CN217149549U - Three-dimensional sewing template machine capable of automatically cutting threads - Google Patents

Abstract

The utility model discloses a sewing machine is with automatic trimming device and contain this kind of trimming device's three-dimensional sewing template machine belongs to sewing machine technical field. The purpose of the utility model is realized like this: an automatic thread trimming device for a sewing machine is positioned on a moving track of a three-dimensional medium and used for cutting off the three-dimensional medium; it at least comprises: the middle parts of the two rotary shearing parts are provided with a hinge point, and the two rotary shearing parts realize relative opening or closing of the two rotary shearing parts around the hinge point; and a driving member for driving the two rotary cutters to open or close relatively. The utility model discloses an automatic trimming device can use on template machine, but also can realize the automatic trimming to three-dimensional medium, very big very high the work efficiency of template machine product.

Description

Three-dimensional sewing template machine capable of automatically cutting threads

Technical Field

The utility model belongs to the technical field of sewing machine, refer in particular to a three-dimensional sewing template machine that can automatic trimming.

Background

At present, a sewing machine, particularly a template machine, is provided with a corresponding automatic thread cutting device for upper threads and bottom threads, the device can automatically cut off sewing threads, and the device can greatly increase the production efficiency by being matched with an automatic presser foot lifting mechanism.

Among the previously filed patents are utility model patent No. 2021116113654. It specifically discloses a template machine of three-dimensional sewing. This patent specifically discloses a template machine of three-dimensional sewing function that need not make the template frame that stretches tight alone to every pattern, can realize more convenient use experience and more efficient production efficiency. And the cloth obtained by sewing is also the cloth with the effect of three-dimensional patterns, so the quilt cover is very suitable for the production and the manufacture of the quilt cover.

However, in the above patent technologies, there is no automatic thread trimming function, which is not favorable for improving the production efficiency. Therefore, it is necessary to develop a structure capable of realizing an automatic thread trimming function and a technical scheme for applying the automatic thread trimming structure to a template machine for three-dimensional sewing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a three-dimensional sewing template machine of ability automatic trimming.

The purpose of the utility model is realized like this: a three-dimensional sewing template machine capable of automatically cutting threads is used for performing sewing operation by moving a template frame; comprises the following steps:

the machine head sewing device at least comprises an upper thread sewing mechanism and a lower thread sewing mechanism, and the upper thread sewing mechanism and the lower thread sewing mechanism are matched to form a lock-type stitch and sew materials;

a medium transport device for transporting a three-dimensional medium; and

the automatic thread trimming device is positioned on the moving track of the three-dimensional medium and is used for cutting off the three-dimensional medium;

wherein, the upper thread sewing mechanism at least has:

the needle thread reciprocating puncture assembly is provided with a needle rod and a multi-port needle chuck; the multi-port needle chuck is connected with the needle rod and moves synchronously, and is used for fixing at least two needles; and

the needle plate is provided with a needle hole suitable for the penetration of the machine needle and a medium perforation suitable for the extension of the three-dimensional medium out of the needle plate.

Preferably, the automatic thread trimming device at least comprises:

the middle parts of the two rotary shearing parts are provided with a hinge point, and the two rotary shearing parts realize relative opening or closing of the two rotary shearing parts around the hinge point; and

a driving member for driving the two rotary cutters to open or close relatively.

Preferably, the rotary shearing part is at least provided with an oblique abutting rod, and a front abutting surface and a rear abutting surface are respectively formed on the oblique abutting rod along two sides of the motion direction of the oblique abutting rod;

wherein the drive member has at least:

a driving power source for driving the rotary shearing member to advance or retreat;

the two front triggering columns are respectively positioned on the front sides of the front abutting surfaces, so that when the driving rotary shearing piece advances, the front abutting surfaces abut against the front triggering columns, and the two rotary shearing pieces are relatively closed; and

and the two rear triggering columns are respectively positioned at the rear sides of the rear abutting surfaces, so that when the driving rotary shearing part retreats, the rear abutting surfaces abut against the rear triggering columns, and the two rotary shearing parts are relatively opened.

Preferably, the automatic thread trimming device further includes at least:

the trimming mounting plate is formed with an adjusting groove; the front trigger column and the rear trigger column are in sliding connection with the adjusting groove; and

one side of the trimming sliding block is hinged with the hinged point, and the rear end of the trimming sliding block is connected with the driving power source;

the automatic thread trimming device at least further comprises:

the upper bearing is sleeved at the upper ends of the front trigger column and the rear trigger column and corresponds to the inclined abutting rod; and

and the lower bearing corresponds to the thread trimming sliding block.

Preferably, the rotary cutter is located on a path of change of the rotary shuttle member;

the automatic thread trimming device at least comprises a thread trimming avoiding mechanism which is used for driving the rotary trimming piece to avoid the replacement path of the rotating shuttle component;

wherein, the mechanism is dodged to trimming has at least:

a mounting member fixed to the lower thread sewing mechanism;

a hinge member relatively rotating with the mounting member and moving in synchronization with the rotary cutter; and

a locking member for locking or unlocking the relative positions of the mounting member and the hinge member.

Preferably, the hinge member has at least:

a hinge base fixed to the mounting member;

one end of the hinge plate is hinged with the hinge seat; and

one end of the mounting bracket is fixedly connected with the other end of the hinge plate, and the other end of the mounting bracket and the rotary shearing piece synchronously rotate;

wherein the locking member has at least:

a locking plate which is rotatably arranged on the mounting bracket; the lock catch plate is provided with a lock catch groove; and

the limiting pin shaft penetrates through the mounting bracket and the mounting component simultaneously; and the limiting pin shaft corresponds to the lock catch groove, so that the limiting pin shaft is locked in the lock catch groove when the lock catch component is in a locking state.

