CN111501233B - Needle bar driving structure capable of reducing needle bar height during needle lifting, machine head and embroidery machine - Google Patents
Needle bar driving structure capable of reducing needle bar height during needle lifting, machine head and embroidery machine Download PDFInfo
- Publication number
- CN111501233B CN111501233B CN202010344996.3A CN202010344996A CN111501233B CN 111501233 B CN111501233 B CN 111501233B CN 202010344996 A CN202010344996 A CN 202010344996A CN 111501233 B CN111501233 B CN 111501233B
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- needle
- needle bar
- rod
- bar
- height
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/02—Machine needles
- D05C11/06—Needle-driving or control mechanisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a needle bar driving structure capable of reducing the height of a needle bar when in needle lifting, a machine head and an embroidery machine, wherein the needle bar driving structure capable of reducing the height of the needle bar when in needle lifting comprises a needle bar with a top dead center and a bottom dead center, and a needle bar driver for driving the needle bar to move, the needle bar driver comprises a needle bar driving block, the needle bar driving block is provided with a clamping groove matched with the bottom dead center, and the needle bar driving structure also comprises a needle bar pressing component for pressing the needle bar when in needle lifting. According to the technical scheme, when the needle is started, the needle pressing rod assembly presses the needle rod downwards so that the lower dead point corresponds to the height of the clamping groove, the needle rod driving block can rotate to enable the lower dead point to be embedded into the clamping groove of the driving block, and therefore the needle rod can move up and down along with the needle rod driver.
Description
Technical Field
The invention belongs to the technical field of embroidery machines.
Background
In the stopped state of the conventional embroidery machine, the height of the bottom of the presser foot from the needle plate is shown in fig. 1, and is usually 27mm. The automobile seat cushion machine uses leather and other thick materials, so that the distance from the bottom end of the presser foot to the needle plate surface in the stop state needs to be increased, and the leather is convenient to replace. So that the shuttle box body is lowered in the height direction. However, under the condition that the machine head is not changed, the up-and-down stroke of the driver is unchanged, so that the smooth embroidery can be ensured by lengthening the needle bar in order to compensate the reduction of the height position of the shuttle box body.
However, after the needle bar is lengthened, the height position of the bottom dead center in the parking state can be lifted, so that even if the driver moves to the highest position during needle lifting, the clamping groove still cannot touch the bottom dead center, and the needle bar cannot move up and down along with the driver. Therefore, a device is required to push down the needle bar during needle lifting so that the bottom dead center on the needle bar is embedded in the driver clamping groove.
The thread hooking device of the conventional embroidery machine is fastened at the bottom of the machine shell and is parallel to the bottom of the machine shell, and the automobile seat cushion machine can reduce the position of the shuttle box body in the height direction because leather is thicker and the height requirement from the lower end of the machine shell to the needle board surface is higher than that of the conventional embroidery machine in order to facilitate the replacement of leather. However, when the shuttle box is lowered, the conventional thread catcher cannot complete the thread hooking, so that the height position of the thread catcher needs to be lowered.
Disclosure of Invention
The invention aims to solve the technical problem of providing a needle bar driving structure capable of reducing the height of a needle bar when in needle lifting, and the needle bar can be downwards pressed when in needle lifting, so that a bottom dead center on the needle bar is embedded into a driving block clamping groove.
In order to solve the technical problems, the invention adopts the following technical scheme: can reduce needle bar drive structure of needle bar height when playing the needle, including needle bar, the needle bar driver of drive needle bar motion that has top dead center and bottom dead center, the needle bar driver includes needle bar drive piece, the needle bar drive piece is equipped with bottom dead center complex draw-in groove, still includes to push down the needle bar when playing the needle to make the bottom dead center and draw-in groove highly correspond the needle bar subassembly of pressing.
Preferably, the needle pressing rod assembly comprises a needle pressing rod for pressing the upper dead point and a driving piece for driving the needle pressing rod to act.
