CN204000224U - A kind of automatic Backsewing unit of Sewing machines - Google Patents
A kind of automatic Backsewing unit of Sewing machines Download PDFInfo
- Publication number
- CN204000224U CN204000224U CN201420341122.2U CN201420341122U CN204000224U CN 204000224 U CN204000224 U CN 204000224U CN 201420341122 U CN201420341122 U CN 201420341122U CN 204000224 U CN204000224 U CN 204000224U
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- pitch base
- needle
- sewing machines
- automatic
- needle pitch
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Abstract
The utility model provides a kind of automatic Backsewing unit of Sewing machines, belongs to sewing mechanism technology for making field.It has solved, and existing Sewing machines electromagnetism Backsewing unit assembling is inconvenient, high in cost of production problem.This automatic Backsewing unit comprises feed regulator pin, needle pitch base, needle gage regulates crank and extension spring, on needle pitch base, there is the through hole running through, feed regulator pin is through in through hole, the sidepiece of needle pitch base has and all curved and connectedly backstitches contact-making surface and along seam contact-making surface, backstitch electromagnet and be connected with electromagnetism iron, the outer end of electromagnetism iron is connected with needle pitch base, electromagnetism iron can make needle pitch base rotate around feed regulator pin, needle gage adjusting screw(rod) is resisted against and backstitches on contact-making surface or suitable seam contact-making surface, the upper end of the connecting rod of falling feeding is connected with needle pitch base, lower end regulates crank to be connected with needle gage, one end of extension spring is connected to the middle and lower part of the connecting rod of falling feeding, the other end is connected on Sewing machines.The automatic Backsewing unit of this Sewing machines has easy to assembly, low cost and other advantages.
Description
Technical field
The utility model belongs to sewing mechanism technology for making field, relates to a kind of automatic Backsewing unit of Sewing machines.
Background technology
Industrial sewing machine, in operation use procedure, in order to improve the firm degree of sewing, according to different clothes requirements, usually backstitches reinforcing in beginning, centre or ending place of sewing.
On the head of Sewing machines, be all provided with at present that machinery backstitches (by backstitching control stick control) and electromagnetism backstitches (by backstitching switch control).Machinery backstitches by backstitching control stick by switching connecting rod transferring power, pass to and drive switch axle, thereby the direction of motion that drives switch to change feed dog realizes and backstitches sewing function; And electromagnetism backstitches, be by backstitching solenoid actuated electromagnetism iron, then drive switch axle by electromagnetism iron, thereby the direction of motion that drives switch to change feed dog realizes and backstitches sewing function.
In order to realize automatic pouring joint function, handled easily, existing industrial sewing machine all adopts electromagnetism to backstitch, and existing electromagnetism backstitches following two problems that exist: 1. assembling inconvenience: electromagnetism backstitches could to realize by switching connecting rod and backstitches function, needs installment and debugging to switch connecting rod when assembling; 2. cost is high: electromagnetism backstitches to need to install and switches connecting rod and other auxiliary components, and parts are various, cause cost to increase.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and a kind of automatic Backsewing unit of Sewing machines is provided, and this apparatus structure is simple, solves and how to make existing Sewing machines electromagnetism Backsewing unit easy to assembly, and cost is low.
The purpose of this utility model can realize by following technical proposal: a kind of automatic Backsewing unit of Sewing machines, it is characterized in that, comprise needle gage adjusting screw(rod), feed regulator pin, needle pitch base, backstitch electromagnet, the connecting rod of falling feeding, needle gage regulates crank and extension spring, on described needle pitch base, there is the through hole running through, described feed regulator pin is through in through hole, the sidepiece of described needle pitch base has and all curved and connectedly backstitches contact-making surface and along seam contact-making surface, the described electromagnet that backstitches is connected with electromagnetism iron, the outer end of described electromagnetism iron is connected with needle pitch base, described electromagnetism iron can make needle pitch base rotate around feed regulator pin, described needle gage adjusting screw(rod) is resisted against and backstitches on contact-making surface or suitable seam contact-making surface, the upper end of the described connecting rod of falling feeding is connected with needle pitch base, lower end regulates crank to be connected with needle gage, one end of described extension spring is connected to the middle and lower part of the connecting rod of falling feeding, the other end is connected on Sewing machines.
While backstitching, press and backstitch switch, backstitch electromagnetic actuation, electromagnetism iron is pushed out, and electromagnetism iron promotes needle pitch base, and needle pitch base is rotated around feed regulator pin, thereby needle gage adjusting screw(rod) is resisted against to be backstitched on contact-making surface, and move because the rotation of needle pitch base pulls the connecting rod of falling feeding, thereby drive needle gage to regulate crank to rotate, realize Sewing machines and backstitch function; After having backstitched, unclamp and backstitch switch, backstitch no longer adhesive of electromagnet, under the effect of tension spring tension, needle gage adjusting screw(rod), along backstitching contact-making surface, moving along seam contact-making surface, is finally resisted against along on seam contact-making surface, and the connecting rod of falling feeding, needle gage regulate crank to be returned to original state, Sewing machines is returned to previous duty, along the duty of stitching.
In the automatic Backsewing unit of above-mentioned a kind of Sewing machines, the bottom of described needle pitch base has a groove, has respectively a locating slot on the two side of described groove, and the outer end of described electromagnetism iron is fixed with pin, the outer end of described electromagnetism iron is positioned at groove, and pin is embedded in locating slot.The outer end of electromagnetism iron is positioned at the groove of needle pitch base, and after making to install, the space that occupies is less, and compact conformation is connected and installed conveniently; Pin inlay card, in locating slot, makes electromagnetism iron in mobile, can drive needle pitch base to rotate around feed regulator pin, reasonable in design.
In the automatic Backsewing unit of above-mentioned a kind of Sewing machines, the width of described electromagnetism iron and the width of groove match, and the diameter of described pin and the width of locating slot match.The width of electromagnetism iron is slightly less than the width of groove, and the diameter of pin is slightly less than the width of locating slot, and gap is little, and electromagnetism iron can not rock after installing, good stability, and electromagnetism iron can drive needle pitch base to rotate in time, and transmission accuracy is high.
In the automatic Backsewing unit of above-mentioned a kind of Sewing machines, described automatic Backsewing unit also comprises armshaft, on described armshaft, is equipped with bearing pin, and the bottom of described needle pitch base has the lug of protrusion, and above-mentioned lug can contact with bearing pin.When unclamping while backstitching switch, lug contacts with bearing pin, stops needle pitch base further to rotate, in stable condition while making Sewing machines along seam.
In the automatic Backsewing unit of above-mentioned a kind of Sewing machines, one end of described needle gage adjusting screw(rod) has knob, and the end of the other end is spherical.Knob is used for rotating needle gage adjusting screw(rod), and the other end that needle gage adjusting screw(rod) contacts with needle pitch base is spherical, and along seam contact-making surface with backstitch contact-making surface and match, facilitates needle gage adjusting screw(rod) along along seam contact-making surface with backstitch contact-making surface and slide.
Compared with prior art, in the automatic Backsewing unit of the Sewing machines that the utility model provides, have the following advantages:
1, the automatic Backsewing unit of this Sewing machines is to backstitch electromagnet to be directly connected with needle pitch base by electromagnetism iron, and needed parts are less, and cost is low.
2, the automatic Backsewing unit of this Sewing machines backstitches being connected of electromagnet and needle pitch base, and by the outer end of electromagnetism iron is placed in groove, pin is placed in locating slot, easy to assembly.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of the automatic Backsewing unit of this Sewing machines.
Fig. 2 is the right view of the automatic Backsewing unit of this Sewing machines.
Fig. 3 is the structural representation of the needle pitch base of the automatic Backsewing unit of this Sewing machines.
In figure, 1, needle gage adjusting screw(rod); 1a, knob; 2, feed regulator pin; 3, needle pitch base; 3a, through hole; 3b, backstitch contact-making surface; 3c, suitable seam contact-making surface; 3d, groove; 3e, locating slot; 3f, lug; 4, backstitch electromagnet; 5, the connecting rod of falling feeding; 6, needle gage regulates crank; 7, extension spring; 8, electromagnetism iron; 9, pin; 10, armshaft; 11, bearing pin.
Detailed description of the invention
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, 2, the automatic Backsewing unit of this Sewing machines comprises needle gage adjusting screw(rod) 1, feed regulator pin 2, needle pitch base 3, backstitches electromagnet 4, the connecting rod of falling feeding 5, needle gage regulate crank 6, extension spring 7 and armshaft 10.
As shown in Figure 3, on needle pitch base 3, there is the through hole 3a running through, the sidepiece of needle pitch base 3 has and all curved and connectedly backstitches contact-making surface 3b and along seam contact-making surface 3c, the bottom of needle pitch base 3 has groove 3d, and the middle of groove 3d two side has respectively a locating slot 3e, two locating slot 3e separate two side to form four sidewalls that length is less, and one of them sidewall protrudes downwards, form lug 3f.Armshaft 10 is positioned at the below of needle pitch base 3, and the top of axial wall is equipped with bearing pin 11, and in the time that needle pitch base 3 turns to certain angle, lug 3f contacts with bearing pin 11, and needle pitch base 3 can excessively not rotated.
Feed regulator pin 2 is through in through hole 3a.Backstitch electromagnet 4 and be connected with electromagnetism iron 8, the outer end of electromagnetism iron 8 is fixed with pin 9, and the width of electromagnetism iron 8 is slightly less than the width of groove 3d, and the diameter of pin 9 is slightly less than the width of locating slot 3e.The outer end of electromagnetism iron 8 is positioned at groove 3d, and pin 9 is positioned at locating slot 3e, makes to backstitch electromagnet 4 and is connected with needle pitch base 3, and electromagnetism iron 8 can promote needle pitch base 3 and rotate around feed regulator pin 2.
One end of needle gage adjusting screw(rod) 1 has knob 1a, stage casing is external thread structure, the end of the other end is spherical, the other end of needle gage adjusting screw(rod) 1 can be resisted against and backstitch contact-making surface 3b, also can be resisted against along on seam contact-making surface 3c, sphere contacts with arc, while making needle gage adjusting screw(rod) 1 edge backstitch contact-making surface 3b, suitable seam contact-making surface 3c slip, slides smooth and easy.
The connecting rod of falling feeding 5 is strip, the upper end of the connecting rod of falling feeding 5 and needle pitch base 3 are hinged, lower end and needle gage regulate crank 6 to be hinged, the middle and lower part of the connecting rod of falling feeding 5 has pulling eye, one end of extension spring 7 is through in pulling eye and is connected with the connecting rod of falling feeding 5, and the other end is connected on Sewing machines and (on figure, does not mark).
When work, while backstitching, press and backstitch switch, backstitch electromagnet 4 adhesives, electromagnetism iron 8 is pushed out, promoting needle pitch base 3 rotates around feed regulator pin 2, make needle gage adjusting screw(rod) 1 be spherical one end and move and be resisted against that to backstitch contact-making surface 3b upper, and send connecting rod to move because the rotation of needle pitch base 3 pulls, thereby drive needle gage to regulate crank 6 to rotate, change the direction of motion of Sewing machines, realize the function that backstitches of Sewing machines.After completing and backstitching, need to be switched to along seam, unclamp and backstitch switch, backstitch no longer adhesive of electromagnet 4, under the pulling force effect of extension spring 7, the connecting rod of falling feeding 5 moves up, drive needle pitch base 3 to rotate, until lug 3f is resisted against on bearing pin 11, now, needle gage adjusting screw(rod) 1 is resisted against along on seam contact-making surface 3c, needle gage regulates crank 6 to be returned to original state, the direction of motion that changes Sewing machines, Sewing machines is returned to previous duty, realizes along joint function.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used needle gage adjusting screw(rod) 1, knob 1a, feed regulator pin 2, needle pitch base 3, through hole 3a herein, backstitched contact-making surface 3b, along seam contact-making surface 3c, groove 3d, locating slot 3e, lug 3f, backstitch the terms such as electromagnet 4, the connecting rod of falling feeding 5, needle gage adjusting crank 6, extension spring 7, electromagnetism iron 8, pin 9, armshaft 10, bearing pin 11, do not get rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (5)
1. the automatic Backsewing unit of a Sewing machines, it is characterized in that, comprise needle gage adjusting screw(rod) (1), feed regulator pin (2), needle pitch base (3), backstitch electromagnet (4), the connecting rod of falling feeding (5), needle gage regulates crank (6) and extension spring (7), on described needle pitch base (3), there is the through hole (3a) running through, described feed regulator pin (2) is through in through hole (3a), the sidepiece of described needle pitch base (3) has and all curved and connectedly backstitches contact-making surface (3b) and along seam contact-making surface (3c), the described electromagnet (4) that backstitches is connected with electromagnetism iron (8), the outer end of described electromagnetism iron (8) is connected with needle pitch base (3), described electromagnetism iron (8) can make needle pitch base (3) rotate around feed regulator pin (2), described needle gage adjusting screw(rod) (1) is resisted against and backstitches on contact-making surface (3b) or suitable seam contact-making surface (3c), the upper end of the described connecting rod of falling feeding (5) is connected with needle pitch base (3), lower end regulates crank (6) to be connected with needle gage, one end of described extension spring (7) is connected to the middle and lower part of the connecting rod of falling feeding (5), the other end is connected on Sewing machines.
2. the automatic Backsewing unit of a kind of Sewing machines according to claim 1, it is characterized in that, the bottom of described needle pitch base (3) has a groove (3d), on the two side of described groove (3d), there is respectively a locating slot (3e), the outer end of described electromagnetism iron (8) is fixed with pin (9), the outer end of described electromagnetism iron (8) is positioned at groove (3d), and pin (9) is embedded in locating slot (3e).
3. the automatic Backsewing unit of a kind of Sewing machines according to claim 2, it is characterized in that, the width of the width of described electromagnetism iron (8) and groove (3d) matches, and the width of the diameter of described pin (9) and locating slot (3e) matches.
4. according to the automatic Backsewing unit of a kind of Sewing machines described in claim 1 or 2 or 3, it is characterized in that, described automatic Backsewing unit also comprises armshaft (10), on described armshaft (10), be equipped with bearing pin (11), the bottom of described needle pitch base (3) has the lug (3f) of protrusion, and above-mentioned lug (3f) can contact with bearing pin (11).
5. according to the automatic Backsewing unit of a kind of Sewing machines described in claim 1 or 2 or 3, it is characterized in that, one end of described needle gage adjusting screw(rod) (1) has knob (1a), and the end of the other end is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420341122.2U CN204000224U (en) | 2014-06-24 | 2014-06-24 | A kind of automatic Backsewing unit of Sewing machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420341122.2U CN204000224U (en) | 2014-06-24 | 2014-06-24 | A kind of automatic Backsewing unit of Sewing machines |
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| Publication Number | Publication Date |
|---|---|
| CN204000224U true CN204000224U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420341122.2U Expired - Fee Related CN204000224U (en) | 2014-06-24 | 2014-06-24 | A kind of automatic Backsewing unit of Sewing machines |
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| CN (1) | CN204000224U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562458A (en) * | 2015-01-20 | 2015-04-29 | 上海标准海菱缝制机械有限公司 | Full-automatic control device and method of cloth dragging wheel of sewing machine |
| CN104988672A (en) * | 2015-08-07 | 2015-10-21 | 雷建发 | Sewing machine backstitching rod control structure |
| CN105734849A (en) * | 2016-04-27 | 2016-07-06 | 杰克缝纫机股份有限公司 | Stitch length adjusting mechanism of lockstitch sewing machine |
| CN107326555A (en) * | 2017-08-07 | 2017-11-07 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN109023745A (en) * | 2018-09-20 | 2018-12-18 | 陈梓豪 | A kind of new-type sewing machine backstitches mechanism automatically |
-
2014
- 2014-06-24 CN CN201420341122.2U patent/CN204000224U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104562458A (en) * | 2015-01-20 | 2015-04-29 | 上海标准海菱缝制机械有限公司 | Full-automatic control device and method of cloth dragging wheel of sewing machine |
| CN104562458B (en) * | 2015-01-20 | 2018-08-10 | 上海标准海菱缝制机械有限公司 | A kind of device for automatically controlling and control method of sewing machine cloth-dragging wheel |
| CN104988672A (en) * | 2015-08-07 | 2015-10-21 | 雷建发 | Sewing machine backstitching rod control structure |
| CN105734849A (en) * | 2016-04-27 | 2016-07-06 | 杰克缝纫机股份有限公司 | Stitch length adjusting mechanism of lockstitch sewing machine |
| CN105734849B (en) * | 2016-04-27 | 2019-03-01 | 杰克缝纫机股份有限公司 | Flush joint needle pitch regulating mechanism |
| CN107326555A (en) * | 2017-08-07 | 2017-11-07 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107326555B (en) * | 2017-08-07 | 2020-01-31 | 杰克缝纫机股份有限公司 | kinds of sewing machine |
| CN109023745A (en) * | 2018-09-20 | 2018-12-18 | 陈梓豪 | A kind of new-type sewing machine backstitches mechanism automatically |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |