CN215668469U - Slide and sewing machine - Google Patents

Abstract

The utility model relates to the technical field of sewing machine accessories, in particular to a pull cylinder and a sewing machine. The pull cylinder is used for manufacturing the edge covering strip and comprises a pull cylinder body, wherein a first horizontal channel, a second horizontal channel, a third horizontal channel, a first bending channel and a second bending channel which extend along the feeding direction are formed in the pull cylinder body. On the cross section perpendicular to the feeding direction, the first horizontal channel and the second horizontal channel are arranged up and down oppositely, the third horizontal channel is arranged between the first horizontal channel and the second horizontal channel, the two ends of the first bending channel are communicated with the same side ends of the first horizontal channel and the second horizontal channel respectively, and one end of the second horizontal channel, far away from the first bending channel, is communicated with one end of the third horizontal channel, far away from the first bending channel through the second bending channel. The pull cylinder can be used for directly manufacturing the edge covering strips with single-layer bent and covered light, manual sewing is avoided, production efficiency is improved, and the requirement of large-scale production is met.

Description

Slide and sewing machine

Technical Field

The utility model relates to the technical field of sewing machine accessories, in particular to a pull cylinder and a sewing machine.

Background

When making clothes, the deckle edges of the garment pieces are often wrapped by using the wrapping strips, so that the aesthetic degree of the clothes is increased. In the traditional process, the edge covering strip is usually folded and glazed up and down, but for decoration effect, the edge covering strip is often folded and glazed in a single layer and is combined with the adhesive strip to be placed on the edges of cuffs, neckline and the like of the garment, so that the details of the garment are more abundant. In the related art, because the traditional edge covering pull cylinder cannot directly manufacture the edge covering strip with single-layer bent and covered light, the technical process of combining the edge covering strip with the sticking strip for single-layer bent and covered light is complicated, the production efficiency is low, and the requirement of large-scale production cannot be met.

SUMMERY OF THE UTILITY MODEL

The application discloses slide and sewing machine uses this slide to realize directly making the banding strip that the individual layer was buckled and is wrapped the light, has avoided artifical manual making, has improved production efficiency.

In a first aspect, the present application discloses a pull cup for making an edge strip, the pull cup comprising:

the device comprises a pull cylinder body, wherein a first horizontal channel, a second horizontal channel, a third horizontal channel, a first bending channel and a second bending channel which extend along the feeding direction are formed in the pull cylinder body;

on the cross section perpendicular to the feeding direction, the first horizontal channel with the second horizontal channel sets up relatively from top to bottom, just the third horizontal channel is located between the first horizontal channel and the second horizontal channel, the both ends of first passageway of buckling respectively with the first horizontal channel the homonymy end intercommunication of second horizontal channel, the second horizontal channel is kept away from the one end of first passageway of buckling with the third horizontal channel is kept away from the one end of first passageway of buckling is passed through the second passageway of buckling communicates.

Further, the slide comprises a feed inlet and a discharge outlet, and the outer contour size of the cross section of the slide body perpendicular to the feeding direction is gradually reduced along the direction from the feed inlet to the discharge outlet.

Further, the slide body includes:

the pull cylinder body also comprises a first outer bending plate, and two ends of the first outer bending plate are respectively connected with the same side ends of the first outer flat plate and the second outer flat plate;

the slide body also comprises a first inner flat plate, a second inner flat plate and a first inner bent plate which are oppositely arranged up and down and are positioned between the first outer flat plate and the second outer flat plate,

the first inner bending plate and the first outer bending plate are oppositely arranged to form the first bending channel, two ends of the first inner bending plate are respectively connected with the same side ends of the first inner flat plate and the second inner flat plate, the first inner flat plate and the first outer flat plate are oppositely arranged at intervals to form the first horizontal channel, and the second inner flat plate and the second outer flat plate are oppositely arranged at intervals to form the second horizontal channel;

the slide body further comprises a second external bending plate, one end of the second external bending plate is connected with one end, far away from the first external bending plate, of the second external flat plate, the other end of the second external bending plate extends towards the direction close to the first external bending plate to form a first inward bending plate, the first inward bending plate and the second internal flat plate are oppositely arranged at intervals to form a third horizontal channel, one end, far away from the first internal bending plate, of the second internal flat plate and a gap between the second external bending plate form a second bending channel.

Further, in the feeding direction, the lengths of the first inner bent plate, the first inner flat plate and the second inner flat plate are respectively greater than the lengths of the first outer bent plate, the first outer flat plate and the second outer flat plate.

Furthermore, the second inner flat plate extends out of the discharge hole and is bent towards the first inner flat plate to form a support end.

Further, a hollow-out portion is arranged on the first inner flat plate and used for assisting the cloth to pass through.

Further, the pull cylinder body further comprises a guide piece, the guide piece is connected to the feeding hole, and the guide piece is used for guiding cloth to enter the pull cylinder body from the feeding hole.

Furthermore, the guiding part comprises a plurality of supporting ribs arranged side by side, the supporting ribs are arranged along the leading-in direction of the cloth, and the supporting ribs are connected end to end.

Furthermore, the pull cylinder also comprises a fixed plate and a connecting plate, the pull cylinder body is connected with the connecting plate, the fixed plate is connected with the connecting plate in a sliding manner, and the direction of the sliding connection of the fixed plate and the connecting plate is perpendicular to the feeding direction;

and/or the fixed plate is provided with a connecting groove extending along the feeding direction.

In a second aspect, the present application also discloses a sewing machine having the draw tube of the first aspect mounted thereon; or, the sewing machine is provided with the pull cylinder and the tape presser foot as the first aspect, and the tape presser foot is positioned at the discharge side of the pull cylinder.

Compared with the prior art, the utility model has the following beneficial effects:

the pull cylinder can be used for directly manufacturing the edge covering strip with single-layer bent light covering, manual sewing is avoided, and production efficiency is improved. The edge covering strip for the single-layer bent light covering is directly manufactured by arranging the pull cylinder body. Specifically, in the utility model, as the two ends of the first bending channel are respectively communicated with the same side ends of the first horizontal channel and the second horizontal channel, the cloth for manufacturing the edge covering strip can be bent and placed in the channel formed by the first horizontal channel and the second horizontal channel, and the upper end of the cloth in the first horizontal channel is not bent. Because the both ends of second passageway of buckling are linked together with the other end of second horizontal passage and the one end that first kink was kept away from to third horizontal passage respectively, just make the lower extreme of cloth can pass the second kink and then buckle and place in third horizontal passage to formed the lower floor of cloth and buckled the package light, the upper strata does not have the package strake of being buckled the package light. When the edge wrapping strip and the adhesive strip are combined for use, the pull cylinder can be directly matched with the adhesive strip presser foot for use. The utility model can directly manufacture the edge covering strip with one-side bent and coated light, and can be directly matched with the strip sticking presser foot for use, thereby avoiding the traditional manual sewing, improving the production efficiency and meeting the large-scale production requirement.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a slide in an embodiment of the present application;

FIG. 2 is a view of the discharge port of the pulling cylinder in the embodiment of the present application;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a rear view of a pull cup in an embodiment of the present application;

FIG. 5 is a schematic view of the edge banding and the strip of the present application in combination.

Reference numerals:

100-edge wrapping strip and 200-adhesive strip;

1-pulling a cylinder body;

11-a first horizontal channel, 111-a first outer flat plate, 112-a first inner flat plate, 112 a-a hollowed-out portion;

12-a second horizontal channel, 121-a second outer plate, 122-a second inner plate, 122 a-a support end;

13-third horizontal channel, 131-first flap-in;

14-first bending channel, 141-first outward bending flap, 142-first inward bending panel;

15-a second bending channel, 151-a second external bending plate;

16-guide, 161-support bar;

2-fixing plate, 21-connecting groove;

3-connecting plate, 31-strip groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present application will be further described with reference to the following embodiments and accompanying drawings.

