CN212505587U - Steel strand speed control mechanism and steel strand spraying production line comprising same - Google Patents
Steel strand speed control mechanism and steel strand spraying production line comprising same Download PDFInfo
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- CN212505587U CN212505587U CN202020882761.5U CN202020882761U CN212505587U CN 212505587 U CN212505587 U CN 212505587U CN 202020882761 U CN202020882761 U CN 202020882761U CN 212505587 U CN212505587 U CN 212505587U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 191
- 239000010959 steel Substances 0.000 title claims abstract description 191
- 230000007246 mechanism Effects 0.000 title claims abstract description 131
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 8
- 238000000429 assembly Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- 239000004593 Epoxy Substances 0.000 description 17
- 238000009941 weaving Methods 0.000 description 16
- 238000004364 calculation method Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model relates to a steel strand wires speed control mechanism reaches steel strand wires spraying production line that contains this mechanism, this speed control mechanism includes the encoder, the support frame, the axis of rotation, follow-up carousel and multiunit pinch roller subassembly, axis of rotation movable mounting is on the support frame, the rotatory inner circle of encoder is installed in axis of rotation one end, the follow-up carousel is installed at the axis of rotation other end, every group pinch roller subassembly includes wheel pole fixing base, a spring, wheel pole and pinch roller, wheel pole fixing base is fixed on the follow-up carousel, the wheel pole comprises installation pole and pinch roller mounting groove seat, the pinch roller is installed in the pinch roller mounting groove seat, wheel pole suit is in wheel pole fixing base, the spring mounting is between wheel pole fixing base and pinch roller mounting groove. The speed control mechanism does not need to manually adjust parameters, can always automatically acquire signals by the structure of the speed control mechanism to ensure that the advancing speed of the steel strand is synchronous with the rotating speed of the opening and closing mechanism, reduces labor cost, and improves safety factor and production efficiency.
Description
Technical Field
The utility model relates to a steel strand wires speed control mechanism reaches steel strand wires spraying production line that contains this mechanism.
Background
The monofilament epoxy spraying steel strand is formed by spraying epoxy powder on a smooth steel strand. In the production process of the monofilament epoxy spraying steel strand, seven smooth steel strands which are spirally combined into a bundle need to be opened to form seven independent monofilament steel strands which are parallel to each other, so that each monofilament steel strand can be independently powdered in an electrostatic epoxy spraying cabinet. After the seven steel wires are powdered, the seven steel strands which are subjected to stabilizing and cooling treatment and are wrapped by the epoxy coatings are required to be screwed into a bundle again, and a finished product of the monofilament epoxy spraying steel strand is formed.
The partial schematic diagram of the production line of the monofilament epoxy sprayed steel strand is shown in fig. 1 and fig. 2. The drawings of fig. 1 and 2 contain a large part of the breaking up means, preheating zone, spraying zone, cooling zone, closing means etc. 5. The steel strand wires must be broken into parallel steel wires between the breaking mechanism and the folding mechanism, and because the steel strand wires are only opened into seven independent parallel steel wires in a spraying area (spraying cabinet) and a cooling area of the epoxy sprayed steel strand wires, each steel wire can be sprayed, and the phenomena of powder rubbing and powder falling caused by mutual contact of the steel strand wires after powder coating before the steel strand wires are not cooled are prevented. Therefore, the breaking mechanism and the folding mechanism play a vital role in the spraying and cooling links of the monofilament epoxy spraying steel strand and are the most important factors for determining whether the epoxy powder is normally coated and whether the powder is damaged by contact before being cooled.
