992results about "Pressers" patented technology

An automated system that can be used for prosthetic heart valve manufacturing or suturing procedures. The system can include a first automated fixture that includes an articulating arm and a target device holder. The system can also include one or more additional automated fixtures, which can be configured as one or more suturing arms that include another articulating arm and a needle holder. The first automated fixture can be configured to rotate a target device held by the holder to allow the one or more additional automated fixtures to perform operations such as form sutures on the target device without intervention of a human operator. The system can include a display system configured to display status information of a suturing procedure.

The efficient and stable pocket processing mechanism comprises a portal frame, the portal frame is installed above a working panel, a first driving device is arranged on the portal frame and extends in the left-right direction, and the first driving device is used for driving a translation frame to translate in the left-right direction; a portal frame is installed above a working panel of a pocket machine rack, a first driving device and a translation frame are installed on the portal frame, a material fixing mechanism and a bag folding mechanism are installed on the translation frame, and the bag folding mechanism is located above the material fixing mechanism. The first driving device can drive the translation frame, the material fixing mechanism and the bag folding mechanism to jointly translate left and right, the translation reliability of the material fixing mechanism and the bag folding mechanism can be greatly improved through the arrangement of the portal frame, and the bag folding mechanism is more stable in structure; and the edge of a machining opening can be folded, and the machining efficiency is higher.

A method for calibrating one or more optical sensors on a sewing machine, including collecting data of one or more features of one or more predefined regions associated with the sewing machine, processing the data through one or more neural networks, wherein the one or more neural networks detect and recognize the one or more features of the one or more predetermined regions from the data, calculating one or more accuracy indicators of the one or more features from the data as compared to one or more trained features from the one or more neural networks, comparing the value of the one or more accuracy indicators to one or more indicator thresholds and adjusting one or more parameters of one or more optical sensors based on the comparison between the one or more accuracy indicators and the one or more indicator thresholds.

The invention discloses a medium presser foot mechanism control method and a medium presser foot mechanism, and the method comprises the following steps: a control unit controls the rotation of a main shaft motor, a medium presser foot motor and a feeding motor according to a target pattern parameter, and obtains a target sewing stitch; the control unit obtains a given material pressing angle range from the expected material pressing angle range according to the cloth thickness and the sewing speed; the control unit obtains a given middle presser foot stroke from the expected middle presser foot stroke according to the cloth thickness and the middle presser foot height; according to the middle presser foot mechanism, a motor drives a crank, fisheye connectors A and B, a connecting rod, a pressing rod guide frame and other assemblies, and follow-up vertical movement of a middle presser foot is achieved. A motor is fixed through a support, an output shaft is connected with a driving crank, and the driving crank drives a fisheye connector A to be connected with a connecting rod and transmits motion to a pressing rod and a middle pressing foot. The pressing rod guide frame plays a guiding role and limits rotation of the pressing rod. The induction plate is arranged on the driving crank, when the middle presser foot is lifted to the highest point, the sensor can sense the induction plate, and position feedback is achieved.

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 utility model belongs to the technical field of sewing machines, and particularly relates to a button sewing machine which comprises a thread trimming driving rod, a thread trimming fork opening pushed by a cam is formed in the upper end of the thread trimming driving rod, and the lower end of the thread trimming driving rod is connected with a thread trimming connecting rod assembly. The middle end of the lifting and pressing lever is rotatably arranged in the machine body, a pushing part for pushing the cam is formed at one end of the lifting and pressing lever, the other end of the lifting and pressing lever is connected with a lifting and pressing foot assembly, and a first thread loosening part is formed on the lifting and pressing lever; a thread loosening fork opening for a first thread loosening part to push is formed in the lower end of the thread loosening driving rod, the upper end of the thread loosening driving rod is connected with a thread loosening assembly, and in the rotating process of the cam, one side of the thread shearing fork opening is firstly pushed, so that the thread shearing action is executed through the thread shearing connecting rod assembly, then the lifting and pressing lever is pushed, and the presser foot lifting action is executed through the presser foot lifting assembly. The thread trimming and presser foot lifting procedures are completed in sequence.

