TWI779485B - Pattern sewing machine with a rotary head and the sewing method - Google Patents

Abstract

The present invention relates to a pattern sewing machine with a rotary head, which can use a sewing method to sew in a high speed. The pattern sewing machine with a rotary head comprises a sewing head, a sewing head rotating mechanism, a feeding mechanism and a controller. A needle bar and a swing mechanism is assembled in the sewing head, and the needle bar is swung by the swing mechanism. The sewing head is rotated by the sewing head rotating mechanism, the sewing material is moved by the feeding mechanism, and the swing direction of the needle bar is controlled by the controller for swinging in the same direction with the move direction of sewing material. Wherein, the controller changes the move direction through the feeding mechanism. Meanwhile, the controller changes the swing direction of the needle bar through controlling the sewing head to rotate by the sewing head rotational mechanism, so the changed sway direction will be the same with the changed move direction of sewing material. Therefore, the pattern sewing machine with a rotary head can raise the working efficiency of sewing by reducing the pause time of feeding mechanism.

Description

Rotary head pattern sewing machine and its sewing method

The invention relates to a rotary head pattern sewing machine capable of controlling the rotation of the headstock and its sewing method, in particular to a rotary head pattern sewing machine capable of simultaneously controlling the rotation of the headstock, controlling the swing of the needle bar and controlling the moving direction of the sewing object and the sewing method thereof The method is to keep the swinging direction of the needle bar consistent with the moving direction of the sewing object when the rotary head pattern sewing machine is sewing the sewing object.

With the evolution of sewing machine automation and high speed, industrial sewing machines not only have the effect of saving manpower and increasing production, but also include models with corresponding functions developed for various purposes. Therefore, there is currently a single machine in the market. Needle rotary head pattern sewing machine, and the single needle rotary head pattern sewing machine can rotate the direction of the needle and the hook along the sewing path, so as to simulate the sewing method of turning the sewing object in the process of manual operation of the traditional sewing machine, and then form it on the machine The sewing stitches of the sewing products can maintain a consistent appearance.

Please refer to Fig. 1A and Fig. 1B, a headstock 81 and a headstock steering mechanism 82 are arranged on the top of the single-needle rotary head pattern sewing machine 80, and the single-needle rotary head pattern sewing machine 80 is provided with a kettle shaft below the headstock steering mechanism 82. Table steering mechanism 83 and a feeding mechanism 84, wherein, the headstock 81 is equipped with a needle bar 811 that can move up and down along the Z axis and a machine needle 812 connected to the needle bar 811, and the headstock steering mechanism 82 can drive the headstock 81 to The Z axis rotates as the axis, so that the needle bar 811 and the machine needle 812 rotate together, and when the headstock 81 rotates, the kettle shaft table steering mechanism 83 simultaneously drives a needle plate 85 and a hook 86 with the Z axis as the axis In addition, the feeding mechanism 84 drives a sewing object 87 to move along the X-axis direction and the Y-axis direction in the drawing through the clamp, thereby, the steering mechanism 82 of the headstock, the steering mechanism 83 of the kettle shaft table and the The feeding mechanism 84 and the three cooperate with each other and can form a sewing stitch on the sewing object 87 according to the sewing pattern, and then can replace the traditional manual operation sewing machine. need.

As shown in the figure, when the single-needle rotary head pattern sewing machine 80 is sewing the sewing object 87, the needle 812 of the headstock 81 will penetrate the sewing object 87, so that an upper thread 813 mounted on the needle 812 It can be interwoven with a bottom thread 861 installed on the hook 86. However, when the needle 812 penetrates the sewing object 87, the feeding mechanism 84 must temporarily stop driving the sewing object 87 or reduce the moving speed of the driving sewing object 87. Otherwise, the feeding mechanism 84 will continue to drive the sewing object 87 to move along the X-axis direction and the Y-axis direction, so that when the needle bar 811 penetrates the sewing object 87, the sewing object 87 will be pulled by the needle 812 through the feeding mechanism 84 , causing the needle 812 to be bent and deformed by the moving sewing object 87, so that the needle 812 is damaged or the sewing object 87 is formed with a perforation with an excessively large aperture, so that the sewing object 87 becomes a defective product.

In order to prevent the needle 812 from being excessively stretched and deformed by the moving sewing object 87, when the single-needle rotary head pattern sewing machine 80 sews the sewing object 87, the feeding mechanism 84 will move when the needle 812 penetrates the fabric. Reduce the moving speed of the sewing object 87, or allow the feeding mechanism 84 to intermittently drive the sewing object 87 to move horizontally, so that when the needle 812 penetrates the sewing object 87, the feeding mechanism 84 stops driving the sewing object 87 Horizontal movement, and when the machine needle 812 is pulled out from the sewing object 87, the feeding mechanism 84 starts to drive the sewing object 87 to move horizontally, although the feeding mechanism 84 intermittently drives the sewing object 87 to move horizontally. The needle 812 is bent and deformed by the moving sewing object 87, but it will limit the moving frequency of the sewing object 87 driven by the feeding mechanism 84. In other words, it will reduce the working efficiency of the single-needle rotary head pattern sewing machine 80 for sewing the sewing object 87 , or, in order to improve the working efficiency of the single-needle rotary head pattern sewing machine 80 for sewing the sewing object 87, the feeding mechanism 84 continuously drives the sewing object 87 to move when the needle 812 penetrates the cloth, and this sewing method, The single-needle rotary head pattern sewing machine 80 can only perform sewing operations on thinner or softer sewing objects 87 (such as thin cloth), so that the application range of the single-needle rotary head pattern sewing machine 80 will be limited.

