A kind of cloth position regulator of Sewing machines
Technical field
The utility model belongs to sewing machine technique field, relates to a kind of cloth position regulator of Sewing machines.
Background technology
Major part in industrial sewing machines all belongs to general Sewing machines, and comprising flat seam machine, chain seam machine, quilting machines, overlock machine and flat seaming machine etc., and the utilization rate of flat seam machine is the highest.Along with the continuous adjustment of market and consumption structure, the industrial sewing machine of middle low speed can not meet Production requirement, and Sewing machines is just towards high speed, seriation future development, and electronics, computer technology are widely used on Sewing machines.Sewing machines needs cloth to move along setting path on cloth pushing table in the process of making, but owing to not intervening manually in the continuous moving process of cloth, therefore there will be the situation that cloth departs from setting path, affect work quality.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of cloth position regulator of Sewing machines, makes cloth get back on setting circuit when skew can appear in the cloth position regulator of this Sewing machines in cloth moving process.
The purpose of this utility model realizes by following technical proposal: a kind of cloth position regulator of Sewing machines, Sewing machines comprises cloth pushing table, it is characterized in that, described cloth pushing table upper side is fixed with backup plate, described backup plate have along cloth pushing table fore-and-aft direction arrange and for cloth against guide edge edge, described cloth position regulator comprises the swing seat of friction pulley and strip, described cloth pushing table is provided with and can detects that the sensor of skew occurs in cloth position, one end of described swing seat is hinged on cloth pushing table, above-mentioned friction pulley is hinged on the other end of swing seat, and the centerline direction of friction pulley is identical with the length direction on guide edge edge, described cloth pushing table is provided with when sensor detects that cloth position can drive swing seat to lower swing when there is skew and make friction pulley be pressed on actuator on cloth, described cloth pushing table is also provided with and can drives friction wheel from rotation when friction pulley is pressed on cloth and make cloth get back to power source on setting path.
Sewing machines also comprises casing, base, the parts such as controller, controller respectively with sensor, power source and actuator are connected, cloth pushing table is positioned on base, transfer for cloth, the direction of cloth transfer is the fore-and-aft direction of cloth pushing table, wherein guide edge is along exceeding cloth pushing table table top, when cloth is transferred, the edge of cloth can be resisted against on guide edge edge, namely cloth is along guide edge along the mobile setting path for cloth, when skew appears in cloth, namely cloth away from guide edge along or cross guide edge along time sensor can detect and send a signal to controller, controller controls actuator and power source action, concrete, when there is the skew away from guide edge edge in cloth, sensor sends signal to controller, controller controls actuator action, the free end of swing seat is declined, friction pulley compresses mutually with cloth, controller controls power source action further, friction pulley is rotated forward, frictional force between friction pulley and cloth can make cloth move and be close to guide edge edge, namely cloth is got back on setting path, actuator makes swing seat lift reset afterwards, in like manner, when there is the skew of crossing guide edge edge in cloth, sensor sends signal to controller, controller controls actuator action, the free end of swing seat is declined, friction pulley compresses mutually with cloth, controller controls power source action further, friction pulley is reversed, frictional force between friction pulley and cloth cloth can be made to move and get back to guide edge along against position, namely cloth is got back on setting path, actuator makes swing seat lift reset afterwards, total is simple, and the work quality of Sewing machines can be ensured.
In the cloth position regulator of above-mentioned Sewing machines, described sensor has two at least, and sensor is positioned at the top of cloth pushing table table top, and wherein at least one sensor is positioned at the side on guide edge edge, and at least one sensor is positioned at the opposite side on guide edge edge.Sensor is reflection sensor, wherein at least one is positioned at guide edge along the side towards cloth, namely when cloth is normally transferred, this sensor is positioned at the top of cloth, can detect that cloth is positioned at below it, when this sensor can't detect cloth, judge that the skew away from guide edge edge appears in cloth; At least one sensor is positioned at guide edge along opposite side, is namely positioned at above backup plate, and when cloth is normally transferred, this sensor is the existence that can't detect cloth, but when having cloth below detection expires, judges that the skew on guide edge edge appears crossing in cloth.
In the cloth position regulator of above-mentioned Sewing machines, described actuator comprises driving cylinder, the cylinder ends of described driving cylinder is hinged on cloth pushing table, and drives cylinder to be positioned at the below of swing seat, and piston rod end and the swing seat of described driving cylinder are hinged.The piston rod end fixed cover of cylinder is driven to be provided with connector, this connector is fixed with bearing pin, and by hinge in swing seat, drive the piston rod of cylinder can drive swing seat reciprocally swinging, in the swing process of swing seat, drive cylinder also can relatively swing by cloth pushing table, avoid stuck; Certain actuator can adopt the mode of electromagnet, be arranged on cloth pushing table by electromagnet, fixed iron piece in swing seat, and swing seat is arranged torsion spring, lifting status is there is at torsion spring effect lower swing seat, and absorption affinity can be produced to the iron plate in swing seat during electromagnet energising, make swing seat overcome torsion spring torsion and to lower swing.
In the cloth position regulator of above-mentioned Sewing machines, described power source comprises power motor, described friction pulley is hinged in swing seat by front rotary shaft, described swing seat is hinged on cloth pushing table by rear rotating shaft, described rear rotating shaft is fixed with driving pulley, described front rotary shaft is fixed with driven pulley, described driving pulley is connected by belt with driven pulley, described power motor is connected on cloth pushing table, and the output shaft of power motor is connected mutually with rear rotating shaft.Swing seat turning set is located in rear rotating shaft, can position, axis of rotation after power motor drives after driving air cylinder driven swing seat puts in place to swing seat, and can not produce swing seat and interfere, rear rotating shaft makes friction wheel from rotation by belt wheel transmission; Certain power source also can only include servomotor, and this servomotor is connected in the free end of swing seat, and servomotor is directly connected mutually with front rotary shaft.
In the cloth position regulator of above-mentioned Sewing machines, in described rear rotating shaft, turning set is provided with turning set, and above-mentioned swing seat is connected on turning set.Namely swing seat is connected in rear rotating shaft by turning set, Stability Analysis of Structures.
In the cloth position regulator of above-mentioned Sewing machines, the downside of described swing seat has cavity, above-mentioned driving pulley, driven pulley and belt are all positioned at cavity.Make structure compacter, and driving pulley, driven pulley and belt are hidden in cavity inside, safer.
In the cloth position regulator of above-mentioned Sewing machines, described power source also comprises tensioning shaft, the two lateral walls of described cavity all offers bar-shaped trough, described in two, one end of bar-shaped trough is downward-sloping, the two ends of described tensioning shaft all have stud, stud described in two is each passed through two bar-shaped troughs, and in the end of stretching out by nut check, the outer peripheral face of described tensioning shaft is resisted against on belt.After unclamping nut, tensioning shaft can move along bar-shaped trough, the outer peripheral face of tensioning shaft is made to be pressed on belt, belt is avoided to occur skidding, the outer peripheral face of tensioning shaft is shiny surface, less with the frictional force of belt, certain bar-shaped trough be arranged so that tensioning shaft can regulate the tensile force of belt, use more flexible and changeable.
In the cloth position regulator of above-mentioned Sewing machines, described cloth pushing table is fixed with the support of U-board shape, the mount pad of column is hinged with in described support, described mount pad free end end face offers installing hole, the cylinder ends of described driving cylinder is plugged in installing hole, and by screw lock, described power motor is connected on the side, side of support.Cylinder is driven to be connected on support by mount pad, more stable, the position driving cylinder can be regulated simultaneously after unclamping screw, namely regulate the initial position of swing seat, and then regulate friction pulley to press down thrust that is rear and cloth, therefore, it is possible to be applicable to the cloth of different-thickness.
In the cloth position regulator of above-mentioned Sewing machines, described backup plate is provided with the connecting plate of at least two L shapes, one end of described connecting plate is vertically arranged, the other end offers the connecting hole of bar shaped, and the bar shaped direction of connecting hole and guide edge perpendicular along its length, described connecting plate wears connecting hole by bolt and is fixed on cloth pushing table, and described sensor is connected in the upper end of connecting plate.Can be regulated the position of sensor by connecting plate, make at least one sensor be positioned at above cloth, at least one sensor is positioned at above backup plate.
In the cloth position regulator of above-mentioned Sewing machines, on the outer peripheral face of described friction pulley, circumference offers cannelure, is arranged with rubber ring in described cannelure.Rubber ring can increase the frictional force between cloth, avoids occurring between frictional force and cloth skidding.
Compared with prior art, the cloth position regulator of this Sewing machines has the following advantages:
1, owing to there is skew when cloth, namely cloth away from guide edge along or cross guide edge along time sensor can detect and send a signal to controller, controller controls actuator and power source action, cloth is moved and gets back on setting path, improves the work quality of Sewing machines.
2, because the outer peripheral face of tensioning shaft is pressed on belt, avoid belt occur skid, the outer peripheral face of tensioning shaft is shiny surface, less with the frictional force of belt, bar-shaped trough be arranged so that tensioning shaft can regulate the tensile force of belt, use more flexible and changeable.