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 present invention provides a driving device for thread cutting, presser foot lifting and needle pitch adjustment, belonging to the technical field of sewing machines. It solves the problems such as reduced working efficiency of the existing device when meeting the requirements of driving thread cutting, presser foot lifting and needle pitch adjustment by one motor. The driving device for thread cutting, presser foot lifting and needle pitch adjustment includes a motor. A separately arranged thread cutting cam, a presser foot lifting cam and a needle pitch adjusting cam are fixedly connected to the rotating shaft of the motor. Both the thread cutting cam and the presser foot lifting cam are diamond-shaped, and the needle pitch adjusting cam is a curved quadrilateral. The needle pitch adjusting mechanism abuts against the outer peripheral wall of the needle pitch adjusting cam. When the effective needle pitch adjusting section of the needle pitch adjusting cam acts on the needle pitch adjusting mechanism, the thread cutting idle stroke surface of the thread cutting cam acts on the thread cutting mechanism, and the lifting idle stroke surface of the presser foot lifting cam acts on the presser foot lifting mechanism. This device meets the requirements of driving thread cutting, presser foot lifting and needle pitch adjustment by one motor and improves the working efficiency of the sewing machine at the same time.

The invention provides a cloth stem-crossing detection sewing device and method. The cloth stem-crossing detection sewing device comprises a first presser foot rod provided with an outer presser foot, a second presser foot rod provided with an inner presser foot, a presser foot transmission mechanism, a control module, a sewing material thickness detection sensor, an alternating quantity adjusting mechanism, an alternating quantity detection sensor and an alternating quantity adjusting driving source. The sewing material thickness detection sensor is obliquely mounted at the bottom of the sewing machine shell; detection points, falling on the sewing material, of the sewing material thickness detection sensor are distributed on the rear sides of the outer presser foot and the inner presser foot in the feeding direction of forward feeding during forward sewing of the sewing machine; the presser foot transmission mechanism is provided with a transmission swing seat for determining the alternating quantity of presser feet, and the alternating quantity adjusting driving source is connected with the transmission swing seat through the alternating quantity adjusting mechanism. The sewing material thickness is effectively detected in advance, so that the presser foot alternation amount is adjusted in time, the presser foot alternation amount of the sewing machine adapts to the change of the sewing material thickness, efficiency is improved, stem-crossing stitches are beautified, and sewing quality is guaranteed.

The invention provides a presser foot slow descending control method and system, electronic equipment and a sewing machine. The method comprises the steps of obtaining target data; the target data comprises a target position, a current position and a preset slow descending position of the presser foot; the preset slow descending position is a preset pause position of the presser foot; comparing the target position with the preset slow descent position to obtain a comparison result; if the comparison result shows that slow descending is needed, descending the presser foot from the current position to the target position according to a preset slow descending strategy; and if the comparison result shows that slow descending is not needed, descending the presser foot from the current position to the target position according to a closed-loop control algorithm. The descending speed of the presser foot can be effectively reduced aiming at the electromagnet lifting presser foot, and noise is reduced. Meanwhile, the application range is wide, and the device is suitable for different electromagnet presser foot lifting machine types, such as flat sewing and overlock sewing.

To enable various sewing steps to be carried out by a common sewing machine.SOLUTION: A sewing system comprises: a sewing machine unit including a sewing machine body and a sewing machine table on which the sewing machine body is installed; an auxiliary unit including an auxiliary mechanism to carry out a previous step of a fabric sewing work by the sewing machine body and an auxiliary table on which the auxiliary mechanism is installed; and a connection mechanism to connect the sewing machine unit and the auxiliary unit so as to be releasable. The connection mechanism has a positioning structure to adjust position between the sewing machine table and the auxiliary table.SELECTED DRAWING: Figure 1

The utility model relates to a machine head integrated cutter structure which comprises a machine shell and a mounting shell integrally formed on the machine shell, a first cavity and a second cavity are formed in the mounting shell, a sliding rod and a driving structure for driving the sliding rod to vertically slide are arranged on the first cavity in a sliding mode, and the top end of the sliding rod is located in the first cavity; the bottom end of the sliding rod downwards penetrates through the first cavity, and the cutter is installed at the bottom of the sliding rod. The driving structure comprises a motor, a sliding spring and a cam; the cam is rotationally connected to the inner wall of the first cavity, the axis of the cam is transverse, and the motor drives the cam to rotate; a sliding block is arranged at the top end of the sliding rod, the sliding spring is located between the sliding block and the inner wall of the first cavity and jacks up the sliding block, and the cam rotates to press the sliding block downwards to enable the cutter to cut the line. The second cavity is used for installing the presser foot mechanism and communicates with the first cavity, and the sliding rod is connected to the first cavity in a sealed and sliding mode. The cutter structure has the effect that the cutter structure is more convenient to lubricate.

The invention relates to the technical field of sewing machines, in particular to a sewing machine presser foot lifting control method, which is characterized in that a main shaft motor, a feed lifting motor, a driving motor, a main shaft driven by the main shaft motor to rotate, a feed dog frame positioned below a needle plate and a feed dog mounted on the feed dog frame are arranged in the sewing machine; the main shaft drives the tooth frame and the feeding teeth to move back and forth in a reciprocating manner through a feeding mechanism connected between the main shaft and one end of the tooth frame; the feed lifting motor drives the feed rack and the feeding teeth to reciprocate up and down through a feed lifting mechanism connected between the feed lifting motor and the other end of the feed rack; the driving motor drives the presser foot to lift through a presser foot lifting mechanism connected between the driving motor and the presser foot; and before the driving motor drives the presser foot lifting mechanism to execute the presser foot lifting action, the feed dog lifting mechanism is driven by the feed dog lifting motor to enable the feed dog to be below the needle plate. The cloth cannot be dragged even if the feeding teeth move back and forth when the presser foot is lifted, so that the cloth can be conveniently taken and placed, the cloth is protected from being scratched, and the influence on the use of customers is avoided.

The invention discloses a trademark stitching template which comprises a base cloth clamping piece, a top plate and a movable pressing plate. The bottom cloth clamping piece comprises a bottom plate provided with a nail seam through hole in a penetrating manner and a core plate which is provided with a trademark embedding hole in a penetrating manner and is superposed on the bottom plate; a limiting hole is formed in the top plate in a penetrating manner, and the top plate is removably stacked on the side, deviating from the bottom plate, of the core plate; the movable pressing plate is movably arranged in the limiting hole, provided with a pressing foot positioning hole in a penetrating mode and provided with a trademark abutting face. During use, the presser foot is matched in the presser foot positioning hole of the movable pressing plate in a concave-convex mode, the movable pressing plate moves relative to a trademark and evenly presses the two sides of a sewing needle while the presser foot moves along a preset closed pattern track, it is guaranteed that trademark stitching stitches are accurate, stitching tension is even, and then it is guaranteed that base cloth after trademark stitching is smooth and free of wrinkles; and the quality consistency of trademark stitching can be improved. The invention further discloses trademark nailing equipment and a trademark nailing method based on the trademark nailing template.

The utility model discloses a turn-over device. The turn-over device comprises a mounting seat, a first pressing mechanism, a second pressing mechanism and a turn-over mechanism, the second pressing mechanism comprises two lifting pressing assemblies; the turn-over mechanism comprises a plurality of blowing assemblies and pressing and folding assemblies. The utility model further discloses automatic top fly sewing equipment. According to the sewing machine, the first pressing mechanism is arranged and used for fixing sewing cloth; the lifting press-fit assembly is arranged to be used for pressing and loosening the folded part of the front fly material, the blowing assembly is arranged in cooperation to provide a blowing function to blow the folded part of the front fly material, the pressing and folding assembly folds the folded part of the front fly material, and automation is improved; according to the automatic top fly sewing equipment, full-automatic machining of automatic feeding of materials to be sewn, automatic top fly turning, sewing machining and discharging is achieved, the automation efficiency is improved, the labor intensity and cost of workers are reduced, and the production efficiency and quality of shirts are improved.

The present invention proposes a sewing machine with stitch length adjustment and zero-position positioning of a swing seat, specifically relating to the technical field of sewing machine manufacturing, comprising a driving source, a connecting rod, and a swing seat, characterized in that it also comprises an adjusting wheel and a slider, wherein the driving source drives the slider on the output shaft to indirectly position the swing seat at zero, and the slider is arranged on a slide groove of the adjusting wheel, the adjusting wheel is connected to the connecting rod, and the connecting rod is hinged to the swing seat. The present application has the characteristics of high accuracy in positioning the zero point of the swing seat, the static positioning wheel is fixed and equipped with an adjusting wheel to make the operation more stable, the gap between the various components is small after positioning, the degree of mechanical wear of the various components is small, and the noise is relatively low, which has the advantages of stable operation and high promotion and use value.

The utility model relates to the technical field of lockstitch sewing machines, in particular to a combined mechanism for trimming threads and adjusting feed lifting amount of a lockstitch sewing machine and the lockstitch sewing machine. Comprising a thread trimming mechanism, a feed lifting amount adjusting mechanism and a first driving motor, and the first driving motor drives the thread trimming mechanism and the feed lifting amount adjusting mechanism; a rotating area of a motor shaft of the driving motor I can be at least divided into a thread trimming area and a feed lifting amount adjusting area; when the motor shaft rotates in the thread trimming area, the thread trimming mechanism executes a thread trimming action, and the feed lifting amount adjusting mechanism does not execute effective feed rack height adjustment; when the motor shaft rotates in the feed lifting amount adjusting area, the feed lifting amount adjusting mechanism adjusts the effective height of the feed rack, and the thread trimming mechanism does not execute the thread trimming action; the feed lifting amount adjusting mechanism comprises a feed lifting assembly, a feed lifting amount adjusting assembly and a feed lifting amount adjusting assembly, the combined assembly is simultaneously connected with the feed lifting assembly, the driving motor I and the upper shaft; the upper shaft transmits power to the feed lifting assembly through the combined assembly, and the first driving motor adjusts the transmission amplitude between the upper shaft and the feed lifting assembly through the combined assembly.

The invention provides a transmission mechanism in a sewing machine or a button sewing machine and the sewing machine or the button sewing machine, and belongs to the technical field of sewing machines. The button sewing machine solves the technical problem of how to enable one power source to move buttons on the button sewing machine, lift presser feet, trim threads and the like. According to the transmission mechanism in the sewing machine or the button sewing machine, a first power source is connected with a swing disc and can drive the swing disc to swing relative to a rack, a first through groove and a second through groove are formed in the swing disc, the inner end of a connecting rod assembly is hinged to the first through groove and can slide in the first through groove, and the outer end of the connecting rod assembly is connected with a swing bottom plate; the inner end of the pull rod assembly is hinged to the second through groove and can slide in the second through groove, and the outer end of the pull rod assembly is connected with a lifting and pressing trimming swing rod. The first power source can drive the pull rod assembly and the connecting rod assembly to swing, the swing of the connecting rod assembly can move buttons on the swing bottom plate, and the swing of the pull rod assembly can swing the lifting and pressing thread trimming swing rod.

The utility model provides a swing mechanism in a sewing machine or a button sewing machine, and belongs to the technical field of sewing machines. The button sewing machine solves the problem of how to enable the moving precision of buttons on the button sewing machine to be high. And the like. According to the swing mechanism in the sewing machine or the button sewing machine, the sewing machine or the button sewing machine comprises a rack, a first power source and a swing bottom plate are arranged on the rack, the swing mechanism comprises a swing disc and a connecting rod assembly, the first power source is connected with the swing disc and can drive the swing disc to swing relative to the rack, a first through groove is formed in the swing disc, and a second through groove is formed in the connecting rod assembly. The inner end of the connecting rod assembly is hinged to the first through groove and can slide in the first through groove, and the outer end of the connecting rod assembly is connected with the swing bottom plate. The inner end of the connecting rod assembly is hinged into the first through groove, the first through groove plays a role in limiting swinging of the connecting rod assembly, the swinging precision of the swinging bottom plate is improved, and the moving precision of the button on the swinging bottom plate is improved.

The utility model relates to the technical field of sewing machines, and discloses a presser foot lifting mechanism of a sewing machine, which comprises the sewing machine, a motor is fixedly connected on the side wall of the sewing machine, an output shaft of the motor extends into the sewing machine and is fixedly connected with a turntable, and a connecting rod is fixedly connected on the side wall of the turntable. The rod wall of the connecting rod is movably sleeved with a movable rod, a connecting cylinder is fixedly connected to the bottom of the movable rod, a damping pad is slidably arranged on the inner wall of the connecting cylinder, and a pressing rod is fixedly connected to the bottom of the damping pad. The output shaft of the motor rotates to drive the rotating disc to rotate, the rotating disc rotates to drive the connecting rod to move, the movable rod is movably connected with the connecting rod in a sleeved mode to move along with the rotating disc, the movable rod moves to drive the connecting cylinder, the pressing rod and the presser lifting foot to move along the rotating track of the rotating disc, sewing cloth is moved, automatic feeding is conducted, and sewing efficiency is improved.

The invention provides a unilateral curved needle type three-dimensional composite material preform sewing head and a sewing method thereof, and belongs to the technical field of unilateral sewing, the unilateral curved needle type three-dimensional composite material preform sewing head comprises a rack, a thread leading mechanism, a thread hooking mechanism, a synchronous transmission mechanism, a thread guiding mechanism, a presser foot plate and a driving mechanism, the servo motor and the speed reducer are used for driving the thread leading needle and the thread hooking needle to rotate back and forth on a fixed plane respectively; the synchronous transmission mechanism ensures that cranks in the thread leading mechanism and the thread hooking mechanism rotate synchronously, and synchronous control can be achieved through one servo motor. The thread guide mechanism guides the trend of the suture thread, the tension of the suture thread is ensured, and the stitch forming efficiency is improved. It can be seen that the device is compact in structure and wide in application range, the prefabricated body can be sewn according to the penetrating thickness, non-penetrating sewing can be achieved, laying and splicing are completed, and the production efficiency and the product consistency are improved.

The utility model belongs to the technical field of sewing machines, and particularly relates to a double-stepping overedger which comprises a machine body, and a thread trimming assembly, a presser foot lifting assembly, a feed lifting tooth shaft and a feeding tooth frame are arranged in the machine body. The first stepping motor is arranged on the side face of the machine body, a first motor shaft is arranged in the first stepping motor, and double cams are installed on the periphery of the first motor shaft and used for driving the thread trimming assembly and the presser foot lifting assembly to act; the second stepping motor is arranged on the side face of the machine body, a second motor shaft is arranged in the second stepping motor, a first crank is installed on the periphery of the second motor shaft, and one end of the first crank is connected with a connecting rod. The second stepping motor can control the height of the feeding tooth frame, the rotation angle of the stepping motor is utilized to enable the teeth to operate according to the set height, through double-stepping control, non-pneumatization and non-electromagnet are achieved, production noise can be lowered, and the sewing effect is improved.

The invention belongs to the technical field of sewing equipment, and particularly relates to cloth bilateral fixing type sewing equipment which comprises a cloth conveying assembly, an electric sliding table is arranged at the bottom of the cloth conveying assembly, an electric sewing machine is slidably connected to the top of the electric sliding table, and the electric sewing machine is located at the center of the central axis of the cloth conveying assembly. The top of the cloth conveying assembly is used for conveying cloth, in the conveying process, the first cloth fixing assembly and the second cloth fixing assembly are used for moving downwards, the two edges of the cloth are fixed and the cloth is synchronously pressed in the process of approaching the cloth conveying assembly, and after the pressed cloth enters the electric sewing machine, the cloth is fixed by the first cloth fixing assembly and the second cloth fixing assembly. The electric sliding table is used for driving the electric sewing machine to move in a reciprocating mode and used for sewing cloth with the two sides fixed, and the two sides of the cloth can be reasonably fixed before and after sewing.

The utility model belongs to the technical field of sewing equipment, and particularly relates to a sewing machine capable of driving a presser foot to lift through a single motor and achieving differential adjustment. The upper differential feeding mechanism comprises an upper feeding tooth and an upper swing seat, and further comprises a motor and a presser foot lifting top plate, a rotating shaft of the motor is provided with a presser foot lifting cam and an upper feeding tooth control eccentric wheel, and the presser foot lifting top plate is rotationally connected to the machine shell and comprises two first supporting feet and two second supporting feet; a roller is arranged on the first supporting leg, the second supporting leg is connected with a presser foot lifting rear lever of the presser foot lifting mechanism through a connecting piece, and the roller rolls along the cam surface of a presser foot lifting cam; the upper feeding tooth control eccentric wheel is connected with the upper swinging seat through an upper feeding control connecting rod; according to the utility model, the motor is used as a power source, presser foot lifting and differential adjustment are respectively realized, the two mechanisms do not interfere with each other during adjustment, the structure is compact, the production cost is reduced, and the efficiency and the precision are high.

A sewing machine external unit includes: a holder holding fabric; a driver being detachable from a bed of a sewing machine and driving the holder along an upper surface of the bed; a pressing member moving in an up-down direction according to movement of a sewing needle in the up-down direction, pressing the fabric while the sewing needle is stuck in the fabric, and rising together with the sewing needle in response to the sewing needle coming out of the fabric and rising; a position detector detecting a position of the pressing member in the up-down direction; a signal output part outputting a signal to the sewing machine; and a controller outputting a needle drive signal for driving the sewing needle from the signal output part to the sewing machine, and controlling driving of the holder and / or the sewing needle based on a detection result of the position detector.

The utility model relates to the technical field of textile machinery, and provides a sewing machine which is convenient for adjusting the pressing height and has strong applicability and is convenient for adjusting the height of a middle presser foot. The utility model comprises a processing table and a main power unit arranged on the processing table, a sewing head is arranged at the upper end of the main power unit, the sewing head comprises a connecting shell fixedly connected to the end surface of the main power unit and a sewing needle column connected to the end of the main power unit on the outer wall, a forward and reverse motor is arranged on the top surface of the connecting shell, a follower pressure column which extends into the connecting shell and penetrates the connecting shell at the bottom is sleeved on the end of the forward and reverse motor, when the pressing height needs to be adjusted, the rotation angle of the forward and reverse motor is changed, and at this time, the pressing height of the follower pressure column can be synchronously increased or decreased.

The utility model provides a trimming and presser foot lifting mechanism of a button sewing machine, which comprises a driving motor, a presser foot lifting driving block, a trimming driving block, a trimming blade and a button clamp block which are arranged in a machine shell, a driving cam is arranged on an output shaft of the driving motor, the presser foot lifting driving block and the trimming driving block both abut against the side face of the driving cam, and the button clamp block is arranged on the side face of the driving cam. When the driving motor drives the driving cam to rotate, the driving cam sequentially drives the thread trimming driving block and the presser foot lifting driving block to rotate, and the rotating thread trimming driving block and the rotating presser foot lifting driving block respectively drive the thread trimming blade and the button clamp block to sequentially rotate through linkage pieces. According to the trimming and presser foot lifting mechanism of the button sewing machine, the driving motor drives the driving cam to rotate, trimming and lifting are driven in a staggered mode, trimming is conducted firstly, then presser foot lifting is conducted, trimming thread ends are shorter, stitches are more attractive, the subsequent thread end trimming process does not need to be set, and therefore the production cost is reduced.

The utility model relates to a sewing pressing plate device with a replaceable cam and sewing equipment. The replaceable cam sewing pressing plate device comprises a base, a cam base plate, a cam concave plate, a moving mechanism and a sewing pressing plate. Wherein the cam base plate is movably connected to the base, a cam rotor is arranged on the cam base plate, the cam concave plate is detachably connected to the base, a first side edge is arranged on the side, close to the cam base plate, of the cam concave plate, and the moving mechanism is installed on the base and connected to the cam base plate so as to be used for driving the cam rotor to move along the first side edge. The sewing pressing plate is movably connected to the base, a sewing channel is formed in the sewing pressing plate, and the shape of the sewing channel is the same as that of the first side edge. According to the replaceable cam sewing pressing plate device, arc-shaped stitches can be sewn through a flat machine, when the arc-shaped stitches of different shapes need to be sewn, only the cam concave plate and the sewing pressing plate need to be replaced, the cost of adopting a pattern machine head is saved, the consistency of the quality of sewn products is high, the machining efficiency is improved, and operation is easy.

The utility model belongs to the technical field of bag opening machines, and relates to a moving mechanism of a bag opening machine pressing frame assembly, which comprises a cross beam erected above a workbench, and the bottom of the cross beam is provided with an upper sliding table connecting plate which is driven by a transverse driving mechanism to slide along the transverse direction. A lower sliding table connecting plate which is driven by a longitudinal driving mechanism to slide in the longitudinal direction is arranged at the bottom of the upper sliding table connecting plate, and the transverse driving mechanism comprises a transverse synchronous belt assembly and a transverse displacement motor which is in transmission connection with the transverse synchronous belt assembly through a transverse motor transmission mechanism. The longitudinal driving mechanism comprises a longitudinal synchronous belt assembly and a longitudinal displacement motor in transmission connection with the longitudinal synchronous belt assembly through a longitudinal motor transmission mechanism, a pressing frame connecting plate is arranged at the front end of the bottom of the lower sliding table connecting plate, and a pressing frame assembly is fixedly connected to the front end of the pressing frame connecting plate. The moving mechanism of the bag opening machine pressing frame assembly has the advantages of being simple in structure, low in cost, convenient to maintain and high in moving speed.

The utility model relates to the technical field of bartacking machines, in particular to a combined driving mechanism of a bartacking machine and the bartacking machine. Comprising a thread sweeping mechanism used for executing a thread sweeping action; the presser foot lifting mechanism is used for executing a presser foot lifting action; the thread trimming mechanism is used for executing a thread trimming action; the driving motor is used for driving the thread sweeping mechanism, the presser foot lifting mechanism and the thread trimming mechanism to work; the thread sweeping mechanism comprises a thread sweeping action assembly, a thread sweeping mechanism and a thread sweeping mechanism, the transmission arm is used for being connected with the driving motor; the thread sweeping connecting rod is used for connecting the thread sweeping action assembly and the transmission arm, so that the driving motor can drive the thread sweeping action assembly to execute the thread sweeping action; the thread sweeping mechanism further comprises an independent driving assembly, and the independent driving assembly can independently drive the thread sweeping mechanism to work.