CN2578364Y

CN2578364Y - Rotary arm of leather sewing machine

Info

Publication number: CN2578364Y
Application number: CN 02252386
Authority: CN
Inventors: 尤鹏举
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-18
Filing date: 2002-10-18
Publication date: 2003-10-08
Anticipated expiration: 2012-10-18

Abstract

The utility model relates to a rotary arm device of a leather sewing machine, which comprises a body and a power source, wherein, an arm seat on which a rotary arm is arranged above a driving shaft; the driving shaft is connected with a thread hooking device via an arm power transmission device; the rotary arm which is arranged on the top of the body above a needle comprises a main arm and an auxiliary arm which are integrated, and a seat of the thread hooking device opposite to the needle is arranged on the bottom of the auxiliary arm; the arm power transmission device is arranged in the rotary arm, the top of the main arm is provided with a steering power source which is connected with the rotary arm, and the steering power source is also connected with the thread hooking device via a synchronizing mechanism. The utility model has the advantages that the rotary arm can be rotated according to different actual states of sewing; leather goods can be sewed in a narrow space and the position of the thread hooking device can be kept synchronously; the sewing operation is more convenient and fast, and the quality of products is stable.

Description

The rotatable cantilever arrangement of leather goods sewing machine

[technical field]

The utility model relates to the rotatable cantilever arrangement of a kind of leather goods sewing machine.

[background technology]

The sewing machine structure of present sewing leather goods, as Taiwan the 88201645 A01 number " suitcase sewing machine structure appends one " patent, its structure is to comprise: a board side cooperates a U type rocker body; the rocker body end is provided with in addition colludes the line device; wherein; U type rocker body is the structural form that upwards is provided with by the bottom; so it colludes the structure that line device below still has its U type rocker body; though but so sewing toe-cap ora terminalis or heel and upper of a shoe joint; then can't be for it to the sewing on the vamp; therefore have the people to propose improvement; its rocker structure is set as one skewed, but its bottom still has bigger rocker structure, and is narrow and small for the space; rocking arm stretches into and is difficult for the part sewing and still has any problem, so need further improvement to adapt to different needs.

[utility model content]

In view of this, for overcoming the very narrow shortcoming in sewing space, below of leather goods sewing machine, the purpose of this utility model is to provide a kind of leather goods sewing machine rotatable cantilever arrangement, be on main body is provided with the end of car pin, to establish the single-revolution cantilever, so that the visual different sewing virtual condition of revolution cantilever is rotated, turning point sewing leather goods that can be in crawl space, the location that more can keep colluding the line device synchronously can make the sewing operation more convenient fast and product with stable quality.

The utility model comprises in providing a kind of leather goods sewing machine rotatable cantilever arrangement:

One main body, its bottom shelf is located on the support, it is first foot-operated and second foot-operated that extend support bottom, and on support, be provided with the power source that is connected with the driving shaft of this main body in addition, this driving shaft end in addition connects the car pin through car pin transmission mechanism, the place, top of this driving shaft is provided with the cantilever seat in addition, and the revolution cantilever is set on the cantilever seat; This driving shaft is connected to be located to collude through the cantilever power transmission and colludes the line device on the line device seat; It is characterized in that:

This revolution cantilever is this main body top that is arranged at car pin top, this revolution cantilever comprises the principal arm that articulates with main body and extends to the auxiliary of car pin below, this principal arm and auxiliary are combined into one, and with respect to car pin place this is set in the auxiliary bottom and colludes line device seat, this cantilever power transmission is located at revolution cantilever inside, and be provided with steering power source in addition in the principal arm top of revolution cantilever, and this steering power source is connected with the revolution cantilever, and connect this by a synchronous mechanism colludes the line device to this steering power source in addition.

The rotatable cantilever arrangement of described leather goods sewing machine, it is characterized in that: this driving shaft is placed in the top of main body, driving shaft stretches out the power source that the outer end of main body is provided with belt pulley and support and interconnects, cooperate driving belt to connect the revolution cantilever and be provided with the cantilever drive in driving shaft, this cantilever drive is a toothed belt wheel.

