Feeder of sewing machine
Technical field
the present invention relates to a kind of feeder of sewing machine.
Background technology
existing feeder of sewing machine, it comprises the upper feeding group with roller press and the lower feeding group with drawing-inroller, and roller press and drawing-inroller, match one on the other, and by cloth clamp in the middle of the two, carry out feeding by the rotation of roller press and drawing-inroller.
lower feeding group of the prior art, comprise support group, lower stepper motor, the lower drive shaft that is connected with lower stepper motor by the first transmission component, lower drive shaft is connected with drawing-inroller by the second transmission component, support group comprises the column and drawing-inroller pack support that are connected, the same length of column and drawing-inroller pack support, lower stepper motor connects on drawing-inroller pack support.It has following shortcoming: 1, the output shaft of lower stepper motor is arranged along the longitudinal direction, its link position is interferenceed with other transmission components of Sewing machines, and stepper motor breaks down instantly, the transmission component with its interference all need be removed, just lower motor can be dismantled, very inconvenient; 2, the second transmission component is bevel gear set, drawing-inroller is directly connected with the upper end of lower drive shaft by bevel gear set, lower drive shaft is longer, the column of support group is connected with drawing-inroller pack support formation one spatial accommodation, lower drive shaft is arranged in this spatial accommodation, the size of drawing-inroller pack support is comparatively large and involve great expense, and makes the manufacturing cost of Sewing machines very high.
upper feeding group of the prior art is arranged on sewing-machine foot pole interlinking block, and upper feeding group comprises stepper motor, the transmission mechanism be connected with the output shaft of upper stepper motor, the roller press assembly that is directly connected with described transmission mechanism.Roller press is driven to rotate by upper stepper motor by the bevel gear set mechanism in transmission mechanism and roller press assembly.In normal production, the product processed due to Sewing machines is different, need the roller press using different size model, therefore need often to change roller press assembly, and the syndeton of presser foot component of the prior art, make roller press assembly when changing, need by comprise upper stepper motor and transmission mechanism whole on feeding assembling and dismantling except just changing, and again must be corrected by professional, very inconvenient, affect production efficiency and maintenance man-hours.
Summary of the invention
in order to solve the problem, the object of the present invention is to provide a kind of feeder of sewing machine.
in order to reach above object, the technical solution used in the present invention is: a kind of feeder of sewing machine, it comprises the upper feeding group with roller press and the lower feeding group with the drawing-inroller matched with roller press, lower feeding group comprises support group, lower stepper motor, by the lower drive shaft that the first transmission component is connected with lower stepper motor, lower drive shaft is connected with drawing-inroller by the second transmission component, support group comprises column and is less than column with length and the drawing-inroller pack support being connected column upper end, lower drive shaft is arranged in column, lower stepper motor to be fixedly connected on column and to be positioned at the outside of column.More preferably, lower stepper motor is positioned at the left side of column, and the output shaft of lower stepper motor is arranged in left-right direction.Feeder of sewing machine of the present invention, the basis of existing feeder of sewing machine is carried out the improvement of structure, the link position of lower stepper motor can not be interferenceed with other transmission components of Sewing machines, instantly stepper motor breaks down, lower stepper motor of directly dismantling places under repair or changes, very convenient.
in the more preferred embodiment of one, second transmission component comprises connecting axle that bottom is connected with lower drive shaft same axis, an end is connected the Bevel Gear Transmission group that the other end is connected with drawing-inroller with the upper end of connecting axle, connecting axle is arranged in column, and the upper-end part of driving of connecting axle is in drawing-inroller pack support.By adopting the program, shortening the length of lower drive shaft, the size of drawing-inroller pack support being reduced many, greatly reducing the cost of Sewing machines.
in the more preferred embodiment of one, Bevel Gear Transmission group comprise the upper end being connected to connecting axle the first bevel gear, be meshed and the second bevel gear be coaxially connected with drawing-inroller with the first bevel gear.By adopting the program, both ensure that output speed, changing transmission direction again, being convenient to the installation of lower feeding group.
in the more preferred embodiment of one, the first transmission component comprise be connected with the output shaft of lower stepper motor lower driving gear, be meshed and the lower driven gear be connected with lower drive shaft same axis with lower driving gear.More preferably, lower driving gear and lower driven gear are bevel gear, both change output speed, and change transmission direction again, and be convenient to the installation of lower motor.
in the more preferred embodiment of one, upper feeding group comprises stepper motor, the transmission mechanism be connected with the output shaft of upper stepper motor, the power transmission shaft group be connected by universal joint with transmission mechanism, the roller press assembly that is connected separatably with power transmission shaft group, and the output shaft of upper stepper motor is connected by universal joint with power transmission shaft group.By adopting the program, make feeding group have at least two duties, when it is in the first duty, the other end of power transmission shaft group is near the drawing-inroller of lower feeding group, when upper feeding group is in the second duty, the other end of power transmission shaft group is away from drawing-inroller.Feeder of sewing machine is in the first duty when normal production, when roller press assembly changed by needs, pull power transmission shaft group, transmission group is rotated by universal joint, make roller press assembly away from drawing-inroller, roller press assembly can be pulled down change, without the need to more whole upper feeding assembling and dismantling being removed.
