CN109484889B - Constant-tension self-adaptive feeder for thin steel strip - Google Patents
Constant-tension self-adaptive feeder for thin steel strip Download PDFInfo
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- CN109484889B CN109484889B CN201811569034.7A CN201811569034A CN109484889B CN 109484889 B CN109484889 B CN 109484889B CN 201811569034 A CN201811569034 A CN 201811569034A CN 109484889 B CN109484889 B CN 109484889B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/038—Controlling transverse register of web by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/34—Apparatus for taking-out curl from webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/173—Metal
Abstract
The invention relates to a constant-tension self-adaptive feeder for a thin-wall stainless steel belt, which comprises a steering rack, an equipment rack, a three-dimensional adjusting unit for controlling steering of the steel belt, a steel belt tray rotating device, a servo system, a control unit and a steering wheel mechanism thereof, a speed self-adaptive unit and a steel belt guiding leveling unit; the three-dimensional adjusting unit comprises a steel belt of a steering roller, a guiding roller of a self-adaptive unit, wherein the guiding roller is smoothly transited to the self-adaptive unit in a multi-azimuth manner through the vertical, horizontal, inclined and rotary manner, and the constant tension speed self-adaptive feeding of the steel belt is realized through three guiding rollers of the speed self-adaptive unit and a speed feedback and tension balancing weight. The invention adopts multi-disc steel belt coiling type feeding, combines speed self-adaptive control and tension control, can realize constant tension self-adaptive feeding, solves the problems of unstable feeding speed, strip edge fold and the like of corrugated pipe forming equipment, cable welding pipe equipment and thin piece blanking equipment, and has the advantages of high feeding precision, stable speed, self-adaptation, constant tension and the like.
Description
Technical Field
The invention relates to a feeder, in particular to a constant-tension self-adaptive feeder for a thin steel belt of a production line, and belongs to the technical field of machine manufacturing.
Background
The small-caliber stainless steel corrugated pipe hose is formed by rolling, welding and spinning a thin-wall stainless steel band, has comprehensive performances of flexibility, vibration resistance, pressure resistance, corrosion resistance, fatigue resistance and the like, can bear pulse, torsion and bending loads, and is an important pipe system connecting piece.
In order to solve the technical problem of precise hose forming, the problem of stable feeding of an online formed welded pipe needs to be overcome. To the best of applicant's knowledge, the traditional steel strip feeding mode is a single-disc horizontal or vertical follow-up rotary disc, and the rotary disc freely rotates along with the traction force of the steel strip. Because the feeding speed is uneven and the tension of the steel belt is not constant, the edge folds and twists of the steel belt are difficult to avoid, and the welding quality is affected. At present, although the strip rolling process adopts constant tension control, the whole set of control system is huge and complex (see Chinese patent with application number 201210590933.1) and cannot be applied to a small production line of end products.
As can be seen from the search, chinese patent application publication No. CN203253839U discloses a stainless steel belt feeding device, in which a mounting ring formed by spacing two or more arcuate sheets located on the same circumference has a variable diameter property, so as to adapt to a belt ring formed by stainless steel belts with different diameters, and generate a certain fastening force to the belt ring to prevent the belt ring from slipping and affecting the feeding quality.
Chinese patent application publication No. CN106629182a discloses a steel strip feeder comprising a frame, on the top surface of which two parallel side plates are mounted, the side plates being perpendicular to the top surface of the frame; a conveying rod, a tensioning roller assembly I, a compacting rod assembly I, a tensioning roller assembly II and a compacting rod assembly II are sequentially arranged between the two side plates along the length direction of the side plates; the tensioning roller assembly I comprises a supporting shaft, the supporting shaft is perpendicular to the side plates, the upper ends of the two side plates are fixedly connected with mounting blocks which are opposite to the supporting shaft from top to bottom respectively, the two ends of the supporting shaft are connected with the two mounting blocks respectively through tension springs, the supporting shaft is sleeved with a tensioning roller and is in clearance fit with the tensioning roller, the height of the tensioning roller is lower than that of the conveying roller, limiting plates are arranged on the supporting shafts on the two sides of the tensioning roller respectively, and the limiting plates are in contact with the side surfaces of steel belts on the tensioning roller. The steel belt conveying device can prevent the steel belt from deviating in the conveying process and ensure the stable conveying of the steel belt.
The Chinese patent with the publication number of CN205816506U discloses an LED support stamping machine tool and a steel belt feeding device, which comprises a support frame and a support disc, wherein the support disc is rotatably arranged on the support frame, and is characterized in that: the supporting disc is provided with a steel band disc, the bottom of the steel band disc is provided with a forklift hole, the center of the steel band disc is provided with a limiting protrusion, the limiting protrusion is detachably arranged on the steel band disc, and the technical scheme is characterized in that the steel band disc is conveniently conveyed to a stamping machine tool through a steel band feeding device to be used for producing a bracket, and meanwhile, when the steel band is replaced, the steel band is directly mechanically operated by a forklift, and only one person is required to replace the steel band.
The Chinese patent with the bulletin number of CN202156812U discloses a steel belt feeding roller support, which comprises a seesaw frame arranged on the seesaw frame support, an upper roller arranged at one end of the seesaw frame and two rollers arranged on the lower roller support, wherein a balancing weight is arranged on the seesaw frame and is in sliding connection with the seesaw frame, a motor is arranged at one end of the seesaw frame and is in transmission connection with the balancing weight, the motor is in transmission connection with the balancing weight through a screw rod, and the output end of the screw rod connected between the motor and the balancing weight is inserted into a shaft sleeve on the seesaw frame through a mating block. The balancing weight is arranged on the teeterboard frame, and the balancing weight is adjusted through the motor and the screw rod, so that the tensioning or loosening operation of the adjusting steel belt is simpler and more convenient, and the efficiency and the safety are improved.
However, the foregoing prior art does not ensure both self-adaptation of the feeding speed and constant tension, so that the problem of avoiding the wrinkles and twisting of the edges of the strip, which are necessary for forming the precise hose, cannot be properly solved.
Disclosure of Invention
The invention aims at: aiming at the problems existing in the prior art, the self-adaptive thin steel belt constant-tension self-adaptive feeder is provided, which can simultaneously ensure the self-adaptation of the feeding speed and the constant tension, and has a simple structure, thereby effectively avoiding the folds and the twists of the edges of the strip materials and providing a guarantee for the welding procedure of the molding of the precise hose.
In order to achieve the purpose, the thin steel strip constant tension self-adaptive feeder of the invention has the following basic technical scheme: comprises a rotating unit and a servo control unit, wherein the rotating unit is arranged on a horizontal rack and used for placing reel steel belts; one side of the horizontal frame is provided with a three-dimensional adjusting unit through a steering frame fixedly connected with the horizontal frame, the other side of the horizontal frame is provided with a speed self-adaptive unit, and the output end of the speed self-adaptive unit is provided with a steel belt guiding leveling unit;
the three-dimensional adjusting unit consists of three-stage screw-nut mechanisms which are mutually perpendicular and overlapped layer by layer, and a vertical steering roller is arranged at the top of the three-dimensional adjusting unit;
the rotating unit comprises a rotating shaft supported in the middle of the horizontal frame, and the lower end of the rotating shaft is in transmission connection with a servo power system controlled by the servo control unit through a transmission mechanism; the upper end of the rotating shaft is provided with a tray for placing stacked coiled steel strips;
the speed self-adaptive unit comprises a vertical frame, wherein a vertical guide rail and a floating base forming a vertical moving pair with the vertical guide rail are arranged on the inner side of the vertical frame, a tension balancing weight and a floating roller are arranged on the floating base, and an inlet guide roller and an outlet guide roller are respectively arranged on two sides of the vertical frame; the lower parts of the inlet guide roller and the outlet guide roller are respectively provided with a strip sensor for monitoring the passing of the steel strip and a magnetic suspension displacement sensor for detecting the floating roller; the signal output ends of the strip sensor and the magnetic suspension displacement sensor are connected with the controlled end of the servo power system through a servo control unit;
the steel belt guiding leveling unit mainly comprises an upper leveling plate and a lower leveling plate with adjustable intervals and inlet guiding chamfers, and guiding bearings distributed at intervals are respectively arranged on two sides of the upper leveling plate and two sides of the lower leveling plate.
