WO2016155174A1 - 一种缝纫机针杆同步旋转机构 - Google Patents

一种缝纫机针杆同步旋转机构 Download PDF

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Publication number
WO2016155174A1
WO2016155174A1 PCT/CN2015/085746 CN2015085746W WO2016155174A1 WO 2016155174 A1 WO2016155174 A1 WO 2016155174A1 CN 2015085746 W CN2015085746 W CN 2015085746W WO 2016155174 A1 WO2016155174 A1 WO 2016155174A1
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WO
WIPO (PCT)
Prior art keywords
needle bar
sewing
needle
bearing
motor
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Application number
PCT/CN2015/085746
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English (en)
French (fr)
Inventor
王漫江
Original Assignee
东莞市名菱工业自动化科技有限公司
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Priority claimed from CN201510152517.7A external-priority patent/CN104727033B/zh
Priority claimed from CN201510152451.1A external-priority patent/CN104727032B/zh
Application filed by 东莞市名菱工业自动化科技有限公司 filed Critical 东莞市名菱工业自动化科技有限公司
Publication of WO2016155174A1 publication Critical patent/WO2016155174A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/14—Needle-bar drives

Definitions

  • the invention relates to the technical field of sewing machines, in particular to a synchronous rotation with a synchronous rotating mechanism of a shuttle on a sewing machine, so as to realize synchronous rotation of the shuttle bed and the needle bar, so that the sewing direction and the setting of the sewing needle are to be stitched.
  • the stitches are always consistent with the needle bar synchronous rotation mechanism.
  • the conventional sewing mechanism generally includes an upper casing and a lower casing, and an upper shaft motor and a needle bar mechanism mounted on the upper casing, and are disposed in the upper casing and respectively connected to the upper shaft motor and the needle bar mechanism.
  • the shaft, and the lower shaft motor and the shuttle mechanism mounted on the lower casing are formed in the lower casing and respectively connected to the lower shaft motor and the lower shaft of the shuttle drive, and the upper shaft is driven to rotate by the upper shaft motor.
  • the shaft drives the needle bar mechanism to move up and down to realize the upper and lower sewing action of the sewing needle
  • the lower shaft motor drives the lower shaft to rotate
  • the lower shaft drives the shuttle mechanism to move with the sewing needle for sewing operation, and the sewing mechanism is sewing.
  • the needle bar can not achieve the corresponding rotation according to the stitched stitches at the same time, the push-pull effect of the feeding mechanism when feeding, the force of the bottom thread and the upper thread when the hook line is stitched is unbalanced, and the sewing needle can not be stitched. Consistent with the stitches that are set to be sewn, the resulting stitches are loose, irregular, uneven, and the like.
  • the sewing direction of the sewing needle is difficult to be consistent with the stitching of the set sewing, so that the stitch obtained at the last sewing will be very loose, irregular, uneven, and cannot be combined with
  • the stitches to be sewn are completely matched, which seriously affects the appearance of the product and the quality of the sewing, affecting the overall quality of the product, resulting in a lower yield of the product.
  • there is a needle rod synchronous rotating mechanism that can make the stitching direction of the sewing needle consistent with the stitch set to be sewn, and the structure is that the motor and the motor seat are mounted on the casing, and a U-shaped motor shaft is specially made.
  • the needle bar is flat on both sides, the needle bar slides up and down inside the motor shaft, and the motor shaft rotates to drive the needle bar to rotate. Because the needle bar and the motor shaft are sliding friction, and the motor shaft drives the needle bar to rotate, there is a radial direction pressure. Therefore, during the use process, the needle bar and the motor shaft are prone to seizure and burnout, and the gap between the needle bar and the motor shaft is large, and the precision of the whole set is low, and it is difficult to lubricate and refuel.
  • the object of the present invention is to overcome the above-mentioned drawbacks in the prior art, to provide a needle bar that can be rotated during the process of sewing materials, and can cooperate with the synchronous rotating mechanism of the shuttle on the sewing mechanism to realize the needle bar and the shuttle bed. Simultaneous rotation, so as to ensure that the upper thread and the lower thread are balanced during sewing, so that the sewing needle is stitched in the same direction as the set stitching stitching mechanism, which ensures that the transmission has no gap and the sliding friction Improved to rolling friction, greatly reducing friction.
  • a sewing machine needle bar synchronous rotation mechanism comprises a needle bar for inserting a sewing needle mounted on an upper casing, and a needle bar motor for driving the needle bar to rotate, the upper end of the needle bar is connected to a rotating seat And a first bearing for clamping the needle bar on the rotating seat, the rolling bar is formed with rolling friction when the needle bar moves up and down; the rotating seat is fixedly connected with the sleeve of the needle bar, and the sleeve of the needle bar is fixed
  • the second bearing set is arranged on the upper casing, the rotary seat is connected with the needle bar motor, or the rotary seat is arranged on the sleeve of the needle bar through the second bearing set, and the sleeve on the needle bar is fixedly connected with the upper casing Together, the swivel mount is coupled to the needle bar motor drive.
  • the face of the needle bar in contact with the first bearing is a flat surface, and the first bearing is opposite to the pin bar.
  • the rotating base is a synchronous pulley seat, and the needle bar motor is connected through a timing belt.
  • the utility model has the beneficial effects of the needle rod synchronous rotation mechanism: the two needles are used to clamp the needle bar, the transmission is guaranteed to have no gap, the sliding friction is improved to rolling friction, the friction force is greatly reduced, and the bearing seat is mounted on the synchronous pulley On the seat, the synchronous pulley seat and the sleeve of the needle bar are fixedly mounted, and the bearing position is processed on the casing, and the bearing is mounted on the casing and connected to the sleeve on the needle bar, that is, the motor drives the timing pulley and the sleeve on the needle bar.
  • this structure ensures the concentricity of the rotating part and the needle bar, or the synchronous pulley seat and the sleeve on the needle bar are mounted together through the bearing, thereby ensuring the rotating part and the needle bar Concentricity.
  • the needle bar rotating part is connected to the driving motor through the timing belt, and the whole set of transmissions is a flexible connection, eliminating transmission noise.
  • the needle bar can be rotated when the sewing mechanism sews the material, and when the needle bar synchronous rotation mechanism is applied to the sewing mechanism, the synchronous rotation of the needle bar can be synchronized to realize the sewing direction of the sewing needle.
  • the stitches of the set sewing are always consistent, so the stitches obtained by sewing have the advantages of compactness, tidyness and uniformity; effectively solving the influence of the pushing and pulling on the bottom line and the upper thread generated by the feeding mechanism during feeding, especially when sewing is not performed.
  • the needle bar and the shuttle bed are rotated synchronously, so that the upper thread and the lower thread are balanced when the hook line is stitched, and the stitching direction of the sewing needle is always consistent with the stitch of the set sewing, thereby ensuring sewing.
  • the obtained stitches will be very tight, neat and uniform, and completely conform to the set stitching.
  • the structure is simple, the design is ingenious and reasonable, and the appearance and sewing quality of the product can be greatly improved, and the product can be improved. Advantages such as pass rate.
  • FIG. 1 is a schematic structural view of a preferred embodiment of the present invention.
  • Figure 2 is a side view showing the structure of the embodiment of Figure 1;
  • FIG. 3 is a schematic structural view of another preferred embodiment of the present invention.
  • Figure 4 is a side elevational view of the structure of the embodiment of Figure 3.
  • the present invention relates to a needle-and-pin synchronous rotating mechanism for a sewing machine, comprising a needle bar for inserting a sewing needle mounted on the upper casing 1. 2, and a needle bar motor 3 for driving the needle bar 2, the upper end of the needle bar 2 is connected to a rotating base 4, and the first bearing 5 for clamping the needle bar 2 is provided on the rotating base 4, the needle bar 2 Rolling friction is formed with the first bearing 5 when moving up and down.
  • the surface of the needle bar 2 in contact with the first bearing 5 is a flat surface, and the first bearing 5 is paired with the pin bar 2; the connection structure is good, and the first bearing 5 rotates synchronously with the rotating base 4 to drive
  • the needle bar 2 rotates while forming a rolling friction with the needle bar 2 moving up and down; the structure enables the needle bar 2 to cooperate with the synchronous rotating mechanism of the shuttle bed to realize synchronous rotation, thereby making the sewing needle stitching direction and the set sewing line
