CN201501976U - A three-axis placket sewing machine - Google Patents

Abstract

The utility model discloses a three-axis top fly sewing machine, which comprises a stander and a machine board and a machine head and a cloth dragging device which are fixed on the stander. The machine head is provided with a sewing machine needle. The inside of the sewing machine is provided with a three-axis driving mechanism which drives the sewing machine needle to continuously complete the top fly sewing line consisting of sewing line sections in different directions, a touch screen for inputting a control command, and a controller which receives the control command and is electrically connected with the driving mechanism. The cloth dragging device is provided with an inductor for inducing a position of a cloth dragging presser foot relatively to the machine head. An output end of the inductor is connected with the controller. The controller which receives a transmission signal of the inductor and converts the transmission signal into an electric control signal is connected with a servo motor of the cloth dragging device. Therefore, the three-axis top fly sewing machine can sew the sewing lines of the both sides and the bottom of the top fly once. And in the sewing process, the user does not need to stop the machine and manually rotate the cloth. The three-axis top fly sewing machine is efficient and rapid, has good quality, can avoid mutual interference or collision of the machine head and the cloth dragging device, improves the service life of the whole machine and prevents the accident.

Description

A three-axis placket sewing machine

technical field

The invention relates to a sewing machine specially used for sewing a placket on clothing, in particular to a three-axis placket sewing machine which can quickly and automatically sew a placket.

technical background

At present, there are generally two methods to process a fly on the clothes, one is to use a common lockstitch sewing machine to sew by hand, and the other is to use a double-needle placket sewing machine to sew automatically. When using an ordinary lockstitch sewing machine to sew by hand, each time a line segment is sewn, it is necessary to lift the presser foot, rotate the fabric and then continue to sew, and finally cut or cut the fabric. This kind of hand-sewing is difficult to control the length, straightness and inclination of the suture line, and the hand-cut fabric is easy to cut the fabric, so the ordinary sewing machine is slow to sew the placket, and the quality of the workmanship is unstable. When using a double-needle placket sewing machine to sew automatically, two parallel seam segments can be sewn at the same time, but the seam segment at the bottom of the placket cannot be sewn. As shown in FIG. 1 , the two suture line sections 1a and 1b of the fly sewn by this sewing machine are parallel to each other, and the suture line sections 1a and 1b are not connected to form a complete suture line. Some double-needle placket sewing machines are equipped with a cutter on the rear side of the two needles. The cutter cuts a cut 2 between the suture line 1a and 1b. Since the cutter is installed on the rear side of the needle, the cutter and the needle are synchronized. running, so the cutter cannot cut to the bottom of the placket, it needs to be cut manually, and the bottom of the cut 2 is easy to collapse. In order to prevent or reduce the problems caused by the bottom of the placket, so that the clothing with a placket can obtain better and more beautiful effects and higher processing efficiency, the ends of the sutures 1a and 1b need to be sewn at one time with a horizontal suture segment, or It is a slanted seam segment, or two are all slanted seam segments, the placket of this effect, current double-needle placket sewing machine and ordinary sewing machine cannot do. Simultaneously, present double-needle door guard sewing machine mechanism is complicated, and cost is high.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a three-axis placket sewing machine that can sew out the suture line sections on both sides of the placket and the bottom of the placket at one time, so as to solve the problem of slow manual sewing speed and unstable process quality It realizes the sewing effect that the existing double-needle placket sewing machine cannot do. At the same time, prevent the machine head and the mop device from colliding with each other to ensure the safety of the machine.

Another object of the present invention is to improve the mopping effect of the mopping device and prevent the cloth from wrinkling.

A further object of the present invention is to improve the installation process of the three-axis placket sewing machine and provide an installation structure that facilitates the adjustment of the machine board.

Another object of the present invention is to improve the cloth pulling device, simplify the structure of the cloth pulling device, reduce the cost, and automatically pull away the cloth or clothing material after sewing.

The technical solution of the present invention is: a three-axis placket sewing machine, including a frame and a machine plate, a machine head fixed on the frame, and a mop device, and only one sewing machine needle is arranged on the machine head, and it is characterized in that: The sewing machine is equipped with a three-axis drive mechanism that drives the sewing machine needle to continuously complete the suture line of the placket composed of suture line segments in different directions, as well as a touch screen for inputting control commands and a controller that receives control commands and is electrically connected to the drive mechanism. The device is equipped with a sensor that senses the position of the mop bar relative to the machine head. The output end of the sensor is connected to the controller, and the controller that receives the signal transmitted by the sensor and converts it into an electric control signal is connected to the servo motor of the mop device. .

The placket suture includes a plurality of continuous or dispersed suture segments composed of straight lines and/or oblique lines and/or curved lines and/or arc lines.

The suture line of the placket includes the left and right suture line segments of the placket and the bottom suture line segment of the placket connecting the ends of the left and right suture line segments; the suture line segment at the bottom of the placket is in the shape of "-", or "V", or " ", or "/", or "\".

The three-axis drive mechanism includes a needle drive mechanism that drives the sewing machine needle to move up and down, a mop bead drive mechanism that drives the mop bead to move longitudinally, and a machine head drive mechanism that drives the machine head to move laterally. The sewing machine needle drive mechanism and the mop bead drive The mechanism and the machine head drive mechanism are respectively electrically connected to the output end of the controller.

The drive mechanism of the machine head includes a motor installed at the bottom of the machine plate and a screw linked with the output shaft of the motor. The two ends of the screw are supported by bearings and bearing seats. The screw is equipped with a nut, which is installed on the machine head through the flange. The machine head is fixed on the machine head mounting seat; or the machine head driving mechanism includes a motor installed at the lower part of the machine plate, an active synchronous toothed wheel linked with the motor output shaft, and a The driven synchronous toothed wheel, the active synchronous toothed wheel and the driven synchronous toothed wheel are covered with a synchronous toothed belt, the synchronous toothed belt is connected with the machine head mounting seat, and the machine head is fixed on the machine head mounting seat.

The mop bead driving mechanism includes a motor installed on the frame and a screw linked with the output shaft of the motor. The two ends of the screw are fixed by bearings and bearing seats. The screw is equipped with a nut, which is installed on the mop bead through a flange. The mop bead is hinged on the mop bead installation seat; or the mop bead driving mechanism includes a motor, an active synchronous toothed wheel linked with the output shaft of the motor, and a driven synchronous toothed wheel is provided along the moving direction of the mop bead. The active synchronous toothed wheel and the driven synchronous toothed wheel are covered with a synchronous toothed belt, the synchronous toothed belt is connected with the mop bead mounting seat, and the mop bead is hinged on the mop bead mounting seat.

The mopping strips include at least two mopping strips arranged parallel to each other, and sensors are respectively installed on the mopping strip mounting seats corresponding to each mopping strip.

As a further improvement of the present invention, the mop layer includes a layer body and a pressing piece, the middle part of the pressure piece is pivotally connected to the front end of the layering body through a pin; A limit groove is provided on the main body of the bead corresponding to the limit groove, and a limit screw or a limit pin passing through the limit groove is provided; A position slot, the rear end of the pressing sheet is provided with a limit pin passing through the limit slot.

As a further improvement of the present invention, the machine plate includes a fixed machine plate and a movable machine plate, the fixed machine plate is fixedly connected with the frame, the movable machine plate is fixedly connected with the machine head, and The size and position of the sewing machine needle correspond to the lead hole; the fixed machine plate is provided with a laminate, and the laminate is connected to the fixed machine plate through a movable adjustment device.

The movable adjustment device includes a mounting strip fixed on the bottom of the fixed machine plate by screws, and a radial adjustment space is reserved between the mounting hole on the mounting strip and the screw; the counterbore is provided on the laminate, corresponding to the counterbore There is a light hole on the plate of the fixed machine, and the countersunk screw passes through the countersunk hole and the light hole and is threadedly connected with the mounting bar. There is a gap between the light hole and the countersunk screw, which is consistent with the radial adjustment space of comparable size.

The bottom of the fixed machine plate is fixedly connected with a mounting seat, and the mounting bar is fixed on the bottom of the mounting seat by screws, and the position corresponding to the counterbore on the mounting seat is provided with a through hole equivalent to the diameter of the light hole on the fixed machine plate.

A presser foot installation frame is provided on the rear side of the machine needle, and the presser feet arranged on the left and right sides of the machine needle are pivotally connected to the presser foot installation frame through pin shafts. The rear side of the presser foot installation frame is provided with a positioning plate. A tension spring is arranged between the end and the positioning plate.

The frame is provided with an independently installed cutter device, the cutter device includes a cutter motor electrically connected to the controller, the cutter motor is fixed on the motor flange, and the output shaft of the cutter motor is connected to the eccentric wheel , the eccentric wheel is connected with two parallel optical axes through a double bearing device, the two optical axes are set in the linear bearing, the other end of the two optical axes is connected with the cutter frame, the cutter is fixed on the cutter frame; the linear bearing is fixed On the cutter mounting seat, an air cylinder is also arranged on the cutter mounting seat, and the piston rod of the air cylinder is connected with the motor flange.

As another improvement of the present invention, a cloth pulling device is provided on the frame, and the cloth pulling device includes a mounting seat connected to the frame, a branch pipe is pivotally connected to the end of the mounting seat away from the frame, and the cloth pulling cylinder The cylinder body and the piston shaft are pivotally connected to the end of the mounting seat close to the frame and the branch pipe; The outer sleeve of the cloth round shaft is equipped with a cloth clamping cylinder seat that is fixedly connected with the cylinder body of the cloth clamping cylinder, and the seat of the cloth clamping cylinder is fixedly connected with the branch pipe; the piston shaft of the cloth clamping cylinder is connected with the cloth clamping foot seat, and the cloth clamping foot The front end of the seat is hinged with upper and lower cloth clamping feet, the hinged ends of the two cloth clamping feet are respectively provided with protrusions facing the opposite cloth clamping feet, and the other end of the cloth clamping foot is provided with a cloth clamping optical axis; The part between the two clamping feet of the foot base is provided with an optical hole for the clamping shaft to pass through, and the front end of the clamping optical axis is provided with a groove corresponding to the protrusion, and the protrusion is accommodated in the groove , the rear end of the clamping cloth optical axis is provided with a stopper whose outer diameter is larger than that of the clamping cloth round shaft.

The rear end of the cloth clamping optical axis is provided with a thread, and the thread is connected with a cloth clamping foot pre-opening angle adjustment nut; the adjustment nut is located between the stopper and the cloth clamping round shaft, and its outer diameter is smaller than the clamping cloth The inner diameter of the shaft.

The stopper is an adjusting nut for adjusting the cloth thickness of the cloth clamping foot.

The present invention adopts the beneficial effect of above-mentioned technical scheme to be:

1. Compared with the existing double-needle placket sewing machine, the width between the suture line sections on the left and right sides of the placket made by the three-axis placket sewing machine of the present invention can be adjusted arbitrarily; each suture line can not only be made into parallel lines, but also It can be a combination of straight lines, oblique lines, curved lines or arcs, and can sew any fancy patterns, which is very convenient, and the bottom of the placket can also be sewn with sutures, so that the bottom of the placket incision is not easy to collapse; Cut the placket at any position, especially the bottom of the placket can be cut at one time, no need to manually cut the bottom of the placket, and the incision is straight and the effect is good.

2. Compared with the existing ordinary single-needle sewing machine, this three-axis placket sewing machine can realize the sewing and cutting of the placket fully automatically at one time, without stopping or manual operation in the middle, with fast sewing speed, good effect and excellent craftsmanship. The quality is stable, which can save a lot of manpower and material resources, and greatly improve the production efficiency.

3. The mopping mechanism is equipped with a sensor that can sense the position of the mopping foot, which can avoid mutual interference or collision between the machine head and the mopping bar, improve the service life of the whole machine, and prevent accidents.

4. The mopping strip adopts the flexible connection between the main body of the pressing strip and the pressing piece to form a lever-type connection relationship. When sewing thicker fabrics, the pressing piece can automatically adjust the angle to keep the pressing piece flat on the cloth as a whole to prevent mopping The fabric wrinkled or loosened during the process.

5. The machine head is connected with the movable machine plate, and follows the horizontal reciprocating movement of the machine head, so there is no need to set up a long slot on the machine plate to avoid the sewing machine needle, so as to avoid the stitching of the placket caused by the lack of support of the fabric in the long slot. Wrinkle; at the same time, the laminates on the fixed board can be adjusted flexibly. When there is a large gap between the laminates and the movable board, the assembly between the laminates and the movable board can be easily adjusted through the movable adjustment device. deviation.

6. The rear part of the movable presser foot of the machine needle is equipped with a tension spring, which changes the pressing method of using elastic steel strips in the prior art. When sewing, the presser foot can be raised or lowered according to the thickness of the fabric, and maintain proper pressing force.

7. The three-axis placket sewing machine is equipped with an independent cutter device, which can automatically cut the placket according to the sewing position of the placket at one time while the placket is sewing, so as to improve work efficiency. The cutter adopts a unique double optical axis structure to ensure good stability when cutting cloth up and down at high speed. knife life.

8. The cloth pulling device uses the cloth pulling cylinder to drive the branch pipe to swing, thus replacing the branch pipe in the prior art driven by the guide rail to move in translation; another cloth clamping cylinder can realize the cloth clamping and forward and backward movements of the cloth clamping foot at the same time, avoiding The technical defect that two air cylinders are used for cloth clamping and forward and backward respectively in the prior art is eliminated, the structure of the cloth pulling device is greatly simplified, and the cost is reduced.

Description of drawings

Fig. 1 is the sewing effect drawing of existing placket;

Fig. 2 is a schematic view showing the structure of the three-axis placket sewing machine of the present invention;

Fig. 3 is the pattern drawing of the placket that the placket sewing machine of the present invention sews;

Fig. 4 is the structural diagram of head drive mechanism;

Fig. 5 is a schematic structural diagram of another embodiment of the head drive mechanism;

Fig. 6 is a schematic structural diagram of the driving mechanism for the mop bead;

Fig. 6A is a schematic diagram of another installation method of the sensor on the mop bead;

Fig. 7 is a schematic structural diagram of another embodiment of the mop bead driving mechanism;

Figure 8 is an enlarged view of A in Figure 6;

Fig. 9 is a plan view of the machine board;

Figure 10 is a B-B sectional view of the connection mode between the fixed machine plate and the laminate;

Fig. 11 is a B-B cross-sectional view of another connection mode between the fixed machine plate and the laminate;

Figure 12 is a structural diagram of the presser foot of the machine needle and the presser foot mounting seat;

Fig. 13 is the right view of Fig. 12;

Figure 14 is a front view of the independent cutter device;

Figure 15 is a side view of the independent cutter device;

Fig. 16 is a structural diagram of the pulling device;

Fig. 17 is a structural view in which the mop cylinder in the cloth pulling device drives the cloth clamping foot forward;

Fig. 18 is a structural view of the mop cylinder in the cloth pulling device driving the cloth clamping foot to clamp the cloth.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the three-axis placket sewing machine of the present invention will be further described:

The three-axis flyback sewing machine of the present invention is researched and developed by referring to the existing double-needle flylet sewing machine, combining the flexibility of hand-sewing the flylet with a common single-needle sewing machine, and combining the advantages of both. The three-axis placket sewing machine of the present invention has following structural components: frame 5 shown in accompanying drawing 2, machine plate 6, the head 7 that is fixed on frame 5 tops, sewing machine needle 8 and sewing machine needle are installed on the machine head The driving mechanism 9, the sewing machine needle driving mechanism 9 drives the sewing machine needle 8 to reciprocate up and down with the sewing thread, the rear part of the machine plate 6 and the rear side of the machine head 7 are provided with a mopping strip driving mechanism 11 with two mopping strips 10, the mopping strip driving mechanism 11 drives the mop layer 10 to drive the longitudinal movement of the cloth. The placket sewing machine of the present invention is only provided with a sewing machine needle 8, and a head driving mechanism 12 is provided at the bottom of the head 7 to drive the head 7 to reciprocate laterally. In order to realize full-automatic work, a touch screen 13 for inputting control commands and a controller connected thereto are also provided. The controller outputs control commands to control the above-mentioned three-axis drive mechanism (that is, the head drive mechanism 12 forms the x-axis , The mop layer drive mechanism 11 forms the y-axis, and the machine needle drive mechanism 9 forms the z-axis) to realize the actions required by the user. Under the combined action of the three-axis drive mechanism and the controller, various fly styles as shown in Figure 3 can be sewn. This three-axis drive mechanism can also be applied to ordinary sewing machines, so that when the sewing machine is sewing any line shape, it can realize one-time automatic sewing without the need for sewing workers to adjust the fabric or sewing direction , reduce the labor intensity of sewing workers, improve work efficiency, and ensure the consistency of sewing quality.

In this embodiment, the sewing machine needle driving mechanism 9 includes a driving motor installed in the machine head 7, the output shaft of the driving motor is linked with the eccentric wheel on the other side of the machine head 7, the eccentric wheel is hinged with a column, and one end of the column A sewing machine needle holder is provided, and the sewing machine needle 8 is fixed on the sewing machine needle holder. Under the action of the drive motor, the sewing machine needle 8 reciprocates up and down to drive the sewing thread to sew the door. Because the present invention does not involve the improvement of the sewing machine needle drive mechanism 9, it will not be described in detail.

The drive mechanism 12 of the machine head of the placket sewing machine in this embodiment is as shown in Figure 4, a mounting plate 122 fixedly connected with the frame 5 is provided at the bottom of the machine plate 6, and a linear guide rail 123 is installed on the top of the mounting plate 122. The head 7 is connected to the machine head mounting seat 72 through the stud 71, and the linear bearing 124 matched with the linear guide rail 123 is installed under the machine head mounting seat 72; Motor 121, the output shaft of motor 121 is connected with screw rod 126, and the two ends of screw rod 126 are supported by bearing and the bearing seat that is fixed on the mounting plate 122, and screw rod 126 is sleeved with nut 127, and nut 127 is fixedly connected with it by the nut 127. The cap flange 128 is connected to the head mount 72 . When the output shaft of the motor 121 rotates, it drives the screw 126 to rotate, so that the nut 127 moves linearly along the axial direction of the screw 126 , and drives the machine head 7 to reciprocate laterally along the linear guide rail 123 .

Wherein the machine board 6 at least comprises front and rear two fixed machine boards 6a, 6b and a middle movable machine board 6c. As shown in accompanying drawing 9, fixed machine board 6a, 6b is fixedly connected with frame 5, movable machine board 6c is fixedly connected with machine head 7, and is installed on the sealing plate 7a of machine head 7 by screw, follows machine head 7 Under the action of head drive mechanism 12, it moves laterally to and fro. A lead hole 61c corresponding to the size and position of the sewing machine needle 8 is provided on the movable machine plate 6c. By setting the movable machine plate 6c fixed together with the machine head 7, when the machine head 7 reciprocates, the movable machine plate 6c also reciprocates at the same time, so it is not necessary to set up a space-avoiding sewing machine needle 8 on the original whole machine plate to move laterally The long groove, so as to prevent the cloth from falling into the groove due to no support at the long groove, soiling the cloth, and at the same time avoid causing wrinkles at the stitching of the placket, and fabric fluffing caused by repeated scraping between the cloth and the long groove. And because there is no need to set long grooves on the machine plate, it is possible to design a placket sewing machine with a longer head reciprocating stroke as required.

In order to reduce as much as possible and facilitate the adjustment of the assembly gap between the fixed machine boards 6a, 6b and the movable machine board 6c, the present invention has also made the following improvements, as shown in accompanying drawings 9 and 10, because the fixed machine board 6a usually A laminate 61 is provided, therefore, in this embodiment, multiple movable adjustment devices are used to connect the laminate 61 and the fixed machine plate 6a. The movable adjustment device includes a straight mounting strip 62, which is fixed on the bottom of the fixed machine plate 6a through screws 63 and washers, and a diameter of 0.5-3.0 mm is reserved between the mounting holes 64 on the mounting strip 62 and the screws 63. At the same time, countersunk holes are provided on the laminate 61, light holes 65 are provided on the fixed machine plate 6a corresponding to the countersunk holes, countersunk screws 66 pass through the countersunk holes and light holes 65, and are threaded with the mounting bar 62, There is also a gap between the light hole 65 and the countersunk screw 66, which is equivalent to the size of the above-mentioned radial adjustment space. In this way, only by slightly loosening the screw 63, the position of the laminate 61 can be adjusted in the horizontal plane, so that the gap between the laminate 61 and the movable machine plate 6c can be reduced as much as possible, preventing the cloth from being stuck in the gap, and can also be adjusted easily. The processing error of each hole position.

The movable adjusting device can also add a circular mount 67 between the mounting bar 62 and the fixed machine plate 6a or 6b as shown in accompanying drawing 11, and the mount 67 is fixed on the bottom of the fixed machine plate 6a by other screws. The bar is fixed on the mounting seat 67 by screws 63, and the position corresponding to the light hole 65 of the fixed machine plate 6a on the mounting seat 67 is provided with a through hole 68 equivalent in diameter to the light hole 65. The countersunk screw 66 passes through the light hole 65 and the through hole 68 and is threadedly connected with the mounting bar 62 .

In addition, the head drive mechanism 12 can also be realized by using a synchronous belt or a similar device, as shown in Figure 5, its specific structure is: a mounting plate 122 fixedly connected with the frame 5 is provided at the bottom of the machine plate 6, and A linear guide rail 123 is installed on the mounting plate 122 top, and the machine head 7 is connected with the machine head mounting seat 72 by a stud 71, and the machine head mounting seat 72 is equipped with a linear bearing 124 matched with the linear guide rail 123; One side is fixed with a motor 121 by the motor flange 125, and an active synchronous toothed wheel 128 is set on the output shaft of the motor 121, and a driven synchronous toothed wheel 129 is provided along the transverse movement direction of the machine head 7, and the driven synchronous toothed wheel 129 is connected with the mounting plate 122 through the synchronous toothed wheel mount 132; the active synchronous toothed wheel 128 and the driven synchronous toothed wheel 129 are covered with a synchronous toothed belt 130, and the synchronous toothed belt 130 is fixed with an inverted L-shaped connection piece 131, and the connecting piece 131 is connected with the head mount 72. When the output shaft of the motor 121 rotates, it drives the active synchronous toothed wheel 128 to rotate, so that the synchronous toothed belt 130 drives the machine head 7 to reciprocate laterally along the linear guide rail 123 .

The mop bead driving mechanism 11 in this embodiment is as shown in accompanying drawings 6 and 6A, the mop bead drive mechanism 11 is arranged on the machine plate 6b directly facing the rear of the sewing machine needle 8, and the corresponding two mop bead 10 are also arranged side by side on the mop The bottom of bead driving mechanism 11. The mop bead driving mechanism 11 includes a linear guide rail 111 fixed on the front and rear mounting plates 112, 113, a servo motor 115 is fixed on the rear mounting plate 113 by a motor flange 114, and the output shaft of the servo motor 115 is coaxial with the screw rod 116 connection, the two ends of the screw 116 are supported by bearings and bearing seats, the bearing seats are fixed on the front and rear mounting plates 112, 113, the screw 116 is covered with a nut 117, and the nut 117 is connected with the L-shaped nut flange 118 The mop bead mounting seat 119 is connected, and meanwhile, the linear bearing 120 installed on the mop bead mounting seat 119 cooperates with the linear guide rail 111. The mop bead 10 is hinged with the mop bead mounting seat 119, and a cylinder 14 is also installed behind the mop bead mounting seat 119. The piston rod of the cylinder 14 is hinged with the rear end or hinge of the mop bead 10, so that the mop bead 10 can be mounted on the piston rod. Under the effect of lever movement, reduce the movement resistance of mop bead driving mechanism 11, simultaneously by adjusting the piston rod and air pressure of cylinder 14, can change the compression degree of mop bead 10 front ends to cloth. An important improvement has been made to the mop bead 10 in the present invention, two mop bead 10 are respectively provided with the inductor 18 of sensor relative machine head 7 (especially machine needle 8) position, the output end of inductor 18 and The controller is connected, and the controller that receives the signal transmitted by the sensor and converts it into an electric control signal is connected with the servo motor 115 of the mop bead driving mechanism 11 .

Wherein, the mop bead 10 is composed of a bead body 101 and a pressing piece 102 which are movably connected. As shown in Figures 7 and 8, the middle part of the pressing piece 102 is pivotally connected to the front end of the pressing strip main body 101 through a pin shaft 103, and the rear end of the pressing piece 102 is provided with a limiting groove 104 that limits the rotation angle of the pressing piece 102 around the pin shaft 103 A position corresponding to the limiting groove 104 on the bead main body 101 is provided with a limiting pin 105 passing through the limiting groove 104 . In this way, a lever-like connection is formed between the pressing piece 102 and the bead main body 101. When sewing thicker cloth, the pressing piece 102 can automatically adjust the angle to keep the pressing piece 102 flatly pressed on the cloth as a whole, preventing the cloth from being mopped. The fabric wrinkles during the process. At the same time, the limiting pin 105 can also be arranged on the pressing piece 102 , and then the corresponding limiting groove 104 is arranged on the bead main body 101 .

Certainly, above-mentioned mop bead driving mechanism 11 also can adopt synchronous belt or similar device to realize, and as shown in accompanying drawing 7, active synchronous toothed wheel 106 is connected with the output shaft of motor 115 coaxially, along mop bead 10 traveling direction A driven synchronous toothed wheel 107 is provided, and a synchronous toothed belt 108 is set on the active synchronous toothed wheel 106 and the driven synchronous toothed wheel 107. The synchronous toothed belt 108 is connected with the mop bead mounting seat 119, and the mop bead 10 is connected with The mop bead mounting seat 119 is hinged. Its difference with accompanying drawing 4 structure is to replace screw rod 116 and nut 117 with synchronous toothed wheel 106,107 and synchronous toothed belt 108.

As shown in accompanying drawings 12 and 13, a presser foot mounting frame 81 is provided on the rear side of the machine needle 8, and the presser feet 82 respectively arranged on the left and right sides of the machine needle 8 are pivotally connected to the presser foot mounting frame 81 through a pin shaft 85. A positioning plate 81a is provided on the rear side of the installation frame 81, and a tension spring 83 is provided between the rear end of the presser foot 82 and the positioning plate 81a. Since the tension spring 83 is set at the rear of the presser foot 82, instead of the pressing method using a cam structure in the prior art, the presser foot 82 can maintain an appropriate pressing force when sewing cloths of different thicknesses.

Simultaneously, an important improvement has been made to the fly sewing machine in this embodiment, that is, the frame is provided with an independently working cutter device 19, so that the stitching and cutting of the fly can be completed simultaneously without manual cutting. The cutter device 19 is shown in accompanying drawings 14 and 15, the cutter device 19 has two optical axes 197, the two optical axes 197 are sleeved in the linear bearing 198 and connected by upper and lower biaxial connecting seats 199a, 199b to form a One; the cutter 194 of the cutter device 19 is fixed on the cutter seat 195, and then fixedly connected with the cutter frame 196, and the cutter frame 196 is connected with two optical axes 197 and the lower biaxial connection seat 199b; the cutter device The cutter motor 193 of 19 is installed on the cutter motor flange 192, and the cylinder 200 of the cutter motor 193 bottom is fixed on the cutter mount 191, and the piston rod of the cylinder 200 is installed on the bottom of the cutter motor flange 192, and the cutter The output shaft of the knife motor 193 passes through the waist-shaped hole on the cutter mounting seat 191 and is connected with the eccentric wheel 201, and the eccentric wheel 201 is connected with the upper double-axis connecting seat 199a through a double bearing device 202 composed of a double bearing seat and a double bearing. Simultaneously, the cutter motor 193 is electrically connected with the controller. Under the action of the cutter motor 193 and the eccentric wheel 201, the cutter 194 reciprocates up and down. Simultaneously, by adjusting the air cylinder 200, the overall lift of the cutter 194 together with the cutter motor 193 can be realized, and the distance between the cutter 194 and the machine board 6 can be adjusted. Owing to being provided with independent cutter device 9 on this placket sewing machine, the placket can be automatically cut according to the placket sewing position at one time when the placket is sewing, so as to improve work efficiency. And its cutter 194 adopts a unique double optical axis structure, which ensures good stability when cutting cloth up and down at high speed, and the cutter will not shake, making the front cut neat and beautiful, improving product quality, and reducing the wear of the cutter. The service life of the cutter is extended.

The three-axis placket sewing machine of the present invention is also provided with a pulling device 3 . As shown in accompanying drawings 16 to 18, the cloth pulling device 3 includes a cloth pulling device mounting base 31 connected to the frame 5, and an inverted L-shaped branch pipe 32 is pivotally connected to the end of the mounting base 31 away from the frame 5, and the pulling cloth The cylinder body and the piston shaft of the air cylinder 33 are respectively pivotally connected to the cloth pulling cylinder mounting seat 33 a on the cloth pulling device mounting seat 31 and the cloth cylinder clamping seat 32 a on the branch pipe 32 . Therefore, the branch pipe 32 can drive the parts at the upper end to swing back and forth under the driving of the cloth pulling cylinder 33, thereby pulling the sewn clothing or cloth clamped by the cloth clamping foot 38 from the machine plate 6 to a designated position. Because the branch pipe is inverted L-shaped, the horizontal pipe at the upper end of the branch pipe 32 is provided with a branch pipe clamping seat 32b and a clamping shaft 35 set in the cloth clamping shaft 36, and the cloth clamping cylinder 34 is parallel to the cloth clamping round shaft 36 Arrangement, clamping cloth cylinder block 34a is overlaid with cloth circular shaft 36, the cylinder body of clamping cloth cylinder 34 is fixedly connected with clamping cloth cylinder block 34a, and clamping cloth cylinder block 34a is fixedly connected with branch pipe 32 by branch pipe clamping seat 32b. In addition, the piston shaft of the cloth clamping cylinder 34 is connected with the cloth clamping foot seat 37. The front end of the cloth clamping foot seat 37 is hinged with two upper and lower cloth clamping feet 38. The protrusion 38a on the side of the presser foot, the other end of the cloth clamping foot 38 is provided with a cloth clamping optical axis 39; the part between the two clamping cloth presser feet 38 of the cloth clamping foot seat 37 is provided with a cloth clamping shaft 35 to pass through. The front end of the clamping optical axis 35 is provided with a groove 35a corresponding to the protrusion 38a, and the protrusion 38a is accommodated in the groove 35a, and the rear end of the clamping optical axis 35 is provided with a thread, and the outer diameter is set on the thread The stopper 351 that is greater than the cloth circular axis 36. When the piston shaft of the cloth clamping cylinder 34 moves forward, it drives the cloth clamping foot 38 to move forward (as shown in Figure 17), and when the stopper 351 hits the end face of the cloth clamping round shaft 36, the cloth clamping cylinder 34 Piston shaft continues to move forward, and clamping pull axle 35 pulls clamping cloth presser foot 38 and rotates, and as shown in accompanying drawing 18, clamps the cloth that has been sewn. Branch pipe 32 then swings to designated position under the driving of pulling cloth cylinder 33 again, and the piston shaft of 34 of clamping cloth cylinder retreats, and clamping cloth presser foot 38 opens, and puts down cloth. So repeatedly exercise. When the stopper 351 adopts an adjustable nut, it can be used to pre-adjust the rotation angle of the cloth clamping foot 38, so that the cloth clamping thickness of the cloth clamping foot 38 can be adjusted. In addition, it can also be used to adjust the pre-opening angle adjustment nut 352 of the cloth clamping foot 38 on the thread of the clamping pull shaft 35. The outer diameter of cloth circular shaft 36. As shown in accompanying drawing 17, the current two clamping feet 38 keep parallel, because a compression spring 353 is provided between the clamping pull shaft 35 and the clamping round shaft 36, when adjusting the adjusting nut 352 to the right, the two clamping The distance between the cloth optical axes 39 will become smaller, that is, the pre-opening angles of the two clamping presser feet 38 will become smaller; when the adjusting nut 352 is adjusted to the left, under the action of the compression spring 353, the distance between the two clamping optical axes 39 will be reduced. becomes larger, that is, the pre-opening angles of the two cloth presser feet 38 become larger. Certainly above all technical effects all realize under the prerequisite that the stroke setting of clamping cloth cylinder 34 is constant.

The placket sewing machine of the present invention is equipped with a three-axis driving mechanism, so it can automatically sew any two-dimensional pattern on the cloth, realize the sewing effect that the existing double-needle placket sewing machine cannot achieve, and solve the problem of manual sewing at the same time The problem of slow speed and unstable process quality is to realize one-time sewing of the suture lines on both sides of the placket and the bottom of the placket and at the same time cut the placket at the appropriate position according to the user's requirements.

Claims (16)

1. three button stay sewing machines, comprise frame and machine plate, be fixed on the head on the frame, the mop device that has the mop presser feet, only be provided with one piece of Sewing needles on the head, it is characterized in that: be provided with in the described Sewing machines and drive this Sewing needles and finish continuously and sew up line segment by different directions and form sutural three driving mechanisms of left front, and the touch-screen of input control order and the controller that receives control instruction and be electrically connected with this driving mechanism, described mop device is provided with the inductor of the relative head of induction mop press strip position, the output of described inductor is connected with controller, and the controller that receives inductor transmission signal and be converted to automatically controlled signal is connected with the servomotor of mop device.

2. three button stay sewing machines according to claim 1 is characterized in that: described left front suture comprises be made up of straight line and/or oblique line and/or curved line and/or camber line many continuously or the stitching line segments that disperse.

3. three button stay sewing machines according to claim 2 is characterized in that: described left front suture comprises left and right stitching line segment of left front and the left front bottom stitching line segment that is connected left and right stitching line segment end; The left front bottom is sewed up line segment and is "-" shape, or " V " shape, or Shape, or "/" shape, or " " shape.

4. according to each described three button stay sewing machines of claim 1 to 3, it is characterized in that: described three driving mechanisms comprise the head driving mechanism of the needle drive that drives Sewing needles and move up and down, the mop press strip driving mechanism that drives the lengthwise movement of mop press strip and the transverse movement of driving head, and described Sewing needles driving mechanism, mop press strip driving mechanism, head driving mechanism are electrically connected with the output of controller respectively.

5. three button stay sewing machines according to claim 4, it is characterized in that: described head driving mechanism comprise the motor that is installed in machine plate bottom, with the screw rod of motor output shaft interlock, the two ends of screw rod are supported by bearing and bearing block, nut is housed on the screw rod, nut is connected with the head mount pad by flange, and head is fixed on the head mount pad; Perhaps described head driving mechanism comprise the motor that is installed in machine plate bottom, with the active synchronization toothed wheel of motor output shaft interlock, be provided with driven synchronizing jugged the wheel along head transverse movement direction, described active synchronization toothed wheel and driven synchronizing jugged the wheel are set with synchronous cog belt, synchronous cog belt is connected with the head mount pad, and head is fixed on the head mount pad.

6. three button stay sewing machines according to claim 4, it is characterized in that: described mop press strip driving mechanism comprise the motor that is installed on the frame, with the screw rod of motor output shaft interlock, the two ends of screw rod are fixed by bearing and bearing block, nut is housed on the screw rod, nut is connected with mop press strip mount pad by flange, and the mop press strip is hinged on the mop press strip mount pad; Perhaps described mop press strip driving mechanism comprise motor, with the active synchronization toothed wheel of motor output shaft interlock, be provided with driven synchronizing jugged the wheel along mop press strip direct of travel, described active synchronization toothed wheel and driven synchronizing jugged the wheel are set with synchronous cog belt, synchronous cog belt is connected with mop press strip mount pad, and the mop press strip is hinged on the mop press strip mount pad.

7. three button stay sewing machines according to claim 6 is characterized in that: described mop press strip comprises two that are arranged in parallel at least, is separately installed with inductor on the mop press strip mount pad of every mop press strip correspondence.

8. three button stay sewing machines according to claim 1 is characterized in that: described mop press strip comprises press strip main body and compressing tablet, and the front end of the middle part of described compressing tablet and press strip main body articulates by bearing pin; The rear end of compressing tablet is provided with and limits the stopper slot of compressing tablet around the bearing pin anglec of rotation, and the position corresponding with this stopper slot is provided with stop screw or the spacer pin that passes this stopper slot on the press strip main body; Perhaps the press strip main body is provided with and limits the stopper slot of compressing tablet around the bearing pin anglec of rotation, and the compressing tablet rear end is provided with stop screw or the spacer pin that penetrates this stopper slot.

9. three button stay sewing machines according to claim 4, it is characterized in that: described machine plate comprises fixing machine plate and movable machine plate, described fixing machine plate is fixedlyed connected with frame, described movable machine plate is fixedlyed connected with head, and movable machine plate is provided with the fairlead corresponding with the Sewing needles size and location; Described fixing machine plate is provided with laminate, and described laminate is connected with the fixing machine plate by the activity adjusting device.

10. according to the described button stay sewing machines of claim 9, it is characterized in that: described activity adjusting device comprises the mounting bar that is fixed on fixing machine plate bottom by screw, is reserved with the radiai adjustment space between installing hole on the mounting bar and the screw; Described laminate is provided with counterbore, the fixing machine plate machine corresponding with counterbore is provided with unthreaded hole, sunk screw is threaded with mounting bar after passing described counterbore and unthreaded hole, leaves the gap between described unthreaded hole and the sunk screw, the sizableness in this gap and above-mentioned radiai adjustment space.

11. according to the described button stay sewing machines of claim 10, it is characterized in that: described fixing machine plate bottom is fixedly connected with mount pad, mounting bar is fixed on the mount pad bottom by screw, and the position corresponding with counterbore is provided with and the suitable through hole of fixing machine plate glazing bore dia on the mount pad.

12. three button stay sewing machines according to claim 4, it is characterized in that: described eedle rear side is established the presser feet installing rack, divide the presser feet that is located at the eedle left and right sides to be articulated on the presser feet installing rack by bearing pin, the rear side of presser feet installing rack is provided with location-plate, is provided with extension spring between the rear end of presser feet and the location-plate.

13. three button stay sewing machines according to claim 4, it is characterized in that: described frame is provided with the independent cutter of installing, described cutter comprises the cutter motor that is electrically connected with controller, cutter motor is fixed on the motor flange, the output shaft of cutter motor is connected with eccentric wheel, and eccentric wheel links to each other with two parallel optical axis by the duplex bearing device, and two optical axises are sleeved in the linear bearing, article two, the other end of optical axis links to each other with cutoff knife rack, and cutting knife is fixed on the cutoff knife rack; Linear bearing is fixed on the cutting knife mount pad, also is provided with cylinder on the cutting knife mount pad, and the piston rod of cylinder is connected with motor flange.

14. three button stay sewing machines according to claim 4, it is characterized in that: described frame is provided with cloth puller, described cloth puller comprises the mount pad that is connected with frame, end away from frame on the mount pad is articulated with arm, and the cylinder body of granny rag cylinder and the axis of the piston articulate with an end and the arm of mount pad near frame respectively; The upper end of arm is provided with the folder cloth pulling shaft that is sleeved in the folder cloth circular shaft, and folder cloth cylinder be arranged in parallel with folder cloth circular shaft, and folder cloth circular shaft is set with outward and presss from both sides the folder cloth cylinder block that cloth cylinder cylinder body is fixedlyed connected, and folder cloth cylinder block is fixedlyed connected with arm; The axis of the piston of described folder cloth cylinder is connected with folder cloth presser feet seat, and the front end of folder cloth presser feet seat is hinged with two folder cloth presser feets up and down, and the hinged end of two folder cloth presser feets is respectively equipped with the projection towards relative folder cloth presser feet, and the other end of folder cloth presser feet is provided with folder cloth optical axis; Part between folder cloth presser feet seat two folder cloth presser feets is provided with holds the unthreaded hole that folder cloth pulling shaft passes, the front end of described folder cloth optical axis is provided with and described projection corresponding groove, projection is contained in the groove, and the rear end of folder cloth optical axis is provided with the block of external diameter greater than folder cloth circular shaft.

15. three button stay sewing machines according to claim 14 is characterized in that: the rear end of described folder cloth optical axis is provided with screw thread, is connected with the pre-angle of release degree of folder cloth presser feet adjusting nut on the screw thread; Described adjusting nut is between block and folder cloth circular shaft, and its external diameter is less than the external diameter of folder cloth circular shaft; Be provided with the compression spring between described folder cloth pulling shaft and the folder cloth circular shaft.

16. three button stay sewing machines according to claim 14 is characterized in that: described block is the adjusting nut of adjustable clamp cloth presser feet folder cloth thickness.

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