3, due to the outer peripheral face of friction pulley being arranged with rubber ring, the frictional force between cloth can be increased, avoid occurring between frictional force and cloth skidding.
Accompanying drawing explanation
Fig. 1 is the perspective view of this cloth position regulator.
Fig. 2 is the structure top view of this cloth position regulator.
Fig. 3 is the structure side view of this cloth position regulator.
Fig. 4 is the structure sectional view of this cloth position regulator.
Fig. 5 is the partial structurtes sectional view of this cloth position regulator.
In figure, 1, cloth pushing table; 11, support; 12, connecting plate; 121, connecting hole; 2, backup plate; 21, guide edge edge; 3, swing seat; 31, friction pulley; 311, rubber ring; 32, front rotary shaft; 33, rear rotating shaft; 34, turning set; 35, cavity; 36, bar-shaped trough; 4, sensor; 5, actuator; 51, cylinder is driven; 52, mount pad; 521, installing hole; 522, screw; 6, power source; 61, power motor; 62, driving pulley; 63, driven pulley; 64, belt; 65, tensioning shaft; 651, stud; 66, nut.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, a kind of cloth position regulator of Sewing machines, Sewing machines comprises cloth pushing table 1, casing, base, the parts such as controller, cloth pushing table 1 is positioned on base, transfer for cloth, the direction of cloth transfer is the fore-and-aft direction of cloth pushing table 1, cloth pushing table 1 upper side is fixed with backup plate 2, backup plate 2 have along cloth pushing table 1 fore-and-aft direction arrange and for cloth against guide edge along 21, guide edge exceeds cloth pushing table 1 table top along 21, when cloth is transferred, the edge of cloth can be resisted against guide edge along on 21, namely cloth moves setting path into cloth along guide edge along 21.Cloth position regulator comprises the swing seat 3 of friction pulley 31 and strip, on the outer peripheral face of friction pulley 31, circumference offers cannelure, be arranged with rubber ring 311 in cannelure, rubber ring 311 can increase the frictional force between cloth, avoids occurring between frictional force and cloth skidding.Cloth pushing table 1 is provided with and can detects that the sensor 4 of skew occurs in cloth position, one end of swing seat 3 is hinged on cloth pushing table 1, friction pulley 31 is hinged on the other end of swing seat 3, and the centerline direction of friction pulley 31 is identical along the length direction of 21 with guide edge, cloth pushing table 1 is provided with actuator 5 and power source 6, when sensor 4 detects that cloth position occurs to offset, actuator 5 can drive swing seat 3 to lower swing and make friction pulley 31 be pressed on cloth, and power source 6 can drive friction pulley 31 to rotate and cloth is got back on setting path.Controller is connected with sensor 4, power source 6 and actuator 5 respectively.When skew appears in cloth, namely cloth away from guide edge along 21 or cross guide edge along 21 time sensor 4 can detect and send a signal to controller, controller controls actuator 5 and power source 6 action, concrete, when cloth occurs away from the skew of guide edge along 21, sensor 4 sends signal to controller, controller controls actuator 5 action, the free end of swing seat 3 is declined, friction pulley 31 compresses mutually with cloth, controller controls power source 6 action further, friction pulley 31 is rotated forward, frictional force between friction pulley 31 and cloth can make cloth move and be close to guide edge along 21, namely cloth is got back on setting path, actuator 5 makes swing seat 3 lift reset afterwards, in like manner, when there is crossing the skew of guide edge along 21 in cloth, sensor 4 sends signal to controller, controller controls actuator 5 action, the free end of swing seat 3 is declined, friction pulley 31 compresses mutually with cloth, controller controls power source 6 action further, friction pulley 31 is reversed, frictional force between friction pulley 31 and cloth cloth can be made to move and get back to guide edge along 21 against position, namely cloth is got back on setting path, actuator 5 makes swing seat 3 lift reset afterwards, total is simple, and the work quality of Sewing machines can be ensured.
Specifically, shown in composition graphs 2, the quantity of sensor 4 can be multiple, and along guide edge along 21 arrangements, can the cloth offset situation of Real-Time Monitoring diverse location, and in order to compact conformation, in the present embodiment, the quantity of sensor 4 is two, sensor 4 is reflection sensor 4, and two sensors 4 are positioned at the top of cloth pushing table 1 table top, one of them sensor 4 is positioned at guide edge along 21 towards the side of cloth, namely when cloth is normally transferred, this sensor 4 is positioned at the top of cloth, can detect that cloth is positioned at below it, when this sensor 4 can't detect cloth, judge that cloth occurs away from the skew of guide edge along 21, another sensor 4 is positioned at guide edge along 21 opposite sides, is namely positioned at above backup plate 2, and when cloth is normally transferred, this sensor 4 is the existence that can't detect cloth, but when detection expire below there is cloth time, judge that the skew of guide edge along 21 appears crossing in cloth.Backup plate 2 is provided with the connecting plate 12 of two L shapes, one end of connecting plate 12 is vertically arranged, the other end offers the connecting hole 121 of bar shaped, and the bar shaped direction of connecting hole 121 and guide edge perpendicular along 21 length directions, connecting plate 12 wears connecting hole 121 by bolt and is fixed on cloth pushing table 1, two sensors 4 are connected in the upper end of two connecting plates 12 respectively, the position of sensor 4 can be regulated by connecting plate 12, make at least one sensor 4 be positioned at above cloth, at least one sensor 4 is positioned at above backup plate 2.
Shown in composition graphs 3, actuator 5 comprises driving cylinder 51, cloth pushing table 1 is fixed with the support 11 of U-board shape, the mount pad 52 of column is hinged with in support 11, mount pad 52 free end end face offers installing hole 521, the cylinder ends of cylinder 51 is driven to be plugged in installing hole 521, and locked by screw 522, cylinder 51 is driven to be positioned at the below of swing seat 3, the piston rod end fixed cover of cylinder 51 is driven to be provided with connector, this connector is fixed with bearing pin, and by hinge in swing seat 3, drive the piston rod of cylinder 51 can drive swing seat 3 reciprocally swinging, in the swing process of swing seat 3, cylinder 51 is driven also can relatively to swing by cloth pushing table 1, avoid stuck.Cylinder 51 is driven to be connected on support 11 by mount pad 52, more stable, the position driving cylinder 51 can be regulated simultaneously after unclamping screw 522, namely regulate the initial position of swing seat 3, and then regulate friction pulley 31 to press down thrust that is rear and cloth, therefore, it is possible to be applicable to the cloth of different-thickness.Certain actuator 5 can adopt the mode of electromagnet, be arranged on cloth pushing table 1 by electromagnet, fixed iron piece in swing seat 3, and swing seat 3 is arranged torsion spring, lifting status is there is at torsion spring effect lower swing seat 3, and absorption affinity can be produced to the iron plate in swing seat 3 during electromagnet energising, make swing seat 3 overcome torsion spring torsion and to lower swing.
Composition graphs 4, shown in Fig. 5, power source 6 comprises power motor 61, power motor 61 is connected on the side, side of support 11, friction pulley 31 is hinged in swing seat 3 by front rotary shaft 32, swing seat 3 is hinged on cloth pushing table 1 by rear rotating shaft 33, namely after, in rotating shaft 33, turning set is provided with turning set 34, swing seat 3 is connected on turning set 34, rear rotating shaft 33 is fixed with driving pulley 62, front rotary shaft 32 is fixed with driven pulley 63, driving pulley 62 is connected by belt 64 with driven pulley 63, the output shaft of power motor 61 is connected mutually with rear rotating shaft 33, can position swing seat 3 after driving cylinder 51 drives swing seat 3 to put in place, power motor 61 drives rear rotating shaft 33 to rotate, can not produce swing seat 3 and interfere, rear rotating shaft 33 makes friction pulley 31 rotate by belt wheel transmission, certain power source 6 also can only include servomotor, and this servomotor is connected in the free end of swing seat 3, and servomotor is directly connected mutually with front rotary shaft 32.The downside of swing seat 3 has cavity 35, driving pulley 62, driven pulley 63 and belt 64 are all positioned at cavity 35, make structure compacter, and driving pulley 62, driven pulley 63 and belt 64 are hidden in cavity 35 inside, safer.Power source 6 also comprises tensioning shaft 65, the two lateral walls of cavity 35 all offers bar-shaped trough 36, one end of two bar-shaped troughs 36 is downward-sloping, the two ends of tensioning shaft 65 all have stud 651, two studs 651 are each passed through two bar-shaped troughs 36, and locked by nut 66 in the end of stretching out, the outer peripheral face of tensioning shaft 65 is resisted against on belt 64, after unclamping nut 66, tensioning shaft 65 can move along bar-shaped trough 36, the outer peripheral face of tensioning shaft 65 is made to be pressed on belt 64, belt 64 is avoided to occur skidding, the outer peripheral face of tensioning shaft 65 is shiny surface, less with the frictional force of belt 64, certain bar-shaped trough 36 be arranged so that the tensile force of tensioning shaft 65 pairs of belts 64 can regulate, use more flexible and changeable.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as cloth pushing table 1, support 11, connecting plate 12 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.