117 results about "Feed dogs" patented technology

The invention provides a sewing starting control method based on presser foot lifting feeding. The sewing starting control method comprises the following steps that an electric control unit, a presser foot rod, a presser foot and a presser foot lifting mechanism are arranged in a sewing machine; after the sewing material to be sewn is placed, the presser foot is put down, and the electric control unit receives a thick material sewing starting signal; before a feeding tooth sinks downwards into a needle plate during sewing of a first needle, an electric control unit controls a presser foot lifting driving source to act, the presser foot lifting driving source drives a presser foot rod and a presser foot to move upwards through a presser foot lifting transmission unit, the presser foot is lifted to the sewing target height, and the upwarp angle of the presser foot relative to the horizontal plane is reduced; at the moment, the presser foot is still pressed and attached to the sewing starting part of the to-be-sewn sewing material, and the horizontal component force of the pressure applied to the sewing starting part of the to-be-sewn sewing material by the presser foot is not larger than the maximum static friction force between the sewing starting part of the to-be-sewn sewing material and the sewing machine needle plate; in this way, after the feeding teeth sink downwards into the needle plate in the first stitch starting process, the undesirable phenomenon that the sewing starting part of the sewing material to be sewn is pushed away by the presser foot is avoided, and sewing starting material pushing is effectively avoided.

The present application provides a cloth feeding mechanism and a sewing machine for a sewing machine, specifically relating to the technical field of sewing machine manufacturing. The cloth feeding mechanism has a cloth feeding drive source and a lifter drive source. The cloth feeding drive source indirectly drives the tooth carrier of the cloth feeding mechanism. While the cloth feeding drive source indirectly drives the tooth carrier, the lifter drive source directly drives the same tooth carrier to generate a swinging motion. The tooth carrier and its cloth feeding teeth, under the combined action of the lifter drive source and the cloth feeding drive source, cause the cloth feeding teeth to perform a cloth feeding action. By using the cloth feeding drive source to indirectly drive the tooth carrier of the cloth feeding mechanism, and while the cloth feeding drive source indirectly drives the tooth carrier, the lifter drive source directly drives the same tooth carrier to generate a swinging motion, it is realized that the tooth carrier and its cloth feeding teeth, under the combined action of the lifter drive source and the cloth feeding drive source, cause the cloth feeding teeth to perform a cloth feeding action. The present application makes full use of the drive source of the sewing machine, effectively improves the utilization efficiency of the power of the sewing machine, greatly reduces the manufacturing cost of the sewing machine, and has high value for use and promotion.

The utility model provides a feeding mechanism of a sewing machine, and belongs to the technical field of sewing machines. The problem that an existing sewing machine is insufficient in universality is solved. The feeding mechanism of the sewing machine comprises a feed dog, a feeding shaft and a feed lifting shaft which can swing in a reciprocating mode are arranged at the bottom of a machine base, the feeding mechanism further comprises a feeding connecting rod and a vertically-arranged feed dog frame connecting rod, and a feeding boss located above the feeding connecting rod is arranged on the machine base in a protruding mode. A strip-shaped sliding groove formed in the length direction of the feed dog frame connecting rod is formed in the feed dog frame connecting rod, the feed dog frame connecting rod is connected with the machine base through a connecting piece arranged in the strip-shaped sliding groove in a penetrating mode, the feed dog is located in the feed boss and fixedly connected to the upper end of the feed dog frame connecting rod, and the middle of the feed connecting rod is hinged to the lower end of the feed dog frame connecting rod. The feeding shaft is connected with one end of the feeding connecting rod and can drive the feeding connecting rod to move front and back in the feeding direction, and the feed lifting tooth shaft is connected with the other end of the feeding connecting rod and can drive the feeding connecting rod to move up and down. The sewing machine has the advantage of being high in universality.

