CN214115913U - Needle bar guiding device and sewing machine - Google Patents
Needle bar guiding device and sewing machine Download PDFInfo
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- CN214115913U CN214115913U CN202022615036.4U CN202022615036U CN214115913U CN 214115913 U CN214115913 U CN 214115913U CN 202022615036 U CN202022615036 U CN 202022615036U CN 214115913 U CN214115913 U CN 214115913U
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- needle bar
- guide
- sleeve
- rotary
- hole
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Abstract
The utility model relates to a sewing machine accessory field particularly, relates to a needle bar guider and sewing machine. The needle bar guiding device comprises a driving device, a rotary guiding sleeve and a guiding pin; the driving device is connected with the rotary guide sleeve and is used for driving the rotary guide sleeve to rotate; the rotary guide sleeve is provided with a guide hole, the guide pin is arranged in the guide hole, and one end of the guide pin is arranged corresponding to the rotary guide surface of the needle rod and is used for driving the needle rod to rotate. The sewing machine comprises a needle bar and the needle bar guiding device; the needle rod is provided with a rotary guide surface; the needle bar is arranged in the rotary guide sleeve in a sliding mode and can rotate under the driving of the driving device. The utility model discloses realize carrying out turning to of needle bar at the in-process of sewing, only a stitch can appear in sewing at last, improved off-the-shelf aesthetic property.
Description
Technical Field
The utility model relates to a sewing machine accessory field particularly, relates to a needle bar guider and sewing machine.
Background
In the existing sewing machine, the needle bar is directly fixed on the connecting rod, and the connecting rod directly drives the needle bar to lift up and down, so that the sewing function is realized.
When sewing is carried out, stitches with various patterns can be used, and then different stitches are needed to be realized, forward stitches and reverse stitches can appear in different stitches, and the appearance of finished products such as sewn clothes is not attractive enough due to the fact that the stitches are different.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a needle bar guider and sewing machine, it can only appear forward stitch seam or reverse stitch seam when using the stitch of different flower types, has improved off-the-shelf aesthetic property.
The technical scheme of the utility model is like this:
in a first aspect, the present invention further provides a needle bar guiding device, which comprises a driving device, a rotary guiding sleeve and a guiding pin;
the driving device is connected with the rotary guide sleeve and is used for driving the rotary guide sleeve to rotate;
the rotary guide sleeve is provided with a guide hole, the guide pin is arranged in the guide hole, and one end of the guide pin is arranged corresponding to the rotary guide surface of the needle rod and is used for driving the needle rod to rotate.
Preferably, a bearing is arranged on the outer wall of the rotary guide sleeve.
Preferably, the rotary guide sleeve comprises a blocking ring part and a sleeve part which are coaxially arranged, the blocking ring part is arranged at one end of the sleeve part, and the diameter of the blocking ring part is larger than that of the sleeve part;
the bearing is provided on an outer wall of the sleeve portion.
Preferably, the other end of the sleeve portion is provided with a retaining ring for positioning the bearing.
Preferably, an adjusting gap is arranged on the retainer ring, and the adjusting gap is used for changing the inner diameter of the retainer ring.
Preferably, the retainer ring is provided with a threaded hole, and the threaded hole is arranged corresponding to the guide hole;
the thread adjusting rod is matched with the threaded hole and can be inserted into the guide hole to be abutted against the guide pin.
Preferably, the threaded adjusting rod is a screw or a bolt.
Preferably, the rotary guide sleeve is provided with a fixed connecting hole.
In a second aspect, the present invention further provides a sewing machine, comprising a needle bar and the needle bar guide device of any one of the above;
the needle rod is provided with a rotary guide surface;
the needle bar is arranged in the rotary guide sleeve in a sliding mode and can be driven by the driving device to rotate.
Preferably, the rotation guide surface is a plane.
The utility model has the advantages that:
through the rotation guide surface counterbalance of guide pin and needle bar, when the drive device drives the rotation guide sleeve to rotate, the rotation guide sleeve drives the guide pin to rotate, and then the needle bar is driven to rotate, and the guide pin is in clearance fit with the guide plane, so that the rotation guide sleeve can drive the needle bar to rotate without influencing the axial movement of the needle bar. The driving device is matched with other parts of the sewing machine, so that the needle bar can be turned in the sewing process, only one stitch can be formed in the sewing process, and the attractiveness of finished products is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic perspective view of a needle bar according to an embodiment of the present invention;
fig. 2 is a front view of a needle bar guide device according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
fig. 5 is a schematic perspective view of a needle bar guiding device according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a rotary guide sleeve of the needle bar guide device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a retainer ring of the needle bar guide device according to the embodiment of the present invention.