The basic feeding process of the thin steel belt constant tension self-adaptive feeder comprises the following steps:
1) Placing the strip on a feeding turntable by using a forklift, enabling the strip to sequentially pass through a three-dimensional adjusting unit, a speed self-adaptive unit and a guiding leveling unit, and finally entering a strip traction mechanism;
2) Adjusting the upper and lower parts, the horizontal and the inclination angles of the three-dimensional adjusting unit to smoothly twist the strip from vertical to horizontal, and enabling the strip to enter the upper roller surface of the guiding roller of the speed self-adaptive unit;
3) Adjustment ofEach roller flange restrains the lateral movement of the strip, starts the servo control unit to control the feeding movement, starts the strip traction mechanism and follows the traction speedV Traction And the change of the radius of the strip, the servo control unit adjusts and controls the servo power system in real time according to the change difference of the sensing signals of the magnetic suspension sensor and the strip sensor, and correspondingly changes the rotating speed of the rotating unit, thereby realizing the feeding speedV Feeding material And traction speedV Traction And constant tension control realized by the tension balancing weight.
Therefore, the invention properly solves the problems of self-adaption of feeding speed and constant tension in the process of conveying the strip by a relatively simple structure, thereby effectively avoiding the folds and the twists of the edge of the strip and providing reliable guarantee for the welding process of forming the precise hose.
The invention is embodied as follows:
the three-dimensional adjusting unit (2) comprises a fixed base (209) fixedly connected with the steering rack, a vertical guide rod and a vertical screw rod are arranged on the fixed base, the vertical guide rod and the sliding seat form a vertical moving pair, the vertical screw rod and a nut on the sliding seat form a vertical spiral pair, and an upper and lower adjusting hand wheel (207) is arranged at the upper end of the vertical screw rod; the sliding seat is provided with a horizontal linear guide rail (203) and a transmission screw rod (201), the linear guide rail and a screw rod sliding block (202) form a horizontal moving pair, the transmission screw rod and a nut on the screw rod sliding block form a horizontal direction screw pair, and one end of the transmission screw rod and one end of the nut on the screw rod sliding block are provided with a horizontal adjusting hand wheel (208); the screw rod sliding block is provided with a steering roller (206) through an inclination angle adjusting structure (205), the inclination angle adjusting structure is composed of a horizontal screw pair perpendicular to the linear guide rail, one end of a screw rod of the horizontal screw pair is provided with an inclination angle adjusting hand wheel (204), and a vertical steering roller is arranged on the movable nut component; thereby forming a three-dimensional adjusting mechanism of the steering roller.
The rotating unit (3) comprises a rotating shaft base (303) fixed in the middle of the horizontal frame and a rotating shaft (305) arranged in the center of the base, wherein the lower end of the rotating shaft is fixedly connected with a large synchronous pulley (304) and is in transmission connection with a small synchronous pulley (307) driven by the servo power system (5) through a speed reducer (308) through a synchronous belt (306); the upper end of the rotating shaft is fixedly connected with a rotating material tray (301), and a tray (302) for placing stacked coiled steel strips (4) is arranged on the rotating material tray.
The speed self-adaptive unit (7) comprises a stand formed by a base (701) and a unit frame (705) supported by a rib plate (702), wherein a vertical guide rail (706) and a floating base (704) forming a vertical moving pair with the vertical guide rail are arranged on the inner side of the stand, a tension balancing weight (711) and a floating roller (713) are arranged on the floating base, and an inlet guide roller (709) through which a steel belt (708) passes when being input and an outlet guide roller (710) through which the steel belt passes when being output after passing by the floating roller are respectively arranged on two sides of the stand; the bottom end of the vertical guide rail is provided with a hydraulic buffer mechanism (703) which can prevent the rigid impact when the floating roller falls to the lower limit position; and a strip sensor (707) for monitoring the passing of the steel strip and a magnetic suspension displacement sensor (712) for detecting the floating roller are respectively arranged below the inlet guide roller and the outlet guide roller.
The invention is further perfected that the bottom end of the vertical guide rail is provided with a hydraulic buffer mechanism; the hydraulic buffer mechanism consists of a bottom plate fixed with the unit frame, a supporting plate fixedly connected with the bottom plate through a connecting bolt, and a hydraulic buffer fixed on the supporting plate through a locking nut.
The invention is further perfected in that the floating base comprises a floating sliding block with a guide rail bayonet, a mandrel base fixedly connected with the floating sliding block through a base plate and a horizontal mandrel fixedly connected with the mandrel base.
The invention is further perfected that the floating roller consists of a roller barrel which is movably sleeved on a mandrel and is provided with a strip flange; the inlet guide roller and the outlet guide roller respectively comprise a side base and an installation base which are fixedly connected with each other and are installed in a guide groove of the unit frame through connecting bolts, the installation base supports a mounting mandrel through mandrel locking bolts, a guide roller body is sleeved on the mandrel, and strip check rings are installed at two ends of the guide roller body through locking bolts respectively.