Preferably, the bottom of the needle bar compression bar is provided with a compression plate which is pressed with the upper dead point, and the compression plate is provided with two limiting holes which are respectively matched with the needle bar and the guide bar.
Preferably, the needle bar compression bar is connected with a reset spring which realizes upward reset after the compression plate is released from the upper dead point.
Preferably, the needle pressing rod assembly further comprises a swinging shaft and a swinging rod rotatably connected to the swinging shaft, and the needle pressing rod is driven by the swinging rod.
Preferably, the needle pressing rod assembly further comprises an air cylinder, and the swing rod is driven to rotate through the extension and retraction of a piston rod of the air cylinder.
Preferably, the swing rod is provided with a rear protruding part protruding backwards, the piston rod is connected with a top plate, and the rear protruding part is connected with a rolling bearing in rolling fit with the top plate.
Preferably, the swing rod is provided with a swing head protruding forwards, and the upper end of the needle rod pressing rod is connected with a rolling bearing in rolling fit with the swing head.
The invention also provides an embroidery machine head, which comprises a needle bar driving structure capable of reducing the height of the needle bar when the embroidery machine is started.
The invention also provides an embroidery machine, which comprises the embroidery machine head.
The technical scheme adopted by the invention has the following beneficial effects:
1. when the needle is started, the needle pressing rod assembly presses the needle rod downwards so that the bottom dead center corresponds to the clamping groove in height, the needle rod driving block can rotate to enable the bottom dead center to be embedded into the clamping groove of the driving block, and therefore the needle rod can move up and down along with the needle rod driver.
2. As the upper dead point and the lower dead point are the same and are fastened and connected with the needle bar by the screw lock, the needle bar can be pressed down by pressing the upper dead point, so that the needle bar is pressed down by adopting a mode that the pressing plate presses the upper dead point by means of the inherent upper dead point on the existing needle bar, and a pressing supporting point is not required to be additionally arranged on the needle bar.
3. Two limiting holes on the pressing plate are respectively matched with the needle bar and the guide bar, so that the needle bar pressing bar is prevented from rotating.
4. The swing rod is forced to rotate around the swing shaft, so that the needle rod pressing rod is pressed downwards, and the needle rod pressing rod is pushed to push the upper dead point downwards after being lowered until the lower dead point on the needle rod is embedded into the clamping groove of the driving block. After the pressing action is completed, the needle bar pressing rod is released from the pressing plate and the upper dead point and then is reset upwards through the reset spring, and then the needle bar can work normally. The needle bar pressing rod can further lift the swinging rod to rotate and reset, so that the swinging rod can be driven to rotate around the swinging shaft through simple horizontal linear expansion.
5. The piston rod of the air cylinder stretches and contracts to drive the swinging rod to rotate, and a complex transmission structure is not needed.
6. The swinging rod is convenient to act on the cylinder and the needle bar pressing rod through the rear protruding part and the swinging head, rolling contact is realized between the swinging rod and the top plate and between the swinging rod and the needle bar pressing rod through the rolling bearing, the friction force is small, the transmission is smoother, and the noise is small.
The specific technical scheme and the beneficial effects of the invention are described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
fig. 1 is a schematic view of a conventional embroidery machine in a stopped state;
FIG. 2 is a schematic view showing a partial structure of an embroidery machine according to the present invention;
FIG. 3 is a schematic view showing the installation structure of the needle bar driving device of the embroidery machine on the needle bar frame;
FIG. 4 is a schematic view of the structure of the present invention in which the needle bar assembly is pressed;
FIG. 5 is a schematic diagram showing the cooperation structure of the needle bar driver and the needle bar in the present invention;
FIG. 6 is a schematic diagram of a thread hooking device of an embroidery machine according to the present invention;
FIG. 7 is a schematic diagram of a thread hooking device of an embroidery machine according to the second embodiment of the present invention;
in the figure: 100-needle bar frame assembly; 101-a needle bar frame upper cross beam; 1-a needle bar driving device; 11-a needle bar compression bar; 111-a platen; 1111-limiting holes; 112-upper rolling bearing; 12-swinging rod; 121-a swinging head; 122-rear rolling bearing; 13-cylinder; 131-top plate; 14-a needle bar; 141-bottom dead center; 142-top dead center; 15-a needle bar driver; 151-needle bar drive block; 1511-a clamping groove; 16-a swing shaft; 200-a handpiece housing assembly; 2-hooking means; 21-a thread hooking device; 211-bending plates; 22-lifters; 23-connecting plates.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "front", "rear", "upper", "lower", etc., indicating an azimuth or a positional relationship are based on only the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus/elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, fixedly attached, detachably attached, or integrally attached; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Those skilled in the art will appreciate that the features of the examples and embodiments described below can be combined with one another without conflict.