The main purpose of the present invention is to change the movement mode of the needle bar according to the movement mode of the sewing object, so that the needle bar can not only move up and down along the Z axis, but also swing horizontally, so that the needle After running through the sewing object, the needle bar can drive the needle to swing while the sewing object is moving horizontally, so that the sewing object will not pull the needle excessively during the movement so that the needle will not be deformed, resulting in Improving the moving speed of the sewing object driven by the feeding mechanism can relatively increase the speed of the needle bar moving up and down.

The secondary purpose of the present invention is to keep the moving speed of the sewing object driven by the feeding mechanism uniform, or to reduce the speed change rate of the intermittent driving of the sewing object, so that the working efficiency of the rotary head pattern sewing machine for sewing the sewing object can be effectively improved , and can even expand the application range of the rotary head pattern sewing machine, so that the rotary head pattern sewing machine can not only sew thinner or softer sewing materials, but also sew thicker sewing materials (such as leather ) or hard sewing materials.

In order to achieve the above-mentioned purpose, the present invention provides a rotary head pattern sewing machine, the rotary head pattern sewing machine can perform sewing operation on a sewing object, and includes: a headstock, a headstock steering mechanism, a feeding mechanism and a controller, the above-mentioned The headstock has a needle bar mechanism and a swing mechanism. The needle bar mechanism has a needle bar drive source and a needle bar that can move up and down through the needle bar drive source. The above swing mechanism has a needle bar connected to the needle bar. The needle bar base and a swing driving source capable of driving the needle bar base to swing back and forth.

The steering mechanism of the above-mentioned headstock can drive the above-mentioned headstock to rotate around the Z axis, so that the above-mentioned needle bar mechanism and the swing mechanism can rotate together, and the above-mentioned feeding mechanism has a function that can drive the above-mentioned sewing object to move along the X-axis direction. The X-axis feeding unit and a Y-axis feeding unit that can drive the sewing object to move along the Y-axis direction, however, the controller is electrically connected to the needle bar mechanism, the swing mechanism, the head steering mechanism and the feeding mechanism.

Wherein, the above-mentioned controller controls the above-mentioned feeding mechanism to drive the above-mentioned sewing object to move, and at the same time, the above-mentioned controller controls the above-mentioned swing mechanism to make the swinging direction of the above-mentioned needle bar the same as the moving direction of the above-mentioned sewing object, wherein the above-mentioned controller can Control the above-mentioned feeding mechanism to change the moving direction of the above-mentioned sewing object. At the same time, the above-mentioned controller controls the steering mechanism of the above-mentioned headstock to drive the above-mentioned headstock to rotate. The changed swinging direction of the rod and the changed moving direction of the sewing object can be consistent.

In this embodiment, when the above-mentioned controller controls the above-mentioned feeding mechanism to drive the above-mentioned sewing object to move, the above-mentioned controller simultaneously controls the above-mentioned swinging mechanism to drive the above-mentioned needle bar to swing, so that a machine needle installed on the above-mentioned needle bar is penetrating During the process of sewing the above-mentioned objects, it can move synchronously with the above-mentioned sewing objects.

In addition, the swing mechanism is further provided with a swing transmission unit between the needle bar base and the swing drive source, and the swing transmission unit has a swing arm connected to the swing drive source, a swing member connected to the needle bar base, and A swing connecting rod is provided between the above-mentioned swing arm and the swing member, and the above-mentioned swing drive source can drive the above-mentioned swing arm to rotate so as to drive the above-mentioned swing member to swing.

In addition, the headstock is equipped with an inner presser foot mechanism. The inner presser foot mechanism has an inner presser foot transmission unit and an inner presser foot parallel to the needle bar. The inner presser foot transmission unit can drive the inner presser foot to move up and down. , and the above-mentioned inner presser foot is connected to the above-mentioned needle bar seat, so that both the above-mentioned needle bar and the inner presser foot can reciprocate and swing synchronously.

Wherein, the above-mentioned rotating head pattern sewing machine further has a base under the above-mentioned headstock and a steering mechanism of the kettle shaft table installed on the above-mentioned base, and the above-mentioned base is equipped with a rotating seat capable of rotating and a hook connected to the above-mentioned rotating seat , and the above-mentioned still axle table steering mechanism is electrically connected to the above-mentioned controller. When the above-mentioned headstock is rotating, the above-mentioned controller simultaneously controls the above-mentioned kettle axle table steering mechanism to drive the above-mentioned rotating seat to rotate in the same direction with the Z axis as the axis.

Moreover, the present invention further provides a sewing method, the sewing method includes: a data acquisition step, obtaining a sewing path, and the sewing path has a plurality of sewing points at different positions, and according to the plurality of sewing points And form a plurality of seam distances representing the distance between the above-mentioned two sewing points and a plurality of steering instructions representing the steering range of the above-mentioned headstock; in a moving step, the above-mentioned feeding mechanism is driven according to one of the above-mentioned sewing points of the above-mentioned sewing path The above-mentioned sewing object moves along the above-mentioned sewing path; in the first sewing step, the above-mentioned needle bar drive source drives the above-mentioned needle bar to reciprocate along the Z-axis direction, and at the same time, the above-mentioned oscillating drive source drives the above-mentioned needle bar according to the above-mentioned sewing order reciprocating swing at a distance, so that the swinging direction of the above-mentioned needle bar can be the same as the moving direction of the above-mentioned sewing object; in a turning step, the steering mechanism of the above-mentioned headstock drives the above-mentioned headstock to rotate according to the above-mentioned steering command, so that the swinging direction of the above-mentioned needle bar can be change; and a moving step again, the above-mentioned feeding mechanism drives the above-mentioned sewing object to move in different directions according to another above-mentioned sewing point of the above-mentioned sewing path, so that the moving direction of the above-mentioned sewing object can be changed, so that the above-mentioned needle The changed swinging direction of the rod and the changed moving direction of the sewing object can be consistent.

Wherein, the above-mentioned data obtaining step further obtains a desired sewing pattern and a set stitch distance, the curve of the above-mentioned desired sewing pattern forms the above-mentioned sewing path, and the above-mentioned desired sewing pattern forms the above-mentioned complex number through the above-mentioned set stitch distance. Sewing points, and each of the above-mentioned sewing points has a coordinate command, in this embodiment, every two adjacent above-mentioned sewing points form the above-mentioned steering command according to the respective above-mentioned coordinate commands.

The feature of the present invention is that the rotary head pattern sewing machine is equipped with a swing mechanism, and the swing mechanism can drive the needle bar to swing, so that the needle bar can not only be driven by the upper shaft to move up and down, but the needle bar can also be driven by the swing mechanism at the same time And it can swing in the horizontal direction, so that after the needle penetrates the sewing object, the needle bar can swing in the horizontal direction while the sewing object is moving horizontally, so that the sewing object will not be pulled during the movement The machine needle deforms the shape of the machine needle, which can increase the service life of the machine needle.

In addition, when the controller controls the head steering mechanism to drive the head to rotate, the rotating head can drive the swing mechanism to rotate at the same time, so that the swing direction of the needle bar can be changed, and the controller can also control the feeding mechanism at the same time to feed materials through the X-axis unit and the Y-axis feeding unit to change the moving direction of the sewing object, and then no matter how the sewing object moves in any way, the changed direction of the needle bar swing and the changed moving direction of the sewing object can be kept consistent, thereby, The moving speed of the sewing material driven by the feeding mechanism can be effectively improved, so that the sewing work efficiency of the rotary head pattern sewing machine can be effectively improved, and even the application range of the rotary head pattern sewing machine can be expanded, so that the rotary head pattern sewing machine is suitable for sewing thickness. Thick or hard materials are sewn.

In order to further have a clearer and more detailed understanding and understanding of the structure, use and features of the present invention, preferred embodiments are given, and the details are as follows in conjunction with the drawings:

In this drawing, the two sides of the X axis refer to the left and right sides of the operator facing the rotary head pattern sewing machine 1 of the present invention, and the two sides of the Y axis refer to the front and rear sides of the operator facing the rotary head pattern sewing machine 1 of the present invention. As for the two sides of the Z axis, it refers to the upper and lower sides of the rotary head pattern sewing machine 1 facing the operator of the present invention, and in this case specification, "left", "right", "front", "rear", "upper" , "down" and other directional words refer to the direction in which the sewing machine operator faces the rotary head pattern sewing machine 1 of the present invention.

Please refer to Fig. 2 and Fig. 3, in the first preferred embodiment, the rotary head pattern sewing machine 1 of the present invention mainly consists of a sewing machine body 10, a head steering mechanism 20, a feeding mechanism 30 and a still shaft table steering mechanism 40 and a controller 50 (as shown in Figure 9), the sewing machine body 10 is provided with a headstock 11, a pillar 12 and a base 13 three parts, please refer to Figure 3 and shown in Figure 4, the inside of the headstock 11 is provided with a Needle bar mechanism 14, an inner presser foot mechanism 15 and a swing mechanism 16, wherein the needle bar mechanism 14 has a needle bar driving unit 141 connected to the headstock 11 and a needle bar actuating unit 142 connected to the needle bar driving unit 141 , in this embodiment, the needle bar driving unit 141 has a needle bar driving source 141a capable of generating rotational power and an upper shaft 141b capable of rotating relative to the headstock 11, the needle bar driving source 141a is fixed on the headstock 11, and , the needle bar drive source 141a assembles a first needle bar pulley 141c, and the first needle bar pulley 141c is equipped with a needle bar drive belt 141d to be connected to a second needle bar pulley 141e connected to the upper shaft 141b, so that the needle bar The driving source 141a can drive the upper shaft 141b to rotate through the first needle bar pulley 141c, the needle bar transmission belt 141d and the second needle bar pulley 141e, wherein the upper shaft 141b is horizontally arranged on the headstock 11, and the upper shaft 141b is located close to A crankshaft connecting rod 141 f is disposed above the needle bar actuating unit 142 to connect to the needle bar actuating unit 142 .

As shown in the figure, the needle bar actuating unit 142 has a needle bar 142a capable of moving up and down and a machine needle 142b assembled on the needle bar 142a, the needle bar 142a is vertically arranged on the upper shaft 141b of the needle bar drive unit 141, and, The needle bar 142a is connected to the crank shaft connecting rod 141f of the needle bar driving unit 141, so that the upper shaft 141b drives the needle bar 142a and the machine needle 142b to move up and down along the Z axis through the needle bar driving source 141a. In addition, the internal pressure The foot mechanism 15 has an inner presser foot 151 arranged parallel to the needle bar 142a, and the inner presser foot 151 is connected to the upper shaft 141b through an inner presser foot transmission unit 152, so that the needle bar driving source 141a drives the upper shaft 141b to rotate , the inner presser foot transmission unit 152 can drive the inner presser foot 151 to move up and down.

5A and 5B, the swing mechanism 16 is connected to the headstock 11. In this embodiment, the swing mechanism 16 has a swing drive source 161 fixed to the headstock 11, and a needle bar that can swing relative to the headstock 11. Seat 162 and a swing transmission unit 163 between the swing drive source 161 and the needle bar base 162. The swing drive source 161 has a rotating shaft 161a that can generate rotational power, and the rotating shaft 161a is parallel to the top of the needle bar mechanism 14. Shaft 141b, wherein the needle bar seat 162 has a connecting portion 162a connected to the swing driving source 161 and a needle bar piercing portion 162b formed at the lower end of the connecting portion 162a, and the needle bar piercing portion 162b is connected to the needle bar mechanism at the same time The needle bar 142a of 14 and the inner presser foot 151 of the inner presser foot mechanism 15, in this embodiment, the needle bar piercing part 162b forms an accommodating space 162c, wherein, the needle bar 142a is installed with a seat inside the accommodating space 162c The needle bar limit block 142c, the inner presser foot 151 is equipped with an inner presser foot limit block 153 inside the accommodating space 162c, so that the needle bar 142a and the inner presser foot 151 are respectively subjected to the needle bar limit block 142c and internal pressure. The foot limit block 153 is driven to move up and down. As shown in the figure, the swing transmission unit 163 has three parts: a swing arm 163a, a swing link 163b and a swing member 163c. One end of the swing arm 163a is fixed on the rotating shaft 161a, And the swing arm 163a is pivotally connected to the swing link 163b at one end away from the rotating shaft 161a, yet, the opposite ends of the swing member 163c are respectively connected to the swing link 163b and the needle bar holder 162, so that the swing member 163c is positioned at the swing link. Between the rod 163b and the needle bar seat 162, in this embodiment, the swing member 163c is provided with a swing arm 163c1 pivotally connected to the swing link 163b and a swing shaft 163c2 connected to the swing arm 163c1, and the swing arm 163c1 is locked on The swing axis 163c2 is parallel to the upper shaft 141b of the needle bar mechanism 14, and the swing axis 163c2 is substantially perpendicular to the swing arm 163c1.

6A and 6B, the swing driving source 161 rotates, so that the swing arm 163a of the swing transmission unit 163 can rotate synchronously, so that a pivot point 164 formed between the swing arm 163a and the swing link 163b Can move around the rotation axis 161a, when the swing arm 163a rotates, the needle bar seat 162 can simultaneously drive the needle bar 142a of the needle bar mechanism 14 and the inner presser foot 151 of the inner presser foot mechanism 15 along a direction perpendicular to the swing axis 163c2 swing back and forth in the direction of the swing arm 163a, because the swing arm 163a is approximately perpendicular to the swing link 163b, the swing link 163b is approximately perpendicular to the swing arm 163c1, and the length of the swing arm 163a is much smaller than the length of the swing arm 163c1, so that the needle bar holder 162 The angle of rotation is much smaller than the required rotation angle of the rotating shaft 161a. Therefore, the torque required by the swing driving source 161 is much smaller than the required swing torque of the needle bar holder 162, and a smaller swing driving source 161 can be selected.

Referring to Fig. 2 again, the pillar 12 of the sewing machine body 10 is connected to the base 13 of the sewing machine body 10, and the base 13 is provided with a rotating seat 17 at an end away from the pillar 12, as shown in Fig. 7 and Fig. 8, the base 13 A hook mechanism 18 consisting of a hook driving unit 181 and a hook actuating unit 182 is installed in the interior of the rotary seat 17, and a still shaft table 171 is arranged inside the rotary seat 17, and a needle plate is installed above the rotary seat 17. 172, and the needle plate 172 is provided with a pair of needle holes 172a located at the machine needle 142b. In this embodiment, the extension direction of the needle holes 172a corresponds to the swing direction of the needle bar 142a. As shown in the figure, the hook drive unit 181 has A rotary hook drive source 181a capable of generating rotational power and a lower shaft 181b capable of rotating relative to the rotary base 17, the rotary hook drive source 181a is fixed on the rotary base 17, and the rotary hook drive source 181a is connected to a The first rotary hook pulley 181c outside the rotary base 17, and one end of the lower shaft 181b is connected to a second rotary hook pulley 181d that is pivotally connected to the rotary base 17, wherein the first rotary hook pulley 181c is connected to the second rotary hook pulley. Both pulleys 181d assemble a rotary hook drive belt 181e together, so that the rotary hook drive source 181a can drive the lower shaft 181b to rotate through the first rotary hook pulley 181c, the rotary hook drive belt 181e and the second rotary hook pulley 181d. However, The lower shaft 181b is horizontally disposed on the base 13 , and the end of the lower shaft 181b away from the second hook pulley 181d penetrates into the interior of the kettle shaft block 171 to be assembled with the hook action unit 182 .

As shown in the figure, the rotary hook actuating unit 182 of the rotary hook mechanism 18 has a vertically arranged kettle shaft 182a, the kettle shaft 182a is pivotally connected to the kettle shaft platform 171, and the upper end of the kettle shaft 182a is connected to a rotary hook 182b, and, The lower end of the kettle shaft 182a is provided with a bevel gear set 182c located inside the kettle shaft platform 171 to be connected to the lower shaft 181b of the hook drive unit 181, so that the hook drive source 181a of the hook drive unit 181 drives the hook drive unit 181 When the lower shaft 181b rotates, the lower shaft 181b can drive the hook 182b to rotate around the kettle shaft 182a via the bevel gear set 182c.

Please refer to Fig. 3 again, the headstock steering mechanism 20 is located between the headstock 11 of the sewing machine body 10 and the pillar 12 of the sewing machine body 10, so that the headstock 11 is connected to the pillar 12 via the headstock steering mechanism 20, wherein the headstock steering mechanism 20 It has a head gear box 21 fixed on the pillar 12 and a head drive source 22 assembled in the head gear box 21. As shown in the figure, the head gear box 21 is connected to the head gear 11 through a head rotation column 23 that is hollow. and the headstock drive source 22 can drive the headstock 11 to rotate around a rotation axis L in a vertical state through the headstock gear box 21, so that the headstock 11 can rotate relative to the pillar 12, and when the headstock 11 rotates When rotating, the needle bar mechanism 14, the inner presser foot mechanism 15 and the swing mechanism 16 all rotate synchronously with the headstock 11. In this embodiment, the rotation axis L is parallel to the Z axis.

As shown in Figure 2, the feeding mechanism 30 is installed on the base 13 of the sewing machine body 10, wherein the feeding mechanism 30 has an X-axis feeding unit 31 that can move along the X-axis direction and a X-axis feeding unit that can move along the Y-axis direction. The Y-axis feeding unit 32, in this embodiment, the X-axis feeding unit 31 assembles a fixture unit 33, and the Y-axis feeding unit 32 is loaded with the X-axis feeding unit 31, so that the Y-axis feeding unit 32 can drive the X-axis feeding Both the unit 31 and the clamp unit 33 can move along the Y axis relative to the base 13 .

Please refer to Fig. 8, the still shaft table steering mechanism 40 has a still shaft table gear box 41 on the lower rotating seat 17 and a still shaft table driving source 42 assembled on the still shaft table gear box 41, as shown in the figure , the top of the still shaft table gear box 41 is provided with a still shaft table rotating column 43 to connect to the rotating seat 17, and the still shaft table driving source 42 can drive the rotating seat 17 through the still shaft table gear box 41 with the rotation axis L as the axis The center rotates so that the rotating seat 17 can rotate relative to the base 13, and when the rotating seat 17 rotates, the hook mechanism 18 rotates synchronously with the headstock 11 of the sewing machine body 10. In this embodiment, when the headstock steering mechanism When 20 drives the headstock 11 of the sewing machine body 10 to rotate, the still shaft table steering mechanism 40 will also drive the rotating seat 17 to rotate at the same time, and the rotation axis L overlaps the axis of the still shaft table rotating column 43 .

Please refer to FIG. 9, the controller 50 is electrically connected to the needle bar mechanism 14, the swing mechanism 16, the head steering mechanism 20, the feeding mechanism 30 and the kettle shaft table steering mechanism 40, and the controller 50 can control the needle bar mechanism 14. The needle bar drive source 141a is operated, the rotating shaft 161a of the swing mechanism 16 is controlled to operate, the head drive source 22 of the head steering mechanism 20 is controlled to operate, and the X and Y axis feeding units 31 and 32 of the feeding mechanism 30 are controlled to move horizontally Operate with the pedestal drive source 42 that controls the pedestal steering mechanism 40 .

Please refer to Fig. 10 and Fig. 11, in actual application, the rotary head pattern sewing machine 1 uses a sewing method F to carry out the sewing operation on a sewn object 60 (as shown in Fig. 12 ), firstly, a data acquisition is performed In step S1, the operator inputs a desired sewing pattern representing the shape and pattern and a set stitch distance representing the stitch length to the controller 50, and the controller 50 forms a sewing path according to the curve of the desired sewing pattern 70, and, the controller 50 calculates and forms a plurality of sewing points 71 through the curve of the desired sewing pattern and the set sewing distance, and the plurality of sewing points 71 are arranged at intervals along the sewing path 70, so that each The positions of each sewing point 71 are different. In this embodiment, each sewing point 71 has a coordinate instruction representing the position of the sewing point 71 and a steering instruction representing the rotation range of the headstock 11, and every two sewing points A seam distance 72 is formed between the seam points 71 through respective coordinate instructions, which already indicates the distance between two sewing points 71, wherein, each two seam points 71 form the above-mentioned Steering command, whereby the sewing path 70 contains a plurality of sewing points 71, a plurality of sewing distances 72, a plurality of the above-mentioned coordinate commands and a plurality of the above-mentioned steering commands. However, the above-mentioned desired sewing pattern and the set sewing distance Input to the controller 50 to form the sewing path 70 is only for convenience of explanation, that is, the operator can draw and form the above-mentioned desired sewing pattern through an external computer, and input the above-mentioned set stitch distance to the above-mentioned external computer of the controller, Make the above-mentioned external computer form the sewing path 70 through the above-mentioned desired sewing pattern and the set sewing distance, and then, the operator will include a plurality of sewing points 71, a plurality of sewing distances 72, a plurality of the above-mentioned coordinate commands and The sewing paths 70 of the plurality of above-mentioned steering commands are directly input to the controller 50 .

Please refer to FIG. 10 and FIG. 12, when the controller 50 has the sewing path 70, the controller 50 controls the X, Y of the feeding mechanism 30 according to the above-mentioned coordinate command of the first sewing point 71 of the sewing path 70. The axis feeding units 31, 32 drive the sewing object 60 to move horizontally, so that the sewing object 60 can move along a first direction D1 parallel to the X axis through the X and Y axis feeding units 31, 32, so that the sewing object 60 can The sewing object 60 moves to the left below the needle bar 142a of the needle bar mechanism 14, thereby completing a moving step S2. In this embodiment, the turning command of the first sewing point 71 is to represent the headstock of the sewing machine body 10 11 There is no need to turn, so that before the sewing object 60 moves along the first direction D1, the headstock steering mechanism 20 does not drive the headstock 11 to rotate. However, the first direction D1 is parallel to the X-axis only for convenience of explanation, that is, the first A direction D1 can be parallel to the Y axis or inclined to both the X axis and the Y axis.

Please refer to Figure 10 and Figure 13A, when the controller 50 executes the moving step S2, the controller 50 simultaneously performs a sewing step S3, when the feeding mechanism 30 drives the sewing object 60 to move horizontally along the first direction D1 , the controller 50 controls the needle bar driving source 141a of the needle bar mechanism 14 and the rotating shaft 161a of the rocking mechanism 16 according to the seam distance 72 between the first sewing point 71 and the second sewing point 71. Rotate so that the needle bar 142a of the needle bar mechanism 14 changes from a parallel state A1 parallel to the Z axis to a first inclined state A2 not parallel to the Z axis, so that the upper shaft 141b of the needle bar mechanism 14 can drive the needle bar mechanism The needle bar 142a of 14 is obliquely close to the sewing object 60 along the direction inclined to the Z axis, and then the machine needle 142b of the needle bar mechanism 14 obliquely penetrates the sewing object 60, so that the sewing object 60 forms a through-machine needle The through hole (not shown) formed by 142b, as shown in FIG. 13B , when the needle 142b penetrates the sewing object 60, the controller 50 continues to follow the coordinates of one of the sewing points 71 of the sewing path 70 command to control the X-axis and Y-axis feeding units 31, 32 of the feeding mechanism 30 to drive the sewing object 60 to move along the first direction D1, and the controller 50 continues to control the swing driving source 161 of the swing mechanism 16 to rotate. At this time, The swing axis 163c2 of the swing mechanism 16 is perpendicular to the first direction D1, so that the swing drive source 161 can drive the needle bar holder 162 of the swing mechanism 16 to swing left and right along the first direction D1 through the swing axis 163c2, so that the needle bar holder 162 can simultaneously Drive the needle bar 142a of the needle bar mechanism 14 and the inner presser foot 151 of the inner presser foot mechanism 15 to swing along the first direction D1, and then the needle bar 142a sequentially changes from the first inclined state A2 to the parallel state A1 and A second tilted state A3 opposite to the first tilted state A2, wherein, when the needle bar 142a assumes the second tilted state A3, the upper shaft 141b can drive the needle bar 142a obliquely away from the car along the direction inclined to the Z axis For the sewing object 60, the machine needle 142b is obliquely separated from the sewing object 60, wherein, when the machine needle 142b penetrates the sewing object 60, the feeding mechanism 30 continues to drive the sewing object 60 to move, and the sewing object 60 The moving speed of the through hole on the top will be roughly close to the moving speed of the sewing object 60, therefore, the moving sewing object 60 will not generate excessive lateral force on the machine needle 142b, so that even if the machine needle 142b is subjected to sewing The impact of the lateral force of the object 60 without bending deformation.

Please refer to FIG. 14 , next, the controller 50 performs the moving step S2 and the sewing step S3 simultaneously again, so that the controller 50 controls the feeding mechanism according to the above-mentioned coordinate command of the second sewing point 71 of the sewing path 70 The X and Y axis feeding units 31 and 32 of 30 drive the sewing object 60 to move horizontally. In this embodiment, the steering command of the second sewing point 71 also means that the headstock 11 does not need to turn, so that the swing mechanism 16 The swing axis 163c2 of the needle bar mechanism 14 presents a state perpendicular to the first direction D1, so that the feeding mechanism 30 still drives the sewing object 60 to move along the first direction D1, and the needle 142b of the needle bar mechanism 14 penetrates obliquely through the sewing object 60, and the controller 50 controls the needle bar seat 162 of the rocking mechanism 16 to swing through the sewing distance 72 between the second sewing point 71 and the third sewing point 71, so that the needle After 142b leaves the sewing object 60, a seam 61 parallel to the first direction D1 can be formed on the surface of the sewing object 60. In this embodiment, the rocking axis 163c2 of the rocking member 163c is parallel to the Y axis, and the needle bar seat When 162 is oscillating along the first direction D1, both the needle 142b and the inner presser 151 are oscillating left and right along the X axis.

Please refer to FIG. 10 and FIG. 15 , when the controller 50 is executing the process of completing the third to tenth sewing points 71 of the sewing path 70 , due to the steering instructions of the third to tenth sewing points 71 It also means that the headstock 11 does not need to turn, so that the sewing object 60 moves along the first direction D1 through the feeding mechanism 30, and then the sewing object 60 is formed with a plurality of seams 61 parallel to the first direction D1, And when the controller 50 will execute the eleventh sewing point 71, because the turning instruction of the eleventh sewing point 71 represents that the headstock 11 of the sewing machine body 10 will rotate counterclockwise, and then begin to carry out a turning step S4, control The device 50 controls the head drive source 22 of the head steering mechanism 20 to generate rotational power according to the steering command of the eleventh sewing point 71, so that the head drive source 22 drives the head 11 of the sewing machine body 10 to rotate around the rotation axis L. Let the needle bar mechanism 14, the inner presser foot mechanism 15 and the swing mechanism 16 rotate with the headstock 11 at the same time, so that the swing axis 163c2 of the swing member 163c changes from being perpendicular to the first direction D1 to being inclined to the X axis at the same time and the state of the Y axis, and then change the swing direction of the needle bar base 162 of the swing mechanism 16, so that the swing direction of the needle bar base 162 is changed from the first direction D1 to the second direction D2 different from the first direction D1, and then the needle The bar base 162 can swing back and forth along the second direction D2, so that both the machine needle 142b of the needle bar mechanism 14 and the inner presser foot 151 of the inner presser foot mechanism 15 move along a direction inclined to both the X axis and the Y axis. Swing, at the same time, controller 50 also generates rotational power according to the above-mentioned steering command and the still shaft table driving source 42 of the still shaft table steering mechanism 40, so that the still shaft table driving source 42 drives the rotating seat 17 to rotate, and then the rotating seat 17 is relatively The base 13 of the sewing machine body 10 rotates around the rotation axis L, so that the rotary hook mechanism 18 and the rotary seat 17 are rotated synchronously with the headstock 11. However, the second direction D2 is inclined to the X axis and the Y axis at the same time only for convenience of illustration. For this purpose, that is, as long as the second direction D2 is different from the first direction D1.

As shown in FIG. 10 , during the process of the turning step S4 by the controller 50, the controller 50 simultaneously performs a re-moving step S5. command to control the feeding mechanism 30, so that the X-axis feeding unit 31 and the Y-axis feeding unit 32 cooperate with each other to change the moving direction of the sewing object 60, so that the sewing object 60 passes through the feeding mechanism 30 and moves along the second direction D2 At this time, a second sewing step S6 is performed, the controller 50 controls the needle bar drive source 141 of the needle bar mechanism 14 to drive the needle 142b of the needle bar mechanism 14 to penetrate the sewing object 60, and the controller 50 passes through the The seam distance 72 between the eleventh sewing point 71 and the twelfth sewing point 71 controls the needle bar seat 162 of the rocking mechanism 16 to swing, so that the surface of the sewing object 60 is formed to be parallel to the second The sewing mesh 61 in the direction D2, whereby, after the head 11 of the sewing machine body 10 rotates, the swinging direction of the needle bar 142a can also keep consistent with the moving direction of the sewing object 60 .

However, in the first preferred embodiment, the needle bar 142a of the needle bar mechanism 14 can swing along the first direction D1 or the second direction D2 and the sewing object 60 can move along the first direction D1 through the feeding mechanism 30 Or the movement in the second direction D2 is only for convenience of explanation, that is, the controller 50 can change the rotation range of the headstock 11 of the sewing machine body 10 according to the steering commands of different sewing points 71, so that the needle bar of the needle bar mechanism 14 142a can swing along other directions different from the first and second directions D1 and D2, relatively allowing the feeding mechanism 30 to also move along other directions different from the first and second directions D1 and D2.

Please refer to Fig. 16 and Fig. 17, in the second preferred embodiment, the difference from the first preferred embodiment is that the needle 142b, the needle hole 172a and the rotary hook actuating unit 182 form a circle symmetrical to the rotation axis L. Double-needle type, as shown in the figure, the needle bar 142a of the needle bar actuating unit 142 is installed with a machine needle seat 142d close to the needle hole 172a, and the machine needle seat 142d is connected to two machine needles 142b arranged at intervals from each other, and the needle plate 172 is formed with two pinholes 172a corresponding to the machine needle 142b, and two hook actuating units 182 are connected to the lower shaft 181b of the hook drive unit 181, so that the hook mechanism 18 is provided with two hooks 182b to be positioned respectively One of the needle holes 172a, however, the operation of the rotary head pattern sewing machine 1 in the second preferred embodiment is the same as that of the first preferred embodiment, so in this embodiment, the description will not be repeated.

The above-mentioned embodiments are only for convenience to illustrate the present invention and do not limit it. Without departing from the scope of the present invention, various simple deformations and modifications made by those skilled in the industry according to the patent scope of the present invention and the description of the invention should still be included. In the scope of the following patent applications.

1: Rotary head pattern sewing machine 10: Sewing machine body 11: Front 12: pillar 13: base 14: Needle bar mechanism 141: Needle bar driving unit 141a: Needle bar driving source 141b: upper shaft 141c: The first needle bar pulley 141d: Needle bar drive belt 141e: Second needle bar pulley 141f: crankshaft connecting rod 142: Needle bar actuating unit 142a: Needle bar 142b: machine needle 142c: Needle bar limit block 142d: Needle seat 15: Inner presser foot mechanism 151: Inner presser foot 152: Inner presser foot transmission unit 153: Inner presser foot limit block 16: Swing mechanism 161: swing driving source 161a: axis of rotation 162: Needle bar seat 162a: connection part 162b: Needle bar piercing part 162c: Storage space 163: Swing transmission unit 163a: Swing arm 163b: swing connecting rod 163c: Swing piece 163c1: swing arm 163c2: swing axis 164: Pivot point 17: Rotating seat 171: Kettle shaft table 172: Needle plate 172a: pinhole 18: Hook mechanism 181: Hook driving unit 181a: Hook driving source 181b: lower shaft 181c: The first hook pulley 181d: Second hook pulley 181e: Hook driving belt 182: Hook actuation unit 182a: kettle shaft 182b: Hook 182c: Bevel gear set 20: Front steering mechanism 21: Front gearbox 22: Front drive source 23: Front rotation column 30: Feeding mechanism 31: X-axis feeding unit 32: Y-axis feeding unit 33: Fixture unit 40: Steering mechanism of kettle shaft table 41: Kettle shaft table gearbox 42: Driving source of kettle shaft table 43: Rotating column of kettle shaft table 50: Controller 60: sewing 61: seam mesh 70: Sewing path 71: sewing point 72: Sewing distance A1: Parallel state A2: The first tilt state A3: The second inclined state F: Sewing method D1: the first direction D2: Second direction L: axis of rotation S1: Data acquisition steps S2: Move step S3: Sewing steps S4: Turning step S5: move step again S6: Second sewing step 80: Single Needle Rotary Head Pattern Sewing Machine 81: front 811: needle bar 812:Machine needle 813: noodles 82: Front steering mechanism 83: Steering mechanism of kettle shaft table 84: Feeding mechanism 85:needle plate 86: Hook 861: bottom line 87: sewing

Fig. 1A is a perspective view of a conventional rotary head pattern sewing machine; Fig. 1B is a schematic diagram of a machine needle being bent and deformed by a moving sewing object; Fig. 2 is a perspective view of the first preferred embodiment of the rotary head pattern sewing machine of the present invention; Fig. 3 is the schematic diagram that the steering mechanism of the headstock of the present invention is installed on the headstock; Fig. 4 is a schematic diagram of the needle bar mechanism, the inner presser foot mechanism and the swing mechanism located inside the headstock; Fig. 5A is a schematic diagram of a swing mechanism connected to a needle bar mechanism; Figure 5B is an exploded view of the swing mechanism connected to the needle bar mechanism; Fig. 6A and Fig. 6B are schematic diagrams of the swing mechanism driving the needle bar to swing; Fig. 7 is a schematic diagram of the kettle shaft table and the hook mechanism installed on the rotating seat; Fig. 8 is a schematic diagram of the still shaft table steering mechanism installed on the rotating seat; 9 is a schematic diagram of a module in which the controller is electrically connected to the needle bar mechanism, the swing mechanism, the steering mechanism of the headstock, the feeding mechanism, and the steering mechanism of the kettle shaft table; Fig. 10 is a flow chart of the steps of the sewing method; Figure 11 is a schematic diagram of the sewing path; Fig. 12 is a schematic diagram of the lateral movement of the sewing object driven by the feeding mechanism; Fig. 13A is a schematic diagram of a machine needle obliquely inserted into a sewing object; Fig. 13B is a schematic diagram of the needle swinging to change from the first inclined state to the parallel state; Fig. 14 is a schematic diagram of a sewn object formed with a plurality of seams parallel to the first direction; Fig. 15 is a schematic diagram showing that the steering mechanism of the headstock drives the headstock to rotate; and Fig. 16 and Fig. 17 are schematic diagrams of the second preferred embodiment of the rotary head pattern sewing machine of the present invention.

1: Rotary head pattern sewing machine 10: Sewing machine body 11: Front 12: pillar 13: base 17: Rotating seat 171: Kettle shaft table 181b: lower shaft 20: Front steering mechanism 21: Front gearbox 22: Front drive source 23: Front rotation column 30: Feeding mechanism 31: X-axis feeding unit 32: Y-axis feeding unit 33: Fixture unit 40: Steering mechanism of kettle shaft table 41: Kettle shaft table gearbox 42: Driving source of kettle shaft table 43: Rotating column of kettle shaft table

Claims (6)

A rotary head pattern sewing machine is capable of sewing a sewing object, and includes: a head with a needle bar mechanism and a swing mechanism, the needle bar mechanism has a needle bar drive source and a needle bar drive through the needle bar The source is a needle bar that can move up and down, and the above-mentioned swing mechanism has a needle bar seat connected to the above-mentioned needle bar and a swing drive source that can drive the above-mentioned needle bar seat to reciprocate and swing; a base is located under the above-mentioned headstock, The above-mentioned base is equipped with a rotatable rotating seat and a rotary hook connected to the above-mentioned rotating seat; a headstock steering mechanism can drive the above-mentioned headstock to rotate with the Z axis as the axis, so that both the above-mentioned needle bar mechanism and the swing mechanism can Rotate together; a feeding mechanism, which has an X-axis feeding unit that can drive the above-mentioned sewing object to move along the X-axis direction and a Y-axis feeding unit that can drive the above-mentioned sewing object to move along the Y-axis direction; a kettle The pillow block steering mechanism is installed on the above-mentioned base, and the above-mentioned still shaft block steering mechanism can drive the above-mentioned rotating seat to rotate around the Z-axis; and a controller is electrically connected to the above-mentioned needle bar mechanism, swing mechanism, and head steering Mechanism, feeding mechanism, and steering mechanism of the kettle shaft table; wherein, the above-mentioned controller controls the above-mentioned feeding mechanism to drive the above-mentioned sewing object to move. The moving direction of the object; wherein, the above-mentioned controller can control the above-mentioned feeding mechanism to change the moving direction of the above-mentioned sewing object. The headstock is rotated together to change the swinging direction of the needle bar, so that the changed swinging direction of the needle bar and the moving direction of the sewing object after the change can be consistent; wherein, when the headstock is rotating, the controller Simultaneously, control the steering mechanism of the above-mentioned kettle shaft table to drive the above-mentioned rotating seat to rotate in the same direction with the Z axis as the axis. The rotary head pattern sewing machine as described in Claim 1, wherein, when the controller controls the feeding mechanism to drive the sewing object to move, the controller also controls the swing mechanism to drive the needle bar to swing, so that one installed on the The machine needle of the needle bar can move synchronously with the above-mentioned sewing object while penetrating through the above-mentioned sewing object. The rotary head pattern sewing machine as described in Claim 1, wherein the swing mechanism is further provided with a swing transmission unit between the needle bar base and the swing drive source, and the swing transmission unit has a swing arm connected to the swing drive source, A swing member connected to the needle bar base and a swing link between the swing arm and the swing member, the swing drive source can drive the swing arm to rotate to drive the swing member to swing. The rotary head pattern sewing machine as described in Claim 1, wherein, the above-mentioned headstock is equipped with an inner presser foot mechanism, and the above-mentioned inner presser foot mechanism has an inner presser foot transmission unit and an inner presser foot arranged in parallel with the above-mentioned needle bar. The foot transmission unit can drive the above-mentioned inner presser foot to move up and down, and the above-mentioned inner presser foot is connected to the above-mentioned needle bar seat, so that both the above-mentioned needle bar and the inner presser foot can reciprocate and swing synchronously. A sewing method, using the rotary head pattern sewing machine described in any one of claims 1 to 4, and the sewing method includes: a data acquisition step, obtaining a sewing path, and the sewing path has a plurality of different positions sewing points, and form a plurality of seam distances representing the distance between the above two sewing points and a plurality of steering commands representing the steering range of the above-mentioned vehicle head according to the above-mentioned plurality of sewing points; In a moving step, the feeding mechanism drives the sewing object to move according to one of the sewing points in the sewing path; in a sewing step, the needle bar drive source drives the needle bar to reciprocate along the Z-axis direction , at the same time, the above-mentioned oscillating driving source drives the above-mentioned needle bar to reciprocate according to the above-mentioned seam distance, so that the swing direction of the above-mentioned needle bar can be the same as the moving direction of the above-mentioned sewing object; command to drive the above-mentioned headstock to rotate, so that the swing direction of the above-mentioned needle bar can be changed; and one more moving step, the above-mentioned feeding mechanism drives the above-mentioned sewing object along different directions according to another above-mentioned sewing point of the above-mentioned sewing path Move, so that the moving direction of the above-mentioned sewing object can be changed, so that the changed swing direction of the above-mentioned needle bar and the changed moving direction of the sewing object can be consistent. The sewing method as described in claim 5, wherein the above-mentioned data obtaining step further obtains a desired sewing pattern and a set sewing distance, and the curve of the desired sewing pattern forms the above-mentioned sewing path, and the above-mentioned desired sewing pattern passes through The plurality of sewing points are formed by setting the seam distance, and each sewing point has a coordinate command, and every two adjacent sewing points form the steering command according to their respective coordinate commands.

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