  • the traces are always consistent, so the stitches obtained by sewing have the advantages of compactness, tidyness and uniformity; effectively solving the influence of the push-pull generated by the feeding mechanism on the bottom line and the upper thread when feeding, especially when sewing irregular stitches,
  • the needle bar and the shuttle bed rotate synchronously, so that the upper thread and the lower thread are balanced when stitched at the hook line position, and the stitching direction of the sewing needle is always consistent with the stitch of the set sewing, thereby ensuring that the stitch obtained by the stitching is very It is compact
  • the rotating base 4 is fixedly coupled with the sleeve 7 on the needle bar, and the sleeve 7 on the needle bar is assembled on the upper casing 1 through the second bearing 6, and the rotating base 4 and the needle bar motor 3 are driven.
  • the connection ensures the concentricity of the rotating member with the needle bar.
  • the rotating base 4 is a synchronous pulley seat, and the needle bar motor 3 is connected through the timing belt 8.
  • the whole transmission is a flexible connection, which eliminates transmission noise.
  • the needle bar synchronous rotation mechanism of the present invention clamps the needle bar 2 using two first bearings 5, ensures that the transmission has no gap, improves the sliding friction into rolling friction, greatly reduces the friction force, and the bearing for the first bearing 5 is mounted.
  • the seat is mounted on the timing pulley seat, the timing belt wheel seat is fixedly mounted with the sleeve 7 on the needle bar, and then the bearing position is machined on the casing 1, and the second bearing 6 is mounted on the upper casing 1 and the needle bar
  • the sleeve 7 is connected, that is, the motor drives the timing belt wheel seat and the sleeve on the needle bar to rotate, and the needle rod is rotated to realize the rotation function of the needle bar.
  • the structure ensures the concentricity of the rotating member and the needle bar, and the rotating parts of the needle bar are synchronized.
  • the belt is connected to the drive motor and the entire drive is a flexible connection, eliminating transmission noise.
  • the present invention relates to a synchronous rotation mechanism for a needle bar of a sewing machine, comprising a needle for inserting a sewing needle mounted on the upper casing 1. a needle bar 2, and a needle bar motor 3 for driving the needle bar 2 to rotate, an upper end of the needle bar 2 is connected to a rotating base 4, and a first bearing 5 for clamping the needle bar 2 is disposed on the rotating base 4, When the needle bar 2 moves up and down, it forms a rolling friction with the first bearing 5.
  • the surface of the needle bar 2 in contact with the first bearing 5 is a flat surface, and the first bearing 5 is paired with the pin bar 2; the connection structure is good, and the first bearing 5 rotates synchronously with the rotating base 4 to drive
  • the needle bar 2 rotates while forming a rolling friction with the needle bar 2 moving up and down; the structure enables the needle bar 2 to cooperate with the synchronous rotating mechanism of the shuttle bed to realize synchronous rotation, thereby making the sewing needle stitching direction and the set sewing line
  • the traces are always consistent, so the stitches obtained by sewing have the advantages of compactness, tidyness and uniformity; effectively solving the influence of the push-pull generated by the feeding mechanism on the bottom line and the upper thread when feeding, especially when sewing irregular stitches,
  • the needle bar and the shuttle bed rotate synchronously, so that the upper thread and the lower thread are balanced when stitched at the hook line position, and the stitching direction of the sewing needle is always consistent with the stitch of the set sewing, thereby ensuring that the stitch obtained by the stitching is very It is compact
  • the rotating base 4 is assembled on the needle bar sleeve 7 through the second bearing 6, the sleeve 7 is fixedly coupled with the upper casing 1, and the rotating base 4 and the needle bar motor 3 are driven. connection.
  • the rotating base 4 is a synchronous pulley seat, and the needle bar motor 3 is connected through the timing belt 8.
  • the beneficial effect of the needle bar synchronous rotation mechanism of the present invention is that the needle bar 2 is clamped by using the two first bearings 5 to ensure that the transmission has no gap, the sliding friction is improved to rolling friction, the friction force is greatly reduced, and the first
  • the bearing housing mounted on the bearing 5 is mounted on the timing pulley seat, and the timing pulley seat and the needle bar upper sleeve 7 are mounted together through the second bearing 6, ensuring the concentricity of the rotating member and the needle bar.
  • the needle bar rotating part is connected to the driving motor through the timing belt, and the whole set of transmissions is a flexible connection, eliminating transmission noise.