in the more preferred embodiment of one, the output shaft of upper stepper motor is arranged in the horizontal direction, and the axial line of power transmission shaft group is vertically arranged.This programme adopts the mode of bevel gear set to realize by above-mentioned transmission mechanism, and both can change output speed, and can change transmission direction again, in reduction, feeding group in the vertical direction taken up space, and is convenient to the installation of feeding group on Sewing machines.This programme also can adopt bevel gear set mechanism to realize by transmission mechanism.
in the more preferred embodiment of one, roller press assembly and the phase clamping separatably of power transmission shaft group.By adopting this programme, make the dismounting of roller press assembly and easier for installation.
in the more preferred embodiment of one, power transmission shaft group comprises the second driving shaft be connected separatably with roller press assembly along its other end that is axially slidably connected mutually with the first power transmission shaft with the first power transmission shaft be connected with transmission mechanism by universal joint, one end.By adopting this programme, power transmission shaft group is scalable in the axial direction, and the height of power transmission shaft group can be regulated, to adapt to the production and processing of different product or identical product different parts.
in the more preferred embodiment of one, the other end of second driving shaft has the bayonet socket with the phase clamping separatably of roller press assembly.By adopting this programme, make the dismounting of roller press assembly and easier for installation.
in the application direction conventionally in the normal use habit definition of Sewing machines foundation structure, operating personnel are when using Sewing machines, and it is the described all around direction up and down in the application up and down all around.
owing to adopting technique scheme, compared with prior art, lower stepper motor easy accessibility, the contraction in length of lower drive shaft, the size of drawing-inroller pack support reduces feeder of sewing machine of the present invention, greatly reduces the cost of Sewing machines.
Accompanying drawing explanation
what accompanying drawing 1 was feeder of sewing machine of the present invention faces structural representation;
accompanying drawing 2 is the side-looking structural representation of feeder of sewing machine of the present invention;
accompanying drawing 3 is the sectional structure schematic diagram of lower feeding group in feeder of sewing machine of the present invention;
accompanying drawing 4 is the sectional structure schematic diagram of upper feeding group in feeder of sewing machine of the present invention.
number in the figure is:
1, upper stepper motor; 2, transmission mechanism; 21, gear-box; 22, upper driven gear; 3, roller press assembly; 31, pressure wheel; 4, universal joint; 5, power transmission shaft group; 51, the first power transmission shaft; 52, second driving shaft; 53, bayonet socket; 6, support group; 61, column; 62, drawing-inroller pack support; 7, the second transmission component; 8, lower stepper motor; 9, the first transmission component; 91, lower driving gear; 92, lower driven gear; 10, lower drive shaft; 11, drawing-inroller.
Detailed description of the invention
below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
as can be seen from the structural representation of accompanying drawing 1 to accompanying drawing 4, present embodiments provide a kind of feeder of sewing machine, it comprises the upper feeding group with pressure wheel 31 and the lower feeding group with drawing-inroller 11.Drawing-inroller 11 is positioned at the below of pressure wheel 31, and the clamping cloth that matches with pressure wheel 31, the two has rotated feeding.
lower feeding group comprises support group 6, lower stepper motor 8, the lower drive shaft 10 that is connected with lower stepper motor 8 by the first transmission component 9, lower drive shaft 10 is connected with drawing-inroller by the second transmission component 7, support group 6 comprises column 61 and is less than column 61 with length and the drawing-inroller pack support 62 being connected column 61 upper end, column 61 has one first spatial accommodation, lower drive shaft 10 is arranged in this first spatial accommodation, and lower stepper motor 8 to be fixedly connected on column 61 and to be positioned at the outside of column 61.With reference to accompanying drawing 3.More preferably, the first spatial accommodation is positioned at the right side of column 61, and lower stepper motor 8 is positioned at the left side of column 61, and the output shaft of lower stepper motor 8 is arranged in left-right direction.The link position of lower stepper motor 8 can not be interferenceed with other transmission components of Sewing machines, and stepper motor 8 breaks down instantly, and lower motor 8 of directly dismantling places under repair or changes, very convenient.
