axle.

[0014] Preferably, the method further comprises a plurality of guide wheels for supporting the metal monofilaments.

[0015] Preferably, the camera is a fisheye camera.

[0016] Preferably, a rubber layer is provided on the outer rings of the upper driven wheel and the lower driven wheel.

[0017] Preferably, a rubber layer is provided on the outer rings of the upper driving wheel and the lower driving wheel.

[0018] Preferably, the slideway is a guide rail, and the upper driven wheel shaft is mounted on the guide rail via a slider.

[0019] Preferably, the upper driven wheel is rotatably mounted on the upper driven wheel shaft, and the lower driven wheel is rotatably mounted on the lower driven wheel shaft.

[0020] Preferably, the lower driving wheel is rotatably mounted on the lower driving wheel shaft.

[0021] In general, the above technical solution conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0022] The utility model discloses an online detection device for hook joints of metal monofilaments. The driving wheel pair plays a traction role to make the metal monofilament advance, and the driven wheel pair plays a role of pressing the metal monofilament, thereby ensuring that a section of the metal monofilament between the driving wheel pair and the driven wheel pair is in a straightened state, thereby ensuring the shooting effect of the camera. If there is a hook joint on the metal monofilament, the movement of the joint can make the upper driven wheel move up and directly pass through the driven wheel pair. The camera of the visual recognition device can take a picture of the metal monofilament to identify whether there is a hook joint. If there is a hook joint, the cutter of the cutting mechanism cuts off the hook joint. After the joint is identified, the running speed of the twisting equipment of the subsequent workstation will be reduced and stopped, thereby preventing the metal monofilaments disconnected at both ends of the hook joint from entering the twisting equipment and dancing at high speed, thereby improving production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a metal monofilament without a joint passing through the utility model;

[0024] Figure 2 It is a schematic diagram of a metal monofilament with a joint passing through the utility model;

[0025] Figure 3 It is a schematic diagram of the driven wheel pair in the utility model being installed on the frame. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] Reference Figure 1 to Figure 3 , an online detection device for a metal monofilament hook joint, comprising a frame 17 ( Figure 1 , Figure 2 The machine frame 17 is provided with a vertical slideway, wherein:

[0028] The driven wheel pair includes an upper driven wheel 2 and a lower driven wheel 3 for cooperating to clamp the metal monofilament 1. The upper driven wheel 2 and the lower driven wheel 3 are respectively mounted on the frame 17 through an upper driven wheel shaft 4 and a lower driven wheel shaft 5. The upper driven wheel 2 is preferably rotatably mounted on the upper driven wheel shaft 4, and the lower driven wheel 3 is preferably rotatably mounted on the lower driven wheel shaft 5, so that there is rolling friction between the upper driven wheel 2 and the metal monofilament 1, and the friction force is small, which has little effect on the normal movement of the metal monofilament 1. The outer rings of the upper driven wheel 2 and the lower driven wheel 3 are preferably provided with a rubber layer so that the metal monofilament 1 will not be scratched when it moves. The upper driven wheel shaft 4 is slidably mounted on the slideway to adjust the vertical position of the upper driven wheel 2. The slideway can be a vertical long hole, and the upper driven wheel shaft 4 passes through this long hole, so that the upper driven wheel shaft 4 can move up and down. In the present invention, the slideway is preferably a guide rail 15, and the upper driven wheel shaft 4 is installed on the guide rail 15 through a slider 16. Then, through the cooperation of the guide rail 15 and the slider 16, the upper driven wheel shaft 4 moves up and down smoothly and is not easy to shake or get stuck.

[0029] The visual recognition device includes a camera 6 for identifying the hook joint on the metal monofilament 1; the camera 6 is preferably a fisheye camera, which can independently realize panoramic photography of a wide range without blind spots. More preferably, a 190° ultra-wide-angle fisheye lens is used.

[0030] The cutting mechanism is mounted on the frame 17 and has a cutter 8 for cutting off the hook joint on the metal monofilament 1. The cutting mechanism can adopt an existing mechanism for cutting metal wires, as long as it can quickly respond and cut off the metal monofilament 1. There is a pair of cutters 8, which cooperate to cut off the hook joint 7.

[0031] The driving wheel pair includes an upper driving wheel 9 and a lower driving wheel 10, wherein the upper driving wheel 9 is connected to the driving motor to rotate under the drive of the driving motor, the driving motor is mounted on the frame 17, and the lower driving wheel 10 is mounted on the frame 17 through the lower driving wheel shaft 11. There is a passage for passing the metal monofilament 1 between the upper driving wheel 9 and the lower driving wheel 10, so that the upper driving wheel 9 and the lower driving wheel 10 cooperate to pull the metal monofilament 1 forward. The outer rings of the upper driving wheel 9 and the lower driving wheel 10 are preferably provided with a rubber layer to secure the metal monofilament 1 and prevent the metal monofilament 1 from being worn. The lower driving wheel 10 is preferably rotatably mounted on the lower driving wheel shaft 11, so that there is rolling friction between the metal monofilament 1 and the lower driving wheel 1, which will not affect the normal advancement of the metal monofilament 1.