Description of the main element symbols: 1-a needle bar; 11-a rotating guide surface; 2-rotating the guide sleeve; 3-a bearing; 4-a retainer ring; 5-a threaded adjusting rod; 6-a nut; 7-a guide pin; 8-fixing the bolt; 21-a retaining ring portion; 22-a sleeve portion; 23-a pilot hole; 24-a via hole; 25-fixing the connection hole; 41-a threaded hole; 42-an inner ring; 43-adjusting the gap; 44-locking hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the present invention will be described in detail below with reference to fig. 1 to 7. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The utility model also provides a needle bar guiding device, as shown in fig. 2-5, which comprises a driving device, a rotary guiding sleeve 2 and a guiding pin 7; the driving device is connected with the rotary guide sleeve 2 and is used for driving the rotary guide sleeve 2 to rotate; the rotary guide sleeve 2 is provided with a guide hole 23, the guide pin 7 is arranged in the guide hole 23, and one end of the guide pin 7 is arranged corresponding to the rotary guide surface 11 of the needle bar 1 and is used for driving the needle bar 1 to rotate.
In this embodiment, the guide pin 7 is disposed in the guide hole 23, and the inner end of the guide pin 7 is engaged with the rotation guide surface 11 of the needle bar 1, and when the driving means drives the rotary guide sleeve 2 to rotate about the axis of the needle bar 1, the needle bar 1 is driven to rotate by the guide pin 7.
In this embodiment, the guide pin 7 and the guide hole 23 are in a transition fit or an interference fit, so that the guide pin 7 can be prevented from being disengaged from the guide hole 23.
The guide pin 7 may be in clearance fit with the guide hole 23, and in this case, a blocking member needs to be disposed at an end of the guide pin 7 away from the needle bar 1, that is, an outer end of the guide pin 7, such as a plug, to fix the guide pin 7 and prevent the guide pin 7 from being separated from the guide hole 23.
In the present embodiment, a through hole 24 is provided in the rotary guide sleeve 2, and the needle bar 1 can move axially in the through hole 24 after passing through the through hole 24, that is, during the operation of the sewing machine, when the needle bar 1 moves up and down, the rotary guide sleeve 2 only rotates, but does not move axially.
In this embodiment, the through-hole 24 of the rotary guide housing 2 is a circular hole, which facilitates the assembly of the needle bar 1.
It should be noted that the through hole 24 may be a circular hole, or may be another hole structure such as a square hole, as long as the assembly between the rotary guide sleeve 2 and the needle bar 1 can be achieved.
In this embodiment, the rotation power of the rotary guiding sleeve 2 comes from the driving device, and the driving device has a plurality of driving manners, for example, a motor may be used to drive the gear, or the motor may be used to drive the rotary guiding sleeve 2 to rotate through a belt or a chain, or other driving manners such as an air cylinder, a hydraulic cylinder, etc. provide power, and then the linear movement is converted into the rotation of the rotary guiding sleeve 2 through the power direction conversion, that is, as long as the driving device can drive the rotary guiding sleeve 2 to rotate.
Preferably, in the present embodiment, the outer wall of the rotary guide sleeve 2 is provided with a bearing 3.
Specifically, in this embodiment, the outer wall of the rotary guide sleeve 2 is in transition fit or interference fit with the inner ring 42 of the bearing 3, so that the rotary guide sleeve 2 cannot be separated from the inner ring 42 of the bearing 3, the fixing device is connected to the outer ring of the bearing 3, such as a connecting fixing plate or a fixing arm, so that the outer ring of the bearing 3 is fixedly connected with the frame of the sewing machine, the frame supports the rotary guide sleeve 2 through the bearing 3, radial shaking generated when the rotary guide sleeve 2 is prevented from only rotating, and stability and accuracy when the rotary guide sleeve 2 drives the needle rod 1 to rotate are ensured.
More specifically, in the present embodiment, in order to ensure stability when the bearing 3 supports the rotary guide sleeve 2, two bearings 3 are used to engage with the outer wall of the rotary guide sleeve 2, so as to increase the contact area of the rotary guide sleeve 2.
Preferably, in the present embodiment, as shown in fig. 6, the rotary guide sleeve 2 includes a collar portion 21 and a sleeve portion 22 which are coaxially disposed, the collar portion 21 is disposed at one end of the sleeve portion 22, and the collar portion 21 has a diameter larger than that of the sleeve portion 22; the bearing 3 is provided on the outer wall of the sleeve portion 22.
Specifically, in the present embodiment, the through hole 24 penetrates the collar portion 21 and the sleeve portion 22, that is, the through hole 24 is a cylindrical inner cavity of the inner ring 42 of the collar portion 21 and the sleeve portion 22.
