CN217709894U

CN217709894U - Curved needle frame

Info

Publication number: CN217709894U
Application number: CN202221752436.2U
Authority: CN
Inventors: 曾祯
Original assignee: Hubei Qingsheng Precision Machinery Technology Co ltd
Current assignee: Hubei Qingsheng Precision Machinery Technology Co ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-11-01
Anticipated expiration: 2032-07-08

Abstract

The utility model discloses a curved needle frame, including first semi-circular solid fixed ring, be provided with down semi-circular solid fixed ring under first semi-circular solid fixed ring, first semi-circular solid fixed ring and the left one end symmetry that is close to of lower semi-circular solid fixed ring are provided with the latch segment, the top of latch segment is well versed in and is seted up threaded hole, first semi-circular solid fixed ring is provided with the balance staff with lower semi-circular solid fixed ring's relative one side inner chamber, spacing draw-in groove has been seted up to the top and the bottom symmetry of balance staff, first semi-circular solid fixed ring and lower semi-circular solid fixed ring's relative one side middle part symmetry fixedly connected with spacing fixture block. This looper frame, through the solid fixed ring swing joint of the last semicircle that sets up and the solid fixed ring swing joint of lower semicircle, the crank's of being convenient for dismantlement need not to pull down the balance staff and can accomplish dismantlement or installation, convenient operation, and the steadiness is high of cooperation latch segment, screw hole, spacing draw-in groove, spacing fixture block, rubber layer, reset spring, extrusion piece.

Description

Curved needle frame

Technical Field

The utility model relates to a sewing machine looper frame field, in particular to looper frame.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. And derives the artistic forms of hand-push embroidery, computer embroidery, etc. There are various types of sewing machines, and the stitches made by the chain type sewing machine are chain type stitches, which are commonly found on the lower hem of the upper garment, etc. The sewing principle of the chain type sewing machine is as follows: the upper thread passes through the thread hole of the needle, the needle is driven to reciprocate up and down to pass through or penetrate out of the cloth, a thread loop of the upper thread is formed when the needle moves upwards, and at the moment, the needle point of the curved needle is inserted into the thread loop to adjust the size of the thread to be required.

In chinese utility model patent application no: CN201820837261.2 discloses a sewing machine and looper thread hooking device of chain stitch sewing machine thereof, the device includes looper (6), looper crank (4), looper crank pendulum shaft (3) are connected with looper crank (4) and run through the lower extreme of looper crank (4), looper (6) are connected with looper crank (4), the quantity of looper (6) is two at least, looper (6) and looper crank (4) are connected through looper locking screw (8), still include looper spacer pin (9), be equipped with spacing pinhole (7) on looper crank (4), spacing groove (5) have been seted up to the lower extreme of looper (6), looper spacer pin (9) run through spacing pinhole (7) and spacing groove (5). The utility model discloses a guarantee that straight needle, looper collude the line time synchronization, straight needle, looper tighten up the bottom line position also synchronous, have reduced the debugging degree of difficulty, the stability of reinforcing when thick material in the sewing surface fabric. The device's looper crank need pull down the looper crank balance shaft when the installation when dismantling just can go on, and is comparatively loaded down with trivial details, and the steadiness is relatively poor simultaneously, and the device's looper crank passes through the bolt snap-on with the looper in addition, is not convenient for carry out the fine setting of height, and the practicality is relatively poor.

Therefore, there is a need for a curved needle rack to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a looper frame can effectively solve the problem among the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a curved needle frame comprises an upper semicircular fixing ring, a lower semicircular fixing ring is arranged under the upper semicircular fixing ring, locking blocks are symmetrically arranged at the left ends, close to one ends, of the upper semicircular fixing ring and the left side of the lower semicircular fixing ring, a threaded hole is formed in the center of the top of each locking block, a swing shaft is arranged in an inner cavity at one side, opposite to the upper semicircular fixing ring and the lower semicircular fixing ring, of each swing shaft, limiting clamping grooves are symmetrically formed in the top and the bottom of each swing shaft, limiting clamping blocks are symmetrically and fixedly connected to the middle parts of the opposite sides of the upper semicircular fixing ring and the lower semicircular fixing ring, grooves are symmetrically formed in the opposite sides of the two limiting clamping blocks, extrusion blocks are symmetrically inserted at the ends, close to one ends, of the inner cavities of the two grooves, a rubber layer is symmetrically arranged at the opposite sides of the two extrusion blocks, two both ends symmetry is provided with reset spring around the mutually opposite one side of extrusion piece, the upper end of the solid fixed ring of first semicircle is provided with the crank, the curved needle slot has been seted up to one side that the solid fixed ring of first semicircle was kept away from to the crank, the inner chamber of curved needle slot is inserted and is equipped with the curved needle, bilateral symmetry threaded connection has the locking bolt around the crank upper end, the inner chamber lower extreme of curved needle slot is provided with the tray, the top centre of tray is provided with the inserted block, spacing logical groove has been seted up on articulate upper end right side, the inner chamber of spacing logical groove is inserted and is equipped with spacing connecting block, articulate right side upper end is provided with first fixed block, articulate right side lower extreme is provided with the second fixed block, the relative one side rotation of second fixed block and first fixed block is connected with the lead screw, the upper end of lead screw is provided with the handle, the outside cover of lead screw is equipped with the thread piece.

Preferably, the two limiting clamping blocks are respectively inserted into the inner cavities of the two limiting clamping grooves, the side walls of the limiting clamping blocks are tightly attached to the inner walls of the limiting clamping grooves, and the right end of the opposite side of the upper semicircular fixing ring is movably connected with the right end of the opposite side of the lower semicircular fixing ring.

Preferably, the extrusion block is attached to the inner wall of the groove and is in sliding connection with the inner wall of the groove, and one end, away from the extrusion block, of the reset spring is fixedly connected with the inner wall of the groove.

Preferably, the bottom of the curved needle is provided with a slot matched with the insertion block, the slot is in insertion fit with the insertion block, the side wall of the lower end of the curved needle is attached to the inner cavity of the curved needle slot and is in sliding connection with the inner cavity of the curved needle slot, and one end, close to the locking bolt, of the two locking bolts is tightly abutted to the front side wall and the rear side wall of the lower end of the curved needle.

Preferably, the lead screw is in thread block threaded connection, and the upper end of lead screw extends to the top of first fixed block, lateral wall laminating and sliding connection around spacing connecting block and the spacing logical groove.

Preferably, the side wall of the support block is attached to the inner wall of the curved needle slot and is in sliding connection with the inner wall of the curved needle slot, and the right side of the support block is fixedly connected with the left side of the limiting connecting block.

Advantageous effects

Compared with the prior art, the utility model provides a looper frame possesses following beneficial effect:

1. this looper frame, through the solid fixed ring swing joint of the first semicircle that sets up and the solid fixed ring swing joint of lower semicircle, the crank's of being convenient for dismantlement is not needed to pull down the balance staff and can accomplish dismantlement or installation to the setting of cooperation latch segment, screw hole, spacing draw-in groove, spacing fixture block, rubber layer, reset spring, extrusion piece, convenient operation, the steadiness is high.

2. This looper frame, through the fluting of the looper slot that sets up, locking bolt, tray, inserted block, looper bottom, lead screw, handle, screw thread piece, spacing connecting block mutually support can make things convenient for the installation of looper and the fine setting of height, and the lead screw is adjusted, and steadiness and precision are high, easily holds.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the present invention after the balance staff is removed;

FIG. 3 is a schematic sectional view of the upper end of the crank of the present invention;

fig. 4 is the schematic structural diagram of the utility model with the spacing fixture block and the extrusion block detached.

In the figure: 1. an upper semicircular fixing ring; 2. a lower semicircular fixing ring; 3. a locking block; 4. a threaded hole; 5. a pendulum shaft; 6. a limiting clamping groove; 7. a crank; 8. bending a needle; 9. locking the bolt; 10. a limiting clamping block; 11. a curved needle slot; 12. a support block; 13. inserting a block; 14. a first fixed block; 15. a second fixed block; 16. a screw rod; 17. a handle; 18. a thread block; 19. a limiting connecting block; 20. a limiting through groove; 21. extruding the block; 22. a rubber layer; 23. a return spring; 24. and (4) a groove.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-4, a curved needle frame comprises an upper semicircular fixing ring 1, a lower semicircular fixing ring 2 is arranged under the upper semicircular fixing ring 1, a locking block 3 is symmetrically arranged at one end, close to the left side of the upper semicircular fixing ring 1 and the left side of the lower semicircular fixing ring 2, of the locking block 3, a threaded hole 4 is formed in the center of the top of the locking block 3 in a penetrating mode, a swing shaft 5 is arranged in an inner cavity on one side, opposite to the upper semicircular fixing ring 1 and the lower semicircular fixing ring 2, of the swing shaft 5, limiting clamping grooves 6 are symmetrically formed in the top and the bottom of the swing shaft 5, limiting clamping blocks 10 are symmetrically and fixedly connected to the middle of one side, opposite to the upper semicircular fixing ring 1 and the lower semicircular fixing ring 2, the two limiting clamping blocks 10 are respectively inserted into inner cavities of the two limiting clamping grooves 6, and the side walls of the limiting clamping blocks 10 are tightly attached to the inner walls of the limiting clamping grooves 6.

The right-hand member swing joint in relative one side of last semicircular fixed ring 1 and lower semicircular fixed ring 2, recess 24 has been seted up to two relative one side symmetries of spacing fixture block 10, the one end symmetry that is close to mutually of two recess 24 inner chambers is inserted and is equipped with extrusion block 21, the relative one side symmetry of two extrusion block 21 is provided with rubber layer 22, both ends symmetry is provided with reset spring 23 around two extrusion block 21 mutually opposite one side, extrusion block 21 and the inner wall laminating and the sliding connection of recess 24, reset spring 23 keeps away from the one end of extrusion block 21 and the inner wall fixed connection of recess 24, through the last semicircular fixed ring 1 and the 2 swing joint of lower semicircular fixed ring that set up, cooperation locking block 3, screw hole 4, spacing draw-in groove 6, spacing fixture block 10, rubber layer 22, reset spring 23, the setting of extrusion block 21 is convenient for the dismantlement of crank 7, need not to pull down pendulum shaft 5 and can accomplish dismantlement or installation, convenient operation, the steadiness is high, the upper end of first semicircular fixed ring 1 is provided with crank 7, crank 7 keeps away from one side of first semicircular fixed ring 1 and has seted up looper slot 11.

A curved needle 8 is inserted into an inner cavity of the curved needle slot 11, locking bolts 9 are symmetrically connected with the front side and the rear side of the upper end of the crank 7 through threads, a support block 12 is arranged at the lower end of the inner cavity of the curved needle slot 11, an insertion block 13 is arranged in the center of the top of the support block 12, a notch matched with the insertion block 13 is formed in the bottom of the curved needle 8, the notch is in insertion fit with the insertion block 13, the side wall of the lower end of the curved needle 8 is attached to and slidably connected with the inner cavity of the curved needle slot 11, one end, close to the two locking bolts 9, of each locking bolt tightly abuts against the front side wall and the rear side wall of the lower end of the curved needle 8, a limiting through groove 20 is formed in the right side of the upper end of the crank 7, a limiting connecting block 19 is inserted into the inner cavity of the limiting through groove 20, the side wall of the support block 12 is attached to and slidably connected with the inner wall of the curved needle slot 11, the right side of the support block 12 is fixedly connected with the left side of the limiting connecting block 19, the limiting connecting block 19 is attached to and slidably connected with the front side wall and rear side of the limiting through groove 20, a first fixing block 14 is provided with a first fixing block 14, a second fixing block 15 is arranged at the lower end of the right side of the crank 7, and a screw rod 16 is connected with a screw rod 18 through screw rod.

The upper end of lead screw 16 extends to the top of first fixed block 14, the upper end of lead screw 16 is provided with handle 17, the outside cover of lead screw 16 is equipped with screw block 18, through the curved needle slot 11 that sets up, locking bolt 9, tray 12, inserted block 13, the fluting of curved needle 8 bottom, lead screw 16, handle 17, screw block 18, spacing connecting block 19 mutually support and can make things convenient for the fine setting of installation and height of curved needle 8, the lead screw is adjusted, steadiness and precision are high, easy assurance.

It should be noted that, the utility model relates to a curved needle frame, when in use, the upper semicircular fixing ring 1 and the lower semicircular fixing ring 2 are movably connected, the matched locking block 3, the threaded hole 4, the limiting clamping groove 6, the limiting clamping block 10, the rubber layer 22, the reset spring 23 and the extrusion block 21 are arranged to facilitate the disassembly and the installation of the crank 7, concretely, when in installation, the lower semicircular fixing ring 2 is arranged at the bottom of the pendulum shaft 5, the upper semicircular fixing ring 1 is sleeved at the upper end of the pendulum shaft 5 and enables the two locking blocks 3 to be inosculated, the two limiting clamping blocks 10 are respectively inserted into the inner cavities of the two limiting clamping grooves 6, then the locking block 3 is locked by the adaptive bolt, further the upper semicircular fixing ring 1 and the lower semicircular fixing ring 2 clamp the pendulum shaft 5, the rubber layer 22 can tightly fit with the inner wall of the limiting clamping groove 6 to the friction force of the component, meanwhile, the extrusion block 21 can extrude the return spring 23, the return spring 23 generates reverse acting force, the stability is further improved, disassembly or assembly can be completed without disassembling the swing shaft 5, the operation is convenient, and the stability is high.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a looper frame, includes first semicircle solid fixed ring (1), its characterized in that: a lower semicircular fixing ring (2) is arranged under the upper semicircular fixing ring (1), locking blocks (3) are symmetrically arranged at the ends, close to the left sides, of the upper semicircular fixing ring (1) and the lower semicircular fixing ring (2), the locking blocks (3) are arranged at the left sides of the upper semicircular fixing ring and the lower semicircular fixing ring in a symmetrical mode, a threaded hole (4) is formed in the center of the top of each locking block (3), a swing shaft (5) is arranged in an inner cavity at one side, opposite to the upper semicircular fixing ring (1) and the lower semicircular fixing ring (2), limiting clamping grooves (6) are symmetrically formed in the top and the bottom of each swing shaft (5), a rubber layer (22) is symmetrically arranged at the middle part of one side, opposite to the upper semicircular fixing ring (1) and the lower semicircular fixing ring (2), two limiting clamping blocks (10) are symmetrically arranged at one side, opposite to the two clamping blocks (10), an extruding block (21) is symmetrically inserted at one end, a crank (7) is arranged at the upper end, a rubber layer (22) is symmetrically arranged at the opposite to one side of the two extruding blocks (21), return springs (23) are symmetrically arranged at the front end and back side of the other of the extruding block (21), a bent needle inserting slot (8) is arranged at the bent needle inserting slot of the bent needle fixing ring (7), and a bent needle slot (11), symmetrical threaded connection in both sides has locking bolt (9) around crank (7) upper end, the inner chamber lower extreme of looper slot (11) is provided with tray (12), the top centre of tray (12) is provided with inserted block (13), spacing logical groove (20) have been seted up on the upper end right side of crank (7), the inner chamber of spacing logical groove (20) is inserted and is equipped with limit connection piece (19), the right side upper end of crank (7) is provided with first fixed block (14), the right side lower extreme of crank (7) is provided with second fixed block (15), relative one side rotation of second fixed block (15) and first fixed block (14) is connected with lead screw (16), the upper end of lead screw (16) is provided with handle (17), the outside cover of lead screw (16) is equipped with thread piece (18).

2. The looper according to claim 1, wherein: the two limiting clamping blocks (10) are respectively inserted into the inner cavities of the two limiting clamping grooves (6), the side walls of the limiting clamping blocks (10) are tightly attached to the inner walls of the limiting clamping grooves (6), and the right end of the opposite side of the upper semicircular fixing ring (1) is movably connected with the right end of the opposite side of the lower semicircular fixing ring (2).

3. The looper according to claim 1, wherein: extrusion piece (21) and the inner wall laminating and sliding connection of recess (24), the one end that extrusion piece (21) were kept away from in reset spring (23) is connected with the inner wall fixed connection of recess (24).

4. The looper according to claim 1, wherein: the bottom of looper (8) is seted up with the fluting of inserted block (13) adaptation to this fluting is pegged graft with inserted block (13) and is cooperated, the lower extreme lateral wall of looper (8) and the inner chamber laminating and the sliding connection of looper slot (11), two the close to one end of locking bolt (9) closely contradicts with the front and back lateral wall of looper (8) lower extreme.

5. The looper according to claim 1, wherein: the lead screw (16) is in threaded connection with the thread block (18), the upper end of the lead screw (16) extends to the top of the first fixing block (14), and the front side wall and the rear side wall of the limiting through groove (20) are attached to and slidably connected with the limiting connecting block (19).

6. The looper according to claim 1, wherein: the side wall of the support block (12) is attached to the inner wall of the curved needle slot (11) and is in sliding connection with the inner wall of the curved needle slot, and the right side of the support block (12) is fixedly connected with the left side of the limiting connecting block (19).