Preferably, a medium conveying device is further included and is used for conveying the three-dimensional medium;

wherein the medium transport device has at least:

a guide member for guiding the solid medium to flow toward the pin plate; and

a thread passing member having a thread passing hole through which the three-dimensional medium passes;

wherein, one end of the guide component at least partially extends into the component mounting hole of the needle plate and is at least positioned on the sewing track of the bottom thread;

the wire passing component at least partially extends into the component mounting hole in a working state, so that the three-dimensional medium passes through the wire passing hole.

Preferably, the automatic thread trimming device at least further comprises a thread feeding and shearing mechanism, and the thread feeding and shearing mechanism is used for driving the three-dimensional medium to move towards one side of the rotary shearing piece when the automatic thread trimming device works;

wherein, send scissors mechanism to have at least:

the upper end of the rotary swing arm is connected with the wire passing component; and

and the shearing power source is hinged with the lower end of the rotating swing arm and drives the rotating swing arm to swing.

Preferably, the sending and cutting mechanism further comprises at least:

the rotating shaft penetrates through the lower end of the rotating swing arm and synchronously rotates with the rotating swing arm; and

one end of the rotating connecting rod is connected with the rotating shaft, and the other end of the rotating connecting rod is hinged with the shear feeding power source through a joint bearing.

Preferably, the automatic thread trimming device at least further comprises a stabilizing device for stabilizing the thread passing member;

wherein the stabilizing device has at least:

a stabilizing member rotatably disposed at a lower end of the wire passing member; and

a stabilizing driving member driving the stabilizing member to approach or separate from a lower end of the wire passing member;

wherein the stabilizing drive member has at least:

a drive joint, the upper end of which is hinged with the stabilizing member; and

and the stable driving power source is provided with a telescopic rod, and the telescopic rod is hinged with the other end of the driving joint.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. template machine can need not make the template alone to every pattern and tighten the frame as among the prior art, as long as the template machine has just can use according to the function of setting for the route sewing, and need not be alone for the frame is tightened to certain figure independent design template. Thereby realizing more convenient use experience and more efficient production efficiency.

2. The utility model discloses an automatic trimming device can use on template machine, but also can realize the automatic trimming to three-dimensional medium, very big improvement the work efficiency of template machine product.

3. The utility model discloses a mechanism can be applicable to the structure of the rotating shuttle component of current template machine is dodged in design trimming, guarantees that the rotating shuttle component is changed and is not influenced.

Drawings

FIG. 1 is a perspective view of a three-dimensional sewing stencil machine;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of the assembly of the bobbin thread sewing mechanism and the automatic thread trimming apparatus;

FIG. 4 is a schematic view of the lower thread sewing mechanism;

FIG. 5 is a schematic cross-sectional view of a cloth mated with a three-dimensional medium;

FIG. 6 is a schematic view of the direction of the hook and the needle of the rotary hook member;

FIG. 7 is a schematic view of the automatic thread trimming apparatus in an open state;

FIG. 8 is a schematic view of the automatic trimming device in a closed state;

FIG. 9 is a schematic structural view of the rotary cutter and the drive member;

FIG. 10 is a simplified schematic illustration of the concealed mounting base and associated fittings of FIG. 7;

FIG. 11 is a schematic view of the feed and shear mechanism and media transport;

FIG. 12 is an exploded view of the media transport device;

FIG. 13 illustrates the functional effect of the wire relief mechanism;

fig. 14 is a schematic structural view of a shear avoidance mechanism;

fig. 15 is a schematic view of the latch plate in an open state;

FIG. 16 is a schematic view showing the assembly of the stabilizer with the wire passing member;

fig. 17 is a schematic view of the needle plate and the thread passing member.

In the figure: 1-a frame; 2-an upper thread sewing mechanism; 3-a lower thread sewing mechanism; 4-rotating the shearing part; 5-a drive member; 6-a trimming avoiding mechanism; 7-a media transport device; 8-a stabilizing device; 9-a shear sending mechanism; 10-a bobbin thread rotating mechanism; 11-upper thread steering mechanism; 12-distributing; 13-a stereomedium; 14-a table top; 15-a housing; 16-a drive motor; 17-a speed reducer; 18-a slip ring; 19-a coupling; 20-a thread trimming mechanism; 21-an upper thread reciprocating puncture component; 22-a needle plate; 31-a rotating shuttle member; 32-mounting a base; 41-oblique leaning rod; 42-trimming the mounting plate; 43-an adjustment groove; 44-trimming support plate; 51-a drive power source; 52-front trigger post; 53-rear trigger post; 54-trimming slide block; 55-an upper bearing; 56-lower bearing; 61-a mounting member; 62-a hinge member; 63-a locking member; 71-a guide member; 72-a wire passing member; 81-a stabilizing member; 82-a stabilizing drive member; 91-rotating the swing arm; 92-a shear-feeding power source; 93-rotating the rotating shaft; 94-a rotating link; 95-spherical plain bearings; 211-needle bar; 212-multi-port needle cartridge; 213-machine needle; 221-pinhole; 222-media perforation; 411-front abutment face; 412-rear abutment face; 541-a slider slot; 621-hinge mount; 622-hinge plate; 623-mounting a bracket; 624-bar hole; 631-a locking plate; 632-a locking groove; 633-limiting pin shaft; 634-a toggle part; 721-line passing holes; 722-a linker arm; 723-a guide groove; 724-anterior perforation; 821-a drive joint; 822-stabilizing the driving power source; 823-telescopic rod; 824-an articulation joint; 826-articulated fork.

Detailed Description

The invention will be further described with reference to specific embodiments.

[ EXAMPLES one ]

The template machine can realize the three-dimensional pattern sewing without carving the shape of a figure on a clothing template frame in advance, and can realize the three-dimensional sewing aiming at the pattern only by designing the sewing track of the three-dimensional pattern in advance.

The template machine according to the present embodiment has one effect that the template frame does not need to be separately manufactured for each pattern as in the prior art, the template machine can be used as long as the template machine has the function of sewing according to the set path, and the template frame does not need to be separately designed for a certain pattern, so that the template machine can be used more conveniently and efficiently.

