CN202430454U - Needle bar of double needle sewing machine and switching mechanism thereof - Google Patents
Needle bar of double needle sewing machine and switching mechanism thereof Download PDFInfo
- Publication number
- CN202430454U CN202430454U CN2011203429487U CN201120342948U CN202430454U CN 202430454 U CN202430454 U CN 202430454U CN 2011203429487 U CN2011203429487 U CN 2011203429487U CN 201120342948 U CN201120342948 U CN 201120342948U CN 202430454 U CN202430454 U CN 202430454U
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- China
- Prior art keywords
- shank
- slide block
- needle bar
- voussoir
- needle
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Abstract
The utility model discloses a needle bar of a double needle sewing machine and a switching mechanism thereof. The needle bar comprises a hollow needle bar body, the lower end of which is fixedly connected to a needle bar head used for installing a machine needle; a return spring, a first wedge, a second wedge and a switching pressure bar are successively installed in the needle bar body; an upper end of the switching pressure bar is exposed from the inner of the needle bar body; a tip of the first wedge is downward and a tip of the second wedge is upward. The side wall of the needle bar body corresponding with the position of the first wedge is provided with at least one first through hole, the inner of which is provided with a first slide block; the side wall of the needle bar body corresponding with the position of the second wedge is provided with at least one second through hole, the inner of which is provided with a second slide block. The switching mechanism comprises needle bars, a needle bar frame, a needle bar sleeve, a needle bar driving mechanism and switching briquettings, wherein the needle bar sleeve is in connection with the needle bar driving mechanism; the needle bar frame is in connection with a translation apparatus.
Description
Technical field
The utility model relates to a kind of two-needle sewing machine; This Sewing machines has two shanks, under the effect of switching mechanism, can switch the state of two shanks; Make that wherein a shank is in running order; Another root shank is in lockup state, and more particularly, the utility model relates to the shank structure and the shank switching mechanism of two-needle sewing machine.
Background technology
One Chinese patent application CN200510103979.6 discloses a kind of needle bar mechanism of two-needle sewing machine; It is needle bar mechanism with the two-needle sewing machine that can stop the single needle hold function that a pair of shank moves up and down selectively; Comprise: keep a pair of shank of eedle, the shank supporter that can support said a pair of shank respectively, the shank up-down mechanism of utilizing the shank abut that keeps said a pair of shank respectively to make said each shank to move up and down with moving up and down, selectively will switch on by each shank of said shank abut maintenance hold mode and disarm state clutch, be used to switch the switching mechanism of clutch state and will be remained in the limiting mechanism on the said shank supporter by the shank that said clutch has been removed hold mode, be provided with simultaneously that protrusion engages and the whereabouts that can stop to fall prevents to use the holding section on said each shank excircle and with said shank abut.On each shank; Be provided with first mating holes that cooperates with said clutch and second mating holes that cooperates with said limiting mechanism; Said holding section is set on said each shank;, can limiting mechanism be cooperated with said second mating holes maybe and can clutch be cooperated with said first mating holes to the moving of top dead-centre through said shank abut.Wherein said clutch and limiting mechanism are respectively the slide bolt assembly that can insert above-mentioned first mating holes, second mating holes.
In the such scheme, the structure more complicated of shank, processing and manufacturing is difficulty comparatively; Though the duty of two shanks can be switched, the position can not be switched, and in some cases, in electro-pattern-sewing machine, said structure also not exclusively is suitable for.In addition, its switching mechanism also exists complex structure, the big defective of control difficulty.
The utility model content
The technical problem that the utility model will solve provide a kind of structure simpler, make the shank of two-needle sewing machine more easily, to overcome the above-mentioned defective of prior art.
In order to solve the problems of the technologies described above; The utility model adopts following technical scheme: a kind of shank of two-needle sewing machine, comprise a hollow shank body, and the lower end of shank body is fixedly connected a shank head that is used to install eedle; Be equiped with back-moving spring, first voussoir, second voussoir in the said shank body successively and switch depression bar; Expose in the shank body upper end of switching depression bar, the tip of first voussoir down, the tip of second voussoir is up; Position corresponding to first voussoir on the sidewall of shank body offers first through hole, is provided with first slide block in first through hole; Position corresponding to second voussoir on the sidewall of shank body offers second through hole, is provided with second slide block in second through hole; When on switching depression bar, being in free state, first voussoir allows in the first slide retraction shank body, and second voussoir then pushes second slide block makes second slide block protrude from the outer surface of shank body; When switching depression bar upper end pressurized, first voussoir and second voussoir move downward simultaneously, and first voussoir pushes first slide block makes first slide block protrude from the outer surface of shank body, and second voussoir then allows in the second slide retraction shank body.
