CN114606661A - Pulling cylinder and overedger - Google Patents

Abstract

The invention discloses a pull cylinder and a overedger, wherein the pull cylinder is connected with a bending structure and a fixing structure through a distance adjusting structure, the bending structure comprises a bending main body with a curling channel and a sliding block arranged in the curling channel, the curling channel is provided with a first opening, a second opening and a third opening, the first opening faces a positioning part of the distance adjusting structure, the second opening and the third opening can be used for cut pieces to pass through, and the sliding block can move relative to the curling channel along the direction towards or away from the first opening so as to adjust the distance between the sliding block and the positioning part. The pull cylinder and the overedger provided by the invention can control the distance between the cutting piece and the cutter, adjust the bending width and position of the cutting piece and ensure that the path of an overedged stitch is smooth and stable, thereby improving the quality of an overedged finished product, improving the material utilization rate and saving the labor cost.

Description

Pulling cylinder and overedger

Technical Field

The invention relates to the technical field of auxiliary sewing tools, in particular to a pull cylinder and an overedger.

Background

The overedged stitch is a chain type stitch formed by mutually and circularly stringing and sleeving one or more stitches at the edge of a cut piece, is used as one of the overedged stitches, is commonly used for the positions of hems, cuffs and the like of knitted clothes, can overedge burrs, and has the function of decorating the edge of the cut piece. Specifically, in the process of manufacturing the scar needle, cut pieces are often folded along the edges and then reversely folded to form a double-layer folded three-layer cut piece structure, the three-layer cut pieces pass through a hemming machine along the folded edges, then the folded parts of the hemming are unfolded to form stitches in which a plurality of line segments are arranged at intervals, and the formed stitches are called the scar needle.

In the related technology, the manufacture of the scar needle is mostly controlled by an operator manually, the stitches of the scar needle are prone to deflection and untidiness, and cut pieces are prone to being cut by a cutter and damaged when the cut pieces pass through a overedger, so that the quality of finished products is affected, and material and manual waste is caused.

Disclosure of Invention

The embodiment of the invention discloses a pull cylinder and a overedger, which can control the distance between a cutting piece and a cutter, adjust the bending width and position of the cutting piece and ensure that the path of an overedged stitch is smooth and stable, thereby improving the quality of an overedged finished product, improving the material utilization rate and saving the labor cost.

In order to achieve the above object, in a first aspect, the present invention discloses a pulling barrel, comprising:

a securing structure having opposed first and second ends, the first end for securing to a overedger;

the distance adjusting structure is connected to the second end and provided with a positioning component; and

bending structure, bending structure is including bending main part and slider, bending the main part connect in the roll adjustment structure, bending the main part and having the turn-up passageway, the turn-up passageway has first opening, second opening and third opening, first opening orientation the roll adjustment structure the locating part sets up, the second opening the third opening sets up relatively, just the second opening the third opening is used for supplying the cut-parts to pass, slider slidable locates the turn-up passageway, the slider can be relative the turn-up passageway is along orientation or keeping away from the direction motion of first opening, in order to adjust the slider with distance between the locating part.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, a first sliding groove communicated with the curling passage is disposed on the bending main body, the first sliding groove extends along a length direction of the curling passage, a first connection hole communicated with the first sliding groove is disposed on the sliding block, and the pull cylinder further includes a first fastening member, and the first fastening member is disposed through the first sliding groove and the first connection hole to connect the sliding block and the bending main body.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the bending structure further includes a first adjusting member, the first adjusting member is disposed in the hemming channel along a height direction of the hemming channel, the first adjusting member is provided with a second sliding groove, the second sliding groove is communicated with the hemming channel and extends along a length direction of the hemming channel, and the sliding block is slidably connected to the second sliding groove.

As an alternative, in an embodiment of the first aspect of the present invention, the first adjusting member is movably disposed with respect to the bending main body along a height direction of the crimping passage.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the pull cylinder further includes a first connecting element, the first connecting element is located on the bending main body and the distance adjusting structure, and the first connecting element is connected to the bending main body and the distance adjusting structure.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the first connecting element includes a first connecting portion and a second connecting portion, the first connecting portion is rotatably connected to the second connecting portion, the first connecting portion is connected to the bending main body, the second connecting portion is connected to the distance adjustment structure, the first connecting portion is rotatable relative to the second connecting portion to drive the bending main body to rotate relative to the second connecting portion to abut against the second connecting portion, or the distance adjustment structure is provided with a first blocking piece, and the bending main body is rotatable relative to the distance adjustment structure to abut against the first blocking piece.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the distance adjusting structure includes a pressing block and a second connecting member, the pressing block is provided with the positioning component, one end of the second connecting member is connected to a side of the pressing block away from the positioning component, and the other end of the second connecting member is connected to the fixing structure.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the press block is provided with a mounting groove opening to the second connecting member, the second connecting member includes a first mounting portion and a first fixing portion connected to the first mounting portion, the first mounting portion at least partially extends into the mounting groove and is connected to the mounting groove, and the first fixing portion is connected to the fixing structure.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the first installation portion is movably connected to the installation groove, and the distance adjustment structure further includes a second adjusting member, where the second adjusting member is connected to the pressing block and the first installation portion to adjust a position where the first installation portion extends into the installation groove.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, a bottom surface of the first installation portion is provided with a protruding portion, the protruding portion is provided with a second connection hole, the distance adjustment structure further includes an installation component, the installation component is connected to a side of the pressing block away from the positioning component, the installation component is provided with a third connection hole communicated with the second connection hole, and the second adjustment piece is movably connected to the third connection hole and the second connection hole.

