CN213652878U

CN213652878U - Sewing machine

Info

Publication number: CN213652878U
Application number: CN202022395047.6U
Authority: CN
Inventors: 陈海发
Original assignee: Zhejiang Zoje Sewing Machine Co Ltd
Current assignee: Zhejiang Zoje Sewing Machine Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-07-09
Anticipated expiration: 2030-10-23

Abstract

The utility model provides a sewing machine, include: a guide sleeve; the needle rod is movably arranged in the guide sleeve in the axis direction; one end of the needle rod is provided with a mounting part for mounting a machine needle; the needle bar is rotatably arranged around the axis thereof; a rotating shuttle positioned below the needle bar, the rotating shuttle being rotatably disposed around a predetermined axis; the mounting seat is connected with the guide sleeve, and the mounting seat is adjustably arranged on a machine shell of the sewing machine so as to enable the preset axis to coincide with the axis of the needle rod by adjusting the position of the mounting seat on the machine shell. The utility model discloses a sewing machine has solved the unstable problem of sewing quality of the rotatable sewing machine of needle bar among the correlation technique.

Description

Sewing machine

Technical Field

The utility model relates to a sewing machine field particularly, relates to a sewing machine.

Background

In the related art, a sewing machine with a rotatable needle bar exists, the needle bar and the rotating shuttle of the sewing machine can rotate, and the needle bar and the rotating shuttle are controlled to rotate according to the supply direction of cloth in the use process of the sewing machine, so that stitches along the seam can be ensured to be sewn when the cloth is fed along different directions, and the sewing quality is improved.

However, the sewing machine in which the needle bar is rotatable in the related art is liable to cause misalignment between the needle bar and the center of the rotary hook due to problems such as assembly error, wear in use, and the like, thereby causing unstable sewing quality.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a sewing machine to solve the unstable problem of sewing quality of the rotatable sewing machine of needle bar among the correlation technique.

In order to achieve the above object, the present invention provides a sewing machine, comprising: a guide sleeve; the needle rod is movably arranged in the guide sleeve in the axis direction; one end of the needle rod is provided with a mounting part for mounting a machine needle; the needle bar is rotatably arranged around the axis thereof; a rotating shuttle positioned below the needle bar, the rotating shuttle being rotatably disposed around a predetermined axis; the mounting seat is connected with the guide sleeve, and the mounting seat is adjustably arranged on a machine shell of the sewing machine so as to enable the preset axis to coincide with the axis of the needle rod by adjusting the position of the mounting seat on the machine shell.

Further, the mounting seat comprises a connecting part, and a connecting hole is formed in the connecting part; the sewing machine further comprises a fastening piece connected with the machine shell, the fastening piece is provided with a main body part and a pressing end, the main body part is arranged in the connecting hole in a penetrating mode, and the pressing end is pressed on one surface, far away from the machine shell, of the connecting part; wherein the diameter of the connecting hole is larger than that of the circumscribed circle of the main body part.

Furthermore, one side of the mounting seat, which is far away from the machine shell, is provided with a countersunk groove, and the pressing end is positioned in the countersunk groove.

Further, the mounting seat comprises a sleeve portion connected with the connecting portion; the sleeve part is sleeved outside the guide sleeve and connected with the guide sleeve.

Further, the needle rod is provided with a threading hole which extends along the axial direction of the needle rod; the connecting part is provided with a wire passing hole which is communicated with an inner hole of the guide sleeve.

Furthermore, the connecting holes are multiple and are arranged at intervals along the circumferential direction of the sleeve part; the fastener is a plurality of, and a plurality of fasteners and a plurality of connecting hole one-to-one set up.

Furthermore, a first opening extending to the inner cavity of the guide sleeve is formed in the side wall of the guide sleeve; the needle rod is provided with a threading hole which extends along the axial direction of the needle rod, and the side wall of the needle rod is provided with a second opening which extends to the threading hole; the sewing machine comprises a blowing device, wherein the blowing device is provided with an air outlet; the first opening is inclined towards one end close to the mounting part along the direction close to the inner cavity of the guide sleeve; when the air outlet of the air blowing device is in butt joint with the first opening, air flows towards one end, close to the installation part, of the threading hole after passing through the first opening and the second opening.

