Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and a kind of reasonable in design is provided, steel wire line sending speed can be regulated to control the numerical control curved line production line of steel wire tightness.
The present invention's adopted technical scheme that solves the problem is: this numerical control curved line production line, it is characterized in that: comprise wire bending machine and paying out machine, described wire bending machine comprises frame, bar straightening mechanism, wire agency, head and control unit, described paying out machine comprises base, rotating disc, unwrapping wire motor and two wheel brackets, described rotating disc is rotatably installed on base, unwrapping wire motor drives rotating disc to rotate, one end of wheel bracket is hinged on base, the other end of wheel bracket is rotatablely equipped with guide wheel, the hinged place of wheel bracket and base arranges the sensor detecting the wheel bracket anglec of rotation, unwrapping wire motor and sensor connection control unit.
When line sending, place steel wire on the rotating pan to wear on guide wheel and to be sent to wire bending machine, make somebody a mere figurehead the steel wire spirality on wheel bracket, the steel wire trailed can make wheel bracket tilt certain angle, this angle is relevant with the tightness of wire loop, the radius of the wire loop trailed is less, pulling force required for wire loop is larger, wheel bracket angle change is larger, sensor can detect the anglec of rotation of wheel bracket, and send control unit to, control unwrapping wire electric machine rotation, the radius of wire loop becomes large, reduce the pulling force that Wire-feeding machine draws steel wire to need.
As preferably, head of the present invention comprises headstock, gear-box, mould, mould free-wheeling system, mould telescoping mechanism and shearing mechanism, described headstock is fixed in frame, gear-box is fixed on headstock, mould comprises bending die head and die head seat, described mould free-wheeling system comprises die head motor, die head gear, internal axle sleeve and outer shaft, described bending die head is fixed on die head seat, one end of die head seat and internal axle sleeve is fixed, internal axle sleeve and outer shaft pass through spline joint, die head gear is fixed on outer shaft, outer shaft is rotatably installed in gear-box by bearing, die head motor is connected by gear drive with die head gear, mould telescoping mechanism comprises telescopic cylinder, the other end of internal axle sleeve is connected with telescopic cylinder, shearing mechanism comprises scissors, scissors shaft, shear(ing) die and cut off oil cylinder, described scissors is fixedly connected with scissors shaft, described scissors shaft with cut off oil cylinder and be connected, described shear(ing) die and gear-box are fixed, wire guide is offered in shear(ing) die, wire guide is connected with conduit, scissors is arranged on the exit of wire guide, the center of die head seat offers through hole, described scissors is arranged in through hole, cut off oil cylinder, die head motor, telescopic cylinder is all fixed in gear-box, cut off oil cylinder, die head motor, telescopic cylinder connection control unit.
Scissors is arranged on the exit of wire guide, and scissors is arranged on the center of die head seat, and the product bent can directly be cut off by promoting scissors, decrease and steel wire is retracted and the step of cutting off, save the time, and avoided that to cut off position long, the problem of waste of material.
As preferably, wire agency of the present invention comprises clamping frame, lower clamping frame, fixing Wire Wheel, adjustable Wire Wheel, locking cylinder and line sending motor, fixing Wire Wheel is rotatably installed on lower clamping frame, adjustable Wire Wheel is rotatably installed on clamping frame, fixing Wire Wheel is connected by gear drive with adjustable Wire Wheel, fixing Wire Wheel is connected by belt transmission with line sending motor, the cylinder body of described locking cylinder is fixedly connected with lower clamping frame, the piston rod of locking cylinder is fixedly connected with upper clamping frame, described line sending motor and locking cylinder are connected with control unit.
By controlling locking cylinder, automatically can control wire agency and fix pressure between Wire Wheel and adjustable Wire Wheel, thus better control gives the coupling mechanism force of steel wire, avoid line sending apart from inaccurate situation, and locking cylinder is positioned at the below of clamping frame, adopting pulls the mode of clamping frame to lock, and makes the volume of equipment compacter.
As preferably, gear-box of the present invention is also fixed with workbench, head angle of inclination is with respect to the horizontal plane 70 degree of-90 degree.Adopt head and the workbench of oblique setting, the product bent can be made, directly drop, improve practicality.
As preferably, in the present invention, the center line Central Symmetry distribution of two relative rotating discs of wheel bracket, every root wheel bracket is provided with altogether two guide wheels, fixed mounting on described base, the lower end of wheel bracket is rotatably installed on mount pad, and the side of wheel bracket is fixed with the first stator, mount pad is fixed with the second stator, the second stator is fixed with pressure sensor or touch switch.