The rotatable cantilever arrangement of described leather goods sewing machine, it is characterized in that: this cantilever seat is the foundry goods of hollow, in the cantilever seat, be provided with the seat axle, on the seat axle drive being set is connected with above-mentioned driving belt, the end in addition of seat axle then cooperates the resistance to compression bearing group to fixedly install first deflecting roller, this first deflecting roller and the engagement of second deflecting roller, this is first years old, two deflecting rollers are to be bevel type gear, this second deflecting roller is fixedly arranged on second axle, this second axle fitted bearing is positioned in the axle sleeve, this axle sleeve is to be fixed on the cantilever seat, and second deflecting roller of second axle and shaft room also are provided with the resistance to compression bearing group, and this second axle in addition end pass axle sleeve and be installed with the 3rd deflecting roller, the 3rd deflecting roller is connected with this cantilever power transmission, this axle sleeve then in addition the fitted bearing group be positioned in the cantilever seat with large-scale resistance to compression bearing group, and this axle sleeve top cooperates gim peg and the principal arm that turns round cantilever to link into an integrated entity.

The rotatable cantilever arrangement of described leather goods sewing machine is characterized in that: the resistance to compression bearing group of aforementioned each setting of cooperation, comprise roller bearing, and the roller bearing of this roller bearing is to become radially to be provided with, ora terminalis is provided with the resistance to compression pad before and after roller bearing.

The rotatable cantilever arrangement of described leather goods sewing machine, it is characterized in that: this cantilever power transmission is to be equipped with first arm axle in the principal arm of revolution cantilever, first arm axle is provided with first deflecting roller, the first arm shaft extension is provided with second deflecting roller to the principal arm turning point, first, two deflecting rollers are bevel type gear, second deflecting roller and the 3rd deflecting roller that is vertically installed on the second interior arm axle of principal arm mesh, this second arm axle end in addition stretches in the auxiliary and is provided with the 4th deflecting roller, the 5th deflecting roller that the 4th deflecting roller and level are located on the 3rd arm axle of auxiliary bottom is meshing with each other, the end in addition of the 3rd arm axle then is provided with the 6th deflecting roller, the 6th deflecting roller then meshes is located at the 7th deflecting roller that colludes on the line device seat, be provided with the running down fluted disc and make active toothed disk and collude line device seat, and the 7th deflecting roller and the engagement of running down fluted disc, the running down fluted disc is held in addition and is done the active toothed disk engagement, do the active toothed disk center and be non-circular hole and collude the blocking of line bottom part body non-cylindrical configuration, but collude the bobbin that is provided with rotation in the line main body, colluding line main body top is covered with in addition and colludes the line lid, be rotatably positioned in synchronous swivel base and collude other fitted bearing group of line main body, this bearing group has positioning piece, and collude the line bottom part body relatively in keeper and be provided with ball and pad, the swivel base top is covered with flap in addition synchronously, and with this flap of bolting, and be provided with in the outside of synchronous swivel base most oblique wear the groove shape cooperate with described lazy-tongs nibble the transfer part synchronously.

The rotatable cantilever arrangement of described leather goods sewing machine is characterized in that: this revolution cantilever principal arm top is provided with steering power source in addition, and the principal arm top of revolution cantilever is provided with in addition:

One steering base be with the steering power source relative fixed on principal arm;

One unmoving axle is that cooperation two groups of resistance to compression bearing group clamping one bearing and the locking part lock with internal thread are established, this unmoving axle is fixed positioned in the steering base, the unmoving axle top is equipped with lock pawl with this unmoving axle clamping location, this lock pawl be with bolting on retainer, this retainer cooperates array bolting in cantilever seat side.

The rotatable cantilever arrangement of described leather goods sewing machine, it is characterized in that: steering power source is passed in the middle section of this unmoving axle, and this steering power source comprises:

One connects the synchronous rotating shaft of this steering power source;

One drive worm screw be fixedly arranged on this synchronous rotating shaft and with steering gear worm engagement, this steering gear worm is to be placed in the connecting support, this connecting support is and steering base is fitted and solid with the bolt spiral shell; Steering gear worm then is installed on this unmoving axle, on this unmoving axle and between the steering gear worm and be provided with locking key.

