CN112760844A

CN112760844A - A rumble foot machine that is used for sewing bottom of a trouser leg to have two kinds of work feed mechanisms

Info

Publication number: CN112760844A
Application number: CN202011553219.6A
Authority: CN
Inventors: 殷贵怀
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-05-07

Abstract

The invention discloses a leg-rolling machine with two cloth feeding mechanisms for sewing trouser legs, which comprises a machine shell part, a control mechanism, a thread-cutting accessory mechanism, an oil supply mechanism, a transmission mechanism, a three-star transmission mechanism, a thread-cutting mechanism, a thread-pulling mechanism, a presser foot mechanism, a tube-pulling mechanism, a pneumatic element mechanism, a fixing mechanism and a winding drum opening and closing mechanism. The first cloth feeding mechanism is mechanical cloth feeding, sewing needle pitch work is completed, the working procedures of wire pulling, wire cutting, wire shifting and presser foot lifting are completed through an electric control procedure, an electromagnetic valve and an air cylinder, the wire cutting mechanism automatically completes wire cutting work, and labor intensity of operators is reduced; the second cloth feeding mechanism is a motor cloth feeding mechanism which drives a lower long cloth feeding shaft, a lower cloth feeding gear arranged at the front end of the lower cloth feeding shaft and an upper cloth feeding tooth to synchronously feed cloth in parallel, and the motor cloth feeding realizes the effects of adjusting the stitch length in a computer, sewing the front cloth, and then encrypting the stitch length to prevent the trouble of thread scattering.

Description

A rumble foot machine that is used for sewing bottom of a trouser leg to have two kinds of work feed mechanisms

Technical Field

The invention relates to the technical field of sewing machines, in particular to a foot rumbling machine with two cloth feeding mechanisms for sewing trouser legs.

Background

A foot rumbling cart is mainly used in the textile machinery industry and is an important textile processing machinery device, when an existing foot rumbling machine is operated, an operator needs to push a belt pulley to stop a needle at the highest position with one hand, holds a workpiece with the other hand, steps on a pedal plate with the other foot to lift a presser foot to place the workpiece, releases the pedal plate after the workpiece is placed, steps on a motor pedal with the other foot to work the machine, steps on the presser foot pedal to take out the workpiece after sewing, and pulls a thread to a blade position to cut the thread to complete the operation, so that the operation of workers is very complicated, the technical requirements are high, the speed is reduced to reduce the processing rate while the working difficulty is high, and when the existing foot rumbling cart is operated, the operator needs to push the belt pulley with one hand, hold the workpiece with one hand, lift the presser foot and step on a control pedal with one foot to work the machine, otherwise, the machine can be stopped disorderly, and cannot continue to work, therefore, the operating mechanism has higher requirements on the operating technology of workers, simultaneously reduces the operating speed of the workers, thereby reducing the processing efficiency, and the high-speed operation in the current market machine cannot be obtained, the operating mechanism pulls the belt through the motor arranged below the bedplate, pulls the belt on the upper shaft, pulls the belt wheel on the upper shaft, pulls the hand wheel, pulls the upper shaft, drives the needle rod crank arranged in front of the machine head, pulls the thread take-up rod, pulls the needle rod arranged on the needle swing frame to operate up and down, the operation of the needle swing frame is realized by the eccentric wheel arranged in the front middle part of the machine head, pulls the connecting rod, pulls the needle swing shaft, the crank, pulls the needle swing shaft and pulls the needle swing frame to operate, so that the machine is operated at a medium speed and at a high speed, the needle swing shaft, the thread take-up rod, the needle swing frame and the needle rod cannot provide enough oil, parts are damaged quickly when the machine is operated at a high speed, in, then passing through a reduction gear, passing through the reduction gear again, passing through a pitch gear shaft, driving a synchronous gear again, pulling an upper cloth feeding wheel and a lower cloth feeding wheel to feed cloth, and having the problems that the gears are too many and are damaged quickly during high-speed operation, and the pitch can not be adjusted. To this end, we propose a hemming machine with two feed mechanisms for sewing the bottom of a trouser leg.

Disclosure of Invention

The invention aims to provide a foot rumbling machine with two cloth feeding mechanisms for sewing trouser legs, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a foot-reeling machine with two cloth-feeding mechanisms for sewing trouser legs comprises a machine shell, a control mechanism, a thread-cutting accessory mechanism, an oil supply mechanism, a transmission mechanism, a three-star transmission mechanism, a thread-cutting mechanism, a thread-drawing mechanism, a presser foot mechanism, a cylinder-drawing mechanism, a pneumatic element mechanism, a fixing mechanism and a reel opening and closing mechanism, wherein the transmission mechanism drives a winding crank arranged in the middle of an upper shaft through a servo direct drive motor and an upper shaft connected with a front end connector of the motor, then drives a winder arranged on a machine shell to move around a bottom line, then drives a needle rod crank arranged at the front end of the upper shaft through the upper shaft, then drives a thread-taking-up rod to move, pulls the needle rod and a machine needle arranged on the upper end of the needle rod to move up and down to be matched with a shuttle bed, drives an upper bevel gear arranged on the vertical shaft to move through an upper shaft bevel gear, the bevel gear installed at the rear end of the lower shaft is driven to rotate, the lower shaft is driven to be matched with a needle of a shuttle race installed at the front end of the lower shaft in a rotating mode, the three-star crank is driven to be pulled through an eccentric crank and a bearing installed on the upper shaft, a needle pitch adjusting groove is formed in the joint of the three-star crank and the connecting rod, the needle pitch adjusting screw is loosened, the connecting joint is pushed forwards to increase the needle pitch, the needle pitch is reduced after the connecting joint is pulled, the needle pitch adjusting screw is locked after the connecting joint is adjusted, the three-star crank drives a second three-star block and a three-star sleeve, the needle is matched to play indirect and one-way running functions, a third three-star and a blocking piece are installed on the other side of the three-star sleeve and fixed on the machine shell through the blocking piece to prevent the three-star sleeve from reversely rotating, the three-star sleeve is fixed on the cloth feeding main shaft through the three-star screw, second tight rings are installed on two sides of the second, the cloth feeding main shaft drives an upper synchronous gear arranged at the front end of the cloth feeding main shaft, then drives a universal shaft and an upper cloth feeding gear arranged on the presser foot frame to indirectly rotate, and the upper synchronous gear drives a lower synchronous gear, a lower cloth feeding shaft, a lower cloth feeding wheel arranged at the front end of the lower cloth feeding shaft and the upper cloth feeding gear to indirectly rotate synchronously, so that a synchronous feeding effect is achieved.

Preferably, the motor cloth feeding mechanism comprises a take-up lever, a fixed sliding block, a needle rod, an upper shaft bevel gear, a vertical shaft upper bevel gear, a vertical shaft lower bevel gear, a lower shaft, a shuttle bed arranged at the front end of the lower shaft, and a servo stepping motor driven cloth feeding main shaft, wherein the cloth feeding main shaft is provided with a driving gear and a universal shaft at the front end, the cloth feeding main shaft drives the universal shaft arranged at the front end to drive the short shaft arranged on the tug boat frame and the upper cloth feeding gear arranged on the short shaft to indirectly operate, so as to achieve an upper cloth feeding effect, the driving gear arranged at the front end of the cloth feeding main shaft drives a lower driven gear to drive the lower long cloth feeding shaft, and the lower cloth feeding gear and the upper cloth feeding gear arranged at the front end of the lower cloth feeding shaft to synchronously feed cloth, and parallelly, and the motor cloth.

Preferably, the presser foot mechanism comprises a presser foot cylinder, a presser foot rod and a presser foot rod upper sleeve arranged at the front end of the casing, the presser foot rod is fixed in the same straight line through the presser foot rod upper sleeve and the presser foot rod lower sleeve, a presser foot rod positioning groove is arranged in the casing, a presser foot rod positioning block is arranged in the middle of the presser foot rod, the presser foot rod keeps the presser foot rod not swinging left and right when the presser foot cylinder pulls to move up and down, the presser foot cylinder and the presser foot rod are connected through a screw thread, an upper cloth feeding gear carrier, a presser foot frame, a presser foot and an upper cloth feeding gear are arranged at the lower end of the presser foot rod, when the machine lays cloth, the presser foot cylinder pulls the presser foot rod together with a dragging gear carrier, the presser foot frame, the presser foot and the upper cloth feeding gear which are arranged at the lower part of the presser foot rod, the presser foot frame, the presser foot and the upper cloth feeding gear lay down the cloth together to realize that the electric controller controls the, the function of automatically lifting the presser foot and pressing cloth is realized.

Preferably, the oil supply mechanism includes an oil basin, the oil basin is arranged at the lower end of the machine and stores oil for the machine, the vertical shaft and an oil pump arranged at the lower end of the vertical shaft supply oil to the upper shaft middle sleeve, and then supply oil to the front sleeve, the thread take-up lever, the needle rod, the presser foot lever, the positioning slider, the upper shaft bevel gear, the upper shaft upper bevel gear, the vertical shaft upper and lower fixing sleeves, the vertical shaft lower bevel gear, the lower shaft rear sleeve, the lower shaft middle sleeve and the lower shaft front sleeve through the upper shaft, the oil pump is provided with an oil supply pipe and an oil return pipe, the oil pump supplies oil to the upper shaft middle sleeve, the front sleeve, the thread take-up lever, the needle rod and the presser foot lever, redundant oil is sucked back into the oil basin through the oil return pipe by the oil return function of the oil pump, the omnibearing oil supply at.

Preferably, the control mechanism comprises an electric control program, a servo drive motor, a thread cutting mechanism, a thread pulling mechanism, a thread releasing mechanism and a thread pulling mechanism, the operation of the servo drive motor is controlled by an electric control program and a foot switch to drive the machine to operate, the speed of the operation of the servo drive motor and the height of a needle when the machine is stopped are adjusted by the electric control program, the workpiece is convenient to put in and take out, the thread cutting mechanism controls the electromagnetic valve through an electric control program and a foot switch, controls the thread cutting cylinder, the cylinder connecting piece, the pull rod and the scissors, realizes thread cutting at a specified time, the thread pulling mechanism controls the thread cutting cylinder and the cylinder connecting piece through an electromagnetic valve through an electric control program, so that the needle thread is lengthened before thread cutting, thread falling is prevented, the time of the thread cutting mechanism is matched, the thread releasing mechanism controls the electromagnetic valve to drive the air cylinder and the air cylinder connecting piece through an electric control program, and the thread releasing mechanism is matched with the thread cutter to cut a thread.

Preferably, the presser foot lifting mechanism is controlled in a mode of back stepping through a pedal switch, signals are transmitted to an electric control program, and the electric control program controls the electromagnetic valve, the cylinder presser foot frame and the presser foot to lift and put down the cloth presser.

Preferably, the reel opening and closing mechanism transmits a pedal-reversing signal to an electric control program through a pedal switch, and the electric control program controls the electromagnetic valve to drive the air cylinder to open and close the reel, so that the sewn workpiece can be taken out conveniently.

Compared with the prior art, the invention has the beneficial effects that: the first cloth feeding mechanism is mechanical cloth feeding, sewing needle pitch work is completed, the working procedures of wire pulling, wire cutting, wire shifting and presser foot lifting are completed through an electric control procedure, an electromagnetic valve and an air cylinder, the wire cutting mechanism automatically completes wire cutting work, and labor intensity of operators is reduced; the second cloth feeding mechanism is a motor cloth feeding mechanism, the motor cloth feeding mechanism is characterized in that a servo stepping motor is arranged on the right side of a machine shell to drive a cloth feeding main shaft, a driving gear and a universal shaft are arranged at the front end of the cloth feeding main shaft, the universal shaft arranged at the front end of the cloth feeding main shaft drives a short shaft arranged on a tugboat frame and an upper cloth feeding wheel arranged on the short shaft to indirectly run, so that an upper cloth feeding effect is achieved, the driving gear arranged at the front end of the cloth feeding main shaft drives a lower driven gear, then a lower long cloth feeding shaft and a lower cloth feeding gear arranged at the front end of the lower cloth feeding shaft are driven, and the upper cloth feeding teeth synchronously run in parallel, the gear needs to be replaced when the stitch pitch of a front windlass foot machine is adjusted, the motor cloth feeding is realized by a computer, the front cloth feeding is sewn, and the stitch pitch is encrypted so as to prevent the trouble of scattered threads.

The control mechanism comprises a motor operation, a thread cutting mechanism, a thread pulling mechanism, a thread loosening mechanism and a thread shifting mechanism, wherein the motor operation is controlled through an electric control program, a foot switch is used for controlling a servo direct-drive energy-saving motor to drive the machine to operate, the electric control program is used for adjusting the operation speed of the motor to be high or low and the height of a needle when the machine is stopped, so that a workpiece can be conveniently placed in and taken out of a sewn workpiece, the thread cutting mechanism is used for cutting threads at a specified time through the electric control program, the foot switch and a control electromagnetic valve are used for commanding an air cylinder, an air cylinder connecting piece, a pull rod and scissors, the thread pulling mechanism is used for commanding the air cylinder and the air cylinder connecting piece through the electric control program, so that the needle threads are elongated before thread cutting is prevented from being matched with the thread cutting mechanism, the thread loosening mechanism is used for commanding the air cylinder and the air cylinder.

This a rumble foot machine for sewing bottom of a trouser leg through automatically controlled procedure, control solenoid valve, rethread cylinder plays and accomplishes the stay cord, cuts the line, dials the line, lifts the working procedure of presser foot, and the thread trimming mechanism accomplishes the thread trimming work automatically, has reduced operator intensity of labour.

Drawings

FIG. 1 is a mechanical samsung cloth feed assembly drawing of the present invention;

FIG. 2 is a general assembly diagram of the cloth feeding of the motor of the present invention:

FIG. 3 is a view showing the construction of the upper shaft, thread take-up lever and needle bar of the present invention;

fig. 4 is a diagram of a samsung cloth feeding mechanism of the present invention:

FIG. 5 is a diagram of the motor feed mechanism of the present invention;

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

FIG. 7 is a structural view of a vertical shaft and lower shaft transmission mechanism of the present invention;

FIG. 8 is an exploded view of the oil supply mechanism of the present invention;

FIG. 9 is an exploded view of the presser foot mechanism of the present invention;

FIG. 10 is an exploded view of the structure of the electronic control mechanism of the present invention;

fig. 11 is an exploded view of the thread trimming mechanism of the present invention.

In the figure: the automatic winding device comprises a thread take-up lever 1, a needle bar crank 2, a front sleeve 3, an upper shaft 4, an upper shaft middle sleeve 5, a winding crank 6, a winding device 7, a first tight ring 8, a first crank 9, a first bearing 10, a connecting rod 11, a catch 12, an upper shaft gear 13, an oil seal 14, a second bearing 15, a first three-jaw 16, a first three-jaw 17, a servo direct-drive motor 18, a hand wheel 19, an upper bevel gear on a vertical shaft 20, a vertical shaft 21, an upper sleeve on a vertical shaft 22, a lower sleeve on a vertical shaft 23 and a lower bevel gear on a vertical shaft 24. 25 oil pump, 26 lower shaft bevel gear, 27 lower shaft rear sleeve, 28 lower shaft rear tight ring, 29 lower shaft middle sleeve, 30 lower shaft front sleeve, 31 lower shaft, 32 lower shaft front tight ring, 33 shuttle bed, 34 distance adjusting screw, 35 first three-star block, 36 first nut, 38 second nut, 39 fixing screw, 40 three-star shaft, 41 second tight ring, 42 three-star shaft front sleeve, 43 upper driving wheel, 44 universal shaft, 45 upper cloth feeding gear shaft, 46 dragging wheel frame, 47 upper cloth feeding gear, 48 presser foot, 49 presser foot rod, 50 presser foot rod chuck, 51 presser foot rod upper sleeve, 52 presser foot cylinder, 53 needle rod lower sleeve, 54 needle rod, 55 lower driving wheel, 56 lower driving gear shaft, 57 clamping plate, 58 lower driving shaft outer sleeve, 59 lower driving gear, 60 thread shearing cylinder, 61 cylinder slide block, 62 needle plate, 63 three-star shaft rear sleeve, 64 motor seat, 65 fixing ring, 66 third claw, 67 third claw, 68 servo motor fourth claw, 68, 69 needle bar upper sleeve, 70 presser bar lower sleeve, 71 electric controller, 72 switch, 73 foot controller, 74 panel, 75 solenoid valve, 76 filter, 77 pressure regulating valve, 78 thread pulling cylinder, 79 thread shearing cylinder, 80 cylinder, 81 thread clamping cylinder, 85 chute, 87 pin, 88 screw, 89 first screw, 90 second screw, 91 hinge pin, 92 first screw, 93 third bearing, 94 bow, 95 screw pin, 96 tug iron wire, 97 second screw, 98 third nut, 99 first spring, 100 oil basin, 101 third screw, 102 fourth screw, 103 second crank, 104 second three star block, 105 bead, 106 second spring, 107 three star screw, 108 three star shell, 109 third star block, 110, 111 third spring, 112 catch, 113 pulling barrel, 114 slide block, 116 screw, 117 air nozzle, 118 small air nozzle, 119 pull rod, 121, 120 moving knife, 121 ring, 122 moving knife, 123 first fixed knife, 124 shrapnel, 125 eyes, 126 third screw, 127 bed iron and 128 second fixed knife.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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. 1-11, the present invention provides a technical solution: a foot-reeling machine with two cloth-feeding mechanisms for sewing trouser legs comprises a machine shell, a control mechanism, a thread-cutting accessory mechanism, an oil supply mechanism, a transmission mechanism, a three-star transmission mechanism, a thread-cutting mechanism, a thread-drawing mechanism, a presser foot mechanism, a cylinder-drawing mechanism, a pneumatic element mechanism, a fixing mechanism and a reel opening and closing mechanism, wherein the transmission mechanism drives a winding crank 6 arranged in the middle of an upper shaft 4 through a servo direct drive motor 18 and the upper shaft 4 arranged at a front end connector of the motor, then drives a winder 7 arranged on the machine shell to move around a bottom thread, then drives a needle rod crank 2 arranged at the front end of the upper shaft 4 through the upper shaft 4, then drives a thread-taking-up rod 1 to move, pulls a needle rod 54 to be matched with a shuttle bed 33 in an up-and-down motion manner with a machine needle arranged on the needle rod 54, and drives an upper bevel gear 20 arranged, then the lower bevel gear 24 of the vertical shaft installed at the lower end of the vertical shaft 21 is driven to move to drive the bevel gear 26 installed at the rear end of the lower shaft 21 to rotate, the lower shaft 31 and the shuttle 33 installed at the front end of the lower shaft 31 are driven to rotate to be matched with the machine needle, the eccentric crank 9 installed on the upper shaft 4 and the bearing drive the connecting rod 11 to pull the three-star crank 35, a needle pitch adjusting groove is arranged at the joint of the three-star crank 35 and the connecting rod 11, only the needle pitch adjusting screw 34 is loosened to push the connecting position forward to increase the needle pitch, the needle pitch is reduced after pulling, the needle pitch adjusting screw 34 is locked after adjustment, the three-star crank 35 drives the second three-star block 104 and the three-star sleeve 108 to achieve the functions of indirect operation and unidirectional operation by matching with the machine needle, the third three-star 109 and the blocking sheet 112 are installed at the other side of the three-star sleeve 108, the blocking sheet 112 is fixed on the machine shell to prevent the three-star sleeve 108 from reversing, the, the two sides of the second three-star block 104 are provided with a second tightening ring 41, the three-star sleeve 108 and the cloth feeding main shaft 40 indirectly rotate at a designated position, the cloth feeding main shaft 40 drives an upper synchronizing gear 43 arranged at the front end of the cloth feeding main shaft 40, and then drives a universal shaft 44 and an upper cloth feeding gear 47 arranged on a foot pressing frame 46 to indirectly rotate, and the upper synchronizing gear 43 drives a lower synchronizing gear 55, a lower cloth feeding shaft 56, a lower cloth feeding wheel 55 arranged at the front end of the lower cloth feeding shaft 56 and the upper cloth feeding gear 43 to indirectly rotate synchronously, so that a synchronous feeding effect is achieved.

In the specific implementation, the motor cloth feeding mechanism comprises a take-up lever 1, a fixed sliding block 115, a needle rod 54, an upper shaft bevel gear 13, a vertical shaft upper bevel gear 20 and a vertical shaft 21, the vertical shaft lower bevel gear 24, the lower shaft bevel gear 26, the lower shaft 31, the shuttle bed 33 arranged at the front end of the lower shaft, and the servo stepping motor 68 drive the cloth feeding main shaft 40, the driving gear 43 and the universal shaft 44 arranged at the front end of the cloth feeding main shaft 40, the cloth feeding main shaft 40 drives the universal shaft 44 arranged at the front end to drive the short shaft 45 arranged on the tug boat frame and the upper cloth feeding gear 47 arranged on the short shaft to indirectly run, so as to achieve the upper cloth feeding effect, the driving gear 43 arranged at the front end of the cloth feeding main shaft 40 drives the lower driven gear 55 to drive the lower long cloth feeding shaft 56, the lower cloth feeding gear 59 arranged at the front end of the lower cloth feeding shaft 56 and the upper cloth feeding gear 47 to synchronously feed cloth in parallel, and the motor cloth feeding 68 is realized on the panel 74 of the electric controller 71.

In the concrete implementation, the presser foot mechanism comprises a presser foot cylinder 52, a presser foot rod 49 and a presser foot rod upper sleeve 51 arranged at the front end of the machine shell, the presser foot rod 49 is fixed in the same straight line through the presser foot rod upper sleeve 51 and the presser foot rod lower sleeve 70, a presser foot rod positioning groove is arranged in the machine shell, a presser foot rod positioning block 50 is arranged in the middle of the presser foot rod, the presser foot rod 49 keeps the presser foot rod 49 not swinging left and right when the presser foot cylinder 52 pulls up and down, the presser foot cylinder 52 and the presser foot rod 49 are connected through screw teeth, an upper cloth feeding gear carrier 46, a presser foot frame 94, a presser foot 48 and an upper cloth feeding gear 47 are arranged at the lower end of the presser foot rod 49, when the machine lays cloth, the presser foot cylinder 52 pulls up the presser foot rod 49, a dragging gear carrier 46, the presser foot frame 49, the presser foot frame 48 and the upper cloth feeding gear 47 which are arranged at the lower part of the presser foot rod 49, after the cloth is laid, the presser foot frame, the electric controller 71 controls the electromagnetic valve 75 to control the air pressure of the presser foot air cylinder 52, and the functions of automatically lifting the presser foot and pressing cloth are realized.

In the specific implementation, the oil supply mechanism comprises an oil basin 100, the oil basin 100 is arranged at the lower end of the machine and is used for storing oil for the machine, the vertical shaft 12 and an oil pump 14 arranged at the lower end of the vertical shaft 12 supply the oil to the upper shaft middle sleeve 5, and then the oil is supplied to the front sleeve 3, the thread take-up lever 1, the needle rod 54, the presser foot rod 49, the positioning slide block 50, the upper shaft bevel gear 13, the vertical shaft upper bevel gear 20 and the vertical shaft upper and lower fixing sleeve through the upper shaft 4, the vertical shaft lower bevel gear 20, the lower shaft bevel gear 26, the lower shaft rear sleeve 27, the lower shaft middle sleeve 29 and the lower shaft front sleeve 30, the oil pump 25 is provided with an oil supply pipe and an oil return pipe, the oil pump 25 supplies oil to the upper shaft middle sleeve 5, the front sleeve 3, the thread take-up lever 1, the needle rod 54 and the presser foot rod 49, redundant oil is sucked back into the oil basin 100 through the oil return pipe by the oil return function of the oil pump 25, the all-dimensional oil supply of the movable position is achieved, the high-speed operation is achieved, accessories are not easy to damage, the abrasion of machine parts is reduced, and the service life of the.

In the specific implementation, the control mechanism comprises an electric control program 71, a servo drive motor 18, a thread cutting mechanism, a thread pulling mechanism, a thread loosening mechanism and a thread pulling mechanism, the servo drive motor 18 operates under the control of the electric control program 71 and a foot switch 73 to drive the machine to operate, the electric control program 71 adjusts the operating speed of the servo drive motor 18 and the needle height when the machine is stopped so as to be convenient for putting in a workpiece and taking out a sewed workpiece, the thread cutting mechanism controls an electromagnetic valve 75 through the electric control program 71 and the foot switch 73 to control a thread cutting cylinder 60, a cylinder connecting piece, a pull rod and scissors to cut threads at a specified time, the thread pulling mechanism controls the thread cutting cylinder 60 and an air cylinder connecting piece through the electromagnetic valve 75 through the electric control program 71 to elongate the needle threads before thread cutting and prevent thread release, the thread loosening mechanism controls the electromagnetic valve 75 to drive the air cylinder and the air cylinder connecting piece through the electric control program 71 in cooperation with the time of the thread cutting mechanism, the wire is cut by matching with a wire cutter.

In specific implementation, the control mode of the presser foot lifting mechanism is that the pedal switch 73 is used for stepping backwards, a signal is transmitted to the electric control program 71, and the electric control program 71 controls the electromagnetic valve 75, the air cylinder presser foot frame 46 and the presser foot 48 to lift and lower the cloth presser.