Further, the sewing machine includes: the first driving device is in driving connection with the needle rod so as to drive the needle rod to rotate; the second driving device is in driving connection with the rotating shuttle so as to drive the rotating shuttle to rotate; and the controller is electrically connected with the first driving device and the second driving device so as to control the first driving device and the second driving device to synchronously act.

Further, the sewing machine comprises a first driving device for driving the needle bar to rotate, wherein the first driving device comprises a limiting piece which is rotatably arranged and is provided with a first limiting surface; the outer wall of the needle rod is provided with a second limiting surface; the first limiting surface is contacted with the second limiting surface so as to drive the needle rod to rotate through the limiting part; the second limiting surface is arranged along the axial direction of the needle rod in an extending mode, so that the needle rod can be arranged relative to the limiting piece in a sliding mode along the axial direction of the needle rod.

Further, the first driving device further includes: a first motor; the first belt wheel is connected with an output shaft of the first motor; the sleeve part is connected with the limiting part, and the needle rod penetrates through the sleeve part; a second pulley connected to the sleeve member; the first transmission belt is matched with the first belt wheel and the second belt wheel.

Use the technical scheme's sewing machine of the utility model includes: the needle bar rotating shuttle is arranged on the guide sleeve; the needle rod is movably arranged in the guide sleeve along the axial direction of the needle rod in a penetrating way; one end of the needle rod is provided with a mounting part for mounting a machine needle; the needle bar is rotatably arranged around the axis thereof; the rotating shuttle is positioned below the needle rod and is rotatably arranged around a preset axis; the mounting seat is connected with the guide sleeve, and the mounting seat is adjustably arranged on a machine shell of the sewing machine so as to enable the preset axis to be coincident with the axis of the needle rod by adjusting the position of the mounting seat on the machine shell. Through adjusting the position of mount pad on the casing for the axis coincidence of predetermined axis and needle bar, like this, can make needle bar and rotating shuttle rotate around same axis all the time, thereby guarantee the center of needle bar and align, guarantee the sewing quality, solved the unstable problem of sewing quality of the rotatable sewing machine of needle bar among the correlation technique.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic view of a partial structure of an embodiment of a sewing machine according to the present invention;

FIG. 2 is an enlarged schematic view of a partial area of the sewing machine of FIG. 1;

FIG. 3 shows an exploded view of a portion of the structure of the embodiment of the sewing machine of FIG. 2;

fig. 4 shows a schematic structural view of a mounting seat of an embodiment of the sewing machine according to the present invention;

fig. 5 shows a schematic view of an embodiment of a sewing machine according to the present invention as it is threaded;

FIG. 6 is an enlarged schematic view of a partial area of the sewing machine of FIG. 5;

fig. 7 shows a schematic view of an embodiment of a sewing machine according to the present invention.

Wherein the figures include the following reference numerals:

1. a guide sleeve; 11. a first opening; 2. a needle bar; 21. an installation part; 22. threading holes; 23. a second opening; 24. a second limiting surface; 3. a needle; 4. a rotating shuttle; 5. a mounting seat; 51. a connecting portion; 511. connecting holes; 512. a wire passing hole; 52. a sleeve portion; 6. a blowing device; 61. an air inlet pipe; 62. an air outlet pipe; 63. a valve; 7. a first driving device; 71. a limiting member; 72. a first motor; 73. a first pulley; 74. a sleeve member; 75. a second pulley; 76. a first drive belt; 8. a second driving device; 81. a second motor; 82. a third belt pulley; 83. a drive shaft; 84. a fourth pulley; 85. a second belt; 9. a rotating shuttle mounting seat; 100. a housing; 200. and (4) sewing.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 7, the present invention provides a sewing machine, including: a guide sleeve 1; the needle bar 2 is movably arranged in the guide sleeve 1 in a penetrating way along the axial direction; one end of the needle bar 2 is provided with a mounting part 21 for mounting the needle 3; the needle bar 2 is rotatably arranged around its axis; a rotary shuttle 4 located below the needle bar 2, the rotary shuttle 4 being rotatably provided around a predetermined axis; a mounting seat 5, the mounting seat 5 is connected with the guide sleeve 1, and the mounting seat 5 is arranged on the shell 100 of the sewing machine in a position adjustable mode, so that the preset axis is coincident with the axis of the needle bar 2 by adjusting the position of the mounting seat 5 on the shell 100.