Referring to fig. 1 to 7, the embroidery machine includes an embroidery machine head, wherein the embroidery machine head includes a head housing assembly 200 and a needle bar frame assembly 100, the head housing assembly 200 includes a head housing, a cam link mechanism, and the like, a thread hooking device 2 is installed on the head housing, the thread hooking device 2 includes a thread hooking device 21, the needle bar frame assembly 100 includes a needle bar frame on which a needle bar driving device 1 is installed. Reference is made in particular to the prior art.
For leather and other thicker cloth (leather), the height requirement from the lower end of the shell to the needle board surface is higher than that of a common embroidery machine in order to facilitate the replacement of the leather, so that the position of the shuttle box body in the height direction can be reduced. Meanwhile, in order to compensate for the reduction of the height position of the shuttle box body, the smooth embroidery is ensured by a mode of lengthening the needle rod. After the needle bar is lengthened, the height position of the bottom dead center in the parking state can be lifted, so that the clamping groove of the needle bar driver can not touch the bottom dead center even if the needle bar driver moves to the highest position. Therefore, the needle bar driving device of the embroidery machine can downwards press the needle bar when the embroidery machine starts to perform needle, so that the lower dead point on the needle bar is embedded into the driving block clamping groove.
Referring to fig. 2 to 5, the needle bar driving device 1 of the embroidery machine includes a needle bar 14 having a top dead center 142 and a bottom dead center 141, and a needle bar driver 15 driving the needle bar 14 to move, the needle bar driver 15 includes a needle bar driving block 151, and the needle bar driving block 151 is provided with a card slot 1511 cooperating with the bottom dead center 141.
In order to realize the downward pressing of the needle bar 14 during the needle lifting, the needle bar driving device 1 of the embroidery machine further comprises a needle bar pressing assembly for pressing the needle bar 14 downward during the needle lifting so that the bottom dead center 141 corresponds to the clamping groove 1511 in height. When the needle is started, the needle bar 14 is pressed downwards by the needle bar pressing component, so that the bottom dead center 141 corresponds to the clamping groove 1511 in height, the needle bar driving block 151 can rotate to enable the bottom dead center 141 to be embedded into the driving block clamping groove 1511, and accordingly the needle bar 14 can move up and down along with the needle bar driver 15.
In this embodiment, the needle pressing rod assembly includes a needle pressing rod 11 that presses the top dead center 142 and a driving member that drives the needle pressing rod 11 to move, and a guide hole that is matched with the needle pressing rod 11 is provided on the needle pressing rod upper beam 101 to guide the needle pressing rod 11 to move linearly up and down.
For pressing with the top dead center 142, a pressing plate 111 pressing with the top dead center 142 is disposed at the bottom of the needle bar pressing rod 11, and two limiting holes 1111 are disposed on the pressing plate 111 and respectively match with the needle bar 14 and the guide bar (the guide bar is parallel to the needle bar), so that the needle bar pressing rod 11 is prevented from rotating. With the aid of the top dead center 142 inherent to the existing needle bar, the needle bar 14 is pressed downwards by adopting the mode of the top dead center 142 of the pressing plate 111, and no pressing fulcrum is needed to be additionally arranged on the needle bar.
