CN2918483Y - Needle distance stop dog - Google Patents
Needle distance stop dog Download PDFInfo
- Publication number
- CN2918483Y CN2918483Y CN 200620042373 CN200620042373U CN2918483Y CN 2918483 Y CN2918483 Y CN 2918483Y CN 200620042373 CN200620042373 CN 200620042373 CN 200620042373 U CN200620042373 U CN 200620042373U CN 2918483 Y CN2918483 Y CN 2918483Y
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- CN
- China
- Prior art keywords
- needle
- center
- needle gage
- distance
- latch
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to a needle space stopper, which comprises a needle space oscillating bar 3 arranged in a frame head upright column 20 and a needle space adjusting index plate 2 arranged on one side of the needle space oscillating bar 3 on the upright column, wherein one side of the needle space oscillating bar 3 is tightly kept close to an end section of a threaded rod 2a of the needle space adjusting index plate 2; an elastic retaining pin 1 is arranged on one side of the needle space adjusting index plate 2 outside of the upright column 20; an eccentric retaining ring 15 is sleeved on the threaded rod 2a and a circular hole 15a sleeved on the threaded rod 2a is arranged on the eccentric retaining ring; an opening eccentric ring groove 15b is arranged in the outer circle of the circular hole, the diameter of the opening end center of the ring groove is the same as the distance from a threaded rod 2a center to a retaining pin 1 center, the diameter of a tail end center of the groove is longer or shorter than the distance from the threaded rod 2a center to the retaining pin 1 center; a spanner section 15c is arranged on one side of the ring groove. The utility model has the advantages of simple structure and low production cost, convenience for installation and operation, reliability of needle space retaining function and no need to change the sewing machine body.
Description
Technical field
The utility model relates to industrial sewing machine, specifically refers to a kind of industrial flat bed sewing machine, refers to the stop device of the needle gage governor motion of flat seam machine especially.
Background technology
Present flat seam machine generally is equipped with the needle gage adjusting device, and its structure is: be provided with a needle distance pendulum rod 3 in head column 20 chambeies, this fork links to each other with cloth pushing shaft 10 with a needle gage coupled frame assembly 9 and a cloth feeding crank 12 by a needle gage connecting rod 7; Described needle distance pendulum rod 3 also links to each other with described needle gage coupled frame assembly 9 by a work feed connecting rod 8, and described work feed connecting rod 8 backstitches crank 5 and backstitches control stick 4 and link to each other by one; The lower end of described work feed connecting rod 8 links to each other with needle gage coupled frame 9; Be provided with the electronic type of suitable control, needle gage coupled frame 9 also links to each other with the plug 13 that backstitches electromagnet; Side at described needle distance pendulum rod 3 is provided with needle gage adjusting bidding quotation 2, because the effect of spring 6, one side of needle distance pendulum rod 3 is close to the end that needle gage is regulated the screw rod 2a on the bidding quotation 2 all the time, the side design that needle distance pendulum rod 3 contacts with adjusting bidding quotation 2 has the needle gage curve, this curve is divided into upper and lower two parts, the needle gage of upper curve 3s when acting in accordance with feeding, the needle gage in lower curve 3d corresponding when falling the feeding.
Rotation needle gage adjusting bidding quotation 2 can make needle distance pendulum rod 3 produce slightly swing by the advance and retreat of its screw rod 2a end, and passes through the amplitude of fluctuation of needle gage connecting rod 7, needle gage coupled frame assembly 9 and cloth feeding crank 12 adjusting cloth pushing shafts 10, i.e. metering needle distance.Pull backstitch control stick 4 can be by backstitching crank 5, needle distance pendulum rod 3 is significantly swung, the curve of screw rod 2a end contact is switched between upper curve 3s and lower curve 3d, work feed connecting rod 8 also drives 9 swings of needle gage coupled frame assembly simultaneously, adjust the motion phase relation between cloth pushing shaft 11 and feed lifting rock shaft (not shown), thereby realize suitable, the control of falling the work feed.Electronic when falling along control, control needle gage coupled frame assembly 9 and needle distance pendulum rod 3 swings by the iron core 13 of electromagnet 14, with realize, along seam control.
Because each fall, during along seam control, the rotation that needle distance pendulum rod 3 is all wanted wide-angle once and is knocked the screw rod that needle gage is regulated bidding quotation 2, particularly adopts electronic falling when controlling, its impulsive force is bigger.Under frequent knocking, the position that often makes needle gage regulate bidding quotation 2 produces drift, and needle gage produces uncertain variation when making sewing, thereby causes frequently occurring waster.
In the prior art, regulate the position excursion of bidding quotation 2, on column 20 outer walls, establish one and be with flexible latch 1, regulate on the bidding quotation 2 at needle gage and establish a stopping gear (not shown) accordingly in needle gage adjusting bidding quotation 2 nearsides for preventing needle gage.Metering needle not apart from the time, this latch 1 retaining is regulated the wheel between cog of the stopping gear on the bidding quotation 2 at needle gage, to stop its rotation; The rotation needle gage regulate bidding quotation 2 metering needles apart from the time, tiltedly splitting on bidding quotation 2 internal gears makes latch 1 to the retraction of column direction, do not influence the rotation that needle gage is regulated bidding quotation 2.Do not influence the regulatory function that needle gage is regulated bidding quotation 2 owing to will guarantee latch 1,, can not thoroughly solve the position excursion problem that needle gage is regulated bidding quotation 2 so the stopping function of this device is limited.
Summary of the invention
The purpose of this utility model is to propose a kind of sewing needle distance retainer, by it latch and needle gage is regulated the locking action of bidding quotation, guarantee frequent fall, along control in, needle gage does not change, thereby overcomes the shortcoming of prior art.
A kind of needle gage retainer of the present utility model, mainly comprise the needle distance pendulum rod of being located in the head column 20 3, the needle gage of being located on the column that is positioned at needle distance pendulum rod 3 one sides is regulated bidding quotation 2, one side of described needle distance pendulum rod 3 is close to the end that needle gage is regulated the screw rod 2a on the bidding quotation 2, be provided with one in needle gage adjusting bidding quotation 2 one sides outside the column 20 and be with flexible latch 1, it is characterized in that: the screw rod 2a position that is positioned at the column outside of regulating bidding quotation 2 at needle gage, sheathed one eccentric locating snap ring 15 is on this locating snap ring: a circular hole 15a that can be set on the screw rod 2a is arranged; The eccentric annular groove 15b of 1 opening is arranged in the outer ring of described circular hole, and this cannelure openend radius centered is identical to the distance at latch 1 center with screw rod 2a center, and the terminal radius centered of its groove is greater than or less than the distance of screw rod 2a center to latch 1 center; The one side is provided with the 15c of spanner portion.
Pull the rotatable eccentric locating snap ring 15 of the 15c of spanner portion.When pivot stop ring 15 made its position be in latch 1 not enter among its eccentric annular groove 15b, it is free to rotate that needle gage is regulated bidding quotation 2, carries out needle gage and regulate; When pivot stop ring 15 makes its position be in latch 1 to enter among its eccentric annular groove 15b, because its wobbler action, latch 1 is lockable, because latch 1 acts on mutually with the gear in the needle gage bidding quotation, so needle gage is regulated bidding quotation 2 and also tightly pinned, thereby reach the effect that prevents needle gage adjusting bidding quotation 2 position excursions.
The utility model has the advantages that simple in structure, low production cost; Easy to install and use, the needle gage stopping function is reliable; Need not Sewing machines itself is changed.
Description of drawings
Fig. 1 is the structural principle schematic diagram of needle gage retainer of the present utility model;
Fig. 2 is the structural representation of the locating snap ring among Fig. 1.
Among the figure: 1 latch, 2 needle gages are regulated bidding quotation, 3 needle distance pendulum rods, 4 backstitch control stick, and 5 backstitch crank, 6 springs, 7 needle gage connecting rods, 8 work feed connecting rods, 9 needle gage coupled frames, 10 connecting rods, 11 cloth pushing shafts, 12 cloth feeding cranks, 13 backstitch the electromagnet plug, and 14 backstitch electromagnet, 15 locating snap rings, 20 head columns.
The specific embodiment
As Fig. 1, in head of sewing machine column 20 chambeies, be provided with needle distance pendulum rod 3, on column 20, be provided with needle gage and regulate bidding quotation 2, needle distance pendulum rod 3 is close to the screw rod 2a end of bidding quotation 2, driving its screw rod 2a by turn bidding quotation 2 advances or moves back, the contact position of the curve on fine-tuning screw rod 2a end and the needle distance pendulum rod 3, and pass through the amplitude of oscillation that mechanisms such as connecting rod, crank change cloth pushing shaft, metering needle distance.At column 20 outer walls, regulate bidding quotation 2 one sides in needle gage one elasticity latch 1 arranged.Screw rod 2a position between needle gage adjusting bidding quotation 2 and column outer wall, sheathed one eccentric locating snap ring 15, the one side is provided with the 15c of spanner portion, pulls the 15c of spanner portion, and locating snap ring 15 is rotated on screw rod 2a.
