Sample milling device and method for cable protection pipe

Abstract

The invention relates to the field of industrial product sample preparation, in particular to the technical field of cable protection pipe sample preparation, and more particularly relates to a cable protection pipe sample milling device which comprises a cable protection pipe supporting mechanism, a cable protection pipe fixing mechanism, a clamping mechanism and a milling mechanism. By adopting the cable protection pipe sample milling device disclosed by the invention, full-automatic sample milling can be realized, and the characteristics of automation, high precision and high stability are realized. Meanwhile, in the technical scheme disclosed by the invention, the cable protection tube only needs to be manually placed on the transfer clamping seat, so that automatic transplanting, grabbing and milling can be realized, and a detection sample meeting the sample precision and standard requirements is obtained. And the labor cost is greatly saved. And by matching with subsequent grinding, cleaning and drying devices, full-automatic, high-standard, high-precision and high-efficiency sample preparation can be realized.

Description

Technical Field

[0001] The invention relates to the field of cable protection tube sampling, in particular to a cable protection tube sampling device and method. Background Art

[0002] Cable protection tubes are important facilities in the power system. Their quality and performance are directly related to the safe operation and life of the cables. Therefore, it is very necessary to test cable protection tubes.

[0003] In order to test the performance of cable protection tubes, it is necessary to conduct appearance quality inspection, size inspection, thermal shrinkage rate and other performance inspections on cable protection tube samples to meet the existing cable storage performance inspection requirements specified in DL / T 802.3-2007 and DL / T 802.7-2010. At the same time, according to national standards such as GB / T 1633-2000 "Determination of Vicat Softening Temperature (VST) of Thermoplastics", GB / T 8804.3-2003 "Determination of Tensile Properties of Thermoplastic Pipes Part 3: Polyolefin Pipes", GB / T 9647-2015 "Determination of Ring Stiffness of Thermoplastic Pipes", and GB / T 8806-2008 "Determination of Dimensions of Plastic Components of Plastic Pipe Systems", plastic cable protection pipes need to meet the requirements of compressive strength, tensile strength, flexural strength, impact resistance, environmental stress cracking resistance, heat resistance, low temperature resistance, chemical corrosion resistance, aging resistance, insulation, flame retardancy and other performance requirements.

[0004] The testing of these items all requires cutting of the cable protection tube to prepare test samples that can match the testing equipment.

[0005] Currently, the existing technology usually adopts the manual cutting method, but this method has the problems of low cutting accuracy, low production efficiency, and difficulty in ensuring the consistency and uniformity of each batch of samples. This causes the test results to be affected by human subjective factors and makes the test results reproducible, unable to provide reliable data support for product quality monitoring, and difficult to meet the increasingly stringent industry standards. Summary of the invention

[0006] Based on the above problems, the object of the present invention is to provide a cable protection tube sample milling device and method, so as to fully automatically realize the accurate milling of samples for testing on the cable protection tube, so as to realize the full automation of cable protection tube sample milling.

[0007] In order to achieve the above-mentioned object of the invention, on the one hand, the present invention provides a cable protection tube milling device, comprising a box body, on which a loading mechanism, a supporting mechanism, a fixing mechanism, a clamping mechanism and a milling mechanism are provided; The supporting mechanism comprises a chuck, and a plurality of claws are provided on the chuck to move the cable protection tube to the chuck; the fixing mechanism comprises a plurality of clamping rollers provided on one side of the chuck, and the claws slide radially along the chuck to clamp one end of the cable protection tube, and the other end of the cable protection tube is clamped by the clamping rollers; The milling mechanism includes a milling cutter and a milling cutter drive system, and the milling cutter drive system drives the milling cutter to move along the X, Y, and Z axis directions of the cable protection tube to mill the sample; a clamping mechanism is provided on one side of the clamping roller, and the clamping mechanism includes an upper clamping plate and a lower clamping plate. A second driving mechanism is provided near the clamping mechanism on the box body, and the second driving mechanism drives the clamping mechanism to slide and drive the upper clamping plate and the lower clamping plate to clamp the sample after milling by the milling cutter and transport it to the next workstation.

