CN110725076B - Needle bar height automatic regulating mechanism and sewing machine - Google Patents
Needle bar height automatic regulating mechanism and sewing machine Download PDFInfo
- Publication number
- CN110725076B CN110725076B CN201810786240.7A CN201810786240A CN110725076B CN 110725076 B CN110725076 B CN 110725076B CN 201810786240 A CN201810786240 A CN 201810786240A CN 110725076 B CN110725076 B CN 110725076B
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- China
- Prior art keywords
- needle bar
- sewing machine
- needle
- adjusting
- nut
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
Abstract
The invention provides a needle bar height automatic adjusting mechanism and a sewing machine. When the height of the needle bar needs to be adjusted, the adjusting driving source is enabled to act, the transmission shaft can be driven to move upwards or downwards, the transmission shaft drives the needle bar to move upwards or downwards together, and accordingly the height of the needle bar is increased or decreased, and therefore the height adjustment of the needle bar is achieved. Particularly, the adjustment of the height of the needle rod is driven by the adjusting driving source, is automatic, convenient and accurate, and provides effective guarantee for the production efficiency, order delivery and the like of a clothing factory.
Description
Technical Field
The invention relates to a needle rod height automatic regulating mechanism.
The invention also relates to a sewing machine comprising the automatic needle bar height adjusting mechanism.
Background
When a clothing factory, especially a large clothing factory, needs to switch a large amount of fabrics, sometimes in order to adapt to the characteristics of fabrics and sewing threads, the matching of a machine needle and a rotating shuttle needs to be changed, namely, the height of a needle rod is adjusted on one hand, and the matching position of the needle rod and the rotating shuttle is changed on the other hand; sometimes, the matching of the machine needle and the rotating shuttle is required to be adjusted when different fabrics are switched, such as the knitted fabric and the woven fabric. At this time, it is necessary to adjust the height of the needle bar in the sewing machine.
At present, the height of a needle bar on a sewing machine is adjusted by disassembling a panel of a machine head by a mechanic and unscrewing a locking screw of the needle bar. In particular, the accuracy of the needle bar height adjustment depends in large part on the experience of the mechanic. Thus, a mechanic is required to debug one machine by one machine, and each machine takes a lot of time, which results in a low debugging efficiency and affects the mass production plan of the clothing factory. Especially for the future personalized production mode, the change of the garment material is rapid, and the manual debugging can greatly influence the production efficiency and order delivery.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an automatic needle bar height adjusting mechanism capable of adjusting the height of a needle bar quickly and accurately.
In order to achieve the aim, the invention provides an automatic needle rod height adjusting mechanism which comprises a needle rod, an adjusting driving source and a transmission shaft, wherein the adjusting driving source is connected with one end of the transmission shaft and drives the transmission shaft to move up and down, and the other end of the transmission shaft is connected with the needle rod.
Further, the automatic needle bar height adjusting mechanism further comprises an electric control module and an operation panel of the sewing machine, and the operation panel and the adjusting driving source are connected with the electric control module.
Furthermore, the automatic needle rod height adjusting mechanism also comprises an upper shaft sleeve, a drive plate and an adjusting drive nut, wherein the drive plate is fixed on the lower end face of the upper shaft sleeve, the output end of the adjusting drive source is connected with the upper shaft sleeve and drives the upper shaft sleeve to rotate, a first transmission plane is arranged on the end face, facing the drive shaft, of the drive plate, a second transmission plane matched with the first transmission plane and a screw section in threaded connection with the adjusting drive nut are arranged on the drive shaft, and the upper end of the drive shaft can penetrate through the upper shaft sleeve in a vertically movable manner; when the output end of the adjusting driving source acts, the adjusting driving nut and the shell of the sewing machine are relatively static.
Furthermore, the automatic needle bar height adjusting mechanism further comprises a connecting block fixed at the lower end of the transmission shaft, a lower shaft sleeve fixed on the machine shell and a stop plate fixed on the end face of the lower shaft sleeve, the connecting block is rotatably installed at the periphery of the upper end of the needle bar through a bearing, the needle bar can penetrate through the lower shaft sleeve in a vertically movable mode, a first stop plane is arranged on the end face, facing the needle bar, of the stop plate, and a second stop plane matched with the first stop plane is arranged on the needle bar.
