CN116005371A - Fabric ring opening sewing device and fabric ring opening sewing method - Google Patents

Abstract

The present disclosure provides a fabric loop seam sewing device and a fabric loop seam sewing method. The fabric loop sewing device comprises: a fabric supporting mechanism, a flanging mechanism and a sewing mechanism; the fabric support mechanism comprises two spaced supports; the flanging mechanism comprises a first flanging piece and a second flanging piece which are matched for use; the first edge folding piece is provided with a first edge folding channel, an edge folding piece working area and an edge folding piece accommodating groove, and the second edge folding piece is provided with a second edge folding channel; the first edge folding piece and the second edge folding piece are positioned between the two supporting pieces; the sewing mechanism is used for sewing the folded edge and the main body of the fabric to form a ring opening. The fabric annular opening sewing device can automatically finish subsequent flanging and annular opening preparation, greatly simplifies the working procedures requiring personnel to operate, and can effectively improve the working efficiency of annular opening sewing.

Description

Fabric ring opening sewing device and fabric ring opening sewing method

Technical Field

The invention relates to the technical field of textile, in particular to a fabric annular opening sewing device and a fabric annular opening sewing method.

Background

Fabrics such as pillowcases have openings. In the production of these fabrics, a loop sewing process is often required. The procedure of sewing the ring mouth is as follows: the opening of the fabric is folded twice, then the edge of the fabric is folded, and the folded edge and the fabric main body are sewn to form a ring opening. In the process, the action of forming the folded edge is complex, a certain flexibility is needed, and the operation is difficult to be accurately and efficiently finished through a machine, so that a large number of manual operation steps exist in the past loop sewing procedure, and the production efficiency is extremely limited.

Disclosure of Invention

Accordingly, it is desirable to provide a fabric loop seam apparatus that can improve the efficiency of the loop seam operation.

According to some embodiments of the present disclosure, there is provided a fabric loop seam allowance sewing device comprising: a fabric supporting mechanism, a flanging mechanism and a sewing mechanism;

the fabric supporting mechanism comprises two spaced supporting pieces, and the supporting pieces are used for supporting the fabric to be folded;

the edge folding mechanism comprises a first edge folding piece and a second edge folding piece which are matched for use, and the first edge folding piece and the second edge folding piece are positioned between the two supporting pieces;

the first flanging piece is provided with a first flanging channel, a flanging piece working area and a flanging piece accommodating groove, the first flanging channel is provided with openings penetrating through two sides in a second direction intersecting with the first direction, the lower part of the first flanging channel in a third direction is provided with the flanging piece working area and the flanging piece accommodating groove, and the third direction intersects with the first direction and the second direction;

the second flanging piece is provided with a second flanging channel communicated with the first flanging channel, the second flanging piece can move between the working area of the flanging piece and the accommodating groove of the flanging piece, and the second flanging channel is provided with openings penetrating through two sides in the second direction;

The sewing mechanism is arranged on the side edges of the first edge folding piece and the second edge folding piece in the second direction and is used for sewing the edge folding of the fabric.

In some embodiments of the present disclosure, the alignment mechanism further comprises an alignment driving member connected to at least one of the support members, the alignment driving member being configured to drive the support members to move in the first direction.

In some embodiments of the present disclosure, the fabric support mechanism further comprises at least one support drive connected to the support, the support drive for driving the support to adjust the distance between the two supports.

In some embodiments of the present disclosure, one of the alignment drive and the support drive is connected to the alignment drive, and the other is connected to the support drive.

In some embodiments of the present disclosure, a deviation correcting mechanism is further included, the deviation correcting mechanism including a rotatable first deviation correcting wheel, a rotatable second deviation correcting wheel, and a fabric position detector; the first deviation correcting wheel and the second deviation correcting wheel are arranged on a fabric moving path between the first flanging piece and one of the supporting pieces;

The fabric position detector is electrically connected with the first deviation correcting wheel and the second deviation correcting wheel, the first deviation correcting wheel is used for adjusting the length of the fabric entering the first folding edge channel, and the second deviation correcting wheel is used for adjusting the length of the fabric entering the second folding edge channel.

In some embodiments of the present disclosure, the sewing needle in the sewing mechanism is disposed on a side of the hemming mechanism away from the first deviation rectifying wheel and the second deviation rectifying wheel.

In some embodiments of the present disclosure, the label holding member is located between the first folding member and one of the supporting members, the label holding member is used for holding the label, and the holding driving member is used for driving the label holding member to press the label on the folded edge of the fabric.

In some embodiments of the present disclosure, the method further comprises a marker adsorbing member, wherein the marker adsorbing member is disposed below the marker clamping member, and the marker adsorbing member is used for adsorbing the marker.

