CN109677992B - Sample manufacturing system for crosstalk test - Google Patents
Sample manufacturing system for crosstalk test Download PDFInfo
- Publication number
- CN109677992B CN109677992B CN201811569417.4A CN201811569417A CN109677992B CN 109677992 B CN109677992 B CN 109677992B CN 201811569417 A CN201811569417 A CN 201811569417A CN 109677992 B CN109677992 B CN 109677992B
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- cable
- tape
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- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000002390 adhesive tape Substances 0.000 claims description 29
- 238000005520 cutting process Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 11
- 239000007769 metal material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000005464 sample preparation method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/18—Methods or apparatus in which packages rotate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
- B65H35/002—Hand-held or table apparatus
- B65H35/0026—Hand-held or table apparatus for delivering pressure-sensitive adhesive tape
Abstract
The application discloses a sample making system for crosstalk test, which comprises: the paying-off device comprises a predetermined number n of paying-off devices, a wire-collecting forming device, a bundling device and a wire collecting device, wherein the paying-off devices are used for paying off n cables according to a predetermined speed and a predetermined tension; the line concentration forming device comprises an n-hole sleeve with an inlet and an outlet, and is used for grouping n cables delivered by the line concentration forming device into a bundle; the outlet caliber is determined according to the caliber of the cable, and the inlet caliber is adapted to the paying-off device; the bundling device bundles n cables at intervals of a preset distance; the wire winding device is used for winding the bundled cable bundle. The application can manufacture external crosstalk samples with high efficiency and low cost, saves labor, and eliminates the phenomenon of uneven sample quality caused by uncontrollable manual manufacturing process of personnel.
Description
Technical Field
The application relates to the technical field of testing, in particular to a sample manufacturing system for crosstalk testing.
Background
YD/T1019-2013, "polyolefin insulation horizontal twisted pair cable for data communication" specifies: external near-end crosstalk and external far-end crosstalk need to be tested for category 6A and 7A cables. Requirements for alien crosstalk samples are given in YD/T1019-2013 appendix C.1.2.3: 7 cables are linearly bundled over the length to form a 1+6 structure.
IEC 61156-1-2009, "Multicore and symmetrical pair/quad cables for digital communications-Part 1: generic specification, a traditional sample preparation method by purely manual winding and coiling is given in: on a spool with a minimum diameter of 1.2 meters, as shown in FIG. 1, 9 samples were required, each 100 meters long, nine numbered 1, 2, 3, 4, 5, 6, 7, 8, V, and the 9 samples were divided into 3 groups. The samples of the first set of numbers 8, 5, 4 were wound on the first layer of the spool as shown, the samples of the second set of numbers 6, V, 3 were wound on the second layer, and the samples of the third set of numbers 1, 2, 7 were wound on the third layer. The span between the left baffle and the right baffle of the winding shaft is long enough to ensure that each group of samples can be wound in one layer. After a 100-meter sample is wound on a spool, 9 samples with the numbers of 1, 2, 3, 4, 5, 6, 7, 8 and V are taken at the tail end at one time, the samples with the numbers of 7 and 8 used for fixing the position are removed, the rest samples are fixed by adhesive tapes at intervals of 10cm, as shown in figure 2, the 100-meter sample is orderly bundled well, and the sample preparation is completed. According to this method, although a sample required for testing alien crosstalk can be obtained, there are certain drawbacks. The samples for making alien crosstalk only need 7 data cables of 100 meters to make up the required structure, but are made according to the method described in the conventional IEC 61156-1-2009, requiring 9 data cables of 100 meters. While ensuring structural stability, the difficulty and cost of sample preparation are increased.
According to the method, the sample is manufactured by hands, the labor cost is high, the sample preparation time is long, the sample preparation method is complex, the sample required by sample preparation is more than the sample actually required to be tested, and the problems of time and labor waste, material consumption and the like exist. The test cost is high. Because different personnel sample preparation technologies are different, uncertainty of test results caused by personnel factors is easy to introduce.
Disclosure of Invention
The present application has been made in view of the above problems, and aims to overcome or at least partially solve the above problems. In one aspect of the application, there is provided a sample preparation system for crosstalk testing, the system comprising: the paying-off device comprises a predetermined number n of paying-off devices, a wire-collecting forming device, a bundling device and a wire collecting device, wherein the paying-off devices are used for paying off n cables according to a predetermined speed and a predetermined tension; the line concentration forming device comprises an n-hole sleeve with an inlet and an outlet, and is used for grouping n cables delivered by the line concentration forming device into a bundle; the outlet caliber is determined according to the caliber of the cable, and the inlet caliber is adapted to the paying-off device; the bundling device bundles n cables at intervals of a preset distance; the wire winding device is used for winding the bundled cable bundle.
Optionally, the paying-off device comprises a commodity shelf, a preset number of n paying-off devices and n rotating wheels, wherein the paying-off devices and the rotating wheels are arranged on the commodity shelf, and each rotating wheel is arranged beside one paying-off device and used for detecting the stress value of a cable on the paying-off device.
Optionally, the system further comprises a stepper motor that drives each of the payoff devices to automatically pay off the cable.
Optionally, the hub forming device further comprises a lifting bracket, and the n-hole sleeve is fixed in the lifting bracket and is adjusted up and down along with the lifting bracket.
Optionally, the system further comprises at least one fixed pulley, a second motor and a steel wire rope, wherein the second motor drives the lifting bracket to move up and down through the steel wire rope and the fixed pulley.
Optionally, the bundling device comprises a tape fixing part, a tape lifting part, a tape pressing part, a turntable and a tape cutting part, wherein the tape lifting part is used for bonding the tape on the tape fixing part and conveying the tape to the cable bundle, and the tape pressing part is used for pressing the tape on the cable bundle; the turntable is used for driving the adhesive tape to rotate; the tape cutting member is used for cutting off the tape.
Optionally, the tape upper picking component is extended based on the tape cutting component and retracted based on the tape pressing component.
Optionally, the adhesive tape cutting component is a rotatable knife fixed on the turntable, and when the turntable rotates for two weeks, the knife rotates for one circle.
Optionally, the wire winding device comprises a cylinder, wherein a spiral upward groove is formed in the cylinder, and the rotation speed of the cylinder is matched with the movement speed of the lifting frame.
Optionally, the wire winding device is made of a nonmetallic material.
The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages: the external crosstalk sample can be manufactured efficiently and at low cost, the manpower is saved, and the phenomenon of uneven sample quality caused by uncontrollable manual manufacturing process of personnel is eliminated.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 illustrates a conventional purely manual spool-in sample preparation according to the prior art;
FIG. 2 shows the state of the art bundled cable;
FIG. 3 shows a cross-sectional view of a bundled cable harness as required in the test standard;
FIG. 4 shows a block diagram of a sample preparation system according to the present application;
FIG. 5 shows a block diagram of a pay-off device;
FIGS. 6 a-6 c show a design of an n-hole cannula;
FIG. 7 shows a physical diagram of an n-hole cannula;
FIG. 8 shows a block diagram of a hub forming apparatus;
FIG. 9 shows a block diagram of a strapping device;
fig. 10 shows a design of the wire takeup device.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
When the data cable transmits signals, there is signal interference coupled between the pairs, and the signal interference can be divided into internal crosstalk and external crosstalk according to sources. Alien crosstalk is the signal interference of different cable-to-cable pairs in a bundled data cable. Since the alien crosstalk can be overlapped with normal signals, which leads to signal distortion, and in severe cases, the error rate of the link can be increased, so that the equipment cannot be connected, it is important to check whether the alien crosstalk index of the data cable is qualified.
According to YD/T1019-2013, the following is specified in polyolefin insulation level twisted pair cable for data communication: external near-end crosstalk and external far-end crosstalk need to be tested for category 6A and 7A cables. Sample preparation is described in YD/T1019-2013 appendix C.1.2.3:
before testing, 7 cable samples with the length of 100+/-1 meter are prepared, each cable needs to be marked in advance, and the cables are produced in the same batch.
The 7 cables were linearly bundled over their entire length in the combined sequence of fig. 3, forming a 1+6 structure. The cables should remain straight, untwisted during the bundling process, and be uniformly and equally spaced with insulating tape or other similar tape. The binding force is proper in tightness, the integral structure of the cable cannot be damaged, and meanwhile, the proper fit between the cables is kept. The strapping interval is 200mm.
To meet the requirements in the above standard, the present application proposes a sample preparation device system for testing crosstalk, as shown in fig. 4, comprising: a paying-off device 1, a wire-collecting forming device 2, a bundling device 3 and a wire-collecting device 4, wherein the paying-off device comprises a predetermined number n of paying-off devices 11 for paying-off n cables according to a predetermined speed and a predetermined tension; the line concentration forming device comprises an n-hole sleeve with an inlet and an outlet, and is used for grouping n cables delivered by the line concentration forming device into a bundle; the outlet caliber is determined according to the caliber of the cable, and the inlet caliber is adapted to the paying-off device; the bundling device bundles n cables at intervals of a preset distance; the wire winding device is used for winding the bundled cable bundle.
In the standard, 7 cables are required to be bundled to form a bundle, samples are manufactured, n in the technical scheme provided by the application is selected to be 7 in order to adapt to the standard, and of course, n is not limited to 7, and n can be any natural number greater than or equal to 2, so as to adapt to the standard to be changed later or to provide a new standard.
Specifically, as shown in fig. 5, the paying-off device includes a rack 10, a predetermined number n of paying-off devices 11, and n rotating wheels 12, the paying-off devices and 11 rotating wheels 12 are provided on the rack 10, each rotating wheel is installed beside one paying-off device, for detecting a stress value of a cable on the paying-off device. As a preferred implementation mode, the paying-off device consists of a 3-layer commodity shelf, 7 automatic paying-off devices and 7 pressure-testable rotating wheels, wherein the paying-off devices and the pressure-testing rotating wheels are placed on the commodity shelf. The length of the commodity shelf is more than 2.1 meters, the width is more than 0.7 meters, the single-layer height is more than 0.7 meters, and stainless steel metal materials are preferably adopted. Each paying-off device is provided with a stepping motor with adjustable low installation speed, and automatic lofting can be realized through rotation of the stepping motor. A rotating wheel capable of measuring force values is arranged at the rear position beside each paying-off shaft, the tightness state of the wire is fed back by reading the force values, and the stress on the cable is regulated in real time by controlling the rotating speed and forward and reverse rotation of the motor. Thus, the system also needs to include a stepper motor that drives each of the payoff devices to automatically pay off the cable.
The application groups 7 cables into a bundle through the 7-hole sleeve, the 7-hole sleeve has larger inlet and smaller outlet, the schematic diagrams are shown in fig. 6 a-6 c, and fig. 6a shows a cross-sectional view of the 7-hole sleeve at the inlet; FIG. 6b shows a side view of a 7-hole cannula; FIG. 6c shows a cross-sectional view at the outlet of a 7-hole cannula; the physical diagram is shown in fig. 7. In order to smoothly cluster the wire harness, the length of the 7-hole sleeve needs to be greater than 0.2 m, the caliber of the outlet needs to be determined according to the maximum outer diameter of the tested data cable, and the maximum outer diameter of the 4 pairs of 6A or 7A data cables specified in YD/T1019-2013 is 9.0mm, so that if the 4 pairs of data cables are tested, the small circle outer diameter of each outlet is 9.5mm. If other pairs of data cables need to be tested, the outer diameter of the outlet is correspondingly adjusted. The aperture of the inlet is required to be large enough, so that the data cable released by the paying-off device does not severely rub with the wire harness forming device when passing through the inlet of the wire harness forming device. In addition, each edge of the inlet of the 7-hole sleeve should be rounded to prevent scratching the sample outer sheath.
In order to uniformly wind the bundled cable harness on the wire collecting device, the wire collecting and forming device further comprises a lifting support, the 7-hole sleeve is fixed in the lifting support and is adjusted up and down along with the lifting support, and meanwhile, the lifting support forms a supporting part of the 7-hole sleeve. The size of the support is adjustable, the support can adapt to sleeves with different sizes, and the requirement that the minimum interval of the wire-wound and bundled samples is 100mm can be realized through the lifting of the support and the wire-winding device.
As shown in fig. 8, the wire-collecting and forming device 2 comprises at least one fixed pulley 21, a second motor 22, a steel wire rope 23 and a lifting bracket 24, wherein the second motor drives the lifting bracket to move up and down through the steel wire rope and the fixed pulley, besides the 7-hole sleeve. The sleeve is stably fixed in the bracket, the motor pulls the bracket to move up and down through the steel wire rope, and the friction is reduced between the bracket and the guide rails at two sides by using pulleys. The guide rails on two sides of the bracket set are preferably made of metal materials. As a specific embodiment, the up-and-down movement of the bracket is achieved by the forward and reverse rotation of the motor.
As shown in fig. 9, the bundling device comprises a tape fixing part 31, a tape raising part 32, a tape pressing part 33, a turntable 34 and a tape cutting part 35, wherein the tape raising part 32 is used for bonding the tape on the tape fixing part 31 and conveying the tape to the upper part of the cable bundle along a slideway, and the tape pressing part 33 is used for pressing the tape on the cable bundle; the turntable 34 is used for driving the adhesive tape to rotate; the tape cutting part 35 is used for cutting off the tape. The tape up-picking part is extended based on the tape cutting part and retracted based on the tape pressing part.
The binding device can be a rotatable large ring, the center of the binding device is hollowed for a sample to pass through, a bearing is arranged in the adhesive tape fixing device, and the adhesive tape can freely rotate after the adhesive tape is fixed on the adhesive tape fixing device. The logic of the strapping device operation is:
1. the adhesive tape upper picking part is a telescopic cylindrical rod, the adhesive tape upper picking part is triggered to stretch out after the adhesive tape is cut off after the cutting part rotates for one circle, the adhesive tape is adhered to the upper picking part at the moment through the slideway, the upper picking part drives the adhesive tape to the upper left along the track direction, and the pressing device can slide downwards along the track to be in contact with the adhesive tape in the state.
2. The tape pressing member presses the tape down into contact with the test piece, at which time the tape adheres to the upper side of the test piece. The tape upper picking part returns to the original position at the moment and is retracted into the disc, so that the phenomenon that the tape is used for bundling the sample is avoided.
3. The turntable rotated the tape for 2 weeks, at which time the tape had been wrapped around the sample for 2 weeks.
4. The adhesive tape cutting part is a knife which is fixed on the turntable and can rotate automatically, when the turntable rotates for two weeks, the adhesive tape cutting part automatically conveys for 1 week, and the knife on the upper edge of the cutting part cuts off the adhesive tape. At this point, the process jumps to step 1.
The wire winding device comprises a cylinder, as shown in fig. 10, on which a spiral upward groove is arranged, and the rotation speed of the cylinder is matched with the movement speed of the lifting frame. According to the test requirements, the minimum spacing between the strands is 10cm, and therefore the wire-rewinding device comprises a cylinder with a diameter greater than 1 meter and a height greater than 2.2 meters. The cylinder material should adopt non-metal, avoids the influence of metal material to the test. In order to enable the sample to be stably wound on the cylinder, a spiral upward semicircular groove is formed in the cylinder, and the diameter of the circular groove is 3cm. The rotation of the cylinder is achieved by the power provided by the motor. When the wire is wound, the rotating speed of the wire winding device is matched with the descending speed of the lifting frame of the wire harness forming device, namely the descending speed of the lifting frame is consistent with the spiral descending speed of the wire winding device sample. The wire winding device is schematically shown in fig. 10.
The technical scheme provided by the embodiment of the application has at least the following technical effects or advantages: the external crosstalk sample can be manufactured efficiently and at low cost, the manpower is saved, and the phenomenon of uneven sample quality caused by uncontrollable manual manufacturing process of personnel is eliminated.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed application requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (7)
1. A sample preparation system for crosstalk testing, the system comprising: the paying-off device comprises a predetermined number n of paying-off devices, a wire-collecting forming device, a bundling device and a wire collecting device, wherein the paying-off devices are used for paying off n cables according to a predetermined speed and a predetermined tension; the line concentration forming device comprises an n-hole sleeve with an inlet and an outlet, and is used for grouping n cables delivered by the line concentration forming device into a bundle; the outlet caliber is determined according to the caliber of the cable, and the inlet caliber is adapted to the paying-off device; the bundling device bundles n cables at intervals of a preset distance; the wire collecting device is used for coiling the bundled cable bundle; the binding device comprises an adhesive tape fixing component, a rotary table, an adhesive tape cutting component, an adhesive tape lifting component and an adhesive tape pressing component; the rotary table is used for driving the adhesive tape to rotate, and the adhesive tape cutting component is a small autorotation knife fixed on the rotary table and is used for cutting the adhesive tape by autorotation for one circle when the rotary table rotates for two circles; the adhesive tape upper picking component extends out based on the adhesive tape cutting component and is used for bonding the adhesive tape on the adhesive tape fixing component and conveying the adhesive tape to the upper part of the cable bundle by moving; the tape pressing member presses the tape against the cable bundle by sliding down, and the tape upper picking member is retracted based on the tape pressing member.
2. The system of claim 1, wherein the payout device comprises a rack, a predetermined number n of payout devices, and n reels, the payout devices and reels being disposed on the rack, each reel being mounted alongside one of the payout devices for detecting a stress value of a cable on the payout device.
3. The system of claim 1 or 2, further comprising a stepper motor that drives each payoff device in the payoff device to automatically pay off the cable.
4. The system of claim 1 or 2, wherein the hub forming device further comprises a lifting bracket, the n-hole sleeve being secured within the lifting bracket for up and down adjustment following the lifting bracket.
5. The system of claim 4, further comprising at least one fixed pulley, a second motor, and a wire rope, wherein the second motor moves the lifting support up and down through the wire rope and the fixed pulley.
6. The system of claim 4, wherein the wire takeup device comprises a cylinder having a helically upward slot disposed therein, the cylinder having a rotational speed that matches the speed of movement of the lifting support.
7. The system according to claim 1 or 2, wherein the wire takeup device is composed of a non-metallic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811569417.4A CN109677992B (en) | 2018-12-21 | 2018-12-21 | Sample manufacturing system for crosstalk test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569417.4A CN109677992B (en) | 2018-12-21 | 2018-12-21 | Sample manufacturing system for crosstalk test |
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| CN109677992A CN109677992A (en) | 2019-04-26 |
| CN109677992B true CN109677992B (en) | 2023-11-17 |
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