The invention is further perfected that the base plate is fixedly connected with the counterweight monomer through the counterweight base, one end of the counterweight monomer is provided with a connecting pin, and the other end of the counterweight monomer is provided with a jack matched with the connecting pin.
The invention is further perfected that the front part and the rear part of the upper pressing plate and the front part and the rear part of the lower pressing plate are embedded with felts.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the working principle of the embodiment of FIG. 1;
FIG. 3 is a schematic diagram of a three-dimensional adjustment unit in the embodiment of FIG. 1;
FIG. 4 is a schematic view of the steel belt rotating unit, frame and power system configuration of the embodiment of FIG. 1;
FIG. 5 is a schematic diagram of the adaptive unit in the embodiment of FIG. 1;
FIG. 6 is a schematic diagram of the hydraulic buffer structure of the adaptive unit in the embodiment of FIG. 1;
FIG. 7 is a schematic view of the adaptive unit dancer, slider mount, magnetic suspension and counterweight configuration of the embodiment of FIG. 1;
FIG. 8 is a schematic view of the weight in the embodiment of FIG. 1;
FIG. 9 is a schematic view of the guide roller structure of the embodiment of FIG. 1;
fig. 10 is a schematic view of the outfeed leveling guide arrangement of the embodiment of fig. 1.
Detailed Description
The invention is further explained below with reference to the drawings.
Example 1:
the constant tension self-adaptive feeder for the thin steel strip basically comprises a rotating unit 3 which is arranged on a horizontal frame 6 and used for placing a reel steel strip 4, a three-dimensional adjusting unit 2 is arranged on one side of the horizontal frame through a steering frame 1 fixedly connected with the rotating unit, a speed self-adaptive unit 7 is arranged on the other side of the horizontal frame, and a steel strip guiding leveling unit 8 is arranged at the output end of the speed self-adaptive unit.
As shown in fig. 3, the three-dimensional adjusting unit 2 comprises a fixed base 209 fixedly connected with the steering frame, wherein a vertical guide rod and a vertical screw rod are arranged on the fixed base, the vertical guide rod and a sliding seat form a vertical moving pair, the vertical screw rod and a nut on the sliding seat form a vertical spiral pair, and an upper and lower adjusting hand wheel 207 is arranged at the upper end of the vertical screw rod; the slide seat is provided with a horizontal linear guide rail 203 and a transmission screw rod 201, the linear guide rail and a screw rod sliding block 202 form a horizontal moving pair, the transmission screw rod and a nut on the screw rod sliding block form a horizontal direction screw pair, and one end of the transmission screw rod and one end of the nut on the screw rod sliding block are provided with a horizontal adjusting hand wheel 208; the screw rod slide block is provided with a steering roller 206 through an inclination angle adjusting structure 205, the inclination angle adjusting structure is composed of a horizontal spiral pair vertical to the linear guide rail, one end of a screw rod of the horizontal spiral pair is provided with an inclination angle adjusting hand wheel 204, and the movable nut component is provided with the steering roller; thereby forming a three-dimensional adjusting mechanism of the steering roller;
the rotating unit 3 is shown in fig. 4, and comprises a rotating shaft base 303 fixed in the middle of the horizontal frame and a rotating shaft 305 arranged in the center of the base, wherein the lower end of the rotating shaft is fixedly connected with a large synchronous pulley 304 and is in transmission connection with a small synchronous pulley 307 of the servo power system 5 through a synchronous belt 306 and driven by a speed reducer 308; the upper end of the rotating shaft is fixedly connected with a rotating material tray 301, and a tray 302 for placing the stacked coiled steel strips 4 is arranged on the rotating material tray; thereby, the stacked coiled steel strip placed on the rotary tray by the forklift can rotate according to the servo movement instruction.
As shown in fig. 5, the speed self-adaptive unit 7 comprises a stand formed by a base 701 and a rib plate 702 supporting a unit frame 705, wherein the inner side of the stand is provided with a vertical guide rail 706 and a floating base 704 forming a vertical moving pair with the vertical guide rail 706, the floating base is provided with a tension balancing weight 711 and a floating roller 713, and the two sides of the stand are respectively provided with an inlet guide roller 709 passing by when a steel belt 708 is input and an outlet guide roller 710 passing by when the steel belt passes by the floating roller and is output; the bottom end of the vertical guide rail is provided with a hydraulic buffer mechanism 703 which can prevent the rigid impact when the floating roller falls to the lower limit position; a strip sensor 707 for monitoring the passage of the steel strip and a magnetic levitation displacement sensor 712 for detecting the floating roller are respectively arranged below the inlet guide roller and the outlet guide roller. The signal output ends of the strip sensor and the magnetic suspension displacement sensor are connected with the controlled end of the servo power system through the servo control unit.
As shown in fig. 6, the hydraulic buffer mechanism 703 is configured by a bottom plate 7031 fixed to the unit frame, a support plate 7033 fixed to the bottom plate by a connecting bolt 7032, and a hydraulic buffer 7035 fixed to the support plate by a lock nut 7034. The installation position of the hydraulic buffer can be adjusted up and down through the adjusting screw thread on the hydraulic buffer, so that the buffer position and the buffer acting force are finely adjusted.
As shown in fig. 7 and 8, the floating base 704 includes a floating slider 7043 having a rail bayonet, a spindle base 7041 fixedly connected to the floating slider through a base plate 7042, and a horizontal spindle 7131 fixedly connected to the spindle base; is constrained by the vertical guide rail to slide up and down. The dancer 713 is comprised of a roller 7133 that is looped over a mandrel 7131 with a web flange 7132 that floats up and down with the web. The base plate 7042 is fixedly connected with the counterweight monomer 7112 through the counterweight base 7111, one end of the counterweight monomer is provided with a connecting pin 7113, and the other end of the counterweight monomer is provided with an inserting hole matched with the connecting pin, so that the tension control of the feeding process of the belt material can be controlled by gradually increasing and decreasing the counterweight monomer according to the requirement. The magnetic suspension sensor 712 comprises a magnetic suspension slider 7122 fixedly connected with a base plate 7042 through a bracket 7121, and can float up and down along with a floating unit and feed back a real-time position to a motion control system so as to realize feeding speed self-adaption and tension constant control.
As shown in fig. 9, the inlet guide roller 709 comprises a side base 7092 and a mounting base 7094 which are fixedly connected with each other and are mounted in a guide groove of the unit frame 705 through connecting bolts 7091, the mounting base is tightly supported by a mounting mandrel 7093 through mandrel locking screws 7096, a guide roller body 7097 is sleeved on the mandrel, two ends of the guide roller body are respectively provided with a strip retainer ring 7095 through locking screws 7098, and the feeding height of the strip 708 can be adjusted in an up-down adaptive manner. The structure of the exit guide roller 710 is similar to that of the entrance guide roller, and will not be described again.
As shown in fig. 10, the steel belt guiding and leveling unit 8 comprises an upper fixing plate 804 and a lower fixing plate 808 with adjustable intervals, wherein the opposite surfaces of the upper fixing plate and the lower fixing plate are respectively provided with an upper pressing plate 802 and a lower pressing plate 803, the inlets of the upper fixing plate and the lower fixing plate are respectively provided with guiding bearings 807 distributed on two sides of the upper pressing plate and the lower pressing plate at intervals, and felt 805 is embedded in the front part and the rear part of the upper pressing plate and the front part and the rear part of the lower pressing plate. Therefore, the feeding strips 801 with different thicknesses can be adjusted by means of the adjusting handwheels 806, the stable feeding of the strips is ensured under the limit guidance of the guide bearing which is matched with the width of the feeding strips, and dust and dirt adhered on the surfaces of the strips are effectively removed.
The working principle of the thin steel belt constant tension self-adaptive feeder and the service conditions of each device are as follows:
the steel belt is placed on the tray in a coil stacking mode, the steering rack rotates outwards by 90 degrees and drives the three-dimensional adjusting unit to rotate, the tray is placed on the rotary tray from the inlet of the tail end by using a forklift, the steering rack is reset, the uppermost coil of the steel belt is disassembled, the end part of the steel belt sequentially passes through the rear roller surface of the steering roller, the upper roller surface of the inlet guide roller, the lower roller surface of the floating roller, the upper roller surface of the outlet guide roller and the guide leveling unit, and then enters the steel belt traction unit 9.
Referring to fig. 3, the three-dimensional adjusting unit and the speed self-adaptive unit shown in fig. 5, the steel strip realizes vertical-horizontal conversion through the steering roller and the inlet guide roller, the adjusting hand wheel 207 drives the mechanism to move up and down so as to avoid interference and smooth steering between the strip conveying process and the steel coil, the adjusting hand wheel 208 drives the mechanism to move horizontally so as to enable the strip and the strip traction mechanism to be positioned at the same center line, and the adjusting hand wheel 204 changes the inclination angle of the steering roller so as to obtain better fitting degree with the strip. Regulating the edges of the inlet guide roller, the outlet guide roller and the floating roller to restrict the horizontal movement of the strip; adjusting the guiding flattening unit hand wheel 806 adjusts the gap between the upper flattening plate and the strip to flatten and remove the strip dirt. By adjusting the flanges of the rollers, the upper and lower gaps of the guiding leveling units and the constraint in the horizontal direction, the self-adaptive feeding of thin strips with various specifications can be realized.
Referring to the schematic diagram of the constant-tension self-adaptive feeding principle of the steel belt in fig. 2, the initial state of the feeding machine is shown, the floating roller is arranged on the lowest hydraulic buffer mechanism under the action of the balancing weight, and the belt traction mechanism drives the belt to pull at a traction speed after the operation is startedV Traction The floating roller, the tension balancing weight and the magnetic suspension sliding block are driven to float upwards along the guide rail along with the sliding block to carry out magnetic suspensionThe sensor mechanism feeds back the position signal transmitted by the magnetic suspension sliding block to the motion control system of the servo control unit in real time, generates a rotation speed from small to large according to the displacement calculation transmitted by each position of the displacement sensor from bottom to top in the motion control system, transmits the rotation speed to the servo control unit to drive the servo motor to rotate, and increases the rotation speed of the servo motor along with the upward movement process of the floating roller until the feeding speed generated by the rotation speedV Feeding material Traction speed with steel belt traction unitV Traction Maintaining the rotational speed and dancer position in unison, as the radius of the steel strip-consuming reel decreases, in order to maintain feed rateV Feeding material And traction speedV Traction The same way, the floating roller gradually floats upwards to increase the rotating speed of the servo motor to reach the balance state, and the high-speed response characteristic of the servo system can just solve the problem; the system will depend on the towing speedV Traction And the speed of the steel belt disc is adaptively changed, and meanwhile, the tension of the steel belt in the feeding process is kept constant.
Taking stainless steel DN10 corrugated pipe forming line feeding as an example, the equipment is adopted to feed stainless steel strips, 6-7 rolls of SUS304 stainless steel strips with the width of 38mm, the wall thickness of 0.2mm and the initial diameter of a reel of 1000mm are selected, and the feeding speed is 2.6m/min.
1. Firstly, turning a steering frame outwards by 90 degrees, placing about 1.5 tons of SUS304 stainless steel strips in 6-7 rolls on a feeding turntable by using a forklift and a tray, and resetting the steering frame;
2. cutting off the uppermost strip coil oil paper of the strip along the inner side of the strip coil, and enabling the end part of the extracted strip to sequentially pass through the rear roller surface of the steering roller, the upper roller surface of the inlet guide roller, the lower roller surface of the floating roller, the upper roller surface of the outlet guide roller and the strip guide leveling mechanism to enter the strip traction mechanism;
3. adjusting the vertical, horizontal and inclination angles of the three-dimensional adjusting unit to smoothly perform vertical-horizontal torsion on the strip, increasing the contact between the strip and the roll surface of the steering roll, and enabling the strip to be positioned on a feeding central line;
4. the flange spacing of each roller is adjusted to be 38-38.5 mm; adjusting the upper and lower gaps of the strip guiding and leveling unit to be preferably 0.21-0.22mm, and adjusting the guiding bearings to be in contact with the steel strip to rotate along with the strip;
5. adjusting the self-adaptive unit balancing weight, wherein a piece of 2kg balancing weight is adopted, and the proper tension of the strip is taken into consideration;
6. starting the self-adaptive feeding system and starting the belt traction mechanism of the forming production line to realize the feeding speedV Feeding material At a matched strip draw speed of 2.6m/minV Traction 。
Summarizing, the thin steel strip constant tension self-adaptive feeder of the embodiment has the following advantages:
1. the constant tension self-adaptive process is adopted to feed the corrugated pipe forming strip, the speed self-adaptive technology is combined with the tension control technology, so that the steady speed control and the constant tension control of the thin steel strip can be realized, the welding quality is effectively improved, compared with the traditional feeding process, the self-adaptive feeding adopts speed automatic matching, the problems of speed mismatch, strip tension non-constant, strip edge fold and strip deformation are solved, and the efficiency is high, the feeding is stable, and the tension is constant.