Furthermore, the adjusting driving nut is connected with a cloth-pricking and thread-taking-up component in the sewing machine; when the sewing machine sews, the cloth-pricking and thread-taking-up component drives the adjusting drive nut to move up and down.
Furthermore, the needle bar crank is fixed on a rotatable upper shaft of the sewing machine, one end of the thread picking crank is fixed on the needle bar crank, the fixed points of the thread picking crank and the needle bar crank are eccentric to the upper shaft, a nut shaft part parallel to the upper shaft extends on the adjusting drive nut, one end of the needle bar connecting rod is hinged to the needle bar crank, and the other end of the needle bar connecting rod is hinged to the nut shaft part.
Further, the automatic needle bar height adjusting mechanism further comprises a guide block fixed on the machine shell of the sewing machine, a guide sliding groove extending up and down is formed in the guide block, a sliding block is connected to the end portion of the nut shaft portion, and the sliding block is matched with the guide sliding groove and can slide up and down along the guide sliding groove.
The invention also provides a sewing machine, wherein the automatic needle bar height adjusting mechanism is arranged in the sewing machine.
As described above, the automatic needle bar height adjusting mechanism and the sewing machine according to the present invention have the following advantageous effects:
when the height of the needle bar needs to be adjusted, the adjusting driving source is enabled to act, the transmission shaft can be driven to move upwards or downwards, the transmission shaft drives the needle bar to move upwards or downwards together, and accordingly the height of the needle bar is increased or decreased, and therefore the height adjustment of the needle bar is achieved. Particularly, the adjustment of the height of the needle rod is driven by the adjusting driving source, is automatic, convenient and accurate, and provides effective guarantee for the production efficiency, order delivery and the like of a clothing factory.
Drawings
Fig. 1 is a schematic structural view of an automatic needle bar height adjusting mechanism in the present application.
Fig. 2 is an enlarged view of circle a of fig. 1.
Fig. 3 is a partial cross-sectional view of fig. 1.
Fig. 4 is a schematic view of the connection between the upper sleeve, drive plate and drive shaft in the present application.
Fig. 5 is a schematic view of the connection between the lower hub, the stopper plate and the needle bar in the present application.
Description of the element reference numerals
1 needle bar
101 second stop plane
2 adjusting the driving source
3 drive shaft
301 second driving plane
4 Upper shaft sleeve
5 drive plate
501 first plane of motion
6 adjusting drive nut
601 nut shaft portion
7 connecting block
701 first connection part
702 second connection part
703 groove
8 lower shaft sleeve
9 stop plate
901 first stop plane
10 bearing
11 needle bar crank
12 thread take-up crank
13 needle bar connecting rod
14 Upper shaft
15 guide block
151 guide chute
16 sliding block
17 upper shaft motor
18 hand wheel
19 machine needle
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The application provides a high automatic regulating mechanism of needle bar for various types of sewing machines, for example: flat bed sewing machines, cup seaming machines, etc. As shown in fig. 1, the automatic needle rod height adjusting mechanism comprises a needle rod 1 extending up and down, an adjusting drive source 2 and a transmission shaft 3 extending up and down, wherein the needle rod 1 and the transmission shaft 3 are coaxially arranged, the adjusting drive source 2 is fixed on a machine shell of the sewing machine and is connected with the upper end of the transmission shaft 3, the driving transmission shaft 3 moves up and down, the lower end of the transmission shaft 3 is connected with the upper end of the needle rod 1, and a needle 19 is installed at the lower end of the needle rod 1. When the height of the needle bar needs to be adjusted, the adjusting driving source 2 is enabled to act, the driving shaft 3 can be driven to move upwards or downwards, the driving shaft 3 drives the needle bar 1 to move upwards or downwards together, and accordingly the height of the needle bar is increased or decreased, so that the height of the needle bar is adjusted, the matching position of the needle 19 and the rotating shuttle is changed, and the sewing requirements of different fabrics are met. Particularly, the adjustment of the height of the needle rod is driven by the adjusting driving source 2, is automatic, convenient, accurate and efficient, and provides effective guarantee for the production efficiency, order delivery and the like of a clothing factory.
The adjusting driving source 2 is an adjusting motor, and the preferable connection structure between the adjusting driving source 2 and the transmission shaft 3 is as follows: as shown in fig. 1 to 4, the automatic needle rod height adjusting mechanism further includes an upper shaft sleeve 4, a driving plate 5 fixed on the lower end surface of the upper shaft sleeve 4, and an adjusting driving nut 6, the output end of the adjusting driving source 2 is connected with the upper shaft sleeve 4 to drive the upper shaft sleeve 4 to rotate, the end surface of the driving plate 5 facing the transmission shaft 3 is provided with a first transmission plane 501, the transmission shaft 3 is provided with a second transmission plane 301 matched with the first transmission plane 501, and a screw section in threaded connection with the adjusting driving nut 6, and the upper end of the transmission shaft 3 is vertically movably inserted into the upper shaft sleeve 4. Preferably, the upper shaft sleeve 4 is provided with a first hole portion which is matched with the transmission shaft 3, and the hole wall of the first hole portion is provided with a third transmission plane which is matched with the second transmission plane 301 on the transmission shaft 3. When the output end of the adjusting driving source 2 acts, the adjusting driving nut 6 and the shell of the sewing machine are relatively static, so that the adjusting driving nut 6 is in a static state; the adjusting driving source 2 drives the upper shaft sleeve 4 to rotate, the upper shaft sleeve 4 drives the driving plate 5 to rotate together, the driving shaft 3 is driven to rotate together through the matching of the first transmission plane 501 on the driving plate 5 and the second transmission plane 301 on the driving shaft 3 and the matching of the third transmission plane in the upper shaft sleeve 4 and the second transmission plane 301 on the driving shaft 3, and the screw section on the driving shaft 3 is in threaded fit with the adjusting driving nut 6, so that the driving shaft 3 can move up or down while rotating, and further the needle rod 1 and the needle 19 are driven to move up or down together, and the automatic adjustment of the height of the needle rod is realized.
As shown in fig. 1 and 5, the automatic needle bar height adjusting mechanism further includes a connecting block 7 fixed at the lower end of the transmission shaft 3, a lower shaft sleeve 8 fixed to the housing, and a stop plate 9 fixed on the lower end surface of the lower shaft sleeve 8, the connecting block 7 is located at the lower side of the adjusting drive nut 6, the connecting block 7 is rotatably mounted on the periphery of the upper end of the needle bar 1 through a bearing 10, the needle bar 1 is vertically movably inserted into the lower shaft sleeve 8, the end surface of the stop plate 9 facing the needle bar 1 has a first stop plane 901, and the needle bar 1 is provided with a second stop plane 101 matched with the first stop plane 901 for limiting the rotation of the needle bar 1. Preferably, the lower sleeve 8 has a second hole portion therein, which is adapted to cooperate with the shank 1, the hole wall of the second hole portion having a third stop plane adapted to cooperate with the second stop plane 101 of the shank 1. When adjusting the needle bar height, transmission shaft 3 drives connecting block 7 and rotates and reciprocates together, and the effect through bearing 10, second locking plane 101 on the jam plate 9 and the cooperation of second locking plane 101 on the needle bar 1 and the cooperation of third locking plane and second locking plane 101 on the needle bar 1 can be realized in lower axle sleeve 8: the needle bar 1 is not rotated while the connecting block 7 is rotated, and the connecting block 7 drives the needle bar 1 to move up and down together while moving up and down. In addition, as shown in fig. 2 and 3, the connecting block 7 has a "concave" structure having a first connecting portion 701 fixed to the lower end of the drive shaft 3, a second connecting portion 702 through which the upper end of the needle bar 1 is inserted, and a groove 703 formed between the first connecting portion 701 and the second connecting portion 702, and the bearings 10 are two in number, one of them being located in the groove 703 and the other being located below the second connecting portion 702.
Further, in the operation process of the sewing machine, the needle bar 1 needs to reciprocate up and down, and in the application, the up and down reciprocating motion of the needle bar 1 is driven by a cloth-pricking and thread-taking-up component in the sewing machine; preferably, as shown in fig. 1 and 2, the adjusting driving nut 6 is connected with a cloth-pricking thread-taking-up assembly in the sewing machine; when the sewing machine sews, the cloth-pricking and thread-taking-up component drives the adjusting drive nut 6 to reciprocate up and down, and the adjusting drive nut 6 drives the transmission shaft 3, the connecting block 7, the needle bar 1 and the machine needle 19 to reciprocate up and down together. In addition, the needle cloth picking and threading assembly comprises a needle bar crank 11, a picking crank 12, a needle bar connecting rod 13, a rotatable upper shaft 14 and an upper shaft motor 17 for driving the upper shaft 14 to rotate, wherein the needle bar crank 11 is fixed at one end of the upper shaft 14, one end of the picking crank 12 is fixed on the needle bar crank 11, the fixing points of the picking crank 12 and the needle bar crank 11 are eccentric to the upper shaft 14, a nut shaft part 601 parallel to the upper shaft 14 extends on the adjusting driving nut 6, one end of the needle bar connecting rod 13 is hinged to the needle bar crank 11, and the other end of the needle bar connecting rod 13 is hinged to the nut shaft part 601. The needle bar height automatic regulating mechanism further comprises a guide block 15 fixed on a machine shell of the sewing machine, a guide sliding groove 151 extending up and down is formed in the guide block 15, a sliding block 16 is connected to the end portion of the nut shaft portion 601, and the sliding block 16 is matched with the guide sliding groove 151 and can slide up and down along the guide sliding groove 151. The upper shaft motor 17 drives the upper shaft 14 to swing, thereby driving the adjusting drive nut 6 to reciprocate up and down through the needle bar crank 11, the thread take-up crank 12 and the needle bar connecting rod 13.
Further, the automatic needle bar height adjusting mechanism further comprises an electric control module and an operation panel of the sewing machine, and the operation panel and the adjusting drive source 2 are connected with the electric control module. Can set up the parameter of needle bar altitude mixture control through operating panel, the automatically controlled module is according to the output rotational speed of parameter control accommodate motor that sets for, can realize the change that the needle bar height corresponds, and the operation is very swift, convenient, humanized. In actual operation, a worker can set a specific needle bar height adjusting value in the electric control module through the operation panel in advance according to the needle bar heights corresponding to different fabrics, can be in position by one key in subsequent sewing, is convenient and accurate, and particularly can realize the combination of automatic needle bar height adjustment and automatic rotating shuttle position adjustment for a sewing machine with an automatic rotating shuttle adjusting function, so that the automatic needle shuttle matching adjustment is realized. In addition, a hand wheel 18 can be connected to one end of the output shaft of the upper shaft motor 17 far away from the upper shaft 14.
In summary, the working principle of the automatic needle bar height adjusting mechanism is as follows: when the sewing machine sews normally, the upper shaft motor 17 works, but the adjusting drive source 2 does not work, at this time, the upper shaft motor 17 drives the upper shaft 14 to rotate, the adjusting drive nut 6 is driven to reciprocate up and down through the cloth pricking and thread picking assembly, the transmission shaft 3, the connecting block 7, the needle rod 1 and the needle 19 are further driven to reciprocate up and down together, the upper end of the transmission shaft 3 reciprocates up and down in the first hole part of the upper shaft sleeve 4, and the upper shaft sleeve 4 is in a static state. When the height of the needle rod is adjusted, the adjusting driving source 2 works but the upper shaft motor 17 does not work, at the moment, the cloth pricking and thread picking assembly does not work, so that the adjusting driving nut 6 does not work and is in a static state, the adjusting driving source 2 drives the transmission shaft 3 to rotate through the upper shaft sleeve 4 and the driving plate 5, the transmission shaft 3 also moves up and down while rotating, the transmission shaft 3 drives the connecting block 7 to rotate and move up and down together, and only the needle rod 1 is driven to move up or down through the effects of the bearing 10, the lower shaft sleeve 8 and the stop plate 9.
The invention also provides a sewing machine, wherein the automatic needle bar height adjusting mechanism is arranged in the sewing machine.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a needle bar height automatic regulating mechanism, includes needle bar (1), its characterized in that: the adjustable needle bar mechanism is characterized by further comprising an adjusting driving source (2), a transmission shaft (3), an upper shaft sleeve (4), a driving plate (5) fixed on the lower end face of the upper shaft sleeve (4), an adjusting driving nut (6), a connecting block (7) fixed at the lower end of the transmission shaft (3), a lower shaft sleeve (8) fixed on the machine shell and a stop plate (9) fixed on the end face of the lower shaft sleeve (8), wherein the adjusting driving source (2) is connected with one end of the transmission shaft (3) to drive the transmission shaft (3) to move up and down, and the other end of the transmission shaft (3) is connected with; the output end of the adjusting driving source (2) is connected with the upper shaft sleeve (4) to drive the upper shaft sleeve (4) to rotate, a first transmission plane (501) is arranged on the end face, facing the transmission shaft (3), of the driving plate (5), a second transmission plane (301) matched with the first transmission plane (501) and a screw section in threaded connection with the adjusting driving nut (6) are arranged on the transmission shaft (3), and the upper end of the transmission shaft (3) can penetrate through the upper shaft sleeve (4) in a vertically movable mode; when the output end of the adjusting driving source (2) acts, the adjusting driving nut (6) is relatively static with the shell of the sewing machine; the connecting block (7) is rotatably arranged on the periphery of the upper end of the needle rod (1) through a bearing (10), the needle rod (1) can be vertically and movably arranged in the lower shaft sleeve (8) in a penetrating mode, a first stop plane (901) is arranged on the end face, facing the needle rod (1), of the stop plate (9), and a second stop plane (101) matched with the first stop plane (901) is arranged on the needle rod (1).
2. The needle bar height automatic adjustment mechanism according to claim 1, characterized in that: the sewing machine further comprises an electric control module and an operation panel of the sewing machine, wherein the operation panel and the adjusting driving source (2) are connected with the electric control module.
3. The needle bar height automatic adjustment mechanism according to claim 1, characterized in that: the adjusting driving nut (6) is connected with a cloth-pricking and thread-taking-up component in the sewing machine; when the sewing machine sews, the cloth-pricking and thread-taking-up component drives the adjusting drive nut (6) to move up and down.
4. The needle bar height automatic adjustment mechanism according to claim 3, characterized in that: the needle bar crank (11) is fixed on a rotatable upper shaft (14) in the sewing machine, one end of the thread picking crank (12) is fixed on the needle bar crank (11), the fixing points of the thread picking crank (12) and the needle bar crank (11) are eccentric to the upper shaft (14), a nut shaft part (601) parallel to the upper shaft (14) extends on the adjusting drive nut (6), one end of the needle bar connecting rod (13) is hinged to the needle bar crank (11), and the other end of the needle bar connecting rod is hinged to the nut shaft part (601).
5. The needle bar height automatic adjustment mechanism according to claim 4, characterized in that: the sewing machine is characterized by further comprising a guide block (15) fixed on the middle machine shell of the sewing machine, a guide sliding groove (151) extending up and down is formed in the guide block (15), a sliding block (16) is connected to the end portion of the nut shaft portion (601), and the sliding block (16) is matched with the guide sliding groove (151) and can slide up and down along the guide sliding groove (151).
6. A sewing machine characterized by: the sewing machine is provided with the automatic needle bar height adjusting mechanism of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786240.7A CN110725076B (en) | 2018-07-17 | 2018-07-17 | Needle bar height automatic regulating mechanism and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810786240.7A CN110725076B (en) | 2018-07-17 | 2018-07-17 | Needle bar height automatic regulating mechanism and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110725076A CN110725076A (en) | 2020-01-24 |
| CN110725076B true CN110725076B (en) | 2021-07-09 |
Family
ID=69217569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810786240.7A Active CN110725076B (en) | 2018-07-17 | 2018-07-17 | Needle bar height automatic regulating mechanism and sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN110725076B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5056444A (en) * | 1990-08-29 | 1991-10-15 | Melco Industries, Inc. | Method and apparatus for automatically steering and adjusting the height of a needle in a chenille type embroidery machine |
| EP1837430A1 (en) * | 2006-03-22 | 2007-09-26 | Groz-Beckert KG | Needle bar holder for a sewing machine |
| CN201124339Y (en) * | 2007-12-18 | 2008-10-01 | 广东科达机电股份有限公司 | Roughing head of ceramic sheet |
| CN102383270B (en) * | 2010-09-03 | 2012-12-12 | 贺欣机械厂股份有限公司 | Electromechanical device control system capable of selecting control interfaces adaptively |
| CN203174324U (en) * | 2013-04-08 | 2013-09-04 | 东莞市名菱工业自动化科技有限公司 | Needle bar synchronous rotating mechanism |
| CN107247004B (en) * | 2017-06-12 | 2019-06-28 | 浙江农林大学 | Hardness of wood measuring instrument |
| CN107904788A (en) * | 2017-11-24 | 2018-04-13 | 刘丽影 | A kind of portable sewing machine being applied in textile mills |
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2018
- 2018-07-17 CN CN201810786240.7A patent/CN110725076B/en active Active
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