∅ 15.2.2 and ∅ 15.7.7 steel strands are formed by twisting seven steel strands, the straight wire at the center part is the central wire, and the 6 spiral steel wires which are uniformly distributed on the circumference of the central wire and wrapped around the central wire are the outer wires. The pitch and the diameter of the spiral outer wire are formed by extruding and stabilizing a plain steel strand by a die during production, and the pitch and the number of the spirals of the outer wire are kept unchanged after the steel strand is formed. The steel strand determines that the breaking mechanism and the folding mechanism correspondingly rotate for one circle when the steel strand passes through the breaking mechanism and the folding mechanism by the spiral distance of one steel strand. If the rotating number of turns of the scattering mechanism and the folding mechanism is not equal to the number of the steel strand spirals passing through the mechanism, the outer six spiral steel wires are over-twisted or are less twisted, and thus the outer wire deformation is caused, and the production of the monofilament sprayed epoxy steel strand is influenced. Therefore, the monofilament epoxy spraying steel strand can be normally produced only by adjusting the number of the rotation turns of the scattering mechanism and the folding mechanism to be exactly equal to the number of the steel strand spiral turns passing through the area. In the production line of the monofilament epoxy sprayed steel strand, the rotation of the breaking mechanism and the folding mechanism is driven by the motor, so that the rotation number of the breaking mechanism and the folding mechanism can be ensured to be equal to the spiral number of the steel strand passing through the area at any moment by controlling the rotation speed of the motor to be in a proper proportion with the advancing speed of the passing steel strand.
At present, a production line for spraying a steel strand with epoxy monofilament has two forms of motor rotation speed control modes, one is to control and regulate the rotation speed of a motor through a speed regulator, the other is to measure the advancing speed of the steel strand through an encoder, a signal output by the encoder is used as a basic input signal (base number) of the rotation speed of the servo motor, and the basic input signal (base number) is substituted into an operation through an input calculation formula to obtain the rotation speed of the servo motor. The two motor rotating speed control and regulation modes have the following characteristics.
1. Speed regulation of a speed regulator: the speed of the speed regulator is adjusted by manually and directly adjusting the rotating speed of the motor, when the advancing speed of the steel strand is changed, the rotating speed of the motor needs to be adjusted manually until the number of rotating circles of the breaking mechanism and the folding mechanism driven by the motor in unit time is equal to the number of rotating circles of the steel strand in unit time. The disadvantage of this adjustment method is that it is artificially impossible to adjust the rotation speed of the motor to a full match with the advancing speed of the steel strand (when the steel strand is completely matched, the motor drives the breaking mechanism and the folding mechanism to rotate exactly one turn each time the steel strand advances one helical length). In general, an experienced master can only adjust the rotation speed to be infinitely close to the completely matched rotation speed, and in this case, as the production progresses, the rotation speed errors are slowly accumulated, so that the weaving point of the steel strand moves along a certain direction. When the rotating speed of the motor is higher than that of the motor in complete matching, the steel strand weaving points at the breaking mechanism and the folding mechanism (generally called opening and closing mechanism) move along the opposite direction of the advancing direction of the steel strands, and when the rotating speed of the motor is lower than that of the motor in complete matching, the steel strand weaving points at the breaking mechanism and the folding mechanism (generally called opening and closing mechanism) move along the advancing direction of the steel strands. No matter the actual rotating speed of the motor is higher than that of the motor in complete matching or lower than that of the motor in complete matching, the steel strand weaving points can be caused to move, when the weaving points move towards any direction (the moving directions of the two weaving points are always the same), one weaving point can gradually move towards a rotating disc on a breaking mechanism or a folding mechanism (generally called an opening and closing mechanism), when the steel strand weaving points gradually move towards the rotating disc on the breaking mechanism or the folding mechanism, the opening angles of six outer wires at the weaving points can be gradually increased, the tensile force applied to the outer wires can be gradually increased, and if the steel strand weaving points continue to move towards the rotating disc, the six outer wires can be broken due to overlarge tensile force applied to the outer wires, so that the production of the monofilament epoxy coated steel strand is forced to stop. In actual production, the rotating speed of the motor cannot be adjusted to the rotating speed when the rotating speed is completely matched with the advancing speed of the steel strand, but the rotating speed is judged to be higher than or lower than the rotating speed when the rotating speed is completely matched through the moving direction of the weaving point, so that the rotating speed of the motor can be reasonably modified, the weaving point can move in a reciprocating mode within a safe range (the safe distance between the weaving point and a rotary table), and normal production is guaranteed.
