4501 results about "Sewing machine" patented technology

A method and device for regulating the transport of material in a sewing or embroidery machine (1) that uses information from a position or movement sensor (33) located underneath the throat plate (21). The controls for the sewing machine (1) calculate deviations of the actual feeding increments of the article to be sewn from the corresponding target values from the periodically read sensor signals. With this information, the feeding increments are regulated in such a way that the deviations are cancelled out by averaging.

A method for stitching thread onto the wall of a tubular medical implant (preferably a graft) employs a sewing machine with an elongate bobbin or a needle on an elongate element, depending on whether it is desired to sew from the outside-in or the inside-out. A motor rotates and translates the implant, which is mounted on a hollow drum, relative to the needle.

The invention discloses an automatic bag sewing machine which comprises a rack assembly, a conveying assembly, a suction cup feeding assembly and a pressing wheel assembly. The rack assembly is located at the feeding end of the conveying assembly, and woven bags to be sewn are placed on the rack assembly. The suction cup feeding assembly is installed above the conveying assembly and the rack assembly and can reciprocate above the conveying assembly and the rack assembly so that the woven bags to be sewn can be moved from the rack assembly onto the conveying assembly. The pressing wheel assembly is installed on the conveying assembly so that the woven bags moving on the conveying assembly can be tightly attached to the conveying assembly to be flattened. A hemmer and a sewing machine body are installed on at least one side of the conveying assembly. The automatic bag sewing machine has the advantages of being simple and compact in structure, high in automation degree, good in consistency of sewn products, capable of reducing the labor cost and the like.

The invention discloses a pneumatic full-automatic pocket patching machine. The machine comprises a rack steel plate, a pneumatic automatic non-ironing and folding mechanism and the like, wherein the pneumatic automatic non-ironing and folding mechanism is arranged above the rear part of the rack steel plate; a pneumatic automatic feeding mechanism is transversely arranged in front of the pneumatic automatic non-ironing and folding mechanism; a coordinate pattern transmission mechanism is arranged on the left of the pneumatic automatic non-ironing and folding mechanism; a rotating shuttle type pattern sewing machine sewing head is arranged in front of the rack steel plate on the right and is transversely arranged; an air pressure adjusting mounting plate is arranged at the left rear end of the rack steel plate; solenoid valve mounting plates are arranged on the right of the air pressure adjusting mounting plate; a shield is arranged on the rear half part of the whole rack steel plate; stainless steel coamings are arranged below a stainless steel working table; a first starting switch and a second starting switch are arranged above one stainless steel coaming; a dust collector is arranged on the left of a rack; and an electrical appliance control box is arranged behind the rack and on the lower part of the rack steel plate. The machine has the effects of lowering the manufacturing cost and realizing automatic programs such as non-ironing programs and the like.

Individual motors in a sewing machine of the invention are provided, for each of a plurality of machine heads, for individually driving respective mechanical components, such as a needle bar driving mechanism, thread take-up lever and presser foot mechanism. A plurality of rotary hooks are driven by a common motor. Even in a case where embroidering workpieces set on the individual machine heads differ in material between the heads and upper threads used for the machine heads differ in characteristic between the heads, the sewing machine can make, in a concurrent, parallel fashion, embroidery products of different texture suited for the respective materials, characteristics, etc., by setting independent stitch formation per machine head.

The invention relates to a 3D composite material prefabrication piece robot sewing system, which comprises a robot, a single-face sewing machine, a structured light vision sensor and an image processing unit; the single-face sewing machine is connected with a shell of the structure light vision sensor and fixed at the tail end of an arm of the robot; the structured light vision sensor comprises a laser and a CCD video camera which are respectively fixed inside an shell of the structured light vision sensor, the included angle of a light axis centerline of the CCD video camera and a laser structure light surface of the laser is 30 to 60 degrees, which is perpendicular with the work-piece surface of a sewing material; the image processing unit comprises an image acquisition card, a PC machine and an image processing program library, the image processing program library comprises a sewing material type identification module, an image pre-processing module, an image post-processing module and a control capacity output module; the CCD video camera is connected with the image acquisition card through an video data line, the image acquisition card is arranged inside a main board slot of the PC machine, the PC machine is connected with the robot through a serial port.