Specifically, in the present embodiment, the bearing 3 is provided on the outer wall of the sleeve portion 22, that is, the sleeve portion 22 is cylindrical.
In this embodiment, the ring stop portion 21 is disposed below the bearing 3, and can play a certain role in stopping the bearing 3, thereby preventing the relative vibration in the vertical direction between the rotary guide sleeve 2 and the bearing 3.
In this embodiment, the ring blocking portion 21 may be a circular ring structure, and may be another circular ring structure, such as a square ring structure, as long as it can block the bearing 3 and prevent the rotary guide sleeve 2 from vibrating in the up-and-down direction in the bearing 3.
Preferably, in the present embodiment, the other end of the sleeve portion 22 is provided with a retaining ring 4, and the retaining ring 4 is used for positioning the bearing 3.
The other end of the sleeve portion 22, i.e. the upper end of the sleeve portion 22, is provided with the retaining ring 4, i.e. the retaining ring 4 is arranged above the bearing 3, and the retaining ring portion 21 is arranged below the bearing 3, so that the axial positioning on the rotary guide sleeve 2 in the bearing 3 is realized, and when the bearing 3 is fixed by the fixing device, the rotary guide sleeve 2 can also be fixed by the fixing device, so that the rotary guide sleeve 2 can only rotate.
Preferably, as shown in fig. 7, the retainer ring 4 is provided with an adjustment gap 43, and the adjustment gap 43 is used for changing the inner diameter of the retainer ring 4.
In this embodiment, in order to facilitate the installation of the retainer ring 4, the adjustment gap 43 is provided on the retainer ring 4, so that the inner ring 42 and the outer ring of the retainer ring 4 are communicated, and the inner diameter of the retainer ring 4 can be changed by changing the size of the adjustment gap 43, thereby achieving the purpose of fixing the retainer ring 4 on the rotary guide sleeve 2.
Specifically, in this embodiment, the retainer ring 4 is provided with locking holes 44, the locking holes 44 are respectively disposed at two opposite sides of the adjustment gap 43, and the size of the adjustment gap 43 is changed and adjusted after the fixing bolt 8 sequentially passes through the two locking holes 44.
In this embodiment, one of the two locking holes 44 is a straight hole, and the other locking hole is a threaded hole, and the fixing bolt 8 is threaded with the threaded hole after passing through the straight hole, so as to adjust the adjustment gap 43.
Preferably, the retainer ring 4 is provided with a threaded hole 41, and the threaded hole 41 is arranged corresponding to the guide hole 23; the screw thread adjusting device further comprises a screw thread adjusting rod 5, wherein the screw thread adjusting rod 5 is matched with the screw thread hole 41 and can be inserted into the guide hole 23 to abut against the guide pin 7.
Specifically, in this embodiment, the axial direction of the threaded hole 41 is the radial direction of the retainer ring 4, and the gap between the guide pin 7 and the needle bar 1 can be adjusted by the way of abutting the thread adjusting rod 5 and the guide pin 7, so as to ensure that the needle bar 1 can be driven to rotate by rotating the guide sleeve 2.
More specifically, in the present embodiment, the threaded hole 41 is provided coaxially with the guide hole 23.
In this embodiment, the outer end of the threaded adjusting rod 5 is connected with a nut 6, and the threaded adjusting rod 5 is fixed by the nut 6.
Preferably, the threaded adjusting rod 5 is a screw or a bolt.
It should be noted that the threaded adjusting rod 5 may be a screw or a bolt, or may be another rod structure member having an external thread, as long as it can be in threaded engagement with the threaded hole 41, and thus can adjust the position of the guide pin 7.
Preferably, the rotary guide sleeve 2 is provided with a fixing connection hole 25.
In this embodiment, a fixing connection hole 25 is formed in the rotary guide sleeve 2, and the bolt passes through the fixing connection hole 25 and then is connected with the driving device, or is connected with a transmission mechanism on the driving device, so that the rotary guide sleeve 2 is driven to rotate by the driving device.
In the present embodiment, the fixing attachment holes 25 are straight holes, and the number of the fixing attachment holes 25 is plural.
Specifically, in the present embodiment, the plurality of fixing attachment holes 25 are arranged in a circular array with the axial direction of the rotary guide sleeve 2 as the central axis.
The utility model also provides a sewing machine, which comprises the needle bar 1 and any one of the needle bar guiding devices; the needle bar 1 is arranged in a sliding way in the rotary guide sleeve 2, and the needle bar 1 can rotate under the drive of the drive device.
In the present embodiment, as shown in fig. 1, the side wall of the needle bar 1 is provided with a rotation guide surface 11.