2. And substituting the base number into the speed control mode of the operational formula: the speed control mode of substituting the base number into the operational formula is to multiply the signal output by the encoder (the rotating speed of the encoder) by the constant value in the operational formula to obtain the output rotating speed of the servo motor. The speed control mode is that the operation speed of the servo motor is obtained by two cardinalities through operation, wherein the cardinality is a signal (the rotating speed of an encoder) output by the encoder, and the cardinality is a constant value in an operation formula. Compared with speed control of a speed regulator, the speed control mode of substituting the base number into the operational formula has the advantages that when the advancing speed of the steel strand changes, the base number one (the rotating speed of the encoder) can also correspondingly change in an equal proportion, so that the rotating speed of the servo motor obtained by multiplying the change in the equal proportion by a constant value can also change in an equal proportion, the rotating speed of the rotary table also changes in an equal proportion, the advancing speed of the steel strand is changed in any way, the rotating speed of the rotary table always changes in an equal proportion with the rotating speed of the rotary table, and the effect of automatic speed regulation is achieved.
As can be seen from the conventional structure diagrams (FIGS. 3 to 4), the linear velocity v at which the strand advancesSteel strandLinear velocity v of U-shaped groove of rotary discRotary discIn the same way, the rotary disk is connected with the rotary inner hole of the encoder through the rotary shaft, so that the angular speed omega of the rotary diskRotary discAngular velocity omega from encoderEncoder for encoding a video signalThe same is true.
Is formulated as follows:
from this structure, it can be seen that: vSteel strand=VRotary disc；ωRotary disc=ωEncoder for encoding a video signal；
By the formula: vRotary disc=ωRotary disc×rRotary disc；
→ VSteel strand=ωRotary disc×rRotary disc；
→ VSteel strand=ωEncoder for encoding a video signal×rRotary disc；
Conditions are as follows: the steel strand advances for a spiral length, and the opening and closing mechanism rotates for one circle;
in the formula: v. ofSteel strandTo representThe linear speed of the steel strand advancing;
vrotary discThe linear velocity of the nearest circle center of the arc-shaped groove of the turntable is represented;
ωrotary discRepresenting the angular velocity of the turntable;
ωencoder for encoding a video signalRepresenting the angular velocity of the encoder;
rrotary discThe radius of the circumference at the nearest circle center of the arc-shaped groove of the turntable is shown;
t represents time;
pscrew threadThe length of six outer wires of a steel strand for one helical distance is shown.
From the above calculation formula, the rotation speed ω of the opening and closing mechanism satisfies the condition of speed synchronizationOpening and closing mechanism=（2π×vSteel strand）÷pScrew thread. In this formula, vSteel strandIs through vSteel strand=ωEncoder for encoding a video signal×rRotary discCalculated to obtain pScrew threadIn order to measure the length of one helical distance of six outer wires of the steel strand, pi in 2 pi is a constant value pi. From this calculation formula, it can be seen that the rotation speed ω of the opening and closing mechanism is accurateOpening and closing mechanismV is requiredSteel strandAnd pScrew threadAre all correct actual values. But by calculating the formula vSteel strand=ωEncoder for encoding a video signal×rRotary discIt can be seen that v is calculated from this formulaSteel strandThere is always a certain error with the correct value of the advancing speed of the steel strand for the following reasons: v. ofSteel strand=ωEncoder for encoding a video signal×rRotary discω in the formulaEncoder for encoding a video signalIs the value obtained by processing the photoelectric signal of the rotary shaft of the encoder when the rotary shaft rotates, wherein the value is the real value, but the r obtained by measurementRotary discThe numerical value of (A) has slight error with the numerical value of the distance length from the mutual contact point of the steel strand and the U-shaped groove of the turntable to the center of the turntable when the steel strand advances (the steel strand is not round in shape, and is formed by winding six outer wires to be close to a round shape, when the steel strand advances, the contact point of the steel strand and the U-shaped groove moves on the arc of the U-shaped groove, so that the distance from the contact point to the center of the turntable changes within a certain range, and the contact point to the center of the turntable is changedDistance length of circle center of rotary