The invention discloses a label sewing fully automatic socks packaging machine. The label sewing fully automatic socks packaging machine comprises a vibrating disk bracket, wherein the vibrating disk bracket is provided with a vibrating disk; a spiral material passage is arranged on the outer side of the vibrating disk; the lower end of the spiral material passage is connected with a hook mounting component; a socks feeding component is arranged in front of the hook mounting component; a vertical paper card bin component is arranged between the hook mounting component and the socks feeding component; a label sewing machine is arranged behind the socks feeding component; the hook mounting component and the socks feeding component are arranged on a same longitudinally arranged linear guide rail. The label sewing fully automatic socks packaging machine has the advantages that (1) the vibrating disk is arranged, so that automatic hook feeding can be realized, (2) the hook mounting component is arranged, so that automatic hook mounting can be realized, (3) the paper card bin component is arranged, so that automatic paper card feeding can be realized, (4) the socks feeding component is arranged, so that automatic socks feeding can be realized, and (5) the label sewing machine is arranged, so that automatic sewing can be realized.

The invention provides a feeding mechanism downward movement structure controlled by a presser foot lifting mechanism and a sewing machine. The feeding mechanism downward movement structure includes a presser foot lifting wrench, an eccentric shaft rotatably installed in a machine housing, a dental articulator having a second swinging supporting point, and a feeding tooth installed at one end of the dental articulator; a sliding groove is formed in the dental articulator, the eccentric shaft has a shaft body part and a shaft eccentric part eccentrically arranged on the shaft body part, the presser foot lifting wrench is connected with the shaft body part of the eccentric shaft through a first transmission mechanism, and the shaft eccentric part of the eccentric shaft can be rotatably installed in the sliding groove of the dental articulator and cooperated with the sliding groove in a sliding mode; when a presser foot is lifted, the presser foot lifting wrench swings around a first swinging supporting point and swings around the second swinging supporting point through a first transmission mechanism and an eccentric shaft driven dental articulator, so that the end, provided with the feeding tooth, of the dental articulator moves downward to the upper surface of a needle plate, the effective height between the presser foot and the needle plate after the presser foot is lifted is ensured, and therefore a to-be-sewed material is easily delivered between the presser foot and the needle plate before sewing is started.

Pressurized gas for carrying looper thread by gas is generated by gas supply pump operated by changing over a sewing-machine motor, which drives stitch forming device, looper threading is performed through loopers by one-touch operation. Gas carrying threading device of sewing machine, comprising: looper thread introduction mechanism inserts looper thread guided to loopers; hollow looper thread guide extends from looper thread introduction mechanism to looper thread inlets and has looper thread guide outlets; gas supply pump for performing looper threading by carrying looper thread by gas from looper thread introduction area through hollow looper thread guide to looper thread loop-taker point outlets; clutch for transmitting power from sewing machine motor M to drive shaft which drives stitch forming device including loopers at time of stitch formation or to gas supply pump at time of looper threading.

The invention provides a device for detecting the amount of bottom thread of a sewing machine. The sewing machine comprises a bottom plate, a rotating shuttle and an electronic control module, wherein the rotating shuttle comprises a shuttle shell and a shuttle core; the shuttle core comprises a winding post and two flanges; at least one flange in the two flanges is provided with a first surface part and a second surface part on the outer surface; a light hole is formed on the outer wall of the shuttle shell; the first surface part or the second surface part is exposed outside from the light hole; the sewing machine also comprises a sensor fixed in the bottom plate; the sensor comprises a transmitter used for transmitting light, and a receiver used for receiving light; the receiver and the transmitter of the sensor just face to the first surface part or the second surface part exposed outside from the light hole, and the light reflection capabilities of the first surface part and the second surface part are different from each other; the sensor is connected with a signal processing module; the signal processing module is connected with the electronic control module. The device for detecting the amount of the bottom thread of the sewing machine is capable of timely detecting whether the bottom thread is used up or not in real time.

A system and method for assembling a prosthetic heart valve, including a procedure for tightly wrapping fabric around a heart valve support stent. The support stent typically includes alternating cusps and commissures that create a highly contoured undulating outflow edge. The system includes a mandrel for retaining tension without manual assistance in a tubular length of fabric wrapped over the support stent. The mandrel may include an inner clamping mechanism for holding the first end of the fabric tube, a pedestal tube on which the support stent rests and through which the fabric tube passes, and an outer clamping mechanism for holding the free end of the fabric tube. The inner and outer clamping mechanisms include discrete clamps spaced apart 120° from each other that pull the fabric only in the cusps of the support stent. The inner clamping mechanism, outer clamping mechanism, and pedestal are relatively axially movable. Once the fabric is retained over the support stent, the mandrel may be placed in a chuck of a sewing machine system for automatically forming the seam. A small shuttle with bobbin thread reciprocates within a channel inside of the support stent and cooperates with the sewing machine needle to form a lock-stitch in the fabric tube. The mechanization of the fabric covering procedure greatly enhances manufacturing throughput and reduces ergonomic strain on workers.

The invention provided a sewing machine, improved to automatically switch the sewing machine to the thickness of cloth. This sewing machine includes: a housing having a base plate; a top arm; and a strut for integrating the base plate with the top arm. A metallic presser presses a cloth piece near a stitch forming position. The metallic presser driven by a movable rod is capable of moving between the lift position for releasing the cloth piece and the pressing position for the cloth piece to be pressed. When the metallic presser moves between these positions, the distance of at least one movable rod part from a reference structure fixed to the housing stably changes. The position sensor detects the position of the metallic presser in the pressing position. A control system makes signal connection thereto. The system sets an adjustment variable for the sewing machine depending upon the output value of the position sensor. As a result, the obtained sewing machine automatically performs switching to the thickness of variable cloth piece.

A shaping pant is made of tailored inner and outer layers of elastic clot, which are sewn together by using sewing machines; the shaping pant includes a front, a bottom, and a rear; the rear has a single-layer gathering portion at a middle thereof, which is substantially in the shape of a heart, curving and symmetric about a central line of the shaping pant; the single-layer gathering portion is sewn in position at edges thereof; therefore, air will travel through the single-layer gathering portion easily, and the wearer's butt will be lifted and shaped, looking rounder.

The invention discloses a built-in type automatic pressure foot lifting mechanism of a sewing machine. The built-in type automatic pressure foot lifting mechanism comprises a housing, a linear driver, a back lever, a front lever and a pull rod, wherein the housing comprises an upright column part; a cavity is formed in the upright column part; the linear driver is fixedly mounted in the cavity and comprises a drag rod which is capable of linearly moving in a reciprocating manner; a back pin hole of the back lever is hinged with one end part of the drag rod, a first front pin hole of the back lever is rotationally connected onto the housing through a pin shaft, and the distance from the back pin hole to the first front pin hole is greater than the distance from a second front pin hole to the first front pin hole; the front lever comprises three pin holes, the first pin hole is rotationally connected onto the housing through a pin shaft, and the second pin hole is hinged with a pressure foot lifting plate; and the back end of the pull rod is hinged with the second front pin hole of the back lever, and the front end of the pull rod is hinged with the third pin hole of the front lever. According to the built-in type automatic pressure foot lifting mechanism, the linear driver is arranged in the housing, so the structure of the whole mechanism is more compact, the appearance of the mechanism is more attractive, and vibration and noise produced when the automatic pressure foot lifting device works are also reduced.

The invention provides a bird nest removing device for a sewing machine and a using method thereof. The bird nest removing device comprises a pull hook, a thread clamping plate, a machine needle and a presser foot plate, wherein the pull hook, the thread clamping plate, the machine needle and the presser foot plate are located below a machine head. The drag hook is connected with the machine head through a rotating shaft, the machine needle is provided with a needle eye allowing threads to penetrate through, the presser foot plate is located on a needle plate, the presser foot plate is provided with a thread passing groove corresponding to the machine needle, the thread passing groove extends in the moving direction of a sewing material, and a thread cutter is arranged at the bottom of the thread passing groove. According to the bird nest removing device for the sewing machine and the using method thereof, an arc swing hook thread clamping device is used for clamping machine needle thread residues after thread trimming, the enough stable thread quantity is provided for starting sewing through thread clamping and loosening time coordination of two thread clamp holders in the seam starting process next time, seam starting upper threads can be tightened quickly under the condition that bottom threads do not exist, the clamped thread residues are cut off at the position close to the sewing material needle hole, the remaining thread residues are short, and the problem of bird nest thread residues is solved thoroughly.

The invention provides sewing processing equipment, which comprises a sewing machine, a sewing material clamping and dragging mechanism, two parallel slide rails at the upper layer and two parallel slide rails at the lower layer. The sewing processing equipment has the advantages that the sewing of various stitches and various pattern layer patterns can be realized, the work efficiency is improved, in addition, the production cost is lower, the installation and the debugging are simple, and the repair and the maintenance of the sewing machine can be easily carried out.

A guide for making non-linear patterns using a long arm quilting machine is used to form a variety of different non-linear stitching patterns in a quilt or other workpiece. The mechanism includes a crossmember which locks adjustably between the fixed tracks of a conventional quilting machine bed or table, and an arm adjustably secured to the crossmember. The arm is slotted to provide both radial and linear adjustment relative to the crossmember. The guide attachment end of the arm provides for the selective attachment of any of a series of different templates thereto. The templates include guide slots or passages therein, with a guide pin or stylus engaging the template slots or passages. The stylus is in turn affixed to the sewing machine, causing the machine to form a stitching pattern according to the specific pattern of the selected template as the stylus travels in the selected slot or passage.

The ball for a ball game of the invention includes a fabric layer (1) having a spherical 12-hedron where twelve right pentagonal fabric pieces (2) are sewn together. The marginal edges of the fabric piece being folded by 90 degrees, and the marginal edges are sewn together with a sewing machine. The fabric layer is then reversed through cross-like slits (5a, 5b) formed in the fabric layer in a location opposite to a valve opening (5) (also formed in the fabric layer) in such a manner that the marginal edges are located on an inner side of the fabric layer. After the bladder is accommodated within the fabric layer through the closure hole (5), the hole (5) is closed by a patch. Onto a surface of the fabric layer, there is adhered the panels. Thereby, the ball for a ball game having no unevenness and soft feeling is attained.

The invention discloses numerical-control sewing processing equipment. The numerical-control sewing processing equipment comprises a sewing machine, a sewing-material clamping and towing mechanism, two parallel sliding rails at the upper layer, two parallel sliding rails at the lower layer and a numerical-control center. The numerical-control sewing processing equipment disclosed by the invention has the advantages that not only can the sewing of multi-layer sewing materials, multiple stitches and multiple layer patterns be realized, but also the working efficiency is improved; the production cost is lower, the installation and the debugging are simple, and the repair and the maintenance of the sewing machine are easy.

The invention discloses robustness numerical control sewing processing equipment, which comprises a sewing machine, a sewing material clamping and dragging mechanism, two parallel slide rails at an upper layer, two parallel slide rails at a lower layer and a numerical control center. The robustness numerical control sewing processing equipment has the advantages that the sewing of multilayer sewing materials, various stitches and various pattern layer patterns can be realized, the work efficiency is improved, in addition, the production cost is lower, the installation and the debugging are simple, and the repair and the maintenance of the sewing machine are easy.

A method of forming a strong seam by using a sewing machine, without backstitching. In the sewing machine, a first shuttle hook which rotates in the counterclockwise direction, a first needle, a second needle, and a second shuttle hook which rotates in the counterclockwise direction are arranged in turn in the feed direction. A material to be sewn is fed every time when the needles simultaneously and independently form stitches, so as to form two independent seams which overlap each other in a manner such that the knots of the seams overlap each other on each knotted point, where one of the seams consists of perfect stitches, and the other seam consists of hitch stitches.

A method and device for controlling sewing patterns of a sewing machine allows the user to edit the patterns or pattern strings saved in the database, and to mirror the patterns, or control the respective data of sewing. The sewing pattern can be easily and freely edited, and the information of all the sewing operations is clearly displayed on the display.

An improved quilting machine includes a table having a carriage for supporting a sewing machine on the table and translating the sewing machine in two axes, a quilting rack for supporting one or more layers of fabric in a substantially planer orientation relative to the sewing machine, and foldable legs. The quilting rack is suspended above the table on a rotatable vertical support, and is easily adjustable without tools for positioning the fabric in a convenient orientation for machine quilting, hand sewing, or access to the table. A lamp is attached through a flexible assembly to the carriage for directing illumination to the sewing machine. The lamp moves with the carriage so that illumination tracks the sewing machine. The quilting rack and legs are foldable and, combined with the rotatable vertical support, provide for convenient transportation and storage of the quilting machine.

The invention provides a cloth feeding mechanism for a template sewing machine, and belongs to the technical field of the sewing machine. According to the cloth feeding mechanism for the template sewing machine, the problems of high manufacture cost and narrow applicable range of the traditional cloth feeding mechanism for the template sewing machine are solved. The cloth feeding mechanism for the template sewing machine comprises a base, an X-direction driving motor, a Y-direction driving motor, a mounting seat and a sewing template used for fixing cloth, wherein the mounting seat is arranged on the base in a sliding mode; the sewing template is arranged on the mounting seat; an X-direction transmission mechanism capable of driving the mounting seat to move on the base is arranged between the X-direction driving motor and the mounting seat; a Y-direction transmission mechanism capable of driving the sewing template to move relative to the mounting seat is arranged between the Y-direction driving motor and the sewing template; under the driving of the Y-direction driving motor, the sewing template moves along the direction vertical to the movement direction of the mounting seat. The cloth feeding mechanism for the template sewing machine, which is disclosed by the invention, has the advantages of strong universality and low manufacture cost and can be used for sewing pieces of cloth of different sizes.

The invention provides a thread trimming and presser foot raising driving device of a sewing machine. The technical problems that thread trimming, thread loosening and presser foot raising are implemented by two existing thread trimming and presser foot raising driving devices, the cost is high, occupied space is large, noises are large, mounting time is long, and mounting is not facilitated are solved. The thread trimming and presser foot raising driving device of the sewing machine comprises a stepping motor, a shifting fork mechanism and a cam, wherein the shifting fork mechanism comprises a shifting rod, a fork rod, a sliding rod and at least two fixing rings; one end of the shifting rod and the cam are fixed on a spindle of the stepping motor; the other end of the shifting fork can extend in the fork rod and drives the fork rod to move; the fork rod is fixed on the sliding rod; the sliding rod is positioned in the two fixing rings and can slide in the fixing rings; and a movement trace of the cam and a free end of a presser foot raising connecting rod of the sewing machine are intersected. A lower thread trimming device and a thread slacking device are driven to perform thread trimming, thread clamping and thread slacking through the shifting fork mechanism, and presser foot raising is implemented through the cam.