in the more preferred embodiment of one, second transmission component 7 comprises bevel gear shaft 71, end that bottom is connected with lower drive shaft 10 same axis and to be connected with the upper end of bevel gear shaft 71 the gear drive group that the other end is connected with drawing-inroller 11, bevel gear shaft 71 is arranged in the first spatial accommodation of column 61, drawing-inroller pack support 62 has one second spatial accommodation, and the upper-end part of driving of bevel gear shaft 71 is in this second spatial accommodation.By adopting the program, shortening the length of lower drive shaft 10, the size of drawing-inroller pack support 62 being reduced many, greatly reducing the cost of Sewing machines.Gear drive group in the present embodiment adopts bevel gear set, comprise the first bevel gear 72 of the upper end being connected to bevel gear shaft 71, be meshed with the first bevel gear 72 and second bevel gear 73 that be connected coaxial with drawing-inroller 11, like this, both output speed was changed, change transmission direction again, be convenient to the installation of lower feeding group.
in the more preferred embodiment of one, the first transmission component 9 comprise be connected with the output shaft of lower stepper motor 8 lower driving gear 91, be meshed and the lower driven gear 92 be connected with lower drive shaft 10 same axis with lower driving gear 91.In the present embodiment, lower driven gear 92 is fixedly connected on the bottom of lower drive shaft 10.More preferably, lower driving gear 91 and lower driven gear 92 are bevel gear, both change output speed, and change transmission direction again, are convenient to the installation of lower stepper motor 8.When other design conditions allow, bevel gear set also can adopt worm and gear group to replace.
upper feeding group is arranged on sewing machine head (attached not shown), the power transmission shaft group 5 that upper feeding group comprises stepper motor 1, transmission mechanism 2, end that is connected with the output shaft of upper stepper motor 1 is connected by universal joint 4 with transmission mechanism 2, the roller press assembly 3 be connected separatably with the other end of power transmission shaft group 5, the output shaft of upper stepper motor 1 is connected by universal joint 4 with power transmission shaft group 5.Upper feeding group has at least two duties, when it is in the first duty, the other end of power transmission shaft group 5 is near drawing-inroller 11 and sewing machine head, and when upper feeding group is in the second duty, the other end of power transmission shaft group 5 is away from drawing-inroller 11 and sewing machine head.Sewing machines is when normally producing, upper feeding group is in the first duty, upper stepper motor 1 drives power transmission shaft group 5 normally around the axial rotation of power transmission shaft group 5 by transmission mechanism 2, when roller press assembly 3 changed by needs, pull drawing-inroller 31, roller press assembly 3 and power transmission shaft group 5 are rotated by universal knot 4, make roller press assembly 3 away from drawing-inroller 11, can pull down roller press assembly 3 and change.
in the more preferred embodiment of one, the output shaft of upper stepper motor 1 is arranged in the horizontal direction, and the axial line of power transmission shaft group 5 vertically becomes 7 degree of angles to arrange.Upper feeding group can be reduced like this taken up space, be convenient to the installation of feeding group on Sewing machines.This preferred embodiment is realized by transmission mechanism 2, in the present embodiment as shown in Figure 4, transmission mechanism 2 comprises the upper driving gear (attached not shown) be coaxially connected with the output shaft of upper stepper motor 1, the upper driven gear 22 be meshed with upper driving gear, the rotating shaft of upper driven gear 22 is connected by universal joint 4 with power transmission shaft group 5, rotating shaft and power transmission shaft group 5 axial line of upper driven gear 22 coincide, and upper driving gear and upper driven gear 22 are bevel gear.Upper driving gear and upper driven gear 22 are arranged in gear-box 21.As shown in Figure 2, upper stepper motor 1 is fixedly connected on gear-box 21.This programme both can change output speed, can change transmission direction again.
as shown in Figure 4, power transmission shaft group 5 comprises the second driving shaft 52 be connected separatably with roller press assembly 3 along its other end that is axially slidably connected mutually with the first power transmission shaft 51 with the first power transmission shaft 51 be connected with transmission mechanism 2 by universal joint 4, one end.Like this, power transmission shaft group 5 is scalable in the axial direction, and the height of power transmission shaft group 5 can be regulated, to adapt to the production and processing of different product or identical product different parts.The first power transmission shaft 51 in the present embodiment and second driving shaft 52 adopt spline joint.
roller press assembly 3 and power transmission shaft group 5 phase clamping separatably, make the dismounting of roller press assembly 3 and easier for installation.In the present embodiment, at the other end of second driving shaft 52, there is the bayonet socket 53 with roller press assembly 3 phase clamping separatably.
roller press assembly 3 comprises the bevel gear shaft (attached not shown) be connected separatably with power transmission shaft group 5, the pressure wheel 31(be meshed with bevel gear on bevel gear shaft is attached not shown).One end of bevel gear shaft has the Access Division with above-mentioned bayonet socket 53 phase clamping separatably.
upper feeding group in the present embodiment, when changing roller press assembly, do not need to dismantle together with stepper motor and transmission mechanism, only need pull power transmission shaft group 5, remove roller press assembly, and roller press assembly and power transmission shaft group 5 adopt the connected mode of clamping, make dismounting convenient.
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.