The structure of this locating snap ring as shown in Figure 2.Whole locating snap ring 15 is stamped to form by metallic plate, and a circular hole 15a that can be set on the screw rod 2a is arranged on the ring, and the aperture of this circular hole 15a and the diameter of screw rod 2a are movingly.The eccentric annular groove 15b of 1 opening is arranged in the outer ring of described circular hole 15a, the openend center radius Rb1 of this off-centre annular groove 15b is identical to the distance at latch 1 center with screw rod 2a center, and the terminal radius centered Rb2 of its annular groove is greater than the distance of screw rod 2a center to latch 1 center.The terminal radius centered Rb2 of described annular groove also can be smaller than the distance of screw rod 2a center to latch 1 center.
During sewing operation, after regulating needle gage at every turn, as long as pull the 15c of spanner portion, locating snap ring 15 is rotated on screw rod 2a, make its eccentric annular groove 15b part block latch 1 gradually, because latch 1 is fixed, therefore, the eccentric structure of eccentric annular groove 15b increases the circular hole 15a of locating snap ring and the external diameter nonconcentricity of screw rod 2a gradually, and is when the end of eccentric annular groove 15b arrives latch 1, just that latch 1 and needle gage adjusting bidding quotation 2 is tightly locked.
In the present embodiment, on locating snap ring 15, the relative annular groove 15d that also has a reverse opening with eccentric annular groove 15b, the terminal radius centered Rd of this annular groove and screw rod 2a center to the distance at latch 1 center equate and groove width greater than the diameter of latch 1.When oppositely pulling the 15c of spanner portion, latch 1 progresses into this annular groove 15d, and finally when the terminal arrival of annular groove latch 1, locating snap ring 15 does not influence the needle gage regulatory function that needle gage is regulated bidding quotation 2.
Claims (2)
1. needle gage retainer, mainly comprise the needle distance pendulum rod of being located in head column (20) chamber (3), the needle gage of being located on the column that is positioned at needle distance pendulum rod (3) one sides is regulated bidding quotation (2), one side of described needle distance pendulum rod (3) is close to the end that needle gage is regulated the screw rod (2a) on the bidding quotation (2), column (20) outer wall is regulated bidding quotation (2) one sides in needle gage and is provided with one and is with flexible latch (1), it is characterized in that: regulate at needle gage on the screw rod (2a) that is positioned at the column outside of bidding quotation (2), sheathed one eccentric locating snap ring (15), on this locating snap ring:
-circular hole (15a) that can be set on the screw rod (2a) arranged;
-the eccentric annular groove (15b) of 1 opening arranged in the outer ring of described circular hole, this cannelure openend radius centered (Rb1) and screw rod (2a) center are suitable to the distance at latch (1) center, terminal radius centered of its groove (Rb2) greater than or be smaller than the distance of screw rod (2a) center to latch (1) center;
-one side is provided with spanner portion (15c).
2. needle gage retainer according to claim 1, it is characterized in that at last, the relative adjusting annular groove (15d) that also has an opening of described locating snap ring (15) with eccentric annular groove (15b), the terminal radius centered of this annular groove (Rd) equates with the distance of screw rod (2a) center to latch (1) center, and groove width is greater than the diameter of latch (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042373 CN2918483Y (en) | 2006-06-02 | 2006-06-02 | Needle distance stop dog |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620042373 CN2918483Y (en) | 2006-06-02 | 2006-06-02 | Needle distance stop dog |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918483Y true CN2918483Y (en) | 2007-07-04 |
Family
ID=38216298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620042373 Expired - Fee Related CN2918483Y (en) | 2006-06-02 | 2006-06-02 | Needle distance stop dog |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918483Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032490A (en) * | 2014-06-24 | 2014-09-10 | 新杰克缝纫机股份有限公司 | Needle pitch adjusting and locking device and sewing machine |
| CN107780060A (en) * | 2016-08-25 | 2018-03-09 | 浙江美机缝纫机有限公司 | The needle gage dial plate locker of flat seam machine |
| CN108796841A (en) * | 2018-06-29 | 2018-11-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
-
2006
- 2006-06-02 CN CN 200620042373 patent/CN2918483Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032490A (en) * | 2014-06-24 | 2014-09-10 | 新杰克缝纫机股份有限公司 | Needle pitch adjusting and locking device and sewing machine |
| CN107780060A (en) * | 2016-08-25 | 2018-03-09 | 浙江美机缝纫机有限公司 | The needle gage dial plate locker of flat seam machine |
| CN107780060B (en) * | 2016-08-25 | 2022-12-23 | 浙江美机缝纫机有限公司 | Needle gauge dial plate locking device of lockstitch sewing machine |
| CN108796841A (en) * | 2018-06-29 | 2018-11-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN108796841B (en) * | 2018-06-29 | 2021-01-05 | 杰克缝纫机股份有限公司 | Sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20110602 |