The invention discloses an automatic package bag filling machine. The whole process including automatic package bag feeding, package bag taking, package bag opening, package bag receiving, package bag opening arranging, package bag supporting, filled package bag conveying, throwing labels to package bags, and conveying the package bags and the labels to a bag sewing machine for package bag sealing is mechanically achieved, automatic control is achieved, no worker is involved, and time and labor are saved. A sensing switch is arranged in the whole process, efficiency is high, the rejection rate is low, production cost is greatly reduced, and production requirements are met.

The invention provides a thin and thick material detection device, a sewing machine control system and a method. The thin and thick material detection device includes: a detection part arranged by rotation, the detection end of the detection part is placed above the sewing table, and the gap between the detection part and the sewing table is as follows: The thickness of the cloth to be sewn, when the thickness of the cloth to be sewn changes, the detection part is driven to rotate; the signal generating mechanism includes an inductor for sensing whether the detection part rotates and/or the magnitude of the rotation, and is connected to the sensor And it is a signal generator that sends out the variable generated by the sensor as different signals. The present invention avoids the phenomenon of jamming when sewing over-thickness and over-stemming and sewing at different rotational speeds with different thicknesses of fabrics, which can well solve the problem of poor sewing stitches in the state of continuous sewing of thin and thick fabrics and sewing of thick fabrics question.

The invention discloses complete equipment for tailoring. The complete equipment comprises a fabric storage cabinet, a fabric cutting machine, a sewing machine, a button sewing machine and an ironing machine, wherein the fabric storage cabinet comprises a cabinet body; the cabinet body is divided into left and right fabric accommodating cavities by virtue of a drying agent separator which is arranged at the center of the cabinet body, and the length of each fabric accommodating cavity is equal to the diameter of the fabric; the top end of the cabinet body is connected with a cover plate through a rotary hinge; a base is arranged at the bottom end of the cabinet body; and bottom ends of left and right side walls of the cabinet body are respectively connected with an upward lifting door through the rotary hinge. The fabric storage cabinet can be used for greatly reducing the time for searching fabrics, the dryness of the environment in the cabinet body is effectively maintained, and long-term fabric storage is facilitated.

The invention provides a sewing machine. The sewing machine comprises a main shaft, a material feeding mechanism, a presser foot lifting mechanism, a driving motor, a needle pitch adjusting power transmission mechanism and a presser foot lifting transmission mechanism, wherein the material feeding mechanism is provided with a material feeding swinging seat; the needle pitch adjusting power transmission mechanism enables power transmission to continuously exist between the driving motor and the material feeding swinging seat; a collision avoidance structure is arranged in the presser foot lifting transmission mechanism; a corner of an output shaft of the driving motor is provided with a needle pitch active adjusting area and a presser foot lifting area; when the output shaft of the drivingmotor operates within the needle pitch active adjusting area, the sewing machine is provided with effective needle pitch; the collision avoidance structure enables no power transmission to exist between the driving motor and a presser foot lifting mechanism; when the output shaft of the driving motor operates within the presser foot lifting area, the presser foot lifting transmission mechanism enables power transmission to exist between the driving motor and the presser foot lifting mechanism; and the absolute value of a needle pitch corresponding to an angle of the material feeding swinging seat is not larger than a maximum absolute value of the effective needle pitch. According to the sewing machine, timely response, suspended seam and very good needle pitch adjusting stability of the needle pitch adjusting mechanism are realized.

A method and apparatus for stitching a workpiece, such as a quilt, is disclosed. The method comprises displaying a predetermined pattern on a display and manipulating the predetermined pattern on the display. The display includes an indicator corresponding to a position of a sewing head relative to the workpiece. The method further includes moving a control handle operably connected to the sewing head to move the indicator relative to the pattern on the display and move the sewing head relative to the workpiece. Devices to practice the method include sewing machines having a sewing head moveable relative to a workpiece and a control handle operably connected to the sewing head to move the sewing head relative to the workpiece, wherein the display showing a pattern to be sewn is mounted relative to the control handle for movement with the control handle.