In some embodiments of the present disclosure, the first hemming member includes a first limiting plate, a second limiting plate, and a third limiting plate sequentially disposed at intervals in the third direction, the second limiting plate having a length shorter than the first limiting plate and the third limiting plate;

The first edge folding channel is arranged between the first limiting plate and the second limiting plate, the accommodating groove is arranged between the second limiting plate and the third limiting plate, and the edge folding working area is arranged in an area between the first limiting plate and the third limiting plate, which is not provided with the second limiting plate.

In some embodiments of the present disclosure, the first hemming member further includes a first connecting plate, a second connecting plate, and a third connecting plate that are sequentially disposed at intervals, a head end of the first limiting plate in the first direction and a head end of the third limiting plate in the first direction are connected through the first connecting plate, a tail end of the second limiting plate in the first direction and a tail end of the third limiting plate in the first direction are connected through the second connecting plate, and the third connecting plate is connected to a tail end of the first limiting plate in the first direction.

In some embodiments of the present disclosure, the first hemming member further includes at least one side baffle disposed between the second limiting plate and the third limiting plate and connected to a side of the second limiting plate in the second direction and a side of the third limiting plate in the second direction.

In some embodiments of the present disclosure, the second hemming member includes a fourth limiting plate and a fifth limiting plate disposed at intervals in the third direction, the fourth limiting plate and the fifth limiting plate being disposed between the first limiting plate and the third limiting plate, the fourth limiting plate and the fifth limiting plate being provided with the second hemming channel therebetween.

In some embodiments of the present disclosure, the second hemming member further includes a fourth connection plate, the tail end of the fourth limit plate in the first direction and the tail end of the fifth limit plate in the first direction are connected by the fourth connection plate, and the fourth connection plate is located between the first connection plate and the second connection plate.

In some embodiments of the present disclosure, the hemming mechanism further includes a hemming driving member for driving the second hemming member to move.

In some embodiments of the present disclosure, the hemming mechanism further includes a hemming rotating member for rotating the first and second hemming members about the second direction.

In some embodiments of the present disclosure, the hemming drive includes a driving member, a guide member, and a connecting member, the driving member being provided on the guide member and movable along the guide member, the driving member being connected to the second hemming member by the connecting member;

The first flanging piece is fixedly connected to the guide component, the flanging rotating piece comprises a rotating shaft and an operating handle, the flanging guide piece is rotatably connected to the rotating shaft, and the operating handle is connected to the flanging guide component.

The present disclosure also provides a fabric loop sewing method, comprising the steps of:

placing the second hemming member in the work area of the hemming member in the first hemming member using the fabric-opening sewing device of any of the embodiments described above;

sleeving the fabric on the two supporting pieces, guiding the edge of the fabric to enter the first folding channel, and guiding the edge of the fabric to enter the second folding channel from the first folding channel to form a folded edge;

moving the fabric such that an edge of the fabric passes continuously through the side openings of the first and second hemming members in a second direction while sewing the hem to a main body portion of the fabric to form a loop; the method comprises the steps of,

and controlling the second flanging piece to enter the flanging piece accommodating groove, and controlling the fabric to exit the first flanging channel.

The annular opening sewing device comprises a fabric supporting mechanism, a flanging mechanism and a sewing mechanism. The support mechanism is used for opening the opening of the fabric and is convenient for the edge of the fabric to carry out translational motion, the flanging mechanism is provided with a first flanging channel and a second flanging channel which are communicated, the fabric is transferred into the second flanging channel after entering the tail end of the first flanging channel, namely, the flanging can be formed, and then the formed flanging is sewn to form a ring opening. Meanwhile, the first flanging piece is also provided with a flanging piece working area and a flanging piece accommodating groove, and the sewn ring opening can conveniently exit the second flanging channel in a mode of moving the second flanging piece between the flanging piece working area and the flanging piece accommodating groove. In the process of preparing the ring mouth by adopting the fabric ring mouth sewing device, the subsequent preparation of the edge folding and the ring mouth can be automatically completed only by sleeving the openings of the fabrics on the two supporting pieces by operators and conveying the edges of the fabrics into the edge folding mechanism, so that the process of needing personnel to operate is greatly simplified, and the working efficiency of ring mouth sewing can be effectively improved.

Drawings

FIG. 1 shows a schematic structural view of a fabric loop sewing device;

FIG. 2 shows a schematic structural view of the fabric support mechanism of FIG. 1;

FIG. 3 shows a schematic structural view of the hemming mechanism of FIG. 1;

FIG. 4 shows a schematic view of the first hemming member of FIG. 3;

FIG. 5 shows a schematic view of the second hemming member of FIG. 3;

FIG. 6 is a schematic view showing the configuration of the first and second hemming members of FIG. 3 in use in combination;

FIG. 7 is a schematic diagram showing the cooperation of the hemming mechanism and the deviation rectifying mechanism in FIG. 1;

FIG. 8 is a schematic view of the label holding mechanism of FIG. 1;

wherein, each reference sign and meaning are as follows:

111. a first support; 112. a second support; 113. a support connection; 114. a support driving member; 120. a flanging mechanism; 1201. a first hemming channel; 1202. a hemming member working area; 1203. a flanging piece accommodating groove; 1204. a second flange channel; 121. a first hemming member; 1211. a first limiting plate; 1212. a second limiting plate; 1213. a third limiting plate; 1214. a first connection plate; 1215. a second connecting plate; 1216. a third connecting plate; 1217. side baffles; 122. a second flange member; 1221. a fourth limiting plate; 1222. a fifth limiting plate; 1223. a fourth connecting plate; 1231. a driving part; 1232. a guide member; 1233. a connecting member; 1241. a rotating shaft; 1242. an operation handle; 130. a sewing mechanism; 140. an alignment mechanism; 151. a first deviation correcting wheel; 152. a second deviation correcting wheel; 153. a fabric position detector; 160. a label placing mechanism; 161. mark holder; 162. clamping the driving member; 170. mark adsorption piece; 200. a fabric.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

It will be understood that when an element or layer is referred to as being "on," "adjacent," "connected to," or "coupled to" another element or layer, it can be directly on, adjacent, connected, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present application.

Spatially relative terms, such as "under," "below," "beneath," "under," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.

According to one embodiment of the present invention, there is provided a fabric loop sewing device comprising: a fabric supporting mechanism, a flanging mechanism and a sewing mechanism;

the fabric supporting mechanism comprises two spaced supporting pieces, and the supporting pieces are used for supporting the fabric to be folded;

the flanging mechanism comprises a first flanging piece and a second flanging piece which are matched for use, and the first flanging piece and the second flanging piece are positioned between the two supporting pieces;

the first hemming piece is provided with a first hemming channel, a hemming piece working area and a hemming piece accommodating groove, the first hemming channel is provided with openings penetrating through two sides in a second direction intersecting with the first direction, the first hemming channel is provided with the hemming piece working area and the hemming piece accommodating groove below in a third direction, and the third direction intersects with the first direction and the second direction;

the second flanging piece is provided with a second flanging channel communicated with the first flanging channel, the second flanging piece can move between the working area of the flanging piece and the accommodating groove of the flanging piece, and the second flanging channel is provided with openings penetrating through two sides in a second direction;

the sewing mechanism is arranged on the side edges of the first edge folding piece and the second edge folding piece in the second direction and is used for sewing the edge folding of the fabric.

The annular opening sewing device comprises a fabric supporting mechanism, a flanging mechanism and a sewing mechanism. The support mechanism is used for opening the opening of the fabric and is convenient for the edge of the fabric to carry out translational motion, the flanging mechanism is provided with a first flanging channel and a second flanging channel which are communicated, the fabric is transferred into the second flanging channel after entering the tail end of the first flanging channel, namely, the flanging can be formed, and then the formed flanging is sewn to form a ring opening. Meanwhile, the first flanging piece is also provided with a flanging piece working area and a flanging piece accommodating groove, and the sewn ring opening can conveniently exit the second flanging channel in a mode of moving the second flanging piece between the flanging piece working area and the flanging piece accommodating groove. In the process of preparing the ring mouth by adopting the fabric ring mouth sewing device, the subsequent preparation of the edge folding and the ring mouth can be automatically completed only by sleeving the openings of the fabrics on the two supporting pieces by operators and conveying the edges of the fabrics into the edge folding mechanism, so that the process of needing personnel to operate is greatly simplified, and the working efficiency of ring mouth sewing can be effectively improved.

Fig. 1 shows a schematic structural view of a ring opening sewing device of the present disclosure, and referring to fig. 1, the ring opening sewing device includes: a fabric support mechanism, a hemming mechanism 120 and a sewing mechanism 130.

The fabric supporting mechanism comprises a first supporting piece 111 and a second supporting piece 112, and the first supporting piece 111 and the second supporting piece 112 are arranged at intervals. The first support 111 and the second support 112 are used together to hold open the fabric 200 to be hemmed. The first support 111 and the second support 112 may be the same or different. In this embodiment, the first support 111 and the second support 112 are identical. The first support 111 and the second support 112 are separately provided at both sides of the hemming mechanism 120 so that the edge of the spread fabric 200 can enter the hemming mechanism 120 and perform the hemming process.

In some examples of this embodiment, the first support 111 and the second support 112 are both rotatable supports. Wherein a rotatable support means that the support is rotatable about its own axis such that the first support 111 and the second support 112 perform a rotational action in situ. The rotation shafts 1241 of the first and second supports 111 and 112 may be along the first direction. When the fabric 200 is sleeved on the rotatable support, the rotatable support can drive the fabric 200 to move through the rotation of the rotatable support, so that the edge of the fabric 200 translates through the hemming mechanism 120 along the second direction. Referring to fig. 1, the first direction is the x direction in fig. 1, the second direction is the y direction in fig. 1, and the third direction is the z direction in fig. 1. The first direction, the second direction and the third direction are intersected in pairs, and optionally, the first direction and the second direction are perpendicular to the third direction in pairs.

In some examples of this embodiment, the first support 111 and the second support 112 may be cylindrical supports such that the first support 111 and the second support 112 are fixed to the machine for rotation.

Fig. 2 shows a schematic structural view of a more specific fabric support mechanism. Referring to fig. 2, in some examples of this embodiment, the fabric support mechanism further includes at least one support drive 114. The support driving member 114 is connected to the support member, and the support driving member 114 is used for driving the support member to adjust the distance between the two support members. In the embodiment shown in fig. 1, there is only one support driving member 114, and the support driving member 114 is connected to the first support member 111 to drive the first support member 111 to move. Referring to fig. 1, the support driving member 114 is connected to the support member through a support connecting member 113. In the orientation shown in fig. 1, the support drive 114 is capable of translating the first support 111 in a second direction to change the distance between the first support 111 and the second support 112, such that the fabric support mechanism is readily applicable to fabrics 200 of various sizes.

Further, referring to fig. 2, the fabric loop seam apparatus of the present disclosure further includes an alignment mechanism 140. The alignment mechanism 140 includes an alignment driving member, which is connected to the second supporting member 112, and is used for driving the second supporting member 112 to move in the first direction. Wherein the movement in the first direction may be a forward movement or a backward movement in the first direction.

The alignment mechanism 140 can assist the seam location at the beginning of the fabric 200 to coincide with the seam location at the end. Specifically, with the fabric loop seam apparatus, when the loop edge of the fabric 200 travels around the loop seam crimping apparatus one turn and the seam is to be completed, the second hemming member 122 is moved into the hemming member receiving groove 1203 to withdraw the folding assist of the fabric, and then the fabric 200 is controlled to withdraw from the second hemming passage 1204, during which the fabric 200 is loosened. At this time, the second supporting member 112 may be controlled to reverse to pull the fabric 200 tightly, but during the reverse, the fabric 200 will slightly move along the first direction, and at this time, the alignment mechanism 140 is controlled to drive the second supporting member 112 to move along the first direction, so as to perform corresponding compensation according to the displacement condition of the fabric 200, so that the seam position at the beginning and the seam position at the end of the fabric 200 coincide.

Fig. 3 to 5 show a schematic structural view of the hemming mechanism 120 in more detail. Referring to fig. 3, hemming mechanism 120 includes a first hemming member 121 and a second hemming member 122.

Fig. 4 shows a schematic structural view of the first hemming member 121. Referring to fig. 4, first hemming member 121 has therein a first hemming passage 1201, a hemming member working region 1202 and a hemming member accommodating recess 1203, first hemming passage 1201 has openings penetrating both sides in a second direction intersecting the first direction, and first hemming passage 1201 is provided with hemming member working region 1202 and hemming member accommodating recess 1203 at a lower side in the third direction.

Referring to fig. 4, in some examples of the embodiment, the first hemming member 121 includes a first stopper plate 1211, a second stopper plate 1212, and a third stopper plate 1213 sequentially disposed at intervals in a third direction, the length of the second stopper plate 1212 being shorter than the length of the first stopper plate 1211 and the length of the third stopper plate 1213; a first hemming channel 1201 is arranged between the first and second limiting plates 1211, 1212 and the third limiting plate 1213, a receiving groove is arranged between the second and third limiting plates 1211, 1213, and a hemming working area is arranged in the region between the first and third limiting plates 1211, 1213 without the second limiting plate 1212.

Referring to fig. 4, in some examples of this embodiment, the first hemming member 121 further includes a first connecting plate 1214 and a second connecting plate 1215 disposed at a distance, a head end of the first stopper plate 1211 in the first direction and a head end of the third stopper plate 1213 in the first direction are connected by the first connecting plate 1214, and a tail end of the second stopper plate 1212 in the first direction and a tail end of the third stopper plate 1213 in the first direction are connected by the second connecting plate 1215.

Referring to fig. 4, in some examples of this embodiment, the first hemming member 121 further includes a third connecting plate 1216 disposed at a distance from the second connecting plate 1215, the third connecting plate 1216 being disposed at a side of the second connecting plate 1215 remote from the first connecting plate 1214, the third connecting plate 1216 being connected to a trailing end of the first stopper plate 1211 in the first direction. Between the third connecting plate 1216 and the second connecting plate 1215, there is a fabric feeding passage for the fabric 200 to enter, which communicates with the first hemming passage 1201. By further providing the fabric passage, the fabric 200 can be made smoother when entering the first hemming passage 1201.

Referring to fig. 4, in some examples of this embodiment, the first hemming member 121 further includes at least one side baffle 1217, the side baffle 1217 being disposed between the second and third limiting plates 1212 and 1213 and connected to a side edge of the second limiting plate 1212 in the second direction and a side edge of the third limiting plate 1213 in the second direction. Side guards 1217 serve to block web 200 from entering hemming member receiving slot 1203. Optionally, the side guards 1217 are perpendicular to the second direction.

Referring to fig. 5, second hemming member 122 has a second hemming passage 1204 communicating with first hemming passage 1201 therein, second hemming member 122 is movable between hemming member working area 1202 and hemming member accommodating recess 1203, and second hemming passage 1204 has an opening penetrating both sides in the second direction.

The second crimping piece 122 is located between the first and second limiting plates 1211 and 1212, and as shown with reference to fig. 5, in some examples of this embodiment, the second crimping piece 122 includes fourth and fifth limiting plates 1221 and 1222 disposed at intervals in the third direction, the fourth and fifth limiting plates 1221 and 1222 being disposed between the first and third limiting plates 1211 and 1213, and a second crimping passage 1204 being disposed between the fourth and fifth limiting plates 1221 and 1222.

Referring to fig. 5, in some examples of this embodiment, the second hemming member 122 further includes a fourth connecting plate 1223, the trailing end of the fourth stopper plate 1221 in the first direction and the trailing end of the fifth stopper plate 1222 in the first direction are connected by the fourth connecting plate 1223, and the fourth connecting plate 1223 is located between the first connecting plate 1214 and the second connecting plate 1215.

It will be appreciated that the first and second hemming members 121 and 122 are used in cooperation. Fig. 6 shows the co-operation of the first and second hemming members 121 and 122. Referring to fig. 6, the second flanging member 122 is located between the first limiting plate 1211 and the third limiting plate 1213, and the second flanging channel 1204 is in communication with the first flanging channel 1201. In actual use, the edge of the fabric 200 is reversed and turned into the first folding channel 1201 to form a first folded edge, and then the first folding channel 1201 is forward turned into the second folding channel 1204 to form a second folded edge. It will be appreciated that the direction of the web 200 entering the second folding channel 1204 is opposite to the direction of the web 200 entering the first folding channel 1201, and that the edge of the web 200 is reversed when entering the first folding channel 1201, and the edge of the web 200 is reversed when entering the second folding channel 1204, to form a fold.

Further, the fabric 200 forms folds in the first folding member 121 and the second folding member 122, which brings the fabric 200 outside the first folding member 121 and the second folding member 122 together. In actual use, the folds of the fabric 200 outside the first and second folding members 121, 122 may be sewn to form loops. The web 200 is then translated in a second direction such that the web 200 passes through the first folding channel 1201 along both openings of the first folding channel 1201 and the second folding channel 1204 along both openings of the second folding channel 1204, such that the entire edge of the web 200 is folded in sequence.

After the loop is formed, the remaining portion of the edge of the fabric 200 remains in the first and second folding channels 1201, 1204, which is difficult to exit. The present disclosure provides for a movable second hemming member 122, after forming the loop, moving the second hemming member 122 into the hemming member receiving groove 1203, the second hemming member 122 exits the loop, thereby enabling the fabric 200 to exit the second hemming member 122 and the first hemming member 121.

Referring to fig. 3, in some examples of this embodiment, a hemming drive member is further included for driving the second hemming member 122 to move.

Referring to fig. 3, in some examples of this embodiment, the hemming mechanism 120 further includes a hemming rotary member for rotating the first hemming member 121 and the second hemming member 122 around the second direction.

Referring to fig. 3, in some examples of this embodiment, the hemming driving member includes a driving member 1231, a guide member 1232, and a connecting member 1233, the driving member 1231 being provided on the guide member 1232 and being movable along the guide member 1232, the driving member 1231 being connected to the second hemming member 122 through the connecting member 1233; the first hemming member 121 is fixedly connected to the guide member 1232, the hemming rotary member includes a rotation shaft 1241 and an operation handle 1242, the hemming guide member is rotatably connected to the rotation shaft 1241, and the operation handle 1242 is connected to the hemming guide member 1232.

Referring to fig. 1, when the hemming-rotating member rotates around the second direction, the leading end (left side) of the first hemming passage 1201 is gradually rotated to above the trailing end (right side), and the hem of the fabric 200 can be withdrawn from the first hemming passage 1201 from the top down. Thus, providing a hemming rotor can make it easier for the fabric 200 to exit the hemming mechanism 120.

In some examples of this embodiment, to enable the second hemming member 122 to be connected to the connecting member 1233, referring to fig. 4, in some embodiments of the present disclosure, the first connecting plate 1214 is connected to a portion of the third limiting plate 1213, whereby the third limiting plate 1213 has a partially exposed void thereon. As shown in connection with fig. 3, the connecting member 1233 extends into the hemming member working area 1202 through the void and is connected to the fifth limiting plate 1222. Thereby attaching second hemming member 122 to the drive without interfering with the hemming of fabric 200.

In some examples of this embodiment, the fabric loop seam apparatus further includes a fabric hold down (not shown) for holding down the folds of the fabric 200, the fabric hold down being capable of holding down the folds of the fabric 200 as the fabric 200 exits the first folding channel 1201 and the second folding channel 1204, ensuring that the folds do not loosen.

In some examples of this embodiment, the fabric loop seam apparatus further includes an air jet mechanism (not shown) configured to jet air in a second direction toward the first folding channel 1201 and the second folding channel 1204 to assist in the hemming of the fabric 200 through the first folding channel 1201 and the second folding channel 1204.

As the edge of the fabric 200 passes through the first and second hemming members 121 and 122, a small error may occur in the position of the subsequent fabric 200, and the accumulation of the error may cause a problem of non-uniformity in the loop of the final fabric 200. To address this problem, in some examples of this embodiment, the fabric loop seam apparatus further includes a deviation rectifying mechanism including a first deviation rectifying wheel 151, a second deviation rectifying wheel 152, and a fabric position detector 153. The fabric position detector 153 is used to detect the position of the fabric 200. Alternatively, the fabric position detector 153 may be a photosensor. The fabric position detector 153 is electrically connected to the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152 to feed back the detected fabric 200 position to the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152, and the fabric 200 position is adjusted by the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152.

Fig. 7 shows a schematic structural diagram of the first deviation correcting wheel 151 and the second deviation correcting wheel 152 in the deviation correcting mechanism. Referring to fig. 7, the first deviation correcting wheel 151 and the second deviation correcting wheel 152 are disposed between the first hemming member 121 and the second supporting member 112, and the first deviation correcting wheel 151 and the second deviation correcting wheel 152 are disposed on the moving path of the fabric 200 between the first hemming member 121 and the second supporting member 112. In actual use, the fabric 200 is sleeved on the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152, and the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152 can adjust the edge position of the fabric 200 through rotation of themselves. Specifically, the first deviation correcting wheel 151 is used for adjusting the length of the fabric 200 entering the first folding channel 1201, and the second deviation correcting wheel 152 is used for adjusting the length of the fabric 200 entering the second folding channel 1204. By adjusting the two deflection correcting wheels, it is ensured that the length of the fabric 200 in the first folding path 1201 and the second folding path 1204 is fixed during the process of passing through the first folding member 121 and the second folding member 122, so as to ensure the uniformity of the loop opening of the finally prepared fabric 200.

The fabric position detector 153 need only be provided at a position where the fabric 200 can be detected. Alternatively, referring to fig. 1, a fabric position detector 153 is provided on the alignment mechanism 140.

In some examples of this embodiment, referring to fig. 1, the sewing mechanism 130 has a sewing needle therein, which is disposed on a side of the hemming mechanism 120 away from the first deviation rectifying wheel 151 and the second deviation rectifying wheel 152. After the fabric 200 is rectified by the first rectifying wheel 151 and the second rectifying wheel 152, the fabric enters the first flanging piece 121 and the second flanging piece 122 to finish flanging, and then is sewn by sewing after coming out of the first flanging piece 121 and the second flanging piece 122, so that the sewing accuracy is improved.

In some examples of this embodiment, a label holding mechanism 160 is also included. Fig. 7 shows a schematic structural view of the label feeding mechanism 160. Referring to fig. 7, the mark placing mechanism 160 includes a mark clamping member 161 and a clamping driving member 162, wherein the mark clamping member 161 is located between the first folding member 121 and the first supporting member 111, the mark clamping member 161 is used for clamping the mark, and the clamping driving member 162 is used for driving the mark clamping member 161 to press the mark onto the folding edge of the fabric 200.

In some examples of this embodiment, the label holding mechanism 160 may also include a label holding member (not shown). The pressing mark piece is used for pressing the mark on the fabric 200 after the mark is placed on the fabric 200 so as to avoid the mark from displacing.

Referring to fig. 1, in some examples of this embodiment, the ring sewing device further includes a marker adsorbing member 170, and the marker adsorbing member 170 is disposed below the marker holding member 161 for adsorbing the marker. The mark adsorption piece 170 can be a plate-shaped adsorption piece connected to an air extraction component, an air extraction hole is formed in the surface of the plate-shaped adsorption piece, and the air extraction component extracts air through the air extraction hole, so that negative pressure is generated on the surface of the mark adsorption piece 170, marks are adsorbed, and the problem that marks are shifted due to the fact that marks are pushed by a sewing machine presser foot in a sewing process is prevented.

In some examples of this embodiment, the mark clamping member 161 may be disposed at the side of the first hemming member 121 having the sewing needle to machine the mark on the loop of the fabric 200 while sewing the loop, saving the manufacturing process and improving the manufacturing efficiency.

The fabric loop sewing device provided by the embodiment can be used for preparing the loop of the fabric. For example, the fabric may be a pillow case.

Further, the present disclosure also provides a fabric loop sewing method, which includes the following steps:

placing the second hemming member in the hemming member working area in the first hemming member using the fabric-rim-opening sewing device as in the above embodiment;

Sleeving the fabric on the two supporting pieces, guiding the edge of the fabric to enter a first flanging channel, and guiding the edge of the fabric to enter a second flanging channel from the first flanging channel to form a flanging;

moving the fabric such that an edge of the fabric continuously passes through the side opening of the first hemming member and the side opening of the second hemming member in a second direction while sewing the hem to the main body portion of the fabric to form a loop; the method comprises the steps of,

and controlling the second flanging piece to enter the flanging piece accommodating groove, and controlling the fabric to exit the first flanging channel.

In some examples of this embodiment, further comprising: the fabric is sleeved on the first deviation correcting wheel and the second deviation correcting wheel, the position of the fabric is detected by the fabric position detector, the first deviation correcting wheel is controlled to adjust the length of the fabric entering the first folding channel according to the information detected by the fabric position detector, and the second deviation correcting wheel is controlled to adjust the length of the fabric entering the second folding channel.

In some examples of this embodiment, further comprising: in the step of sewing the hem to the main body portion of the fabric to form the loop, further comprising: and (3) placing the mark on the folded edge of the fabric by adopting a mark clamping piece, and sewing the mark on the folded edge of the fabric.

In some examples of this embodiment, after controlling the second hemming member to enter the hemming member receiving recess, further comprising: and rotating the first folding piece and the second folding piece by taking the second direction as a rotating shaft, so that the tail end of the first folding channel is higher than the head end, and then controlling the fabric to exit the first folding channel.

In some examples of this embodiment, after the control fabric exits the first hemming channel, further comprising: the fabric is moved in a first direction such that the stitches at the end of the fabric coincide with the stitches at the head end.

In the fabric annular opening sewing method, the fabric is firstly placed in a first hemming channel and a second hemming channel so that part of the edge of the fabric forms a hem, and then the rest part of the fabric is directly driven to continuously form the hem and the annular opening is sewn in a mode of translating the fabric along a second direction and simultaneously sewing. Compared with the manual flanging mode in the prior art, the fabric ring opening sewing method can effectively save labor required for preparing the ring opening and improve the preparation efficiency of the fabric ring opening.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (17)

1. A fabric loop sewing device, comprising: a fabric supporting mechanism, a flanging mechanism and a sewing mechanism;

the fabric supporting mechanism comprises two spaced supporting pieces, and the supporting pieces are used for supporting the fabric to be folded;

the edge folding mechanism comprises a first edge folding piece and a second edge folding piece which are matched for use, and the first edge folding piece and the second edge folding piece are positioned between the two supporting pieces;

the first flanging piece is provided with a first flanging channel, a flanging piece working area and a flanging piece accommodating groove, the first flanging channel is provided with openings penetrating through two sides in a second direction intersecting with the first direction, the lower part of the first flanging channel in a third direction is provided with the flanging piece working area and the flanging piece accommodating groove, and the third direction intersects with the first direction and the second direction;

The second flanging piece is provided with a second flanging channel communicated with the first flanging channel, the second flanging piece can move between the working area of the flanging piece and the accommodating groove of the flanging piece, and the second flanging channel is provided with openings penetrating through two sides in the second direction;

the sewing mechanism is arranged on the side edges of the first edge folding piece and the second edge folding piece in the second direction and is used for sewing the edge folding of the fabric.

2. The fabric loop sewing apparatus of claim 1, further comprising an alignment mechanism comprising an alignment drive coupled to at least one of the support members, the alignment drive configured to drive the support members to move in the first direction.

3. The fabric loop sewing apparatus of claim 2 wherein the fabric support mechanism further comprises at least one support drive coupled to the support, the support drive for driving the support to adjust the distance between the two supports.

4. A fabric loop sewing apparatus according to claim 3 wherein one of the alignment drive and the support drive is connected to one of the support members and the other support member is connected to the support drive.

5. The fabric loop sewing apparatus of claim 1, further comprising a deviation-correcting mechanism comprising a rotatable first deviation-correcting wheel, a rotatable second deviation-correcting wheel, and a fabric position detector; the first deviation correcting wheel and the second deviation correcting wheel are arranged on a fabric moving path between the first flanging piece and one of the supporting pieces;

the fabric position detector is electrically connected with the first deviation correcting wheel and the second deviation correcting wheel, the first deviation correcting wheel is used for adjusting the length of the fabric entering the first folding edge channel, and the second deviation correcting wheel is used for adjusting the length of the fabric entering the second folding edge channel.

6. The fabric loop seam apparatus of claim 5, wherein the sewing needle in the sewing mechanism is disposed on a side of the hemming mechanism away from the first deviation correcting wheel and the second deviation correcting wheel.

7. The fabric loop sewing device of claim 1, further comprising a mark placing mechanism, wherein the mark placing mechanism comprises a mark clamping member and a clamping driving member, wherein the mark clamping member is positioned between the first hemming member and one of the supporting members, the mark clamping member is used for clamping marks, and the clamping driving member is used for driving the mark clamping member to press the marks on the hem of the fabric.

8. The fabric loop sewing apparatus of claim 7, further comprising a tab absorbing member disposed below the tab holding member, the tab absorbing member being configured to absorb the tab.

9. The fabric loop sewing apparatus according to any one of claims 1 to 8, wherein the first hemming member includes a first stopper plate, a second stopper plate, and a third stopper plate that are sequentially provided at intervals in the third direction, the second stopper plate having a length shorter than that of the first stopper plate and that of the third stopper plate;

the first edge folding channel is arranged between the first limiting plate and the second limiting plate, the accommodating groove is arranged between the second limiting plate and the third limiting plate, and the edge folding working area is arranged in an area between the first limiting plate and the third limiting plate, which is not provided with the second limiting plate.

10. The fabric loop seam apparatus of claim 9, wherein the first hemming member further includes a first connecting plate, a second connecting plate, and a third connecting plate that are sequentially disposed at intervals, a head end of the first limiting plate in the first direction and a head end of the third limiting plate in the first direction are connected by the first connecting plate, a tail end of the second limiting plate in the first direction and a tail end of the third limiting plate in the first direction are connected by the second connecting plate, and the third connecting plate is connected to a tail end of the first limiting plate in the first direction.

11. The fabric loop sewing apparatus of claim 9 wherein the first hemming member further includes at least one side barrier disposed between the second and third limiting plates and connected to a side of the second limiting plate in the second direction and a side of the third limiting plate in the second direction.

12. The fabric loop seam apparatus of any of claims 1-8 and 9-11, wherein the second hemming member includes a fourth limiting plate and a fifth limiting plate disposed at intervals in the third direction, the fourth limiting plate and the fifth limiting plate being disposed between the first limiting plate and the third limiting plate, the fourth limiting plate and the fifth limiting plate being provided with the second hemming channel therebetween.

13. The fabric loop seam apparatus of claim 12 wherein the second hemming member further includes a fourth web, the trailing end of the fourth restraining plate in the first direction and the trailing end of the fifth restraining plate in the first direction being connected by the fourth web, the fourth web being positioned between the first web and the second web.

14. The fabric loop seam apparatus of any of claims 1 to 8, 9 to 11 and 13, wherein the hemming mechanism further comprises a hemming drive member for driving movement of the second hemming member.

15. The fabric loop sewing apparatus of claim 14 wherein the hemming mechanism further includes a hemming rotating member for rotating the first and second hemming members about the second direction.

16. The fabric loop sewing apparatus of claim 15 wherein the hemming drive includes a drive member, a guide member and a connecting member, the drive member being disposed on the guide member and movable along the guide member, the drive member being connected to the second hemming member by the connecting member;

the first flanging piece is fixedly connected to the guide component, the flanging rotating piece comprises a rotating shaft and an operating handle, the flanging guide piece is rotatably connected to the rotating shaft, and the operating handle is connected to the flanging guide component.

17. The fabric loop sewing method is characterized by comprising the following steps of:

Placing the second hemming member in the work area of the hemming member in the first hemming member using the fabric-opening sewing device of any of claims 1 to 16;

sleeving the fabric on the two supporting pieces, guiding the edge of the fabric to enter the first folding channel, and guiding the edge of the fabric to enter the second folding channel from the first folding channel to form a folded edge;

moving the fabric such that an edge of the fabric continuously passes through both side openings of the first hemming member and both side openings of the second hemming member in a second direction while sewing the hem to a main body portion of the fabric to form a loop; the method comprises the steps of,

and controlling the second flanging piece to enter the flanging piece accommodating groove, and controlling the fabric to exit the first flanging channel.

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