In addition, the needle bar compression bar 11 is connected with a return spring for realizing upward return after the compression plate is disengaged from the top dead center 142. The needle pressing rod assembly further comprises a swinging shaft 16 and a swinging rod 12 rotatably connected with the swinging shaft 16, and the needle pressing rod 11 is driven by the swinging rod 12. The swing rod 12 is forced to rotate around the swing shaft 16, so that the needle rod pressing rod 11 is pressed downwards, and the needle rod pressing rod 11 descends to push the upper dead point 142 downwards until the lower dead point 141 on the needle rod is embedded into the clamping groove 1511 of the driving block. After the pressing action is completed, the needle bar pressing rod 11 is released from the pressing plate 111 and the top dead center 142 and then is reset upwards by the reset spring, and then the needle bar 14 can work normally. The needle bar compression bar 11 can further lift the swing bar 12 to rotate and reset, so that the swing bar can be driven to rotate around the swing shaft through simple horizontal linear expansion and contraction.
The needle pressing rod assembly further comprises an air cylinder 13, and the swing rod 12 is driven to rotate through the extension and retraction of a piston rod of the air cylinder 13. No complex transmission structure is required.
The swing lever 12 is provided with a rear projection projecting rearward, to which a rear rolling bearing 122 is connected. The swing lever 12 is provided with a swing head 121 protruding forward. The upper end of the needle bar compression bar 11 is connected with an upper rolling bearing 112, and the swinging head 121 is provided with an arc surface matched with the rolling bearing. Rolling contact is realized by adopting the rolling bearing, the friction force is smaller, the transmission is smoother, and the noise is smaller.
In addition, when the bobbin case is lowered, the conventional thread hooking device cannot complete the hooking of the thread, so that the height position of the thread hooking device needs to be lowered. Referring to fig. 6 and 7, the thread hooking device 2 of the embroidery machine adopted in the invention comprises a thread hooking device 21 installed on a machine head shell, wherein a lifter 22 is also installed on the machine head shell, when thread hooking is required, the lifter 22 drives the thread hooking device 21 to descend from an initial height to a thread hooking position, and after thread hooking is completed, the lifter 22 drives the thread hooking device 21 to ascend to the initial height. Therefore, the problem that the conventional thread hooking device cannot hook threads after the height of the shuttle box body is reduced is solved.
In this embodiment, the lifter 22 is a cylinder that is vertically installed and has a piston rod facing downward. Moreover, for convenient installation, the cylinder is arranged on the side surface of the machine head shell. The piston ejector rod is connected with a connecting plate 23 through a top plate at the end part, the thread hooking device 21 comprises a thread hooking bottom plate, the thread hooking bottom plate is provided with a side bending plate 211, and the side bending plate is connected with the connecting plate through a screw.
Of course, those skilled in the art will appreciate that a linear motor or similar linear drive may be used in place of the cylinder.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (9)
1. Can reduce needle bar drive structure of needle bar height, including needle bar, the needle bar driver of drive needle bar motion that has top dead center and bottom dead center, the needle bar driver includes needle bar drive piece, needle bar drive piece be equipped with bottom dead center complex draw-in groove, its characterized in that: the needle pressing device is characterized by further comprising a needle pressing rod assembly which is used for pressing the needle rod downwards when the needle is lifted, so that the lower dead point corresponds to the clamping groove in height, and the needle pressing rod assembly comprises a needle pressing rod which is used for pressing the upper dead point and a driving piece which is used for driving the needle pressing rod to act.
2. The needle bar driving structure capable of lowering the height of a needle bar in a needle raising process according to claim 1, wherein: the bottom of the needle bar compression bar is provided with a compression plate which is pressed with the upper dead point, and the compression plate is provided with a limit hole which is matched with the needle bar and the guide bar.
3. The needle bar driving structure capable of lowering the height of a needle bar in a needle raising as set forth in claim 2, wherein: the needle bar compression bar is connected with a reset spring which can reset upwards after the compression plate is released from the upper dead point.
4. A needle bar driving structure capable of lowering the height of a needle bar in a needle raising operation according to any one of claims 1 to 3, wherein: the needle pressing rod assembly further comprises a swinging shaft and a swinging rod rotatably connected to the swinging shaft, and the needle pressing rod is driven by the swinging rod.
5. The needle bar driving structure capable of lowering the height of a needle bar in a needle raising as set forth in claim 4, wherein: the needle pressing rod assembly further comprises an air cylinder, and the swing rod is driven to rotate through the extension and retraction of a piston rod of the air cylinder.
6. The needle bar driving structure capable of lowering the height of a needle bar in a needle raising as set forth in claim 5, wherein: the swing rod is provided with a rear protruding portion protruding backwards, the piston rod is connected with a top plate, and the rear protruding portion is connected with a rolling bearing in rolling fit with the top plate.
7. The needle bar driving structure capable of lowering the height of a needle bar in a needle raising as set forth in claim 5, wherein: the swing rod is provided with a swing head protruding forwards, and the upper end of the needle rod pressing rod is connected with a rolling bearing in rolling fit with the swing head.
8. Embroidery machine aircraft nose, its characterized in that: a needle bar drive structure comprising the needle bar height-reducible needle bar recited in any one of claims 1 to 7.
9. Embroidery machine, its characterized in that: comprising the embroidery machine head of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010344996.3A CN111501233B (en) | 2020-04-27 | 2020-04-27 | Needle bar driving structure capable of reducing needle bar height during needle lifting, machine head and embroidery machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010344996.3A CN111501233B (en) | 2020-04-27 | 2020-04-27 | Needle bar driving structure capable of reducing needle bar height during needle lifting, machine head and embroidery machine |
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| Publication Number | Publication Date |
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| CN111501233A CN111501233A (en) | 2020-08-07 |
| CN111501233B true CN111501233B (en) | 2023-09-05 |
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| CN202010344996.3A Active CN111501233B (en) | 2020-04-27 | 2020-04-27 | Needle bar driving structure capable of reducing needle bar height during needle lifting, machine head and embroidery machine |
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| JPH0557081A (en) * | 1991-08-30 | 1993-03-09 | Brother Ind Ltd | Needlebar driving gear of sewing machine |
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| CN108193398A (en) * | 2018-02-06 | 2018-06-22 | 浙江信胜缝制设备有限公司 | A kind of machine head of embroidery machine and there is the embroidery machine embroidered every head |
| CN209323141U (en) * | 2018-07-23 | 2019-08-30 | 长兴玛雅软件开发有限公司 | Computerized emboridering machine head needle bar drive device and its computerized emboridering machine head |
| CN110424110A (en) * | 2019-07-11 | 2019-11-08 | 浙江信胜科技股份有限公司 | It is a kind of to drive stable presser feet driving assembly and embroidery machine |
| CN212404469U (en) * | 2020-04-27 | 2021-01-26 | 浙江信胜科技股份有限公司 | Embroidery machine needle bar driving device, embroidery machine head and embroidery machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080082361A (en) * | 2007-03-08 | 2008-09-11 | 썬스타 특수정밀 주식회사 | Embroidery |
| JP2015149991A (en) * | 2014-02-10 | 2015-08-24 | ブラザー工業株式会社 | sewing machine |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0557081A (en) * | 1991-08-30 | 1993-03-09 | Brother Ind Ltd | Needlebar driving gear of sewing machine |
| JPH11222762A (en) * | 1998-02-03 | 1999-08-17 | Brother Ind Ltd | Embroidering machine |
| CN201400786Y (en) * | 2009-04-20 | 2010-02-10 | 浙江越隆缝制设备有限公司 | Needle rod driver for embroidery machine |
| CN202323377U (en) * | 2011-11-16 | 2012-07-11 | 钱谷兰 | Pressure foot lifting mechanism of embroidery machine |
| CN106894177A (en) * | 2017-02-24 | 2017-06-27 | 诸暨市英帕斯机械有限公司 | The shank component and machine head of embroidery machine of a kind of embroidery machine |
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| CN111501233A (en) | 2020-08-07 |
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