The utility model discloses a sewing machine includes: the needle bar 2 comprises a guide sleeve 1, a needle bar 2 rotating shuttle 4 and a mounting seat 5; the needle bar 2 is movably arranged in the guide sleeve 1 along the axial direction; one end of the needle bar 2 is provided with a mounting part 21 for mounting the needle 3; the needle bar 2 is rotatably arranged around its axis; the rotating shuttle 4 is positioned below the needle bar 2, and the rotating shuttle 4 is rotatably arranged around a preset axis; the mount 5 is connected to the guide sleeve 1, and the mount 5 is position-adjustably provided on the housing 100 of the sewing machine so that a predetermined axis coincides with the axis of the needle bar 2 by adjusting the position of the mount 5 on the housing 100. Through adjusting the position of mount pad 5 on casing 100 for the axis coincidence of predetermined axis and needle bar 2 can make needle bar 2 and rotating shuttle 4 rotate around same axis all the time, thereby guarantees that the center of needle bar aligns, guarantees the sewing quality, has solved the unstable problem of sewing quality of the rotatable sewing machine of needle bar among the correlation technique.

Specifically, the mounting base 5 includes a connecting portion 51, and a connecting hole 511 is provided on the connecting portion 51; the sewing machine further comprises a fastening piece connected with the machine shell 100, wherein the fastening piece is provided with a main body part and a pressing end, the main body part is arranged in the connecting hole 511 in a penetrating way, and the pressing end is pressed on one surface of the connecting part 51, which is far away from the machine shell 100; wherein the diameter of the connection hole 511 is larger than the diameter of the circumscribed circle of the body part.

By adopting the above arrangement, a certain gap is formed between the connection hole 511 and the main body portion of the fastener, and the existence of the gap enables the mounting base 5 to move in a certain range relative to the fastener, thereby realizing the function of adjusting the position of the mounting base 5.

Of course, the structure capable of adjusting the position of the mount 5 is not limited to the above structure, and other structures capable of adjusting the position of the mount 5 with respect to the cabinet 100 may be used. For example, a plurality of connection holes are provided on the mounting base 5 and/or the cabinet 100, and the position of the mounting base 5 is adjusted by changing the positions of the connection holes through which the fastening members pass. For another example, a strip-shaped hole is formed in the mounting seat 5 and/or the casing 100, the fastener is arranged in the strip-shaped hole in a penetrating manner, and the position of the mounting seat 5 is adjusted by adjusting the position of the fastener in the strip-shaped hole. Preferably, the mounting base 5 and the casing 100 are both provided with strip-shaped holes, the extending directions of the two strip-shaped holes are perpendicular, and the positions of the fasteners in the two strip-shaped holes are both adjustably arranged.

Specifically, one side of the mounting seat 5 away from the casing 100 is provided with a countersunk groove, and the pressing end is located in the countersunk groove.

In specific implementation, the size of the countersunk groove is larger than that of the pressing end, so that the pressing end can change positions in the countersunk groove to adapt to the position adjustment of the mounting seat 5.

Specifically, the mount 5 includes a sleeve portion 52, the sleeve portion 52 being connected with the connecting portion 51; the sleeve portion 52 is fitted around the outside of the guide bush 1 and connected to the guide bush 1.