The utility model provides a sewing machine for cloth hemming. The sewing machine for cloth hemming comprises a sewing machine body, a hemming folder and an adjusting blocking piece. The hemming folder is correspondingly arranged on a table plate of the sewing machine, the discharging end of the hemming folder corresponds to a presser foot of the sewing machine, the adjusting blocking piece is arranged on the table plate of the sewing machine corresponding to a discharging port of the hemming folder, and the end, close to the presser foot of the sewing machine, of the adjusting blocking piece is located at the front end of a feeding tooth of the sewing machine. And the lower surface of the hemming cloth strip discharged from the folder can be propped against the lower surface of the hemming cloth strip, so that the forward resistance of the lower-layer cloth of the hemming cloth strip is increased. According to the utility model, the friction force of the lower-layer cloth is increased by adopting the contact between the adjusting separation blade and the lower surface of the cloth strip, so that the synchronism of the upper-layer cloth and the lower-layer cloth in the sewing process is ensured, the wrinkling or loosening phenomenon is greatly reduced, and the stability and the consistency of edge covering are improved.

The utility model discloses a sewing mechanism for sewing a zipper and cutting a base fabric. The sewing mechanism comprises a needle plate, wherein the needle plate is provided with a containing groove used for containing and guiding a zipper head to move transversely and two containing holes formed in the front side and the rear side of the containing groove; the upper end of the cloth feeding frame is provided with two cloth feeding blocks, the tops of the cloth feeding blocks are provided with cloth feeding teeth, and the two cloth feeding blocks correspondingly extend into the two containing holes; the first presser foot frame is provided with two inner presser feet, and the two inner presser feet are correspondingly arranged above the two cloth feeding blocks; two machine needles are mounted on the machine needle seat, and the two machine needles correspond to the first through holes in the two inner presser feet and the second through holes in the two cloth feeding blocks up and down correspondingly; the slotting cutter is arranged above the containing groove and connected with a driving assembly driving the slotting cutter to move up and down, and when the driving assembly drives the slotting cutter to move downwards, the slotting cutter can stretch into the containing groove. According to the technical scheme, the zipper head does not need to be taken down when the zipper and the base cloth are sewn, the sewing speed of the base cloth and the zipper is increased, and the processing efficiency is improved.

A controller of a sewing machine acquires sewing data for forming a utility pattern continuously in a first direction, acquires a condition for sewing a tapering pattern including a tapering portion, generates a projection image representing the tapering pattern based on the sewing data and the condition, controls a needle bar, a feed dog, and an actuator in accordance with the sewing data to sew the utility pattern continuously in the first direction, after starting sewing of the utility pattern, controls a projector to project the projection image at a planned sewing position of the tapering pattern in a planned sewing size, and performs a tapering pattern sewing operation of, after starting projection of the projection image, controlling the needle bar, the feed dog, and the actuator in accordance with the sewing data and the condition to sew the tapering pattern that is continuous with the utility pattern.

The utility model discloses a thread trimming device of a sewing machine and the sewing machine with the thread trimming device, which belong to the technical field of sewing machine accessories, and comprise a blade, a first-stage oscillating bar mechanism, a second-stage oscillating bar mechanism, a third-stage oscillating bar mechanism and a telescopic component which are arranged in a panel of the sewing machine and are connected in sequence, the first-stage oscillating bar mechanism, the second-stage oscillating bar mechanism, the third-stage oscillating bar mechanism and the telescopic component are all connected with the sewing machine panel; the blade is arranged on one side above a bobbin case in the sewing machine panel; the sewing machine comprises a machine head and a sewing machine panel, the thread trimming device is installed in the sewing machine panel, and the blade is arranged on the lower right portion of feed dogs at the end of the sewing machine panel. The telescopic component drives the first-stage swing rod mechanism, the second-stage swing rod mechanism and the third-stage swing rod mechanism to drive the blade to swing, a sewing thread between a machine needle and a bobbin case can be cut off after sewing is finished, the downtime is shortened, the working efficiency is improved, and the labor intensity of workers is reduced; and the original sewing machine can be reformed, so that the production cost is reduced.

The utility model relates to the technical field of lockstitch sewing machines, in particular to an adjustable upper differential lockstitch sewing machine. Comprising a rack, an upper cloth feeding mechanism is arranged in the rack, and the upper cloth feeding mechanism is driven by an upper shaft; the upper cloth feeding mechanism comprises a swing seat, a longitudinal moving assembly and a swing assembly. The swing assembly comprises a first cam, a second cam, a third cam and a fourth cam, the first cam connecting rod is connected with the first cam; one end of the first transmission connecting rod is connected with the first cam connecting rod, and the other end of the first transmission connecting rod sleeves the first transmission shaft; the first transmission part is arranged on the first transmission shaft in a sleeving manner; the swing rod is connected with the transmission part I, and the lower end of the swing rod is hinged to the swing seat; when the swing assembly drives the swing rod to rotate, the lower end of the swing rod can pull the swing base to move. The swing assembly and the longitudinal moving assembly are matched so that the swing base can execute the cloth feeding action. The rack is further provided with a first adjusting assembly, and the lifting height of the upper feed dog can be adjusted through the first adjusting assembly.

The utility model provides a kind of movement device of cylinder sewing machine feed dog, belong to sewing machine technical field.It solves the problem that existing feed dog movement device is not applicable to cylinder sewing machine.This sewing machine includes the cabinet with long arm, the first end of swing arm is fixed with feed dog, the middle part of swing arm is hinged with long arm, the first end of lifting tooth bar is hinged with long arm, the first end of lifting tooth bar is located directly below the first end of swing arm, lower shaft can drive swing arm swing back and forth around its hinged point by feeding assembly, lower shaft can drive lifting tooth bar swing up and down around its hinged point by lifting tooth assembly, the first end of lifting tooth bar swing upwards can make the first end of swing arm move upwards, swing arm can make the first end of swing arm move downwards under the action of its elasticity.This movement device of cylinder sewing machine feed dog has the advantages of reasonable use of space, smooth movement of cylinder sewing machine feed dog.

The invention provides a sewing machine feed dog adjusting device and a sewing machine, the sewing machine feed dog adjusting device comprises a bottom plate, a feed dog lifting shaft, a feed dog frame, a feed dog, a feed dog lifting crank, a feed dog lifting connecting rod, a feed dog lifting adjusting eccentric pin and a feed dog lifting adjusting knob, the feed dog lifting crank is fixed on the feed dog lifting shaft, and the feed dog lifting adjusting eccentric pin comprises a first shaft part and a second shaft part which are eccentrically arranged; the first shaft part is in running fit with the feed lifting crank and is fixed with the feed lifting adjusting knob, the second shaft part is in running fit with one end of the feed lifting connecting rod, and the other end of the feed lifting connecting rod is hinged with the feed rack; the feed lifting crank and the feed lifting adjusting knob are respectively provided with a plurality of adjusting positioning grooves and telescopic adjusting positioning pieces; when the feed lifting adjusting knob is rotated, the feed lifting adjusting eccentric pin synchronously rotates along with the feed lifting adjusting knob, the relative position between the second shaft part and the feed lifting connecting rod is changed, and the adjusting positioning piece moves out of the current adjusting positioning groove and is clamped into the other adjusting positioning groove. The height of the feeding teeth can be easily and conveniently adjusted by a lathe worker.

To appropriately set feed amount of a sub feed dog.SOLUTION: A differential feed sewing machine comprises: a feed mechanism 30 having a main feed dog 31 and a sub feed dog 32 that feed on a downstream side and an upstream side in a feed direction of a sewn object; a first feed adjusting mechanism 60 to adjust a sewing pitch of the main feed dog to an arbitrary size; and a second feed adjusting mechanism 80 to adjust a sewing pitch of the sub feed dog to an arbitrary size. The second feed adjusting mechanism adjusts the sewing pitch of the sub feed dog by an actuator 82 and has a setting input part 95 to set and input the sewing pitch of the sub feed dog and a control device 90 to control the actuator so that the sewing pitch becomes the sewing pitch of the sub feed dog input from the setting input part.SELECTED DRAWING: Figure 4

The present invention provides a seam start anti-pushing control method based on a downward feeding function. When the presser foot is raised, the feed dog is sunk under the needle plate by controlling the action of a feed dog lifting drive source, thereby realizing the downward feeding of the feed dog and facilitating subsequent material collection and discharge. Before discharge, the feed dog is moved to a set first preset position under the needle plate. After discharge, before the presser foot is lowered, the feed dog is moved upward, so that the feed dog emerges from the needle plate, and the feed dog has a holding effect on the seam start portion of the sewing material. When the presser foot is subsequently lowered, the presser foot is reliably prevented from pushing the seam start portion of the sewing material backward. Thereafter, before the feed dog sinks into the needle plate when starting the first stitch, the action of the feed dog lifting drive source and the feed drive source is controlled, so that the feed dog feeds the seam start portion of the sewing material forward by a distance L, so that the angle α between the presser foot and the horizontal plane at this time satisfies α=0°, or tanα≤μ. After the feed dog sinks under the needle plate for the first time, the sewing material will not be pushed backward by the presser foot.

The utility model discloses an automatic differential adjusting mechanism which comprises a stepping motor installed on the rear portion of a machine head of a sewing machine, a power output shaft of the stepping motor is connected with a swing rod, a U-shaped groove is formed in the lower end of the swing rod, and the U-shaped groove is movably matched with a driving bearing on a differential connecting rod. According to the automatic differential adjusting mechanism, the working position of the differential connecting rod can be controlled in real time through the stepping motor, the differential value of the feed dog can be automatically adjusted in the sewing process, and cloth has the most appropriate tension degree in the sewing process.

Sewing machine (100), including: a needle vertical movement mechanism which moves a needle bar up and down; a sewing machine motor (16) which drives the needle vertical movement mechanism as a drive source; a transporter holder (32) which holds a transporter (31) which transports a workpiece on a needle plate; a horizontal transport mechanism which receives a driving force from the sewing machine motor (16) and transmits a horizontal back-and-forth movement to the feed dog support (32); and a vertical transport mechanism which imparts a vertical back-and-forth movement to the transporter holder (32), wherein the horizontal transport mechanism includes a transport adjustment motor (57) which changes and adjusts the division of the horizontal reciprocating movement by the sewing machine motor (16) with respect to the feed dog support (32), the vertical transport mechanism comprises a vertical transport motor (66) which provides the vertical reciprocating movement with respect to the transporter support (32) as a drive source, the sewing machine (100) includes a control device (90) which controls the feed adjustment motor (57) and the vertical feed motor (66) in order to cause the feed dog (31) to transport the workpiece, the control device (90) controls the vertical transport motor (66) in such a way that the feed dog (31) performs a circular movement along a predetermined path in synchronization with a rotation angle of a main shaft which is rotatably driven by the sewing machine motor (16), and controls the vertical transport motor (66) in such a way that a path of the feed dog (31) in a transport section is corrected according to a rotation speed of the main shaft.

The utility model relates to the technical field of garment processing, and discloses a flat seaming machine for garment processing, which comprises a sewing table, a flat seaming machine body is movably mounted at the top of the sewing table, feeding teeth are arranged at the bottom of the inner wall of the flat seaming machine body, a cavity is reserved in the sewing table, the inner wall of the cavity is fixedly connected with a sealing frame, and the sealing frame is fixedly connected with the sewing table. A suction hole is formed in the top of the sewing table, and a suction pipe is fixedly connected to the top of the sewing table. The flat seaming machine has the following advantages and effects that when clothes are processed, cloth penetrates through the bottom of the dust removal box and then enters the flat seaming machine body, the feeding teeth convey the cloth and drive the cloth to move above the suction holes, batting at the bottom of the cloth is cleaned by the suction holes, the top of the cloth is rubbed by soft hair, the batting and the cloth are conveniently separated, and the cloth is prevented from falling off. Fluff at the top is cleaned by a second suction hole and falls on a guide groove to be collected, so that the fluff of the cloth can be effectively removed, and the fluff is prevented from influencing the normal use of the flat seaming machine body.

The application provides a feed dog assembly, a thread trimming mechanism and a presser foot lifting mechanism of a sewing machine, and particularly relates to the technical field of sewing machine manufacturing, and comprises a feed dog assembly, an up-down lifting power source and a front-rear feed power source, the feed dog assembly is jointly driven by the up-down lifting power source and the front-rear feed power source, the up-down lifting power source and the front-rear feed power source act on the feed dog assembly to perform a feed action of the sewing machine, the front-rear feed power source has a front output shaft to perform a thread trimming action of the thread trimming mechanism, and the front-rear feed power source has a rear output shaft to perform a presser foot lifting action of the presser foot lifting mechanism. The single power device can realize the thread trimming action and the presser foot lifting action under the control of an electric control system of the sewing machine, effectively improves the use efficiency of the power of the sewing machine, greatly reduces the manufacturing cost of the sewing machine, further improves the intelligent control level of the sewing machine, and has high use and promotion value.

The invention provides a method for controlling the uniform stitch length of a sewing machine. The method comprises the following steps that S1, a plurality of adjusting stitch length values and a plurality of adjusting motor output swing angles are preset in a controller; s2, in the process that the feed dog executes the nth cloth feeding action, recording the moment when the feed dog protrudes upwards from the needle plate and jacks up the sewing material as t1n, recording the moment when the feed dog is located at the highest point as t2n, recording the set moment between the t1n and t2n as t3n, and obtaining sewing material thickness values H1n and H3n respectively by a thickness detection mechanism at the t1n moment and the t3n moment; the controller obtains an adjusting needle pitch value Dn according to the H1n and the H3n and controls the output shaft of the adjusting motor to be at an output swing angle corresponding to the Dn, and n is a positive integer. The control method provided by the invention has the beneficial effects that by adopting the control method provided by the invention, the change condition of the thickness of the sewing material can be obtained in real time and the stitch length can be adjusted in time in the process of sewing each stitch by the sewing machine, so that the stitch length cannot be suddenly changed, and the uniformity of the stitch length on the sewing material is ensured.

The invention provides a sewing machine feed dog adjusting device and a sewing machine, the sewing machine feed dog adjusting device comprises a fixedly arranged base plate, a feed dog lifting shaft rotatably supported in the base plate, a feed dog frame, a feed dog fixed on the feed dog frame and a transmission adjusting assembly, and the transmission adjusting assembly is in transmission connection between the feed dog lifting shaft and the feed dog frame. The transmission adjusting assembly is provided with an adjusting execution part for a user to operate, a locking structure is further arranged between every two adjacent parts in the transmission adjusting assembly, and the locking structures are used for keeping the relative positions of the two adjacent parts; when a user operates the adjusting execution part, the height of the feeding teeth during follow-up operation of the sewing machine is changed, and the current relative positions of the two adjacent parts are changed, so that a turner can easily and conveniently adjust the height of the feeding teeth. The relative positions of the two adjacent parts are locked through the locking structures, so that the height of the feeding teeth is locked after each time of adjustment. The sewing machine is simple in overall structure and low in cost, the overall cost of the sewing machine is reduced, and competitiveness is improved.

The present application proposes a sewing machine without a swing seat, specifically relating to the technical field of sewing machine manufacturing. The sewing machine has a drive source, a cloth feed shaft, a cloth feed dog, a thread trimming mechanism, and a presser foot lifting mechanism. The sewing machine is characterized in that the sewing machine also has a cloth feed and stitch length adjustment mechanism. The front output shaft of the drive source is equipped with an outer rotating plate of the cloth feed and stitch length adjustment mechanism. The drive source drives the outer rotating plate in a rotary drive mode. The outer rotating plate is connected to the cloth feed shaft, and the cloth feed shaft is indirectly connected to the cloth feed dog. The sewing machine of the present application does not have a swing seat but has all the functions of a swing seat. Moreover, the stitch length adjustment mechanism has the function of adjusting multiple stitch lengths using a single drive source without having to replace parts such as the stitch length slot. This effectively improves the intelligent control level of the sewing machine and has a high value for use and promotion.

The utility model discloses a stitch length adjusting mechanism for a flat seaming machine, which belongs to the technical field of flat seaming machines, and comprises a feed dog assembly and a stitch length adjusting assembly, the feed dog assembly comprises feed dogs, an eccentric wheel, a main shaft, a synchronizing part, a driven gear and a feed dog motor, and the stitch length adjusting assembly comprises a stitch length adjusting motor, a driving gear and a driver. The stitch length adjusting motor and the feed dog motor are respectively provided with an output shaft, the driving gear is movably arranged on the output shaft of the stitch length adjusting motor, the driver is in driving connection with the driving gear, the driven gear is fixedly arranged on the output shaft of the feed dog motor, and the feed dog motor is arranged on the driven gear. The driving gear is movably meshed with the driven gear, the synchronizing part is connected with an output shaft of the feed dog motor and one end of the main shaft, the other end of the main shaft is connected with the eccentric wheel, the feed dog is arranged on the main shaft, and the eccentric wheel is connected with the feed dog.