In this embodiment, the needle bar 1 is provided with the rotation guide surface 11, and the length of the rotation guide surface 11 is long, so that the guide pin 7 engaged with the rotation guide surface 11 can slide along the rotation guide surface 11 when the needle bar 1 moves linearly in the axial direction thereof.
When the needle bar 1 needs to rotate, the needle bar 1 is driven to rotate by the guide pin 7 matched with the rotating guide surface 11.
Specifically, because the rotation guide surface 11 is on the outer wall of the needle bar 1, the needle bar 1 is a cylinder, the minimum distance between the guide pin 7 matched with the rotation guide surface 11 and the needle bar 1 is smaller than the radius of the needle bar 1, and then when the guide pin 7 rotates around the needle bar 1, the guide pin abuts against the rotation guide surface 11, and finally the needle bar 1 is driven to rotate.
In this embodiment, the needle bar 1 of the sewing machine is slidably disposed in the rotary guide sleeve 2, and when the rotary guide sleeve 2 is rotated by the driving device, the needle bar 1 can be driven to rotate.
When the sewing machine operates, the direction of the needle bar 1 is consistent with the direction of the stitch all the time, so that the texture of the final sewing thread is more beautiful, namely the attractiveness of the finished product is improved.
In this embodiment, the rotation guide surface is a flat surface.
The planar rotation guide surface can be more conveniently matched with the guide pin 7, and then the needle bar 1 is more easily driven to rotate through the guide pin 7.
It should be noted that the rotation guide surface may be a plane, but is not limited to a plane, and may also be an arc-shaped surface or other structures, which only needs to be able to drive the needle bar 1 to rotate through the cooperation of the guide pin 7 and the rotation guide surface.
The utility model has the advantages that:
through the rotation spigot surface 11 counterbalance of uide pin 7 and needle bar 1, when drive arrangement drove rotatory uide bushing 2 and rotates, rotatory uide bushing 2 drove uide pin 7 and rotates, and then realizes droing needle bar 1 and rotate, and uide pin 7 and direction plane clearance fit, can enough realize that rotatory uide bushing 2 drove needle bar 1 and rotates, does not influence the axial displacement of needle bar 1 again. The driving device is matched with other parts of the sewing machine, the steering of the needle bar 1 is realized in the sewing process, only one stitch can be formed in the sewing process, and the attractiveness of finished products is improved.
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 (10)
1. A needle bar guiding device is characterized by comprising a driving device, a rotary guiding sleeve and a guiding pin;
the driving device is connected with the rotary guide sleeve and is used for driving the rotary guide sleeve to rotate;
the rotary guide sleeve is provided with a guide hole, the guide pin is arranged in the guide hole, and one end of the guide pin is arranged corresponding to the rotary guide surface of the needle rod and is used for driving the needle rod to rotate.
2. The needle bar guide device as defined in claim 1, wherein a bearing is provided on an outer wall of the rotary guide sleeve.
3. The needle bar guide device according to claim 2, wherein the rotary guide sleeve includes a collar portion and a sleeve portion coaxially disposed, the collar portion being disposed at one end of the sleeve portion, the collar portion having a diameter larger than a diameter of the sleeve portion;
the bearing is provided on an outer wall of the sleeve portion.
4. A needle bar guide as claimed in claim 3, wherein the other end of the sleeve portion is provided with a retaining ring for locating the bearing.
5. A needle bar guide as claimed in claim 4, wherein an adjustment clearance is provided on the collar for varying an inner diameter of the collar.
6. The needle bar guide device as defined in claim 4, wherein the retainer ring is provided with a threaded hole corresponding to the guide hole;
the thread adjusting rod is matched with the threaded hole and can be inserted into the guide hole to be abutted against the guide pin.
7. A needle bar guide as claimed in claim 6, wherein the threaded adjustment rod is a screw or bolt.
8. The needle bar guide as defined in claim 1, wherein the rotary guide sleeve is provided with a fixing attachment hole.
9. A sewing machine comprising a needle bar and the needle bar guide device of any one of claims 1 to 8;
the needle rod is provided with a rotary guide surface;
the needle bar is arranged in the rotary guide sleeve in a sliding mode and can be driven by the driving device to rotate.
10. The sewing machine of claim 9, wherein the rotating guide surface is planar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022615036.4U CN214115913U (en) | 2020-11-12 | 2020-11-12 | Needle bar guiding device and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022615036.4U CN214115913U (en) | 2020-11-12 | 2020-11-12 | Needle bar guiding device and sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214115913U true CN214115913U (en) | 2021-09-03 |
Family
ID=77503729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022615036.4U Active CN214115913U (en) | 2020-11-12 | 2020-11-12 | Needle bar guiding device and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214115913U (en) |
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2020
- 2020-11-12 CN CN202022615036.4U patent/CN214115913U/en active Active
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