The embodiment of the application discloses a pull cylinder, which is used for manufacturing an edge covering strip 100 and comprises a pull cylinder body 1, wherein a first horizontal channel 11, a second horizontal channel 12, a third horizontal channel 13, a first bending channel 14 and a second bending channel 15 which extend along the feeding direction are formed in the pull cylinder body 1;

on the cross section perpendicular to the feeding direction, first horizontal channel 11 and second horizontal channel 12 set up relatively from top to bottom, and third horizontal channel 13 locates between first horizontal channel 11 and second horizontal channel 12, and the both ends of first horizontal channel 14 communicate with the same side end of first horizontal channel 11, second horizontal channel 12 respectively, and the one end that first horizontal channel 14 was kept away from to second horizontal channel 12 communicates through second bent channel 15 with the one end that first bent channel 14 was kept away from to third horizontal channel 13.

The edge covering strip 100 capable of being directly manufactured with single-layer bent light covering can be achieved through the pull cylinder, manual sewing is avoided, and production efficiency is improved. In the embodiment of the application, the edge covering strip 100 for directly manufacturing the single-layer bent light covering is realized by arranging the slide body 1. Specifically, in the embodiment of the present application, since two ends of the first bending channel 14 are respectively communicated with the same side ends of the first horizontal channel 11 and the second horizontal channel 12, the fabric for manufacturing the edge strip 100 can be bent and placed in the channel formed by the three channels, and the upper end of the fabric in the first horizontal channel 11 is not bent. Because the both ends of second passageway 15 of buckling are linked together with the other end of second horizontal passage 12 and the one end that first kink was kept away from to third horizontal passage 13 respectively, just make the lower extreme of cloth can pass the second kink and then buckle and place in third horizontal passage 13 to formed the lower floor of cloth and buckled the package light, the upper strata does not have the package strake 100 of being buckled the package light. When the edge wrapping strip 100 and the adhesive strip 200 are combined for use, the pull cylinder can be directly matched with the adhesive strip presser foot for use. This application makes can directly make the banding strip 100 of unilateral bending package light, and can directly cooperate the use of welt presser foot, has avoided traditional manual making, has improved production efficiency, has satisfied the production demand of scale.

Referring to fig. 1 and 2, it can be seen that the slide of the present application includes a slide body 1, and a side view of the slide body 1 at the feed inlet can be seen from fig. 2, a first horizontal channel 11 and a second horizontal channel 12 of the slide body 1 are disposed opposite to each other up and down, the first horizontal channel 11 is on top, the second horizontal channel 12 is on bottom, and left ends of the first horizontal channel 11 and the second horizontal channel 12 are respectively communicated with two ends of a first bending channel 14, so as to form a C-shaped inner cavity, so that the cloth for manufacturing the edge banding strip 100 can be placed in the channel shape formed by enclosing the three, and the upper end of the cloth is placed in the first horizontal channel 11 without being bent. As can be seen from fig. 1 and 2, a third horizontal channel 13 is further disposed between the first horizontal channel 11 and the second horizontal channel 12, and two ends of the second bending channel 15 are respectively communicated with a right end of the third horizontal channel 13 and a right end of the second horizontal channel 12, so that the lower end of the fabric can enter the second bending channel 15 first and then enter the third horizontal channel 13, and the lower end of the fabric is bent, thereby forming an edge covering strip 100 with only a single layer being bent and covered with light.

In this application embodiment, in order to make the cloth get into the slide more easily, the slide includes feed inlet and discharge gate, and the cross-section outline size of slide body 1 in the direction of being perpendicular to the feeding diminishes gradually along the direction of feed inlet to discharge gate.

Referring to fig. 1, it can be seen that, in the direction from the feed inlet to the discharge outlet in fig. 1, the outer contour of the cross section of the slide body 1 becomes smaller and smaller, so that the arrangement structure makes the cloth more easily placed inside the slide body 1 at the feed inlet, and finally the edge strip 100 formed by the slide comes out from the discharge outlet.

In this application implementation, the slide body 1 includes the first outer flat plate 111 and the second outer flat plate 121 that relative set up from top to bottom, and the slide body 1 still includes first outer bending plate 141, and the both ends of first outer bending plate 141 are connected with the same side end of first outer flat plate 111, second outer flat plate 121 respectively.

The slide body 1 further includes a first inner plate 112, a second inner plate 122 and a first inner bending plate 142 disposed oppositely and located between the first outer plate 111 and the second outer plate 121.

The first inner bending plate 142 and the first outer bending plate 141 are disposed opposite to each other to form a first bending channel 14, and two ends of the first inner bending plate 142 are connected to the same side ends of the first inner flat plate 112 and the second inner flat plate 122, respectively, the first inner flat plate 112 and the first outer flat plate 111 are disposed opposite to each other at an interval to form a first horizontal channel 11, and the second inner flat plate 122 and the second outer flat plate 121 are disposed opposite to each other at an interval to form a second horizontal channel 12.

The slide body 1 further includes a second external bending plate 151, one end of the second external bending plate 151 is connected to one end of the second external flat plate 121 far away from the first external bending plate 141, the other end of the second external bending plate extends to a direction close to the first external bending plate 141 to form a first inward bending plate 131, the first inward bending plate 131 and the second internal flat plate 122 are arranged oppositely and at an interval to form a third horizontal channel 13, and a gap between one end of the second internal flat plate 122 far away from the first internal bending plate 142 and the second external bending plate 151 forms a second bending channel 15.

Referring specifically to fig. 2 and 3, it can be seen that in fig. 3, the first horizontal channel 11 is formed by the gap between the first outer flat plate 111 and the first inner flat plate 112, the first bending channel 14 is formed by the gap between the first outer bending plate 141 and the first inner bending plate 142, and the second horizontal channel 12 is formed by the gap between the second inner flat plate 122 and the second outer flat plate 121. In addition, the gap between the first inward-folded plate 131 and the second inward-folded plate 122, which is formed by extending the second outward-folded plate 151 to the left end, forms the third horizontal channel 13, and the gap between the right end of the second inward-folded plate 122 and the second outward-folded plate 151 forms the second bending channel 15. When the pull cylinder is used, the upper end of the cloth is placed on the first inner flat plate 112, then the cloth sequentially comes to the second bending channel 15 along the first inner flat plate 112, the first inner bending part and the second inner flat plate 122, and then the lower end of the cloth is turned over leftwards around the right end of the second inner flat plate 122, so that the edge wrapping strip 100 only with the lower end of the cloth being bent and wrapped with light is obtained. In addition, the first outer flat plate 111, the first outer bent plate 141 and the second outer bent plate 151 located at the outer side can provide a supporting function for the cloth in the pull cylinder, so that the cloth can be stably placed in the pull cylinder without slipping off.

Further, in the feeding direction, the lengths of the first inner bending plate 142, the first inner flat plate 112 and the second inner flat plate 122 are greater than the lengths of the first outer bending plate 141, the first outer flat plate 111 and the second outer flat plate 121, respectively. Referring to fig. 4, it can be seen that a left side of the slide body 1 protrudes from the back view, which is that the lengths of the first inward-bending plate 142, the first inner flat plate 112 and the second inner flat plate 122 are greater than the lengths of the first outward-bending plate 141, the first outer flat plate 111 and the second outer flat plate 121, so that the arrangement is aimed at providing a stress surface for manually pushing the cloth into the slide body 1 if the cloth is too thick or too large to cause the cloth to be fed well after the cloth is filled into the slide body 1.

In the embodiment of the present application, in order to prevent the upper and lower openings of the edge covering strip 100 from being too large, the second inner plate 122 extends out of the discharge hole and is bent toward the first inner plate 112 to form a supporting end 122 a. Referring to fig. 1 and 2 specifically, it can be seen that, in the direction of the material outlet, the second inner flat plate 122 extends out of the material outlet and is bent to be inclined upwards to form a support end 122a, so that the bent part of the lower layer of the fabric comes out of the material outlet and is overlapped on the support end 122a, the bent part of the lower layer of the fabric is more attached to the end of the upper layer which is not bent, the upper layer and the lower layer of the finally manufactured edge covering strip 100 are more attached, and the problem of poor sewing accuracy caused by the overlarge distance between the upper layer and the lower layer when the sewing machine performs sewing can be avoided.

Further, in order to facilitate feeding, in the embodiment of the present application, a hollow portion 112a is disposed on the first inner flat plate 112, and the hollow portion 112a is used for assisting the cloth to pass through. Specifically, referring to fig. 1, it can be seen that a hollowed-out area is formed on the first inner plate 112, the hollowed-out area is a hollowed-out portion 112a, when the cloth is placed in the pull cylinder body 1, the cloth can be inserted into the hollowed-out portion 112a by fingers, bamboo sticks or other auxiliary tools to stir the cloth, so as to achieve the purpose of assisting the cloth to pass through.

In the embodiment of the present application, in order to facilitate the entry of the cloth into the pulling cylinder body 1, the pulling cylinder body 1 further includes a guiding member 16, the guiding member 16 is connected to the feeding port, and the guiding member 16 is used for guiding the cloth from the feeding port into the pulling cylinder body 1. With continued reference to fig. 1, it can be seen that a guide 16 is provided at the feed opening, and that the cloth can be guided from the feed opening into the draw tube body 1 by means of the guide 16 when the draw tube is in use. The presence of this guide 16 avoids manual feeding of the cloth inside the pull cup body 1. It should be noted that the guide 16 in the embodiment of the present application may be connected to the pulling barrel body 1 by welding, or may be connected to the pulling barrel body 1 by bonding, which is not particularly limited herein.

Further, in order to prevent the cloth from swinging, the guide 16 includes a plurality of support ribs 161 arranged side by side, the plurality of support ribs 161 are arranged along the introduction direction of the cloth, and the support ribs 161 are connected end to end. Referring to fig. 1, in fig. 1, a row of support ribs 161 is disposed at an end of the guide 16, and when feeding, a cloth can be placed on the support ribs 161, and a certain gap is formed between the support ribs 161 arranged side by side, and the cloth can shuttle back and forth between the support ribs 161. When the cloth is placed on the support rib 161, the cloth is bound on the guide 16 by a certain binding force, and at the same time, the cloth is not completely bound, so that the swing of the cloth in the feeding process is avoided. When feeding, because the plurality of support ribs 161 are arranged along the guiding direction of the cloth, the cloth enters the feeding opening along the direction of the support ribs 161.

In the embodiment of the application, in order to facilitate the operation of the slide, the slide further comprises a fixed plate 2 and a connecting plate 3, the slide body 1 is connected with the connecting plate 3, the fixed plate 2 is slidably connected with the connecting plate 3, and the direction of the slidable connection of the fixed plate 2 and the connecting plate 3 is perpendicular to the feeding direction; and/or, the fixed plate 2 is provided with a connecting groove 21 extending along the feeding direction.

In order to fix the slide on the working table of the sewing machine, the slide is further provided with a fixing plate 2 and a connecting plate 3, please refer to fig. 1 and 2. Wherein, fixed plate 2 is the L shaped plate of buckling, and the part of 2 right sides bendings of fixed plate is connected with slide body 1, and concrete adoption can be connected by the welded mode, also can adopt the mode of bonding to connect.

In addition, in order to adjust the direction of the slide body 1, on one hand, the fixing plate 2 and the connecting plate 3 in the embodiment of the present application can be slidably connected, and the direction of the sliding connection is perpendicular to the feeding direction, so that the movement of the slide in the left-right direction in fig. 2 (i.e., perpendicular to the feeding direction) is realized. In a specific implementation manner of the sliding connection, micro slide rail mechanisms may be respectively disposed at the connection positions of the connection plate 3 and the fixing plate 2, and the sliding connection between the two is implemented by the sliding of the slide rails. In order to facilitate the realization, in the embodiment of the present application, a strip-shaped groove 31 perpendicular to the feeding direction is formed in the connecting plate 3, and then the connecting plate is fixed on the strip-shaped groove 31 by using bolts and screws, so that the bolts or screws are loosened when the connecting plate 3 is slid, and then the bolts or screws are tightened after sliding through the connecting plate 3.

On the other hand, in order to realize the sliding of the fixing plate 2 in the feeding direction so as to realize the adjustment of the position of the slide cylinder body 1, micro slide rails may be respectively arranged on the fixing plate 2 and the working table of the sewing machine. For the convenience of implementation, in the embodiment of the present application, a connecting groove 21 is formed on the fixing plate 2, and the extending direction of the connecting groove 21 is the same as the feeding direction, please refer to fig. 1. Can be with in the screw inlays spread groove 21 and then fix fixed plate 2 on table surface, when will adjusting the position of slide barrel body 1, can become flexible the screw of spread groove 21 department, slide fixed plate 2 after with the screw fixation again.

It should be noted that the above adjustments to the pulling body 1 in the feeding direction and the left-right direction in fig. 2 (i.e., perpendicular to the feeding direction) may be provided separately or simultaneously.

The application also discloses a sewing machine, wherein the pull cylinder is arranged on the sewing machine; or the sewing machine is provided with the pull cylinder and the tape presser foot, and the tape presser foot is arranged on the discharge side of the pull cylinder.

When only the single-layer bending and polishing edge covering strip 100 is manufactured, the fixing part 2 of the pull cylinder can be fixed on the table board of the sewing machine, then cloth is placed on the guide part 16 of the pull cylinder body 1 and guided to the feeding hole, then the cloth is discharged from the discharging hole of the pull cylinder body 1 and becomes the single-layer bending and polishing edge covering strip 100, then the discharged edge covering strip 100 covers the part to be covered with the edge and is directly sewn and covered with the edge through the sewing machine, and the function of manufacturing the single-side bending and polishing edge covering strip 100 and covering the edge is achieved.

When the edging strip 100 with single-layer cladding and polishing is matched with the sticking strip 200 for use, a sticking strip presser foot is arranged on a sewing machine, then a fixing part 2 of a pull cylinder is fixed on a table top of the sewing machine, the sticking strip presser foot is positioned at a discharge port of the pull cylinder, then cloth is placed on a guide piece 16 of a pull cylinder body 1 and is guided to a feed port, then the cloth is discharged from the discharge port of the pull cylinder body 1 to form a single-layer bending and polishing edging strip 100, the sticking strip 200 is placed on the sticking strip presser foot, then the sticking strip 200 discharged from the sticking strip presser foot is placed on the upper layer (the layer which is not bent and polished) of the edging strip 100, then a part to be edged is placed below the edging strip 100, the sewing machine is started, and particularly refer to figure 5, so that the function of combining the sticking strip 200 with the single-layer bending and polishing edging strip 100 is realized, the complicated manual operation is reduced, and the working efficiency is improved, the requirement of large-scale production is met.

The pull cylinder and the sewing machine disclosed by the embodiment of the utility model are described in detail, the principle and the implementation mode of the utility model are explained by applying specific examples, and the description of the embodiment is only used for helping understanding the pull cylinder and the sewing machine and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A slide for making an edging strip, characterized in that it comprises:

the device comprises a pull cylinder body, wherein a first horizontal channel, a second horizontal channel, a third horizontal channel, a first bending channel and a second bending channel which extend along the feeding direction are formed in the pull cylinder body;

on the cross section perpendicular to the feeding direction, the first horizontal channel with the second horizontal channel sets up relatively from top to bottom, just the third horizontal channel is located between the first horizontal channel and the second horizontal channel, the both ends of first passageway of buckling respectively with the first horizontal channel the homonymy end intercommunication of second horizontal channel, the second horizontal channel is kept away from the one end of first passageway of buckling with the third horizontal channel is kept away from the one end of first passageway of buckling is passed through the second passageway of buckling communicates.

2. The pulling cylinder according to claim 1, characterized in that the pulling cylinder comprises a feeding port and a discharging port, and the cross-sectional outer contour dimension of the pulling cylinder body perpendicular to the feeding direction is gradually reduced along the direction from the feeding port to the discharging port.

3. The pulling pot of claim 2, wherein the pulling pot body comprises:

the pull cylinder body also comprises a first outer bending plate, and two ends of the first outer bending plate are respectively connected with the same side ends of the first outer flat plate and the second outer flat plate;

the slide body also comprises a first inner flat plate, a second inner flat plate and a first inner bent plate which are oppositely arranged up and down and are positioned between the first outer flat plate and the second outer flat plate,

the first inner bending plate and the first outer bending plate are oppositely arranged to form the first bending channel, two ends of the first inner bending plate are respectively connected with the same side ends of the first inner flat plate and the second inner flat plate, the first inner flat plate and the first outer flat plate are oppositely arranged at intervals to form the first horizontal channel, and the second inner flat plate and the second outer flat plate are oppositely arranged at intervals to form the second horizontal channel;

the slide body further comprises a second external bending plate, one end of the second external bending plate is connected with one end, far away from the first external bending plate, of the second external flat plate, the other end of the second external bending plate extends towards the direction close to the first external bending plate to form a first inward bending plate, the first inward bending plate and the second internal flat plate are oppositely arranged at intervals to form a third horizontal channel, one end, far away from the first internal bending plate, of the second internal flat plate and a gap between the second external bending plate form a second bending channel.

4. A pull cup as set forth in claim 3 wherein the first inner bend panel, the first inner flat panel, and the second inner flat panel have lengths in the feed direction greater than the lengths of the first outer bend panel, the first outer flat panel, and the second outer flat panel, respectively.

5. The pulling cylinder according to claim 3, wherein the second inner flat plate extends out of the discharge port and is bent toward the first inner flat plate to form a support end.

6. The pull cup as claimed in claim 3, wherein a hollow-out portion is provided on the first inner flat plate, and the hollow-out portion is used for assisting the cloth to pass through.

7. The pulling cylinder according to claim 2, characterized in that the pulling cylinder body further comprises a guide piece connected at the feed opening for guiding the cloth material from the feed opening into the pulling cylinder body.

8. A pulling drum as claimed in claim 7, characterized in that the guiding part comprises a plurality of supporting ribs arranged side by side, which are arranged in the direction of introduction of the cloth and are connected end to end.

9. The pulling cylinder according to any one of claims 1 to 8, further comprising a fixing plate and a connecting plate, wherein the pulling cylinder body is connected with the connecting plate, the fixing plate is slidably connected with the connecting plate, and the direction of the sliding connection of the fixing plate and the connecting plate is perpendicular to the feeding direction;

and/or the fixed plate is provided with a connecting groove extending along the feeding direction.

10. A sewing machine, characterized in that a draw tube according to any one of claims 1 to 9 is mounted on the sewing machine; or, the sewing machine is provided with the pull cylinder and the strip presser foot according to any one of claims 1 to 9, and the strip presser foot is positioned at the discharge side of the pull cylinder.

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