CN220846572U - Thread hooking structure of sewing machine - Google Patents
Thread hooking structure of sewing machine Download PDFInfo
- Publication number
- CN220846572U CN220846572U CN202322544208.7U CN202322544208U CN220846572U CN 220846572 U CN220846572 U CN 220846572U CN 202322544208 U CN202322544208 U CN 202322544208U CN 220846572 U CN220846572 U CN 220846572U
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- needle
- frame body
- needle frame
- sewing machine
- thread
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- 238000009958 sewing Methods 0.000 title claims abstract description 35
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 239000004744 fabric Substances 0.000 description 16
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The application relates to a thread hooking structure of a sewing machine, which comprises three curved needles and a needle frame assembly, wherein the needle frame assembly comprises a needle frame body and a curved needle shaft, three first step surfaces with different inclined directions are arranged on the top surface of the needle frame body, the three first step surfaces respectively correspond to the three curved needles, one ends of the three curved needles are sequentially and detachably connected to the corresponding first step surfaces along the distribution direction of three pinholes on an inclined three-needle plate, the curved needle shaft is penetrated and detachably connected to the bottom end of the needle frame body, the curved needle shaft rotates in the sewing machine body, and an avoidance groove for avoiding a feed tooth differential structure is formed in the needle frame body. Through setting up three needle frames originally into the needle frame body of integral type, can save the space that needle frame body took up, through seting up simultaneously and dodging the groove, can further avoid the differential structure of feed dog, make can not appear interfering between needle frame body and the differential feed dog structure, make in the three needle sewing machine of oblique can use differential feed dog structure.
Description
Technical Field
The utility model relates to the field of sewing machines, in particular to a thread hooking structure of a sewing machine.
Background
In the sewing process, the cloth feeding teeth move forward, and the thread hooking device is a mechanism for hooking the thread loop formed by the sewing material after the thread loop is penetrated by the needle belt threading thread to form a stitch. The cloth feeding teeth are matched with the thread hooking device for sewing the cloth.
The invention patent with the publication number of CN109537181B discloses a feed dog inclination angle adjusting mechanism, which comprises a rack, a feed dog arranged at one end of the rack, a sliding block in sliding fit with the other end of the rack, and an eccentric shaft, wherein the eccentric shaft is provided with a first shaft part and a second shaft part which are eccentrically arranged, and the first shaft part is rotatably arranged in the sliding block in a penetrating way; the sewing machine also comprises an adjusting shaft rotatably arranged in the sewing machine shell, one end of the adjusting shaft is provided with a rotating operation part positioned outside the shell, and the other end of the adjusting shaft is connected with a second shaft part of the eccentric shaft through a transmission component; when the rotation operation part of the adjusting shaft is rotated, the adjusting shaft drives the second shaft part of the eccentric shaft to rotate through the transmission assembly.
The invention patent with publication number CN109537181B discloses a differential adjusting device and a sewing machine, wherein the differential adjusting device comprises a shell, a main shaft, a cloth feeding mechanism and a differential mechanism, and the differential adjusting device comprises: the cloth feeding mechanism comprises a cloth feeding shaft and a cloth feeding tooth frame, the cloth feeding shaft is connected with the main shaft in a driven manner, and the main shaft can drive the cloth feeding shaft to swing; the differential mechanism comprises a differential shaft, a differential tooth frame and a differential connecting rod, wherein the differential shaft is in driven connection with the main shaft, the main shaft can drive the differential shaft to swing, the differential shaft is provided with a differential plate at the end part close to the differential tooth frame, the differential plate is provided with an arc-shaped hole, a differential adjusting assembly is movably arranged in the arc-shaped hole, one end of the differential connecting rod is hinged to the differential adjusting assembly, and the other end of the differential connecting rod is hinged to the differential tooth frame.
The utility model patent with the bulletin number of CN201151805Y discloses a thread hooking structure of a three-needle three-chain sewing machine, which comprises a needle bar, a needle clamp, a needle, a presser foot, a needle plate, a feed dog, a left curved needle frame, a middle curved needle frame 8, a right curved needle frame, a curved needle shaft, a left curved needle, a middle curved needle and a right curved needle. The needle bending device is characterized in that a left curved needle, a middle curved needle and a right curved needle are designed and respectively fixed on a left curved needle frame, a middle curved needle frame 8 and a right curved needle frame which correspond to each other and then fixed on a curved needle shaft; when the needle bar is in work, after being fixedly connected with the needle clamp, the needle bar moves downwards in a straight line with the needle, meanwhile, the needle bar drives the upper thread to move downwards, and after passing through needle plate holes corresponding to the needle plates, the left bent needle, the middle bent needle and the right bent needle hook the upper thread to form a thread loop of a chain stitch.
In the three-needle three-chain sewing machine and the related-art inclined three-needle sewing machine, the feed dog is integrated as in the feed dog inclination angle adjusting mechanism, and for some relatively elastic cloth, the integrated feed dog cannot transport the cloth well, and at this time, the differential adjusting device and the differential feed dog structure in the sewing machine are required to transport the cloth. The differential feed dog cloth structure is directly moved into the inclined three-needle sewing machine, and can interfere with the thread hooking structure to influence the movement of three needle frames in the thread hooking structure.
Disclosure of utility model
In order to enable a differential feed cloth structure to be used in a three-needle sewing machine, the application provides a thread hooking structure of the sewing machine.
The thread hooking structure of the sewing machine provided by the application adopts the following technical scheme:
the utility model provides a sewing machine collude line structure, includes three curved needle and needle frame subassembly, the needle frame subassembly includes needle frame body and curved needle axle, be equipped with the first step face of three different incline direction on the needle frame body top surface, three first step face corresponds three curved needle respectively, and the one end of three curved needle is along the distribution direction of three pinhole on the oblique three needle faller can dismantle in proper order and be connected on corresponding first step face, curved needle axle wears to establish and can dismantle to be connected in needle frame body bottom, curved needle axle rotates in the sewing machine organism, offer the groove of dodging that is used for avoiding feed dog differential structure on the needle frame body.
Through adopting above-mentioned technical scheme, through setting up three needle frames originally into the needle frame body of integral type, can save the space that needle frame body occupy, through seting up simultaneously and dodging the groove, can further avoid the differential structure of feed dog, make can not appear interfering between needle frame body and the differential feed dog structure, make and can use differential feed dog structure in the three needle sewing machine to one side.
Preferably, the curved needle is provided with a connecting column, the connecting column is fixed on the needle frame body through a first bolt and a nut, a connecting hole matched with the connecting column is formed in the first step surface, three thread grooves in threaded connection with the first bolt are formed in the side surface of the needle frame body in a penetrating mode, the three thread grooves correspond to the three connecting holes respectively, the thread grooves are communicated with the corresponding connecting holes, a limiting hole for the first bolt to penetrate through is formed in the connecting column, and one end of the first bolt penetrates through the thread grooves and the limiting hole and then is in threaded connection with the nut.
Through adopting above-mentioned technical scheme, the curved needle can dismantle the change on needle frame body, when the part appears damaging, change the part that damages can, reduced the cost of maintenance.
Preferably, the upper side surface of the needle frame body is provided with three second step surfaces with different inclination directions, the three second step surfaces correspond to the three first step surfaces respectively, the second step surfaces are mutually perpendicular to the corresponding first step surfaces, three thread grooves are respectively formed in the three second step surfaces, and the axial direction of the thread grooves is perpendicular to the corresponding second step surfaces.
Through adopting above-mentioned technical scheme, the second step face can supply the nut butt, makes the nut butt completely on the second step face, increases the area of contact of nut and second step face, makes the locking of bolt and nut more firm.
Preferably, the through hole matched with the bent needle shaft is formed in the bottom end of the needle frame body, the deformation groove is formed in the side wall of the through hole in a penetrating mode of the needle frame body, the parts, right opposite to the needle frame body, located on two sides of the deformation groove are deformation parts, and the two deformation parts are mutually locked through the second bolt.
Through adopting above-mentioned technical scheme, wear to establish the tip of curved needle axle in first hole, then use the second bolt to lock two deformation portions together, through reducing the distance between two deformation portions, reduce the through-hole aperture, press from both sides tight curved needle axle, realize the detachable connection of needle frame body and curved needle axle.
The technical effects of the utility model are mainly as follows:
1. According to the needle frame, the three needle frames are integrally arranged, so that the space occupied by the needle frame body can be saved, and meanwhile, the differential structure of the feed teeth can be further avoided by arranging the avoiding grooves, so that interference between the needle frame body and the differential type feed teeth cloth structure can not occur, and the differential type feed teeth cloth structure can be used in an oblique three-needle sewing machine;
2. The curved needle can be detached and replaced on the needle frame body, and when a part is damaged, the damaged part is replaced, so that the maintenance cost is reduced;
3. The second step surface can be used for abutting the nut, so that the nut is completely abutted on the second step surface, the contact area between the nut and the second step surface is increased, and the bolt and the nut are locked more firmly.
Drawings
FIG. 1 is a schematic view of a thread hooking structure on a sewing machine according to an embodiment of the present application.
FIG. 2 is a schematic view showing the connection of a curved needle to a needle holder body according to an embodiment of the present application.
FIG. 3 is a schematic view of the structure of the needle holder body according to the embodiment of the application.
Reference numerals illustrate: 1. a curved needle; 11. a connecting column; 111. a limiting hole; 2. a needle holder assembly; 21. a needle holder body; 211. a first step surface; 212. a second step surface; 213. an avoidance groove; 214. a thread groove; 215. a connection hole; 216. a through hole; 217. a deformation groove; 218. a deformation section; 22. a curved needle shaft; 31. a first bolt; 32. a nut; 33. and a second bolt.
Detailed Description
The present application will be further described in detail below with reference to fig. 1-3, so that the technical solution of the present application can be more easily understood and mastered.
The embodiment of the application discloses a thread hooking structure of a sewing machine.
Referring to fig. 1-3, a thread hooking structure of a sewing machine of the present embodiment includes three loopers 1 and a needle frame assembly 2, the needle frame assembly 2 includes a needle frame body 21 and a looper shaft 22, three first step surfaces 211 with different inclined directions are provided on the top surface of the needle frame body 21, the three first step surfaces 211 correspond to the three loopers 1 respectively, one ends of the three loopers 1 are detachably connected to the corresponding first step surfaces 211 in sequence along the distribution direction of the three pinholes on the inclined three-needle plate, the looper shaft 22 is penetrated and detachably connected to the bottom end of the needle frame body 21, the looper shaft 22 rotates in the sewing machine body, and a avoiding groove 213 for avoiding a feed tooth differential structure is provided on the needle frame body 21.
Referring to fig. 1 to 3, by providing the needle frame body 21 in which the three needle frames are integrally formed, the space occupied by the needle frame body 21 can be saved, and by providing the avoiding groove 213, the differential structure of the feed dog can be further avoided, interference between the needle frame body 21 and the differential feed dog structure can be avoided, and the differential feed dog structure can be used in the three-needle sewing machine.
Referring to fig. 1 to 3, the upper side of the needle holder body 21 is provided with three second step surfaces 212 with different inclination directions, the three second step surfaces 212 respectively correspond to the three first step surfaces 211, the second step surfaces 212 are perpendicular to the corresponding first step surfaces 211, and the edges of the second step surfaces 212 and the edges of the ends, which are close to each other, of the corresponding first step surfaces 211 are in linear superposition.
Referring to fig. 1-3, a connecting post 11 is fixed at the bottom end of the curved needle 1, the connecting post 11 is fixed on the needle frame body 21 through a first bolt 31 and a nut 32, a connecting hole 215 matched with the connecting post 11 is vertically formed on a first step surface 211, a thread groove 214 in threaded connection with the first bolt 31 is formed on a second step surface 212 in a penetrating manner, the axial direction of the thread groove 214 is perpendicular to the corresponding second step surface 212, three thread grooves 214 respectively correspond to the three connecting holes 215, the thread groove 214 is communicated with the corresponding connecting hole 215, the diameter of the thread groove 214 is smaller than that of a communication hole 216, a limit hole 111 for the first bolt 31 to penetrate is formed on the connecting post 11, one end of the first bolt 31 is in the thread groove 214 in a threaded manner, and then the end of the first bolt 31 is finally in the nut 32 after the end of the first bolt 31 penetrates through the limit hole 111.
Referring to fig. 1-3, the curved needle 1 can be detached and replaced on the needle frame body 21, when the part is damaged, the damaged part is replaced, and the maintenance cost is reduced.
Referring to fig. 1-3, the second step surface 212 can be used for abutting the nut 32, so that the nut 32 is completely abutted against the second step surface 212, the contact area between the nut 32 and the second step surface 212 is increased, and the bolt and the nut 32 are locked more firmly.
Referring to fig. 1-3, a through hole 216 matching with the curved needle shaft 22 is provided at the bottom end of the needle frame body 21, a deformation groove 217 is provided on the side wall of the through hole 216 penetrating through the needle frame body 21, the parts of the needle frame body 21 opposite to and located at two sides of the deformation groove 217 are deformation parts 218, the two deformation parts 218 are mutually locked by the second bolt 33, and one end of the second bolt 33 passes through one deformation part 218 and is connected with the other deformation part 218 by screw thread.
Referring to fig. 1 to 3, the end of the looper shaft 22 is inserted into the first hole, and then the two deformation parts 218 are locked together using the second bolt 33, and the looper shaft 22 is clamped by reducing the distance between the two deformation parts 218 and the aperture of the through hole 216, so that the detachable connection of the needle holder body 21 and the looper shaft 22 is achieved.
Of course, the above is only a typical example of the application, and other embodiments of the application are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the application claimed.
Claims (4)
1. The utility model provides a thread hooking structure of sewing machine, includes three curved needle (1) and needle frame subassembly (2), its characterized in that: needle frame subassembly (2) are including needle frame body (21) and looper needle axle (22), be equipped with three different inclination's first step face (211) on needle frame body (21) top surface, three first step face (211) correspond three looper needle (1) respectively, and the one end of three looper needle (1) is along the distribution direction of three pinhole on the inclined three needle faller detachable connection in proper order on corresponding first step face (211), looper needle axle (22) wear to establish and can dismantle the connection in needle frame body (21) bottom, looper needle axle (22) rotate in the sewing machine organism, set up on needle frame body (21) and be used for avoiding feed differential structure dodge groove (213).
2. The thread hooking structure of a sewing machine of claim 1, wherein: be equipped with spliced pole (11) on curved needle (1), spliced pole (11) are fixed on needle frame body (21) through first bolt (31) and nut (32), set up connecting hole (215) with spliced pole (11) matching on first step face (211), three thread groove (214) with first bolt (31) threaded connection have been run through on needle frame body (21) side, three thread groove (214) correspond three connecting hole (215) respectively, thread groove (214) communicate corresponding connecting hole (215), set up spacing hole (111) that supply first bolt (31) to pass on spliced pole (11), threaded connection is on nut (32) after thread groove (214) and spacing hole (111) are passed to one end of first bolt (31).
3. The thread hooking structure of a sewing machine of claim 2, wherein: the needle frame is characterized in that three second step surfaces (212) with different inclination directions are arranged on the upper side surface of the needle frame body (21), the three second step surfaces (212) respectively correspond to the three first step surfaces (211), the second step surfaces (212) are perpendicular to the corresponding first step surfaces (211), three thread grooves (214) are respectively formed in the three second step surfaces (212), and the axial direction of the thread grooves (214) is perpendicular to the corresponding second step surfaces (212).
4. The thread hooking structure of a sewing machine of claim 1, wherein: the needle frame is characterized in that a through hole (216) matched with the bent needle shaft (22) is formed in the bottom end of the needle frame body (21), a deformation groove (217) is formed in the side wall of the through hole (216) in a penetrating mode, the needle frame body (21) is opposite to the deformation groove (217), deformation parts (218) are arranged on the two sides of the deformation groove (217), and the two deformation parts (218) are mutually locked through a second bolt (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322544208.7U CN220846572U (en) | 2023-09-18 | 2023-09-18 | Thread hooking structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322544208.7U CN220846572U (en) | 2023-09-18 | 2023-09-18 | Thread hooking structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220846572U true CN220846572U (en) | 2024-04-26 |
Family
ID=90780912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322544208.7U Active CN220846572U (en) | 2023-09-18 | 2023-09-18 | Thread hooking structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220846572U (en) |
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2023
- 2023-09-18 CN CN202322544208.7U patent/CN220846572U/en active Active
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