[0008] Preferably, the clamping roller is arranged on a clamping roller fixing seat, and the clamping roller is rotatably connected to the clamping roller fixing seat; the clamping roller fixing seat is provided with a first driving mechanism fixed to the clamping roller, the first driving mechanism includes a guide rail, a guide block, and a first linear module, the guide block is arranged at the bottom of the clamping roller fixing seat, and the clamping roller fixing seat is slidably connected to the guide rail through the guide block; the first linear module drives the clamping roller fixing seat to slide along the guide rail for clamping the cable protection tube.

[0009] Preferably, the clamping mechanism also includes a rotating disk, a clamping plate fixing seat is provided on the rotating disk, and an upper clamping plate and a lower clamping plate are arranged on the clamping plate fixing seat; a second driving mechanism is provided on the box body near the clamping mechanism, and the second driving mechanism drives the clamping mechanism to slide and drives the upper clamping plate and the lower clamping plate to move toward or away from each other in a vertical direction for clamping the sample after milling by the milling cutter.

[0010] Preferably, the box body is provided with a transfer card seat, the transfer card seat is provided with a card slot, and the cable protection tube is clamped in the card slot; Preferably, the loading mechanism includes a grabbing claw, a movable arm and a bracket thereof, the grabbing claw is slidably connected to the movable arm, a second linear module is provided on the bracket, and the second linear module drives the movable arm to slide and drives the grabbing claw to grab the cable protection tube in the card slot and move it to the chuck.

[0011] Preferably, a crossbeam is provided on the movable arm, and a left claw and a right claw are provided at both ends of the crossbeam, and the left claw and the right claw move towards each other to clamp the cable protection tube.

[0012] Preferably, a clamp and a platform are provided at the bottom of the clamping claw, and the clamp and the platform include a first clamp and a platform, a second clamp and a platform and a third clamp and a platform, and the inner diameters of the first clamp and the platform, the second clamp and the platform and the third clamp and the platform decrease gradually.

[0013] Preferably, the clamping roller 4 includes a first clamping roller, a second clamping roller, a third clamping roller and a fourth clamping roller, the first clamping roller and the second clamping roller are fitted to the middle of the cable protection tube, and the third clamping roller and the fourth clamping roller are fitted to a position near the bottom of the cable protection tube.

[0014] Preferably, a material storage box is provided in the box body, and a movable baffle is provided between the fixing mechanism and the clamping mechanism; a part of the cable protection tube is clamped by the clamping mechanism for the milled sample, and the other part falls into the material storage box in the box body through the movable baffle.

[0015] In a second aspect, the present invention provides a cable protection tube milling method, the method comprising the following steps: The grabbing claw of the loading mechanism grabs the cable protection tube from the card slot of the transfer card seat; The movable arm moves it to above the chuck of the support mechanism, and multiple claws of the support mechanism slide radially along the chuck to clamp and fix one end of the cable protection tube; The first linear module drives the clamping roller fixing seat to slide along the guide rail to drive the clamping roller 4 to clamp the other end of the cable protection tube; The milling cutter driving system of the milling mechanism drives the milling cutter to move along the X, Y, and Z axis directions of the cable protection tube to mill the cable protection tube; The second driving mechanism drives the clamping mechanism to slide and drives the upper clamping plate and the lower clamping plate to clamp the sample milled by the milling cutter and transport it to the next station.

[0016] In a third aspect, the present invention also discloses a fully automatic sample preparation line including the above-mentioned cable protection tube sample milling device. The line is connected by a plurality of workstations that perform different tasks. The cable protection tube sample milling device disclosed in the present invention is combined with any automatic device with grinding, cleaning, and drying functions to realize fully automatic sample preparation.

[0017] Beneficial effects: The chuck of the supporting mechanism is provided with a plurality of claws, which slide radially along the chuck and can firmly clamp one end of the cable protection tube; the plurality of clamping rollers of the fixing mechanism are fitted with the other end of the cable protection tube, and the clamping roller fixing seat is driven to slide along the guide rail through the first linear module, which further enhances the stability of the clamping and ensures that the cable protection tube will not be displaced or rotated during the milling process, thereby ensuring the milling quality; in addition, a clamp and table are provided at the bottom of the clamping claw, including a first clamp and table, a second clamp and table and a third clamp and table, with decreasing inner diameters, which can adapt to cable protection tubes of different diameters; the clamping rollers include a first clamping roller, a second clamping roller, a third clamping roller and a fourth clamping roller, which respectively fit with the middle part and near the bottom of the cable protection tube, thereby enhancing the adaptability of the device to cable protection tubes of different specifications and expanding the scope of application.

[0018] (2) The milling cutter drive system of the milling mechanism can drive the milling cutter to move along the X, Y, and Z axes of the cable protection tube, realizing all-round and multi-angle milling. With the high-precision drive system, it can accurately control the milling depth and shape to meet the milling requirements of different samples and improve the processing accuracy of the samples. The upper clamping plate and the lower clamping plate of the clamping mechanism move toward or away from each other in the vertical direction under the drive of the second drive mechanism, which can quickly clamp the milled sample and smoothly transport it to the next station, avoiding the sample from falling or being damaged during transportation, and ensuring the continuity and smoothness of the production process.

[0019] (3) The present invention integrates a loading mechanism, a supporting mechanism, a fixing mechanism, a clamping mechanism and a milling mechanism. From loading to milling to sample transportation, the entire process does not require human intervention and has a high degree of automation. Combined with subsequent polishing, cleaning and drying devices, it can achieve fully automated, high-standard, high-precision and high-efficiency sample preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the cable protection tube milling device from the left perspective.

[0021] Figure 2 This is a schematic diagram of the cable protection tube milling device from a top view.

[0022] Figure 3 It is a partial schematic diagram of the cable protection tube milling device from a three-dimensional perspective.

[0023] Figure 4 It is a schematic diagram of the cable protection tube support mechanism and the cable protection tube fixing mechanism for the cable protection tube.

[0024] Figure 5 It is a schematic diagram showing another perspective of the cable protection tube support mechanism and the cable protection tube fixing mechanism on the cable protection tube fixing position.

[0025] Figure 6 It is a schematic diagram of the coordination between the clamping roller and the cable protection tube.

[0026] Figure 7 Schematic diagram of the clamping mechanism.

[0027] Figure 8 This is a local schematic diagram of the milling area.

[0028] 1-chuck; 2-claw; 3-clamping platform; 301-first clamping platform; 302-second clamping platform; 303-third clamping platform; 4-clamping roller; 401-first clamping roller; 402-second clamping roller; 403-third clamping roller; 404-fourth clamping roller, 5-clamping roller fixing seat; 6-clamping roller moving groove; 7-upper clamping plate; 8-lower clamping plate; 9-clamping plate fixing seat; 10 -rotating disc; 11-milling cutter; 12-milling cutter fixing seat; 13-milling cutter driving system; 14-transfer card seat; 15-grabbing claw; 1501-left claw; 1502-right claw; 16-card slot; 17-movable arm; 18-bracket; 19-box; 20-guide block; 21-first linear module; 22-guide rail; 23-second linear module; 24-cylinder; 25-movable baffle.

[0029] Reference numerals have been added in blue. Please add yellow marks and delete 1401, 1402, and 1403. DETAILED DESCRIPTION

[0030] In order to better understand the present invention, the present invention is further described below in conjunction with specific embodiments. Example 1

[0031] like Figures 1 to 7 The cable protection tube milling device shown in the figure comprises: a box body 19, on which a loading mechanism, a supporting mechanism, a fixing mechanism, a clamping mechanism and a milling mechanism are provided; a transfer card seat 14 is provided on the box body 19, and a card slot 16 is provided on the transfer card seat 14, and the cable protection tube is clamped in the card slot 16; The loading mechanism includes a grabbing claw 15, a movable arm 17 and a bracket 18, the grabbing claw 15 is slidably connected to the movable arm 17, a crossbeam 1503 is provided on the movable arm 17, and a left claw 1501 and a right claw 1502 are provided at both ends of the crossbeam 1503, the left claw 1501 and the right claw 1502 move towards each other to clamp the cable protection tube; a second linear module 23 is provided on the bracket 18, the second linear module 23 drives the movable arm 17 to slide and drives the grabbing claw 15 to grab the cable protection tube in the card slot 16 and move it to the chuck 1.