In practical implementation, the connection between the sleeve portion 52 and the guide sleeve 1 may be various, such as interference fit, adhesion, screw connection, etc. Through set up sleeve portion 52 on mount pad 5 to make sleeve portion 52 cover establish in the outside of uide bushing 1, can provide stable supporting effect for uide bushing 1, guarantee the stability in uide bushing 1 position, thereby avoid sewing machine during operation uide bushing 1 to rock, guarantee the sewing quality.

Specifically, the needle bar 2 has a threading hole 22 extending along an axial direction thereof; the connecting part 51 is provided with a wire passing hole 512, and the wire passing hole 512 is communicated with an inner hole of the guide sleeve 1.

With the above arrangement, the suture thread 200 can be smoothly inserted into the guide sleeve 1 through the thread passing hole 512, and the suture thread 200 can be inserted through the thread passing hole 22 of the needle bar 2.

Specifically, the connection holes 511 are plural, and the plural connection holes 511 are arranged at intervals in the circumferential direction of the sleeve portion 52; the fastening member is provided in plural, and the plural fastening members are provided in one-to-one correspondence with the plural connection holes 511.

Specifically, the side wall of the guide sleeve 1 is provided with a first opening 11 extending to the inner cavity of the guide sleeve; the needle bar 2 is provided with a threading hole 22 extending along the axial direction of the needle bar, and the side wall of the needle bar 2 is provided with a second opening 23 extending to the threading hole 22; the sewing machine comprises a blowing device 6, wherein the blowing device is provided with an air outlet; wherein, along the direction close to the inner cavity of the guide sleeve 1, the first opening hole 11 inclines towards one end close to the mounting part 21; so that the gas flows toward the end of the threading hole 22 close to the mounting portion 21 after passing through the first opening 11 and the second opening 23 when the gas outlet of the gas blowing device 6 is butted against the first opening 11.

Specifically, the sewing machine includes: a first driving device 7, the first driving device 7 is connected with the needle bar 2 in a driving way to drive the needle bar 2 to rotate; the second driving device 8, the second driving device 8 is connected with the rotating shuttle 4 in a driving way, so as to drive the rotating shuttle 4 to rotate; and the controller is electrically connected with the first driving device 7 and the second driving device 8 so as to control the first driving device 7 and the second driving device 8 to synchronously act.

Specifically, the sewing machine includes a first driving device 7 for driving the needle bar 2 to rotate, the first driving device 7 includes a rotatably disposed stopper 71, and the stopper 71 has a first stopper surface; a second limiting surface 24 is arranged on the outer wall of the needle rod 2; the first limit surface is contacted with the second limit surface so as to drive the needle bar 2 to rotate through the limit piece 71; the second limit surface 24 extends along the axial direction of the needle bar 2, so that the needle bar 2 is slidably disposed relative to the limit member 71 along the axial direction.

Specifically, the first driving device 7 further includes: a first motor 72; a first pulley 73 connected to an output shaft of the first motor 72; a sleeve member 74 connected to the stopper member 71, the needle rod 2 being inserted into the sleeve member 74; a second pulley 75 connected to the sleeve member 74; a first belt 76 is engaged with both the first pulley 73 and the second pulley 75.

In addition, the rotary hook 4 is provided on the rotary hook mounting seat 9, and the second driving device 8 includes a second motor 81; a third pulley 82 connected to an output shaft of the second motor 81; a drive shaft 83 connected to the rotating shuttle mounting base 9; a fourth pulley 84 connected to the driving shaft 83; and a second belt 85 engaged with both the third pulley 82 and the fourth pulley 84.

The air blowing device 6 includes an air inlet pipe 61, an air outlet pipe 62, and a valve 63 connecting the two.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewing machine, comprising:

a guide sleeve (1);

the needle rod (2) is movably arranged in the guide sleeve (1) in a penetrating way along the axis direction; one end of the needle rod (2) is provided with a mounting part (21) for mounting a machine needle (3); the needle bar (2) is rotatably arranged around the axis thereof;

a rotary shuttle (4) located below the needle bar (2), the rotary shuttle (4) being rotatably disposed about a predetermined axis;

the mounting seat (5), the mounting seat (5) with uide bushing (1) is connected, mounting seat (5) position adjustable sets up on sewing machine's casing (100) to through adjusting the position of mounting seat (5) on casing (100) so that predetermined axis with the axis coincidence of needle bar (2).

2. The sewing machine according to claim 1, characterized in that the mounting seat (5) comprises a connecting portion (51), the connecting portion (51) being provided with a connecting hole (511);

the sewing machine further comprises a fastening piece connected with the machine shell (100), the fastening piece is provided with a main body part and a pressing end, the main body part is arranged in the connecting hole (511) in a penetrating mode, and the pressing end is pressed on one surface, far away from the machine shell (100), of the connecting part (51);

wherein the diameter of the connection hole (511) is larger than the diameter of the circumscribed circle of the main body part.

3. Sewing machine as in claim 2, characterized in that the side of said mounting (5) remote from said cabinet (100) is provided with a countersunk groove in which said presser foot is located.

4. The sewing machine according to claim 2, characterized in that the mounting seat (5) comprises a sleeve portion (52), the sleeve portion (52) being connected with the connecting portion (51); the sleeve portion (52) is sleeved outside the guide sleeve (1) and connected with the guide sleeve (1).

5. Sewing machine as in claim 4, characterized in that said shank (2) has a threading hole (22) extending axially along it; the connecting part (51) is provided with a wire passing hole (512), and the wire passing hole (512) is communicated with an inner hole of the guide sleeve (1).

6. The sewing machine according to claim 4, wherein the attachment hole (511) is plural, and plural attachment holes (511) are arranged at intervals in a circumferential direction of the sleeve portion (52); the number of the fasteners is multiple, and the fasteners and the connecting holes (511) are arranged in a one-to-one correspondence mode.

7. Sewing machine as in claim 1, characterized in that the side wall of the guide sleeve (1) is provided with a first opening (11) extending to its inner cavity; the needle rod (2) is provided with a threading hole (22) extending along the axial direction of the needle rod, and a second open hole (23) extending to the threading hole (22) is formed in the side wall of the needle rod (2); the sewing machine comprises a blowing device (6) which is provided with an air outlet;

wherein, along the direction close to the inner cavity of the guide sleeve (1), the first opening (11) inclines towards one end close to the mounting part (21); when the air outlet of the air blowing device (6) is in butt joint with the first opening (11), air flows towards one end, close to the mounting portion (21), of the threading hole (22) after passing through the first opening (11) and the second opening (23).

8. The sewing machine according to any one of claims 1 to 7, characterized in that the sewing machine comprises:

a first drive device (7), wherein the first drive device (7) is in drive connection with the needle bar (2) to drive the needle bar (2) to rotate;

a second driving device (8), wherein the second driving device (8) is in driving connection with the rotating shuttle (4) to drive the rotating shuttle (4) to rotate;

and the controller is electrically connected with the first driving device (7) and the second driving device (8) so as to control the first driving device (7) and the second driving device (8) to synchronously act.

9. The sewing machine according to any of claims 1 to 7, characterized in that the sewing machine comprises a first drive device (7) for driving the needle bar (2) in rotation, the first drive device (7) comprising a rotatably arranged limit member (71), the limit member (71) having a first limit surface; a second limiting surface (24) is arranged on the outer wall of the needle rod (2); the first limiting surface is contacted with the second limiting surface so as to drive the needle rod (2) to rotate through the limiting piece (71); wherein the second limiting surface (24) is arranged along the axial direction of the needle rod (2) in an extending way, so that the needle rod (2) can be arranged relative to the limiting piece (71) in a sliding way along the axial direction.

10. The sewing machine according to claim 9, characterized in that the first drive means (7) further comprise:

a first motor (72);

a first pulley (73) connected to an output shaft of the first motor (72);

the sleeve part (74) is connected with the limiting part (71), and the needle rod (2) is arranged in the sleeve part (74) in a penetrating mode;

a second pulley (75) connected to the sleeve member (74);

a first drive belt (76) cooperating with both the first pulley (73) and the second pulley (75).