CN220352373U - Hemming adjusting device and sewing machine assembly - Google Patents

Abstract

The present utility model relates to a hemming adjustment device and a sewing machine assembly. The hemming adjusting device comprises a mounting assembly, a hemming assembly and an adjusting assembly, wherein the mounting assembly comprises a mounting body, the mounting body is provided with a first hemming part and a conveying cavity, and the first hemming part is used for performing first hemming treatment on the cloth; the crimping assembly comprises a crimping piece arranged on the mounting body, a supporting piece arranged corresponding to the crimping piece and a connecting piece fixedly connected with the crimping piece and the supporting piece respectively, wherein the crimping piece is provided with a second crimping part, and the distance between the inner wall of the second crimping part and the side wall of the supporting piece, which is close to one side of the crimping piece, is a fixed distance; the adjusting component is arranged on the mounting body and is in driving connection with the hemming member. The distance between the second hemming part and the supporting piece is kept consistent, the distance between the hemming piece and the supporting piece is not required to be adjusted for multiple times, and the production efficiency is high.

Description

Hemming adjusting device and sewing machine assembly

Technical Field

The utility model relates to the technical field of sewing equipment, in particular to a hemming adjusting device and a sewing machine assembly.

Background

Along with the continuous improvement of labor cost and the continuous improvement of the requirement of the sewing machine for removing skills, the current sewing machine is forward automatically and rapidly advanced. In the prior art, an automatic bag opening hemming machine is used for carrying out the operations of transporting, hemming and sewing on cloth to manufacture a bag. And the width of the back pocket hemming needs to be adjusted due to the different size and process requirements of each garment.

In the conventional art, the current hemming width adjusting device adjusts the size of the hemming of the garment by adjusting the distance between the hemming member and the support member.

However, in the current hemming width adjusting device, in the process of hemming adjustment, the distance between the hemming member and the supporting member is changed, so that the distance between the hemming member and the supporting member needs to be re-adjusted after the hemming size of the cloth is adjusted each time, and the problem that the production efficiency is affected due to longer adjustment time exists.

Disclosure of Invention

Based on this, it is necessary to provide a hemming adjusting device and a sewing machine assembly, in which the hemming member is fixedly connected with the supporting member, and the distance between the inner wall of the second hemming portion and the side wall of the supporting member, which is close to the hemming member, is kept consistent, and the distance between the hemming member and the supporting member is not required to be adjusted for a plurality of times, so that the production efficiency is high.

The embodiment of the disclosure provides a hemming adjusting device for hemming a cloth, comprising:

a mounting assembly including a mounting body having a first hemming section for performing a first hemming process on the cloth and a transfer chamber for receiving the cloth through the first hemming process;

the hemming assembly comprises a hemming member arranged on the installation body, a supporting member arranged corresponding to the hemming member and a connecting member fixedly connected with the hemming member and the supporting member respectively, the hemming member is provided with a second hemming portion, the second hemming portion is used for rolling the cloth subjected to the first hemming treatment to the supporting member so as to carry out the second hemming treatment on the cloth, and the distance between the inner wall of the second hemming portion and the side wall of the supporting member, which is close to one side of the hemming member, is a fixed distance, so that the cloth is lapped on the supporting member; and

the adjusting component is arranged on the mounting body and is in driving connection with the hemming piece, and is used for driving the hemming piece to move along the width direction of the conveying cavity so as to adjust the hemming width of the cloth.

The embodiment of the disclosure provides a hemming adjusting device, wherein a first hemming part is used for performing a first hemming treatment on the cloth and guiding the cloth subjected to the first hemming treatment into a conveying cavity. When the cloth is transferred to the hemming member, the second hemming portion rolls the cloth onto the support member to perform a second hemming process of the cloth. The distance between the inner wall of the second hemming portion and the side wall of the support piece, which is close to one side of the hemming piece, can ensure a specific value, so that the debugging time is greatly shortened, the debugging effect is improved, and the product use efficiency and the product stability are improved.

In one embodiment, the fixed distance between the inner wall of the second hemming section and the side wall of the support member on the side close to the hemming member is between 1mm and 8 mm.

The cloth can be guaranteed to be better lapped on the supporting piece in the hemming process, and the cloth is prevented from falling down in the hemming process, so that the hemming effect is prevented from being influenced.

In one embodiment, the mounting body includes a mounting panel and a substrate mounted on the mounting panel, the mounting panel and the substrate are arranged at intervals to form the conveying cavity, and the first curled portion is arranged at one end of the substrate;

the second hemming portion is an arc-shaped groove, the supporting piece is arranged between the notches of the arc-shaped groove, and the shape of one side, close to the arc-shaped groove, of the supporting piece is matched with the arc-shaped groove.

So set up, first turn-up portion sets up in the one end of base plate for carry out first turn-up processing to this cloth, and will be passed through this cloth of first turn-up processing and guide to the conveying intracavity. The second hemming portion is an arc-shaped groove, and the arc-shaped groove is used for rolling the cloth onto the supporting piece so as to realize second hemming treatment of the cloth. Because the support piece is arranged between the notches of the arc-shaped grooves, and the shape of one side, close to the arc-shaped grooves, of the support piece is matched with the arc-shaped grooves, the cloth rolled up by the arc-shaped grooves is conveniently and stably lapped on the support piece.

In one embodiment, the mounting body further has a shaping cavity in communication with the delivery cavity, the shaping cavity being located at the output end of the arcuate slot;

the hemming assembly further comprises an adjusting piece fixedly arranged on the hemming piece and extending to the shaping cavity.

The adjusting piece is fixedly arranged at one end of the hemming piece and extends to the shaping cavity, and the adjusting piece moves synchronously with the hemming piece.

In one embodiment, the distance between the support and the substrate is between 1mm and 4 mm.

So set up, the distance between support piece and the base plate is between 1mm to 4mm, so can guarantee that this cloth can be smooth through, can make the smooth through of this cloth again.

In one embodiment, the adjusting component comprises a driving piece arranged on the mounting body and a linkage mechanism connected with the driving piece and the hemming piece respectively, and the linkage mechanism is used for driving the hemming piece to move along the width direction of the conveying cavity under the driving of the driving piece.

The driving piece is in driving connection with the linkage mechanism, and the driving piece is used for driving the hemming piece to move along the width direction of the conveying cavity through the linkage mechanism so as to adjust the hemming width of the cloth.

In one embodiment, the linkage mechanism comprises a guide rail and a sliding block, the guide rail is arranged on the installation body, one end of the sliding block is in driving connection with the driving piece, and the other end of the sliding block is in sliding connection with the guide rail.

So set up, the driving piece passes through slider and guide rail structure, and the hemming piece removal is driven steadily and smoothly.

In one embodiment, the linkage mechanism further comprises a gear installed at the output end of the driving piece and a rack meshed with the gear, and the rack is installed on the sliding block.

The rack is arranged on the sliding block and meshed with the gear, and when the driving piece drives the gear to rotate, the gear drives the rack and the sliding block connected with the rack to synchronously move.

In one embodiment, the linkage mechanism further comprises a fixing seat installed on the installation body, a measuring piece installed on the fixing seat, and a driving check ring respectively connected with the measuring piece and the sliding block.

So set up, when manual rotation measuring piece, the drive retaining ring drives the slider and removes to drive crimping piece and remove along the width direction of carrying the chamber, measuring piece can measure the removal size of crimping piece simultaneously, survey the crimping width adjustment range of cloth.

According to another aspect of the present application, there is further provided a sewing machine assembly comprising:

a sewing machine; and

the hemming adjustment apparatus of any of the preceding claims, wherein the hemming adjustment apparatus is mounted to the sewing machine.

So set up, turn-up adjusting device installs on sewing machine for adjust this cloth turn-up width dimension, adjust effectually.

Drawings

FIG. 1 is a perspective view of a hemming adjustment apparatus of the present utility model;

FIG. 2 is a perspective view of the hemming adjustment apparatus of FIG. 1 with a cover removed;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic view of the self-adjusting mechanism of FIG. 2;

FIG. 5 is a schematic view of the manual adjustment of FIG. 2;

fig. 6 is a cross-sectional view of the assembly of the hemming member and the supporting member of fig. 2.

Reference numerals illustrate:

10. a mounting assembly; 11. installing a panel; 12. a substrate; 121. a first hemming section; 13. a cover plate; 14. a delivery chamber; 15. a cavity is fixed; 20. a hemming assembly; 21. a hemming member; 211. a second curled portion; 22. a support; 23. a connecting piece; 24. an adjusting member; 30. an adjustment assembly; 31. a driving member; 32. a guide rail; 33. a slide block; 34. a gear; 35. a rack; 36. a fixing seat; 37. a measuring member; 38. and driving the retainer ring.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 6, the present utility model provides a hemming adjusting apparatus for hemming a cloth, comprising a mounting assembly 10, a hemming assembly 20 and an adjusting assembly 30, wherein the mounting assembly 10 comprises a mounting body having a first hemming portion 121 and a conveying chamber 14, the first hemming portion 121 is used for performing a first hemming process on the cloth, and the conveying chamber 14 is used for accommodating the cloth subjected to the first hemming process; the hemming assembly 20 includes a hemming member 21 installed to the installation body, a support member 22 provided corresponding to the hemming member 21, and a connection member 23 fixedly connected to the hemming member 21 and the support member 22, respectively, the hemming member 21 having a second hemming portion 211, the second hemming portion 211 for rolling the cloth subjected to the first hemming process to the support member 22 so as to perform the second hemming process on the cloth, the distance between an inner wall of the second hemming portion 211 and a side wall of the support member 22 adjacent to the hemming member 21 being a fixed distance for overlapping the cloth on the support member 22; the adjusting assembly 30 is installed at the bottom of the installation body and is in driving connection with the hemming member 21 for driving the hemming member 21 to move along the width direction of the transfer chamber 14 to adjust the hemming width of the cloth.

The embodiment of the present disclosure provides a hemming adjusting device, in which the first hemming section 121 is used to perform a first hemming process on the cloth and guide the cloth subjected to the first hemming process into the conveying chamber 14. When the cloth is transferred to the hemming member 21, the second hemming portion 211 rolls the cloth onto the support member 22 to perform a second hemming process of the cloth.

The distance between the inner wall of the second hemming portion 211 and the side wall of the support 22 near the hemming member 21 side can secure a specific value, greatly shortens the debugging time, improves the debugging effect, and thus improves the product use efficiency and the product stability.

The adjusting assembly 30 is installed at the bottom wall of the installation body and connected with the hemming member 21 for driving the hemming member 21 to move along the width direction of the transfer chamber 14 so as to achieve the adjustment of the hemming width of the cloth.

Further, a fixed interval between the inner wall of the second hemming portion 211 and the side wall of the support 22 on the side close to the hemming member 21 is between 1mm and 8 mm. So can guarantee that this cloth can take on support piece better at the in-process of turn-up, avoid this cloth to fall down in the turn-up in-process, influence the turn-up effect.

Referring to fig. 1, 2 and 6, specifically, the mounting body includes a mounting panel 11, a base plate 12 and a cover plate 13 mounted on the mounting panel 11, the cover plate 13 is mounted on the mounting panel 11, the base plate 12 is mounted under the mounting panel 11, the mounting panel 11 and the base plate 12 are spaced apart to form a conveying cavity 14, and the first curled portion 121 is disposed at one end of the base plate 12.

In this embodiment, the second curled portion 211 is preferably an arc-shaped groove, the supporting member 22 is disposed between the notches of the arc-shaped groove, and the shape of the supporting member 22 near one side of the arc-shaped groove matches with the arc-shaped groove.

Specifically, a first hemming section 121 is provided at one end of the base plate 12 for performing a first hemming process on the cloth and guiding the cloth subjected to the first hemming process into the conveying chamber 14. The second hemming portion 211 is an arc-shaped groove for winding the cloth onto the support 22 to perform a second hemming process of the cloth. Since the support 22 is disposed between the notches of the arc-shaped grooves, and the shape of the side of the support 22 close to the arc-shaped grooves is matched with the arc-shaped grooves, the cloth rolled up by the arc-shaped grooves can be conveniently and smoothly put on the support 22.

In other words, the distance between the inner wall of the arc-shaped groove and the side wall of the support 22 on the side close to the arc-shaped groove is between 1mm and 8 mm. As indicated by L in fig. 6.

The specific value can be guaranteed to the distance between the inner wall of arc wall and the lateral wall that support piece 22 is close to arc wall one side, has shortened the debugging time greatly, has improved the debugging effect to improve product availability factor and product stability.

Specifically, the cloth which is subjected to the second hemming treatment through the arc-shaped groove cannot be overlapped on the supporting member 22 due to the overlarge distance between the cloth and the supporting member, and the cloth leakage is avoided. It is also desirable to avoid too small a distance between the two, and too small a distance between the support members 22 would interfere with the arcuate slot and thereby affect the secondary crimping effect of the arcuate slot.

The existing arc-shaped groove has a different distance between the inner wall of the arc-shaped groove and the side wall of the supporting piece 22, which is close to one side of the arc-shaped groove, so that the curling cannot be well realized, the curling is easy to pleat, and the qualification rate of products is reduced.

In this embodiment, the connecting member 23 is fixedly connected to the hemming member 21 and the supporting member 22, respectively. Specifically, the connector 23 connects the hemming member 21 and the support member 22 together, and when the adjustment assembly 30 drives the hemming member 21 to move in the width direction of the conveying chamber 14, the support member 22 moves synchronously with the hemming member 21. Therefore, the distance between the supporting piece 22 and the hemming piece 21 is not changed along with the change of the hemming width of the cloth, so that the cloth is always formed in a uniform channel in the hemming forming process, and the stability of the hemming of the cloth is improved.

In order to adjust the hemmer of the bag mouth hemming machine in the market at present, the hemmer device needs to be detached from the machine, the hemmer upper cover plate 13 and the hemmer lower cover plate 13 are detached, the hemmer guide block and the hemmer size adjusting plate are loosened to adjust the hemmer guide block and the hemmer size adjusting plate, the hemmer guide block and the hemmer size adjusting plate are adjusted to corresponding widths through calipers, then the hemmer upper cover plate 13 and the hemmer lower cover plate 13 are restored, and the hemmer is installed back to the machine. After the seam test is performed, the size of the rear pocket is measured, the hemmer can meet the requirements after being adjusted for several times, and the steps are complicated.

In this embodiment, because the space at the bottom of the installation body is larger, the adjusting component 30 is installed at the bottom of the installation body, and the layout is reasonable and the structure is compact. Meanwhile, the adjusting component 30 is arranged at the bottom of the installation body and does not interfere with other structures of the installation component 10, so that the installation and the removal of the adjusting component are more convenient.

Referring to fig. 4 and 5, in some embodiments, the adjusting assembly 30 includes a driving member 31 disposed at the bottom of the mounting body and a linkage mechanism connected to the driving member 31 and the hemming member 21, respectively, and the linkage mechanism is driven by the driving member 31 to drive the hemming member 21 to move along the width direction of the conveying cavity 14. So configured, the driving member 31 is in driving connection with the linkage mechanism for driving the hemming member 21 to move along the width direction of the conveying chamber 14 by the linkage mechanism to achieve adjustment of the hemming width of the cloth. In this embodiment, the driving member 31 is preferably a gear motor, and a small motor can provide a larger torque and can save space.

Further, in some embodiments, the adjustment assembly 30 may also be electrically connected to an external operating screen, and the hemming member 21 may be automatically adjusted without removing the hemming member 21, and only by confirming a desired hemming width on the operating screen.

Preferably, the linkage mechanism comprises a guide rail 32 and a sliding block 33, the guide rail 32 is arranged at the bottom of the installation body, one end of the sliding block 33 is in driving connection with the driving piece 31, and the other end of the sliding block 33 is in sliding connection with the guide rail 32. In this way, the driving member 31 smoothly and smoothly drives the hemming member 21 to move by the slider 33 and rail 32 structure.

Alternatively, the adjusting assembly 30 may also adopt an adjusting mode of driving the slider 33 by a cylinder, an adjusting mode of driving the slider 33 to move by a motor through a screw rod, a manual adjusting mode, and the like, so long as the hemming member 21 can be driven to move.

Specifically, fig. 4 shows an embodiment of automatic adjustment, the linkage mechanism further includes a gear 34 mounted on the output end of the driving member 31 and a rack 35 engaged with the gear 34, and the rack 35 is mounted on the slider 33. Since the rack 35 is mounted on the slider 33 and engaged with the gear 34, when the driving member 31 drives the gear 34 to rotate, the gear 34 drives the rack 35 and the slider 33 connected with the rack 35 to move synchronously. In addition, due to the adoption of the linkage mode of meshing the gear 34 and the rack 35, the driving piece 31 and the gear 34 connected with the driving piece 31 in a driving way can be arranged along the length direction of the bottom of the installation body, and the installation device is reasonable in layout and compact in structure.

Fig. 5 shows an embodiment of manual adjustment, the linkage further comprising a fixed seat 36 mounted to the mounting body, a measuring member 37 mounted to the fixed seat 36, and a driving collar 38 connected to the measuring member 37 and the slider 33, respectively.

When the measuring piece 37 is manually rotated, the driving retainer ring 38 drives the sliding block 33 to move along the guide rail 32 under the driving of the measuring piece 37, so as to drive the hemming piece 21 to move along the width direction of the conveying cavity 14, and meanwhile, the measuring piece 37 can measure the moving size of the hemming piece 21 and observe the hemming width adjusting range of the cloth. In this embodiment, the measuring member 37 is preferably, but not limited to, a micrometer.

Referring to fig. 1 to 6, in some embodiments, the mounting body further includes a shaping cavity 15 in communication with the conveying cavity 14, and the shaping cavity 15 is located at an output end of the arc-shaped slot; the hemming assembly 20 further includes an adjustment member 24, the adjustment member 24 being secured to the hemming member 21 and extending to the shaping cavity 15.

Specifically, the adjusting member 24 is fixed to one end of the hemming member 21 and extends to the setting chamber 15, and the cloth, which is subjected to the second hemming process by the arc-shaped groove, is continuously moved to be in contact with the adjusting member 24, and finally, setting is achieved in the setting chamber.

In addition, since the adjusting member 24 is fixedly mounted on the hemming member 21, the adjusting member 24 moves synchronously with the hemming member 21, and when the adjusting member 30 drives the hemming member 21 to move, the hemming member 21 can move synchronously with the supporting member 22 and the adjusting member 24, and only one adjustment is needed, without additionally adjusting the distance between the hemming member 21 and the supporting member 22.

Further, the distance between the support 22 and the substrate 12 is between 1mm and 4 mm. Thus, the cloth can be ensured to pass smoothly and can pass smoothly.

According to another aspect of the present application, there is further provided a sewing machine assembly comprising a sewing machine and a hemming adjustment device as defined in any one of the preceding claims, the hemming adjustment device being mounted to the sewing machine.

Specifically, the hemming adjusting device is arranged on the sewing machine and used for adjusting the hemming width of the cloth, and the adjusting effect is good. It is known that when the sizing groove shapes the cloth, the sewing machine can sew the cloth, and the sewing effect is good.

Compared with the prior art, when the position to be sewn is changed, the sewing machine needs to repeatedly correspond to the machine head of the sewing machine, and more time is wasted. In this embodiment, sewing machine's aircraft nose can remove in order to be close to or keep away from this cloth, simultaneously because hemming adjusting device also can adjust the hemming width of this cloth for sewing machine's sewing position and this cloth wait to sew the position and all can adjust, and adaptability is good, can guarantee the sewing precision.

The embodiment can also be set through a PLC, after the hemming dimension is set on the operation screen, automatic hemming adjustment is realized, meanwhile, the hemming width can be adjusted steplessly, and the device is continuous and controllable and high in accuracy. The hemming width adjustment of the cloth and the relative position of the sewing machine head and the hemming amount control of the cloth can be matched with each other and can also be controlled independently, and one-key replacement can be realized according to the requirement.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described 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 above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. 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 utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A hemming conditioning apparatus for hemming a cloth, comprising:

-a mounting assembly (10), the mounting assembly (10) comprising a mounting body having a first hemming section (121) for subjecting the cloth to a first hemming process and a delivery chamber (14) for receiving the cloth via the first hemming process;

the hemming assembly (20), the hemming assembly (20) comprises a hemming member (21) arranged on the installation body, a supporting member (22) arranged corresponding to the hemming member (21) and a connecting member (23) fixedly connected with the hemming member (21) and the supporting member (22) respectively, the hemming member (21) is provided with a second hemming part (211), the second hemming part (211) is used for rolling the cloth subjected to the first hemming treatment to the supporting member (22) so as to carry out the second hemming treatment on the cloth, and the distance between the inner wall of the second hemming part (211) and the side wall of the supporting member (22) close to one side of the hemming member (21) is a fixed interval, so that the cloth is lapped on the supporting member (22); and

the adjusting component (30) is arranged on the mounting body and is in driving connection with the hemming piece (21), and the adjusting component (30) is used for driving the hemming piece (21) to move along the width direction of the conveying cavity (14) so as to adjust the hemming width of the cloth.

2. The curl adjustment device according to claim 1, characterized in that a fixed distance between the inner wall of the second curled portion (211) and the side wall of the support member (22) on the side close to the curled member (21) is between 1mm and 8 mm.

3. The hemming adjustment apparatus according to claim 1, wherein the mounting body includes a mounting panel (11) and a base plate (12) mounted to the mounting panel (11), the mounting panel (11) and the base plate (12) are disposed at a distance to form the conveying chamber (14), and the first hemming portion (121) is disposed at one end of the base plate (12);

the second hemming portion (211) is an arc-shaped groove, the supporting piece (22) is arranged between the notches of the arc-shaped groove, and the shape of one side, close to the arc-shaped groove, of the supporting piece (22) is matched with the arc-shaped groove.

4. A hemming adjustment device according to claim 3, wherein the mounting body further has a styling cavity (15) communicating with the conveying cavity (14), the styling cavity (15) being located at the output end of the arcuate slot;

the hemming assembly (20) further comprises an adjusting member (24), and the adjusting member (24) is fixedly arranged on the hemming member (21) and extends to the shaping cavity (15).

5. A curl adjustment device according to claim 3, characterized in that the distance between the support (22) and the base plate (12) is between 1mm and 4 mm.

6. The hemming adjustment apparatus according to any one of claims 1 to 5, wherein the adjustment assembly (30) includes a driving member (31) mounted to the mounting body and a linkage mechanism connected to the driving member (31) and the hemming member (21), respectively, and the linkage mechanism is configured to drive the hemming member (21) to move along the width direction of the conveying chamber (14) under the driving of the driving member (31).

7. The hemming adjustment apparatus according to claim 6, wherein the linkage mechanism includes a guide rail (32) and a slider (33), the guide rail (32) is mounted to the mounting body, one end of the slider (33) is drivingly connected to the driving member (31), and the other end of the slider (33) is slidably connected to the guide rail (32).

8. The curl adjustment device according to claim 7, characterized in that the linkage further comprises a gear (34) mounted at the output end of the driving member (31) and a rack (35) meshed with the gear (34), the rack (35) being mounted to the slider (33).

9. The hemming adjustment apparatus according to claim 7, wherein the linkage mechanism further includes a fixing base (36) mounted to the mounting body, a measuring member (37) mounted to the fixing base (36), and a driving collar (38) connected to the measuring member (37) and the slider (33), respectively.

10. A sewing machine assembly, comprising:

a sewing machine; and

the hemming adjustment apparatus of any of claims 1 to 9, which is mounted to the sewing machine.