2. The high-strength bearing structure is adopted, the bearing capacity of a single disc can reach more than 2 tons, the rotating support and the three-dimensional adjusting mechanism only need to be rotated to one side during feeding, the tray and 6-8 disc steel belts can be integrally placed on the rotating disc by adopting a forklift from the tail end, and the feeding and belt changing speed is greatly improved.
3. The three-dimensional adjusting unit is utilized to rotate the adjusting screw rod by utilizing the hand wheel, the linear guide rail drives the belt material to move up and down and horizontally, the belt material is simultaneously matched with the steering roller to rotate horizontally from the vertical direction, the inclination angle of the steering roller can be adjusted in the process, the bonding degree of the belt material and the roller surface is increased, and the adjusting mode is simple and convenient, can realize on-line adjustment, and lightens the labor intensity.
4. The speed self-adaptive unit is provided with two horizontal guide rollers according to the flow direction of the steel belt, one horizontal floating roller is connected with the tension counterweight mechanism and the magnetic suspension sensor, the floating mechanism slides up and down along with the sliding block on the linear guide rail, the self-adaptive speed is fed back to the motion controller in real time through the displacement sensor, the rotating speed of the turntable is controlled to match the traction speed, and the feeding precision and the speed self-adaptation are effectively improved; meanwhile, the purpose of constant tension in the feeding process can be achieved by adding the balancing weights by utilizing the symmetry of the three rollers.
5. The servo motor and the speed reducing mechanism provide power for the system, the motion control unit ensures the accurate control of the whole system, and the discharge port steel belt leveling and guiding mechanism can effectively ensure the flatness and stability of the discharge belt. The strip feeding device can adapt to strip feeding with different thickness and width by adjusting the steering roller, the guide roller, the floating roller and the guide mechanism limiting device.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (8)
1. A constant-tension self-adaptive feeder for thin steel strips comprises a rotating unit (3) and a servo control unit, wherein the rotating unit (3) is arranged on a horizontal frame (6) and is used for placing coiled steel strips (4); the method is characterized in that: one side of the horizontal frame is provided with a three-dimensional adjusting unit (2) through a steering frame (1) fixedly connected with the horizontal frame, the other side of the horizontal frame is provided with a speed self-adaptive unit (7), and the output end of the speed self-adaptive unit is provided with a steel belt guiding leveling unit (8);
the three-dimensional adjusting unit (2) is composed of three-stage screw-nut mechanisms which are mutually vertical and overlapped layer by layer, and a vertical steering roller is arranged at the top of the three-dimensional adjusting unit;
the rotating unit (3) comprises a rotating shaft (305) supported in the middle of the horizontal frame, and the lower end of the rotating shaft is in transmission connection with a servo power system (5) controlled by the servo control unit through a transmission mechanism; the upper end of the rotating shaft is provided with a tray (302) for placing stacked coiled steel strips (4);
the speed self-adaptive unit (7) comprises a vertical frame, a vertical guide rail (706) and a floating base (704) forming a vertical moving pair with the vertical guide rail are arranged on the inner side of the vertical frame, a tension balancing weight (711) and a floating roller (713) are arranged on the floating base, and an inlet guide roller (709) and an outlet guide roller (710) are respectively arranged on two sides of the vertical frame; a strip sensor (707) for monitoring the passing of the steel strip and a magnetic suspension displacement sensor (712) for detecting the floating roller are respectively arranged below the inlet guide roller and the outlet guide roller; the signal output ends of the strip sensor and the magnetic suspension displacement sensor are connected with the controlled end of the servo power system through a servo control unit;
the steel belt guiding leveling unit (8) mainly comprises an upper pressing plate (802) and a lower pressing plate (803) with adjustable intervals and inlet guiding chamfers, wherein guiding bearings (807) are respectively arranged on two sides of the upper pressing plate and the lower pressing plate at intervals; the three-dimensional adjusting unit (2) comprises a fixed base (209) fixedly connected with the steering rack, a vertical guide rod and a vertical screw rod are arranged on the fixed base, the vertical guide rod and the sliding seat form a vertical moving pair, the vertical screw rod and a nut on the sliding seat form a vertical spiral pair, and an upper and lower adjusting hand wheel (207) is arranged at the upper end of the vertical screw rod; the sliding seat is provided with a horizontal linear guide rail (203) and a transmission screw rod (201), the linear guide rail and a screw rod sliding block (202) form a horizontal moving pair, the transmission screw rod and a nut on the screw rod sliding block form a horizontal direction screw pair, and one end of the transmission screw rod and one end of the nut on the screw rod sliding block are provided with a horizontal adjusting hand wheel (208); the screw rod sliding block is provided with a steering roller (206) through an inclination angle adjusting structure (205), the inclination angle adjusting structure is composed of a horizontal screw pair perpendicular to the linear guide rail, one end of a screw rod of the horizontal screw pair is provided with an inclination angle adjusting hand wheel (204), and a vertical steering roller is arranged on the movable nut component; thereby forming a three-dimensional adjusting mechanism of the steering roller.