[0032] Furthermore, a return spring 14 is provided between the upper driven wheel shaft 4 and the frame 17 for returning the upper driven wheel 2 downward. Since the upper driven wheel 2 can return under the action of its own gravity, the elastic coefficient of the return spring 14 does not need to be too large, and only a relatively small elastic force is required. The setting of the return spring 14 can prevent the upper driven wheel 2 from jumping upward and hitting the metal monofilament 1 when the joint passes, thereby damaging the shape of the metal monofilament 1, so that the upper driven wheel 2 can always act on the metal monofilament 1 with a relatively gentle force.

[0033] Furthermore, a distance sensor 13 is provided on the upper driven wheel shaft 4 to obtain the vertical displacement of the upper driven wheel shaft 4. The distance sensor 13 is mainly used to know that the upper driven wheel 2 has moved upward, and send a signal to the controller 12, and the controller 12 can make the visual recognition device and the cutting mechanism ready to work, which plays a double insurance role.

[0034] Furthermore, the utility model also includes a plurality of guide wheels for supporting the metal monofilament 1 , which can not only support the metal monofilament 1 , but also guide the metal monofilament 1 to guide the movement of the metal monofilament 1 .

[0035] The driving wheel pair of the utility model mainly plays a traction role, and the driven wheel pair plays a role in pressing the metal monofilament 1. If there is a hook joint 7 of the metal monofilament 1, the upper driven wheel 2 will be offset and the distance sensor 13 will send a signal to the controller 12; the camera 6 is used to take a picture of the metal monofilament 1, and the picture is sent to the controller 12 for diameter analysis of the metal monofilament 1. If there is a hook joint 7, it is judged that the diameter of the metal monofilament 1 exceeds the standard, and the visual recognition device sends an alarm signal to the controller 12; the controller 12 comprehensively analyzes the position information of the upper driven wheel 2 and the diameter information of the metal monofilament 1, determines that there is a hook joint 7 on the metal monofilament 1, and sends a cutting instruction to the cutting mechanism, and the cutter 8 cuts off the hook joint 7. The entire online detection equipment is installed on the production line and cooperates with the twisting equipment on the production line.

[0036] In summary, the utility model can detect online whether there is a hook joint 7 on the metal monofilament 1 during the rewinding process. During the high-speed twisting process of the metal monofilament 1, when the visual recognition device detects that the metal monofilament 1 moving on the production line has a hook joint, the controller 12 quickly reduces the running speed of the twisting equipment and the production line and stops. The controller 12 controls the cutting mechanism to quickly cut off the hook joint 7 to prevent the hook joint 7 from moving to the twisting equipment, and avoid the hook joint 7 being disconnected on the twisting equipment, which causes the metal monofilament 1 to dance at high speed on the twisting equipment, thereby improving production safety. After the hook joint 7 on the metal monofilament is cut off, the two ends of the metal monofilament at the cut position can be welded together using welding equipment for reuse.

[0037] It is easy for those skilled in the art to understand that 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online detection device for hook joints of metal monofilaments, characterized in that: The invention comprises a frame, a driven wheel set, a visual recognition device, a cutting mechanism, a driving motor and a driving wheel set which are sequentially arranged along the advancing direction of the metal monofilament, wherein: The frame is provided with a vertical slideway; The driven wheel pair comprises an upper driven wheel and a lower driven wheel for clamping the metal monofilament, the upper driven wheel and the lower driven wheel are respectively mounted on the frame through an upper driven wheel shaft and a lower driven wheel shaft, and the upper driven wheel shaft is slidably mounted on the slideway so as to adjust the vertical position of the upper driven wheel; The visual recognition device includes a camera for identifying the hook joint on the metal monofilament; The cutting mechanism is installed on the frame, and the cutting mechanism has a cutter for cutting off the hook joint on the metal monofilament; The driving wheel pair includes an upper driving wheel and a lower driving wheel, the upper driving wheel is connected to the driving motor to rotate under the drive of the driving motor, the driving motor is installed on the frame, and the lower driving wheel is installed on the frame through a lower driving wheel shaft. There is a channel for passing the metal monofilament between the upper driving wheel and the lower driving wheel, so that the upper driving wheel and the lower driving wheel cooperate to pull the metal monofilament forward.

2. The on-line detection device for the hook joint of a metal monofilament according to claim 1 is characterized in that: A return spring for returning the upper driven wheel downward is arranged between the upper driven wheel shaft and the frame.

3. The on-line detection device for the hook joint of a metal monofilament according to claim 1 is characterized in that: The upper driven wheel shaft is provided with a distance sensor for obtaining the vertical displacement of the upper driven wheel shaft.

4. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: Also included are a plurality of guide wheels for supporting the metal monofilaments.

5. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The camera is a fisheye camera.

6. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The outer rings of the upper driven wheel and the lower driven wheel are both provided with rubber layers.

7. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The outer rings of the upper driving wheel and the lower driving wheel are both provided with rubber layers.

8. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The slideway is a guide rail, and the upper driven wheel shaft is installed on the guide rail through a sliding block.

9. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The upper driven wheel is rotatably mounted on the upper driven wheel shaft, and the lower driven wheel is rotatably mounted on the lower driven wheel shaft.

10. The on-line detection device for hook joints of metal monofilaments according to claim 1, characterized in that: The lower driving wheel is rotatably mounted on the lower driving wheel shaft.

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