In specific implementation, the reel opening and closing mechanism transmits a back treading signal to the electric control program 71 through the foot pedal switch 73, and the electric control program 71 controls the electromagnetic valve 75 to drive the air cylinder 82 to open and close the reel, so that the sewn workpiece can be taken out conveniently.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

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 rumble foot machine that is used for sewing bottom of a trouser leg to have two kinds of work feed mechanisms, includes shell portion, control mechanism, trimming accessory mechanism, oil feed mechanism, drive mechanism, samsung drive mechanism, trimming mechanism, guy wire mechanism, presser foot mechanism, trombone slide mechanism, pneumatic element mechanism, fixed establishment, reel mechanism that opens and shuts, its characterized in that: the transmission mechanism drives a winding crank (6) arranged in the middle of the upper shaft (4) through a servo direct drive motor (18) and an upper shaft (4) arranged at a front end connector of the motor, then drives a winder (7) arranged on a machine shell to move around a bottom line, then drives a needle rod crank (2) arranged at the front end of the upper shaft (4) through the upper shaft (4), then drives a thread take-up rod (1) to move, pulls a needle rod (54) to be matched with a shuttle bed (33) to move up and down with a machine needle arranged on the needle rod (54), drives an upper bevel gear (20) arranged at the upper end of the vertical shaft (21) to move through an upper shaft bevel gear (13) arranged on the upper shaft (4), then drives a vertical shaft lower bevel gear (24) arranged at the lower end of the vertical shaft (21) to move, drives a bevel gear (26) arranged at the rear end of the lower shaft (21) to rotate, and then drives the lower shaft (31) to be matched with the shuttle bed, the eccentric crank (9) and the bearing which are arranged on the upper shaft (4) drive the connecting rod (11) to pull the three-star crank (35), a needle pitch adjusting groove is formed in the joint of the three-star crank (35) and the connecting rod (11), the needle pitch adjusting screw (34) is loosened to push the connecting joint to be forward and increase the needle pitch, the needle pitch is reduced after pulling, the needle pitch adjusting screw (34) is locked after adjusting, the three-star crank (35) drives the second three-star block (104) and the three-star sleeve (108) to play a role in indirection and one-way operation in cooperation with a machine needle, the third three-star (109) and the blocking piece (112) are arranged on the other side of the three-star sleeve (108), the third three-star block (108) is fixed on the machine shell through the blocking piece (112) to prevent the three-star sleeve (108) from reversing, the three-star sleeve (108) is fixed on the cloth feeding main shaft (40) through the three-star screw (107), and the second fastening rings (41, the three-star sleeve (108) and the cloth feeding main shaft (40) indirectly rotate at a designated position, the cloth feeding main shaft (40) drives an upper synchronizing gear (43) arranged at the front end of the cloth feeding main shaft (40) and then drives a universal shaft (44) and an upper cloth feeding gear (47) arranged on a foot pressing frame (46) to indirectly rotate, and the upper synchronizing gear (43) drives a lower synchronizing gear (55), a lower cloth feeding shaft (56), a lower cloth feeding wheel (55) arranged at the front end of the lower cloth feeding shaft (56) and the upper cloth feeding gear (43) to indirectly rotate synchronously, so that a synchronous feeding effect is achieved.

2. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the cloth feeding mechanism comprises a take-up lever (1), a fixed sliding block (115), a needle rod (54), an upper shaft bevel gear (13), a vertical shaft upper bevel gear (20), a vertical shaft (21), a vertical shaft lower bevel gear (24), a lower shaft bevel gear (26), a lower shaft (31), a shuttle bed (33) arranged at the front end of the lower shaft, and a servo stepping motor (68) for driving a cloth feeding main shaft (40), wherein a driving gear (43) and a universal shaft (44) are arranged at the front end of the cloth feeding main shaft (40), the cloth feeding main shaft (40) drives the universal shaft (44) arranged at the front end to drive a short shaft (45) arranged on a tug wheel frame and an upper cloth feeding gear (47) arranged on the short shaft to indirectly operate to achieve an upper cloth feeding effect, the driving gear (43) arranged at the front end of the cloth feeding main shaft (40) drives a lower driven gear (55) to drive a lower long cloth feeding shaft (56), a lower cloth feeding gear (59) arranged at the front end of the lower cloth feeding shaft (56) and an upper cloth feeding gear (47) to synchronously feed cloth feeding teeth in, the motor feed (68) is implemented on a panel (74) of an electrical controller (71).

3. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the presser foot mechanism comprises a presser foot cylinder (52), a presser foot rod (49) and a presser foot rod upper sleeve (51) arranged at the front end of the shell, the presser foot rod (49) is fixed in the same straight line through the presser foot rod upper sleeve (51) and the presser foot rod lower sleeve (70), a presser foot rod positioning groove is arranged in the shell, a presser foot rod positioning block (50) is arranged in the middle of the presser foot rod, the presser foot rod (49) keeps the presser foot rod (49) not to swing left and right when the presser foot cylinder (52) pulls to move up and down, the presser foot cylinder (52) and the presser foot rod (49) are connected through threads, an upper cloth feeding gear frame (46), a presser foot frame (94), a presser foot (48) and an upper cloth feeding gear (47) are arranged at the lower end of the presser foot rod (49), and a dragging gear frame (46) and a dragging gear (47) arranged at the lower part of the presser foot rod (49) are arranged by the presser foot cylinder (52) when the machine lays cloth, The presser foot frame (49), the presser foot (48) and the upper cloth feeding gear (47) are pulled up together, after cloth is put, the presser foot frame (49), the presser foot (48) and the upper cloth feeding gear (47) put down the cloth pressing together, the electric controller (71) controls the electromagnetic valve (75) to control the air pressure of the presser foot cylinder (52), and the functions of automatically lifting the presser foot and pressing the cloth are realized.

4. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the oil supply mechanism comprises an oil basin (100), the oil basin (100) is arranged at the lower end of the machine and is used for storing oil for the machine, the vertical shaft (12) and an oil pump (14) arranged at the lower end of the vertical shaft (12) supply the oil to the upper shaft middle sleeve (5) and then supply the oil to the front sleeve (3), the thread take-up rod (1), the needle rod (54), the presser foot rod (49), the positioning slide block (50), the upper shaft bevel gear (13), the upper shaft bevel gear (20), the upper and lower vertical shaft fixing sleeves, the lower shaft bevel gear (20), the lower shaft bevel gear (26), the lower shaft rear sleeve (27), the lower shaft middle sleeve (29) and the lower shaft front sleeve (30) through the upper shaft (25) and the oil return pipe, the oil pump (25) supplies the oil to the upper shaft middle sleeve (5), the front sleeve (3), the thread take-up rod (1), the needle rod (54) and the presser foot rod (49), and the redundant oil is sucked and returned to the oil basin (100) through the oil return pipe by the oil return function, the movable position can supply oil in all directions, high-speed operation is achieved, accessories are not easy to damage, abrasion of machine parts is reduced, and the service life of the machine parts is prolonged.

5. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the control mechanism comprises an electric control program (71), a servo drive motor (18), a thread cutting mechanism, a thread pulling mechanism, a thread loosening mechanism and a thread pulling mechanism, wherein the servo drive motor (18) is controlled by the electric control program (71) and a foot switch (73) to drive the machine to operate, the electric control program (71) is used for adjusting the operation speed of the servo drive motor (18) and the height of a needle when the machine is stopped, so that a workpiece can be conveniently placed in and the sewed workpiece can be conveniently taken out, the thread cutting mechanism controls an electromagnetic valve (75) through the electric control program (71) and the foot switch (73) to control a thread cutting cylinder (60), a cylinder connecting piece, a pull rod and scissors to achieve thread cutting at a specified time, the thread pulling mechanism controls the thread cutting cylinder (60) and the cylinder connecting piece through the electromagnetic valve (75) through the electric control program (71), so that the needle thread is elongated before thread cutting is achieved, thread falling off is prevented, and the time of the thread cutting mechanism is matched, the thread releasing mechanism controls an electromagnetic valve (75) to drive a cylinder and a cylinder connecting piece through an electric control program (71) and is matched with a thread cutter to finish thread cutting.

6. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the control mode of the presser foot lifting mechanism is characterized in that a pedal switch (73) is used for pedaling reversely, signals are transmitted to an electric control program (71), and the electric control program (71) controls an electromagnetic valve (75), a cylinder presser foot frame (46) and a presser foot (48) to lift and lower cloth pressing.

7. A rumble foot machine with two feed mechanisms for sewing the bottom of a trouser leg according to claim 1, characterized in that: the reel opening and closing mechanism transmits a back treading signal to an electric control program (71) through a foot pedal switch (73), the electric control program (71) controls an electromagnetic valve (75) to drive an air cylinder (82) to open and close a reel, and a sewn workpiece is conveniently taken out.