The rotatable cantilever arrangement of described leather goods sewing machine is characterized in that: the synchronous rotating shaft free end of steering power source then is directly to connect lazy-tongs, and these lazy-tongs comprise:

One first synchronizing shaft, the one end engages with coupling spool, and the coupling spool two ends cooperate screw lock fixedly to stretch into this synchronous rotating shaft and this first synchronizing shaft end at these coupling spool both ends with the fixedly fitting of bolt form respectively; And the in addition end of first synchronizing shaft passes and is fixed in the pedestal synchronously of first on the principal arm, and engage sleeves is provided with bearing and two groups of resistance to compression bearing group, first synchronizing shaft is positioned on the first synchronous pedestal, and the first synchronizing shaft end of passing the first synchronous pedestal is provided with first deflecting roller, this first deflecting roller and second deflecting roller engagement that is installed on the second synchronizing shaft end, and the end in addition of second synchronizing shaft is provided with the 3rd deflecting roller in addition, the 4th deflecting roller engagement that sets firmly on the 3rd synchronizing shaft of the 3rd deflecting roller and setting in the horizontal direction, the 3rd synchronizing shaft passes the second synchronous pedestal and the 3rd synchronous pedestal that is fixed in the auxiliary bottom and is provided with the 5th deflecting roller, the 6th deflecting roller engagement that sets firmly on the 5th deflecting roller and the 4th synchronizing shaft that laterally is placed through the auxiliary bottom, and the 4th synchronizing shaft middle section is provided with the worm screw synchronous piece in addition with respect to colluding the line device, and this worm screw synchronous piece is meshed with the described transfer part of nibbling synchronously of colluding the synchronous swivel base of line device.

By aforesaid structure, make the utility model can reach following function, comprising:

1, the structure that the utility model is brand-new can adapt to different needs: the visual different sewing virtual condition of revolution cantilever of the present utility model is rotated, turning point sewing leather goods that can be in crawl space, more can keep colluding the location of line device synchronously, can make the more convenient quick and product with stable quality of sewing operation, one brand-new sewing type not only is provided, more can cooperates sewing to go out structure different from the past.

2, structural stability height: be provided with resistance to compression bearing group 80 in the overall structure and make structure can resist axial pressure, and reach the demand of high stability.

For further understanding architectural feature of the present utility model and purpose thereof, now with as after preferred embodiment attached with graphic detailed description as after, illustrated in conjunction with the accompanying drawings embodiment only is the usefulness for explanation.

[description of drawings]

Fig. 1: be integral planar schematic diagram of the present utility model.

Fig. 2: be main body part plan schematic diagram of the present utility model.

Fig. 3: be that integral body of the present utility model is in conjunction with schematic top plan view.

Fig. 4: be body interior system decomposition schematic diagram of the present utility model.

Fig. 5: be body interior system decomposition schematic diagram 2 of the present utility model.

Fig. 6: be main body driving shaft stero exploded view of the present utility model.

Fig. 7: be cantilever base system decomposing schematic representation of the present utility model.

Fig. 8: be the revolution cantilever of the present utility model steering power source system decomposition schematic diagram inner with it.

Fig. 9: be lazy-tongs upper semisection system decomposition schematic diagram of the present utility model.

Figure 10: be lazy-tongs upper semisection combination schematic diagram of the present utility model.

Figure 11: be lazy-tongs lower semisection system decomposition schematic diagram of the present utility model.

Figure 12 A, 12B, 12C: be the be rotatably assorted schematic diagram of foot-operated action of revolution cantilever of the present utility model.

Figure 13: be car pin geartrain systems decomposing schematic representation of the present utility model.

Figure 14: be work feed tooth system decomposing schematic representation of the present utility model.

Figure 15: be compress pin system decomposition schematic diagram of the present utility model.

