CN212655963U

CN212655963U - Sewing machine for sewing chain seam residual thread

Info

Publication number: CN212655963U
Application number: CN202020654084.1U
Authority: CN
Inventors: 林圣智; 郑兆闵; 游仁亨
Original assignee: Kaulin Manufacturing Co Ltd
Current assignee: Kaulin Manufacturing Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2021-03-05
Anticipated expiration: 2030-04-26

Abstract

The utility model provides a sewing machine for sewing chain stitch residual thread, which comprises a machine body and a presser foot transmission structure, wherein the machine body comprises a base, a needle plate and a residual thread inlet formed at the front side of the needle plate are arranged on the base, and the needle plate is provided with a needle hole; the presser foot transmission structure comprises a base, a front-back moving mechanism, an up-down moving mechanism and a presser foot component; the front-back moving mechanism is arranged on the base and comprises a first actuator and a moving seat driven by the first actuator; the up-down moving mechanism comprises a second actuator arranged on the moving seat and a sliding component driven by the second actuator, and the presser foot component is connected with the sliding component and comprises a presser foot plate; wherein the presser foot moves the sewing cloth in a linear moving mode from the residual thread inlet to the needle hole. Therefore, the uncut chain seam residual thread can be reversely folded into the inner side of the sewing cloth in a non-deflection way for fixing.

Description

Sewing machine for sewing chain seam residual thread

Technical Field

The utility model relates to a sewing machine technique especially relates to a sewing machine that is used for sewing chain seam stub.

Background

The sewing machine is classified into a Lock sewing (Lock sewing) and a Chain sewing (Chain sewing) in which a sewing portion of a cloth is fed in a sewing direction of an upper surface of a needle plate, a loop of a needle thread is formed under the needle plate by at least one needle holding the needle thread and moving up and down, the loop of the needle thread is captured before a hook performing an advancing and retreating motion in a direction substantially orthogonal to a path of the needle, and the captured loop of the needle thread is looped (looping) with other threads by the hook held by the hook, thereby forming a stitch of the Chain sewing at the sewing portion of the cloth.

The chain seam is mainly applied to decorative sewing of underwear, lappets, sleeves and the like, in order to avoid the loosening of the sewing thread, when the chain seam is sewn on the upper surface and the lower surface of sewing cloth, the length of the chain seam is far longer than that of the sewing cloth, the sewing cloth is exposed outside to form chain seam residual threads, then the chain seam residual threads are cut one by one through a pair of scissors manually, a proper length is reserved for reverse folding, and finally the chain seam residual threads which are reversely folded are sewn and fixed through a lock seam sewing machine.

However, the existing method for processing the chain seam residual thread needs a large amount of manpower to operate, so that the labor cost cannot be effectively reduced; after each chain seam residual thread is subjected to secondary sewing processing, each chain seam residual thread is folded into the inner side of the sewing cloth in a deflection mode and is fixed, so that the decorative effect of the chain seam residual thread is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewing machine for sewing chain seam stub, it can let the chain seam stub that is not cuted to it is fixed that the mode is reversed to be rolled over the seam cloth inboard not to incline.

To achieve the above object, the present invention provides a sewing machine for sewing a chain stitch residual thread, comprising:

the machine body comprises a base, wherein the base is provided with a needle plate and a residual thread inlet which is arranged at an interval with the needle plate and is formed at the front side of the needle plate, and the needle plate is provided with a needle hole; and

the presser foot transmission structure is arranged on the base and comprises a base, a front-back moving mechanism, a vertical moving mechanism and a presser foot component, the front-back moving mechanism is arranged on the base and comprises a first actuator and a moving seat driven by the first actuator; the up-down moving mechanism comprises a second actuator arranged on the moving seat and a sliding component driven by the second actuator, the presser foot component is connected with the sliding component and comprises a presser foot plate;

wherein the presser foot plate moves a piece of cloth in a linear moving manner from the residual thread inlet to the needle hole.

The sewing machine for sewing chain stitch residual thread comprises a needle plate seat, a gas transmission structure, a fixed knife and a movable knife, wherein the needle plate seat is provided with the needle plate, the gas transmission structure is connected with the needle plate seat, the fixed knife is fixed on the needle plate seat, and the movable knife is arranged inside the gas transmission structure and is matched with the fixed knife for shearing.

In the sewing machine for sewing chain stitch residual thread, the presser foot transmission structure further includes a dragging component, and the dragging component is fixed on the movable base and moves along with the movable base.

In the sewing machine for sewing chain stitch residual thread, the dragging assembly includes a fixed arm and a dragging plate connected to the fixed arm, the fixed arm is fixed on the movable base, and the dragging plate is attached to the needle plate base.

In the sewing machine for sewing chain stitch residual thread, the presser foot transmission structure further includes a positioning member fixed to the fixed arm and formed above the drag plate, and the positioning member has a stopper plate at an end away from the fixed arm.

The front and rear moving mechanism further comprises a plurality of support frames and a plurality of guide rods, each support frame is fixed on one side edge of the base and arranged at intervals, each guide rod penetrates through each support frame and is formed on the upper side and the lower side of the first actuator, and one end of each guide rod is connected with the moving seat.

The sewing machine for sewing chain seam residual thread comprises a cylinder body, a movable seat, an end plate, a first actuator and a second actuator, wherein the cylinder body is fixed between the support frames, the cylinder body is connected with the telescopic rod in a penetrating mode, the movable seat is connected to one end of each guide rod, and the end plate is sleeved on one end of the telescopic rod and the other end, far away from the movable seat, of each guide rod.

In the sewing machine for sewing a chain stitch residual thread, the second actuator is provided with a guide rail, the sliding member is provided with a sliding groove, and the sliding member can move up and down relative to the second actuator by the mutual embedding of the guide rail and the sliding groove.

In the sewing machine for sewing chain stitch residual thread, the presser foot assembly further includes a presser foot arm, one end of the presser foot arm is fixed to the sliding component, and the other end of the presser foot arm is fixed to the presser foot plate.

The aforesaid is used for sewing chain to sew up sewing machine of stub thread, and wherein this organism still includes an upper arm, a detector and a stub thread shearing mechanism, and this stub thread shearing mechanism is including supplying a faller seat that this faller set up, and the top at this base is fixed to this upper arm, and this detector is fixed on this upper arm and is formed in this faller seat top department correspondingly.

The utility model discloses still have following efficiency, through mutually supporting of each support frame and each guide arm for remove the seat and can move the back-and-forth movement steadily. By means of the mutual matching of the guide rail and the sliding groove, the sliding component and the presser foot component can stably move up and down. By adopting the design of the passive air suction channel, the air suction device can not only save the installation cost of the air suction device, but also achieve the air suction effect of the air suction section in an air blowing mode, and is more economical and practical in the aspects of use efficiency and the like. By means of the arrangement of the dragging component, the presser foot component is assisted to stably move and carry the sewing cloth. Through the setting of locating component, can do the neat push of whole limit subsides to the front end edge of seam cloth, and then promote the degree of ease of operation.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

Drawings

FIG. 1 is a perspective view of the novel sewing machine for chain stitch residual thread sewing;

FIG. 2 is a schematic view of the novel presser foot transmission assembly;

FIG. 3 is a schematic view of another combination of the view angles of the novel presser foot transmission structure;

FIG. 4 is a schematic view of the combination of the presser foot transmission structure and the residual thread shearing device;

5-10 the present invention relates to the use state diagrams (one) - (six) of the sewing machine for sewing chain stitch residual thread.

Wherein the reference numerals

10: body

11: base

111 needle plate

112, pinhole

12 upper arm

13 broken wire shearing device

131: seat board

132 gas transmission structure

133 residual thread inlet

134 air inlet pipe

135 exhaust pipe

136 fixed knife

137, movable knife

14 needle bar

20, presser foot transmission structure

21: base

22 fore-and-aft movement mechanism

221 first actuator

222: cylinder body

223 telescopic rod

224 moving seat

225 support frame

226 guide rod

227: end plate

23 vertical moving mechanism

231 second actuator

232: cylinder body

233 telescopic rod

234 sliding part

235 guide rail

236 guide groove

24 presser foot assembly

241 presser foot arm

242 foot pressing plate

25 drag assembly

251 fixed arm

252 drag plate

26 positioning member

261 stop board

30: detector

9: sewing cloth

91 chain stitch line

92 chain seam residual line

Detailed Description

The detailed description and technical contents of the present invention are described below with reference to the accompanying drawings, however, the attached drawings are provided for reference and illustration only and are not intended to limit the present invention.

Referring to fig. 1 to 4, the present invention provides a sewing machine for chain stitch residual thread, which mainly includes a machine body 10 and a presser foot transmission structure 20.

The machine body 10 mainly includes a base 11, an upper arm 12, a residual thread shearing device 13 and other related transmission devices, a needle plate 111 is disposed on the base 11, a needle hole 112 (as shown in fig. 4) is disposed at the center of the needle plate 111, the upper arm 12 is fixed above the base 11 and includes a needle bar 14 and other related mechanisms and elements, the residual thread shearing device 13 mainly includes a needle plate seat 131, an air transmission structure 132 connected to the lower portion of the needle plate seat 131, a fixed knife 136 fixed on the needle plate seat 131, and a movable knife 137 (as shown in fig. 1) disposed inside the air transmission structure 132 and cooperating with the fixed knife 136 for shearing.

The needle board 111 is arranged in the middle of the needle board seat 131, a residual thread inlet 133 is arranged at the position of the needle board seat 131 far away from the needle board 111, the residual thread inlet 133 is arranged at a distance from the needle board 111 and is formed at the front side of the needle board 111, and the residual thread inlet 133 and the needle hole 112 are on the same basic alignment line.

The presser foot transmission structure 20 is installed on the base 11 and mainly includes a base 21, a back-and-forth moving mechanism 22, an up-and-down moving mechanism 23 and a presser foot assembly 24, wherein the base 21 is fastened on the base 11 by screws or other fastening elements.

The forward-backward moving mechanism 22 is installed on the side of the base 21, and mainly includes a first actuator 221 and a moving seat 224 driven by the first actuator 221, the first actuator 221 of the present embodiment is a pneumatic cylinder, but not limited to this type, the first actuator 221 mainly includes a cylinder body 222 and an expansion rod 223, the expansion rod 223 is connected to the center of the cylinder body 222 in a penetrating manner, and the moving seat 224 is substantially L-shaped and is connected to one end of the expansion rod 223.

The forward-backward moving mechanism 22 of the present embodiment further includes two supporting frames 225, two guide rods 226 and an end plate 227, wherein the supporting frames 225 are respectively fixed at one side of the front end and the middle section of the base 21 and are disposed at intervals, the guide rods 226 penetrate through the supporting frames 225 and are formed at the upper and lower sides of the cylinder body 222, one end of each guide rod 226 is connected to the moving seat 224, and the end plate 227 is sleeved on the telescopic rod 223 and one end of each guide rod 226 far away from the moving seat 224.

The up-down moving mechanism 23 includes a second actuator 231 mounted on the moving base 224 and a sliding member 234 driven by the second actuator 231, the second actuator 231 has a guide rail 235, the sliding member 233 has a sliding groove 236, the sliding member 234 can move up and down relative to the second actuator 231 by the mutual engagement of the guide rail 235 and the sliding groove 236, and the second actuator 231 also includes a cylinder 232 and two telescopic rods 233. Wherein the moving direction of the moving seat 224 is perpendicular to the moving direction of the sliding member 234.

The presser foot assembly 24 is connected to the end of the sliding member 234 and mainly includes a presser foot arm 241 and a presser foot plate 242, one end of the presser foot arm 241 is fixed below the sliding member 234, and the other end of the presser foot arm 241 is fixedly locked to the presser foot plate 242.

Further, the presser foot transmission structure 20 further includes a dragging assembly 25 fixed at the bottom section of the moving seat 224 and moving along with the moving seat 224, the dragging assembly 25 mainly includes a fixed arm 251 and a dragging plate 252 connected to the fixed arm 25, and the dragging plate 252 is attached to the upper surface of the needle board seat 131.

Further, the presser foot driving mechanism 20 further includes a positioning member 26 fixed to the fixed arm 251 and formed above the dragging plate 252, and a stopping plate 261 is provided at an end of the positioning member 26 away from the fixed arm 251.

Referring to fig. 5 to 10, in operation, a sewing cloth 9 is placed on the needle board seat 131, the sewing cloth 9 has a chain stitch line 91 and a chain stitch residual line 92 extending from the chain stitch line 91 and protruding out of the sewing cloth 9, and the chain stitch residual line 92 is aligned with the residual line inlet 133; firstly, gas is conveyed to the gas conveying structure 132 through the gas inlet pipe 134, and after the gas flows through the gas conveying structure 132, a passive gas suction channel is formed inside the residual thread inlet 133, so that the chain stitch residual thread 92 is sucked from the residual thread inlet 133; the chain joint residual line 92 is sheared through the cooperation of the fixed knife 136 and the movable knife 137, and the sheared chain joint residual line 92 is discharged from the direction of the exhaust pipe 135; secondly, the dragging assembly 25 and the positioning member 26 are driven by the moving seat 224 to move towards the direction of the sewing cloth 9, the front side of the dragging plate 252 is inserted below the sewing cloth 9, and the stop plate 261 is pushed and abutted in a whole edge and alignment manner corresponding to the front end edge of the sewing cloth 9; then, the presser foot plate 242 of the presser foot assembly 24 moves downward and presses the sewing cloth 9, and a part of the uncut chain stitch remnant 92 and the sewing cloth 9 are clamped together by the presser foot plate 242 and the drag plate 252, and the sewing cloth 9 is transferred in a linear movement manner from the remnant thread inlet 133 to the needle hole 112.

Further, the present invention provides a sewing machine for sewing chain stitch residual thread, further comprising a detector 30, the detector 30 is fixed on the upper arm 12 and correspondingly formed above the needle plate seat 131, for inducing the operation of the air delivery structure 132 of the residual thread cutting device 13 when the sewing cloth 9 is placed on the needle plate seat 131, thereby sucking the chain stitch residual thread 92 from the residual thread inlet 133.

Naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.

Claims

1. A sewing machine for sewing chain stitch remnant thread, comprising:

2. The sewing machine of claim 1, further comprising a residual thread cutting device, the residual thread cutting device comprising a needle plate seat for the needle plate, an air transmission structure connected to the needle plate seat, a fixed knife fixed to the needle plate seat, and a movable knife disposed inside the air transmission structure and cooperating with the fixed knife to cut.

3. The sewing machine for sewing chain stitch remnant lines according to claim 2, wherein the presser foot drive structure further comprises a drag assembly fixed to the movable base and moving in accordance therewith.

4. The sewing machine of claim 3, wherein the drag assembly comprises a fixed arm and a drag plate connected to the fixed arm, the fixed arm is fixed to the movable base, and the drag plate is attached to the needle plate base.

5. The sewing machine of claim 4, wherein the presser foot drive structure further comprises a positioning member fixed to the fixed arm and formed above the drag plate, and the positioning member has a stopper plate at an end remote from the fixed arm.

6. The sewing machine of claim 1, wherein the forward and backward movement mechanism further comprises a plurality of supports and a plurality of guide rods, each support is fixed to one side of the base and spaced apart from the base, each guide rod penetrates the supports and is formed on the upper and lower sides of the first actuator, and one end of each guide rod is connected to the movable base.

7. The sewing machine of claim 6, wherein the forward and backward moving mechanism further comprises an end plate, the first actuator comprises a cylinder fixed between the supports and a telescopic rod passing through the cylinder, the movable base is connected to one end of each guide rod, and the end plate is sleeved on one end of the telescopic rod and the other end of each guide rod away from the movable base.

8. The sewing machine for sewing a chain stitch stub according to claim 1, wherein the second actuator is provided with a guide rail, and the slide member is provided with a slide groove, and the slide member is movable up and down relative to the second actuator by fitting the guide rail and the slide groove into each other.

9. The sewing machine of claim 1, wherein the presser foot assembly further comprises a presser foot arm, one end of the presser foot arm being fixed to the slide member, and the other end of the presser foot arm being fixed to the presser foot plate.

10. The sewing machine of claim 1, wherein the machine body further comprises an upper arm, a detector and a residual thread shearing device, the residual thread shearing device comprises a needle plate seat for the needle plate to be disposed, the upper arm is fixed above the base, and the detector is fixed on the upper arm and correspondingly formed above the needle plate seat.