TWI406988B - Positioning device for adjusting the direction of a sewing machine seam - Google Patents

Abstract

A positioning device for adjusting the direction of a sewing machine seam, which is used to adjust an automatic sewing machine and to maintain a better seam direction of sewing products, and such a positioning device is a ring-shaped transmission member driven by a driving member of a driving unit, so as to make the transmission member and the sewing products which are disposed at a center of the transmission member rotate and move simultaneously. Thereby, the sewing machine can operate along a better seam direction, thus quickly providing the sewing products with high quality. Moreover, such a positioning device utilizes ratchets to achieve precise, intermittent and quick movement, which can reduce the cost and is applicable to different kinds of sewing machines.

Description

Sewing machine positioning direction positioning device

The present invention relates to an automated sewing machine, and more particularly to a sewing machine that effectively controls the sewing direction by a program to effectively improve the precision of the seam.

The program-controlled sewing machine is generally used to embroider complex patterns to replace the manual operation to improve the quality of the embroidery pattern, or to sew buttons, decorations and other items in the sewing product, which has the advantages of improving the processing speed and sewing precision. Advantages; the conventional program controls the sewing machine mainly by setting a fixture on the working platform to fix the sewing product to be processed, and the fixture passes through a moving device to correspond to the sewing head of the sewing machine on the working platform. The two-dimensional movement is performed, so that the sewing product is displaced with the jig to achieve the purpose of embroidering the pattern or sewing the object.

When the conventional program-controlled sewing machine is actually used, since the needle head is designed to work only on the sewing article from a single direction, so that the sewing article must be inserted into the needle head from the specific direction and relative to the needle, The thread from the upper part of the sewing machine can form a coil reliably, and together with the thread from the lower thread of the sewing machine, form a high-quality lock stitch seam; but the conventional sewing machine makes the sewing product move two-dimensionally on the working platform. At this time, the sewing article may approach the bur of the sewing machine from any direction of the two-dimensional plane, resulting in a situation in which the sewing quality is liable to occur due to inaccurate stitching or skewing of the stitch during the sewing process.

In order to improve the above problems, the inventor proposes "U.S. Patent No. 4,498,404", which mainly replaces the two-dimensional moving mobile device with a mechanical arm having three rotating contacts, so that the sewing article is the machine. The arm is controlled to rotate between the bur and the work platform to maintain the needle head from the specific direction. In addition, the inventor proposed "Italian patent B093A 000113" for the above problem, which is provided with a needle bar having a bur above the needle plate of the needle head, and a bobbin having a wire hook at the bottom, which is passed through the needle The rod rotates simultaneously with the spool, so that the relative positions of the needle and the hook are unchanged, so that the sewing product can be placed in the specific direction regardless of the movement.

However, the above solutions to the problem still have the following problems in practical applications:

1. Since the automated sewing machine must intermittently move the sewing article at a very small distance for sewing work, the robot arm for moving the sewing product must accurately control the sewing machine with rapid acceleration. The moving distance of the product causes the manufacturing cost and maintenance cost of the robot arm to be high, and it is difficult to meet the requirements of the industry for reducing the overall cost.

2. At present, the automatic sewing machine has a plurality of models, and the positioning device that rotates the needle shaft and the bobbin at the same time so that the relative positions of the needle and the hook are not changed is not suitable for a cylindrical table sewing machine ( Cylinder bed head), etc., so it is still difficult to solve The problem of positioning in the sewing direction of the sewing machine is decided.

In view of the above-mentioned problems of use, the inventors of the present invention considered that it is necessary to design and manufacture, maintain low maintenance cost, high sewing precision, and can be applied to the sewing direction positioning device of various automatic sewing machines.

Therefore, in order to achieve the above object, the present invention provides a sewing machine positioning device for a sewing machine, which is mainly provided with a ring-shaped transmission member on a substrate, and the transmission member is driven by a driving unit on the substrate. Positioning rotation, a sewing product is fixed on the transmission member and corresponds to the needle of a needle head, so that when the transmission member drives the sewing product to rotate, the sewing direction of the needle is positive with the rotation direction of the sewing product Cut state.

By way of this, the positioning device is configured to align the sewing direction of the sewing product, so that the automatic sewing machine can adjust and keep the sewing product in a better sewing direction, so as to provide a sewing product with rapid production and high quality; The positioning device achieves high-accuracy intermittent rapid movement by the ratcheting of the transmission member and the driving member, thereby having the advantages of low manufacturing cost and maintenance cost, and is suitable for various sewing machines.

In order to enable your review committee to have a better understanding and understanding of the purpose, features and effects of the present invention, please refer to the following [simplified description of the drawings] for details:

First, with reference to FIG. 1 , FIG. 2 is a preferred embodiment of a sewing machine positioning device for a sewing machine. The sewing direction positioning device is mainly provided with a transmission member 20 on a substrate 10 and A plate body 30 is disposed inside the transmission member 20 and is provided with a sewing product A. The substrate 10 is provided with a sliding bracket 40 and a driving unit 50. The substrate 10 is a rectangular plate. The body structure has an opening 11 formed in the center, and a flange 12 is formed along the periphery of the opening 11; the board surface of the substrate 10 is defined as an XY plane and has an X direction and a Y direction; in this embodiment, As shown in FIG. 1 , the substrate 10 is provided with two protrusions 13 on one side of the opening 11 and adjacent to one of the corner ends. The transmission member 20 is formed in a hollow annular structure having a thickness corresponding to the substrate 10 . The opening 11 is provided; as shown in FIG. 2, the transmission member 20 is concavely provided with a circular recess 21 and a receiving opening 211 recessed from the bottom surface of the recess 21 to form a circular shape, and the plurality of positioning pins 212 are recessed. Protruding at the bottom of the groove of the groove 21 and around the receiving opening 211; the groove 21 is extended from the slot thereof A looping portion 22 is formed, and the looping portion 22 defines a ring recess 221 along the periphery of the transmission member 20, so that the ring recess 221 and the recess 21 are formed in a concave recess shape, and the recess 21 is formed by The groove wall is spaced apart from the ring groove 221; the transmission member 20 is disposed on the outer circumferential surface of the buckle portion 22 and has a ratchet-shaped transmission tooth surface 23; the transmission member 20 corresponds to the ring groove 221 thereof. The abutting edge 12 of the substrate 10 is disposed, and the flange 12 is correspondingly received in the ring groove 221, and an annular bearing 24 is disposed between the flange 12 and the ring groove 221, so that the transmission member 20 is provided. The rotator 12 has a relative rotation with the rim 12; in the embodiment, the transmission member 20 has four locating pins 212 disposed at intervals; the plate 30 has a circular plate structure and is correspondingly received. In the recess 21 of the transmission member 20, a plurality of pivoting ears 31 are disposed on the circumferential side of the plate body 30, and each of the pivoting ears 31 defines a pivot hole 311. The plate body 30 corresponds to the plurality of pivoting ears 31. The plurality of positioning pins 212 of the transmission member 20 are disposed such that the transmission member 20 passes through the plurality of positioning pins 212 through the pivot hole 311 of the plate body 30, and the plate body 30 is fixed to the transmission member 20. In the embodiment, the plate body 30 has four pivoting ears 31 corresponding to the positioning pins 212. The sliding bracket 40 is disposed on the first embodiment as shown in FIG. The XY plane is fixed on one side of the substrate 10 perpendicular to the Y direction. The sliding bracket 40 has a long convex structure with a central protrusion, and a convex plate 41 is protruded from the top surface of the top surface. The sliding bracket 40 protrudes from the side surface of the substrate 10 adjacent to the protrusion 13 of the substrate 10 in the Y direction, and a corresponding opening 42 is formed in the Y direction. In this embodiment, the sliding bracket 40 is slidably displaced in the Y direction on the XY plane through a linear rail device (not shown), and is disposed close to the substrate 10 or away from the substrate 10. The driving unit 50 is disposed on the sliding bracket 40 in the embodiment as shown in FIG. 1; the driving unit 50 has a servo motor 51 disposed above the shelf 41, and a driving unit. The shaft 511 is disposed under the servo motor 51 and extends through the frame 41. The end of the drive shaft 511 is coupled to a driving member 52. The driving member 52 is In the embodiment, the driving member 52 has a ratchet gear structure on the outer peripheral surface, and the end of the driving shaft 511 is fixed at the center of the driving member 52; the driving member 52 is located on the XY plane. And protruding from the opening 42 of the sliding bracket 40, and the ratchet teeth corresponding to the transmission tooth surface 23 of the transmission member 20; the control unit 60, as shown in Figures 1, 3A, 3B The control unit 60 has a control member 61 and an elastic member 62. The control member 61 has a ㄇ-shaped structure and has three segments, one in sequence. The operating section 611, a connecting section 612 and a latching section 613 are pivotally connected to the stud 13 adjacent to the transmission member 20 by the connecting portion of the operating section 611 and the connecting section 612, so that the operating section 611 And the latching portion 613 extends substantially in the X direction toward the transmission member 20, and the end of the latching portion 613 has a toothed structure; the elastic member 62 has an L-shaped linear body bent structure and has two segments. , a fixed section 621 and a blocking section 622 are respectively formed, and a joint of the fixing section 621 and the abutting section 622 is formed to form a pivot hole 623. The fixing member 62 is pivotally disposed on the protruding post 13 adjacent to the transmission member 20, and the end of the fixing portion 621 of the elastic member 62 is fastened against the protruding post 13 away from the transmission member 20. The end of the 622 is fastened to the side of the connecting portion 612 of the control member 61. If, as shown in FIG. 3A, when the substrate 10 is away from the sliding bracket 40, the connecting portion 512 of the control member 51 is The abutting portion 622 of the elastic member 52 is biased, and the end of the locking portion 613 of the control member 51 and the driving tooth surface 24 of the transmission member 20 are in a locked state, and the driving member 52 of the driving unit 50 and the transmission The member 20 is separated, so that the transmission member 20 is positioned for the control member 61; as shown in FIG. 3B, when the substrate 10 is adjacent to the sliding bracket 40, the operating portion 51 of the control member 51 is the sliding bracket. The end of the latching portion 613 of the control member 51 is disengaged from the driving tooth surface 24 of the transmission member 20, and the driving member 52 of the driving unit 50 is ratcheted with the transmission member. The drive tooth surface 23 of 20 is engaged such that the drive member 20 drives the drive member 52 to rotate.

The above description is the main components of the embodiment of the present invention and the configuration description thereof; it is worth mentioning that the present invention provides another embodiment, and the configuration structure thereof is as follows: Please refer to the figures 4 and 5 In the embodiment, the transmission member 20 is provided with a driven belt 25 on the outer circumferential surface of the buckle portion 22, and a transmission belt 53 is wound around the belt surface of the transmission belt 25 and the driving member 52 of the driving unit 50. For the purpose of rotating the transmission member 20, the substrate 10 is provided with a support plate 14 at a corner end thereof higher than the XY plane; the servo motor 51 of the drive unit 50 is threaded and fixed to the support plate 14. The driving member 52 is interlocked with the driving shaft 511 under the servo motor 51, and the driving member 52 has a belt surface corresponding to the driven belt 25 of the transmission member 20 with its outer peripheral surface, so that the transmission belt 53 is wound around the transmission. The driving member 52 drives the driving member 20 to rotate on the substrate 10 through the driving belt 53. In this embodiment, the driving member 52 is driven to rotate on the substrate 10; The driven belt 25 and the belt 53 are a timing belt, which is transmitted through The surface contacts disposed ratchet teeth intermesh and achieve the purpose of the transmission.

Referring to Fig. 6, the main embodiment will be used to explain the use and operation of the sewing direction positioning device of the sewing machine of the present invention in conjunction with the needle 71 of a needle head 70. As shown in FIG. 6, the sliding bracket 40 is in a state of being close to the substrate 10, and the sewing article A is fixed to the board 30 and corresponds to the needle 7 of the needle head 70, and the needle is 71. The preset sewing direction extends along the Y direction, and the driving unit 20 is driven to rotate by the ratchet structure, and the sewing product A is rotated clockwise, so that the sewing is performed. The direction and the direction of rotation of the sewing product A are maintained in a tangential state during the sewing process; if the sewing direction of the sewing machine is fixedly maintained, the sewing machine can work in the direction of the preferred sewing direction and provide rapid production while simultaneously High-quality sewing products; in addition, since the positioning device of the present invention achieves high-accuracy intermittent rapid movement with ratcheting, the positioning device has low manufacturing cost and low maintenance cost, and is suitable for various sewing machines. The advantages of Taiwan.

10. . . Substrate

11. . . Opening

12. . . Reach

13. . . Tab

14. . . Pallet

20. . . Transmission Parts

twenty one. . . Groove

211. . .容口

212. . . Locating pin

twenty two. . . Buckle

221. . . Ring groove

twenty three. . . Transmission tooth surface

twenty four. . . Ring bearing

25. . . Driven belt

30. . . Plate body

31. . . Pivot

311. . . Pivot hole

40. . . Sliding bracket

41. . . Shelf

42. . . Port

43. . . Reaching the column

50. . . Drive unit

51. . . Servo motor

511. . . Drive shaft

52. . . Drive

53. . . Transmission belt

60. . . control unit

61. . . Control

611. . . Operation segment

612. . . Connection segment

613. . . Card section

62. . . Elastic part

621. . . Fixed section

622. . . Blocking section

623. . . Pivot hole

A‧‧‧Sewing products

X‧‧‧ direction

Y‧‧‧ direction

Figure 1 is a schematic view of a three-dimensional combination of the present invention.

Fig. 2 is a schematic cross-sectional view showing the combination of the present invention.

Fig. 3A is a schematic view showing the structure of the sliding bracket of the present invention away from the substrate.

Fig. 3B is a schematic view showing the structure of a sliding carriage driving substrate of the present invention.

Figure 4 is a schematic perspective view of another embodiment of the present invention.

Figure 5 is a schematic cross-sectional view showing another embodiment of the present invention.

Figure 6 is a schematic view showing the state of use of the present invention.

10. . . Substrate

20. . . Transmission Parts

twenty one. . . Groove

212. . . Locating pin

twenty two. . . Buckle

twenty three. . . Transmission tooth surface

30. . . Plate body

31. . . Pivot

311. . . Pivot hole

40. . . Sliding bracket

41. . . Shelf

42. . . Port

43. . . Reaching the column

50. . . Drive unit

51. . . Servo motor

511. . . Drive shaft

52. . . Drive

60. . . control unit

61. . . Control

62. . . Elastic part

A. . . Sewing products

X. . . direction

Y. . . direction

Claims (6)

A sewing machine positioning device for sewing machine, the sewing machine is provided with a bur, wherein the positioning device comprises: a substrate having a rectangular plate structure, an opening is formed in the center, and the opening is convexly formed along the periphery thereof to form a flange a transmission member having a ring-shaped structure, wherein the central recess is provided with a groove extending outwardly from the slot to form a buckle portion, and the buckle portion is formed along the circumference of the transmission member and the groove a ring groove having a concave recess, such that the transmission member is disposed with the ring groove corresponding to the abutting edge of the substrate, and the abutting edge is correspondingly received in the ring groove, the abutting edge and the ring groove An annular bearing is disposed between the transmission member and the abutting member, and a sewing product is fixed on the bottom surface of the groove and corresponds to the stylus; a driving unit has a The servo motor is connected to a driving shaft, and the driving shaft is provided with a driving member having a disc structure, and the center of the driving member is fixed to the end of the driving shaft and disposed on the peripheral side of the transmission member; the driving member and the transmission are arranged Piece link, the servo motor drives the drive The transmission rotation member interlocked and movable with the sewing products therewith, a needle sewing direction the vehicle was swirled state tangent direction of the sewn article. The sewing direction positioning device of the sewing machine according to the first aspect of the invention, wherein the transmission member is recessed from the bottom surface of the groove to form a receiving opening, and the plurality of positioning pins are protruded from the groove bottom and located at the bottom of the groove A slab is disposed in the accommodating port, and a plurality of pivoting ears are disposed on a circumferential side thereof; The plate body is fixed by a plurality of locating pins of the transmission member with its plurality of pivots. The sewing direction positioning device of the sewing machine according to the first aspect of the invention, wherein the outer peripheral surface of the transmission member is annularly formed with a transmission tooth surface; the driving unit is disposed on a sliding bracket, the sliding bracket a plate is protruded from the center of the top surface, and a supporting column and a pair of openings for opening the frame are disposed on a side of the substrate; the servo motor is disposed above the frame, and the driving shaft penetrates the The frame plate is fixed to the driving member, and the outer peripheral surface of the driving member has a ratchet tooth, so that the driving member protrudes from the opening of the sliding bracket, and the ratchet teeth correspond to the transmission of the transmission member Tooth surface meshing drive. The sewing direction positioning device of the sewing machine according to the third aspect of the invention, wherein the substrate is provided with two protrusions and a control unit corresponding to the sliding bracket abutting the column; the control unit has a control part And an elastic member, the control member has an operating portion, a connecting portion and a latching portion, and the control member is pivotally disposed at a joint of the operating portion and the connecting portion adjacent to the protruding post of the transmission member, so that the The operating section and the latching section extend toward the transmission member, and the end of the latching section has a toothed structure; the elastic component is an L-shaped linear body bending structure having a fixed section and a blocking section, the fixing A pivot hole is formed around the intersection of the segment and the abutting portion, and the elastic member is pivotally disposed on the protruding column adjacent to the transmission member, so that the end of the fixing portion of the elastic member is fastened away from the transmission member. The end of the abutting portion is fastened to the side of the connecting portion of the control member; if the substrate is away from the sliding bracket, the control member The connecting portion is biased against the abutting portion of the elastic member, and the end of the locking portion of the control member is in a latching state with the driving tooth surface of the transmission member, so that the transmission member is positioned for the control member; When the substrate is adjacent to the sliding bracket, the operating portion of the control member is biased against the abutting force of the sliding bracket, and the end of the locking portion of the control member is disengaged from the driving tooth surface of the transmission member. The sewing direction positioning device for a sewing machine according to claim 3, wherein the sliding bracket is driven to be in a state of being close to or away from the substrate through a linear rail device. The sewing machine positioning device of the sewing machine according to the first aspect of the invention, wherein the substrate is further provided with a pallet; the transmission member is provided with a driven belt on the outer circumferential surface; the servo motor of the driving unit is fastened. Provided on the pallet, and the driving member has an outer peripheral surface corresponding to the driven belt surface of the transmission member, a driving belt is wound around the transmission member and the driving member, and the servo motor drives the driving member to rotate The driving belt drives the transmission member to rotate on the substrate.