[specific embodiment]

Please cooperate and consult shown in Figure 1ly, the rotatable cantilever arrangement of the utility model leather goods sewing machine comprises:

One main body 10, the bottom shelf of main body 10 is located on the support 20, support 20 bottoms are extended first foot-operated 21 and second and are ridden 22 and trample the usefulness of control for the user, and on support 20, be provided with the power source 23 of motor form in addition, by the belt pulley 11 on the belt drive main body 10, and belt pulley 11 centers are the driving shaft 12 of main body 10, driving shaft 12 end in addition carries out transmission through the transmission mechanism of car pin to car pin 13, and is provided with a cantilever seat 14 in addition for revolution cantilever 30 is set in the place, top that main body 10 is provided with driving shaft 12.

Single-revolution cantilever 30 is main body 10 tops that are arranged at car pin 13 tops, revolution cantilever 30 is to be combined into one by main body 10 principal arm 31 that articulates and the auxiliary 32 that extends to car pin 13 belows with one, and be provided with one in auxiliary 32 bottoms with respect to car pin 13 places and collude line device seat 33, then by cantilever power transmission 40 power on main body 10 driving shafts 12 being reached auxiliary 32 in revolution cantilever 30 inside is located to collude and colludes line device 50 on the line device seat 33, and be provided with a steering power source 60 in addition in principal arm 31 tops of revolution cantilever 30, but this steering power source 60 is except that driving rotational cantilever 30, in addition but start lazy-tongs 70 are so that colluding line device 50 and can keep fit structure form with car pin 13 the bests on the revolution cantilever 30, and reach the purpose of whole high practicability.

Wherein, the structure of main body 10 is shown in Fig. 2,3,4,5, on its structure is to belong to known techniques, does not give unnecessary details at this, only each part design of part is drawn.

And driving shaft 12 is placed in the top of main body 10, please cooperate shown in Figure 6ly, and wherein, driving shaft 12 stretches out the power source 23 that the outer ends of main body 10 are provided with a belt pulley 11 and support 20 and drives mutually; And driving shaft 12 in addition end cooperate car pin transmission mechanism (this partly also belongs to known techniques) making motor-car pin 13, and the cantilever drive 120 that is provided with a toothed belt wheel form on driving shaft 12 in addition cooperates driving belts 121 to enter in the cantilever seat 14 in the revolution cantilever 30 so that power is imported into again.

And cantilever seat 14 is the foundry goods for a hollow, please cooperate consult shown in Figure 7, and in cantilever seat 14, be provided with an axle 140, one drive 141 and driving belt 121 interlocks is set on the seat axle 140, the end in addition of seat axle 140 then cooperates resistance to compression bearing group 80 to fix one first deflecting roller 142, first deflecting roller 142 then drives with 143 engagements of second deflecting roller, this is first years old, two deflecting rollers 142, the 143rd, for bevel type gear so that the power on the seat axle 140 goes to second axle 144 at second deflecting roller, 143 centers, second axle 144 fitted bearing is positioned in the axle sleeve 145, axle sleeve 145 is to be fixed on the cantilever seat 14, and second deflecting roller 143 of

second axle

144 and 145 on axle sleeve also are provided with one group of resistance to compression bearing group 80, be provided with one the 3rd deflecting roller 146 and pass axle sleeve 145 in second axle, 144 other ends, electronic-controlled power steering is turned round in the cantilever 30 and cantilever power transmission 40 interlocks, axle sleeve 145 then in addition the fitted bearing group be positioned in the cantilever seat 14 with large-scale resistance to compression bearing group 80, and axle sleeve 145 tops cooperate the rotation that links into an integrated entity of gim peg and the principal arm 31 that turns round cantilever 30.