[0032] The support mechanism comprises a chuck 1, on which a plurality of claws 2 are arranged. In this embodiment, the number of the claws is three, and the claws are arranged at equal intervals. Figure 5As shown, the claws are arranged along the radial direction of the chuck and are spaced 120 degrees apart. The three claws can move toward the center of the chuck (inward) or away from the center of the chuck (outward) at the same time. When the claws move toward the center of the chuck (inward) at the same time, the claws form a gathered state. When the claws move away from the center of the chuck (outward) at the same time, the claws form a divergent state. Further combined Figure 5 And the description of the movement state of the three claws. When the three claws are in the gathered state, the cable protection tube is put on the outside of the three claws, and then the three claws move outward at the same time. When they move to completely fit the inner wall of the cable protection tube, they stop moving. At this time, the cable protection tube is affected by the claws to form a unified overall force structure. When the chuck rotates, it drives the claws to rotate, and further drives the cable protection tube to rotate, providing a basis for milling multiple specimens with one sample.

[0033] The loading mechanism moves the cable protection tube to the chuck 1; a clamp and table 3 is provided at the bottom of the clamping claw 2, and the clamp and table 3 includes a first clamp and table 301, a second clamp and table 302 and a third clamp and table 303. The inner diameters of the first clamp and table 301, the second clamp and table 302 and the third clamp and table 303 decrease gradually, and can adapt to cable protection tubes of different diameters; The fixing mechanism includes a plurality of clamping rollers 4 arranged on one side of the chuck 1, and the clamping rollers 4 include a first clamping roller 401, a second clamping roller 402, a third clamping roller 403 and a fourth clamping roller 404. The first clamping roller 401 and the second clamping roller 402 are fitted with the middle part of the cable protection tube, and the gaps between the first clamping roller 401 and the second clamping roller 402 and between the third clamping roller 403 and the fourth clamping roller 404 form a clamping roller moving groove 6, which can better fit with the surface of the cable protection tube to ensure the stability and firmness of the clamping; the third clamping roller 403 and the fourth clamping roller 404 are fitted with a position near the bottom of the cable protection tube. The clamping roller 4 is arranged on the clamping roller fixing seat 5, and the clamping roller 4 is rotatably connected to the clamping roller fixing seat 5; the clamping roller fixing seat 5 is provided with a first driving mechanism fixed to the clamping roller, and the first driving mechanism includes a guide rail 22, a guide block 20, and a first linear module 21. The guide block 20 is arranged at the bottom of the clamping roller fixing seat 5, and the clamping roller fixing seat 5 is slidably connected to the guide rail 21 through the guide block 20; the first linear module 21 drives the clamping roller fixing seat 5 to slide along the guide rail 21 to clamp the cable protection tube; the clamping claw 2 slides radially along the chuck 1 to clamp one end of the cable protection tube, and the other end of the cable protection tube is clamped by the clamping roller 4; The milling mechanism includes a milling cutter 11 and a milling cutter drive system 13. The milling cutter drive system 13 drives the milling cutter 11 to move along the X, Y, and Z axis directions of the cable protection tube to perform milling. The milling cutter 11 is fixed to the milling cutter fixing seat 12 by a high-precision grinding screw. The milling cutter drive system 13 adopts a high-precision planetary gear reducer in conjunction with a servo motor, thereby enabling high-precision, high-torque, and stable axial movement of the equipment.

[0034] A clamping mechanism is provided on one side of the clamping roller 4, and the clamping mechanism includes an upper clamping plate 7 and a lower clamping plate 8. The upper clamping plate 7 and the lower clamping plate 8 can move toward or away from each other in the vertical direction. When they move toward each other, the distance between them is infinitely reduced, thereby forming a clamping state. When they move away from each other, the distance between them increases, thereby forming a loose functional state. Figure 7 It can be understood that the clamping mechanism can be clamped at the end of the cable protection tube, and then the milling cutter mills the sample here. After the sample is milled, it is clamped on the mechanism by the clamping mechanism and separated from the remaining part of the cable protection tube.

[0035] The box 19 is provided with a second driving mechanism near the clamping mechanism, and the second driving mechanism drives the clamping mechanism to slide and drive the upper clamping plate 7 and the lower clamping plate 8 to clamp the sample after milling by the milling cutter 11 and transport it to the next station. The clamping mechanism also includes a rotating disk 10, and the rotating disk 10 is provided with a clamping plate fixing seat 9, and the upper clamping plate 7 and the lower clamping plate 8 are arranged on the clamping plate fixing seat 9; the box 19 is provided with a second driving mechanism near the clamping mechanism, and the second driving mechanism drives the clamping mechanism to slide and drive the upper clamping plate 7 and the lower clamping plate 8 to move toward or away from each other in the vertical direction to clamp the sample after milling by the milling cutter 11. In this embodiment, the sample size after milling by the milling cutter 11 has two specifications, which are 50mm×150mm and 10mm×140mm respectively.

[0036] A material storage box is provided in the box body 19 , and a movable baffle 25 is provided between the fixing mechanism and the clamping mechanism. A part of the cable protection tube is clamped by the clamping mechanism for the milled sample, and the other part falls into the material storage box in the box body 19 through the movable baffle 25 .

[0037] The present invention integrates a loading mechanism, a supporting mechanism, a fixing mechanism, a clamping mechanism and a milling mechanism. From loading to milling to sample transportation, the entire process does not require human intervention and has a high degree of automation. Combined with subsequent polishing, cleaning and drying devices, it can achieve fully automated, high-standard, high-precision and high-efficiency sample preparation. Example 2

[0038] The embodiment of the present invention provides a cable protection tube sample milling method, which is implemented by the cable protection tube sample milling device in embodiment 1. The method comprises the following steps: The grabbing claw 15 of the loading mechanism grabs the cable protection tube from the card slot 16 of the transfer card seat 14; The movable arm 17 moves it to above the chuck 1 of the support mechanism, and the multiple claws 2 of the support mechanism slide radially along the chuck 1 to clamp and fix one end of the cable protection tube; The first linear module 21 drives the clamping roller fixing seat 5 to slide along the guide rail 21 to drive the clamping roller 4 to clamp the other end of the cable protection tube; The milling cutter drive system 13 of the milling mechanism drives the milling cutter 11 to move along the X, Y, and Z axis directions of the cable protection tube to mill the cable protection tube; The second driving mechanism drives the clamping mechanism to slide and drives the upper clamping plate 7 and the lower clamping plate 8 to clamp the sample milled by the milling cutter 11 and transport it to the next station. Example 3

[0039] An embodiment of the present invention provides a fully automatic sample preparation line for a cable protection tube milling device, which is realized by the cable protection tube milling device in Example 1. The line is composed of a plurality of workstations that perform different tasks. The cable protection tube milling device disclosed in the present invention is combined with any automated device with grinding, cleaning, and drying functions to realize fully automatic line sample preparation.

[0040] In this field, the milled sample needs to be polished by a polishing device, cleaned by a cleaning device, and dried by a drying device in sequence before it can be used as a sample for testing.

[0041] The grinding, cleaning and drying devices can be combined with the devices with these functions in the prior art to form an assembly line, thereby completing fully automatic sample preparation.

[0042] The above is a specific implementation of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A cable protection tube milling device, characterized in that: It comprises a box body (19), on which a loading mechanism, a supporting mechanism, a fixing mechanism, a clamping mechanism and a milling mechanism are provided; The supporting mechanism comprises a chuck (1), and a plurality of claws (2) are provided on the chuck (1); a loading mechanism moves the cable protection tube to the chuck (1); the fixing mechanism comprises a plurality of clamping rollers (4) provided on one side of the chuck (1); the claws (2) slide radially along the chuck (1) to clamp one end of the cable protection tube, and the other end of the cable protection tube is clamped by the clamping rollers (4); The milling mechanism comprises a milling cutter (11) and a milling cutter drive system (13), wherein the milling cutter drive system (13) drives the milling cutter (11) to move along the X, Y, and Z axis directions of the cable protection tube to perform milling. A clamping mechanism is provided on one side of the clamping roller (4), wherein the clamping mechanism comprises an upper clamping plate (7) and a lower clamping plate (8), and a second drive mechanism is provided near the clamping mechanism on the box body (19), wherein the second drive mechanism drives the clamping mechanism to slide and drive the upper clamping plate (7) and the lower clamping plate (8) to clamp the sample after being milled by the milling cutter (11) and transport it to the next station.

2. A cable protection tube milling device according to claim 1, characterized in that: The clamping roller (4) is arranged on the clamping roller fixing seat (5), and the clamping roller (4) is rotatably connected to the clamping roller fixing seat (5); the clamping roller fixing seat (5) is provided with a first driving mechanism fixed to the clamping roller, and the first driving mechanism comprises a guide rail (22), a guide block (20), and a first linear module (21); the guide block (20) is arranged at the bottom of the clamping roller fixing seat (5), and the clamping roller fixing seat (5) is slidably connected to the guide rail (21) via the guide block (20); the first linear module (21) drives the clamping roller fixing seat (5) to slide along the guide rail (21) to clamp the cable protection tube.

3. A cable protection tube milling device according to claim 1, characterized in that: The clamping mechanism further comprises a rotating disk (10), a clamping plate fixing seat (9) is provided on the rotating disk (10), and an upper clamping plate (7) and a lower clamping plate (8) are arranged on the clamping plate fixing seat (9); a second driving mechanism is provided near the clamping mechanism on the box body (19), and the second driving mechanism drives the clamping mechanism to slide and drives the upper clamping plate (7) and the lower clamping plate (8) to move toward or away from each other in a vertical direction for clamping the sample after being milled by the milling cutter (11).

4. A cable protection tube milling device according to claim 1, characterized in that: The box body (19) is provided with a transfer card seat (14), the transfer card seat (14) is provided with a card slot (16), and the cable protection tube is clamped in the card slot (16).

5. A cable protection tube milling device according to claim 1, characterized in that: The loading mechanism comprises a grabbing claw (15), a movable arm (17) and a bracket (18); the grabbing claw (15) is slidably connected to the movable arm (17); a second linear module (23) is provided on the bracket (18); the second linear module (23) drives the movable arm (17) to slide and drives the grabbing claw (15) to grab the cable protection tube in the card slot (16) and move it onto the chuck (1).

6. A cable protection tube sample milling device according to claim 5, characterized in that: A crossbeam (1503) is provided on the movable arm (17), and a left claw (1501) and a right claw (1502) are provided at both ends of the crossbeam (1503). The left claw (1501) and the right claw (1502) move towards each other to clamp the cable protection tube.

7. A cable protection tube milling device according to claim 1, characterized in that: A clamp and platform (3) is provided at the bottom of the clamping claw (2); the clamp and platform (3) comprises a first clamp and platform (301), a second clamp and platform (302), and a third clamp and platform (303); the inner diameters of the first clamp and platform (301), the second clamp and platform (302), and the third clamp and platform (303) decrease gradually.

8. A cable protection tube milling device according to claim 1, characterized in that: The clamping roller (4) comprises a first clamping roller (401), a second clamping roller (402), a third clamping roller (403) and a fourth clamping roller (404); the first clamping roller (401) and the second clamping roller (402) are fitted to the middle of the cable protection tube, and the third clamping roller (403) and the fourth clamping roller (404) are fitted to a position close to the bottom of the cable protection tube.

9. A cable protection tube milling device according to claim 1, characterized in that: A material storage box is provided in the box body (19), and a movable baffle (25) is provided between the fixing mechanism and the clamping mechanism; a portion of the cable protection tube is clamped by the clamping mechanism to hold the milled sample, and another portion falls through the movable baffle (25) into the material storage box in the box body (19).

10. A milling method using the cable protection tube milling device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: The grabbing claw (15) of the loading mechanism grabs the cable protection tube from the card slot (16) of the transfer card seat (14); The movable arm (17) moves it to above the chuck (1) of the support mechanism, and the plurality of claws (2) of the support mechanism slide radially along the chuck (1) to clamp and fix one end of the cable protection tube; The first linear module (21) drives the clamping roller fixing seat (5) to slide along the guide rail (21) to drive the clamping roller (4) to clamp the other end of the cable protection tube; The milling cutter drive system (13) of the milling mechanism drives the milling cutter (11) to move along the X, Y, and Z axis directions of the cable protection tube to mill the cable protection tube; The second driving mechanism drives the clamping mechanism to slide and drive the upper clamping plate (7) and the lower clamping plate (8) to clamp the sample milled by the milling cutter (11) and transport it to the next workstation.

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