2. The thin steel strip constant tension adaptive feeder of claim 1, wherein: the rotating unit (3) comprises a rotating shaft base (303) fixed in the middle of the horizontal frame and a rotating shaft (305) arranged in the center of the base, wherein the lower end of the rotating shaft is fixedly connected with a large synchronous pulley (304) and is in transmission connection with a small synchronous pulley (307) driven by the servo power system (5) through a speed reducer (308) through a synchronous belt (306); the upper end of the rotating shaft is fixedly connected with a rotating material tray (301), and a tray (302) for placing stacked coiled steel strips (4) is arranged on the rotating material tray.
3. The thin steel strip constant tension adaptive feeder of claim 1, wherein: the speed self-adaptive unit (7) comprises a stand formed by a base (701) and a unit frame (705) supported by a rib plate (702), wherein a vertical guide rail (706) and a floating base (704) forming a vertical moving pair with the vertical guide rail are arranged on the inner side of the stand, a tension balancing weight (711) and a floating roller (713) are arranged on the floating base, and an inlet guide roller (709) through which a steel belt (708) passes when being input and an outlet guide roller (710) through which the steel belt passes when being output after passing by the floating roller are respectively arranged on two sides of the stand; the bottom end of the vertical guide rail is provided with a hydraulic buffer mechanism (703) which can prevent the rigid impact when the floating roller falls to the lower limit position; and a strip sensor (707) for monitoring the passing of the steel strip and a magnetic suspension displacement sensor (712) for detecting the floating roller are respectively arranged below the inlet guide roller and the outlet guide roller.
4. The thin steel strip constant tension adaptive feeder of claim 1, wherein: the bottom end of the vertical guide rail is provided with a hydraulic buffer mechanism (703); the hydraulic buffer mechanism (703) is composed of a bottom plate (7031) fixed with the unit frame, a supporting plate (7033) fixedly connected with the bottom plate through a connecting bolt (7032), and a hydraulic buffer (7035) fixed on the supporting plate through a locking nut (7034).
5. The constant tension adaptive feeder for thin steel strip according to any one of claims 1 to 4, wherein: the floating base (704) comprises a floating sliding block (7043) with a guide rail bayonet, a mandrel base (7041) fixedly connected with the floating sliding block through a base plate (7042) and a horizontal mandrel (7131) fixedly connected with the mandrel base.
6. The constant tension adaptive feeder of thin steel strip as claimed in claim 5, wherein: the dancer (713) is formed by a roller (7133) that is looped over a horizontal mandrel (7131) with a web flange (7132); the inlet guide roller (709) and the outlet guide roller respectively comprise a side base (7092) and a mounting base (7094) which are fixedly connected with each other and are mounted in a guide groove of a unit frame (705) through connecting bolts (7091), the mounting base supports a mounting mandrel (7093) through mandrel locking screws (7096), a guide roller body (7097) is sleeved on the mandrel, and strip check rings (7095) are mounted at two ends of the guide roller body through locking screws (7098) respectively.
7. The constant tension adaptive feeder of thin steel strip as claimed in claim 6, wherein: the base plate (7042) is fixedly connected with a counterweight monomer (7112) through a counterweight base (7111), one end of the counterweight monomer is provided with a connecting pin (7113), and the other end of the counterweight monomer is provided with an inserting hole matched with the connecting pin.
8. The constant tension adaptive feeder of thin steel strip as claimed in claim 7, wherein: the front and rear parts of the upper platen and the front and rear parts of the lower platen are embedded with felts (805).
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| CN201811569034.7A CN109484889B (en) | 2018-12-21 | 2018-12-21 | Constant-tension self-adaptive feeder for thin steel strip |
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| CN201811569034.7A CN109484889B (en) | 2018-12-21 | 2018-12-21 | Constant-tension self-adaptive feeder for thin steel strip |
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| CN112660931B (en) * | 2020-12-17 | 2022-07-12 | 湖南东映碳材料科技有限公司 | Device and method for applying tension in carbon fiber traction process |
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