Furthermore, in order to achieve more efficient production efficiency, an automatic thread trimming device needs to be designed, and the automatic thread trimming function is achieved on the three-dimensional sewing template machine by the automatic thread trimming device.

The following specifically describes the manner in which the present embodiment is implemented.

As shown in fig. 1, fig. 1 is a perspective view of a three-dimensional sewing template machine; as can be seen from fig. 1, it discloses in particular a three-dimensional sewing template machine which, in actual use, performs a sewing operation by moving a template frame. The template stretching frame is a tool for clamping the cloth 12, and the template machine is provided with a template stretching frame driving mechanism which drives the template stretching frame to move so as to change the position of the needle 213 penetrating the cloth 12.

The following specifically describes the structural principle of the template machine for realizing three-dimensional sewing.

As can be seen from figure 1, the three-dimensional sewing template machine at least comprises a frame 1, the upper end of the frame 1 is provided with a table top 14, and the template stretching frame slides on the table top 14. And then from the top 14 up to the shell 15.

On the upper side of the housing 15, a needle thread turning mechanism 11 is correspondingly disposed, and the needle thread turning mechanism 11 is used to drive the needle thread sewing mechanism 2, specifically at least the needle 213 or the needle bar, according to the different rotation angles of the path. Correspondingly, as can be seen from fig. 1, a bobbin thread rotating mechanism 10 is provided on the lower side of the table 14, and the bobbin thread rotating mechanism 10 is mainly used for driving the bobbin thread sewing mechanism 3 to rotate, and specifically at least driving the rotary shuttle member 31 to rotate.

Referring to fig. 2 again, fig. 2 is a partially enlarged view of a portion a in fig. 1, and fig. 2 is a perspective view of the head sewing device. As can be seen from fig. 2, the template machine for three-dimensional sewing at least comprises a machine head sewing device, the machine head sewing device at least comprises an upper thread sewing mechanism 2 and a lower thread sewing mechanism 3, the upper thread sewing mechanism 2 and the lower thread sewing mechanism 3 are matched to form a lock stitch and sew materials, and the corresponding matching of the two mechanisms is the working principle of the existing template machine for realizing basic sewing, which is not described in detail herein.

Further, as can be seen from FIG. 2, the upper thread sewing mechanism 2 has at least an upper thread reciprocating 10 21, and the upper thread reciprocating 21 has at least a needle bar 211 and a multi-port needle holder 212. Also in this embodiment, a multi-port needle holder 212 is connected to the needle bar 211 and moves synchronously. Correspondingly, the multi-port needle chuck 212 can be driven to move along with the reciprocating motion of the needle rod 211. As can also be seen in FIG. 2, the multiple port needle cartridge 212 also holds two needles 213.

As can be seen from fig. 2, a needle plate 22 is disposed at the lower end of the needles 213, and the needle plate 22 has a needle hole 221 adapted to be pierced back and forth by the two needles 213 and a medium penetration hole 222 adapted to allow the three-dimensional medium 13 to protrude from the needle plate 22. Wherein the medium feeding device 7 is located at a lower side of the needle plate 22 and guides the sewing thread through the medium perforation 222.

In the present embodiment, the multi-port needle holder 212 is a double-port needle holder, and thus corresponds to two needles 213.

Correspondingly, as can be seen from fig. 2, a three-dimensional medium 13 passes through the medium through hole 222, and simultaneously the two needles 213 reciprocate up and down, so that three-dimensional sewing can be realized. Correspondingly, the three-dimensional medium 13 is located between the two pinholes 221. Therefore, the stereoscopic medium 13 can be bound through the reciprocating penetration of the bottom thread and the upper thread, and the stereoscopic sewing is realized.

Referring to fig. 3 again, fig. 3 is an assembly view of the lower thread sewing mechanism and the automatic thread cutting device, and as can be seen from fig. 3, a mounting base 32 is arranged below the needle plate 22, a lower thread rotating mechanism 10 is arranged below the mounting base 32, and the lower thread rotating mechanism 10 is used for driving the mounting base 32 to rotate so as to adapt to the traveling direction in real time. In addition, an automatic thread cutting device for automatically cutting the three-dimensional medium 13 is arranged on one side of the mounting base 32.

Referring also to fig. 4, fig. 4 is a schematic view of the lower thread sewing mechanism. As can be seen from fig. 4, the lower thread sewing mechanism 3 has at least a mounting base 32, and the upper end of the mounting base 32 is fixedly provided with the needle plate 22; in fig. 4, in order to more clearly express the relationship between the two, it is shown in the form of an exploded view, and there is a thread passing member 72 under the needle plate 22, and there is a mounting base 32 under the thread passing member 72, and a rotary shuttle member 31 in the mounting base 32, the rotary shuttle member 31 is used for realizing the thread hooking operation; and an automatic thread cutting mechanism 20 for automatically cutting the sewing thread of the board machine of a normal size in actual use. In particular, in this embodiment, a circular knife thread trimming mechanism is used.

In addition, as shown in fig. 4 in combination with the position of the needle hole 221 on the needle plate 22, in the present embodiment, in order to implement three-dimensional sewing, the thread hooking direction of the rotating shuttle member 31 is perpendicular to the arrangement direction of the machine needles 213, and only in this way, it can be achieved that one rotating shuttle member 31 hooks the upper threads on a plurality of machine needles 213 at the same time, so as to implement three-dimensional sewing by wrapping the three-dimensional medium 13.

Referring to fig. 5, fig. 5 is a schematic cross-sectional view of the cloth 12 and the three-dimensional medium 13 after being matched. As shown in fig. 5, the three-dimensional sewing according to the present embodiment is a state in which the cloth 12 is on top and the three-dimensional medium 13 is on bottom, in at least one of the cases after sewing. During the process, the back thread and the upper thread on the existing template are matched to be arranged between the three-dimensional medium 13 and the cloth 12 in a reciprocating way, so that the relative position between the three-dimensional medium 13 and the cloth 12 is fixed, and finally, as shown in fig. 5, the shape of the convex upper surface is called on the front surface of the cloth 12, so that a three-dimensional sewing pattern is formed.

Referring to fig. 6, fig. 6 is a schematic view illustrating the direction of the hook of the rotating shuttle member 31 and the direction of the needle 213. As shown in fig. 6, two arrows are arranged from the upper and lower ends of the line segment C1 and the line segment C2, respectively, the line segment C1 and the line segment C2. This pattern shows the process of the upper thread being driven by the two needles 213 to pierce the fabric up and down and the direction of the piercing. There is also a circle D indicated by a dotted line, and there is also an arrow on the circle D, which indicates the direction in which the rotary hook member 31 hooks. On the upper side of the circle D there is also a hatched part, which is a solid medium 13. Hatched means that it is extending perpendicular to the paper. And thus, the piercing direction of the needle 213, and the direction of the hook line of the rotary hook member 31 are perpendicular to each other.

Therefore, in the present embodiment, the hook of the hook corresponding to the rotating hook at this time is required to be perpendicular to the traveling direction of the cloth 12, so that it is possible to ensure that one rotating hook can hook the loops of the two upper threads at any time. The result of the operation shown in fig. 5 can be achieved.

As can be seen from fig. 6, the direction of the hook of the rotating shuttle member 31, i.e. the direction of the arrow in the circle D, is necessarily perpendicular to the direction of the three-dimensional medium 13. Therefore, in the stitch after actual sewing, the three-dimensional medium 13 is respectively wound by the upper thread and the bottom thread in a reciprocating manner from the left to the right in the radial direction, and the upper thread and the bottom thread penetrate through the fabric in a reciprocating manner from top to bottom while the surface is wound in a reciprocating manner, so that the three-dimensional medium 13 and the fabric can be tightly combined finally.

Correspondingly, in the embodiment, along with the change of the moving direction of the template frame or the change of the trend of the stitches, the upper thread steering mechanism 11 correspondingly and synchronously performs steering operation, and the operation result is that the machine head sewing device is always perpendicular to the advancing direction of the cloth 12. That is, during the sewing operation, the two needles 213 need to face the cloth 12 at all times, or parallel to or even coincident with the cloth 12. Thus, in this embodiment, the sewn stitch is a pattern of two parallel traces, if there is no three-dimensional media 13. When the three-dimensional sewing is needed, the three-dimensional medium 13 is configured, so that the technical effect of the three-dimensional sewing is achieved.

As can be seen from fig. 1 and 3, the structural principles of the bobbin thread turning mechanism 10 and the surface thread turning mechanism 11 mainly include component assemblies such as a driving motor 16, a speed reducer 17, a slip ring 18, and a coupling 19.

The working principle of the automatic thread trimming device will be described in detail below. As shown in fig. 3 in particular, in the present embodiment, the automatic thread cutting device is located on the moving track of the sewing thread and is used for cutting the three-dimensional medium 13. As can be seen from fig. 3, the automatic thread trimming device at least comprises two rotary cutting members 4, the middle parts of the two rotary cutting members 4 are provided with a hinge point, and the two rotary cutting members 4 realize relative opening or closing of the two rotary cutting members 4 around the hinge point.

That is to say, the two rotary cutting parts 4 form a structure similar to a pair of scissors, and the three-dimensional medium 13 can be loosened or the three-dimensional medium 13 can be automatically cut off by opening or closing the two rotary cutting parts 4, so that the purpose of automatic thread cutting is achieved.

Correspondingly, in this embodiment, a driving member 5 is also required for driving the two rotary cutting members 4 to open or close relatively.

As shown in fig. 7, fig. 7 is a schematic view of the automatic thread trimming apparatus in an opened state. Compared to the automatic thread trimming device shown in fig. 3; the needle plate 22 and the rotary shuttle member 31 are hidden in fig. 7.

Referring to fig. 8, fig. 8 is a schematic view of the automatic thread trimming apparatus in a closed state. It can also be seen from fig. 8 that the two rotary cutters 4 are in an open state compared to fig. 3 and 7; in fig. 8, the two rotary cutters 4 are in a closed state, thereby performing a thread cutting process.

The process of implementing the trimming is described in detail below with reference to fig. 3, 7 and 8. As can be seen from the three figures, the rotary cutter 4 has at least one inclined abutment bar 41, and the inclined abutment bar 41 is located at the lower end of the rotary cutter 4, at least at the part protruding obliquely from the lower end of the hinge point. And the two sides of the oblique abutting rod 41 along the moving direction thereof can be respectively formed with a front abutting surface 411 and a rear abutting surface 412.

It can also be seen from the three figures mentioned above that the drive member 5 has at least:

two front triggering columns 52 which are respectively positioned at the front side of the front abutting surface 411, so that when the rotary shearing part 4 advances, the front abutting surface 411 abuts against the front triggering columns 52, and the two rotary shearing parts 4 are relatively closed; and

two rear triggering columns 53 respectively located at the rear side of the rear abutting surface 412, so that when the rotary shearing part 4 retreats, the rear abutting surface 412 abuts against the rear triggering columns 53, so that the two rotary shearing parts 4 are relatively opened.

The drive means 5 also have at least one drive power source 51 for driving the rotary cutter 4 forward or backward. In the present embodiment, the driving power source 51 is a cylinder.

Therefore, in the above technical solution, the rotary shearing part 4 can be pushed to advance by the movement of the driving power source 51, and in the advancing process, the front abutting surface 411 of the oblique abutting rod 41 abuts against the front triggering post 52, and finally the two rotary shearing parts 4 are relatively folded; in the process of retreating, the rear abutting surface 412 of the oblique abutting rod 41 abuts against the rear triggering post 53, and finally the state that the two rotary shearing parts 4 are relatively opened and the trimming is withdrawn is realized.

Turning to fig. 9, fig. 9 is a schematic view of the structure of the rotary cutter 4 and the drive member 5. As can be seen in fig. 9, the automatic thread trimmer device also has at least a thread trimmer mounting plate 42, and the thread trimmer mounting plate 42 is located below the front trigger post 52 and the rear trigger post 53. Adjusting grooves 43 are respectively formed on two sides of the trimming mounting plate 42; the front trigger post 52 and the rear trigger post 53 are slidably coupled to the adjustment slot 43. The amplitude of opening and closing of the rotary shears 4 and the point in time of the triggering action can be varied by adjusting the position of the front triggering cylinder 52 and the rear triggering cylinder 53 in the adjustment groove 43.

As can also be seen from fig. 9, the drive power source 51 is also mounted on the right side of the thread trimming mounting plate 42; meanwhile, as can be seen from fig. 9, a trimming support plate 44 is further arranged below the trimming mounting plate 42, and the trimming support plate 44 is fastened to the trimming mounting plate 42 by a fastener.

In addition, as can be seen from fig. 9, the upper ends of the front triggering post 52 and the rear triggering post 53 are each provided with an upper bearing 55, and the upper bearing 55 corresponds to the position of the inclined abutting rod 41. Therefore, in the corresponding embodiment, the number of the upper bearings 55 in the same front triggering post 52 or rear triggering post 53 is not necessarily only one, and two upper bearings 55 may be coaxially sleeved.

This is because in the present embodiment, the two rotary shearing units 4 are stacked one on top of the other, and therefore the position of the upper bearing 55 for the lower rotary shearing unit is located lower than the other; it is of course also possible to simultaneously correspond to two rotary shearing modules 4 by increasing the width of the upper bearing 55.

As can be seen from fig. 9, the automatic thread trimming device at least further includes a thread trimming slider 54, one side of the thread trimming slider 54 is hinged to the hinge point, and the rear end of the thread trimming slider 54 is connected to the driving power source 51. In the present embodiment, therefore, the telescopic movement of the drive power source 51 results in a relative movement of the trimmer sliders 54, which in turn drives the advance and retreat of the two rotary trimmer members 4.

Correspondingly, as can also be seen from fig. 9, the lower end of the front trigger post 52 is further provided with a lower bearing 56, and the lower bearing 56 is positioned corresponding to the trimming slide 54. The design can make the sliding of the trimming slide block 54 smoother. As can be seen from fig. 9, the trimming slider 54 has a corresponding slider groove 541, and the lower bearing 56 is partially inserted into the slider groove 541, so that the lower bearing has a guiding function while ensuring strength.

Referring additionally to fig. 10, fig. 10 is a simplified schematic illustration of fig. 7 with the mounting base 32 and associated accessories hidden. As can be seen from fig. 10, in the present embodiment, the automatic thread cutting device has a thread feeding mechanism 9 in addition to the rotary cutter 4 and the driving member 5, and the thread feeding mechanism 9 is used for driving the three-dimensional medium 13 to move toward the rotary cutter 4 when the automatic thread cutting device is in operation.

This mechanism is designed because, as can be seen from fig. 3, 7 and 8, the distance between the rotary cutter 4 and the three-dimensional medium 13 is relatively long even after advancing, and in actual use, the space of the mounting base 32 is limited because the rotary shuttle member 31 and the mechanism for cutting the thread are also built in.

Therefore, in order to avoid the above conventional product structure, the present embodiment further includes a feeding and shearing mechanism 9 and a medium conveying device 7 as shown in fig. 11.

Fig. 3 and 4 show that the medium conveying device 7 at least has a line passing member 72, which has a line passing hole 721 for the three-dimensional medium 13 to pass through, and the position of the line passing hole 721 corresponds to the medium through hole 222.

As can be seen from fig. 10, the scissors mechanism 9 at least has a rotary swing arm 91, and the upper end of the rotary swing arm 91 is connected to the thread passing member 72, that is, by the rotation of the rotary swing arm 91, the rotation of the thread passing member 72 can be driven, and the rotary swing arm approaches the rotary cutting member 4 by the direction of the rotation.

As can be seen from fig. 10, the shear feeding mechanism 9 further has a shear feeding power source 92, and the shear feeding power source 92 is hinged to the lower end of the rotating swing arm 91 and drives the rotating swing arm 91 to swing. Specifically, the shear feeding mechanism 9 at least further includes a rotating shaft 93 penetrating the lower end of the rotating swing arm 91 and rotating synchronously with the rotating swing arm 91. The shear feeding mechanism 9 further has a rotating link 94, one end of which is connected to the rotating shaft 93, and the other end of the rotating link 94 is hinged to the shear feeding power source 92 through a joint bearing 95.

In this embodiment, the shear power source 92 is an air cylinder, so that the telescopic motion of the shear power source 92 drives the joint 821 bearing 95 to move, and accordingly, the rotating link 94 swings around the joint bearing 95, and the rotating shaft 93 connected to the other end of the rotating link 94 rotates synchronously. And therefore the corresponding swing arm 91 swings.

As can be seen from fig. 9 and 10, the cutting support plate 44 has an L-shaped overall cross section, and supports the cutting mounting plate 42 at one side thereof, and is connected to the mounting bracket 623 of the cutting avoiding mechanism 6 at the other side thereof.

As can be seen from fig. 11, the thread passing member 72 is connected to the upper end of the rotary swing arm 91 by a fastener, and the three-dimensional medium 13 passes through the thread passing member 72 of the medium conveying device 7. To understand the structure of the medium transporting device 7 in detail, see fig. 12 in particular, fig. 12 is an exploded view of the medium transporting device 7. As can be seen from fig. 12, the medium conveying device 7 at least has a line passing member 72, and the line passing member 72 has a line passing hole 721 for the three-dimensional medium 13 to pass through; then, a connecting arm 722 is arranged at the left side of the wire passing hole 721, a counter bore is arranged on the connecting arm 722, and the counter bore is connected with the rotating swing arm 91 in fig. 10, so that the wire passing member 72 can move. At least one advantage of this design is that the three-dimensional medium 13 can be brought closer to the rotary cutter 4, thereby increasing the success rate of thread cutting.

In addition, as can be seen from fig. 12, the middle of the wire passing member 72 is further provided with a guiding groove 723, the middle of the guiding groove 723 is also provided with a counter bore, and the guiding groove 723 is the wire passing hole 721 in the past. As can be seen from fig. 12, the guide groove 723 has a front through hole 724 in front thereof for the needle 213 to pass through. In actual use, the front through hole 724 extends out of the needle hole 221, and the front through hole 724 is penetrated by the needle.

As can also be seen from fig. 12, the media transport device 7 also has at least one guide element 71 for guiding the three-dimensional media 13 to the needle plate 22. As can be seen from fig. 7, 10 and 12, in the present embodiment, the guide member 71 is inserted into the guide groove 723 of the wire passing member 72. And the guide member 71 has two holes therein which correspond to the counterbores in the middle of the guide groove 723.

In addition, in actual use, the rotary hook member 31 has a bobbin in which a bobbin thread is wound. In actual use, the bobbin thread is always consumed, and therefore needs to be replaced for the bobbin. However, as can be seen in figures 3, 4, 7 and 8, the rotary cutter 4 and the driving member 5 are positioned to block the path of the bobbin to be removed.

In order to solve the above-described problems, in the present embodiment, as shown in fig. 13, fig. 13 is a functional effect diagram of the trimming avoidance mechanism 6. As can be seen from fig. 13, the automatic thread cutting device also has at least a thread cutting avoiding mechanism 6, and the thread cutting avoiding mechanism 6 is used for driving the rotary cutting member 4 to avoid the changing path of the rotary shuttle member 31.

That is, as is apparent from fig. 13, the thread cutting escape mechanism 6 functions to allow the rotary cutter 4 and the driving member 5 to escape from the changing path of the rotary shuttle member 31 by turning. And the operation of the shear feeding mechanism 9 is not influenced in the rotating process.

Referring to fig. 14 in particular, fig. 14 is a schematic structural view of the trimming avoidance mechanism 6. As can be seen from fig. 14, the structure of the wire relief mechanism 6 has at least a mounting member 61 and a hinge member 62. Wherein the mounting member 61 is fixed to the lower thread sewing mechanism 3. Specifically, as can be seen from fig. 13, the mounting member 61 is fixed to the mounting base 32, thereby fixedly connecting to the lower thread sewing mechanism 3. As can be seen in fig. 2, 10 and 14, the left side of the hinge member 62 is pivoted relative to the mounting member 61, and the right side of the hinge member 62 is fixedly connected to the rotary cutter 4. Finally, the rotary shearing part 4 and the power source thereof block the changing route of the rotary shuttle through the trimming avoiding mechanism 6.

Referring next to fig. 14 in detail, it can be seen from fig. 14 that the hinge member 62 performing the above function has at least two hinge seats 621, and one end of each of the hinge seats 621 is fixed to the mounting member 61. Meanwhile, the middle parts of the two hinge seats 621 are hinged with a hinge plate 622, and the left sides of the hinge plates 622 are hinged with the hinge seats 621; a mounting bracket 623 is fixedly mounted to the right side of the hinge plate 622, and the mounting bracket 623 is located between the hinge plate 622 and the mounting member 61. Meanwhile, one end of the mounting bracket 623 is fixedly connected with the other end of the hinge plate 622, and the other end of the mounting bracket 623 and the rotary shearing part 4 rotate synchronously.

The rotary cutter 4 and the driving member 5 can thus be moved by the hinge action between the hinge seat 621 and the hinge plate 622. That is to say the hinge member 62 moves synchronously with the rotary cutter 4.

In addition, although the movement is realized, controllability of the movement is also realized. When locking is required, it is desirable to have the rotary cutter 4 and the drive member 5 in a relatively fixed position. In order to achieve the above technical object, in the present embodiment, a locking member 63 is further added, and the locking member 63 is used for locking or unlocking the relative positions of the mounting member 61 and the hinge member 62.

Referring specifically to fig. 14, the locking member 63 at least has:

a locking plate 631 rotatably disposed on the mounting bracket 623; and the latch plate 631 has a latch groove 632; and

a limit pin 633 passing through both the mounting bracket 623 and the mounting member 61; and the limit pin 633 corresponds to the locking groove 632, so that the limit pin 633 is locked in the locking groove 632 when the locking member 63 is in the locking state. When the limit pin 633 is locked in the locking groove 632, the limit pin 633 is blocked by the locking plate 631 and cannot move.

And because the limit pin 633 passes through the mounting bracket 623 and the mounting member 61 at the same time, and because the mounting member 61 is relatively fixed. A fixation to the rotary cutter 4 and the drive member 5 can thus be achieved.

Referring to fig. 15, fig. 15 is a schematic structural view of the locking plate 631 in an open state, and as can be seen from fig. 15, the hole for the limiting pin 633 to pass through on the mounting bracket 623 is a strip-shaped hole 624, the rotation of the rotary cutting member 4 can be realized through the strip-shaped hole 624, and the length of the strip-shaped hole 624 determines the rotation angle of the rotary cutting member 4. Therefore, after the lock groove 632 of the lock plate 631 blocks the limit pin 633, the rotating path of the rotating shearing part 4 is correspondingly blocked, so as to lock the rotating shearing part 4.

Therefore, the corresponding hole position on the mounting member 61 connected to the limit pin 633 can be a threaded hole, and the position of the limit pin 633 is fixed by the threaded connection with the limit pin 633.

As can be seen from fig. 15, the end of the locking plate 631 further has a striking portion 634, and the striking portion 634 is used for facilitating the user to strike the locking plate 631.

In actual use, because functional components such as the feeding mechanism 9 and the trimming avoiding mechanism 6 exist, as can be seen from fig. 10, 11 and 13, the support of the wire passing member 72 is supported by the rotating swing arm 91 on one side. In actual use, however, there are many actions; meanwhile, the three-dimensional medium 13 is relatively thick and strong, the thread-passing member 72 is subjected to a relatively large pressure in daily use, and if no balanced pressure-bearing scheme is available, the thread-passing member 72 is easily broken or deformed, so that the thread-passing member 72 cannot normally extend into the needle plate 22, equipment operation failure is caused, and working efficiency and product service life are influenced.

In order to solve the above technical problem, the stabilizing device 8 is designed in the present embodiment, and the stabilizing device 8 is used for stabilizing the wire passing member 72. Referring specifically to fig. 16, fig. 16 is a schematic view showing the assembly of the stabilizer 8 and the wire passing member 72.

First of all with regard to the position of the stabilizing device 8, as shown in fig. 3 and 13, the stabilizing device 8 is located on one side of the mounting base 32 shown, in particular on the other side with respect to the shears feeding mechanism 9. Turning to fig. 16, it can be seen from fig. 16 that the stabilizing device 8 has at least:

a stabilizing member 81 rotatably disposed at a lower end of the wire passing member 72; and

and a stabilizing driving member 82 driving the stabilizing member 81 to approach or separate from the lower end of the wire passing member 72.

Wherein the stabilizing drive member 82 has at least:

a driving joint 821 whose upper end is hinged with the stabilizing member 81; and

and a stable driving power source 822 having a telescopic rod 823, wherein the telescopic rod 823 is hinged with the other end of the driving joint 821.

As can be seen from fig. 16, the right side of the steady driving power source 822 further has an articulated joint 824, one side of the articulated joint 824 is articulated with an articulated fork 826, and one end of the articulated fork 826 is fixed to one side of the mounting base 32 by a fastener. Through the mode, the driving power source 51 can be fixed, certain buffering can be realized through hinging, and the service life of the product is prolonged. At least, as shown in fig. 16, after the stabilizing member 81 is rotated to a set angle, it can be positioned at the lower end of the wire passing member 72 to increase stability.

Referring to fig. 17 again, fig. 17 is a schematic view of the needle plate 22 and the guiding member 71, and as can be seen from fig. 17, the needle plate 22 has a needle hole 221, and in this embodiment, the needle hole 221 is also a member mounting hole for disposing the wire passing member 72 and the guiding member 71. As can be seen from fig. 3, 4 and 13, the thread passing member 72 is to be positioned in the member mounting hole and the uppermost end of the thread passing member 72 is to be beyond the member mounting hole in the sewing state, so that the thread passing hole 721 of the thread passing member 72 can be smoothly carried out. As can be further seen in fig. 17, the guide member 71 is located at a position substantially against the end surface of the member mounting hole or needle hole 221, or the sewing path of the bobbin thread. That is, in this embodiment, the guiding member 71 at least passes through the thread passing hole 721 in practical use, and at least one end of the guiding member is extended to reach at least the position of the needle 213.

That is, during the lowering of the needle 213, there should be two needles 213 on both sides of the guide member 71 for at least a certain period of time. The advantage of design like this lies in, can let the length of the bottom line that single wire loop used increase to can reach the effect of pine line, be unlikely to too tightly when finally letting the sewing thread winding on three-dimensional medium 13, influence the product effect.

For the effect of bottom thread loosening, in this embodiment, the loose thread structure in the over-seaming machine and the flat-seaming machine realizes similar functions. However, in the present embodiment, the thread loosening effect is achieved by the guide member 71 which is located between the two needles 213 and is integrally formed as a bar, and the thread loosening effect can be achieved by using the design of the needle plate 22 for the three-dimensional sewing well.

In this sense, therefore, the stabilizing device 8 also has a function of stabilizing the position of the wire passing member 72 so that the wire passing member 72 can be accurately inserted into the member installation hole after each movement.

Referring to fig. 4 and 17, it can be seen that the pinhole 221 further has a line-passing strip portion, that is, the medium through hole 222, which is used to guide the movement of the three-dimensional medium 13 and has a certain depth to keep the movement of the three-dimensional medium 13 stable.

[ example two ]

In this embodiment, the shear power source 92 is a rotary cylinder that rotationally drives the rotation of a rotary swing arm. Such a design can reduce the number of parts such as the rotation shaft 93, the rotation link 94, and the joint bearing 95, and thus the structure is simpler.

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

This specification includes any features disclosed in the appended claims, abstract and drawings, which are, unless expressly stated otherwise, replaceable with other equivalent or similarly purposed alternative features. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Further, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms such as "upper," "above," "lower," "below," and the like in describing relative spatial positions herein is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "sleeved," "connected," "penetrating," "plugged," and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Therefore, the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. A three-dimensional sewing template machine capable of automatically cutting threads is used for performing sewing operation by moving a template frame; it is characterized by comprising the following steps:

the machine head sewing device at least comprises an upper thread sewing mechanism (2) and a bottom thread sewing mechanism (3), wherein the upper thread sewing mechanism (2) and the bottom thread sewing mechanism (3) are matched to form a lock-type stitch and sew materials; and

the automatic thread trimming device is positioned on the moving track of the three-dimensional medium (13) and is used for cutting off the three-dimensional medium (13);

wherein the upper thread sewing mechanism (2) at least has:

an upper thread reciprocating puncture assembly (21) having a needle bar (211) and a multi-port needle holder (212); the multi-port needle chuck (212) is connected with the needle rod (211) and moves synchronously, and the multi-port needle chuck (212) is used for fixing at least two needles (213); and

the needle plate (22) is provided with a needle hole (221) which is suitable for being penetrated by the machine needle (213) and a medium perforation (222) which is suitable for the three-dimensional medium (13) to extend out of the needle plate (22).

2. The three-dimensional sewing template machine capable of automatically cutting threads as claimed in claim 1, wherein the automatic thread cutting device at least comprises:

two rotary shearing parts (4), wherein the middle parts of the two rotary shearing parts (4) are provided with a hinge point, and the two rotary shearing parts (4) realize relative opening or closing of the two rotary shearing parts (4) around the hinge point; and

a driving member (5) for driving the two rotary cutters (4) to open or close relative to each other.

3. The three-dimensional sewing template machine capable of automatically cutting threads according to claim 2, characterized in that the rotary cutting member (4) is provided with at least an oblique abutting rod (41), and the oblique abutting rod (41) is respectively formed with a front abutting surface (411) and a rear abutting surface (412) along two sides of the motion direction;

wherein the drive member (5) has at least:

a driving power source (51) for driving the rotary shearing member (4) to advance or retreat;

two front triggering columns (52) which are respectively positioned at the front side of the front abutting surface (411), so that when the driving rotary shearing piece (4) advances, the front abutting surface (411) abuts against the front triggering columns (52) to enable the two rotary shearing pieces (4) to be relatively closed; and

and the two rear triggering columns (53) are respectively positioned at the rear sides of the rear abutting surfaces (412), so that when the driving rotary shearing part (4) retreats, the rear abutting surfaces (412) abut against the rear triggering columns (53), and the two rotary shearing parts (4) are relatively opened.

4. The three-dimensional sewing template machine capable of automatically cutting threads as claimed in claim 3, characterized in that the automatic thread cutting device further comprises at least:

a trimming mounting plate (42) formed with an adjustment groove (43); the front trigger column (52) and the rear trigger column (53) are in sliding connection with the adjusting groove (43); and

the wire cutting slide block (54) is hinged with the hinged point at one side, and the rear end of the wire cutting slide block (54) is connected with the driving power source (51);

the automatic thread trimming device at least further comprises:

the upper bearing (55) is sleeved at the upper ends of the front trigger column (52) and the rear trigger column (53) and corresponds to the inclined leaning rod (41); and

and a lower bearing (56) corresponding to the thread trimming slider (54).

5. The machine according to any of the preceding claims 1 to 4, characterized in that the automatic thread trimming device is located on the path of change of the rotating shuttle member (31);

the automatic thread trimming device at least comprises a thread trimming avoiding mechanism (6) which is used for driving the automatic thread trimming device to avoid a replacing path of the rotating shuttle component (31);

wherein the trimming avoiding mechanism (6) at least comprises:

a mounting member (61) fixed to the lower thread sewing mechanism (3);

a hinge member (62) which rotates relative to the mounting member (61) and moves in synchronization with the automatic thread cutting device; and

a locking member (63) for locking or unlocking the relative positions of the mounting member (61) and the hinge member (62).

6. The machine according to claim 5, characterized in that said articulated member (62) has at least:

a hinge base (621) fixed to the mounting member (61);

a hinge plate (622) having one end hinged to the hinge base (621); and

one end of the mounting bracket (623) is fixedly connected with the other end of the hinge plate (622), and the other end of the mounting bracket (623) and the automatic thread trimming device synchronously rotate;

wherein the locking member (63) has at least:

a lock plate (631) which is rotatably disposed on the mounting bracket (623); the locking plate (631) is provided with a locking groove (632); and

a limit pin (633) passing through the mounting bracket (623) and the mounting member (61) simultaneously; and the limit pin shaft (633) corresponds to the locking groove (632), so that when the locking member (63) is in a locking state, the limit pin shaft (633) is locked in the locking groove (632).

7. The three-dimensional sewing template machine capable of automatically cutting threads as claimed in claim 1, characterized by further comprising a medium conveying device (7) for conveying a three-dimensional medium (13);

wherein the medium transport device (7) has at least:

a guide member (71) for guiding the solid medium (13) to flow toward the needle plate (22); and

a thread passing member (72) having a thread passing hole (721) through which the three-dimensional medium (13) passes;

wherein one end of the guide member (71) at least partially extends into the member mounting hole (223) of the needle plate (22) and is at least positioned on the sewing track of the bottom thread;

wherein, the wire passing component (72) at least partially extends into the component mounting hole (223) in the working state, so that the three-dimensional medium (13) passes through the wire passing hole (721).

8. The template machine for three-dimensional sewing with automatic thread trimming according to claim 7, characterized in that the automatic thread trimming device further comprises at least a feeding and trimming mechanism (9) for driving the three-dimensional medium (13) to move towards one side of the rotary trimming member (4) when the automatic thread trimming device is in operation;

wherein the shear sending mechanism (9) at least comprises:

a rotary swing arm (91) the upper end of which is connected with the wire passing member (72); and

and the shearing power source (92) is hinged with the lower end of the rotating swing arm (91) and drives the rotating swing arm (91) to swing.

9. The three-dimensional sewing template machine with automatic trimming function according to claim 8, characterized in that the feeding and trimming mechanism (9) further comprises at least:

the rotating shaft (93) penetrates through the lower end of the rotating swing arm (91) and synchronously rotates with the rotating swing arm (91); and

and one end of the rotating connecting rod (94) is connected with the rotating shaft (93), and the other end of the rotating connecting rod (94) is hinged with the shear delivery power source (92) through a joint bearing (95).

10. The machine according to claim 1, characterized in that the automatic trimming device has at least a stabilizing device (8) for stabilizing the thread passing member (72);

wherein the stabilizing device (8) has at least:

a stabilizing member (81) rotatably disposed at the lower end of the wire passing member (72); and

a stabilizing driving member (82) driving the stabilizing member (81) to approach or separate from a lower end of the wire passing member (72);

wherein the stabilizing drive member (82) has at least:

a drive joint (821) hinged at its upper end to the stabilizing member (81); and

and the stable driving power source (822) is provided with a telescopic rod (823), and the telescopic rod (823) is hinged with the other end of the driving joint (821).

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