This invention provides a feed mechanism for an overlock sewing machine that solves the problem of the significant amount of adjustment required to change the main feed momentum and differential feed momentum compared to conventional methods. [Solution] The overlock sewing machine's feed system comprises a fabric feed mechanism 3 equipped with a main feed dog 20, differential feed dog 21, main feed table 22, differential feed table 23, feed up / down mechanism 30, main feed forward / backward mechanism 4, and differential feed forward / backward mechanism 5; a feed amount adjustment mechanism 6 equipped with a main feed amount adjustment mechanism 7 including a first stepping motor 73 and a differential feed amount adjustment mechanism 8 including a second stepping motor 83; and control devices and input devices for the first stepping motor 73 and the second stepping motor 83.

The utility model provides a kind of sewing machine's feed dog adjusting device, including driving motor, transmission assembly and adjusting assembly, driving motor swings adjusting assembly by transmission assembly drive, adjusting assembly is used to adjust the angle size of differential feeding shaft positive, reverse swing;Adjusting assembly includes adjusting seat, transmission assembly includes slider and the sliding slot in the side of adjusting seat, slider is fixed on the output shaft of driving motor, adjusting shaft is parallel to the output shaft of driving motor and is arranged, slider is slidably arranged in sliding slot, driving motor drives slider rotation, slider drives adjusting seat swing.This sewing machine's feed dog adjusting device realizes feed dog automatic regulation by driving motor, transmission assembly so that it can be according to the size of space in casing reasonably arrange the installation position of driving motor, compact structure, suitable for sewing machine casing of space limited, wide application range, traditional stability.

The utility model provides a lower tug mechanism. The lower tug mechanism comprises a rocker arm, a roller seat, a lower roller, a base and a rotating shaft, wherein the upper end of the rocker arm is hinged with an upper swing arm; the roller seat is fixedly arranged in an opening part; the lower roller is exposed out of the bottom plate, a first synchronizing wheel is arranged at one end of the roller shaft, a second synchronizing wheel is arranged at the first end of the rotating shaft, and the first synchronizing wheel and the second synchronizing wheel are connected through a synchronizing part; the second end of the rotating shaft is sequentially sleeved with a first one-way bearing and a lower swing arm from inside to outside, a sliding groove is further formed in the lower swing arm, and the lower end of the rocker arm is hinged to the sliding groove. The utility model further provides a sewing machine which comprises the lower dragging wheel mechanism. The lower towing wheel mechanism has the advantages that driving force of the lower towing wheel mechanism comes from swinging of the tooth frame base, and the lower towing wheel mechanism and the feeding teeth can move synchronously. And when being matched with a rear towing wheel mechanism for use, the cloth feeding device has stronger cloth feeding power and mistake-proofing performance.

To provide a sewing device in which the degree of freedom in setting the length of a needle thread and a bobbin thread is improved more than before.SOLUTION: A control device of a sewing machine drives a needle bar mechanism and a feed dog, and executes sewing work for forming a seam on a workpiece with a thread (S7). The control device executes a yarn catching process of moving the movable blade from the standby position to a yarn catching position where the movable blade catches the yarn, and further moving the movable blade to a movable position on a side opposite to the standby position with respect to the yarn catching position. The control device executes length adjustment processing for positioning the lower end of the needle above the throat plate to make the workpiece movable in a state where the movable blade catches the thread by the thread catching processing (S11). After the length adjustment processing, the control device executes cut processing for moving the movable blade to a cut position where the movable blade crosses the fixed blade and cutting the thread (S14).SELECTED DRAWING: Figure 10

The utility model discloses an anti-bite clamp, which belongs to the technical field of dog training instruments and comprises a base plate, dog food can be placed in the base plate, a clamping component is arranged on the base plate, the clamping component can be folded or unfolded relative to the base plate, when the clamping component is folded, the clamping component clamps the dog food or a dog basin or blocks the dog food in the base plate, and when the clamping component is unfolded, the clamping component can clamp the dog food or the dog basin or blocks the dog food in the base plate. The clamping assembly cancels blocking of the dog food in the chassis, the chassis is connected with a connecting assembly, the connecting assembly is provided with a control assembly, and the clamping assembly is controlled to be folded or unfolded through the control assembly. The clamping assembly is used for clamping a dog basin and dog food to feed dogs, the clamping assembly can also be used for grabbing the dog food and holding the dog food in the base plate, when the clamping assembly is closed, the dog food is blocked, the dogs cannot eat food, and when the dogs need to eat food, the clamping assembly is opened, the dog food in the base plate is exposed, and the dogs can eat food. The feeding rhythm of the dog is controlled, and the mood of the dog is stabilized to train the dog.

The utility model discloses an automatic differential adjusting mechanism of an overedger, which comprises a stepping motor arranged at the rear part of a sewing machine head, a power output shaft of the stepping motor is connected with a transmission screw rod, the transmission screw rod is provided with a transmission block capable of horizontally moving, and the transmission block is movably matched with a driving bearing on a differential connecting rod. According to the automatic differential adjusting mechanism, the working position of the differential connecting rod can be controlled in real time through the stepping motor, the differential value of the feed dog can be automatically adjusted in the sewing process, and cloth has the most appropriate tension degree in the sewing process.

The oral liquid feeding device for the sea-buckthorn zinc dogs comprises a placing frame, a storage bottle used for storing oral liquid for the sea-buckthorn zinc dogs is placed in the placing frame, an installation cavity is formed in the placing frame, a water basin used for feeding the dogs is installed in the installation cavity, and the cavity wall of the installation cavity makes contact with the water basin to conduct vertical positioning and transverse positioning on the water basin. A bayonet is formed in the rear portion of the water basin, a cam is rotationally installed on the placing frame, the cam is transversely clamped into the bayonet to clamp the water basin so as to longitudinally position the water basin, the cam is exposed to be operated and rotated by people, and the rotating shaft is a longitudinal shaft. The cavity wall of the mounting cavity is used for vertically and transversely positioning the basin, and the cam is transversely clamped into the bayonet to clamp the basin so as to longitudinally position the basin, so that the basin can be effectively fixed. During feeding, the water basin is not easily pulled out and knocked over by dogs. When a user needs to move the water basin, the cam is operated to rotate to be separated out of the bayonet, so that the cam does not clamp the water basin any more, and extra resistance cannot be brought to the movement of the water basin.

The utility model relates to the technical field of garment processing equipment, and discloses a flatcar sewing machine for garment processing, which comprises a sewing table, a motor is fixedly connected inside a motor box, a belt is arranged outside a cabin, a hydraulic machine is fixedly connected inside the sewing table, and feed dogs are fixedly connected on the upper surface of a gum. The sewing machine has the following advantages and effects that a worker puts cloth on the upper surface of the cloth placing ring, then the motor is started, the rotating third rotating disc drives the semi-linkage shaft rod to move, the shuttle needle reciprocates up and down through the crank rod, the cloth is sewed, and when the cloth with different thicknesses is sewed, the sewing efficiency is greatly improved. At the moment, the hydraulic machine is started or stopped, the shuttle needle, the cloth and the feed dog are in a three-point one-line mode, then a worker presses the cloth to enable the cloth to move forwards, meanwhile, the shuttle needle sews the cloth, through the operation, the situation that the height of the feed dog is adjusted by manually turning a screw is avoided, and the good cloth sewing effect is achieved.

The utility model provides a kind of sewing machine's feed dog driving mechanism, including shell, motor and feeding assembly, motor is fixed on the side surface of shell, feeding assembly includes forked crank, synchronous connecting rod, feeding swing bar, feeding connecting rod, feed dog frame, feed dog, forked crank is fixed with the output shaft of motor, between the end portion of forked crank and feeding swing bar, it is connected by synchronous connecting rod, feeding swing bar is equipped with feeding swing bar shaft, the side surface of shell is equipped with two fixed lugs, the both ends of feeding swing bar shaft are respectively hinged on two fixed lugs, between the end portion of feeding swing bar and feed dog frame, it is connected by feeding connecting rod, feed dog is installed on feed dog frame.The feed dog driving mechanism of this sewing machine is driven to feed dog by motor and feeding assembly, motor directly drives and can be adjusted to the swing amplitude of feed dog by computer control motor operation, realize the combination and simplification of the driving structure and the adjusting structure of feed dog.