table and r defined by formulaRotary discHas a slight error) resulting in a calculated vSteel strandThere is always a slight error from the actual speed of advancement of the steel strand. Except for the calculated vSteel strandIn addition, p obtained by artificial measurementScrew threadThe actual spiral length value of the steel strand has a certain error, so that the two values with errors in the actual value are substituted into omegaOpening and closing mechanism=（2π×vSteel strand）÷pScrew threadω obtained by calculation in the calculation formula (c)Opening and closing mechanismWith the correct omegaOpening and closing mechanismAnd errors exist, so that the opening and closing mechanism cannot really achieve the effect that the rotating speed of the opening and closing mechanism is synchronous with the advancing speed of the steel strand. Therefore, in the actual working process, the speed of the rotary table can be corrected only by judging whether the rotary speed of the rotary table is higher than the theoretical rotary speed or lower than the theoretical rotary speed according to the moving direction of the knitting points. For example, during the production work, the operator observes that the braiding point of the steel strand moves towards the advancing direction of the steel strand, so he knows that the rotating speed of the opening and closing mechanism is slower than the theoretical rotating speed of the opening and closing mechanism, and needs to use the formula omegaOpening and closing mechanism=（2π×vSteel strand）÷pScrew threadIn (c) pScrew threadIs decreased so that ω isOpening and closing mechanismIs increased to reach omegaOpening and closing mechanismThe rotational speed of (a) is adjusted to the same purpose as the theoretical rotational speed of the opening and closing mechanism.
It can be known from the above principle discussion that the above two rotating speed adjusting mechanisms of the opening and closing mechanism need to be manually observed and adjusted to gradually approach the theoretical rotating speed, and the control method has great risk and difficulty, and when an operator leaves little attention, the operator may cause the steel strand weaving point to rapidly move because the deviation between the rotating speed of the opening and closing mechanism and the theoretical rotating speed is great, so that the steel strand is twisted off or twisted to be dead to pull the opening and closing mechanism towards the moving direction of the steel strand.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the utility model provides a steel strand wires speed control mechanism and contain steel strand wires spraying production line of this mechanism, this speed control mechanism need not the parameter relevant with mechanism's revolution that opens and shuts of artificial going adjustment, can guarantee by its self structure automatic acquisition signal all the time that the steel strand wires speed of advancing and the mechanism's rotational speed that opens and shuts realize synchronous, the artificial cost that has significantly reduced has also improved the factor of safety of production, has improved the efficiency of production, has solved the weak point that above-mentioned prior art exists.
The technical scheme for solving the technical problems is as follows: a steel strand speed control mechanism comprises an encoder, a support frame, a rotating shaft, a follow-up rotating disc and at least 3 groups of pinch roller assemblies uniformly distributed on the follow-up rotating disc, wherein the rotating shaft is installed on the support frame through a fixing frame and a bearing I, the rotating shaft is provided with a steel strand which penetrates through a middle hole, a fixed outer ring of the encoder is connected with the fixing frame through a connecting frame, a rotating inner ring of the encoder is installed at one end of the rotating shaft, the follow-up rotating disc is installed at the other end of the rotating shaft, the follow-up rotating disc is provided with a central hole which is communicated with the steel strand of the rotating shaft through the middle hole, each group of pinch roller assemblies comprises a wheel rod fixing seat, a spring, a wheel rod and N pinch rollers, the value of N is 2-20, the wheel rod fixing seat is fixed on the follow-up rotating disc, the wheel rod is composed of a mounting rod and a, open the arc wall that is used for compressing tightly the steel strand wires steel wire on the pinch roller, the installation pole suit of wheel pole is spacing in wheel pole fixing base and through installing the bolt at installation pole tail end, spring mounting lies in between wheel pole fixing base and the pinch roller mounting groove seat on the installation pole, and during operating condition, the pinch roller of every group pinch roller subassembly compresses tightly a steel wire of steel strand wires respectively.