This cantilever power transmission 40 is to be equipped with one first arm axle 41 in the principal arm 31 of revolution cantilever 30, please cooperate consult shown in Figure 8, first arm axle 41 is provided with first deflecting roller 410 with respect to the 3rd deflecting roller 146, first arm axle 41 stretches to principal arm 31 turning points and is provided with second deflecting roller 411 of another bevel type gear form power is transferred to the 3rd deflecting roller 420 on second arm axle 42 that is vertically installed in the principal arm 31, second arm axle 42 end in addition stretches in the auxiliary 32 and is provided with one the 4th deflecting roller 421 power is imported into the 3rd arm axle 43 of being located at auxiliary 32 bottoms to level, and the 3rd arm axle 43 is provided with the 5th deflecting roller 430 to be meshing with each other with respect to the 4th deflecting roller 421, the end in addition of the 3rd arm axle 43 then is provided with the 6th deflecting roller 431,431 of the 6th deflecting rollers drive in the 7th deflecting roller 44 that colludes line device seat 33, and collude line device seat 33 is a flat structure, and is provided with circular groove that three-phase cuts in the surface and makes it can be in colluding mutual driven rotary on the line device seat 33 for the 7th deflecting roller 44 and running down fluted disc 45 with inserting as active toothed disk and locate in each center; And the 7th deflecting roller 44 and 45 engagements of running down fluted disc, running down fluted disc 45 in addition end then with do active toothed disk 46 engagements, do active toothed disk 46 centers and be non-circular hole and collude the 51 bottom non-cylindrical configuration blockings of line main body and become drive to collude the form that line device 50 colludes line main body 51, but collude the bobbin 52 that is provided with rotation in the line main body 51, colluding line main body 51 tops is covered with in addition and colludes line lid 53, collude the usefulness of line for control, cooperate in addition and pass a bearing group 54 and be positioned in the synchronous swivel base 55 and collude line main body 51, its bearing group 54 mainly has the keeper 540 of stratum's column, and collude line main body 51 bottoms relatively in keeper 540 and be provided with ball 541 and pad 542, can in synchronous swivel base 55, rotate and collude line main body 51, swivel base 55 tops are covered with a flap 56 in addition synchronously, and with the bolting unitary rotation, and be provided with oblique majority in the outside of synchronous swivel base 55 and wear nibbling synchronously when transfer part 550 is matched with revolution cantilever 30 interlocks with lazy-tongs 70 of flute profile attitude and drive synchronously.

And being provided with a steering power source 60 in addition in revolution cantilever 30 principal arms 31 tops, steering power source 60 is can drive 30 rotations of revolution cantilever simultaneously and collude line device 50 via lazy-tongs 70 Synchronization Control; Please cooperate shown in Fig. 1,9,10,11, wherein, principal arm 31 tops of revolution cantilever 30 are provided with the structure that cooperates steering power source 60 in addition, comprising:

One steering base 310 is into a disk-like structure and can the structure relative with steering power source 60 be fixed in simultaneously on the principal arm 31;

One unmoving axle 34 is a column structure, the one protruding plate-like and the end of thread formed on the bottom, establish with locking part 340 locks that cooperate two groups of resistance to compression bearing group, 80 clampings, one bearing 340 and to have internal thread hole, make unmoving axle 34 be positioned to rotate in the steering base 310 and not thereupon; Unmoving axle 34 tops are configured to flat structural form, to cooperate a lock pawl 35 clampings location, this lock pawl 35 is plates, the one end be with a bolting on a retainer 36, retainer 36 cooperates the array bolting in cantilever seat 14 sides, make retainer 36 and lock pawl 35 keep motionless, and retainer 36 pass and become motionless form fully with fixed by nut in addition simultaneously with the stop-motion body 37 of a bolt form with respect to the end of unmoving axle 34.

And steering power source 60 is passed in the middle section of unmoving axle 34, and wherein, steering power source 60 comprises:

One power source 61, it can be motor or cylinder pressure;

One synchronous rotating shaft 62 is controlled rotation by power source 61;

One drives worm screw 63 is and synchronous rotating shaft 62 unitary rotation, and meshes with a steering gear worm 64, and steering gear worm 64 is to be placed in the connecting support 65, and connecting support 65 is and steering base 310 applyings and solid with the bolt spiral shell; Steering gear worm 64 then passes for unmoving axle 34, and cooperates the setting of locking key 342, and steering gear worm 65 can be remained under the motionless state simultaneously with unmoving axle 34.