Along with built on stilts steel wire radius constantly diminishes, required pulling force constantly becomes large, and drive wheel bracket to be mounted opposite seat rotation, distance between first stator and the second stator changes, trigger sensor generation signal, control paying out machine and carry out unwrapping wire action, helical wire loop radius becomes large, and required pulling force is corresponding to diminish.When employing pressure sensor, along with the distance between the first stator and the second stator diminishes, the pressure that pressure sensor is experienced constantly becomes large, when reaching the threshold value of setting, controlling paying out machine and carrying out unwrapping wire action.Adopt the setting of this sensor, the pressure threshold can tackling setting mutually adjusts.When adopting touch switch as sensor, distance between first stator and the second stator constantly reduces, and when wheel bracket inclination certain angle, the first stator contacts the touch switch on the second stator, touch switch generation signal, controls paying out machine and carries out unwrapping wire action.Adopt this kind of sensor construction, cost is low, and structure is simple.
As preferably, telescopic cylinder of the present invention adopts circular cylinder, and the center line of circular cylinder and the axial line of scissors shaft overlap, and adopts this structure to improve the compactedness of structure.
The present invention compared with prior art, has the following advantages and effect: simple and reasonable, to solve the adjustment of line sending pulling force problem, has saved process time, has improve product quality.
Detailed description of the invention
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
See Fig. 1, the present embodiment numerical control curved line production line, comprises wire bending machine and paying out machine 3, and wire bending machine comprises frame, bar straightening mechanism, wire agency 2, head 1 and control unit.
Participate in Fig. 2-Fig. 4, paying out machine 3 comprises base 31, rotating disc 32, unwrapping wire motor and two wheel brackets 33, rotating disc 32 is rotatably installed on base 31, unwrapping wire motor drives rotating disc 32 to rotate, the center line Central Symmetry distribution of two relative rotating discs 32 of wheel bracket 33, every root wheel bracket 33 is rotatablely equipped with two guide wheels 38, fixed mounting 35 on base 31, the lower end of wheel bracket 33 is rotatably installed on mount pad 35, the side of wheel bracket 33 is fixed with the first stator 36, mount pad 35 is fixed with the second stator 37, second stator 37 is fixed with the pressure sensor or touch switch that detect wheel bracket 33 anglec of rotation.Unwrapping wire motor and sensor (pressure sensor or touch switch) connection control unit.
Participate in Fig. 5-Fig. 6, in the present embodiment, head 1 comprises headstock 11, gear-box 12, mould, mould free-wheeling system, mould telescoping mechanism and shearing mechanism, headstock 11 is fixed in frame, gear-box 12 is fixed on headstock 11, mould comprises bending die head 13 and die head seat 14, mould free-wheeling system comprises die head motor 15, die head gear 16, internal axle sleeve 17 and outer shaft 18, bending die head 13 is fixed on die head seat 14, one end of die head seat 14 and internal axle sleeve 17 is fixed, internal axle sleeve 17 and outer shaft 18 pass through spline joint, thus realize internal axle sleeve 17 and outer shaft 18 in the axial direction can relative sliding, die head gear 16 is fixed on outer shaft 18, outer shaft 18 is rotatably installed in gear-box 12 by bearing, die head motor 15 is connected by gear drive with die head gear 16, mould telescoping mechanism comprises telescopic cylinder 19, the other end of internal axle sleeve 17 is connected with telescopic cylinder 19, shearing mechanism comprises scissors 110, scissors shaft 111, shear(ing) die and cut off oil cylinder 115, scissors 110 is fixedly connected with scissors shaft 111, scissors shaft 111 with cut off oil cylinder 115 and be connected, shear(ing) die and gear-box 12 are fixed, wire guide 112 is offered in shear(ing) die, wire guide 112 is connected with conduit 113, scissors 110 is arranged on the exit of wire guide 112, the center of die head seat 14 offers through hole, scissors 110 is arranged in through hole, cut off oil cylinder 115, die head motor 15, telescopic cylinder 19 is all fixed in gear-box 12, cut off oil cylinder 115, die head motor 15, telescopic cylinder 19 connection control unit.Telescopic cylinder 19 adopts circular cylinder, and the center line of telescopic cylinder 19 and the axial line of scissors shaft 111 overlap, and gear-box 12 is also fixed with workbench 114, and head 1 angle of inclination is with respect to the horizontal plane 80 degree.
Participate in Fig. 7-Fig. 9, wire agency 2 comprises clamping frame 21, lower clamping frame 22, line sending motor 23, two fixing Wire Wheels 24, two adjustable Wire Wheels 25 and two locking cylinders 26, fixing Wire Wheel 24 is rotatably installed on lower clamping frame 22, adjustable Wire Wheel 25 is rotatably installed on clamping frame 21, fixing Wire Wheel 24 is connected by gear drive with adjustable Wire Wheel 25, fixing Wire Wheel 24 is connected by belt transmission with line sending motor 23, the piston rod of locking cylinder 26 is fixedly connected with upper clamping frame 21, line sending motor 23 and locking cylinder 26 are connected with control unit.The cylinder body of locking cylinder 26 is fixed on the bottom surface of lower clamping frame 22, and the two ends of lower clamping frame 22 are respectively fixed with four pull bars 27, and upper pressed seat and pull bar 27 are slidably matched.
In the present embodiment, the above content described in this description is only made for the present invention illustrating.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of description of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.