CN112695465A

CN112695465A - Chain type roller foot machine for sewing two cloth feeding mechanisms of trouser legs

Info

Publication number: CN112695465A
Application number: CN202011553216.2A
Authority: CN
Inventors: 殷贵怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-04-23

Abstract

The invention discloses a chain type rumble leg machine for sewing two cloth feeding mechanisms of trouser legs. The servo motor drives the connector to drive the upper shaft, the crank at the front end of the upper shaft, the connecting rod arranged on the needle bar curve, the thread picking crank and the thread picking cross arm arranged on the needle bar, and the machine needle arranged on the needle bar to run up and down at a designated position. The invention can adjust the needle pitch through a mechanical or electric control program without changing teeth, can realize automatic high-speed operation, and improves the application range and the production efficiency.

Description

Chain type roller foot machine for sewing two cloth feeding mechanisms of trouser legs

Technical Field

The invention relates to the technical field of sewing machines, in particular to a chain type bottom-stitching machine of two cloth feeding mechanisms for sewing trouser legs.

Background

The invention aims to provide a chain type foot-rolling machine of two cloth feeding mechanisms for sewing trouser legs, which aims to solve the problems in the prior art that the foot-rolling machine is of a rotating structure, a needle swinging frame is easy to damage, an inner leather belt is easy to break, a needle bar is not provided with a positioning pin, a positioning slide block and a sliding chute, a thread take-up lever is easy to damage, automatic high-speed operation cannot be realized, the needle pitch can be adjusted only after a gear needs to be replaced, gear replacement cannot be realized, the needle pitch can be adjusted, and the needle pitch can not be adjusted according to the market requirements through an electric control program, the application range is small, the production efficiency is low, the problem of poor oil supply effect can also occur, and the service life of a machine is influenced.

Disclosure of Invention

The invention aims to provide a chain type bottom roller machine of two cloth feeding mechanisms for sewing trouser legs, which can adjust the needle pitch through a mechanical or electric control program without changing teeth, can realize automatic high-speed operation, and improves the application range and the production efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: a chain type windlass leg machine for two cloth feeding mechanisms for sewing trouser legs comprises an upper shaft linkage mechanism: the servo motor drives the connector to drive the upper shaft, the front end of the upper shaft is provided with a needle rod crank, then a connecting rod is pulled to drive the needle rod, a needle rod clamping pin and a sliding block sliding groove, so that the needle rod and a thread take-up lever vertically run without a needle swinging frame, and the needle rod is provided with a thread take-up crank and a thread take-up arm;

mechanical cloth feeding mechanism: the servo motor connector drives the upper shaft to drive a needle rod crank, a thread take-up lever, a needle rod clamping pin and a sliding block which are arranged at the front end of the upper shaft, the needle rod moves up and down, the bevel gear arranged at the upper end of the vertical shaft is driven by the bevel gear arranged at the rear end of the upper shaft to drive the vertical shaft to be provided with a bevel gear at the lower end of the vertical shaft, the vertical shaft is fixed by a sleeve and a screw up and down and then drives the lower short shaft bevel gear to drive the lower short shaft, the front and the rear of the lower short shaft are fixed by the screw, the middle part of the lower short shaft is provided with an oblique synchronizing gear to drive the lower long shaft, the front and the rear of the lower long shaft are fixed by the sleeve and the screw, the lower long shaft is provided with the lower oblique synchronizing gear, the front and the front of the lower long shaft are provided with the crank and the connecting rod group which enable the needle bending shaft to rotate and swing at, the needle guard plate of the curved needle, the curved needle seat, the curved needle, protect the needle piece, the curved needle is fixed with the screw, follow the curved needle axle to make a round trip the angle swing, with the eedle cooperation hook thread on the needle bar, the chain line is made up, the middle part has installed the loop and has driven the eccentric wheel before the major axis down, pull the eccentric pin, pull the cross axle again, it is fixed with screw tightring oil blanket around the cross axle, the hole has been processed at the cross axle middle part and has installed the eccentric pin, install the swing crank in addition, with the screw fixation, the fixer connecting rod has been installed on the swing crank, the fixer connecting rod is fixed with round pin and screw, pull the line shifting spool and install at the line shifting hook seat subassembly of line shifting spool front end again, with the line shifting hook together to shift the line ring, guarantee the eedle passes and inserts in the line ring after the cloth when the needle is gone down, the size of line ring is.

The back middle part of the upper shaft is provided with an eccentric crank which is fixed by a screw, the upper shaft is driven by a motor to drive the eccentric crank to drive a connecting rod, the eccentric crank and a bearing connecting rod are fixed by a baffle plate and the screw, the connecting rod and the three-star crank are fixed by the screw, the three-star crank is provided with an adjusting groove for loosening a connecting screw to increase the needle pitch forwards and reduce the needle pitch backwards, the adjusted back locking screw is used for adjusting the needed needle pitch, the three-star crank is fixed on three stars by the screw, (the three stars are one-way clutches), the eccentric crank is driven when the upper shaft rotates, the eccentric crank drives the connecting rod, the connecting rod drives the three-star crank to drive three stars, the three-star component is fixed by the three-star crank, the three stars, the three-star sleeve and the three-star roller, the spring, the other three stars, the positioning plate are fixed by the screw, the three-star crank is driven by the three stars to drive the three-star sleeve, and the three, the other three stars are arranged in the three-star sleeve to prevent reverse rotation, then the cloth feeding main shaft is driven to indirectly operate in a specified size, the cloth feeding main shaft is fixed in the middle of the machine shell, and is fixed by a front sleeve and a rear sleeve of the cloth feeding main shaft and screws, an upper driving gear is arranged at the front end of the cloth feeding main shaft, the cloth feeding main shaft drives a universal shaft, the universal shaft drives an upper cloth feeding gear by driving a cloth feeding short shaft, an upper driving gear arranged at the front end of the cloth feeding main shaft and a lower driven gear are further driven, a lower cloth feeding shaft is driven, the lower cloth feeding shaft is arranged in a long sleeve of the lower cloth feeding shaft, the long sleeve of the lower cloth feeding shaft is fixed by screws and a clamping plate, and the front end of the lower cloth feeding shaft is provided with a lower cloth feeding gear and an upper cloth feeding gear to feed cloth simultaneously to achieve the effects;

the motor cloth feeding mechanism comprises: the servo motor connector drives the upper shaft to drive a needle rod crank, a thread take-up lever, a needle rod clamping pin and a sliding block which are arranged at the front end of the upper shaft, the needle rod moves up and down, the bevel gear arranged at the upper end of the vertical shaft is driven by the bevel gear arranged at the rear end of the upper shaft to drive the vertical shaft to be provided with a bevel gear at the lower end of the vertical shaft, the vertical shaft is fixed by a sleeve and a screw up and down and then drives a lower short shaft bevel gear to drive a lower short shaft, the front and the rear of the lower short shaft are fixed by the screw, the middle part of the lower short shaft is provided with an upper oblique synchronizing gear to drive a lower long shaft, the front and the rear of the lower long shaft are fixed by the sleeve and a screw tightening ring, the crank and the connecting rod group arranged in front of the lower long shaft enable the curved needle shaft to rotate at a designated position, the curved needle protection piece curved needle is arranged at the front end of the curved needle seat, the looper is fixed by a screw, the looper moves with a looper shaft to rotate angularly, the looper is matched with a needle on a needle rod to hook a thread to be sewn, a loop driving eccentric wheel is arranged in the middle of the front of a lower long shaft, an eccentric pin is pulled, a cross shaft is pulled again, the front and the back of the cross shaft are fixed by a loop and a screw fastening ring, a hole is processed in the middle of the cross shaft, a swinging crank is arranged to install the eccentric pin and fixed by the screw, a fixer connecting rod is arranged on the swinging crank and fixed by the pin and the screw, a thread pulling shaft, a thread pulling hook seat component arranged at the front end of the thread pulling shaft and a thread pulling hook seat component arranged at the front end of the thread pulling shaft are pulled up to pull a thread ring to be larger, the thread ring is fixed to prevent the thread from being picked up, the front and the back of the thread pulling shaft are fixed by the loop and the screw, an upper shaft and a cloth feeding main shaft are respectively, the cloth feeding main shaft is driven to drive the upper driving gear, the cloth feeding main shaft drives the universal shaft and then drives the upper cloth feeding short shaft to drive the upper cloth feeding gear, the upper driving gear drives the lower driven gear and then drives the lower cloth feeding shaft, the lower cloth feeding shaft is arranged in the long sleeve of the lower cloth feeding shaft and is fixed by a bearing, a screw and a clamping plate, the lower cloth feeding gear and the upper cloth feeding gear are arranged at the front end of the lower cloth feeding shaft to feed cloth simultaneously, the effect of balanced cloth feeding is achieved simultaneously, the motor cloth feeding can achieve the effects of pre-sewing cloth feeding, electric control program display screen, touch screen, needle pitch adjustment and back 30 needles inner-back encryption to prevent scattered threads, the required needle pitch can be adjusted on the electric control program, and the trouble of gear replacement without machine needle pitch adjustment is solved;

vertical axis interlock mechanism: a bevel gear is arranged at the rear end of the upper shaft and then drives an upper bevel gear of the vertical shaft to drive the vertical shaft, and then drives a lower bevel gear of the vertical shaft arranged at the lower end of the vertical shaft and then drives a bevel gear of the lower short shaft, and a bevel synchronizing gear is arranged in the middle of the lower short shaft and drives a bevel synchronizing gear arranged on the lower long shaft;

the mechanical supporting mechanism comprises: an upper shaft front sleeve and an upper shaft middle sleeve are arranged on a machine shell, an oil seal, a bearing and a coupler play a role in fixing an upper shaft, a vertical shaft upper sleeve and a vertical shaft lower sleeve are arranged on the machine shell and play a role in fixing a vertical shaft, a cloth feeding main shaft front sleeve and a cloth feeding main shaft rear sleeve are arranged on the machine shell and play a role in fixing a cloth feeding main shaft, a lower short shaft front sleeve and a lower short shaft rear sleeve are arranged on the machine shell and play a role in fixing a lower short shaft, a lower long shaft front sleeve and a lower long shaft rear sleeve are arranged on the machine shell and play a role in fixing a lower long shaft, a thread shifting shaft front sleeve and a thread shifting shaft rear sleeve are arranged on the machine shell and play a role in fixing a thread shifting shaft, a needle bending shaft long sleeve and a needle bending shaft short sleeve are arranged on the machine shell and play a role in fixing a needle bending shaft, a foot pressing rod lower sleeve and an upper sleeve are arranged on the machine;

the cardan shaft mechanism: the universal shaft is installed at the front end of the cloth feeding main shaft, the connecting tug shaft plays a role in driving the cloth feeding gear to feed cloth, in the using process of the machine, the tug carrier, the cloth feeding gear, the cloth pressing frame and the presser foot can lift and place cloth and put down the cloth pressing and cloth feeding, if the transmission shaft cannot be extended, the problem that the presser foot cannot be lifted and closed and cannot be put down is easily shortened, the telescopic universal shaft is arranged for solving the problem of the machine, and the problem that the universal shaft cannot be stretched is solved.

Lower short and long axis gear shifting mechanism: the middle part of the lower short shaft is provided with an oblique synchronous gear which drives the oblique synchronous gear arranged on the lower long shaft to drive the lower long shaft, the front end of the lower long shaft is provided with an eccentric crank, the lower long shaft drives the eccentric crank, then drives a connecting rod and then drives a connecting piece, the connecting piece is fixed on a looper shaft by a screw, the connecting piece drives a looper shaft, the looper shaft drives a looper seat arranged at the front end of the looper shaft and the looper, a needle protection sheet and the needle hook of the sewing machine needle are matched in a swinging way;

a lower long shaft conversion mechanism: a loop driving eccentric wheel is arranged in the middle of the front end of the lower long shaft to drive an eccentric pin, a driving transverse shaft drives a swinging crank, a fixed connecting rod assembly and a wire shifting shaft, a wire shifting hook seat assembly and a wire shifting hook are arranged at the front end of the wire shifting shaft, and the wire shifting shaft swings back and forth to control a wire ring within a certain size along with the wire shifting shaft, so that wire jumping is prevented;

a thread trimming mechanism: the machine shell is provided with a thread cutting cylinder, a connecting rod and a needle plate, the output of the cylinder is controlled by a battery valve, so that the cylinder pulls the connecting rod to match with a thread cutting knife on the needle plate to finish the thread cutting function, the front end of the cylinder is provided with a shaft of a screw rod, a connecting square block is fixed at the front end of the shaft of the thread cutting cylinder through two nuts, when the cylinder pushes and pulls back, the connecting square block pulls a pull rod, a fixed knife, a pressing sheet, a splayed gasket and a movable knife are arranged on the needle plate, the gasket is fixed on the needle plate through screws, when the cylinder pushes and pulls back, the pull rod and the movable knife are pulled through the connecting square block, and the thread cutting function is achieved;

a bottom line mechanism: the outer end of the back of the shell is provided with a plurality of thread passing device fixing threads, the lower end of the shell is provided with a thread clamping device to lead the threads to pass stably so as to lead the bottom thread to adjust the pressure, the front end of the transverse shaft is provided with a routing crank, routing refers to tensioning a bottom line, the routing crank is fixed by screws, the routing crank arranged at the front end of the transverse shaft swings along with the transverse shaft, the routing crank is used for pulling back redundant wires when the bent needle swings back, the U-shaped wire passing device is arranged at the front end of the routing crank to play a role of fixing the wires, the front end is provided with a straight plate thread passing device fixing line, the rear lower end of the shell is provided with a cylinder bracket, the bracket is provided with a cylinder, a thread loosening sheet which drives the front end of the cylinder to be arranged, a fixer connecting rod which is arranged at the front end is fixed by screws and pins, a thread crank is arranged, after the thread is cut, the thread loosening sheet pulls back to open the thread clamping device, the thread is loosened, and meanwhile, the thread fixing crank is linked with the thread to fix the thread to prevent thread falling;

presser foot interlock mechanism: the front end of the machine shell is provided with a presser foot rod hole and an air cylinder screw hole, the presser foot rod is fixed by a screw thread connecting nut and the air cylinder and the presser foot rod are fixed by a sleeve and a screw up and down, the middle part of the presser foot rod is provided with a clamping and positioning plate to prevent left and right swinging, the lower end of the press rod is provided with an upper cloth feeding support, a presser foot pressure adjusting spring and an adjusting screw nut to adjust the pressure required by cloth pressing; during sewing, the foot edge cannot move when passing through a bone or going down a slope;

an oil supply mechanism: an oil basin is arranged at the lower end of the machine to store oil for the machine, and an oil pump is arranged at the lower end of the vertical shaft to supply oil for lubricating the machine; the device comprises an upper shaft, a middle sleeve, a front sleeve, a take-up lever connecting rod, a needle rod clamping pin, a sliding block, a sliding chute, a needle rod, a pressing rod positioning block, an upper shaft bevel gear, a vertical shaft upper and lower bevel gears, a lower shaft bevel gear, a lower short shaft, a bevel synchronizing gear, a lower long shaft, a cloth feeding main shaft three star, a transverse shaft, a crank, a connecting rod, a movable sleeve driving eccentric wheel, a fixed connecting rod and a needle bending shaft, and is more durable;

the control system comprises: through an electric control program, a display screen, a touch screen, a foot switch and a foot controller in an electric cabinet, a main shaft servo cloth feeding motor and an electromagnetic valve are controlled, the electromagnetic valve controls a wire pulling cylinder, a wire loosening cylinder, a wire shearing cylinder, a presser foot lifting cylinder and a winding drum cylinder to cut, loosen, pull and lift the presser foot when sewing is carried out, the winding drum is switched on and off, cloth is fed before sewing, and the electric control program adjusts the needle pitch and then encrypts in 30 needles after sewing to prevent the scattered threads.

Compared with the prior art, the invention has the following beneficial effects:

the invention relates to a cloth feeding tug assembly of a whole machine head, which comprises a vertical shaft component, an upper shaft component and a lower shaft component, wherein the vertical shaft component is vertically arranged, the two ends of the vertical shaft component are provided with bevel gears, the upper shaft component and the lower shaft component are horizontally arranged and are respectively meshed with the bevel gears, a connector is driven through a servo motor to drive an upper shaft, a crank at the front end of the upper shaft, a connecting rod arranged on a crank, a thread picking crank and a thread picking arm arranged on a needle rod, and a machine needle arranged on the needle rod move up and down at a designated position, a bevel gear arranged at the upper end of the vertical shaft is driven through the bevel gears arranged at the rear end of the upper shaft, the vertical shaft is driven, a bevel gear arranged at the lower end is driven through the vertical shaft, a bevel gear arranged at the rear end of a lower short shaft is driven to drive the lower short shaft and an oblique synchronous gear arranged on the lower short shaft, the oblique, the front end of the cross shaft is provided with a swinging crank and a connecting rod with a fixer, the connecting rod of the fixer pulls a thread pulling shaft, then drives a thread pulling component and a thread pulling hook to pull the thread loop to be large, so that each needle of a machine needle inserting needle is inserted into the thread loop to prevent thread jumping, the front end of the lower long shaft is provided with an eccentric crank, the connecting rod is pulled to pull a connecting piece and then drive a needle bending shaft to drive a needle bending seat and a needle bending needle, a needle protecting sheet is arranged, the needle bending seat and the needle bending needle are fixed on the needle bending shaft by screws to be matched with the machine needle to move, the purpose of thread hooking is achieved, chain stitch is achieved, a one-way clutch component or a servo stepping motor is arranged on a cloth feeding main shaft, and different cloth feeding modes are achieved.

Drawings

FIG. 1 is a diagram of the mechanical feed mechanism of the present invention;

FIG. 2 is a diagram of the motor feed mechanism of the present invention;

FIG. 3 is a diagram of the upper shaft linkage mechanism of the present invention;

FIG. 4 is a diagram of the motor feed mechanism of the present invention;

FIG. 5 is a diagram of the mechanical feed samsung and eccentric mechanism of the present invention;

FIG. 6 is a diagram of the machine support mechanism of the present invention;

FIG. 7 is a diagram of a cardan shaft mechanism of the present invention;

FIG. 8 is a gear shifting mechanism diagram of the present invention;

FIG. 9 is a lower shaft conversion mechanism diagram of the present invention;

FIG. 10 is a diagram of the thread trimming mechanism of the present invention;

FIG. 11 is a bottom line mechanism diagram of the present invention;

FIG. 12 is a view of a presser foot linkage mechanism of the present invention;

fig. 13 is a presser foot mechanism diagram of the present invention;

FIG. 14 is a diagram of the oil supply mechanism of the present invention;

fig. 15 is a control mechanism diagram of the present invention.

In the figure: 1 needle bar lower sleeve, 2 needle bar, 3 needle bar collet, 4 slide block, 5 sliding groove, 6 thread-picking clamping head, 7 needle bar upper sleeve, 8 thread-picking threading, 9 thread-protecting cover, 10 thread-arm pin, 11 thread-arm connecting rod, 12 thread-arm crank, 15 upper shaft front sleeve, 17 upper shaft, 18 upper shaft middle sleeve, 20 eccentric component, 21 upper shaft bevel gear, 22 oil seal, 25 shaft connector, 26 servo motor, 27 hand wheel, 28 bevel gear, 29 vertical shaft upper sleeve, 30 vertical shaft, 31 vertical shaft lower sleeve, 32 bevel gear, 33 oil pump, 34 bevel gear, 35 rear sleeve, 36 upper inclined synchronous gear, 37 front sleeve, 38 lower short shaft, 40 lower inclined synchronous gear, 43 lower long shaft, 44 front sleeve, 45 crank component, 46 movable sleeve driving eccentric wheel, 47 eccentric pin, 50 rear sleeve, 51 transverse shaft, 52 swinging crank, 55 glasses connecting rod, 57 fixer connecting rod, 58 thread-shifting shaft, 60 shifting fork seat, 61 shifting fork seat, 62 connecting rod, 63 thread shifting fork, 64 connecting chuck, 66 looper shaft rear sleeve, 68 looper shaft long sleeve, 69 looper shaft, 70 chin, 72 looper stand, 73 needle protecting sheet, 74 looper, 75 three-star plate, 78 three-star shaft, 80 three-star shaft front sleeve, 81 upper driving gear, 83 universal shaft, 84 short cloth feeding shaft, 85 cloth feeding wheel bracket, 86 upper cloth feeding wheel, 87 presser foot, 88 presser foot rod lower sleeve, 89 presser foot rod, 90 fixed chuck, 91 first presser foot screw, 92 presser foot starting cylinder, 93 lower driving gear, 94 lower cloth feeding shaft, 95 clamping plate, 96 cloth feeding shaft outer sleeve, 97 lower cloth feeding wheel, 98 small needle plate, 99, 100 fixed knife, 101 splay pad, 103 pressing sheet, 105 movable knife, 106 pad, 108 pull rod, 109 connecting block, 111 thread cutting cylinder, 112 three-star shaft rear sleeve, 113 motor base, 116 shaft connector, 117 stepping servo motor, 125 three-star block, 130 three-star sleeve, 131 three-star blade, 135 fixed blade, 159 thread releasing cylinder, 159, 160 fixing sheets, 163 loose wire long iron sheets, 164 bottom wire thread clamps, 165 fixing blocks, 166 tube clamping plates, 168 connecting plates, 169 connecting glasses, 170 wire bonders, 174 cylinder drawing cylinders, 177 wire drawing cylinders, 179 second presser foot screw, 180 cloth feeding wheel brackets, 183 cloth feeding wheel pin shafts, 186 presser foot pressure springs, 191 presser foot brackets, 193 oil mirrors, 194 oil return pipes, 195 oil conveying pipes, 196 oil conveying components, 197 control systems, 198 foot switches and 199 display screens, 200 foot controller, 201 solenoid valve, 202 filter, 203 pressure regulating meter, 211 first groove, 212 first cross hole block, 213 first cross pin, 214 second cross pin, 215 second groove, 216 first connecting shaft, 217 part middle shaft, 218 third groove, 220 second cross hole block, 221 third cross pin, 222 fourth cross pin, 223 fourth groove, 224 pressure foot piece, 225 spring, 226 fixed pin, 227 movable block and 228 positioning baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-15, the present invention provides a chain-type leg-sewing machine for sewing two kinds of cloth feeding mechanisms of the bottom of trousers, including a chain-type leg-sewing machine for sewing two kinds of cloth feeding mechanisms of the bottom of trousers, characterized in that: the cloth feeding mechanism comprises an upper shaft linkage mechanism, a cloth feeding mechanism, a vertical shaft linkage mechanism, a lower long shaft switching mechanism, a thread cutting mechanism, a bottom thread mechanism, a presser foot linkage mechanism, an oil supply mechanism and a control system, wherein the vertical shaft linkage mechanism is arranged at the bottom of the upper shaft linkage mechanism, the cloth feeding mechanism is arranged on the right side of the bottom of the upper shaft linkage mechanism, the lower long shaft switching mechanism is arranged at the bottom of the cloth feeding mechanism, the thread cutting mechanism is arranged at the bottom of the lower long shaft switching mechanism, the bottom thread mechanism is arranged at the bottom of the thread cutting mechanism, and the cloth feeding mechanism comprises a mechanical cloth feeding mechanism or a motor cloth feeding mechanism.

The upper shaft linkage mechanism comprises a lower needle bar sleeve 1, a needle bar 2, a needle bar chuck 3, a slide block 4, a slide groove 5, a thread picking arm chuck 6, an upper needle bar sleeve 7, a thread picking arm thread passing sleeve 8, a thread protecting cover 9, a thread arm pin 10, a thread arm connecting rod 11, a thread arm crank 12, an upper shaft front sleeve 15, an upper shaft 17, an upper shaft middle sleeve 18, an eccentric component 20, an upper shaft bevel gear 21, an oil seal 22, a first connector 25, a servo motor 26 and a hand wheel 27, wherein the lower needle bar sleeve 1 is sleeved on the surface of the needle bar 2, the needle bar chuck 3 is clamped on the surface of the needle bar 2, the slide block 4 is arranged inside the slide groove 5, the slide groove 5 is arranged on the surface of the thread crank 12, one side of the slide block 4 is connected with the needle bar chuck 3, the thread picking arm chuck 6 is arranged on the surface of the needle bar 2, the upper needle bar sleeve 7 is arranged on the top of the needle bar 2, the thread picking arm, the needle bar chuck 3 is fixedly connected with the thread arm crank 12 through a thread arm pin 10, the upper shaft 17 is arranged on the right side of the thread arm crank 12, the upper shaft front sleeve 15, the upper shaft middle sleeve 18, the eccentric component 20, the upper shaft bevel gear 21, the oil seal 22 and the first connector 25 are all sleeved on the surface of the upper shaft 17, the right end of the upper shaft 17 is fixedly connected with an output shaft of a servo motor 26, and the right side of the upper shaft 17 is connected with a hand wheel 27.

The vertical shaft linkage mechanism comprises a three-star shaft front sleeve 80, an upper driving gear 81, a universal shaft 83, a short cloth feeding shaft 84, a cloth feeding wheel support 85, an upper cloth feeding wheel 86, a presser foot 87, a presser foot rod lower sleeve 88, a presser foot rod 89, a fixed chuck 90, a presser foot screw 91, a pressure-raising beriberi cylinder 92, a lower driving gear 93, a lower cloth feeding shaft 94, a clamping plate 95, a cloth feeding shaft outer sleeve 96 and a lower cloth feeding wheel 97 which are arranged on the right side of the three-star shaft front sleeve 80, the upper driving gear 81 is arranged on the left side of the three-star shaft front sleeve 80, the universal shaft 83 is arranged on the left side of the upper driving gear 81, the short cloth feeding shaft 84 is arranged on the left side of the universal shaft 83, the upper cloth feeding wheel 86 is arranged inside the presser foot 87, the cloth feeding wheel support 85 is arranged on the outer side of the presser foot 87, the left side of the short cloth feeding shaft 84 is connected with the cloth feeding wheel support 85, the presser foot rod lower sleeve 88 is arranged on the top of the cloth feeding wheel support, the fixed chuck 90 is sleeved on the surface of the presser bar 89, the presser screw 91 is arranged at the top of the presser bar 89, the output shaft of the pressure-raising beriberi cylinder 92 is connected with the presser screw 91, the needle rod 2 is arranged inside the cloth feeding wheel bracket 85, the lower driving gear 93 is arranged at the bottom of the upper driving gear 81, the lower cloth feeding shaft 94 is arranged at the left side of the lower driving gear 93, the clamping plate 95 is arranged at the left side of the lower cloth feeding shaft 94, the right side of the cloth feeding shaft outer sleeve 96 is connected with the clamping plate 95, and the right side of the lower cloth feeding wheel 97 is connected with the cloth feeding shaft outer sleeve 96.

The mechanical cloth feeding mechanism comprises a three-star plate 75, a three-star shaft 78, a three-star block 125, a rolling shaft 126, a three-star sleeve 130, a three-star sheet 131 and a first fixing sheet 135, wherein the three-star plate 75, a three-star shaft front sleeve 80 and an upper driving gear 81 are all sleeved on the surface of the three-star shaft 78, the top of the three-star plate 75 is connected with the eccentric component 20 through screws, and the three-star block 125, the rolling shaft 126, the three-star sleeve 130, the three-star 131 and the first fixing sheet 135 are sequentially arranged on the right side of the three-star plate 75.

The motor cloth feeding mechanism comprises a three-star shaft rear sleeve 112, a motor base 113, a second coupler 116 and a stepping servo motor 117, the tail end of an output shaft of the stepping servo motor 117 is connected with the universal shaft 83, and the three-star shaft front sleeve 80, the upper driving gear 81, the three-star shaft rear sleeve 112, the motor base 113 and the coupler 116 are all sleeved on the output shaft of the stepping servo motor 117;

the lower long shaft switching mechanism comprises a first bevel gear 28, a vertical shaft upper sleeve 29, a vertical shaft 30, a vertical shaft lower sleeve 31, a second bevel gear 32, an oil pump 33, a third bevel gear 34, a rear sleeve 35, an upper oblique synchronous gear 36, a front sleeve 37, a lower short shaft 38, a lower oblique synchronous gear 40, a lower long shaft 43, a crank assembly 45, a loop driving eccentric wheel 46, an eccentric pin 47, a transverse shaft 51, a swing crank 52, an eyeglass connecting rod 55, a fixer connecting rod 57, a line shifting shaft 58, a shifting fork seat 60, a shifting fork seat 61, a connecting rod 62, a line shifting fork 63, a connecting chuck 64, a curved needle shaft rear sleeve 66, a curved needle shaft long sleeve 68, a curved needle shaft 69, a chin 70, a curved needle seat 72, a needle guard 73 and a curved needle 74, the first bevel gear 28 is arranged at the bottom of the upper shaft bevel gear 21, the vertical shaft upper sleeve 29 and the vertical shaft lower sleeve 31 are sleeved on the surface of the vertical shaft 30, the first bevel gear 28 is arranged at the top of the vertical shaft 30, the second bevel gear 32 is, the oil pump 33, the third bevel gear 34, the rear sleeve 35, the upper oblique synchronizing gear 36, the front sleeve 37 and the lower short shaft 38 are all arranged at the bottom of the second bevel gear 32, the lower oblique synchronizing gear 40, the lower long shaft 43, the crank assembly 45, the loop driving eccentric wheel 46 and the eccentric pin 47 are all arranged at the bottom of the upper oblique synchronizing gear 36, the eccentric pin 47 is arranged on the surface of the transverse shaft 51, the swing crank 52 is arranged on the surface of the transverse shaft 51, the glasses connecting rod 55 is connected to the swing crank 52, the fixer connecting rod 57, the thread pulling shaft 58, the shifting fork seat 60, the shifting fork seat 61, the connecting rod 62 and the thread pulling fork 63 are all arranged on the left side of the glasses connecting rod 55, the connecting chuck 64 is connected to the crank assembly 45, and the looper shaft rear sleeve 66, the looper shaft long sleeve 68, the looper shaft 69, the chin 70, the looper seat 72, the needle protection sheet 73 and the looper 74 are.

The thread trimming mechanism comprises a small needle plate 98, a needle plate 99, a fixed cutter 100, a splayed gasket 101, a pressing sheet 103, a movable cutter 105, a gasket 106, a pull rod 108, a connecting square 109 and a thread trimming cylinder 111, wherein the small needle plate 98 is arranged at the top of the needle plate 99, the fixed cutter 100, the splayed gasket 101, the pressing sheet 102, the pressing sheet 103, the movable cutter 105, the gasket 106, the pull rod 108 and the connecting square 109 are all arranged at the bottom of the needle plate 99, and an output shaft of the thread trimming cylinder 111 is connected with the pull rod 108 through the connecting square 109.

The bottom line mechanism comprises a line loosening cylinder 159, a second fixing plate 160, a line loosening long iron sheet 163, a bottom line clamping device 164, fixing iron 165, a pipe clamping plate 166, a line passing plate 167, a connecting plate 168, connecting glasses 169, a wire bonding device 170, a line pulling cylinder 174 and a line pulling cylinder 177, wherein the second fixing plate 160, the line passing plate 162, the line loosening long iron sheet 163, the bottom line clamping device 164, the fixing block 165, the pipe clamping plate 166, the line passing plate 167, the connecting plate 168, the connecting glasses 169, the wire bonding device 170, the line pulling cylinder 174 and the line pulling cylinder 177 are all arranged on the left side of the line loosening cylinder 159.

The presser foot linkage mechanism comprises a second presser foot screw 179, a cloth feeding wheel support 180, a cloth feeding wheel pin shaft 183, a presser foot pressure spring 186 and a presser foot support 191, wherein the cloth feeding wheel support 180, the cloth feeding wheel pin shaft 183, the presser foot pressure spring 186 and the presser foot support 191 are all arranged at the bottom of the second presser foot screw 179.

The oil supply mechanism comprises an oil mirror 193, an oil return pipe 194, an oil delivery pipe 195 and an oil delivery assembly 196.

The control system comprises a control system 197, a foot switch 198, a display 199, a foot controller 200, a solenoid valve 201, a filter 202, and a pressure regulator 203.

The mechanical feed general mechanical structure of the example of figure 1: the servo motor 26 drives the upper shaft 17 through the connector 24 and then drives the needle bar crank 12, the thread take-up lever, the needle bar 2 and the needle bar clamp 3, the pin and the slide block 4 and the needle which are arranged on the front end of the upper shaft to move up and down, the bevel gear 21 arranged on the rear end of the upper shaft drives the bevel gear 28 arranged on the upper end of the vertical shaft to drive the vertical shaft 30 to install the bevel gear 32 on the lower end of the vertical shaft, the vertical shaft is fixed by the sleeve and the screw up and down, then the lower short shaft bevel gear 34 is driven to drive the lower short shaft, the front and the back of the lower short shaft are fixed by the screw, the middle part of the lower short shaft is provided with the upper oblique synchronizing gear 36 to drive the lower long shaft 43, the front and the back of the lower long shaft are fixed by the sleeve and the screw, the lower oblique synchronizing gear 40 is arranged on the lower long shaft, the front end of the lower long shaft is provided with the crank 45 to drive the connector 64 and then drive the, the front end of the looper shaft is provided with a looper seat 72, a looper 74 and a needle protection piece 73, the looper seat and the needle protection piece are fixed by screws, the looper moves back and forth along with the looper shaft and is sewn with needle matching thread hooking on a needle rod, the front middle part of the lower long shaft is provided with a movable sleeve driving eccentric wheel 46, a pulling eccentric pin 47 and a transverse shaft 51 are pulled, the front and the back of the transverse shaft are fixed by a sleeve and a screw tight ring, the middle part of the transverse shaft is provided with a hole and is provided with an eccentric pin, the transverse shaft is fixed by screws, a fixing device connecting rod 57 is arranged on the swinging crank 52 and is fixed by pins and screws, the thread shifting shaft 58 and a thread shifting hook seat component arranged at the front end of the thread shifting shaft are pulled to shift a thread ring, the size of the thread ring is fixed to prevent thread picking, the front and the back of the thread shifting shaft are fixed by a sleeve and screws, the middle part of the back of, the driving upper shaft drives the eccentric crank to drive the connecting rod 121 again, the eccentric crank and the connecting rod are fixed by a baffle plate and a screw, the connecting rod and the three-star crank are fixed by a screw 76, the three-star crank is provided with an adjusting groove to loosen the connecting screw to increase the needle pitch forwards and reduce the needle pitch backwards, the adjusting screw is locked to achieve the required needle pitch after the adjustment, the three-star crank is fixed on the three-star by the screw, the three-star component is also named as a one-way clutch, the eccentric crank is driven when the upper shaft rotates, the eccentric crank drives the connecting rod 121 again, the connecting rod drives the three-star crank 124 to drive the three-star 125, the three-star component 75 is composed of the three-star crank, the three-star 125, the three-star sleeve 130, the three-star rolling shaft 126 and a spring 127, the other three-star positioning plate 135 is fixed by the screw, the connecting rod drives the three-star crank to drive the three-star, the three-star sleeve is driven again, the cloth feeding main shaft is fixed in the middle of the machine shell and fixed by a screw through a three-star shaft front sleeve rear sleeve tightening ring, an upper driving gear 79 is installed at the front end of the three-star shaft, the three-star shaft drives a universal shaft 83, the universal shaft drives a cloth feeding short shaft and then drives an upper cloth feeding gear 86, the upper driving gear installed at the front end of the three-star shaft drives a lower driven gear 93 and then drives a lower cloth feeding shaft 94, the lower cloth feeding shaft is installed in a lower cloth feeding shaft long sleeve 96 and fixed by a bearing, a screw and a clamping plate 95, and the front end of the lower cloth feeding shaft is provided with a lower cloth feeding gear and an upper cloth feeding gear which feed cloth simultaneously, so that the effect of synchronous balanced cloth feeding is achieved.

In the embodiment of the general mechanical structure of the motor cloth feeding of the drawing 2, the front part is the same as the mechanical part, only the transmission mode of the cloth feeding main shaft is changed, the upper shaft and the lower cloth feeding main shaft are respectively controlled by different motors, the servo motor on the upper shaft drives 26 the upper shaft, the lower cloth feeding main shaft is driven by the cloth feeding servo motor 117, the servo stepper motor arranged on the right side of the machine head drives the connector 115, the cloth feeding main shaft 78 is driven to drive the upper driving gear 81, the cloth feeding main shaft drives the universal shaft 83, the upper cloth feeding short shaft 84 drives the upper cloth feeding gear 86, the upper driving gear drives the lower driven gear 93 to drive the lower cloth feeding shaft 94, the lower cloth feeding shaft is arranged in the lower cloth feeding shaft long sleeve 96 and fixed by a bearing, a screw and a clamping plate 95, the lower cloth feeding gear 97 and the upper cloth feeding gear 86 are arranged on the front end of the lower cloth feeding shaft to feed cloth, the effect of simultaneous balance of cloth feeding is achieved, the motor cloth feeding achieves, The electronic control program display screen touch screen needle pitch adjustment and the needle pitch encryption function in 30 needles after sewing can prevent thread scattering, can achieve the purpose of adjusting the required needle pitch on the electronic control program, and is not troublesome for adjusting the needle pitch and changing gears for machines.

In the upper shaft linkage mechanism diagram of the embodiment shown in FIG. 3, the servo motor 26 drives the connectors 24 and 25 to drive the upper shaft, the needle bar crank 12 is installed at the front end of the upper shaft, the connecting rod 11 is pulled to drive the needle bar 2, the needle bar clamp 3 and the sliding block 4, the thread take-up crank 6 and the thread take-up arm 8 are installed on the needle bar, and the needle bar 2 and the thread take-up arm vertically run without a needle swinging frame.

In the embodiment of the cloth feeding mechanism of fig. 4, the three-star shaft is driven by a cloth feeding servo motor 117, a servo stepper motor installed at the right side of the machine head drives a connector 115 to drive the three-star shaft 78, an upper driving gear 81 is driven, and the three-star shaft drives a universal shaft 83.

Figure 5 mechanical feed three stars and eccentric mechanics diagram of the example. An eccentric crank 118 is installed at the rear middle part of the upper shaft and fixed by a screw, a connector 27 is driven by a motor 26 to drive the upper shaft and then drive the eccentric crank and then drive a connecting rod 121, the eccentric crank and the connecting rod are fixed by a baffle plate and a screw, the connecting rod and the three-star crank are fixed by a screw 76, the three-star crank is provided with an adjusting groove to loosen a connecting screw to increase the needle pitch forwards and reduce the needle pitch backwards, the rear locking screw is adjusted to achieve the required needle pitch, the three-star crank is fixed on three stars by screws, the three-star assembly is also named as a one-way clutch, the eccentric crank drives the connecting rod 121 when the upper shaft rotates, the connecting rod drives the three-star crank 124 to drive the three stars 125, the three-star assembly 75 (composed of the three-star crank, the three stars 125, the three-star sleeve 130, the three-star roller 126 and a spring 127, the three-star positioning plate 135 at the other side is fixed by screws, and, the three stars then drive the three-star sleeve, the three-star sleeve is fixed on the three-star shaft by screw-the three stars are mounted in the three-star sleeve to prevent reverse rotation, then drive the three-star shaft 78 to indirectly rotate in the specified size, the cloth feeding main shaft is fixed in the middle of the machine shell and fixed by the fastening ring of the three-star shaft front sleeve and screw, the front end of the three-star shaft is equipped with the upper driving gear 79, and the three-star shaft then drives the universal shaft 83.

In the machine supporting mechanism diagram of the embodiment shown in fig. 6, an upper shaft front sleeve 15 and an upper shaft middle sleeve 18 are arranged on a machine shell, an oil seal 22, a bearing 23 and a coupling 24 play a role of fixing an upper shaft, a vertical shaft upper sleeve 29 and a vertical shaft lower sleeve 31 are arranged on the machine shell and play a role of fixing a vertical shaft 30, a three-star shaft front sleeve 80 and a three-star shaft rear sleeve 112 are arranged on the machine shell and play a role of fixing a three-star shaft 78, a lower short shaft front sleeve 37 and a rear sleeve 35 are arranged on the machine shell and play a role of fixing a lower short shaft 38, a lower long shaft front sleeve 44 and a rear sleeve 42 are arranged on the machine shell and play a role of fixing a lower long shaft 43, a thread pulling shaft front sleeve 59 and a rear sleeve 204 are arranged on the machine shell and play a role of fixing a thread pulling shaft 58, a needle bending shaft long sleeve 68 and a short sleeve 66 are arranged on the machine shell and play a role of fixing a needle bending shaft 69, a role of fixing a foot pressing rod lower sleeve 88 and an upper, the machine shell is provided with a needle bar upper sleeve 7 and a needle bar lower sleeve 1 which play a role in fixing the needle bar 2.

In the gear conversion mechanism diagram of fig. 8, a bevel gear 32 is mounted at the lower end of a vertical shaft, the vertical shaft is fixed by a sleeve and a screw up and down, a lower short shaft bevel gear 34 is driven to drive a lower short shaft, the lower short shaft is fixed by a front sleeve, a rear sleeve, a tight ring 39 and a screw, an upper oblique synchronizing gear 36 is arranged in the middle of the lower short shaft to drive a lower long shaft 43, the lower long shaft is fixed by a front sleeve, a rear sleeve, a tight ring 42 and a screw, and a lower oblique synchronizing gear 40 is mounted on the lower long shaft to complete.

In the embodiment of the lower shaft switching mechanism of FIG. 7, a bevel gear 32 is installed at the lower end of a vertical shaft, the vertical shaft is fixed by a sleeve and a screw up and down, a lower short shaft bevel gear 34 is driven, a lower short shaft is driven, the lower short shaft is fixed by a front sleeve, a rear sleeve, a tight ring 39 and the screw, an upper oblique synchronizing gear 36 is arranged in the middle of the lower short shaft to drive a lower long shaft 43, the lower long shaft is fixed by the front sleeve, the tight ring 42 and the screw, a lower oblique synchronizing gear 40 is installed on the lower long shaft to complete synchronization, a crank 45 is installed at the front end of the lower long shaft to drive a connector 64 and a looper shaft 69, the looper shaft is fixed by a sleeve and the tight ring of the screw up and down, a crank and a movable sleeve driving eccentric gear 46 are installed at the front end of the lower long shaft to enable the looper shaft to move back and forth at a designated position, a looper base 72, a looper 74 and a needle protection plate 73 are installed, a loop driving eccentric wheel 46 is arranged in the front middle part of the lower long shaft, an eccentric pin 47 is pulled, a transverse shaft 51 is pulled again, the front and the back of the transverse shaft are fixed through a loop and a screw tightening ring, a hole is processed in the middle of the transverse shaft, an eccentric pin is arranged on the eccentric pin, a swing crank is arranged on the transverse shaft and fixed through a screw, a fixer connecting rod 57 is arranged on the swing crank 52 and fixed through a pin and a screw, a wire shifting shaft 58 and a wire shifting hook seat assembly arranged at the front end of the wire shifting shaft are pulled again, the wire shifting ring is shifted to be large through the wire shifting hook, the size of the wire ring is fixed, and the front and the back of.

In the embodiment shown in fig. 8, the looper driving eccentric wheel assembly is a looper driving eccentric wheel, which comprises an eccentric 153, a porous gasket 152, a retainer ring 149, a bearing 150, a perforated sphere 154, a cover plate shell 155, and a baffle 148 formed by side cover plates, a screw pin 156 fixed by screws, a line 147 fixed by screws, an eccentric pin 47 with one side fixed to an inner hole of the sphere 154 and the other side fixed to the middle end of a transverse shaft, a lower long shaft rotating to drive the looper driving eccentric wheel, and then the eccentric pin, and then the front end of the lower long shaft of the transverse shaft to be provided with a small crank 146, an upper connecting rod 144 and a copper sleeve 145 mounted on the small crank, fixed by a gasket 143 and a screw 142, a connecting rod assembly 64 and a connecting rod fixed by a screw and a pin 65, and a connecting rod fixed on a looper shaft by.

In the embodiment of the thread trimming mechanism shown in fig. 9, a thread trimming cylinder 111 and a thread trimming needle plate 99 are installed on a machine shell, a battery valve 201 controls the output of air, so as to push and pull the cylinder, the front end of the cylinder is a shaft with a screw, a connecting block 109 is fixed at the front end of the shaft of the thread trimming cylinder 111 through two nuts 110, a pull rod 108 is pulled through the connecting block 109 when the cylinder pushes and pulls, a fixed knife 100, a pressing sheet 102, a pressing sheet 103, a splayed gasket 101, a movable knife 105 and a gasket 106 are installed on the needle plate through screws 107, and when the cylinder pushes and pulls, the pull rod is pulled through the connecting block, the movable knife is pulled through the pull rod, and the thread trimming function is achieved.

A bottom thread mechanism, a plurality of thread passing device fixing threads are arranged at the rear outer end of the machine shell, a thread clamping device is arranged at the lower end of the machine shell to allow the threads to smoothly pass through so as to allow the pressure of the bottom thread to be adjusted, a thread bonding device 171 and a thread bonding device 170 are arranged at the front end of a cross shaft 51, the thread bonding device is used for tensioning the bottom thread, a thread bonding crank is fixed by screws, the thread bonding crank arranged at the front end of the cross shaft swings along with the cross shaft, the purpose that the excess threads are pulled back by the thread bonding crank when a bending needle 74 swings back is realized, a U-shaped thread passing device 172 is arranged at the front end of the thread bonding crank to play the role of fixing threads, the function of fixing the straight plate thread passing device is arranged at the front end, a cylinder bracket 160 is arranged at the rear lower end of the machine shell, a cylinder 159 is arranged on the bracket to drive a thread loosening piece 164 arranged at the front end of the cylinder, a fixing device connecting rod 168 arranged at the front end is fixed by screws and the thread, meanwhile, the thread-setting crank is linked with the thread to fix the thread to prevent the thread from falling off.

In the embodiment of the presser foot linkage mechanism diagram shown in the figure 10, a presser foot rod hole and an air cylinder thread hole are processed at the front end of a shell, a presser foot rod is vertically fixed with an air cylinder 92 and a presser foot rod 89 through a sleeve and a screw, the middle part of the presser foot rod is fixed with a clamping and positioning plate 90 through a screw tooth connecting nut to prevent the left and right swinging, an upper cloth feeding support 180, a presser foot support 191, a presser foot 87, a pressure adjusting spring 186 and an adjusting screw 179 nut 187 are installed at the lower end of the presser foot to adjust the pressure required by cloth pressing, a pedal controller is used for supplying signals to control the electric control in a reverse pedaling mode, the electric control supplies air to the air cylinder through a signal electromagnetic valve, and the presser foot rod, the presser foot support, an upper cloth.

In the oil supply mechanism diagram shown in the embodiment 11, an oil pump is arranged at the lower end of a vertical shaft to supply oil for machine lubrication; the machine is characterized in that oil is supplied to an upper shaft, a gear, a take-up lever, a vertical shaft upper bevel gear, a vertical shaft lower bevel gear, a lower shaft bevel gear, a lower short shaft, an oblique synchronizing gear, a lower long shaft, a cloth feeding main shaft three stars, a cross shaft, a crank, a connecting rod, a movable sleeve driving eccentric wheel, a fixed connecting rod and a curved needle shaft, so that the machine is more durable.

In the embodiment, the control mechanism diagram of fig. 12 is to cut, loosen, pull, lift and press the foot and switch the reel when sewing is performed by an electric control program 172 in an electric cabinet, a touch display screen 173, a foot switch 198, a foot controller 200, a control spindle motor 21, a servo cloth feeding motor 108 and an electromagnetic valve 16, wherein the electromagnetic valve controls a thread pulling cylinder 168, a thread loosening cylinder 145, a thread cutting cylinder 103, a pressure lifting and pressing cylinder 87 and a reel cylinder 174.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a chain rumble foot machine that is used for two kinds of work feed mechanisms of sewing bottom of a trouser leg which characterized in that: the cloth feeding mechanism comprises an upper shaft linkage mechanism, a cloth feeding mechanism, a vertical shaft linkage mechanism, a lower long and short shaft conversion mechanism, a wire cutting mechanism, a bottom wire winding mechanism, a presser foot linkage mechanism, an oil supply mechanism and a control system, wherein the vertical shaft linkage mechanism is arranged at the lower end of the upper shaft linkage mechanism, the cloth feeding mechanism is arranged on the right side of the lower end of the upper shaft linkage mechanism, the lower long shaft conversion mechanism is arranged at the lower end of the cloth feeding mechanism, the wire cutting mechanism is arranged below a needle plate and at the bottom of the lower long shaft conversion mechanism, the bottom wire mechanism is arranged in front of a machine bottom plate, and the cloth feeding mechanism comprises a mechanical cloth feeding mechanism or a motor cloth feeding;

the upper shaft linkage mechanism comprises a lower needle rod sleeve (1), a needle rod (2), a needle rod clamping pin (3), a sliding block (4), a sliding groove (5), a thread picking arm clamping pin (6), an upper needle rod sleeve (7), a thread picking arm (8), a thread protecting cover (9), a thread picking arm pin (10), a thread picking arm connecting rod (11), a thread picking arm crank (12), an upper shaft front sleeve (15), an upper shaft (17), an upper shaft middle sleeve (18), an eccentric component (20), an upper shaft bevel gear (21), an oil seal (22), a coupling (25), a servo motor (26) and a hand wheel (27), wherein the lower needle rod sleeve (1) is sleeved on the surface of the needle rod (2), the needle rod clamping pin (3) is clamped on the surface of the needle rod (2), the sliding block (4) is arranged inside the sliding groove (5), the sliding groove (5) is arranged inside a machine shell beside the needle rod, the sliding block (12) is arranged on one side of the sliding block (4), and, the thread-picking cross-arm clamp (6) is arranged on the surface of the needle bar (2), the needle bar upper sleeve (7) is arranged at the top of the needle bar (2), the thread take-up cross-arm thread passing sheet (8) is arranged on the thread take-up crank clamp (6), the thread protecting cover (9) is arranged on a shell at the upper end of the thread take-up cross-arm thread passing sheet (8), the needle bar clamping pin (3) is fixedly connected with a thread arm crank (12) through a thread arm pin (10), the upper shaft (17) is arranged on the right side of the cross arm crank (12), the upper shaft front sleeve (15), the upper shaft middle sleeve (18), the eccentric component (20), the upper shaft bevel gear (21), the oil seal (22) and the coupling (25) are arranged on the upper shaft (17), the right end of the upper shaft (17) is connected with a connector on the shaft of the servo motor (26), the hand wheel (27) is fixedly connected with the upper shaft, and a right motor shaft (27) of the motor is arranged on the hand wheel (27) and is fixed by screws;

the vertical shaft linkage mechanism comprises a three-star shaft front and rear sleeve (80), an upper driving gear (81), a universal shaft (83), a short cloth feeding shaft (84), a cloth feeding wheel support (85), an upper cloth feeding wheel (86), a presser foot (87), a presser foot rod lower sleeve (88), a presser foot rod (89), a fixed chuck (90), a presser foot screw rod (91), a presser foot cylinder (92), a lower driven gear (93), a lower cloth feeding shaft (94), a clamping plate (95), a cloth feeding shaft outer sleeve (96) and a lower cloth feeding wheel (97), the upper driving gear (81) is arranged on the right side of the three-star shaft front sleeve (80), the universal shaft (83) is arranged on the left side of the upper driving gear (81), the short cloth feeding shaft (84) is arranged on the left side of the universal shaft (83), the upper cloth feeding wheel (86) is arranged inside the presser foot (87), the cloth feeding wheel support (85) is arranged on the outer side of the presser foot (87), the left side of the short cloth feeding shaft (84) is connected with a cloth feeding wheel bracket (85), the lower sleeve (88) of the presser foot rod is arranged at the upper part of the cloth feeding wheel bracket (85), the lower sleeve (88) of the presser foot rod is sleeved on the surface of the presser foot rod (89), the fixed chuck (90) is sleeved on the surface of the presser foot rod (89), the presser foot screw rod (91) is arranged at the top of the presser foot rod (89), the output shaft of the presser foot lifting cylinder (92) is connected with the presser foot screw rod (91), the needle rod (2) is arranged at the front end (85) of the machine shell, the lower driven gear (93) is arranged at the bottom of the upper driving gear (81), the lower cloth feeding shaft (94) is arranged at the left side of the lower driven gear (93), the clamping plate (95) is arranged at the upper side of the lower cloth feeding shaft (94), the right side of the cloth feeding shaft outer sleeve (96) is connected with the clamping plate (95), and the right side of the lower cloth feeding wheel (97) is connected with the cloth feeding shaft (96);

the mechanical cloth feeding mechanism comprises a three-star plate (75), a three-star shaft (78), a three-star (125), a rolling shaft (126), a three-star sleeve (130), a three-star sheet (131) and a fixing sheet (135), wherein a crank (75), a three-star shaft front sleeve (80) and an upper driving gear (81) are all sleeved on the surface of the three-star shaft (78), the crank (75) is connected with the eccentric component (20) through screws, and the three-star (125), the rolling shaft (126), the three-star sleeve (130), the three-star (131) and the fixing sheet (135) are sequentially arranged on the right side of the three-star crank (75);

the motor cloth feeding mechanism comprises a cloth feeding main shaft rear sleeve (112), a motor base (113), a coupler (116) and a stepping servo motor (117), an output shaft of the stepping servo motor (117) and the tail end of the cloth feeding main shaft are connected with a universal shaft (83), the cloth feeding main shaft (11), a driving gear (81), the cloth feeding main shaft rear sleeve (112), the motor base (113) and the coupler (116) are all sleeved on an output shaft of the stepping servo motor (117), the main shaft motor (26) and the stepping servo motor (117) are matched with a computer program, the main shaft motor (26) rotates for one circle, one needle is driven by the stepping servo motor (117), the needle pitch is adjusted to drive an upper shaft (17) and a needle rod crank (12) arranged at the front end of the upper shaft to rotate when the main shaft motor (26), a connecting rod (11), a needle rod clamping pin (3), a sliding block (4) and a needle rod (2) to run up and down, when the upper servo motor drives the upper shaft and the connecting piece to pull the machine needle on the needle rod to leave the cloth, cloth feeding is started, the stepping servo motor (117) is matched with the upper servo motor (26), the stepping servo motor (117) drives the upper cloth feeding wheel (86) and the lower cloth feeding wheel (97) to indirectly operate, the cloth feeding amount of the upper cloth feeding wheel (86) and the lower cloth feeding wheel (97) can be controlled through an electric control program, cloth feeding before sewing, needle pitch adjustment and encrypted needle pitch in 30 needles after sewing can be adjusted on a touch screen, and chain type line scattering is prevented.

2. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the lower long shaft conversion mechanism comprises an upper shaft bevel gear (28), a vertical shaft upper sleeve (29), a vertical shaft (30), a vertical shaft lower sleeve (31), a vertical shaft lower bevel gear (32), an oil pump (33), a lower short shaft bevel gear (34), a rear sleeve (35), an upper oblique synchronous gear (36), a front sleeve (37), a lower short shaft (38), a lower long shaft oblique synchronous gear (40), a lower long shaft (43), a crank assembly (45), a movable sleeve driving eccentric wheel (46), an eccentric pin (47), a transverse shaft (51), a swinging crank (52), a glasses connecting rod (55), a fixer connecting rod (57), a wire shifting shaft (58), a shifting fork seat (60), a shifting fork seat (61), a connecting rod (62), a wire shifting fork (63), a connecting shaft assembly clamp (64), a curved needle shaft rear sleeve (66), a curved needle shaft long sleeve (68), a curved needle shaft (69), a lower jaw (70), a curved needle seat (72), a needle protection sheet (73), The bevel gear mechanism comprises a curved needle (74), a vertical shaft upper bevel gear (28) is arranged at the bottom of an upper shaft bevel gear (21), a vertical shaft upper sleeve (29) and a vertical shaft lower sleeve (31) are both sleeved on the surface of a vertical shaft (30), the vertical shaft upper bevel gear (28) is arranged at the upper end of the vertical shaft (30), a vertical shaft lower bevel gear (32) is arranged at the lower end of the vertical shaft (30), an oil pump (33), a lower short shaft bevel gear (34), a rear sleeve (35), a lower short shaft oblique synchronizing gear (36), a front sleeve (37), a lower short shaft (38) are all arranged on the lower short shaft (32), a lower oblique synchronizing gear (40), a lower long shaft (43), a crank component (45), a loop driving eccentric wheel (46) and an eccentric pin (47) are all arranged on the lower long shaft (36), the eccentric pin (47) is arranged in the middle of a transverse shaft (51), and swing cranks (52) are all arranged on the surface of the transverse shaft (51), glasses connecting rod (55) are connected on swing crank (52), fixer connecting rod (57), dial spool (58), shift fork seat (60), shift fork seat (61), connecting rod (62), dial fork (63) all set up on the left side swing axle of glasses connecting rod (55), connect chuck (64) and connect on crank assembly (45), cover (66), the long cover of looper axle (68), looper axle (69), chin (70), looper seat (72), needle guard piece (73), looper (74) all set up on looper axle (64) behind the looper axle.

3. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the trimming mechanism comprises a small needle plate (98), a needle plate (99), a fixed cutter (100), an 8-shaped gasket (101), a pressing sheet (103), a movable cutter (105), a gasket (106), a pull rod (108), a connecting square block (109) and a trimming cylinder (111), wherein the small needle plate (98) is arranged at the top of the needle plate (99), the fixed cutter (100), the splayed gasket (101), the pressing sheet (102), the pressing sheet (103), the movable cutter (105), the gasket (106), the pull rod (108) and the connecting square block (109) are all arranged at the bottom of the needle plate (99), and an output shaft of the trimming cylinder (111) is connected with the pull rod (108) through the connecting square block (109).

4. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the bottom line mechanism comprises a line loosening cylinder (159), a second fixing plate (160), a line loosening long iron sheet (163), a bottom line wire clamping device (164), fixing iron (165), a pipe clamping plate (166), a line passing device (167), a connecting plate (168), connecting glasses (169), a wire bonding device (170), a tube drawing cylinder (174) and a line drawing cylinder (177), wherein the second fixing plate (160), the line passing device (162), the line loosening long iron sheet (163), the bottom line wire clamping device (164), the fixing block (165), the pipe clamping plate (166), the line passing device (167), the connecting plate (168), the connecting glasses (169), the wire bonding device (170), the tube drawing cylinder (174) and the line drawing cylinder (177) are all arranged on the left side of the line loosening cylinder (159).

5. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the presser foot linkage mechanism comprises a second presser foot pressure screw (179), a cloth feeding wheel bracket (180), a presser foot bracket pin (183), a presser foot pressure spring (186) and a presser foot bracket (191), and the cloth feeding wheel bracket (180), the presser foot bracket pin (183), the presser foot pressure spring (186) and the presser foot bracket (191) are all arranged in the upper dragging wheel frame (180).

6. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the oil supply mechanism comprises an oil mirror (193), an oil return pipe (194), an oil conveying pipe (195) and an oil conveying assembly (196).

7. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the control system comprises a control system (197), a foot switch (198), a display screen, a touch screen (199), a foot controller (200), an electromagnetic valve (201), a filter (202) and a pressure regulating meter (203).

8. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the universal shaft (83) comprises a first groove (211), a first cross hole block (212), a first cross pin (213), a second cross pin (214), a second groove (215), a first connecting shaft (216), a part middle shaft (217), a third groove (218), a second cross hole block (220), a third cross pin (221), a fourth cross pin (222) and a fourth groove (223).

9. The chain-type rumble leg machine for sewing two kinds of cloth feeding mechanisms of trouser legs according to claim 1, characterized in that: the presser foot (87) comprises a presser foot piece (224), a spring (225), a fixed pin (226), a movable block (227) and a positioning blocking piece (228).