Synchronous rotating shaft 62 free ends of steering power source 60 then are directly to drive lazy-tongs 70, and lazy-tongs 70 comprise:

One first synchronizing shaft 71, it is a body of rod structure, and an end engages with a coupling spool 710, coupling spool 710 is a cylinder hollow sleeve, and two ends cooperate screw lock fixedly to stretch into the synchronous rotating shaft 62 at both ends and first synchronizing shaft, 71 ends in the lazy-tongs 70 with the fixedly fitting 711 of bolt form respectively; And the in addition end of first synchronizing shaft 71 passes one and is fixed in the synchronous pedestal 72 of first on the principal arm 31, and engage sleeves is provided with bearing and two groups of resistance to compression bearing group 80, make being positioned on the first synchronous pedestal 72 that first synchronizing shaft 71 can be certain, and first synchronizing shaft, 71 ends of passing the first synchronous pedestal 72 are provided with one first deflecting roller 712, to drive second deflecting roller 730 on second synchronizing shaft, 73 ends, and the end in addition of second synchronizing shaft 73 is provided with the 3rd deflecting roller 731 in addition, 731 the 4th deflecting rollers 740 of the 3rd deflecting roller with direction to the three synchronizing shafts 74 of synchronous strength steering horizontal, 74 of the 3rd synchronizing shafts pass the second synchronous pedestal 75 and the 3rd synchronous pedestal 76 that is fixed in auxiliary 32 bottoms and are provided with one the 5th deflecting roller 741 laterally is placed through auxiliary 32 bottoms with engagement drive one the 4th synchronizing shaft 77 the 6th deflecting roller 770, and the 4th synchronizing shaft 77 middle sections are with respect to colluding the synchronous piece 78 that line device 50 is provided with worm in addition, its synchronous piece 78 is nibbled transfer part 550 engagements with synchronous drive synchronously with the synchronous swivel base 55 that colludes line device 50, please cooperate shown in Figure 8.

The resistance to compression bearing group 80 of aforementioned each setting of cooperation, mainly be to have a roller bearing 81, please cooperate shown in Fig. 7 to 11, the roller bearing 810 of its roller bearing 81 is to become radially to be provided with, so can bear high axial force, cooperate the setting of the resistance to compression pad 82 of roller bearing 81 front and back ora terminalis, make overall co-ordination be arranged at each wheel or between centers, to bear maximum axial forces, to improve whole structural stability.

When the utility model in when action, promptly as shown in figure 12, the power source 61 of steering power source 60 begins to drive drive synchronous rotating shaft 62 and steering gear worm 64, unmoving axle 34 keeps motionless, steering power source 60 is that the center rotates with unmoving axle 34 promptly, simultaneously, driving revolution cantilever 30 rotates, drive lazy-tongs 70 backward rotation simultaneously, but line device 50 revisals of colluding that lazy-tongs 70 are driven are rotated the differential seat angle that produces because of revolution cantilever 30, make and collude angle and the car pin 13 that line device 50 can be correct and fit into the driving seam, and the rotation of revolution cantilever 30 is to cooperate foot-operated 21 to control, please cooperate and consult shown in Figure 12 A, when foot-operated 21 do not step, revolution cantilever 30 promptly remains in original position, and when foot-operated 21 step forward, shown in Figure 12 B, its revolution cantilever 30 is promptly to clockwise rotate, make by what the opening of sewing object small space can be inserted in these revolution cantilever 30 bottoms forward and collude line device 50, with the joint of sewing near user side's end, can produce revolution by foot-operated 21 control simultaneously, shown in Figure 12 C, turn round cantilever 30 and rely on the user this moment, the user can will be colluded line device 50 and carries out the operation of sewing towards oneself being inserted in by sewing thing opening, and very convenience is quick in the use.

For another shown in Figure 13, its be the car pin transmission mechanism that drives for driving shaft 12 with and guiding mechanism, this some is to belong to known structure, only draws at this, not the person who gives unnecessary details in addition; Figure 14,15 then is respectively the drive unit of work feed presser feet of the present utility model and compress pin, and this some is not emphasis of the present utility model place, so will not give unnecessary details.

Claims

1, the rotatable cantilever arrangement of a kind of leather goods sewing machine comprises:

2, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 1, it is characterized in that: this driving shaft is placed in the top of main body, driving shaft stretches out the power source that the outer end of main body is provided with belt pulley and support and interconnects, cooperate driving belt to connect the revolution cantilever and be provided with the cantilever drive in driving shaft, this cantilever drive is a toothed belt wheel.

3, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 2, it is characterized in that: this cantilever seat is the foundry goods of hollow, in the cantilever seat, be provided with the seat axle, on the seat axle drive being set is connected with above-mentioned driving belt, the end in addition of seat axle then cooperates the resistance to compression bearing group to fixedly install first deflecting roller, this first deflecting roller and the engagement of second deflecting roller, this is first years old, two deflecting rollers are to be bevel type gear, this second deflecting roller is fixedly arranged on second axle, this second axle fitted bearing is positioned in the axle sleeve, this axle sleeve is to be fixed on the cantilever seat, and second deflecting roller of second axle and shaft room also are provided with the resistance to compression bearing group, and this second axle in addition end pass axle sleeve and be installed with the 3rd deflecting roller, the 3rd deflecting roller is connected with this cantilever power transmission, this axle sleeve then in addition the fitted bearing group be positioned in the cantilever seat with large-scale resistance to compression bearing group, and this axle sleeve top cooperates gim peg and the principal arm that turns round cantilever to link into an integrated entity.

4, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 3, it is characterized in that: the resistance to compression bearing group of aforementioned each setting of cooperation, comprise roller bearing, the roller bearing of this roller bearing is to become radially to be provided with, and ora terminalis is provided with the resistance to compression pad before and after roller bearing.

5, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 1, it is characterized in that: this cantilever power transmission is to be equipped with first arm axle in the principal arm of revolution cantilever, first arm axle is provided with first deflecting roller, the first arm shaft extension is provided with second deflecting roller to the principal arm turning point, first, two deflecting rollers are bevel type gear, second deflecting roller and the 3rd deflecting roller that is vertically installed on the second interior arm axle of principal arm mesh, this second arm axle end in addition stretches in the auxiliary and is provided with the 4th deflecting roller, the 5th deflecting roller that the 4th deflecting roller and level are located on the 3rd arm axle of auxiliary bottom is meshing with each other, the end in addition of the 3rd arm axle then is provided with the 6th deflecting roller, the 6th deflecting roller then meshes is located at the 7th deflecting roller that colludes on the line device seat, be provided with the running down fluted disc and make active toothed disk and collude line device seat, and the 7th deflecting roller and the engagement of running down fluted disc, the running down fluted disc is held in addition and is done the active toothed disk engagement, do the active toothed disk center and be non-circular hole and collude the blocking of line bottom part body non-cylindrical configuration, but collude the bobbin that is provided with rotation in the line main body, colluding line main body top is covered with in addition and colludes the line lid, be rotatably positioned in synchronous swivel base and collude other fitted bearing group of line main body, this bearing group has positioning piece, and collude the line bottom part body relatively in keeper and be provided with ball and pad, the swivel base top is covered with flap in addition synchronously, and with this flap of bolting, and be provided with in the outside of synchronous swivel base most oblique wear the groove shape cooperate with described lazy-tongs nibble the transfer part synchronously.

6, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 1 is characterized in that: this revolution cantilever principal arm top is provided with steering power source in addition, and the principal arm top of revolution cantilever is provided with in addition:

7, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 6, it is characterized in that: steering power source is passed in the middle section of this unmoving axle, and this steering power source comprises:

One connects the synchronous rotating shaft of this steering power source;

8, the rotatable cantilever arrangement of leather goods sewing machine as claimed in claim 7, it is characterized in that: the synchronous rotating shaft free end of steering power source then is directly to connect lazy-tongs, and these lazy-tongs comprise: