WO2022206005A1 - 一种缝纫机用的抬牙勾线模块 - Google Patents

一种缝纫机用的抬牙勾线模块 Download PDF

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Publication number
WO2022206005A1
WO2022206005A1 PCT/CN2021/135975 CN2021135975W WO2022206005A1 WO 2022206005 A1 WO2022206005 A1 WO 2022206005A1 CN 2021135975 W CN2021135975 W CN 2021135975W WO 2022206005 A1 WO2022206005 A1 WO 2022206005A1
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WIPO (PCT)
Prior art keywords
tooth
lifting
shaft
thread
lifter
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Application number
PCT/CN2021/135975
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English (en)
French (fr)
Inventor
郑吉�
柯祥林
祝书伟
郏彬辉
Original Assignee
杰克科技股份有限公司
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Application filed by 杰克科技股份有限公司 filed Critical 杰克科技股份有限公司
Publication of WO2022206005A1 publication Critical patent/WO2022206005A1/zh

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/10—Electrical or electromagnetic drives
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/24—Feed-dog lifting and lowering devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B49/00—Take-up devices, e.g. levers, for the needle thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/30—Driving-gear for loop takers
    • D05B57/36—Driving-gear for loop takers in lock-stitch sewing machines
    • D05B57/38—Shuttle drives
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings

Definitions

  • the present application relates to the technical field of sewing machines, and in particular, to a thread raising and hooking module for sewing machines.
  • the sewing machine has four basic actions: piercing action, thread take-up action, feeding action and thread hooking action, which can realize the basic sewing of sewing material, and add some auxiliary actions, such as thread trimming action, presser foot lifting action, and thread loosening action. , needle distance adjustment action, etc.
  • FIG. 1 the structure of a sewing machine in the prior art is shown in FIG. 1 , which mainly includes a main motor, a main shaft 100 driven and rotated by the main motor, a thorn cloth thread take-up mechanism 200, a feeding mechanism 300, a thread hooking mechanism 400, and a thread trimming mechanism 500.
  • the presser foot lifter mechanism 600 wherein the thorn cloth take-up mechanism 200, the feeding mechanism 300 and the thread hooking mechanism 400 are all driven and operated by the main shaft 100, and the thread trimming cam in the thread trimming mechanism 500 is driven by the lower shaft in the thread hooking mechanism 400.
  • Rotating, the thread trimming mechanism 500 has a thread trimming drive source 501 independent of the main motor
  • the presser foot lifting mechanism 600 has a presser foot lifting drive source 601 independent of the main motor.
  • the main motor drives the main shaft 100 to rotate, and the main shaft 100 drives the needle cloth thread take-up mechanism 200, the feeding mechanism 300 and the thread hooking mechanism 400 to operate, then the needle cloth thread take-up mechanism 200, the feeding mechanism 300 and the thread hooking mechanism operate.
  • the mechanism 400 cooperates to complete the sewing; when the thread trimming is required, the thread trimming drive source 501 acts to make the transmission part in the thread trimming mechanism 500 cooperate with the thread trimming cam, and the main shaft 100 rotates, so that the lower shaft in the thread hooking mechanism 400 rotates Therefore, the thread trimming mechanism 500 is made to perform the thread trimming action; when the presser foot needs to be lifted, the presser foot lift drive source 601 is actuated to make the presser foot lift mechanism 600 perform the presser foot lift action.
  • the existing sewing machines have the following defects:
  • the transmission structure is very complicated; the power of the thorn cloth thread take-up mechanism 200, the feeding mechanism 300, the thread hooking mechanism 400 and the thread trimming mechanism 500 all come from the main shaft 100, or in other words, the thorn cloth thread take-up mechanism 200, the feeding mechanism 300, the hook
  • the power source of the thread mechanism 400 and the thread trimming mechanism 500 is the main motor, therefore, during sewing, the thread barbed thread take-up mechanism 200, the feeding mechanism 300 and the thread hook mechanism 400 are in a linkage relationship;
  • the thread take-up mechanism 200, the feeding mechanism 300, the thread hooking mechanism 400 and the thread trimming mechanism 500 are in a linkage relationship, so that the relative movement sequence between the mechanisms is uniquely determined and cannot be adjusted by the user. Difference;
  • the sewing machine takes the main motor as the main power source, and transmits the power to the needle bar and thread take-up lever in the thread take-up mechanism 200 of the thorn cloth, the feeding dog and the thread hooking mechanism in the feeding mechanism 300 respectively through a relatively complex transmission structure.
  • the terminal execution components such as the rotary hook in 400 and the moving knife in the thread trimming mechanism 500 also need to add an independent thread trimming drive source 501 and a presser foot lifter drive source 601 to cooperate with the action to realize thread trimming and presser foot lifting, etc. Additional features.
  • the overall structure of the sewing machine is complex, and the transmission chain is long, which is easy to cause adverse consequences such as vibration and noise;
  • the noise is very high, and it is very easy to wear; if the transmission chain is too long, the assembly accuracy of the moving parts and the machining accuracy requirements of the parts cannot be accurately guaranteed;
  • the structure of the casing is complex, and the manufacturing precision is high; the casing is divided into upper and lower sections.
  • the lifting teeth in the opposite feeding mechanism 300 The shaft, the feeding shaft, and the lower main shaft of the thread hooking mechanism 400 all lead from the right end of the casing to the left end of the casing, so the coaxiality, concentricity and precision of the corresponding mounting holes in the casing are very high, which is Need to use some special processing equipment, tooling fixtures.
  • the present application proposes a thread lifter module for a sewing machine, which aims to realize a sewing machine lifter
  • the independent drive of the thread module realizes the modular construction of the sewing machine, shortens the transmission chain, and realizes the independent adjustment of the movement sequence of the thread raising and hooking.
  • the present invention provides a thread raising and hooking module for a sewing machine.
  • the thread raising and hooking module of the sewing machine is driven by an independent power source, and the movement sequence can be adjusted independently, thereby shortening the entire transmission chain of the sewing machine.
  • a thread lifter module for a sewing machine is characterized in that it comprises a thread lifter casing, a sewing platform is arranged on the upper side of the thread lifter housing, and the thread lifter casing is provided with a thread lifter
  • the driving source and the rotary hook, the thread-lifting and thread-hook housing is provided with a tooth holder, the upper end of the tooth holder is provided with a feeding dog exposed to the sewing platform, one end of the tooth holder is provided with a tooth-lifting connection part, and the tooth-lifting thread-hook housing is provided with
  • the tooth-lifting and hooking transmission component is connected with the tooth-lifting connection part of the rotary hook and the tooth frame through the tooth-lifting and thread-lifting transmission component.
  • the components that have the function of lifting the thread and lifting the thread are installed into the casing of the thread lifting and hooking to form a modular assembly.
  • the thread lifting module is integrally installed on the lower side of the sewing platform, which is convenient for installation and assembly; Driven by the drive source, the transmission chain between the thread lifter function module and other modules is shortened, and the problems such as vibration, noise, and difficult processing of the casing caused by the long transmission chain are avoided.
  • the lifter hook can be adjusted.
  • the relative movement sequence of the thread module and other functional modules greatly improves the sewing adaptability.
  • the drive source for thread lifter provides rotational power
  • the thread lifter transmission assembly includes a rotation transmission unit connected to the hook and a swing transmission unit connected to the tooth frame. To ensure the reliable performance of teeth lifting and thread hooking.
  • the rotation transmission unit includes an output lower shaft and a tooth lift shaft that are rotatably arranged in the tooth lifter casing, the output lower shaft or the tooth lift shaft is connected to the drive source of the lifter wire hook, and an output lower shaft and the tooth lift shaft are arranged between the lower output shaft and the tooth lift shaft.
  • the shaft transmission unit controls the speed ratio of the output lower shaft and the tooth lift shaft to be 2:1, the rotary hook is fixed at the end of the output lower shaft; the swing transmission unit is arranged on the tooth lift connection between the tooth lift shaft and the tooth frame between the departments.
  • the shaft transmission unit includes a first pulley fixed on the output lower shaft, a second pulley fixed on the lifting shaft, and a transmission belt connecting the first pulley and the second pulley.
  • a first pulley fixed on the output lower shaft a second pulley fixed on the lifting shaft
  • a transmission belt connecting the first pulley and the second pulley.
  • the shaft transmission unit includes a first gear fixed on the lifting shaft and a second gear fixed on the output lower shaft, the first gear meshing with the second gear. It is one of the transmission forms of the lifting shaft and the output lower shaft, with stable transmission and high precision.
  • the swing transmission unit includes a first tooth-lifting eccentric fixed to the tooth-lifting shaft and a first tooth-lifting link
  • the first tooth-lifting eccentric wheel has a first tooth-lifting eccentric shaft part eccentric to the tooth-lifting shaft
  • One end of the first tooth-lifting link is rotatably mounted on the first tooth-lifting eccentric shaft part, and the other end is hinged with the tooth-lifting connecting part of the tooth frame.
  • the rotary power of the driving source of the tooth-lifting hook wire is converted into the swing of the tooth-rack through the eccentric wheel and the connecting rod assembly, so as to ensure the tooth-lifting efficiency.
  • the swing transmission unit includes a second tooth-lifting eccentric fixed on the tooth-lifting shaft, a second tooth-lifting link, a tooth-lifting drive shaft parallel to the tooth-lifting shaft, and a tooth-lifting swing rod fixed on one end of the tooth-lifting drive shaft , a tooth-lifting crank fixed on the other end of the tooth-lifting drive shaft, and a third tooth-lifting connecting rod
  • the second tooth-lifting eccentric wheel has a second-lifting eccentric shaft part eccentric to the tooth-lifting shaft
  • the second One end of the tooth-lifting connecting rod is rotatably mounted on the eccentric shaft part of the second tooth-lifting rod, and the other end is hinged with the tooth-lifting swing rod; Hinged.
  • the swing transmission unit includes a second tooth-lifting eccentric fixed on the tooth-lifting shaft, a second tooth-lifting link, a tooth-lifting drive shaft parallel to the tooth-lifting shaft, and a tooth-lifting swing rod fixed on one end of the tooth-lifting drive shaft , a tooth-lifting fork-shaped crank fixed on the other end of the tooth-lifting drive shaft, and a tooth-lifting slider
  • the second tooth-lifting eccentric wheel has a second tooth-lifting eccentric shaft part eccentric to the tooth-lifting shaft
  • the second tooth-lifting eccentric One end of the tooth connecting rod is rotatably mounted on the eccentric shaft of the second tooth raising, and the other end is hinged with the tooth raising pendulum rod.
  • the tooth-lifting slider is hinged with the tooth-lifting connecting part of the tooth frame.
  • a motor is used as the driving source for the thread lifter.
  • the transmission is stable and the control is convenient.
  • the thread lifter housing includes a first frame and a second frame arranged opposite to each other, and a plurality of connecting struts arranged in parallel are arranged between the first frame and the second frame; There is a first hole group matching the lifting shaft and a second hole group matching the output lower shaft. Between the first frame and the second frame, there is a transfer space for completing the installation of the shaft transmission unit. Installed on the side of the first frame facing away from the second frame.
  • the thread-lifting and thread-lifting shell can be rotatably connected to the thread-lifting shaft, the lower output shaft and the thread-lifting drive shaft.
  • the thread hooking shell and sewing platform are easy to disassemble and assemble, which is convenient for the installation and debugging of the thread raising and hooking module.
  • the invention has the following beneficial effects: modularize the thread lifter and hook mechanism, and use an independent drive source for driving, shorten the transmission chain between the thread lifter function module and other modules, and avoid the excessive length of the transmission chain.
  • the relative movement sequence of the thread raising and hooking module and other functional modules can be adjusted, thereby greatly improving the sewing adaptability.
  • FIG. 1 is a schematic structural diagram of a sewing machine in the prior art.
  • FIG. 2 is a schematic structural diagram of a sewing machine to which the present invention is applied.
  • Figure 3 is a schematic structural diagram of the present invention.
  • FIG. 4 is a schematic structural diagram of a tooth-lifting thread-hook housing in the present invention.
  • FIG. 5 is a schematic structural diagram of the first embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a second embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a third embodiment of the present invention.
  • a thread lifter module for a sewing machine includes a thread lifter housing 422, and the thread lifter housing 422 includes a first frame 423 and a second frame 424 arranged opposite to each other. A number of parallel connecting struts are arranged between the first frame 423 and the second frame 424; a sewing platform is provided on the upper side of the thread lifter housing 422, and the thread lifter housing 422 is connected to the sewing platform by screws 70 underside.
  • the upper side of the sewing platform 70 is provided with a machine head housing 80 with a cantilever structure, and the machine head housing 80 is provided with a presser foot lifting module 60 and a thorn cloth thread take-up module 30 .
  • a cloth feeding module 50 is also fixedly arranged on the lower side of the sewing platform 70 .
  • the thread lifter housing 422 is provided with a drive source 41 and a rotary hook 42, the thread lifter housing is provided with a tooth holder 10, and the upper end of the tooth holder 10 is provided with a feed dog exposed to the sewing platform 70 20.
  • One end of the tooth holder 10 is provided with a tooth-lifting connection part 101, and the other end of the tooth holder 10 is oscillated and fixed on the lower side of the sewing platform 70 through a link structure and is connected to the cloth feeding drive source 41 of the cloth feeding module.
  • the thread-lifting and thread-lifting housing 422 is provided with a thread-lifting and thread-lifting transmission assembly, and the thread-lifting drive source 41 is connected to the hook 42 and the thread-lifting connection part 101 of the thread holder through the thread-lifting and thread-lifting transmission assembly.
  • the driving source 41 for raising the tooth and hooking wire provides rotational power, and the driving source 41 for raising the tooth and hooking wire adopts a motor.
  • the thread lifter and hook transmission assembly includes a rotation transmission unit connected to the hook 42 and a swing transmission unit connected to the tooth holder 10 .
  • the rotation transmission unit includes an output lower shaft 44 and a tooth-lifting shaft 45 rotatably arranged in the tooth-lifting thread-hook housing 422 .
  • the first frame 423 and the second frame 424 are both provided with a first hole group 425 for matching the tooth-lifting shaft 45 .
  • the second hole group 426 that cooperates with the output lower shaft 44, there is a space between the first frame 423 and the second frame 424 for completing the installation of the shaft transmission unit, and the drive source 41 for lifting the thread hook is installed on the first frame 423.
  • the side facing away from the second frame 424 .
  • the tooth-lifting shaft 45 is connected to the tooth-lifting thread drive source 41 through a coupling, a shaft transmission unit is arranged between the output lower shaft 44 and the tooth-lifting shaft 45, and the shaft transmission unit controls the speed ratio of the output lower shaft 44 and the tooth-lifting shaft 45
  • the rotary hook 42 is fixed at the end of the lower output shaft 44
  • the shaft transmission unit includes a first pulley 47 fixed on the output lower shaft 44 , a second pulley 48 fixed on the lifting shaft 45 , and a transmission belt 49 connecting the first pulley 47 and the second pulley 48 .
  • the swing transmission unit includes a first lifting eccentric 412 fixed on the lifting shaft 45 and a first lifting connecting rod 413 .
  • the first lifting eccentric 412 has a first lifting eccentric eccentric to the lifting shaft 45 .
  • one end of the first tooth-lifting link 413 is rotatably mounted on the first tooth-lifting eccentric shaft portion, and the other end is hinged with the tooth-lifting connecting portion 101 of the tooth frame 10 .
  • Embodiment 2 differs from Embodiment 1 in that the structures of the central shaft transmission unit and the tooth-lifting transmission unit of the tooth-lifting thread-hook transmission mechanism are different.
  • the shaft transmission unit includes a first gear 410 fixed on the lifting shaft 45 and a second gear 411 fixed on the output lower shaft 44 .
  • the first gear 410 is connected to
  • the second gear 411 is meshed, and the right end of the thread lifter shaft 45 is fixedly connected to the motor shaft of the thread lifter drive source 41 through the coupling.
  • the tooth-lifting transmission unit includes a second tooth-lifting eccentric 414 fixed on the tooth-lifting shaft 45, a second tooth-lifting link 415, a tooth-lifting transmission shaft 416 parallel to the tooth-lifting shaft 45, and a tooth-lifting transmission shaft 416 fixed on one end of the tooth-lifting shaft 416.
  • the tooth-lifting swing rod 417, the tooth-lifting crank 418 fixed on the other end of the tooth-lifting transmission shaft 416, and the third tooth-lifting connecting rod 419, the second tooth-lifting eccentric wheel 414 has a second tooth-lifting eccentric eccentric to the tooth-lifting shaft 45
  • one end of the second tooth-lifting link 415 is rotatably mounted on the second tooth-lifting eccentric shaft portion, the other end is hinged with the tooth-lifting swing rod 417, and the two ends of the third tooth-lifting link 419 are respectively connected with the tooth-lifting crank 418 is hinged with the tooth-lifting connecting part 101 of the dental frame 10 .
  • a third hole group 427 corresponding to the tooth-lifting drive shaft 416 is also provided on the tooth-lifting wire hook housing 422
  • Example 3 The difference between Example 3 and Example 2 is only that: the structure of the tooth-lifting transmission unit in the tooth-lifting and thread-hook transmission mechanism is different, mainly the connection structure between the tooth-lifting transmission shaft 416 and the tooth-lifting connection part 101 of the tooth holder 10 Are not the same.
  • the tooth-lifting transmission unit includes a second tooth-lifting eccentric 414 fixed on the tooth-lifting shaft 45 , a second tooth-lifting link 415 , which is parallel to the tooth-lifting shaft 45 .
  • the tooth eccentric wheel 414 has a second tooth-lifting eccentric shaft part eccentric to the tooth-lifting shaft 45.
  • One end of the second tooth-lifting link 415 is rotatably mounted on the second tooth-lifting eccentric shaft part, and the other end is connected to the tooth-lifting swing rod 417.
  • the tooth-lifting fork-shaped crank 420 is provided with a tooth-lifting chute slidingly matched with the tooth-lifting slider 421 , and the tooth-lifting slider 421 is hinged with the tooth-lifting connecting portion 101 of the tooth frame 10 .
  • the thread lifter drive source 41 drives the rotary hook 42 to rotate through the thread lifter transmission mechanism to perform the thread hooking action; the thread lifter drive source 41 drives the thread lifter connection 101 up and down through the thread lifter transmission mechanism.
  • the tooth-lifting connection part 101 drives the tooth frame 10 and the feeding dog 20 to reciprocate up and down together to perform the tooth-lifting action;
  • the modules are independent of each other and do not interfere with each other.
  • the transmission structure between the output lower shaft and other functional modules in the original sewing machine is cancelled.
  • the transmission chain of each functional module is shortened and the vibration and noise caused by the long transmission chain are avoided.
  • the relative motion sequence and motion law of each functional module can be adjusted, for example, the motion trajectory of the feed dog 20 can be adjusted, thereby greatly improving the sewing adaptability.
  • the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

Abstract

本发明公开了一种缝纫机用的抬牙勾线模块，其特征在于，包括抬牙勾线壳体，抬牙勾线壳体的上侧设有缝纫平台，抬牙勾线壳体上设有抬牙勾线驱动源和旋梭，抬牙勾线壳体上设有牙架，牙架上端设有暴露于缝纫平台的送布牙，牙架一端设有抬牙连接部，抬牙勾线壳体内设有抬牙勾布传动组件，抬牙勾线驱动源通过抬牙勾线传动组件与旋梭和牙架的抬牙连接部相连。本发明的有益之处在于将缝纫机的抬牙勾线模块通过独立电源驱动，运动时序能够独立调整，缩短缝纫机整体的传动链。

Description

一种缝纫机用的抬牙勾线模块 技术领域
本申请涉及缝纫机技术领域，尤其涉及一种缝纫机用的抬牙勾线模块。
背景技术
缝纫机具有刺料动作、挑线动作、送料动作和勾线动作四大基础动作，就能实现缝料的基础缝制，再添加一些辅助动作，比如剪线动作、抬压脚动作、松线动作、调针距动作等。目前，现有技术中的缝纫机的结构如图1所示，主要包括主电机、由主电机驱动转动的主轴100、刺布挑线机构200、送料机构300、勾线机构400、剪线机构500、以及抬压脚机构600，其中，刺布挑线机构200、送料机构300和勾线机构400都由主轴100驱动运转，剪线机构500中剪线凸轮由勾线机构400中的下轴驱动转动，剪线机构500具有独立于主电机的剪线驱动源501，抬压脚机构600具有独立于主电机的抬压脚驱动源601。现有技术中的缝纫机运转时，主电机驱动主轴100转动，主轴100带动刺布挑线机构200、送料机构300和勾线机构400运转，则刺布挑线机构200、送料机构300和勾线机构400协同配合动作，完成缝纫；需要剪线时，剪线驱动源501动作，使剪线机构500中的传动部件与剪线凸轮配合，主轴100转动，使得勾线机构400中的下轴转动，由此使剪线机构500执行剪线动作；需要抬压脚时，抬压脚驱动源601动作，使抬压脚机构600执行抬压脚动作。然而，现有缝纫机存在下述缺陷：
1、传动结构非常复杂；刺布挑线机构200、送料机构300、勾线机构400和剪线机构500的动力均来自于主轴100，或者说，刺布挑线机构200、送料机构300、勾线机构400和剪线机构500的动力源都为主电机，因此，在缝纫时，刺布挑线机构200、送料机构300和勾线机构400之间为联动关系；在剪线时，刺布挑线机构200、送料机构300、勾线机构400和剪线机构500之间为联动关系，从而导致各机构之间的相对运动时序唯一确定，用户无法调节，对不同类型面料的缝纫适应性较差；
2、缝纫机以主电机为主动力源，通过比较复杂的传动结构，分别将动力传递至刺布挑线机构200中的针杆和挑线杆、送料机构300中的送布牙、勾线机构400中的旋梭、以及剪线机构500中的动刀这些终端执行部件，还需要额外增设独立的剪线驱动源501和抬压脚驱动源601来配合动作，实现剪线和抬压脚等附加功能。因此，缝纫机整体的结构形式复杂，传动链较长，容易引起震动、噪声等不良后果；比如：送料机构300中两根较长的抬牙连杆和送布连杆的高速转动会引起较大的噪声，且极易磨损；传动链过长会导致运动部件的装配精度和零件加工精度要求等无法准确保证；
3、机壳结构复杂，制造精度要求高；机壳分为上下节，为了实现上节的动力传递到下节，且从机壳右端传递到机壳左端，相对的送料机构300中的抬牙轴和送料轴，勾线机构400中的下主轴都从机壳右端整轴通到机壳左端，那么对机壳中相应安装孔的同轴度、同心度及精度都要求非常高，这就需要运用到一些专用的加工设备、工装夹具。
基于现有技术的上述不足，为缝纫机的不同功能部件设置独立的驱动源就很有必要了，本申请在此基础上提出一种缝纫机用的抬牙勾线模块，旨在实现缝纫机抬牙勾线模块的独立驱动，实现缝纫机的模块化构建，缩短传动链，实现对抬牙勾线的运动时序的独立调整。
发明内容
基于现有技术中的上述不足，本发明提供了一种缝纫机用的抬牙勾线模块，缝纫机的抬牙勾线模块通过独立电源驱动，运动时序能够独立调整，缩短缝纫机整体的传动链。
为了实现上述发明目的，本发明采用以下技术方案。
一种缝纫机用的抬牙勾线模块，其特征在于，包括抬牙勾线壳体，抬牙勾线壳体的上侧设有缝纫平台，抬牙勾线壳体上设有抬牙勾线驱动源和旋梭，抬牙勾线壳体上设有牙架，牙架上端设有暴露于缝纫平台的送布牙，牙架一端设有抬牙连接部，抬牙勾线壳体内设有抬牙勾布传动组件，抬牙勾线驱动源通过抬牙勾线传动组件与旋梭和牙架的抬牙连接部相连。
本申请将起到抬牙勾线功能的组件安装到抬牙勾线壳体内形成模块化组件，抬牙勾线模块整体安装到缝纫平台下侧，安装装配方便；抬牙勾线模块采用独立的驱动源进行驱动，缩短了抬牙勾线功能模块和其他模块之间的传动链，避免因传动链过长而引起的振动、噪声、机壳难加工等问题，另一方面可以调整抬牙勾线模块与其他功能模块的相对运动时序，由此大大提升缝纫适应性。
作为优选，抬牙勾线驱动源提供旋转动力，抬牙勾线传动组件包括连接旋梭的转动传动单元和连接牙架的摆动传动单元。保证抬牙和勾线作用的可靠进行。
作为优选，转动传动单元包括在抬牙勾线壳体内转动设置的输出下轴和抬牙轴，输出下轴或抬牙轴连接抬牙勾线驱动源，输出下轴和抬牙轴之间设有轴传动单元，轴传动单元控制输出下轴和抬牙轴的转速比为2:1，旋梭固定在输出下轴的端部；摆动传动单元设置在抬牙轴和牙架的抬牙连接部之间。
作为优选，轴传动单元包括固定在输出下轴上的第一带轮、固定在抬牙轴上的第二带轮、以及连接第一带轮和第二带轮的传动带。抬牙轴和输出下轴的传动形式之一，传动稳定，能够适应小幅冲击。
作为优选，轴传动单元包括固定在抬牙轴上的第一齿轮、以及固定在输出下轴上的第 二齿轮，所述第一齿轮与第二齿轮啮合。抬牙轴和输出下轴的传动形式之一，传动稳定，精度高。
作为优选，摆动传动单元包括固定于抬牙轴的第一抬牙偏心轮、以及第一抬牙连杆，所述第一抬牙偏心轮具有偏心于抬牙轴的第一抬牙偏心轴部，所述第一抬牙连杆的一端可转动地安装于第一抬牙偏心轴部、另一端与牙架的抬牙连接部铰接。抬牙轴和抬牙连接部的配合形式之一，通过偏心轮和连杆组件将抬牙勾线驱动源的旋转动力转化为牙架的摆动，保证抬牙效率。
作为优选，摆动传动单元包括固定于抬牙轴的第二抬牙偏心轮、第二抬牙连杆、平行于抬牙轴的抬牙传动轴、固定在抬牙传动轴一端的抬牙摆杆、固定在抬牙传动轴另一端的抬牙曲柄、以及第三抬牙连杆，所述第二抬牙偏心轮具有偏心于抬牙轴的第二抬牙偏心轴部，所述第二抬牙连杆的一端可转动地安装于第二抬牙偏心轴部、另一端与抬牙摆杆铰接，所述第三抬牙连杆的两端分别与抬牙曲柄和牙架的抬牙连接部铰接。抬牙轴和抬牙连接部的摆动配合形式之一，通过第二抬牙连杆和抬牙摆杆配合，先将抬牙勾线驱动源的旋转动力转化为抬牙传动轴的往复转动，进而带动抬牙曲柄和第三抬牙连杆完成牙架的摆动，能够精简牙架的抬牙连接部位置的连接结构，为抬牙连接部上摆动结构的多样化设置提供可能。方便牙架上摆动控制更加方便。
作为优选，摆动传动单元包括固定于抬牙轴的第二抬牙偏心轮、第二抬牙连杆、平行于抬牙轴的抬牙传动轴、固定在抬牙传动轴一端的抬牙摆杆、固定在抬牙传动轴另一端的抬牙叉形曲柄、以及抬牙滑块，所述第二抬牙偏心轮具有偏心于抬牙轴的第二抬牙偏心轴部，所述第二抬牙连杆的一端可转动地安装于第二抬牙偏心轴部、另一端与抬牙摆杆铰接，所述抬牙叉形曲柄中开设有与抬牙滑块滑动配合的抬牙滑槽，所述抬牙滑块与牙架的抬牙连接部铰接。
作为优选，抬牙勾线驱动源采用电机。传动稳定，控制方便。
作为优选，抬牙勾线壳体包括相对设置的第一框架和第二框架，第一框架和第二框架之间设有若干根平行设置的连接支杆；第一框架和第二框架内均设有配合抬牙轴的第一孔组和配合输出下轴的第二孔组，第一框架和第二框架之间设有用于完成轴传动单元安装的让渡空间，抬牙勾线驱动源安装在第一框架背对第二框架的一侧。抬牙勾线壳体能够转动连接抬牙轴、输出下轴和抬牙传动轴，将实现抬牙勾线功能的各个组件集成了一体，实现了抬牙勾线组件的模块化设置，抬牙勾线壳体和缝纫平台的拆装方便，方便抬牙勾线模块的安装和调试。
本发明具有如下有益效果：将抬牙勾线机构模块化，采用独立的驱动源进行驱动，缩短了抬牙勾线功能模块和其他模块之间的传动链，避免因传动链过长而引起的振动、噪声、机壳难加工等问题，另一方面可以调整抬牙勾线模块与其他功能模块的相对运动时序，由此大大提升缝纫适应性。
附图说明
图1为现有技术中缝纫机的结构示意图。
图2是本发明应用的缝纫机的结构示意图。
图3是本发明的结构示意图。
图4是本发明中抬牙勾线壳体的结构示意图。
图5是本发明第一种实施例的结构示意图。
图6是本发明第二种实施例的结构示意图。
图7是本发明第三种实施例的结构示意图。
元件标号说明
10            牙架
101           抬牙连接部
20            送布牙
30            刺布挑线模块
40            抬牙勾线模块
41            抬牙勾线驱动源
42            旋梭
44            输出下轴
45            抬牙轴
47            第一带轮
48            第二带轮
49            传动带
410           第一齿轮
411           第二齿轮
412           第一抬牙偏心轮
413           第一抬牙连杆
414           第二抬牙偏心轮
415           第二抬牙连杆
416           抬牙传动轴
417           抬牙摆杆
418           抬牙曲柄
419           第三抬牙连杆
420           抬牙叉形曲柄
421           抬牙滑块
422           抬牙勾线壳体
423           第一框架
424           第二框架
425           第一孔组
426           第二孔组
427           第三孔组
50            送布模块
60            抬压脚模块
70            缝纫平台
80            机头壳体
具体实施方式
下面结合附图和具体实施例对本发明进行进一步的阐述。
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
须知，本说明书附图所绘的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
实施例1，
如图2到图5所示，一种缝纫机用的抬牙勾线模块，包括抬牙勾线壳体422，抬牙勾线壳体422包括相对设置的第一框架423和第二框架424，第一框架423和第二框架424之间设有若干根平行设置的连接支杆；抬牙勾线壳体422的上侧设有缝纫平台，抬牙勾线壳体422通过螺钉连接在缝纫平台70下侧。缝纫平台70上侧设有悬臂结构的机头壳体80，机头壳体80内设置了抬压脚模块60和刺布挑线模块30。缝纫平台70下侧还固定设有送布模块50。抬牙勾线壳体422上设有抬牙勾线驱动源41和旋梭42，抬牙勾线壳体上设有牙架10，牙架10上端设有暴露于缝纫平台70的送布牙20，牙架10一端设有抬牙连接部101，牙架10的另一端通过连杆结构摆动固定在缝纫平台70下侧并且和送布模块的送布驱动源41连接。抬牙勾线壳体422内设有抬牙勾布传动组件，抬牙勾线驱动源41通过抬牙勾线传动组件与旋梭42和牙架的抬牙连接部101相连。抬牙勾线驱动源41提供旋转动力，抬牙勾线驱动源41采用电机。
抬牙勾线传动组件包括连接旋梭42的转动传动单元和连接牙架10的摆动传动单元。转动传动单元包括在抬牙勾线壳体422内转动设置的输出下轴44和抬牙轴45，第一框架423和第二框架424内均设有配合抬牙轴45的第一孔组425和配合输出下轴44的第二孔组426，第一框架423和第二框架424之间设有用于完成轴传动单元安装的让渡空间，抬牙勾线驱动源41安装在第一框架423背对第二框架424的一侧。抬牙轴45通过联轴器连接抬牙勾线驱动源41，输出下轴44和抬牙轴45之间设有轴传动单元，轴传动单元控制输出下轴44和抬牙轴45的转速比为2:1，旋梭42固定在输出下轴44的端部；摆动传动单元设置在抬牙轴45和牙架10的抬牙连接部101之间。轴传动单元包括固定在输出下轴44上的第一带轮47、固定在抬牙轴45上的第二带轮48、以及连接第一带轮47和第二带轮48的传动带49。摆动传动单元包括固定于抬牙轴45的第一抬牙偏心轮412、以及第一抬牙连杆413，所述第一抬牙偏心轮412具有偏心于抬牙轴45的第一抬牙偏心轴部，所述第一抬牙连杆413的一端可转动地安装于第一抬牙偏心轴部、另一端与牙架10的抬牙连接部101铰接。
实施例2，
实施例2与实施例1的区别仅在于：抬牙勾线传动机构中轴传动单元和抬牙传动单元的结构不相同。具体说，实施例2中，如图6所示，轴传动单元包括固定在抬牙轴45上的第一齿轮410、以及固定在输出下轴44上的第二齿轮411，第一齿轮410与第二齿轮411啮合，抬牙轴45的右端通过联轴器与抬牙勾线驱动源41的电机轴固定相连，抬牙轴45由抬牙勾线驱动源41直接驱动转动。抬牙传动单元包括固定于抬牙轴45的第二抬牙偏心轮414、第二抬牙连杆415、平行于抬牙轴45的抬牙传动轴416、固定在抬牙传动轴416一端的抬牙摆杆417、固定在抬牙传动轴416另一端的抬牙曲柄418、以及第三抬牙连杆419，第二抬牙偏心轮414具有偏心于抬牙轴45的第二抬牙偏心轴部，第二抬牙连杆415的一端可转动地安装于第二抬牙偏心轴部、另一端与抬牙摆杆417铰接，第三抬牙连杆419的两端分别与抬牙曲柄418和牙架10的抬牙连接部101铰接。如图4所示，抬牙勾线壳体422上还设置了对应抬牙传动轴416的第三孔组427
实施例3，
实施例3和实施例2的区别仅在于：抬牙勾线传动机构中抬牙传动单元的结构不相同，主要是抬牙传动轴416与牙架10的抬牙连接部101之间的连接结构不相同。具体说，实施例3中，如图6和图7所示，抬牙传动单元包括固定于抬牙轴45的第二抬牙偏心轮414、第二抬牙连杆415、平行于抬牙轴45的抬牙传动轴416、固定在抬牙传动轴416一端的抬牙摆杆417、固定在抬牙传动轴416另一端的抬牙叉形曲柄420、以及抬牙滑块421，第二抬牙偏心轮414 具有偏心于抬牙轴45的第二抬牙偏心轴部，第二抬牙连杆415的一端可转动地安装于第二抬牙偏心轴部、另一端与抬牙摆杆417铰接，抬牙叉形曲柄420中开设有与抬牙滑块421滑动配合的抬牙滑槽，抬牙滑块421与牙架10的抬牙连接部101铰接。
缝纫机运转时，抬牙勾线驱动源41通过抬牙勾线传动机构驱动旋梭42转动，执行勾线动作；抬牙勾线驱动源41通过抬牙勾线传动机构驱动抬牙连接部101上下往复运动，抬牙连接部101带动牙架10和送布牙20一起上下往复运动，执行抬牙动作；抬牙勾线模块采用独立的驱动源进行驱动，使得刺布挑线模块30和其他功能模块间相互独立、互不干涉，取消原缝纫机中输出下轴与其他功能模块之间的传动结构，一方面缩短了各功能模块的传动链，避免因传动链过长而引起的振动、噪声等问题，另一方面可以调整各功能模块的相对运动时序和运动规律，比如可以调整送布牙20的运动轨迹等，由此大大提升缝纫适应性。
综上所述，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (10)

  1. 一种缝纫机用的抬牙勾线模块，其特征在于，包括抬牙勾线壳体(422)，抬牙勾线壳体(422)的上侧设有缝纫平台(70)，抬牙勾线壳体(422)上设有抬牙勾线驱动源(41)和旋梭(42)，抬牙勾线壳体(422)上设有牙架(10)，牙架(10)上端设有暴露于缝纫平台(70)的送布牙(20)，牙架(10)一端设有抬牙连接部(101)，抬牙勾线壳体(422)内设有抬牙勾布传动组件，抬牙勾线驱动源(41)通过抬牙勾线传动组件与旋梭(42)、以及牙架(10)的抬牙连接部(101)相连。
  2. 根据权利要求1所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述抬牙勾线驱动源(41)提供旋转动力，抬牙勾线传动组件包括连接旋梭(42)的转动传动单元和连接牙架(10)的摆动传动单元。
  3. 根据权利要求2所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述转动传动单元包括在抬牙勾线壳体(422)内转动设置的输出下轴(44)和抬牙轴(45)，输出下轴(44)或抬牙轴(45)连接抬牙勾线驱动源(41)，输出下轴(44)和抬牙轴(45)之间设有轴传动单元，轴传动单元控制输出下轴(44)和抬牙轴(45)的转速比为2:1，旋梭(42)固定在输出下轴(44)的端部；摆动传动单元设置在抬牙轴(45)和牙架(10)的抬牙连接部(101)之间。
  4. 根据权利要求3所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述轴传动单元包括固定在输出下轴(44)上的第一带轮(47)、固定在抬牙轴(45)上的第二带轮(48)、以及连接第一带轮(47)和第二带轮(48)的传动带(49)。
  5. 根据权利要求3所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述轴传动单元包括固定在抬牙轴(45)上的第一齿轮(410)、以及固定在输出下轴(44)上的第二齿轮(411)，所述第一齿轮(410)与第二齿轮(411)啮合。
  6. 根据权利要求2所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述摆动传动单元包括固定于抬牙轴(45)的第一抬牙偏心轮(412)、以及第一抬牙连杆(413)，所述第一抬牙偏心轮(412)具有偏心于抬牙轴(45)的第一抬牙偏心轴部，所述第一抬牙连杆(413)的一端可转动地安装于第一抬牙偏心轴部、另一端与牙架(10)的抬牙连接部(101)铰接。
  7. 根据权利要求2所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述摆动传动单元包括固定于抬牙轴(45)的第二抬牙偏心轮(414)、第二抬牙连杆(415)、平行于抬牙轴(45)的抬牙传动轴(416)、固定在抬牙传动轴(416)一端的抬牙摆杆(417)、固定在抬牙传动轴(416)另一端的抬牙曲柄(418)、以及第三抬牙连杆(419)，所述第二抬牙偏心轮(414)具有偏心于抬牙轴(45)的第二抬牙偏心轴部，所述第二抬牙连杆(415)的一端可转动地安 装于第二抬牙偏心轴部、另一端与抬牙摆杆(417)铰接，所述第三抬牙连杆(419)的两端分别与抬牙曲柄(418)和牙架(10)的抬牙连接部(101)铰接。
  8. 根据权利要求2所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述摆动传动单元包括固定于抬牙轴(45)的第二抬牙偏心轮(414)、第二抬牙连杆(415)、平行于抬牙轴(45)的抬牙传动轴(416)、固定在抬牙传动轴(416)一端的抬牙摆杆(417)、固定在抬牙传动轴(416)另一端的抬牙叉形曲柄(420)、以及抬牙滑块(421)，所述第二抬牙偏心轮(414)具有偏心于抬牙轴(45)的第二抬牙偏心轴部，所述第二抬牙连杆(415)的一端可转动地安装于第二抬牙偏心轴部、另一端与抬牙摆杆(417)铰接，所述抬牙叉形曲柄(420)中开设有与抬牙滑块(421)滑动配合的抬牙滑槽，所述抬牙滑块(421)与牙架(10)的抬牙连接部(101)铰接。
  9. 根据权利要求1或2所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述抬牙勾线驱动源(41)采用电机。
  10. 根据权利要求3所述的一种缝纫机用的抬牙勾线模块，其特征在于，所述抬牙勾线壳体(422)包括相对设置的第一框架(423)和第二框架(424)，第一框架(423)和第二框架(424)之间设有若干根平行设置的连接支杆；第一框架(423)和第二框架(424)内均设有配合抬牙轴(45)的第一孔组(425)和配合输出下轴(44)的第二孔组(426)，第一框架(423)和第二框架(424)之间设有用于完成轴传动单元安装的让渡空间，抬牙勾线驱动源(41)安装在第一框架(423)背对第二框架(424)的一侧。
PCT/CN2021/135975 2021-04-02 2021-12-07 一种缝纫机用的抬牙勾线模块 WO2022206005A1 (zh)

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