CN211112580U

CN211112580U - Band tightness adjusting mechanism of sewing machine

Info

Publication number: CN211112580U
Application number: CN201921933951.9U
Authority: CN
Inventors: 曹向宇
Original assignee: Jianshan Dalian Co ltd
Current assignee: Jianshan Dalian Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-28
Anticipated expiration: 2029-11-11

Abstract

The utility model belongs to a strip tightness adjusting mechanism of a sewing machine, which comprises a sewing machine platen and is characterized in that a support rod base is fixed on the sewing machine platen by a second screw, a GF120 tape feeder is fixed on the support rod base, the right end of a driving shaft movably passes through a hole arranged on a belt feeder shell panel and is fixedly connected with a servo motor output shaft arranged in a shell for transmission; the left side of the control rod is arranged above the strip, and the right end of the control rod passes through the chute to be in contact with or disconnected from a trigger switch arranged in the shell; the strip penetrates between the driven roller and the driving roller, and a first guide frame is fixed on the connecting plate through a first screw. The utility model discloses a sewing clothes's strip is mechanized, and the elasticity in automatic control strip has improved production efficiency, has ensured the quality of clothing.

Description

Band tightness adjusting mechanism of sewing machine

Technical Field

The utility model belongs to sewing machine's adjustment mechanism, in particular to sewing machine's strip elasticity adjustment mechanism.

Background

In the manufacture of the western-style clothes, a band needs to be sewn on a garment piece, and in the past, the band is firstly cut off from a band plate and is sewn on the garment piece by a sewing machine; the sewing machine can also be cut off after being put down from the belt reel for sewing, the process is complicated, and the processing efficiency is low; especially for the oblique yarn direction strips, the strips are easy to stretch and lengthen in sewing and contract after sewing; causing shrinkage of the garment pieces and affecting the quality of the garment.

Disclosure of Invention

The invention aims to overcome the technical defects and provides a strap tightness adjusting mechanism of a sewing machine, which is characterized in that a strap feeding machine is arranged on a table top of the sewing machine, and the tightness of a strap is automatically controlled by the strap feeding machine.

The utility model provides a technical problem, the technical scheme who adopts is: a strap tightness adjusting mechanism of a sewing machine comprises a sewing machine body, a sewing machine head, a tooth frame, a hook knife bracket, a hook knife push rod, a second spring, a hook knife blade and a second elastic element, wherein the sewing machine body is arranged on a sewing machine table; the sewing machine is characterized in that a support rod base is fixed on a sewing machine table plate through a second screw, a support rod is fixed on the support rod base, and a shell of a GF120 belt feeder produced by PFGASUS is fixed at the upper end of the support rod; the GF120 tape feeder comprises a guide frame III fixed on the left side of a tape feeder shell panel of a shell, a pull rod II fixed in the middle of the guide frame III, a pull rod I fixed on the lower right corner of the tape feeder shell panel and the guide frame III, and a spring I arranged between the pull rod I and the pull rod II; a driving shaft is movably arranged in a hole in the middle of a belt conveyor shell panel, the right end of the driving shaft movably penetrates through a hole arranged on the belt conveyor shell panel and is fixedly connected with an output shaft of a servo motor arranged in a shell for transmission; the other end of the driving shaft is fixed with a driving roller; a guide frame IV and an arc-shaped chute are fixed on the right side of the belt conveyor shell panel, and a control rod is movably arranged in the chute; the left side of the control rod is arranged above the strip, and the right end of the control rod passes through the chute to be in contact with or disconnected from a trigger switch arranged in the shell; a driven roller is arranged on a guide frame III above the driving roller and is contacted with the driving roller; the left ends of the third guide frame and the fourth guide frame are provided with guard plates, a strip support mounting seat is fixed at the back of the belt feeder shell by a third screw, a strip support is fixed on the strip support, a strip belt disc is arranged at the end of the strip support, and a strip belt is wound on the strip belt disc; the strip is penetrated between the driven roller and the driving roller, and the strip enters the back of the sewing machine head after coming out and is penetrated on a second guide frame fixed in a strip-shaped hole with adjustable height by a bolt; the strip comes out of the second guide frame and then enters the upper surface of the dental articulator; the upper surface of the tooth frame is provided with a sewing needle plate, the upper surface of the sewing needle plate is provided with a connecting plate, and a first guide frame is fixed on the connecting plate by a first screw.

The first guide frame is provided with four first guide ports, the lower end of the first guide port is provided with a vertical guide hole, and the rear end of the guide hole is provided with an installation plate; the mounting plate is fixed on the connecting plate by a first screw.

The second guide frame body is composed of two right angles, two second guide openings are formed in the upper portion of the second guide frame body, and a vertical strip-shaped hole capable of adjusting the height of the second guide opening is formed in the center of the lower portion of the second guide frame body.

The strip firstly passes through the second guide opening on the second guide frame after coming down from the fourth guide frame, then passes through the first guide opening I on the first guide frame, the second guide opening I on the second guide opening and the third guide opening I on the first guide frame, and then passes through the vertical guide hole.

The beneficial effects of the utility model are that, this utility model realize sewing clothes's strip mechanization, the elasticity in automatic control strip has improved production efficiency, has ensured the quality of clothing.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

FIG. 1 is a three-dimensional view of a strap tightness adjustment mechanism of a sewing machine

FIG. 2 is an enlarged view of FIG. 1 at point I

FIG. 3 is an enlarged view of a portion of FIG. 1 at II;

FIG. 4 is a sectional view A-A of FIG. 2;

FIG. 5 is a front view of the second guide frame of FIG. 1;

FIG. 6 is a side view of FIG. 5;

FIG. 7 is a front view of a portion of the guide frame of FIG. 1;

fig. 8 is a front view of the garment piece of fig. 1 after sewing.

In the figure: 1-a dental framework; 1-1-sewing needle plate; 2, a first guide frame; 2-1-a first guide opening; 2-2-a pilot hole; 2-3-mounting a plate; 3-screw one; 4-a piece of clothing; 5-connecting plates; 6-suture; 7-sewing machine table; 8, a second guide frame; 8-1-a second guide port; 8-2-bar shaped holes; 9-sewing machine body; 9-1-sewing machine head; 10-a tape reel; 11-a strip; 12-a strip support; 13-GF120 belt feeder; 13-1-guide frame III; 13-2-spring one; 13-3-a first pull rod; 13-4-driving shaft; 13-5-chute; 13-6-control lever; 13-7-guide frame four; 13-8-drive roll; 13-9-a second pull rod; 13-10-belt feeder housing panel; 13-11-trigger switch; 13-12-driven rolls; 13-13-guard plate; 13-14-wire; 13-15-shell; 14-a support bar; 15-screw II; 16-a strut base; 17-hooking a knife; 17-1-hook knife push rod; 17-2-hook knife edge; 17-3, a second spring; 17-4-hook knife support; 18-a servo motor; 19-strap mount; 20-screw three.

Detailed Description

In the embodiment, referring to the attached drawings, the strap tightness adjusting mechanism of the sewing machine comprises a sewing machine table 7, a sewing machine body 9 is arranged on the sewing machine table 7, a sewing machine head 9-1 is arranged at the left end of the sewing machine body 9, a tooth frame 1 is arranged in front of the sewing machine body, a hook knife bracket 17-4 is arranged above the tooth frame 1, a hook knife push rod 17-1 of a hook knife 17 is arranged on the hook knife bracket 17-4, a second spring 17-3 is arranged on the hook knife push rod 17-1, and a hook knife blade 17-2 is arranged at the left end of the hook knife push rod 17-1; the sewing machine is characterized in that a support rod base 16 is fixed on a sewing machine table 7 by a second screw 15, a support rod 14 is fixed on the support rod base 16, and a shell 13-15 of a GF120 belt feeder 13 produced by PFGASUS is fixed at the upper end of the support rod 14; the GF120 tape feeder 13 (see attached figures 1 and 2) comprises a guide frame III 13-1 fixed on the left side of a tape feeder shell panel 13-10 of a shell 13-15, a pull rod II 13-9 fixed in the middle of the guide frame III 13-1, a pull rod I13-3 fixed on the tape feeder shell panel 13-10 and the guide frame III 13-1 on the lower right corner, and a spring I13-2 arranged between the pull rod I13-3 and the pull rod II 13-9; a driving shaft 13-4 is movably arranged in a hole in the middle of the belt conveyor shell panel 13-10, the right end of the driving shaft 13-4 movably penetrates through the hole arranged on the belt conveyor shell panel 13-10 and is fixedly connected with an output shaft of a servo motor 18 arranged in the shell 13-15 for transmission; the other end of the driving shaft 13-4 is fixed with a driving roller 13-8; a guide frame IV 13-7 and an arc chute 13-5 are fixed on the right side of a shell panel 13-10 of the belt feeder, and a control rod 13-6 is movably arranged in the chute 13-5; the left side of the control rod 13-6 is arranged above the strip 11, and the right end of the control rod passes through the chute 13-5 to be in contact with or disconnected from a trigger switch 13-11 arranged in the shell 13-15; a driven roller 13-12 is arranged on a third guide frame 13-1 above the driving roller 13-8 and is contacted with the driving roller 13-8; the left ends of the third guide frame 13-1 and the fourth guide frame 13-7 are provided with a guard plate 13-13, a strip bracket mounting seat 19 is fixed behind a belt feeding machine shell 13-15 by a third screw 20, a strip bracket 12 is fixed on the strip bracket mounting seat, the end of the strip bracket 12 is provided with a strip disc 10, and a strip 11 is wound on the strip disc 10; the strip 11 penetrates between a driven roller 13-12 and a driving roller 13-8, and then enters the back of a sewing machine head 9-1 to penetrate on a second guide frame 8 fixed in a strip-shaped hole 8-2 with adjustable height by using a bolt; the strip 11 comes out of the second guide frame 8 and then enters the dental articulator 1; a sewing needle plate 1-1 is arranged on the tooth frame 1, a connecting plate 5 is arranged on the sewing needle plate 1-1, and a guide frame I2 is fixed on the connecting plate 5 by a screw I3.

The guide frame I2 (shown in attached figures 3 and 7) is provided with four guide ports I2-1, the lower end of the guide frame I is provided with a vertical guide hole 2-2, and the rear end of the guide hole 2-2 is provided with an installation plate 2-3; the mounting plate 2-3 is fixed on the connecting plate 5 by a screw I3.

The second guide frame 8 (see attached figures 5 and 6), the body of the second guide frame 8 is composed of two right angles, the upper part of the second guide frame is provided with two second guide openings 8-1, and the center of the lower part of the second guide frame is provided with a vertical strip-shaped hole 8-2 capable of adjusting the height of the second guide opening 8-1.

The strip 11 goes down from the fourth guide frame 13-7, then passes through the second guide opening 8-1 on the second guide frame 8, then passes through the first guide opening 2-1 on the first guide frame 2, passes through the third guide opening 2-1 on the second guide opening 2-1, and then passes through the vertical guide hole 2-2.

The trigger switch 13-11 for controlling the servo motor 18 is communicated with the power supply by a lead 13-14, and the trigger switch 13-11 is communicated with the servo motor 18 by a lead.

The design principle and the operation method of the utility model are as follows: firstly, threading a strip 11 according to the states shown in the attached figures 1, 2 and 3, pulling the end of the strip 11 down to a clothing sheet 4 on a needle plate 1-1 of a sewing machine, pressing a presser foot of the sewing machine on the strip 11 and the clothing sheet 4, loosening the strip 11 until the strip 11 cannot be in contact with a control rod 13-6, then starting to sew the strip 11 and the clothing sheet 4 simultaneously, keeping the strip 11 in a loosening state all the time under the driving of a driving roller 13-8 and a driven roller 13-12, ensuring that the length of the strip 11 is enough, lifting the control rod 13-6 by the strip 11 once the length of the strip 11 is not tightened, enabling the right end of the control rod 13-6 to be in contact with a trigger switch 13-11 to start a servo motor 18 to rotate, pulling the strip 11 out from the two rollers under the driving of the driving roller 13-8 to keep in a loosening state, and continuously sewing out a sewing thread 6, the strips 11 and the garment panel 4 are sewn together. After the length is enough for sewing, the thread is cut off by the hook knife push rod 17-1 and the hook knife blade 17-2, and the hook knife push rod 17-1 returns to the original position under the action of the second spring 17-3 after the thread is cut off, and then the thread is cut off next time.

The invention greatly improves the automation level, has high efficiency and good clothing quality.

Claims

1. A strap tightness adjusting mechanism of a sewing machine comprises a sewing machine table (7), a sewing machine body (9) is arranged on the sewing machine table (7), a sewing machine head (9-1) is arranged at the left end of the sewing machine body (9), a tooth frame (1) is arranged in front of the sewing machine body, a hook knife bracket (17-4) is arranged above the tooth frame (1), a hook knife push rod (17-1) of a hook knife (17) is arranged on the hook knife bracket (17-4), a second spring (17-3) is arranged on the hook knife push rod (17-1), and a hook knife edge (17-2) is arranged at the left end of the hook knife push rod (17-1); the sewing machine is characterized in that a support rod base (16) is fixed on a sewing machine table plate (7) by a second screw (15), a support rod (14) is fixed on the support rod base (16), and a shell (13-15) of a GF120 belt feeder (13) produced by PFGASUS is fixed at the upper end of the support rod (14); the GF120 tape feeder (13) comprises a third guide frame (13-1) fixed on the left side of a tape feeder shell panel (13-10) of a shell (13-15), a second pull rod (13-9) is fixed in the middle of the third guide frame (13-1), a first pull rod (13-3) is fixed on the shell panel (13-10) of the tape feeder and the third guide frame (13-1) at the lower right corner, and a first spring (13-2) is arranged between the first pull rod (13-3) and the second pull rod (13-9); a driving shaft (13-4) is movably arranged in a hole in the middle of a belt conveyor shell panel (13-10), the right end of the driving shaft (13-4) movably penetrates through the hole arranged on the belt conveyor shell panel (13-10) and is fixedly connected with an output shaft of a servo motor (18) arranged in a shell (13-15) for transmission; the other end of the driving shaft (13-4) is fixed with a driving roller (13-8); a guide frame IV (13-7) and an arc chute (13-5) are fixed on the right side of a shell panel (13-10) of the belt feeder, and a control rod (13-6) is movably arranged in the chute (13-5); the left side of the control rod (13-6) is arranged above the strip (11), and the right end of the control rod passes through the chute (13-5) to be in contact with or disconnected from a trigger switch (13-11) arranged in the shell (13-15); a driven roller (13-12) is arranged on a third guide frame (13-1) above the driving roller (13-8) and is contacted with the driving roller (13-8); a guard plate (13-13) is arranged at the left end of the third guide frame (13-1) and the fourth guide frame (13-7), a strip support mounting seat (19) is fixed at the back of the belt conveyor shell (13-15) by a third screw (20), a strip support (12) is fixed on the strip support, a strip disc (10) is arranged at the end of the strip support (12), and a strip (11) is wound on the strip disc (10); the strip (11) penetrates between the driven roller (13-12) and the driving roller (13-8) and then enters the back of the sewing machine head (9-1) to penetrate on a second guide frame (8) fixed in a strip-shaped hole (8-2) with adjustable height by using a bolt; the strip (11) comes out of the second guide frame (8) and then enters the dental articulator (1); a sewing needle plate (1-1) is arranged on the tooth frame (1), a connecting plate (5) is arranged on the sewing needle plate (1-1), and a guide frame I (2) is fixed on the connecting plate (5) through a screw I (3).

2. The strap tightness adjusting mechanism of the sewing machine according to claim 1, characterized in that the guide frame one (2) is provided with four guide ports one (2-1), the lower end thereof is provided with a vertical guide hole (2-2), and the rear end of the guide hole (2-2) is provided with a mounting plate (2-3); the mounting plate (2-3) is fixed on the connecting plate (5) by a screw I (3).

3. The tightness adjusting mechanism of the sewing machine strap according to claim 1, characterized in that the second guide frame (8) body is composed of two right angles, two second guide openings (8-1) are provided at the upper part, and a vertical strip-shaped hole (8-2) capable of adjusting the height of the second guide opening (8-1) is provided at the center of the lower part.

4. The tightness adjusting mechanism of a sewing machine strap according to claim 1, characterized in that the strap (11) is passed through a second guide opening (8-1) on a second guide frame (8) after going down from a fourth guide frame (13-7), and then passed through a first guide opening (2-1) and a second guide opening (2-1) on the first guide frame (2), and then passed through a vertical guide hole (2-2) after passing through a third guide opening (2-1).