Elastic waistband gusseting device

By designing the support rollers and transmission rollers of the elastic waistband support device, the problem of irregular waistband sewing in trousers was solved, achieving regular rotating sewing of the waistband and improving its aesthetics.

CN116657337BActive Publication Date: 2026-02-13HEBEI BENFA GARMENT CO LTD
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Patent Information

Application Number
CN202310651619.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-02
Publication Date
2026-02-13
Estimated Expiration
2043-06-02

AI Technical Summary

Technical Problem

In existing technology, the sewing loops on the waistbands of pants are skewed due to inconsistent sizes and human rotation errors, which reduces the aesthetics.

Method used

The device employs an elastic waistband support mechanism, which includes an installation strip, a support component, and a telescopic transmission assembly. Through the cooperation of the support roller and the transmission roller, the waistband can be rotated and sewn in a regular manner.

Benefits of technology

It improves the aesthetics of the waistband sewing, ensures regular waistband rotation, and reduces human error.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides an elastic waistband waist supporting and opening device, which comprises a mounting strip, two supporting pieces and a telescopic transmission assembly. The mounting strip is arranged on the top of a table. The two supporting pieces are symmetrically arranged on the two sides of the supporting table and are slidably connected to the mounting strip along the direction of the mounting strip. Rollers are rotatably connected to the two supporting pieces. A first telescopic piece is arranged on the table and located on one side of the mounting strip. The first telescopic piece has two telescopic rods which are reversely extended and are one-to-one connected with the two supporting pieces. The two telescopic rods can drive the two supporting pieces to move away from each other so that the rollers support and open the waist. The lower end of the telescopic transmission assembly is rotatably connected with a transmission roller for driving the waist to rotate around the roller. The telescopic transmission assembly can drive the transmission roller to move downward to press the waist on the supporting table. The elastic waistband waist supporting and opening device can make the waist regularly rotate for sewing and improve the overall appearance.
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Description

Technical Field

[0001] This invention belongs to the field of garment processing technology, and more specifically, relates to an elastic waistband support device. Background Technology

[0002] Trousers, also known as pants, are a general term for clothing worn below the waist. They are typically made of a waistband, crotch, and two legs sewn together. Depending on the material, style, and intended wearer, they can be categorized in various ways. The waistband usually requires an elastic band, which is then sewn onto the waistband using a sewing machine.

[0003] In the existing technology, when sewing elastic bands onto the waistband of pants, the waistband needs to be placed on the support table of the sewing machine first, and then the waistband is sewed by manually rotating it circumferentially. Since the waistbands of different pants are of different sizes, larger pants cannot have the waistband tightly wrapped around the support table, and manual rotation will also cause errors, so the waistband cannot rotate and sew regularly, resulting in the finished stitches being crooked and reducing the overall aesthetics. Summary of the Invention

[0004] This invention provides an elastic waistband support device that allows the waistband to rotate regularly during sewing, improving the overall aesthetics.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A rubber band waistband support device is provided, comprising an installation strip, two support members, and a telescopic transmission assembly. The installation strip is disposed on the top of a table and supported below a support platform. The two support members are slidably connected to the installation strip along its direction and are symmetrically disposed on both sides of the support platform. Each support member is rotatably connected to a horizontally extending support roller perpendicular to the direction of the installation strip, used to open the waistband. The support roller is located on the side of the installation strip away from the machine body. A first telescopic member is disposed on one side of the installation strip on the table. The first telescopic member has two telescopic rods extending in opposite directions and correspondingly connected to the two support members. The two telescopic rods can drive the two support members to move away from each other so that the support rollers open the waistband. The telescopic transmission assembly is connected to the machine body and extends downwards. The telescopic transmission assembly corresponds vertically to the support platform. The lower end of the telescopic transmission assembly is rotatably connected to a transmission roller for driving the waistband to rotate around the support roller. The main shaft of the transmission roller is perpendicular to the direction of the installation strip. The telescopic transmission assembly can drive the transmission roller to move downwards to press the waistband against the support platform.

[0006] In one possible implementation, the support includes a slide plate and an extension strip, the slide plate being slidably connected to the mounting strip along the direction of the mounting strip; the extension strip is connected to the slide plate and extends upward, and the support roller is rotatably connected to the extension strip.

[0007] In some embodiments, an adjustment cavity is provided through the extension strip, the adjustment cavity extends along the length direction of the extension strip, the support roller includes an adjustment rod provided through the adjustment cavity and a rotating sleeve sleeved on the outer periphery of the adjustment rod, the adjustment rod is slidably engaged with the adjustment cavity, the rotating sleeve is located on one side of the extension strip and is rotatably connected to the adjustment rod, and locking nuts located on both sides of the extension strip are threaded on the adjustment rod to lock the adjustment rod.

[0008] In some embodiments, a pressure bar is provided above the support platform and slidably connected to the end of the adjusting rod. The pressure bar and the rotating sleeve are located on both sides of the extension bar. The extension bar is rotatably connected to the slide plate. The slide plate is provided with an elastic pushing member that can elastically push the extension bar to swing vertically towards the side of the machine body. The side of the telescopic transmission assembly is provided with a pressing member for pressing down the pressure bar and making the two extension bars swing back to back to support the waist head.

[0009] In some embodiments, the elastic pusher includes a slider, a hinge rod, and an elastic element. The slider is slidably connected to the top surface of the slide plate along the direction of the mounting strip. The hinge rod is disposed between the slider and the extension strip, and its two ends are hinged to the extension strip and the slider, respectively. The elastic element is connected to the top of the slide plate and to the slider, and is used to elastically push the slider towards the extension strip.

[0010] In some embodiments, the lower pressing member is a rack extending in the vertical direction, and the pressing strip is provided with a cooperating member that engages with the lower pressing member to drive the pressing strip to move up and down. The top of the support platform is provided with a guide strip that extends upward through the pressing strip and slides with the pressing strip. The cooperating member includes a rotating shaft, a gear, and a torsion spring. The rotating shaft is rotatably connected to the side of the pressing strip in the horizontal direction. The gear is sleeved on the rotating shaft and can mesh with the rack. The torsion spring is sleeved on the rotating shaft, with one end of the torsion spring connected to the gear and the other end connected to the pressing strip. The rack can follow the telescopic transmission component to move down to mesh with the gear to drive the gear to rotate and cause the pressing strip to move down.

[0011] In some embodiments, the slide plate is further provided with a horizontally extending limiting strip located on the side of the extension strip, the limiting strip being able to abut against the side wall of the extension strip to limit the swing amplitude of the extension strip.

[0012] In some embodiments, the pressure strip is provided with a horizontally penetrating sliding cavity that extends along the length of the pressure strip, and the adjusting rod is slidably connected to the sliding cavity.

[0013] In some embodiments, the outer peripheral wall of the adjusting rod is provided with two limiting platforms that protrude outward and are located on both sides of the pressure strip. The limiting platforms are used to contact and cooperate with the side wall of the pressure strip to limit the axial position of the adjusting rod and the pressure strip.

[0014] In one possible implementation, the telescopic transmission assembly includes a second telescopic member and a mounting base. The second telescopic member is connected to the body and extends downward. The mounting base is connected to the lower end of the second telescopic member, and a transmission roller is rotatably connected to the lower part of the mounting base. One end of the transmission roller is connected to a rotary drive member.

[0015] Compared with the prior art, the elastic waistband support device provided in this embodiment first places the waistband of the pants on the support platform and two support rollers, extends the first telescopic member, and moves the two support members in opposite directions to support the waistband. Then, the telescopic transmission assembly is activated to move downward, so that the transmission roller presses the waistband down onto the support platform. The transmission roller rotates to drive the waistband to rotate around the support platform and support rollers, and the stitching needle sews the waistband. This allows the waistband to rotate regularly for sewing, improving the overall aesthetics. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the elastic waistband support device provided in an embodiment of the present invention in use;

[0018] Figure 2 This is an embodiment of the present invention. Figure 1 A magnified schematic diagram of the local structure at point I;

[0019] Figure 3 This is an embodiment of the present invention. Figure 1 A magnified schematic diagram of the local structure at point II;

[0020] Figure 4 A structural schematic diagram from another perspective of the elastic waistband support device provided in an embodiment of the present invention in use;

[0021] Figure 5 This is an embodiment of the present invention. Figure 4 A magnified schematic diagram of the local structure at point III;

[0022] Figure 6 This is an embodiment of the present invention. Figure 4 A magnified schematic diagram of the structure at point IV.

[0023] The following are the labeling elements in the figure:

[0024] 1. Table; 2. Machine body; 3. Support platform; 4. Sewing needle; 10. Mounting strip; 20. Support component; 21. Support roller; 211. Rotating sleeve; 212. Adjusting rod; 213. Limiting platform; 22. Slide plate; 221. Limiting strip; 23. Extension strip; 231. Adjusting cavity; 24. Locking nut; 30. First telescopic component; 31. Telescopic rod; 40. Telescopic transmission assembly; 41. Second telescopic component; 42. Rotary drive component; 43. Mounting base; 44. Transmission roller; 50. Pressure strip; 51. Sliding cavity; 60. Elastic pushing component; 61. Slider; 62. Hinge rod; 63. Elastic component; 70. Lower pressing component; 80. Mating component; 81. Rotating shaft; 82. Gear; 83. Torsion spring; 90. Guide strip. Detailed Implementation

[0025] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0027] Please see Figures 1 to 6The elastic band waistband support device provided by the present invention will now be described. The elastic band waistband support device includes an installation strip 10, two support members 20, and a telescopic transmission assembly 40. The installation strip 10 is disposed on the top of the table 1 and supported below the support platform 3. The two support members 20 are slidably connected to the installation strip 10 along its direction and are symmetrically arranged on both sides of the support platform 3. Each support member 20 is rotatably connected to a horizontally extending support roller 21 perpendicular to the direction of the installation strip 10, used to open the waistband. The support roller 21 is located on the side of the installation strip 10 away from the machine body 2. A first telescopic member 3 is provided on one side of the installation strip 10. 0. The first telescopic member 30 has two telescopic rods 31 that extend in opposite directions and are connected to the two support members 20 one by one. The two telescopic rods 31 can drive the two support members 20 to move away from each other so that the support roller 21 supports the waist head. The telescopic transmission assembly 40 is connected to the machine body 2 and extends downward. The telescopic transmission assembly 40 is vertically aligned with the support platform 3. The lower end of the telescopic transmission assembly 40 is rotatably connected to a transmission roller 44 for driving the waist head to rotate around the support roller 21. The main shaft of the transmission roller 44 is perpendicular to the direction of the mounting strip 10. The telescopic transmission assembly 40 can drive the transmission roller 44 to move downward to press the waist head onto the support platform 3.

[0028] This application provides an elastic waistband support device. In actual use, the waistband of the pants is first placed on the support platform 3 and two support rollers 21. The first telescopic member 30 is extended, causing the two support members 20 to move in opposite directions, thereby supporting the waistband. The telescopic transmission assembly 40 is activated to move downward, causing the transmission roller 44 to press the waistband down onto the support platform 3. The transmission roller 44 rotates, causing the waistband to rotate around the support platform 3 and the support rollers 21, and the sewing needle 4 sews the waistband. This allows the waistband to rotate regularly for sewing, improving the overall aesthetics.

[0029] After sewing is completed, the telescopic transmission assembly 40 drives the transmission roller 44 to move upward, and the first telescopic component 30 drives the two support components 20 to move towards each other, thereby releasing the waistband and making it easier for the staff to take off the pants.

[0030] Compared with the prior art, the elastic waistband support device provided in this embodiment first places the waistband of the pants on the support platform 3 and two support rollers 21, extends the first telescopic member 30, and makes the two support members 20 move back to back, thereby supporting the waistband. Then, the telescopic transmission assembly 40 is activated to move downward, so that the transmission roller 44 presses the waistband down onto the support platform 3. The transmission roller 44 rotates to drive the waistband to rotate around the support platform 3 and support rollers 21, and makes the sewing needle 4 sew the waistband. This allows the waistband to rotate regularly for sewing, improving the overall aesthetics.

[0031] In one possible implementation, the aforementioned support member 20 adopts, as shown in... Figure 1 , Figure 2 , Figure 4 and Figure 5 The structure shown is described in the following document. Figure 1 , Figure 2 , Figure 4 and Figure 5 The support member 20 includes a slide plate 22 and an extension strip 23. The slide plate 22 is slidably connected to the mounting strip 10 along the direction of the mounting strip 10. The extension strip 23 is connected to the slide plate 22 and extends upward. The support roller 21 is rotatably connected to the extension strip 23.

[0032] Specifically, both support rollers 21 are located on the same side of the device, and the sliding plate 22 facilitates the overall adjustment along the length of the mounting strip 10. The extension strip 23 is used to install the support rollers 21, ensuring that the support rollers 21 are installed at a suitable height, so that the waist head can rotate stably in the best condition.

[0033] In some embodiments, Figure 1 , Figure 2 , Figure 4 and Figure 5 An adjustment cavity 231 is provided through the extension bar 23. The adjustment cavity 231 extends along the length direction of the extension bar 23. The support roller 21 includes an adjustment rod 212 that passes through the adjustment cavity 231 and a rotating sleeve 211 that is sleeved on the outer periphery of the adjustment rod 212. The adjustment rod 212 is slidably engaged with the adjustment cavity 231. The rotating sleeve 211 is located on one side of the extension bar 23 and is rotatably connected to the adjustment rod 212. Locking nuts 24 are threaded on the adjustment rod 212 and are located on both sides of the extension bar 23 to lock the adjustment rod 212.

[0034] Specifically, the adjusting rod 212 can slide within the adjusting cavity 231 to adjust its position on the extension bar 23. The height of the adjusting rod 212 can be adjusted according to the height of the top surface of the support platform 3, so that the top of the rotating sleeve 211 is flush with the top surface of the support platform 3, thereby placing the waist head in the optimal position.

[0035] When it is necessary to adjust the adjusting rod 212, simply loosen the two locking nuts 24 to release the locking of the adjusting rod 212 and adjust the adjusting rod 212. After the adjustment is completed, tighten the two locking nuts 24 and abut them against the side wall of the extension strip 23 respectively, thereby locking the position of the adjusting rod 212 and improving the convenience of adjusting the position of the rotating sleeve 211.

[0036] The rotating sleeve 211 is rotatably connected to the adjusting rod 212, which facilitates the rotation and guidance of the waist head.

[0037] In some embodiments, see Figures 1 to 6Above the support platform 3, there is a pressure strip 50 that is slidably connected to the end of the adjusting rod 212. The pressure strip 50 and the rotating sleeve 211 are located on both sides of the extension strip 23. The extension strip 23 is rotatably connected to the slide plate 22. The slide plate 22 is provided with an elastic pushing member 60 that can elastically push the extension strip 23 to swing vertically towards the side of the machine body 2. The side of the telescopic transmission assembly 40 is provided with a pressing member 70 for pressing down the pressure strip 50 and making the two extension strips 23 swing back to back to support the waist head.

[0038] Specifically, before use, the first telescopic component 30 drives the two support components 20 to move in opposite directions to a suitable position. The waistband of the pants is then placed on the support platform 3 and the two support rollers 21. The telescopic transmission component 40 is activated to move downward, causing the transmission roller 44 to press the waistband onto the support platform 3. During the downward movement of the telescopic transmission component 40, the pressing component 70 is driven to press down the pressing strip 50. As the pressing strip 50 moves downward, it squeezes the two extension strips 23 to swing in opposite directions, causing the rotating sleeve 211 to tighten the waistband. After the transmission roller 44 presses the waistband onto the support platform 3, the top of the rotating sleeve 211 is flush with the top surface of the support platform 3, thus placing the waistband in the optimal position. The transmission roller 44 rotates, causing the waistband to rotate around the support platform 3 and the support rollers 21, and the sewing needle 4 sews the waistband. This allows the waistband to rotate regularly for sewing, improving the overall aesthetics.

[0039] After sewing is completed, the telescopic transmission assembly 40 moves upward, releasing the restriction on the pressure strip 50. As a result, the two elastic pushers 60 push the two extension strips 23 to swing towards each other and return to the initial state (the initial state is when the extension strips 23 extend outward and upward). The pressure strip 50 also moves upward, so that this device can accommodate support platforms 3 of different heights, improving its practicality.

[0040] In some embodiments, see Figure 2 and Figure 5 The elastic pusher 60 includes a slider 61, a hinge rod 62, and an elastic member 63. The slider 61 is slidably connected to the top surface of the slide plate 22 along the direction of the mounting strip 10. The hinge rod 62 is disposed between the slider 61 and the extension strip 23, and the two ends of the hinge rod 62 are hinged to the extension strip 23 and the slider 61, respectively. The elastic member 63 is connected to the top of the slide plate 22 and connected to the slider 61, and is used to elastically push the slider 61 towards the side of the extension strip 23.

[0041] Specifically, as the drive roller 44 moves downward, the pressure bar 50 moves downward, and the two extension bars 23 swing in opposite directions, thereby causing the hinge rod 62 to push the slider 61 to compress the elastic element 63.

[0042] As the drive roller 44 moves upward, the restriction on the pressure bar 50 is released, the compressed elastic element 63 returns to its initial state, and the push slider 61 moves towards the center of the mounting bar 10, thereby causing the hinge rod 62 to push the extension bar 23 upward, causing the extension bar 23 to swing towards a more vertical position. This allows the device to accommodate support platforms 3 of different heights, improving its practicality.

[0043] In some embodiments, see Figure 1 , Figure 3 , Figure 4 and Figure 6 The lower pressing member 70 is a rack extending in the vertical direction. The pressing strip 50 is provided with a cooperating member 80 that cooperates with the lower pressing member 70 to drive the pressing strip 50 to move up and down. The top of the support platform 3 is provided with a guide strip 90 that extends upward through the pressing strip 50 and slides with the pressing strip 50. The cooperating member 80 includes a rotating shaft 81, a gear 82 and a torsion spring 83. The rotating shaft 81 is rotatably connected to the side of the pressing strip 50 in the horizontal direction. The gear 82 is sleeved on the rotating shaft 81 and can mesh with the rack. The torsion spring 83 is sleeved on the rotating shaft 81. One end of the torsion spring 83 is connected to the gear 82 and the other end is connected to the pressing strip 50. The rack can follow the telescopic transmission component 40 to move down and mesh with the gear 82 to drive the gear 82 to rotate and cause the pressing strip 50 to move down.

[0044] Specifically, during the downward movement of the rack driven by the telescopic transmission component 40, the rack drives the gear 82 to rotate (the rack and gear 82 are always in mesh). As the gear 82 rotates, the torque of the torsion spring 83 gradually increases. After the torque reaches the critical value (overcoming the pushing force of the elastic pusher 60 on the extension strip 23), the torsion spring 83 causes the gear 82 to rotate in the opposite direction, thereby driving the pressure strip 50 to move downward. The two extension strips 23 swing in opposite directions. Since the rack is continuously moving downward, the torque of the torsion spring 83 reaches the critical value multiple times during this process, so the gear 82 rotates in the opposite direction multiple times until the pressure strip 50 is in contact with the top surface of the support platform 3, so that the top of the support roller 21 and the top surface of the support platform 3 are in the same horizontal plane. The transmission roller 44 also presses the waist head tightly onto the support platform 3, ensuring the support opening of the waist head and the transmission and sewing effect.

[0045] After sewing is completed, as the telescopic transmission assembly 40 drives the rack to move upward, the two elastic pushers 60 push the two extension strips 23 to swing in opposite directions and lift the pressure strip 50. That is, during this process, the rack moves upward first and drives the gear 82 to reverse, until the torque of the torsion spring 83 is reduced to a certain value. Under the action of the elastic pushers 60, the gear 82 and the rack move upward at the same time, which avoids the telescopic transmission assembly 40 from excessively driving the gear 82 to rotate in the opposite direction during the upward movement, thus preventing damage to the torsion spring 83 and improving the service life of the torsion spring 83.

[0046] The guide bar 90 is designed to limit the horizontal displacement of the pressure bar 50, ensuring that the rack and gear 82 can mesh.

[0047] In some embodiments, see Figure 2 and Figure 5 The skateboard 22 is also provided with a horizontally extending limiting strip 221 located on the side of the extension strip 23. The limiting strip 221 can abut against the side wall of the extension strip 23 to limit the swing amplitude of the extension strip 23.

[0048] Specifically, the limiting strip 221 is used to limit the swing amplitude of the extension strip 23, so that the extension strip 23, in its natural state, abuts against the limiting strip 221 and is in a state of tilting outward and upward, so that the extension strip 23 can swing outward when the pressing strip 50 is pressed down next time.

[0049] In some embodiments, see Figure 2 , Figure 3 , Figure 5 and Figure 6 The pressure strip 50 is provided with a horizontally penetrating sliding cavity 51, which extends along the length of the pressure strip 50, and the adjusting rod 212 is slidably connected in the sliding cavity 51.

[0050] Specifically, the outer peripheral wall of the adjusting rod 212 is provided with two outwardly protruding limiting platforms 213. The two limiting platforms 213 are spaced apart in the axial direction of the adjusting rod 212 and are located on both sides of the pressure strip 50, respectively. They are used to contact and cooperate with the side wall of the pressure strip 50, restricting the separation of the adjusting rod 212 from the pressure strip 50, and ensuring a stable sliding connection between the adjusting rod 212 and the sliding cavity 51.

[0051] In some embodiments, see Figure 2 and Figure 5 The outer peripheral wall of the adjusting rod 212 is provided with two outwardly protruding limiting platforms 213 located on both sides of the pressure strip 50. The limiting platforms 213 are used to contact and cooperate with the side wall of the pressure strip 50 to limit the axial position of the adjusting rod 212 and the pressure strip 50.

[0052] Specifically, the limiting platform 213 is used to abut against the side wall of the pressure strip 50, restricting the pressure strip 50 from moving axially along the adjusting rod 212, that is, the pressure strip 50 and the adjusting rod 212 are separated from each other, ensuring the sliding fit between the pressure strip 50 and the adjusting rod 212 and improving practicality.

[0053] In one possible implementation, the aforementioned telescopic transmission assembly 40 employs, as shown in... Figure 1 and Figure 4 The structure shown is described in the following document. Figure 1 and Figure 4The telescopic transmission assembly 40 includes a second telescopic member 41 and a mounting base 43. The second telescopic member 41 is connected to the body 2 and extends downward. The mounting base 43 is connected to the lower end of the second telescopic member 41. The transmission roller 44 is rotatably connected to the lower part of the mounting base 43. One end of the transmission roller 44 is connected to a rotary drive member 42.

[0054] Specifically, the rotary drive 42 is connected to the mounting base 43, and the telescopic component drives the mounting base 43 to move up and down. After the transmission roller 44 presses the waist head onto the support platform 3, the rotary drive 42 drives the transmission roller 44 to rotate, causing the waist head to rotate around the support platform 3 and the support roller 21, thus avoiding the tedious process of manual rotation and saving manpower.

[0055] The outer peripheral wall of the transmission roller 44 is provided with teeth to increase the friction between the transmission roller 44 and the waist head, making it easier for the waist head to rotate.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elastic waistband supporting device, which is provided on a sewing machine, the sewing machine comprising a table, a machine body provided on the top of the table, a needle provided on the machine body, and a supporting table connected to the machine body and located between the needle and the table, characterized in that, The elastic waistband opening device comprises: a mounting strip arranged on the top of the table and supported under the supporting table; two supporting members slidingly connected to the mounting strip and symmetrically arranged on both sides of the supporting table, each of the supporting members being rotatably connected with a supporting roller extending horizontally and perpendicularly to the mounting strip and used for supporting the waistband, the supporting roller being located on the side of the mounting strip away from the machine body, the table being provided with a first telescopic member on the side of the mounting strip, the first telescopic member having two telescopic rods extending in opposite directions and connected with the two supporting members one by one, the two telescopic rods being capable of driving the two supporting members to move away from each other to enable the supporting roller to support the waistband; and a telescopic transmission assembly connected to the machine body and extending downward, the telescopic transmission assembly corresponding to the supporting table in up-down direction, the lower end of the telescopic transmission assembly being rotatably connected with a transmission roller used for driving the waistband to rotate around the supporting roller, the main shaft of the transmission roller being perpendicular to the mounting strip, the telescopic transmission assembly being capable of driving the transmission roller to move downward to press the waistband on the supporting table. The supporting member comprises a sliding plate slidingly connected to the mounting strip and an extending strip connected to the sliding plate and extending upward, the supporting roller being rotatably connected to the extending strip. The extending strip is provided with an adjusting cavity extending in the length direction of the extending strip, the supporting roller comprising an adjusting rod arranged through the adjusting cavity and a rotating sleeve arranged on the outer periphery of the adjusting rod, the adjusting rod being slidingly fitted with the adjusting cavity, the rotating sleeve being located on the side of the extending strip and rotatably connected with the adjusting rod, the adjusting rod being threadedly provided with locking nuts located on both sides of the extending strip to lock the adjusting rod. The supporting table is provided above with a pressing strip slidingly connected to the end of the adjusting rod, the pressing strip and the rotating sleeve being located on both sides of the extending strip, the extending strip being rotatably connected to the sliding plate, the sliding plate being provided with an elastic pushing member capable of elastically pushing the extending strip to vertically swing toward the side of the machine body, the side of the telescopic transmission assembly being provided with a pressing member used for pressing the pressing strip and enabling the two extending strips to swing away from each other to support the waistband.

2. The garter waist tab device of claim 1, wherein, The elastic pushing member comprises: a sliding block slidingly connected to the top surface of the sliding plate in the direction of the mounting strip; a hinged rod arranged between the sliding block and the extending strip, both ends of the hinged rod being hingedly connected with the extending strip and the sliding plate; and an elastic member connected to the top of the sliding plate and connected with the sliding block, used for elastically pushing the sliding block toward the side of the extending strip.

3. The garter waist tab device of claim 1, wherein, The pressing member is a rack extending in the up-down direction, the pressing strip being provided with a cooperating member cooperating with the pressing member to drive the pressing strip to move up and down, the top of the supporting table being provided with a guide strip extending upward through the pressing strip and slidingly cooperating with the pressing strip, the cooperating member comprising: a rotating shaft rotatably connected to the side of the pressing strip in the horizontal direction. A gear is sleeved on the rotating shaft and can engage with the rack. A torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the gear, and the other end is connected to the pressing strip.

4. The garter waist tab device of claim 1, wherein, The sliding plate is further provided with a limiting strip extending horizontally and located at the side of the extending strip.

5. The garter waist tab device of claim 1, wherein, The pressing strip is provided with a sliding cavity extending horizontally and along the length direction of the pressing strip.

6. The garter waist tab device of claim 5, wherein, The outer circumferential wall of the adjusting rod is provided with two limiting platforms protruding outward and located at the two sides of the pressing strip.

7. The garter waist tab device of claim 1, wherein, The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod is connected to the sliding cavity. The adjusting rod

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