Preferably, said first through hole is a plurality of, is uniformly distributed along the circumference, and is provided with one first slide block in each first through hole; Said second through hole is a plurality of, is uniformly distributed along the circumference, and is provided with one second slide block in each second through hole.
Preferably, said first slide block and second slide block are steel ball.
Preferably, an end cap is fixed in the upper end of said shank body, and the upper end of said switching depression bar passes from end cap, switches depression bar and is provided with the positive stop lug boss that matches with end cap.
Preferably, respectively being provided with taper seat on said first voussoir and second voussoir matches with said first slide block, second slide block.
Another technical problem that the utility model will solve provides a kind of shank switching mechanism with two-needle sewing machine of unique operating position.
In order to solve the problems of the technologies described above, the technical scheme of the utility model is: a kind of shank switching mechanism of two-needle sewing machine comprises needle bar frame, shank cover, needle bar drive device; Said shank cover links to each other with needle bar drive device, it is characterized in that, also comprises two shanks as claimed in claim 1; Said two shanks are parallel to be located in needle bar frame and the shank cover; Wherein a shank is in the operating position, and on the operating position, the switching depression bar of shank upper end is in free state; Be slidingly matched in the first slide retraction shank body and with needle bar frame, second slide block protrudes from the outer surface of shank body and is fixedly connected with the shank cover; Another root shank is in the lock position; On the lock position; The top of shank is provided with hard-wired switching briquetting; Switch the upper end that depression bar is switched in the briquetting compressing, first slide block protrudes from the outer surface of shank body and is fixedly connected with needle bar frame, is slidingly matched in the second slide retraction shank body and with the shank cover; Said needle bar frame also is connected with translating device, and translating device can promote needle bar frame and move and make the shank on the operating position move to the lock position, makes the shank on the lock position move to the operating position simultaneously.
Preferably, said operating position is one, and the lock position is two, and two lock positions lay respectively at the both sides of operating position.
Preferably, said translating device is made up of the cylinder that is arranged on the needle bar frame both sides.
Preferably, each sheathed shank stop collar on said two shanks, each is connected said shank stop collar with a position limiting slide block, and a said position limiting slide block and a coulisse are slidingly matched.
Preferably, said needle bar drive device is a toggle.
The beneficial effect of the utility model is: the shank structure simple appearance of the utility model, the shape of member be rule more, and processing and assembling are all convenient; When the switching depression bar pressurized on the shank, its pairing shank switches to lockup state by duty, and this change action is simple and reliable.Be provided with translating device in the utility model shank switching mechanism; Can drive the needle bar frame translation; Thereby the position of two shanks is changed, and shank also realized the switching of duty in change in location, made the control that shank switches become very simple; In addition, in the utility model,, all be in same operating position, be more suitable for like this in electro-pattern-sewing machine, using no matter be any root shank work.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done further explain.
Fig. 1 is the structural representation of the shank of the utility model two-needle sewing machine.
Fig. 2 is the partial enlarged drawing at A place among Fig. 1.
Fig. 3 is the partial enlarged drawing at B place among Fig. 1.
Fig. 4 is the structural representation of the shank switching mechanism of the utility model two-needle sewing machine.
Fig. 5 is the STRUCTURE DECOMPOSITION sketch map of the shank switching mechanism of the utility model two-needle sewing machine.
The specific embodiment
As shown in Figure 1, the shank of a kind of two-needle sewing machine of the utility model comprises a hollow shank body 106, and the lower end of shank body 106 is fixedly connected a shank head 101, is used to install eedle.In shank body 106, be equiped with back-moving spring 102, first voussoir 103, second voussoir 104 successively and switch depression bar 105; Expose in shank body 106 upper end of switching depression bar 105; Deviate from shank body 106 in order to limit switching depression bar 105; Present embodiment is a fixing end cap 108 in the upper end of shank body 106, and the upper end of switching depression bar 105 passes from end cap 108, switches depression bar 105 and is provided with the positive stop lug boss 107 that matches with end cap 108.
As shown in Figure 2, be provided with first slide block 111 offering in first through hole, 110, the first through holes 110 corresponding to the position of first voussoir 103 on the sidewall of shank body 106.In this preferred embodiment, first through hole 110 is a plurality of, is uniformly distributed along the circumference, and is equipped with one first slide block 111 in each first through hole 110; First voussoir 103 is made up of one section face of cylinder and one section taper seat, and the tip of taper seat down.
As shown in Figure 3, be provided with second slide block 121 offering in second through hole, 120, the second through holes 120 corresponding to the position of second voussoir 104 on the sidewall of shank body 106.In this preferred embodiment, second through hole 120 is a plurality of, is uniformly distributed along the circumference, and is provided with one second slide block 121 in each second through hole 120; Second voussoir 104 is made up of one section face of cylinder and one section taper seat, and the tip of taper seat up.
In conjunction with Fig. 1-Fig. 3, when switching depression bar 105 upper ends were in free state, under the effect of back-moving spring 102, the less position of first voussoir, 103 diameters contacted with first slide block 111, allowed in first slide block, the 111 withdrawal shank bodies (as shown in Figure 2); The position that second voussoir, 104 taper seat diameters are bigger contacts with a plurality of second slide blocks 121 simultaneously, pushes second slide block 121 and makes second slide block 121 protrude from the outer surface (as shown in Figure 3) of shank body 106.When switching depression bar 105 upper end pressurizeds; Drive first voussoir 103 and second voussoir 104 moves downward; The position that first voussoir, 103 taper seat diameters are bigger contacts with a plurality of first slide blocks 111 gradually; Push first slide block 111 and make first slide block 111 protrude from the outer surface of shank body 106,104 of second voussoirs become the less position of diameter and contact with second slide block 121, thereby allow in second slide block, the 121 withdrawal shank bodies 106.
In above-mentioned preferred embodiment, first slide block 111 and second slide block 121 all adopt spherical steel ball, but also can adopt other shape, such as pin shape etc.
Like Fig. 4, shown in Figure 5, the shank switching mechanism of a kind of two-needle sewing machine of the utility model comprises two shanks 1,1 ' with said structure, and shank 1,1 ' lower end are used to install eedle, and the eedle on two shanks 1,1 ' is used to wear the line of different colours.Also comprise needle bar frame 2, shank cover 6 and needle bar drive device 4, shank cover 6 links to each other the common toggle of needle bar drive device 4 employings with needle bar drive device 4.
Two shank 1,1 ' parallel needle bar frames 2 that are located in overlap in 6 with shank; Wherein a shank 1 is in the operating position; On the operating position, switching depression bar 105 upper ends of shank 1 are in free state, are slidingly matched in its first slide block, 111 withdrawal shank bodies and with needle bar frame 2; Thereby second slide block 121 protrudes from the outer surface of shank body engages (see figure 4) with the draw-in groove that shank overlaps 6 lower surfaces, forms a fixed connection.Like this, needle bar drive device 4 drives shank 1 through shank cover 6 and in needle bar frame 2, moves up and down, and realizes sewing operation.
Another root shank 1 ' is in the lock position; On the lock position; The top of shank 1 ' is provided with hard-wired switching briquetting 5; Switch the upper end that depression bar 105 ' is switched in briquetting 5 compressings, first slide block 111 ' that in its first through hole 110 ', slides protrudes from the outer surface of shank body and engages with the draw-in groove of needle bar frame 2 end faces, forms a fixed connection; Second slide block 121 ' that in its second through hole 120 ', slides is then withdrawn in the shank body and is overlapped 6 with shank and is slidingly matched; Shank cover 6 just can not drive shank 1 ' and moves up and down like this, and shank 1 ' is locked on the needle bar frame 2.
When needs switched shank (when sewing, need change the color of line), translating device promoted needle bar frame 2 and moves, and made the shank 1 that originally is on the operating position move to the lock position, made the shank 1 ' that originally is on the lock position move to the operating position simultaneously.Originally after being in shank 1 on the operating position and moving to the lock position; Because the top, lock position is provided with the switching briquetting, therefore when shank 1 arrived top dead-centre under the drive of shank cover 6, the switching depression bar 105 of shank 1 upper end was oppressed; Make the state of shank 1 accomplish switching; Its first slide block 111 protrusions and 121 withdrawals of second slide block become between shank 1 overlaps 6 with shank and are slidingly matched, and are fixedly connected and locking with becoming between the needle bar frame 2.Originally after being in shank 1 ' on the lock position and moving to the operating position; Because the switching briquetting is not established in the top, operating position; Therefore the switching depression bar 105 ' of shank 1 ' upper end is released, and completion status is switched under the effect of portion's back-moving spring within it, and its first slide block 111 ' is withdrawn and second slide block, 121 ' protrusion; Become between shank 1 ' and the shank cover 6 and be fixedly connected; And become between the needle bar frame 2 and be slidingly matched, shank cover 6 drives shank 1 ' again and in needle bar frame 2, moves up and down like this, realizes sewing operation.
In the time of need switching shank once more, translating device promotes needle bar frame 2 again and gets final product toward moved back.
Therefore, in above-mentioned handoff procedure, the operating position has only one, and the lock position is two, and two lock positions lay respectively at the both sides of operating position.
In order to guarantee the good guidance of two shanks when moving up and down; Present embodiment also two shanks 1,1 ' is gone up each sheathed shank stop collar 9,9 '; Said shank stop collar 9,9 ' respectively is connected with a position limiting slide block 10,10 ', and position limiting slide block 10,10 ' and one coulisse 11 are slidingly matched, and offer the chute of twice vertical direction on the coulisse 11; When shank switches to the operating position by the lock position; Be slidingly matched by being fixedly connected to become between shank and the needle bar frame 2, this shank can fall under the effect of gravity, contacts until the upper end of shank stop collar and shank cover 6; Second slide block 121 on the shank also protruded from the outer surface of shank body and engage with draw-in groove that shank overlaps 6 lower surfaces this moment, so just overlapped 6 upper/lower terminal at shank and all formed spacing and fixed connection.
Claims (10)
1. the shank of a two-needle sewing machine; It is characterized in that comprise a hollow shank body (106), the lower end of shank body (106) is fixedly connected a shank head (101) that is used to install eedle; Be equiped with back-moving spring (102), first voussoir (103), second voussoir (104) in the said shank body (106) successively and switch depression bar (105); Expose in shank body (106) upper end of switching depression bar (105), the tip of first voussoir (103) down, the tip of second voussoir (104) is up; Position corresponding to first voussoir (103) on the sidewall of shank body (106) offers first through hole (110), is provided with first slide block (111) in first through hole (110); Position corresponding to second voussoir (104) on the sidewall of shank body (106) offers second through hole (120), is provided with second slide block (121) in second through hole (120); When on switching depression bar (105), being in free state, first voussoir (103) allows in first slide block (111) the withdrawal shank body (106), and second voussoir (104) then pushes second slide block (121) makes second slide block (121) protrude from the outer surface of shank body (106); When switching depression bar (105) upper end pressurized; First voussoir (103) and second voussoir (104) move downward simultaneously; First voussoir 103) extruding first slide block (111) makes first slide block (111) protrude from the outer surface of shank body (106), and second voussoir (104) then allows second slide block (121) withdrawal shank body 106) in.
2. the shank of two-needle sewing machine according to claim 1 is characterized in that, said first through hole (110) is a plurality of, is uniformly distributed along the circumference, and is provided with one first slide block (111) in each first through hole (110); Said second through hole (120) is a plurality of, is uniformly distributed along the circumference, and is provided with one second slide block (121) in each second through hole (120).
3. the shank of two-needle sewing machine according to claim 1 and 2 is characterized in that, said first slide block (111) and second slide block (121) are steel ball.
4. the shank of two-needle sewing machine according to claim 1; It is characterized in that; An end cap (108) is fixed in the upper end of said shank body (106), and the upper end of said switching depression bar (105) passes from end cap (108), switches depression bar (105) and is provided with the positive stop lug boss (107) that matches with end cap (108).
5. the shank of two-needle sewing machine according to claim 1 is characterized in that, respectively is provided with taper seat on said first voussoir (103) and second voussoir (104) and matches with said first slide block (111), second slide block (121).
6. the shank switching mechanism of a two-needle sewing machine comprises needle bar frame (2), shank cover (6), needle bar drive device (4), and said shank cover (6) links to each other with needle bar drive device (4); It is characterized in that; Also comprise two shanks as claimed in claim 1 (1,1 '), said two shanks (1; 1 ') parallel being located in needle bar frame (2) and the shank cover (6); Wherein a shank (1) is in the operating position, and on the operating position, the switching depression bar (105) of shank (1) upper end is in free state; Be slidingly matched in first slide block (111) the withdrawal shank body (106) and with needle bar frame (2), second slide block (121) protrudes from shank body 106) outer surface and be fixedly connected with shank cover (6); Another root shank (1 ') is in the lock position; On the lock position; The top of shank (1 ') is provided with hard-wired switching briquetting (5); Switch the upper end that depression bar (105 ') is switched in briquetting (5) compressing, first slide block (111 ') protrudes from the outer surface of shank body and is fixedly connected with needle bar frame (2), is slidingly matched in second slide block (121 ') the withdrawal shank body and with shank cover (6); Said needle bar frame (2) also is connected with translating device, and translating device can promote needle bar frame (2) and move and make the shank on the operating position move to the lock position, makes the shank on the lock position move to the operating position simultaneously.
7. shank switching mechanism according to claim 6 is characterized in that, said operating position is one, and the lock position is two, and two lock positions lay respectively at the both sides of operating position.
8. shank switching mechanism according to claim 6 is characterized in that, said translating device is made up of the cylinder that is arranged on needle bar frame (2) both sides (3,7,8).
9. shank switching mechanism according to claim 6 is characterized in that, said two shanks (1; 1 ') go up each sheathed shank stop collar (9,9 '), said shank stop collar (9; 9 ') each and a position limiting slide block (10; 10 ') be connected, said position limiting slide block (10,10 ') is slidingly matched with a coulisse (11).
10. shank switching mechanism according to claim 6 is characterized in that, said needle bar drive device (4) is a toggle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203429487U CN202430454U (en) | 2011-09-14 | 2011-09-14 | Needle bar of double needle sewing machine and switching mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203429487U CN202430454U (en) | 2011-09-14 | 2011-09-14 | Needle bar of double needle sewing machine and switching mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202430454U true CN202430454U (en) | 2012-09-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203429487U Withdrawn - After Issue CN202430454U (en) | 2011-09-14 | 2011-09-14 | Needle bar of double needle sewing machine and switching mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202430454U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409489A (en) * | 2011-09-14 | 2012-04-11 | 新杰克缝纫机股份有限公司 | Needle rod for two-needle sewing machine, and switching mechanism for needle rod |
| CN102995312A (en) * | 2012-11-22 | 2013-03-27 | 冯品牛 | Enclosed independent dual-needle-bar driving sliding block clutch mechanism and enclosed operation method thereof |
| CN103352336A (en) * | 2013-07-12 | 2013-10-16 | 宁波舒普机电科技有限公司 | Multi-needle-bar sewing machine |
| WO2015003515A1 (en) * | 2013-07-12 | 2015-01-15 | 宁波舒普机电科技有限公司 | Multi-needle module used for sewing machine |
| CN104593958A (en) * | 2015-02-16 | 2015-05-06 | 宁波缝纫机实业有限公司 | Needle-bar switching mechanism for sewing machine |
-
2011
- 2011-09-14 CN CN2011203429487U patent/CN202430454U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409489A (en) * | 2011-09-14 | 2012-04-11 | 新杰克缝纫机股份有限公司 | Needle rod for two-needle sewing machine, and switching mechanism for needle rod |
| CN102995312A (en) * | 2012-11-22 | 2013-03-27 | 冯品牛 | Enclosed independent dual-needle-bar driving sliding block clutch mechanism and enclosed operation method thereof |
| CN102995312B (en) * | 2012-11-22 | 2014-07-09 | 冯品牛 | Enclosed independent dual-needle-bar driving sliding block clutch mechanism and enclosed operation method thereof |
| CN103352336A (en) * | 2013-07-12 | 2013-10-16 | 宁波舒普机电科技有限公司 | Multi-needle-bar sewing machine |
| WO2015003515A1 (en) * | 2013-07-12 | 2015-01-15 | 宁波舒普机电科技有限公司 | Multi-needle module used for sewing machine |
| CN104593958A (en) * | 2015-02-16 | 2015-05-06 | 宁波缝纫机实业有限公司 | Needle-bar switching mechanism for sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120912 Effective date of abandoning: 20130605 |
|
| RGAV | Abandon patent right to avoid regrant |