As an optional implementation manner, in an embodiment of the first aspect of the present invention, the second connecting piece further includes a transition portion, and the transition portion extends upward from a side of the first installation portion, which is away from the pressing block, to be connected to the first fixing portion, so that a distance from a plane where the first fixing portion is located to a bottom surface of the pressing block is greater than a distance from a plane where the first installation portion is located to the bottom surface of the pressing block.

As an alternative implementation, in an embodiment of the first aspect of the present invention, the fixing structure includes a third connecting member and a fourth connecting member connected to the third connecting member, the third connecting member is connected to the distance adjusting structure, and the fourth connecting member is configured to be connected to the overedger.

As an alternative, in an embodiment of the first aspect of the present invention, the fourth connecting element may be rotatably connected to the third connecting element so as to rotate relative to the third connecting element to be overlapped on the third connecting element, or the fourth connecting element may be slidably connected to the third connecting element.

As an alternative, in an embodiment of the first aspect of the present invention, when the fourth connecting element is rotatably connected to the third connecting element, the third connecting element is provided with a limiting element, and the limiting element is used for being connected to the fourth connecting element to limit the state and the position of the fourth connecting element stacked on the third connecting element.

As an alternative implementation manner, in an embodiment of the first aspect of the present invention, the fixing structure further includes an elastic member, one end of the elastic member is connected to the third connecting member, and the other end of the elastic member is connected to the limiting member, and the elastic member is configured to enable the limiting member to move relative to the third connecting member.

In a second aspect, the invention discloses a overedger comprising an overedger body, a presser foot and a pull cylinder as described in the first aspect, wherein the fixing structures of the presser foot and the pull cylinder are respectively connected to the overedger body.

Compared with the prior art, the invention has the beneficial effects that:

the pull cylinder and the overedger provided by the embodiment of the invention are connected to the bending structure and the fixing structure through the arrangement of the distance adjusting structure, the bending structure comprises a bending main body with a crimping channel and a sliding block arranged in the crimping channel, the crimping channel is provided with a first opening, a second opening and a third opening, the first opening faces to the positioning part of the distance adjusting structure, the second opening and the third opening can be used for a cutting piece to pass through, and the sliding block can move relative to the crimping channel along the direction towards or away from the first opening so as to adjust the distance between the sliding block and the positioning part. Therefore, when the slide tube is adopted for sewing, a cut piece after double-layer folding can be placed between the bending main body and the positioning component from the first opening, wherein the folded double-layer cut piece is positioned in the curling channel, the main body part of the cut piece extending along the direction departing from the bending part is positioned outside the bending main body, at the moment, the hems of the double-layer cut piece abut against the sliding block, and the edges of the double-layer cut piece and the bending part of the cut piece abut against the positioning component. After the cut pieces penetrate through the pull cylinder through the second opening and the third opening and are sewn, the cut pieces exceeding the positioning part are cut off by a cutter of a sewing machine, meanwhile, edge-locking overedged stitches are formed at the edges of the three cut pieces, and the double-layer cut pieces and the cut piece main body are unfolded along the bending part, so that the neatly-arranged scar needle stitches can be obtained.

Namely, the pull cylinder of the invention can limit the position of the cutting piece by the positioning component so as to control the distance between the cutting piece and the cutting knife, thereby avoiding the damage of the cutting piece caused by the cutting of the position of the scar needle by the cutting knife. Simultaneously, through the activity of slider with first opening restriction cut-parts to ensure that the route parallel and level of overseam stitch is stable, through the distance between adjustment slider and the positioning element, can also control the width that cut-parts were bent and the position of scar needle in addition. Therefore, the scheme of the invention can improve the quality of finished products, improve the utilization rate of materials and save labor cost.

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 structural diagram of a pulling drum disclosed in an embodiment of the present application;

fig. 2 is a schematic structural view of a bending body in the pulling cylinder shown in fig. 1;

FIG. 3 is a schematic view of a first adjusting member of the pulling cylinder shown in FIG. 1;

FIG. 4 is a schematic view of a first coupling member of the pull cup of FIG. 1;

fig. 5 (a) and (B) are a schematic structural view and a bottom view, respectively, of the pressure block in the pulling cylinder shown in fig. 1;

FIG. 6 is a schematic view of a second connection member in the pull cup shown in FIG. 1;

FIG. 7 is a schematic structural view of a mounting member in the pull cup shown in FIG. 1;

FIG. 8 is a schematic view of a fixing structure when the fourth connecting member is stacked on the third connecting member;

FIG. 9 is a schematic structural diagram of an overlock machine disclosed in an embodiment of the application.

Icon:

100. pulling the cylinder; 10. a bending structure; 11. bending the main body; 110. a crimping channel; 111. a first plate portion; 112. a bending part; 113. a second plate portion; 113a, a first chute; 114. a second fastener; 12. a slider; 121. a first groove; 13. a first fastener; 14. a first adjustment member; 141. a second chute; 142. a first adjustment aperture; 143. a raised portion; 20. a distance adjusting structure; 21. briquetting; 211. a positioning member; 212. a bump; 213. mounting grooves; 22. a second connecting member; 221. a first mounting portion; 2211. a projection; 2211a, a second connecting hole; 222. a first fixed part; 2221. a first baffle plate; 223. a transition section; 23. a second adjustment member; 24. a mounting member; 241. a third connection hole; 25. a fourth fastener; 30. a fixed structure; 31. a third connecting member; 310. a first bent portion; 311. a limiting member; 33. an elastic member; 32. a fourth connecting member; 320. a second bent portion; 321. a fixing hole; 322. a third groove; 40. a first connecting member; 41. a first connection portion; 42. a second connecting portion; 421. a second groove; 101. a presser foot; 102. an overedger body; 200. overedger.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to 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 invention 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.

Moreover, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific type and configuration may or may not be the same), 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 invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1 to 3, in a first aspect, the present invention provides a pull cylinder 100, which can be applied to a overedger to control the position of a cut piece relative to a cutting knife and the bending width and position of the cut piece, so as to ensure that the cut piece is intact and the overedged stitch path is smooth and stable. Specifically, the pull cup 100 includes a bending structure 10, a distance adjusting structure 20, and a fixing structure 30. The fixing structure 30 has a first end and a second end opposite to each other, the first end is used for fixing to the overedger, the second end is connected to the distance adjusting structure 20, and the distance adjusting structure 20 is provided with a positioning part 211. The bending structure 10 includes a bending main body 11 and a slider 12, the bending main body 11 is connected to the distance adjusting structure 20, the bending main body 11 has a curling passage 110, the curling passage 110 has a first opening, a second opening and a third opening, the first opening is disposed toward the positioning part 211 of the distance adjusting structure 20, the second opening and the third opening are disposed oppositely, and the second opening and the third opening are used for the cut pieces to pass through. The slider 12 is slidably disposed in the crimping passage 110, and the slider 12 is movable relative to the crimping passage 110 in a direction toward or away from the first opening to adjust a distance between the slider 12 and the positioning member 211.

The slide 100 provided by the present embodiment is connected to the bending structure 10 and the fixing structure 30 by providing the distance adjusting structure 20, the bending structure 10 includes a bending main body 11 having a curling passage 110 and a sliding block 12 disposed in the curling passage 110, and the curling passage 110 has a first opening, a second opening and a third opening, the first opening faces the positioning part 211 of the distance adjusting structure 20, the second opening and the third opening can be penetrated by the cut piece, and the sliding block 12 can move relative to the curling passage 110 in a direction towards or away from the first opening. When the overedger with the pull cylinder 100 is used for sewing, a cut piece after double-layer folding can be placed between the bending main body 11 and the positioning component 211 through the first opening, wherein the folded double-layer cut piece is positioned in the hemming channel 110, the main body part of the cut piece extending along the direction deviating from the bending part is positioned outside the bending main body 11, at the moment, the hem of the double-layer cut piece is abutted to the sliding block 12, and the edge of the double-layer cut piece and the bending part of the cut piece are abutted to the positioning component 211. After the cut pieces penetrate through the pull cylinder 100 from the second opening and the third opening and are sewn, the cut pieces exceeding the positioning part 211 are cut off by a cutter of a sewing machine, meanwhile, overlock overedged stitches are formed at the edges of the three cut pieces, and the double-layer cut pieces and the cut piece main body are unfolded along the bending part, so that the neatly arranged scar stitches can be obtained.

It can be seen that the positioning component 211 can limit the position of the cut piece to control the distance of the cut piece relative to the cutter, thereby avoiding the damage of the cut piece caused by the cutting of the position of the scar needle by the cutter. Simultaneously, through slider 12 and the activity of first opening restriction cut-parts to ensure that the route parallel and level of overedged stitch is stable, in addition through the distance between adjustment slider 12 and the positioning member 211, can also control the width that the cut-parts was bent and the position of scar needle.

In some embodiments, the bending body 11 can be formed by bending a metal plate on which the crimping passage 110 is formed. Adopt the mode that a metal sheet bent the formation, can be convenient for should bend the shaping of main part 11, also can reduce the hookup location simultaneously, reduce cut-parts by the fish tail or collude the condition of silk when passing through turn-up passageway 110.

Specifically, the bending body 11 includes a first plate portion 111, a bending portion 112, and a second plate portion 113 connected in sequence, so that the first plate portion 111, the bending portion 112, and the second plate portion 113 are connected to form a hemming channel 110 having the first opening, the second opening, and a third opening, which is disposed opposite to the bending portion 112.

In other embodiments, the bending body can also be formed by combining a plurality of metal plates. For example, the bending body may include a first plate member and a second plate member disposed opposite to each other and spaced apart from each other, and a third plate member connected to the first plate member and the second plate member, so that the first plate member, the second plate member and the third plate member enclose a crimping passage having the first opening, the second opening and a third opening disposed opposite to the third plate member. The main part of bending includes the setting of polylith metal sheet, can design the size of the main part of bending according to using the scene to make the main part of bending and cut-parts can cooperate better.

The bending body 11 is formed by bending a single metal plate, and the bending body 11 includes a first plate portion 111, a bending portion 112, and a second plate portion 113.

In some embodiments, the bending main body 11 is provided with a first sliding slot 113a communicating with the curling passage 110, the first sliding slot 113a extends along the length direction of the curling passage 110, the sliding block 12 is provided with a first connecting hole communicating with the first sliding slot 113a, the slide tube 100 further includes a first fastening member 13, and the first fastening member 13 is disposed through the first sliding slot 113a and the first connecting hole to connect the sliding block 12 and the bending main body 11.

With this design of the first sliding slot 113a, the first fastening member 13 can be made movable in the length direction of the crimping passage 110, thereby ensuring, on the one hand, that the slider 12 can move in the crimping passage 110 in a direction toward or away from the first opening to adjust the distance between the slider 12 and the positioning member 211, and, on the other hand, that the slider 12 can be fixed to the bending main body 11 by the first fastening member 13 being connected to the first connecting hole through the first sliding slot 113 a.

Thus, when the pull cylinder 100 is used, the bent cut piece can be placed between the first plate part 111 and the second plate part 113 through the first opening, the cut piece is wrapped at one end of the first plate part 111, which is far away from the bent part 112 in the length direction of the hemming channel 110, and the edge of the cut piece positioned in the hemming channel 110 abuts against the sliding block 12, so that when the cut piece passes through the bending main body 11 through the second opening and the third opening, the bending position and the bending width of the cut piece can be kept flat and stable.

For example, the first fastening member 13 may be any one of a screw, a bolt, and a stud, so as to detachably connect the first fastening member 13 to the first connection hole, and facilitate adjusting the position of the sliding block 12.

In some embodiments, the bending structure 10 further includes a first adjusting member 14, the first adjusting member 14 is disposed between the first plate portion 111 and the second plate portion 113, the first adjusting member 14, the first plate portion 111 and the bending portion 112 together form a hemming channel 110 for passing the cut pieces, the first adjusting member 14 is provided with a second sliding slot 141, the second sliding slot 141 is communicated with the hemming channel 110 and extends along a length direction of the hemming channel 110, and the sliding block 12 is slidably connected to the second sliding slot 141.

Through the setting that increases first regulating part 14, can change the height of turn-up passageway 110 to the cut-parts surface fabric of adaptation different thickness, the operator can be according to the thickness of actual cut-parts, selectively adopts or does not adopt first regulating part 14.

In some embodiments, the first adjusting member 14 is in the form of a long strip, the bending main body 11 further includes a second fastening member 114, an end of the first adjusting member 14 away from the bending portion 112 is provided with a first adjusting hole 142, and the second fastening member 114 is disposed through the second plate portion 113 and the first adjusting hole 142. Thus, it is possible to not only connect the first regulating member 14 to the bending body 11 but also ensure that the crimping passage 110 remains open.

Further, a side of the first adjusting member 14 close to the bending portion 112 has a tilting portion 143, the tilting portion 143 is communicated with the second sliding groove 141 and is tilted along a height direction of the hemming channel 110, the slider 12 is provided with a first groove 121 opened toward the second plate portion 113, the first groove 121 is used for placing the tilting portion 143 to realize positioning of the first adjusting member 14, and the first connecting hole is disposed in the first groove 121. When the first adjustor 14 is disposed in the crimping passage 110, the raised portion 143 is disposed in the first groove 121, and the top of the raised portion 143 abuts against the second plate portion 113. That is, one end of the first adjusting member 14 is connected to the second plate portion 113 through the first adjusting hole 142 and the second fastening member 114, and the other end of the first adjusting member 14 is fixed between the slider 12 and the second plate portion 113 through the raised portion 143. Like this, increase the setting of perk portion 143 and first recess 121, can be favorable to fixed first regulating part 14, simultaneously, increase first recess 121 and can also be favorable to seting up of first connecting hole.

Further, by adjusting the length of the second fastening member 114, the height of the first adjusting member 14 relative to the first plate portion 111 can be adjusted, so that the height of the hemming channel 110 can be adjusted, and the folding structure 10 can be adapted to cut pieces with different thicknesses.

Alternatively, the second fastener 114 may be any one of a bolt, a screw, or a stud to enable the detachable connection of the first adjusting member 14 to the bending body 11 while facilitating the height adjustment of the first adjusting member 14 within the crimping passage 110.

Referring to fig. 4 to fig. 6, in some embodiments, the slide 100 further includes a first connecting element 40, the first connecting element 40 is located on the bending body 11 and the distance adjusting structure 20, the first connecting element 40 includes a first connecting portion 41 and a second connecting portion 42, the first connecting portion 41 is connected to the bending body 11, and the second connecting portion 42 is connected to the distance adjusting structure 20. With the arrangement of the first connecting member 40, the bending structure 10 and the pitch adjusting structure 20 can be integrally connected while ensuring the bending function of the bending main body 11.

Further, the connection manner of the first connection portion 41 and the bending main body 11 may be any one of welding, gluing, or joggling.

In one example, the first connecting portion 41 and the bending body 11 are made of metal, and the connecting manner of the first connecting portion 41 and the bending body 11 is welding. Specifically, the first connecting portion 41 may be a long strip-shaped plate structure, and the first connecting portion 41 and the side of the second plate portion 113 away from the crimping passage 110 are fixed by welding, so that the first connecting portion 41 and the bending body 11 can be connected, and the crimping passage 110 is ensured to be unobstructed.

In another example, the first connection portion 41 and the bending main body 11 may be made of metal or plastic, and the connection manner of the first connection portion 41 and the bending main body 11 is glue. Specifically, the first connection portion 41 may be a long-strip plate-shaped structure, an adhesive is coated on a surface of the first connection portion 41 contacting the second plate portion 113, a connection state of the first connection portion 41 and the second plate portion 113 is maintained, and a certain time is waited for the adhesive to solidify, so that the first connection portion 41 and the second plate portion 113 are fixed, the first connection portion 41 is connected with the bending main body 11, and the first connection portion 41 is connected with the bending main body 11 more simply and conveniently.

Further, the connection manner of the second connection portion 42 and the distance adjusting structure 20 may be any one of a snap connection, a welding or a joggle.

In one example, the second connecting portion 42 is connected to the distance adjusting structure 20 by a snap-fit connection. Specifically, the second connecting portion 42 may be a long-strip plate-shaped structure, the second connecting portion 42 is provided with a second groove 421 having an opening facing away from the first connecting portion 41, the top of the distance adjusting structure 20 is provided with a protrusion 212, and the second connecting portion 42 is connected to the protrusion 212 through the second groove 421, so that the second connecting portion 42 is connected to the distance adjusting structure 20. Further, in order to improve the connection reliability between the second connection portion 42 and the distance adjustment structure 20, a third fastener and a gasket may be disposed through the second connection portion 42 and the bump 212, and a diameter of the gasket is greater than a width of the second groove 421. It is to be understood that the third fastener may be any one of a screw, a bolt, and a stud.

In another embodiment, the second connecting portion 42 and the distance adjusting structure 20 are made of metal, and the connecting manner of the second connecting portion 42 and the distance adjusting structure 20 is welding. Specifically, the second connection portion 42 may be an elongated plate-shaped structure, and the second connection portion 42 is fixed to the top of the distance adjusting structure 20 by welding, so that the connection between the second connection portion 42 and the distance adjusting structure 20 is more reliable.

In some embodiments, since the pull cylinder 100 is applied to the overedger, the cut piece is usually sewn by the presser foot after passing through the bending structure 10 of the pull cylinder 100, and the presser foot is usually connected to the needle of the overedger, during the actual sewing operation, the needle or the cut piece is usually adjusted to enable the sewing to be performed normally, based on which, the first connecting portion 41 can rotate relative to the second connecting portion 42 to drive the bending main body 11 to rotate relative to the second connecting portion 42 to bear against the second connecting portion 42. Therefore, on the one hand, the bending main body 11 can be prevented from interfering the sight of an operator when the needle lines or the cut pieces are adjusted, on the other hand, the size of the pull cylinder 100 can be reduced when the pull cylinder is not required to be used, and the integral storage and arrangement are facilitated.

In other embodiments, the distance adjustment structure 20 is provided with a first blocking portion 2221, and the bending main body 11 can rotate relative to the distance adjustment structure 20 to abut against the first blocking portion 2221, so that the bending main body 11 is folded on the distance adjustment structure 20. Therefore, the bending main body 11 can not only avoid interfering with the sight of an operator when the stitches or cut pieces are adjusted, but also improve the stability of the bending main body 11 in the bearing state.

Specifically, the first blocking portion 2221 may have any one of an L shape, a T shape and an arc shape, so as to provide a bearing point for the bending main body 11, so that the bending main body 11 is more stable and reliable when bearing on the first blocking portion 2221.

Further, the first connecting portion 41 is rotatably connected to the second connecting portion 42, and the rotatable connection between the first connecting portion 41 and the second connecting portion 42 may be a hole-axis connection, for example, the first connecting portion 41 may have a shaft hole, the second connecting portion 42 may have a rotating shaft, and the rotating shaft and the shaft hole are matched to realize a rotatable connection, or the first connecting member 40 further includes a shaft connecting component, the first connecting portion 41 and the second connecting portion 42 are respectively provided with a first through hole and a second through hole, and the shaft connecting component is inserted into the first through hole and the second through hole to realize a rotatable connection between the first connecting portion 41 and the second connecting portion 42.

In some embodiments, as can be seen from the foregoing, the side of the distance adjusting structure 20 facing the first opening is provided with a positioning component 211, based on which, the distance adjusting structure 20 includes a pressing block 21 and a second connecting component 22, the positioning component 211 is disposed on the pressing block 21, one end of the second connecting component 22 is connected to the side of the pressing block 21 away from the positioning component 211, and the other end of the second connecting component 22 is connected to the fixing structure 30.

Like this, the both sides of roll adjustment structure 20 are equipped with bending structure 10 and fixed knot constructs 30 respectively, and one end through at roll adjustment structure 20 sets up positioning element 211 and carries on spacingly to the cutting blade, simultaneously with the other end fixed to the hemming machine of roll adjustment structure 20 to make roll adjustment structure 20 have the effect of middle transition, thereby be favorable to the maintenance of each part to be changed.

It is understood that the protrusion 212 may be disposed on the pressing block 21 or on the second connecting member 22. In the present embodiment, the bump 212 is disposed on the pressing block 21 as an example, so that the space can be effectively utilized and the size of the second connection portion 42 can be reduced.

Further, the pressing block 21 is provided with a mounting groove 213 opening toward the second connecting member 22, the second connecting member 22 includes a first mounting portion 221 and a first fixing portion 222 connected to the first mounting portion 221, the first mounting portion 221 at least partially extends into the mounting groove 213 and is connected to the mounting groove 213, and the first fixing portion 222 is connected to the fixing structure 30. Thereby enabling the detachable connection of the second connecting member 22 with the pressing block 21.

Referring to fig. 7, in some embodiments, the first mounting portion 221 may be a long plate-shaped structure, the bottom surface of the first mounting portion 221 is provided with a protrusion 2211, the protrusion 2211 is provided with a second connection hole 2211a, the distance adjusting structure 20 further includes a second adjusting piece 23 and a mounting part 24, the mounting part 24 is connected to a side of the pressing block 21 away from the positioning part 211, the mounting part 24 is provided with a third connection hole 241 communicated with the second connection hole 2211a, and the second adjusting piece 23 is movably connected to the third connection hole 241 and the second connection hole 2211 a.

Like this, second regulating part 23 and second connecting hole 2211a, third connecting hole 241 cooperation is connected, through adjusting the length that second regulating part 23 passes through third connecting hole 241, can adjust the position that first installation department 221 stretches into mounting groove 213, with the relative position of adjusting briquetting 21 and second connecting piece 22, thereby adjust the position of the relative cutter of positioning component 211, and then can restrict the distance of the relative cutter of cut-parts, cut-parts is cut out by the cutter in order to avoid, ensure the integrality of cut-parts, improve finished product quality. Meanwhile, the position of the pressing block 21 and the bending structure 10 relative to the presser foot can be adjusted by adjusting the position of the first mounting part 221 extending into the mounting groove 213, so that the position of the overedged stitch from the edge of the cutting piece is controlled.

In addition, the second adjusting part 23 is inserted into the third connecting hole 241 of the mounting part 24, so that the mounting part 24 is received by the second adjusting part 23 and provides support for the second adjusting part 23.

In some embodiments, as can be seen from the foregoing, one end of the second connecting member 22 is connected to one side of the pressing block 21 away from the positioning member 211, the second connecting member 22 includes a first mounting portion 221 extending into the mounting groove 213 and a first fixing portion 222 connected to the fixing structure 30, and the mounting member 24 is connected to one side of the pressing block 21 away from the positioning member 211, based on which the mounting members 24 are located on both sides of the first fixing portion 222 and connected to the pressing block 21.

Further, the mounting part 24 may include any one of a hollow square or V-shaped, a U-shaped sheet structure, and a plate structure, so that the mounting part 24 can provide a supporting and fixing function for the second adjusting part 23 while ensuring that the position of the first mounting part 221 protruding into the mounting groove 213 is adjustable.

Further, to facilitate the installation and adjustment of the second adjusting member 23, the third connecting hole 241 may communicate with the hollow portion of the installation part 24.

In some embodiments, in order to fix the position of the first mounting portion 221 relative to the mounting groove 213, the pressing block 21 is provided with a fourth fastening member 25, and the fourth fastening member 25 abuts against the first mounting portion 221. In the process of actual debugging and installation, the position of the first installation part 221 extending into the installation groove 213 is adjusted through the second adjusting piece 23 so as to adjust the position of the positioning component 211 relative to the cutter, and after the positioning component 211 is adjusted to the position meeting the sewing requirement, the fourth fastener 25 penetrates through the pressing block 21 and abuts against the first installation part 221, so that the first installation part 221 and the pressing block 21 are fixed.

Specifically, the fourth fastener 25 may be any one of a bolt, a screw, or a stud to enable the position of the first mounting portion 221 relative to the pressing block 21 to be adjustable.

It is understood that when the fourth fastening member 25 is any one of a bolt, a screw or a stud and is inserted into the pressing block 21, the pressing block 21 is correspondingly provided with a threaded hole communicated with the mounting groove 213.

In some embodiments, as can be seen from the foregoing, the bending main body 11 can rotate relative to the distance adjusting structure 20, and the bending main body 11 can rotate relative to the distance adjusting structure 20 to bear against the second connecting portion 42 or the first stopping piece 2221 of the distance adjusting structure 20, and based on this, in order to improve the stability of the bending main body 11 bearing against other structures after rotating, the second connecting member 22 further includes a transition portion 223, and the transition portion 223 extends upward from a side of the first mounting portion 221, which is away from the pressing block 21, to be connected with the first fixing portion 222, so that a distance from a plane where the first fixing portion 222 is located to a bottom surface of the pressing block 21 is greater than a distance from a plane where the first mounting portion 221 is located to the bottom surface of the pressing block 21. In this way, the height of the second connector 22 can be increased, so that the second connector 22 can provide support for the bending body 11 when the bending body 11 is rotated to bear against other structures.

In one example, when the bending main body 11 rotates relative to the distance adjustment structure 20 to abut against the second connection portion 42, the height of the second connection member 22 can be increased by increasing the arrangement of the transition portion 223, so as to provide another abutting point for the bending main body 11, thereby improving the stability of the bending main body 11 in the abutting state.

In another example, when the bending main body 11 rotates relative to the distance adjusting structure 20 to abut against the first blocking portion 2221 of the distance adjusting structure 20, the first blocking portion 2221 may be disposed on the first fixing portion 222, and the transition portion 223 is added to increase the height of the first blocking portion 2221, so as to facilitate the abutment of the bending main body 11.

In some embodiments, the fixing structure 30 includes a third connecting member 31 and a fourth connecting member 32 connected to the third connecting member 31, the third connecting member 31 is connected to the distance adjusting structure 20, and the fourth connecting member 32 is used for connecting to the overedger. Thereby connecting the bending structure 10, the distance adjusting structure 20 and the fixing structure 30 into a whole and fixing the slide 100 to the overedger.

Further, the third connecting member 31 and the fourth connecting member 32 may be long-strip-shaped plate structures, and one end of the third connecting member 31 close to the distance adjusting structure 20 is provided with a first bending portion 310, and the first bending portion 310 is connected to one side of the first fixing portion 222 far from the transition portion 223, so that not only the third connecting member 31 can be fixed to the distance adjusting structure 20, but also the structure of the second connecting member 22 can be fully utilized, thereby reducing the overall size of the pull cylinder 100.

In some embodiments, one end of the fourth connecting member 32 close to the overedger is provided with a second bent portion 320, the second bent portion 320 is provided with a fixing hole 321 along the length direction of the fourth connecting member 32, and the fourth connecting member 32 is connected to the overedger through the fixing hole 321, so as to fixedly connect the whole draw tube 100 to the overedger.

Referring to fig. 8, in some embodiments, the fourth connecting member 32 is rotatably connected to the third connecting member 31 to rotate relative to the third connecting member 31 to overlap the third connecting member 31, so that on one hand, the position of the pull cylinder 100 relative to the overedger can be adjusted to adjust the angle and relative position of the cut pieces entering the presser foot through the pull cylinder 100, and on the other hand, when the pull cylinder 100 is not used, the volume of the pull cylinder 100 can be reduced, which is beneficial to the overall storage and arrangement.

Further, the second bending portion 320 is opposite to the first bending portion 310 in bending direction, the first bending portion 310 extends in a direction away from the fourth connecting member 32, and the second bending portion 320 extends in a direction away from the third connecting member 31, so that the first bending portion 310 and the second bending portion 320 can prevent mutual interference while respectively fixing the third connecting member 31 and the fourth connecting member 32, and the fourth connecting member 32 can rotate relative to the third connecting member 31 to be stacked on the third connecting member 31.

Further, the third connecting member 31 is provided with a limiting member 311, and the fourth connecting member 32 is correspondingly provided with a third groove 322 opened toward the limiting member 311. Therefore, when the fourth connecting member 32 is stacked on the third connecting member 31, the limiting member 311 is at least partially disposed and received in the third recess 322 to maintain the state and position of the fourth connecting member 32 stacked on the third connecting member 31.

Specifically, to facilitate the movement of the limiting member 311 into and out of the third groove 322, the limiting member 311 may have a semicircular or arc-shaped structure, and may be, for example, a half-headed screw or a half-headed bolt.

Further, the fixing structure 30 further includes an elastic member 33, one end of the elastic member 33 is fixed to the third connecting member 31, the other end of the elastic member 33 is tilted in a direction away from the third connecting member 31 and is connected to the limiting member 311, and the elastic member 33 is used for enabling the limiting member 311 to move relative to the third connecting member 31.

In this way, the limiting member 311 can move relative to the third connecting member 31 by utilizing the elastic deformation capability of the elastic member 33, so that the limiting member 311 can be accommodated in the third groove 322 or separated from the third groove 322.

Illustratively, when the fourth connecting member 32 is horizontally arranged with the third connecting member 31, the elastic member 33 is balanced, and the positions of the elastic member 33 and the limiting member 311 are relatively stable. When the fourth connecting member 32 rotates in the direction of being overlapped on the third connecting member 31, the limiting member 311 limits and obstructs the fourth connecting member 32, so that the fourth connecting member 32 cannot be overlapped on the third connecting member 31, the elastic component 33 connected to the limiting component 311 is deformed by applying an external force to the fourth connecting component 32 relative to the limiting component 311, and at this time, the elastic component 33 moves away from the third connecting component 31 to drive the limiting component 311 to move relative to the third connecting component 31, so that the fourth link 32 can be overlapped on the third link 31, when the fourth link 32 is rotated to the third groove 322 to be aligned with the restriction member 311, the external force applied to the limiting member 311 is reduced, the elastic member 33 is restored to the initial state by the elastic force, the limiting member 311 moves along with the elastic member, so that the restriction member 311 is partially disposed in the third groove 322, at which time the restriction member 311 can restrict the state and position of the fourth coupling member 32.

Specifically, the elastic member 33 may be an elastic sheet or a silicon sheet, thereby providing an elastic force to the restriction member 311.

In other embodiments, the fourth connecting member 32 is slidably connected to the third connecting member 31, so that the length of the fixing structure 30 is adjustable, on one hand, the position of the pull cylinder 100 relative to the overedger can be adjusted, the relative position of the cut piece entering the presser foot through the pull cylinder 100 can be adjusted, the position of the overedged stitch away from the edge of the cut piece can be controlled, and on the other hand, the volume of the pull cylinder 100 can be reduced, and the whole storage and arrangement are facilitated.

Further, the fourth connecting member 32 is provided with a third sliding slot along its length direction, the third connecting member 31 is provided with a positioning hole communicated with the third sliding slot and a fastening member connected to the third sliding slot and the positioning hole, and the third sliding slot can move relative to the positioning hole to adjust the relative position of the fourth connecting member 32 and the third connecting member 31.

Referring to fig. 9, in a second aspect, an embodiment of the present invention further provides an overlock machine 200, in which the overlock machine 200 includes an overlock machine body 102, a presser foot 101 and the pull cylinder 100 as described in the first aspect, the fixing structures of the presser foot 101 and the pull cylinder 100 are respectively connected to the overlock machine body 102, and the presser foot 101 is disposed at the rear end of the pull cylinder 100 along the direction of the cut piece conveying, so as to sew the cut piece passing through the pull cylinder 100. It can be understood that, since the overlock machine 200 includes the pull sleeve 100 described in the first aspect, the overlock machine 200 has the advantages of the pull sleeve 100 described in the first aspect, and therefore, the detailed description thereof is omitted.

The pull-out drum and the overedger disclosed by the embodiment of the invention are described in detail, the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the pull-out drum and the overedger and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (16)

1. A pull cup, comprising:

a securing structure having opposed first and second ends, the first end for securing to a overedger;

the distance adjusting structure is connected to the second end and provided with a positioning component; and

bending structure, bending structure is including bending main part and slider, bending the main part connect in the roll adjustment structure, bending the main part and having the turn-up passageway, the turn-up passageway has first opening, second opening and third opening, first opening orientation the roll adjustment structure the locating part sets up, the second opening the third opening sets up relatively, just the second opening the third opening is used for supplying the cut-parts to pass, slider slidable locates the turn-up passageway, the slider can be relative the turn-up passageway is along orientation or keeping away from the direction motion of first opening, in order to adjust the slider with distance between the locating part.

2. The slide holder according to claim 1, wherein the bending main body is provided with a first sliding slot communicated with the crimping passage, the first sliding slot extends along a length direction of the crimping passage, the slide block is provided with a first connecting hole communicated with the first sliding slot, the slide holder further comprises a first fastening member, and the first fastening member is inserted into the first sliding slot and the first connecting hole, so that the slide block is connected with the bending main body.

3. The pull cup according to claim 1, wherein the bending structure further comprises a first adjusting member disposed in the crimping passage along a height direction of the crimping passage, the first adjusting member is provided with a second sliding groove communicated with the crimping passage and extending along a length direction of the crimping passage, and the sliding block is slidably connected to the second sliding groove.

4. The pulling can of claim 3, wherein said first adjustment member is movably disposed with respect to said bending body in a height direction of said crimping passage.

5. The pulling cup as set forth in claim 1 further comprising a first connector on said bending body and said pitch structure, said first connector being connected to said bending body and said pitch structure.

6. The pulling cylinder according to claim 5, wherein the first connecting member comprises a first connecting portion and a second connecting portion, the first connecting portion is rotatably connected to the second connecting portion, the first connecting portion is connected to the bending main body, the second connecting portion is connected to the distance adjusting structure, the first connecting portion is rotatable relative to the second connecting portion to drive the bending main body to rotate relative to the second connecting portion to abut against the second connecting portion, or a first blocking piece is arranged on the distance adjusting structure, and the bending main body is rotatable relative to the distance adjusting structure to abut against the first blocking piece.

7. A pulling barrel according to any one of claims 1-6, characterized in that the distance adjusting structure comprises a pressing block and a second connecting piece, the pressing block is provided with the positioning component, one end of the second connecting piece is connected to the side of the pressing block facing away from the positioning component, and the other end of the second connecting piece is connected to the fixing structure.

8. The pulling cylinder according to claim 7, wherein the pressing block is provided with a mounting groove with an opening facing the second connecting piece, the second connecting piece comprises a first mounting portion and a first fixing portion connected to the first mounting portion, the first mounting portion at least partially extends into the mounting groove and is connected to the mounting groove, and the first fixing portion is connected to the fixing structure.

9. The pull cylinder of claim 8, wherein the first mounting portion is movably connected to the mounting groove, and the distance adjusting structure further comprises a second adjusting member connected to the pressing block and the first mounting portion to adjust a position at which the first mounting portion extends into the mounting groove.

10. The pull cylinder according to claim 9, wherein a protruding portion is disposed on a bottom surface of the first mounting portion, the protruding portion is provided with a second connecting hole, the distance adjusting structure further comprises a mounting member, the mounting member is connected to a side of the press block away from the positioning member, a third connecting hole communicated with the second connecting hole is disposed on the mounting member, and the second adjusting member is movably connected to the third connecting hole and the second connecting hole.

11. The pull cylinder according to claim 8, wherein the second connecting piece further comprises a transition portion extending upward from a side of the first installation portion away from the pressing block to be connected with the first fixing portion, so that a distance from a plane where the first fixing portion is located to a bottom surface of the pressing block is greater than a distance from the plane where the first installation portion is located to the bottom surface of the pressing block.

12. A pull cup according to any one of claims 1 to 6, wherein the fixing structure comprises a third connecting member connected to the distance adjustment structure and a fourth connecting member connected to the third connecting member for connection to the overlock machine.

13. The pulling cylinder according to claim 12, wherein the fourth connecting member is rotatably connected to the third connecting member so as to be rotated relative to the third connecting member to be stacked on the third connecting member, or the fourth connecting member is slidably connected to the third connecting member.

14. A pull cup as set forth in claim 13 wherein the third link member is provided with a limiting member for engaging the fourth link member to limit the position at which the fourth link member is stacked on the third link member when the fourth link member is rotatably coupled to the third link member.

15. A pull cup as claimed in claim 14, wherein said securing structure further comprises a resilient member having one end connected to said third connecting member and another end connected to said limiting member, said resilient member being adapted to allow said limiting member to be movable relative to said third connecting member.

16. An overlock machine, characterized in that it comprises an overlock machine body, a presser foot and a pull cylinder according to any one of claims 1 to 15, the fixing structures of the presser foot and the pull cylinder being respectively connected to the overlock machine body.

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