The diameter of the arc-shaped groove of the pressing wheel is 0-1.0mm larger than the diameter of the steel wire of the steel strand to be pressed.
One end of the pin shaft is provided with a clamping step, and the other end of the pin shaft is fixed through a positioning pin.
The utility model discloses another technical scheme is: the utility model provides a steel strand wires spraying production line, includes that the steel strand wires are broken up the mechanism, the district of heating in advance, spraying cabinet, cooling space and steel strand wires fold the mechanism, still including speed control mechanism with be used for controlling the steel strand wires and break up the servo motor controller of mechanism and steel strand wires fold mechanism servo motor, speed control mechanism is foretell steel strand wires speed control mechanism, speed control mechanism's encoder and servo motor controller electric connection.
The utility model discloses a steel strand wires speed control mechanism promotes the follow-up carousel through the helix of steel strand wires self and rotates, the rotatory rotational speed of its follow-up carousel is decided jointly by the spiral length of steel strand wires forward speed and steel strand wires completely, and guaranteed the length of every removal spiral of steel strand wires all the time, the follow-up carousel has just corresponding rotation round, just also rotated the number of turns the same with the steel strand wires spiral number through this mechanism with the mechanism that opens and shuts that follow-up carousel speed is the same all the time like this, the condition that the steel strand wires woven the point and remove can not appear, the normal production of monofilament spraying epoxy steel strand wires has been guaranteed. No matter what kind of spiral length's steel strand wires are changed to steel strand wires, or what kind of production speed is adjusted to steel strand wires, all need not artificial going to adjust and the mechanism revolution related parameter that opens and shuts, can make exact response by its self structure automatic acquisition signal all the time, the artificial cost that has significantly reduced has also improved the factor of safety of production, has improved the efficiency of production.
The technical features of a steel strand speed control mechanism and a steel strand spraying production line including the same according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1: the existing production line of monofilament epoxy spraying steel strand is partially schematic (double-motor structure).
FIG. 2: the existing production line of monofilament epoxy spraying steel strand is partially schematic (single motor connecting shaft structure).
FIG. 3: and substituting the existing base number into the left view of the speed control mechanism structure of the operational formula.
FIG. 4: the existing base number is substituted into the main view section of the speed control mechanism structure of the operational formula.
FIG. 5: the utility model discloses a steel strand wires speed control mechanism looks front cut-away view.
FIG. 6: the utility model discloses a steel strand wires speed control mechanism right side view (enlarge).
FIG. 7: the utility model discloses a steel strand wires spraying production line local schematic diagram.
In the figure: a-breaking mechanism, A1-breaking mechanism motor, A2-breaking mechanism gear, A3-breaking mechanism turntable, B-weaving point, C-preheating zone, D-spraying cabinet, D1-powder spray gun, E-cooling zone, F-folding mechanism, F1-folding mechanism motor, F2-folding mechanism gear, F3-folding mechanism turntable, F4-folding mechanism fixing frame and G-connecting shaft.
H1-encoder mounting seat, H2-frame, H3-rotary table, H4-rotary shaft and H5-encoder.
P-steel strand, P1-central straight wire, P2-outer spiral wire.
The method comprises the following steps of 1-supporting frame, 2-bearing I, 3-encoder, 4-connecting frame, 5-fixing frame, 6-rotating shaft, 61-steel stranded wire passing through a center hole, 7-follow-up turntable, 8-wheel rod fixing seat, 9-spring, 10-wheel rod, 101-mounting rod, 102-pressing wheel mounting groove seat, 11-pressing wheel, 111-arc groove, 12-bolt, 13-bearing II, 14-pin shaft, 15-positioning pin and 16-servo motor controller.
The arrows in the figure indicate the direction of advancement of the steel strands.
Detailed Description
Example 1: a steel strand speed control mechanism is shown in figures 5-6 and comprises an encoder 3, a support frame 1, a rotating shaft 6, a follow-up rotating disc 7 and 3 groups of pinch roller assemblies uniformly distributed on the follow-up rotating disc, wherein the rotating shaft 6 is installed on the support frame 1 through a fixing frame 5 and a bearing I2, a steel strand penetrates through a middle hole 61 is formed in the rotating shaft, a fixed outer ring of the encoder is connected with the fixing frame 5 through a connecting frame 4, a rotating inner ring of the encoder is installed at one end of the rotating shaft 5, the follow-up rotating disc 7 is installed at the other end of the rotating shaft, a central hole which is communicated with the steel strand of the rotating shaft through the middle hole is formed in the follow-up rotating disc 7, each group of pinch roller assemblies comprises a wheel rod fixing seat 8, a spring 9, a wheel rod 10 and N pinch rollers 11, and the value of the N is 2-20 (the number of, 4, 5, 6 or more, each pinch roller corresponds to a steel wire with one wire diameter, when a steel strand with another wire diameter is replaced, the pinch roller is replaced, the diameter of an arc-shaped groove of the replaced pinch roller is equal to or slightly larger than that of the steel wire with the other wire diameter, the wheel rod fixing seat 8 is fixed on the follow-up rotary table 7, the wheel rod 10 is composed of a mounting rod 101 and a pinch roller mounting groove seat 102 with a mounting groove, the pinch roller 11 is mounted in the mounting groove of the pinch roller mounting groove seat 102 through a pin shaft 14 and a bearing II 13, the pinch roller 11 is provided with an arc-shaped groove 111 for compressing the steel wire of the steel strand, the diameters of the arc-shaped grooves on the pinch rollers in the same group of pinch roller assemblies are different, when in use, the pinch roller with the proper diameter of the arc-shaped groove is replaced according to the diameter of the steel strand, the mounting rod 101 of the wheel rod is sleeved in the wheel rod fixing seat 8 and is limited through, the installation pole 101 can reciprocate in wheel pole fixing base 8, spring 9 installs and lies in between wheel pole fixing base 8 and pinch roller mounting groove seat 102 on installation pole 101, and during operating condition, the pinch roller 11 of every group pinch roller subassembly compresses tightly a steel wire of steel strand wires respectively under the elastic force effort of spring, and the steel wire is located the arc wall 111 of pinch roller.
In this embodiment, the diameter of the arc-shaped groove of the pressing wheel is 0-1.0mm larger than the diameter of the steel wire of the steel strand to be pressed. As a transformation, the diameter of the arc-shaped groove can be adjusted and changed according to actual conditions, and the pressing wheel can be ensured to rotate along the spiral line of the steel strand only by ensuring that the steel strand cannot run out of the arc-shaped groove of the pressing wheel.
In this embodiment, one end of the pin shaft is set as a clamping step, and the other end of the pin shaft is fixed by the positioning pin 15. As an alternative, the mounting and positioning of the pin shaft may also be implemented in other suitable manners.
As a transformation, the number of the pinch roller assemblies can be increased according to actual conditions, and the number of the steel strands distributed on the excircle of the braided steel strand is not more than the number of the steel strands distributed on the excircle of the braided steel strand.
Example 2: a steel strand spraying production line is shown in figure 7 and comprises a steel strand scattering mechanism, a preheating area, a spraying cabinet, a cooling area, a steel strand folding mechanism, a speed control mechanism and a servo motor controller 16 used for controlling servo motors of the steel strand scattering mechanism and the steel strand folding mechanism, wherein the speed control mechanism is the steel strand speed control mechanism as in embodiment 1, and a coder of the speed control mechanism is electrically connected with the servo motor controller. The concrete structures of the steel strand scattering mechanism, the preheating zone, the spraying cabinet, the cooling zone and the steel strand folding mechanism are the same as those in the prior art.
The utility model is suitable for a steel strand wires woven, the steel strand wires radical of weaving is not limited, and its theory of operation as follows: 3 pinch rollers are arranged on the follow-up turntable, and arc grooves are formed in the pinch rollers. In the working process, the steel strand penetrates through the central hole of the follow-up turntable, the pinch roller fixed on the follow-up turntable compresses the steel strand under the elastic force of the spring, so that three of six outer wires of the steel strand (the three outer wires are uniformly distributed on the circumference of the cross section, and the distribution angle of two adjacent outer wires is 120 degrees) are always positioned in the arc groove on the pinch roller. When the steel strand moves forward, the three outer wires pressed in the circular arc groove of the pressing wheel also move forward, when the three outer wires move forward, the friction force between the outer wires and the pressing wheel can drive the pressing wheel to rotate around the pin shaft, meanwhile, the helix angles of the three outer wires can provide 90-degree thrust for the pressing wheel and the helix angles, the thrust is transmitted to the follow-up turntable through the pressing wheel, the follow-up turntable is driven to rotate along with the linear motion of the steel strand, meanwhile, the follow-up turntable drives the rotating shaft and the encoder to synchronously rotate, the rotation of the follow-up turntable is characterized in that when the steel strand moves the helix length of one outer wire along the axis direction, the follow-up turntable is just pushed by the helix to rotate for a circle, and the rotating speed is just the rotating speed which is required by the turntable in the breaking mechanism and the closing mechanism and is completely matched with the advancing speed of the steel strand. Therefore, as long as the encoder which is arranged on the rotating shaft and synchronously rotates with the follow-up turntable is used for acquiring the rotating speed of the follow-up turntable and inputting the signal into the servo motor controller, the rotating speeds of the turntable of the breaking mechanism and the folding mechanism (generally called as an opening and closing mechanism) controlled by the servo motor are the same as the moment of the follow-up turntable, and the effect of completely and automatically matching the rotating speeds of the breaking mechanism and the folding mechanism with the advancing speed of the steel strand is achieved.
It is right through above the utility model discloses a theory of operation analysis can know: rotation speed omega of follow-up turntableFollow-up rotary discWith the speed omega of the encoderEncoder for encoding a video signalSame, i.e. ωFollow-up rotary disc=ωEncoder for encoding a video signal(ii) a Rotating speed omega of opening and closing mechanism turntableOpening and closing mechanism=ωServo motorXs; wherein s is the transmission ratio from the servo motor to the turntable of the opening and closing mechanism, and the transmission ratio s is a correct constant value determined by the transmission mechanism; omegaServo motorIs the rotation speed of the servo motor. Therefore, in the control system of the servo motor, if the rotation speed ω of the servo motor is setServo motorIs set to omegaServo motor=ωEncoder for encoding a video signalS, the speed of the servomotor controlled by the control system is ωServo motor=ωEncoder for encoding a video signalS, the speed of the servo motor is reduced by the transmission mechanism, and the rotating speed of the servo motor transmitted to the rotating disc of the opening and closing mechanism is omegaOpening and closing mechanism=ωServo motorXs; will omegaServo motor=ωEncoder for encoding a video signalSubstituting us into omegaOpening and closing mechanism=ωServo motorX.s is known as ωOpening and closing mechanism=（ωEncoder for encoding a video signal÷s）×s=ωEncoder for encoding a video signalBy setting the speed of the servomotor to ω in the servomotor control systemServo motor=ωEncoder for encoding a video signalAfter the division of s, the rotating speed of the opening and closing mechanism driven by the servo motor is equal to the rotating speed of the encoder, and the rotating speed of the encoder is equal to the rotating speed of the follow-up turntable, so that the rotating speed of the opening and closing mechanism turntable is equal to the rotating speed of the follow-up turntable. Through the utility model discloses the rotatory characteristics of follow-up carousel "when steel strand wires removed the spiral length of an outer silk along the axis direction, the follow-up carousel was promoted by the helix and has just rotated a week" can, when steel strand wires removed the spiral length of an outer silk along the axis direction, the mechanism's that opens and shuts carousel that servo motor drove also just rotated a week, and this has just reached the synchronous purpose of mechanism's carousel rotation rate and steel strand wires speed of advance. Because in the control system of the rotation speed of the servo motor, the operational formula omega of the speed controlServo motor=ωEncoder for encoding a video signalSpeed of rotation omega of encoder in/sEncoder for encoding a video signalAnd reduction ratio sIs a correct value, and therefore the final result ω of its calculationOpening and closing mechanismAlso correct value = ωEncoder for encoding a video signal=ωFollow-up rotary disc。
Claims (4)
1. The utility model provides a steel strand wires speed control mechanism which characterized in that: the device comprises an encoder, a support frame, a rotating shaft, a follow-up rotating disc and at least 3 groups of pinch roller assemblies uniformly distributed on the follow-up rotating disc, wherein the rotating shaft is arranged on the support frame through a fixing frame and a bearing I, a steel strand penetrates through a center hole in the rotating shaft, the fixed outer ring of the encoder is connected with the fixing frame through a connecting frame, the rotating inner ring of the encoder is arranged at one end of the rotating shaft, the follow-up rotating disc is arranged at the other end of the rotating shaft, the follow-up rotating disc is provided with a center hole communicated with the steel strand of the rotating shaft through the center hole, each group of pinch roller assemblies comprises a wheel rod fixing seat, a spring, a wheel rod and N pinch rollers, the value of N is 2-20, the wheel rod fixing seat is fixed on the follow-up rotating disc, the wheel rod consists of an installation rod and a pinch roller, open the arc wall that is used for compressing tightly the steel strand wires steel wire on the pinch roller, the installation pole suit of wheel pole is spacing in wheel pole fixing base and through installing the bolt at installation pole tail end, spring mounting lies in between wheel pole fixing base and the pinch roller mounting groove seat on the installation pole, and during operating condition, the pinch roller of every group pinch roller subassembly compresses tightly a steel wire of steel strand wires respectively.
2. The steel strand speed control mechanism of claim 1, wherein: the diameter of the arc-shaped groove of the pressing wheel is 0-1.0mm larger than the diameter of the steel wire of the steel strand to be pressed.
3. A strand speed control mechanism according to claim 1 or 2, wherein: one end of the pin shaft is provided with a clamping step, and the other end of the pin shaft is fixed through a positioning pin.
4. The utility model provides a steel strand wires spraying production line, includes that the steel strand wires break up mechanism, preheating zone, spraying cabinet, cooling space and steel strand wires and folds mechanism, its characterized in that: the steel strand folding device further comprises a speed control mechanism and a servo motor controller used for controlling servo motors of the steel strand scattering mechanism and the steel strand folding mechanism, wherein the speed control mechanism is the steel strand speed control mechanism according to any one of claims 1 to 3, and an encoder of the speed control mechanism is electrically connected with the servo motor controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020882761.5U CN212505587U (en) | 2020-05-23 | 2020-05-23 | Steel strand speed control mechanism and steel strand spraying production line comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020882761.5U CN212505587U (en) | 2020-05-23 | 2020-05-23 | Steel strand speed control mechanism and steel strand spraying production line comprising same |
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| Publication Number | Publication Date |
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| CN212505587U true CN212505587U (en) | 2021-02-09 |
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| CN202020882761.5U Active CN212505587U (en) | 2020-05-23 | 2020-05-23 | Steel strand speed control mechanism and steel strand spraying production line comprising same |
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| Country | Link |
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| CN (1) | CN212505587U (en) |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A steel wire speed control mechanism and a steel wire spraying production line containing the mechanism Granted publication date: 20210209 Pledgee: China Everbright Bank Co.,Ltd. Liuzhou Branch Pledgor: LIUZHOU GUIQIAO CABLE Co.,Ltd. Registration number: Y2024450000027 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |