Cable protection tube tubular sample preparation device and control method

Abstract

The invention belongs to the technical field of cable detection, and particularly relates to a cable protection pipe tubular sample preparation device and a control method.The preparation device comprises a feeding mechanism, a cutting mechanism, a pressing mechanism, a sorting mechanism, a detection mechanism and a centralized control system.The feeding mechanism is used for conveying a cable protection pipe to the cutting mechanism; the sorting mechanism is used for sorting the cut tubular samples, discarding the samples at the head section and the tail section and transferring the samples at the middle section to the detection mechanism, the detection mechanism is used for detecting the lengths of the samples and feeding back the lengths to the centralized control system, and the centralized control system is used for judging whether the lengths of the samples are qualified or not; and dynamically adjusting the feeding length of the feeding mechanism according to the deviation between the length of the sample and the target length of the sample. According to the invention, through automation, self-adaptive adjustment and high-precision cutting technologies, full-automatic feeding, cutting, sorting and measuring of the cable protection pipe are realized, manual intervention is reduced, and the efficiency and precision of cable protection pipe sample preparation are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of cable testing technology, specifically relating to a device and control method for preparing tubular samples of cable protection pipes. Background Technology

[0002] Power cables are critical channels for transmitting urban electricity, and cable protection pipes are important physical barriers protecting power cables from external damage. Conducting quality inspections on cable protection pipes is a crucial measure to ensure the safe operation of cables.

[0003] Cable protection pipe testing requires initial processing into tubular and sheet-like samples. Traditional cable protection pipe cutting operations involve 2-3 operators manually operating a cutting machine, resulting in slow processing speed, high labor intensity, and significant safety risks. The prepared samples often exhibit errors in pipe length due to manual positioning deviations, directly impacting subsequent testing. Traditional cutting and sample preparation methods cannot meet the demands of modern society's digital transformation. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of slow speed, high intensity, and large error in manual sample preparation in the prior art, and to provide a device and control method for preparing tubular samples of cable protection pipes.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a cable protection pipe tubular sample preparation device, comprising:

[0006] A feeding mechanism is used to transport the cable protection tube to the cutting mechanism;

[0007] The clamping mechanism includes a second clamping component, and a first clamping component and a third clamping component that are slidably disposed on the left and right sides of the second clamping component, and there is a cutting space between the third clamping component and the second clamping component for the cutting mechanism to complete the cutting action;

[0008] The sorting mechanism is used to sort the cut tubular samples, discard the first and last sections of the sample, and transfer the middle section of the sample to the testing mechanism.

[0009] The detection mechanism is used to detect the sample length and feed it back to the centralized control system. The centralized control system is used to determine whether the sample length is a qualified sample and to dynamically adjust the feeding length of the feeding mechanism according to the deviation between the sample length and the target sample length.

[0010] Preferably, the feeding mechanism includes a base and a slide rail disposed on the base and slidably engaged with the first pressing component, wherein the first pressing component can slide horizontally left and right along the slide rail under the action of a motor and a lead screw.

[0011] Preferably, the base is further provided with a conveying roller corresponding to the first pressing component, and the second pressing component is fixedly disposed at one end of the base near the cutting mechanism.

[0012] Preferably, the third clamping component is slidably disposed between the cutting mechanism and the sorting mechanism, and the first clamping component, the second clamping component and the third clamping component are all disposed on the same straight line.

[0013] Preferably, the cutting mechanism includes a mounting base and an electric saw assembly electrically connected to the control system and mounted on the mounting base. The electric saw assembly can provide corresponding cutting parameters according to the different materials of the cable protection pipe. The cutting parameters include rotational speed and feed rate.

[0014] Preferably, the first clamping assembly, the second clamping assembly, and the third clamping assembly all include a support frame and a pressure plate movably mounted on the support frame, wherein the pressure plate can move up and down under the action of a cylinder and a guide column.

[0015] Preferably, the sorting mechanism includes a sample conveyor belt, a hook plate, and a pusher plate. One end of the sample conveyor belt is connected to a third pressing component via a discharge plate, and the other end is provided with a movable baffle. The hook plate can extend and retract left and right to hook the sample from the discharge plate to the sample conveyor belt. The pusher plate is located on one side of the sample conveyor belt, and the pushing direction of the pusher plate is perpendicular to the movement direction of the sample conveyor belt, to push the middle section of the sample on the sample conveyor belt to the testing mechanism.

[0016] Preferably, the testing mechanism includes a sample stage, and push-pull plates and positioning plates disposed on the left and right sides of the sample stage. The push-pull plates can be used to attach both ends of the sample to the push-pull plates and positioning plates respectively under the action of a push-pull cylinder. The push-pull cylinder is electrically connected to the centralized control system.

[0017] A control method for the above-mentioned cable protection tube tubular sample preparation device includes dynamic adjustment of the feeding length, as follows:

[0018] When processing the first sample, accurately measure the cutting loss Ld of the sample of this specification, and calculate the number of servo motor control pulses corresponding to the feeding length using the following formula:

[0019]

[0020] Where: P pitch P is the lead screw pitch; res G is the encoder resolution; L is the gear ratio. t The target length of the sample.

[0021] After adopting the above technical solution, the cable protection pipe tubular sample preparation device and control method provided by the present invention have the following beneficial effects:

[0022] This invention achieves fully automated feeding, cutting, sorting, and measurement of cable protection tubes through automation, adaptive adjustment, and high-precision cutting technology. It reduces manual intervention, requiring only operators to load samples, significantly improving the efficiency and accuracy of cable protection tube sample preparation while reducing human intervention errors and material waste. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a cable protection tube tubular sample preparation device according to the present invention;

[0024] Figure 2 This is a schematic diagram of the sorting mechanism and the detection mechanism in this invention;

[0025] Figure 3 for Figure 2 A structural diagram from another perspective.

[0026] The components include: feeding mechanism 1, base 11, slide rail 12, motor 13, lead screw 14, conveyor roller 15, cutting mechanism 2, mounting base 21, electric saw assembly 22, clamping mechanism 3, first clamping assembly 31, second clamping assembly 32, third clamping assembly 33, sorting mechanism 4, sample conveyor belt 41, hook plate 42, push plate 43, discharge plate 44, movable baffle 45, detection mechanism 5, sample stage 51, push-pull plate 52, positioning plate 53, push-pull cylinder 54, and centralized control system 6. Detailed Implementation

[0027] The present invention will now be described more clearly and completely with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0031] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0033] like Figure 1-3As shown, the present invention provides a cable protection tube tubular sample preparation device, including a feeding mechanism 1, a cutting mechanism 2, a pressing mechanism 3, a sorting mechanism 4, a testing mechanism 5, and a centralized control system 6.

[0034] The feeding mechanism 1 is used to transport the cable protection tube to the cutting mechanism 2. Specifically, it includes a base 11 and a conveying roller 15 set on the base 11. In order to cooperate with the conveying roller 15 to achieve a better feeding effect, a first pressing component 31 is also slidably provided on the base 11. The first pressing component 31 is slidably engaged with the slide rail 12 on the base 11 and can slide horizontally left and right along the slide rail 12 under the action of the motor 13 and the lead screw 14.

[0035] The clamping mechanism 3 also includes a second clamping component 32 and a third clamping component 33 arranged sequentially on the same straight line as the first clamping component 31. The second clamping component 32 is fixedly disposed at one end of the base 11 near the cutting mechanism 2. The first clamping component 31 is located to the left of the second clamping component 32 and is slidably connected to the base 11. The third clamping component 33 is located to the right of the second clamping component 32 and is slidably disposed between the cutting mechanism 2 and the sorting mechanism 4. Furthermore, the first clamping component 31, the second clamping component 32 and the third clamping component 33 each include a support frame and a pressure plate movably disposed on the support frame. The pressure plate can move up and down under the action of the cylinder and the guide column. There is a cutting space between the second clamping component 32 and the third clamping component 33 for the cutting mechanism 2 to complete the cutting action.

[0036] The cutting mechanism 2 includes a mounting base 21 and an electric saw assembly 22 electrically connected to the centralized control system 6, which is mounted on the mounting base 21. The electric saw assembly 22 can provide corresponding cutting parameters according to the different materials of the cable protection pipe. The cutting parameters include rotational speed and feed rate. Taking CPVC and MPP materials as examples, for CPVC material samples, a rotational speed of 4200 rpm and a feed rate of 5 m / min are selected; for MPP material samples, a rotational speed of 4300 rpm and a feed rate of 7 m / min are selected. In addition, the feed position selected is different for pipes with different diameters. Specifically, a pipe with a diameter of 100 mm is selected at a feed position of 210 mm; a pipe with a diameter of 150 mm is selected at a feed position of 240 mm; and a pipe with a diameter of 200 mm is selected at a feed position of 285 mm. All of the above are automatically selected by the centralized control system 6, which can ensure the efficiency and accuracy of the cutting process.

[0037] Furthermore, the specific parameters of the saw blade in this embodiment are as follows: diameter of 950 mm, blade thickness of 5.5 mm, blade tip thickness of 7.0 mm, number of teeth of 120T, a combination of 3 alternating beveled teeth and 2 flat teeth, with a front angle of 12° and a back angle of 18°. In this way, both chip removal effect and cutting quality can be taken into account at the same time, and the cutting surface is flat and of good quality.

[0038] The sorting mechanism 4 is used to sort the cut tubular samples, discarding the first and last sections of the sample and transferring the middle section of the sample to the testing mechanism 5. Specifically, the sorting mechanism 4 includes a sample conveyor belt 41, a hook plate 42, and a pusher plate 43. One end of the sample conveyor belt 41 is connected to the third pressing component 33 through the discharge plate 44, and the other end is provided with a movable baffle 45. The hook plate 42 can move left and right to hook the sample from the discharge plate 44 to the sample conveyor belt 41. The hook plate 42 can also be flexibly replaced according to the sample length. The pusher plate 43 is set on one side of the sample conveyor belt 41, and the pushing direction of the pusher plate 43 is perpendicular to the movement direction of the sample conveyor belt 41. It is used to push the middle section of the sample on the sample conveyor belt 41 to the testing mechanism 5.

[0039] The detection mechanism 5 is used to detect the sample length and provide feedback to the centralized control system 6. Specifically, the detection mechanism 5 includes a sample stage 51, and push-pull plates 52 and positioning plates 53 arranged on the left and right sides of the sample stage 51. The push-pull plates 52 can move towards the positioning plates 53 under the action of the push-pull cylinder 54, so that the two ends of the sample are respectively attached to the push-pull plates 52 and the positioning plates 53. The push-pull cylinder 54 is electrically connected to the centralized control system 6, and the centralized control system 6 can calculate the sample length based on the extension length of the push-pull cylinder 54.

[0040] The centralized control system 6 is used to determine whether the sample length is a qualified sample, and to dynamically adjust the feeding length of the feeding mechanism 1 according to the deviation between the sample length and the target sample length. Specifically, the centralized control system 6 includes a position sensor, a status sensor and a PLC controller. The centralized control system 6 can collect the status information of each mechanism in real time through the position sensor and status sensor, automatically obtain the cutting loss, calculate the feeding length, and control the feeding mechanism 1, the cutting mechanism 2 and the sorting mechanism 4 to carry out continuous cutting and conveying of the sample.

[0041] The working principle of the cable protection tube tubular sample preparation device provided by the present invention is as follows: The cable protection tube to be processed is placed on the feeding mechanism 1. The first clamping component 31 and the third clamping component 33 are both located to the left of their moving range. One end of the cable protection tube to be processed extends through the first clamping component 31 towards the second clamping component 32 and the third clamping component 33. The cable protection tube to be processed is clamped by the first clamping component 31. Under the action of the motor 13 and the lead screw 14, the cable protection tube to be processed is driven to move to the right by the corresponding feeding length. At this time, the second clamping component 32 and the third clamping component 33 simultaneously press downward, and the cutting is started. In this way, clamping components are provided on both sides of the cutting surface, which can ensure the stability of the cutting effect. After the cutting is completed, the second clamping component... Release 32, the third clamping component 33 drives the cut sample to move to the right to the discharge plate 44 and then releases it again. The hook plate 42 hooks the sample to the sample conveyor belt 41. At the same time, the third clamping component 33 resets to the left, and the first clamping component 31 repeats the above process, that is, it drives the cable protection tube to move to the right for the corresponding feeding length for cutting. The sample entering the sample conveyor belt 41 continues to move to the right under the drive of the sample conveyor belt 41. The first section of the sample moves directly to the far right and is discarded by the movable baffle 45. The middle section of the sample is pushed to the sample stage 51 by the pusher plate 43 for measurement. Qualified samples continue to the next process, and unqualified samples are discarded. The same operation is performed until the last section of the sample, which moves directly to the far right and is discarded by the movable baffle 45, just like the first section of the sample.

[0042] The present invention also provides a control method for the above-mentioned cable protection tube tubular sample preparation device, including dynamic adjustment of the feeding length, as follows:

[0043] When processing the first sample, accurately measure the cutting loss L of the sample of this specification. d The number of servo motor control pulses corresponding to the feeding length is calculated using the following formula:

[0044]

[0045] Where: P pitch P is the lead screw pitch; res G is the encoder resolution; L is the gear ratio. t The target length of the sample.

[0046] Due to sample length L S =L a -L d , where L a L represents the actual feeding length. d For cutting loss, the sampling deviation D = L t -L s , where L t L represents the target length of the sample.s For the sample length, therefore, L t +L d =D+L a This allows the number of servo motor control pulses corresponding to the feeding length to be adjusted according to the deviation, which in turn allows the rotation of motor 13 to be adjusted, thereby optimizing the actual feeding length of the sample tube.

[0047] In summary, the cable protection pipe tubular sample preparation device and control method provided by the present invention realizes fully automatic feeding, cutting, sorting and measurement of cable protection pipes through automation, adaptive adjustment and high-precision cutting technology, reducing manual intervention. Only operators need to feed the samples, which significantly improves the efficiency and accuracy of cable protection pipe sample preparation, while reducing manual intervention errors and material loss.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for preparing tubular samples of cable protection pipes, characterized in that, include: Feeding mechanism (1), the feeding mechanism (1) is used to transport the cable protection tube to the cutting mechanism (2); The clamping mechanism (3) includes a second clamping component (32), and a first clamping component (31) and a third clamping component (33) slidably disposed on the left and right sides of the second clamping component (32), and there is a cutting space between the third clamping component (33) and the second clamping component (32) for the cutting mechanism (2) to complete the cutting action; The sorting mechanism (4) is used to sort the tubular samples that have been cut, discard the first and last samples, and transfer the middle samples to the testing mechanism (5). The detection mechanism (5) is used to detect the sample length and feed it back to the centralized control system (6). The centralized control system (6) is used to determine whether the sample length is a qualified sample and to dynamically adjust the feeding length of the feeding mechanism (1) according to the deviation between the sample length and the target sample length.

2. The cable protection pipe tubular sample preparation device according to claim 1, characterized in that: The feeding mechanism (1) includes a base (11) and a slide rail (12) disposed on the base (11) and slidingly engaged with the first pressing component (31). The first pressing component (31) can slide horizontally left and right along the slide rail (12) under the action of the motor (13) and the lead screw (14).

3. The cable protection pipe tubular sample preparation device according to claim 2, characterized in that: The base (11) is also provided with a conveying roller (15) corresponding to the first pressing component (31), and the second pressing component (32) is fixedly disposed at one end of the base (11) near the cutting mechanism (2).

4. The cable protection pipe tubular sample preparation device according to claim 1, characterized in that: The third pressing component (33) is slidably disposed between the cutting mechanism (2) and the sorting mechanism (4), and the first pressing component (31), the second pressing component (32) and the third pressing component (33) are all disposed on the same straight line.

5. The cable protection pipe tubular sample preparation device according to claim 1, characterized in that: The cutting mechanism (2) includes a mounting base (21) and an electric saw assembly (22) electrically connected to the central control system (6) on the mounting base (21). The electric saw assembly (22) can provide corresponding cutting parameters according to the different materials of the cable protection pipe. The cutting parameters include rotational speed and feed rate.

6. The cable protection tube tubular sample preparation device according to claim 1, characterized in that: The first clamping assembly (31), the second clamping assembly (32) and the third clamping assembly (33) all include a support frame and a pressure plate movably mounted on the support frame. The pressure plate can move up and down under the action of the cylinder and the guide column.

7. The cable protection pipe tubular sample preparation device according to claim 1, characterized in that: The sorting mechanism (4) includes a sample conveyor belt (41), a hook plate (42), and a pusher plate (43). One end of the sample conveyor belt (41) is connected to the third pressing component (33) through a discharge plate (44), and the other end is provided with a movable baffle (45). The hook plate (42) can move left and right to hook the sample from the discharge plate (44) to the sample conveyor belt (41). The pusher plate (43) is set on one side of the sample conveyor belt (41), and the pushing direction of the pusher plate (43) is perpendicular to the movement direction of the sample conveyor belt (41). It is used to push the middle section of the sample on the sample conveyor belt (41) to the detection mechanism (5).

8. The cable protection pipe tubular sample preparation device according to claim 1, characterized in that: The testing mechanism (5) includes a sample stage (51), and push-pull plates (52) and positioning plates (53) set on the left and right sides of the sample stage (51). The push-pull plates (52) can attach the two ends of the sample to the push-pull plates (52) and positioning plates (53) respectively under the action of the push-pull cylinder (54). The push-pull cylinder (54) is electrically connected to the central control system (6).

9. A control method for the cable protection tube tubular sample preparation apparatus according to any one of claims 1-8, characterized in that, This includes dynamic adjustment of the feeding length, as detailed below: When processing the first sample, accurately measure the cutting loss L of the sample of this specification. d The number of servo motor control pulses corresponding to the feeding length is calculated using the following formula: Where: P pitch P is the lead screw pitch; res G is the encoder resolution; L is the gear ratio. t The target length of the sample.

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