Abstract

一种缝纫机针杆同步旋转机构，包括装设在上机壳(1)上的用于插装缝纫针的针杆(2)和驱动针杆(2)转动的针杆电机(3)，针杆(2)的上端穿设连接一旋转座(4)，并于旋转座(4)上设有夹紧针杆(2)的第一轴承(5)，针杆(2)上下运动时与第一轴承(5)形成滚动摩擦；旋转座(4)与针杆上套筒(7)固定连接，针杆上套筒(7)通过第二轴承(6)组设在上机壳(1)上，旋转座(4)与针杆电机(3)传动连接，或者旋转座(4)通过第二轴承(6)组设在针杆上套筒(7)上，针杆上套筒(7)与上机壳(1)固连在一起，旋转座(4)与针杆电机(3)传动连接。该机构使用两个轴承夹紧针杆，保证传动无间隙，把滑动摩擦改进为滚动摩擦，降低摩擦力，并且保证了转动部件与针杆的同心度；其结构简单，设计巧妙、合理，能提高产品的外观和缝制质量，提高产品的合格率。

Description

一种缝纫机针杆同步旋转机构
技术领域
本发明涉及缝纫机技术领域，尤其是涉及一种能与缝纫机上的梭床同步旋转机构相配合进行同步旋转，以实现梭床和针杆可同步旋转，使缝纫针的缝合方向与设定要缝制的线迹始终保持一致的针杆同步旋转机构。
背景技术
传统的缝纫机构一般包括上机壳和下机壳，装设在上机壳上的上轴电机和针杆机构，穿设在上机壳内分别与上轴电机及针杆机构传动连接的上轴，以及装设在下机壳上的下轴电机和梭床机构，穿设在下机壳内并分别与下轴电机及梭床传动连接的下轴构成，通过上轴电机驱动上轴转动，上轴带动针杆机构做上下运动以实现缝纫针的上下缝纫动作，通过下轴电机驱动下轴转动，该下轴带动梭床机构运动以配合缝纫针进行缝纫操作，而此类缝纫机构在进行缝纫时，针杆不能实现依据缝制的线迹同时进行相适应的转动，以致受送料机构送料时的推拉影响，底线和面线在勾线位置缝合时受力不平衡，缝纫针的缝合方向不能与设定要缝制的线迹保持一致，最终导致缝合的线迹出现松散、不整齐、不均匀等缺陷。尤其是在缝制不规则线迹时，缝纫针的缝合方向很难与设定缝制的线迹始终保持一致，导致最后缝制得到的线迹会非常松散、不整齐、不均匀，不能与设定要缝制的线迹完全吻合，严重的影响产品的外观的美观性和缝制质量，影响产品的整体质量，导致产品的合格率较低。随后出现有可使缝纫针的缝合方向与设定要缝制的线迹始终保持一致的针杆同步旋转机构，其结构为，电机与电机座安装于机壳上，特殊定做U型电机轴，针杆两侧做扁面，针杆在电机轴内部上下滑动，电机轴转动带动针杆转动，因为针杆与电机轴为滑动摩擦，而且电机轴带动针杆转动，有一个径向方向的压力，因此在使用过程中，针杆与电机轴容易发生卡死、烧死的现象，而且此结构针杆与电机轴间隙较大，整套结构精度较低，润滑加油较为困难。
发明内容
本发明的目的在于克服现有技术中的上述缺陷，提供一种在缝制物料过程中针杆可进行转动，且能与缝纫机构上的梭床同步旋转机构相配合实现针杆和梭床能同步旋转，从而保证面线和底线在缝纫时受力平衡，使得缝纫针的缝合方向与设定缝制的线迹始终保持一致的针杆同步旋转机构，其保证传动无间隙，且把滑动摩擦改进为滚动摩擦，大大降低摩擦力。
为实现上述目的，本发明提供的技术方案如下：
一种缝纫机针杆同步旋转机构，包括装设在上机壳上的用于插装缝纫针的针杆，以及驱动针杆转动的针杆电机，所述针杆的上端穿设连接一旋转座，并于旋转座上设有夹紧针杆的第一轴承，针杆上下运动时与第一轴承形成滚动摩擦；所述旋转座与针杆上套筒固定连接在一起，针杆上套筒通过第二轴承组设在上机壳上，旋转座与针杆电机传动连接，或者，旋转座通过第二轴承组设在针杆上套筒上，针杆上套筒与上机壳固连在一起，旋转座与针杆电机传动连接。
所述针杆与第一轴承接触的面为削平面，第一轴承成对对夹针杆。
所述旋转座为同步带轮座，通过同步带连接针杆电机。
本发明所述的针杆同步旋转机构的有益效果是：使用两个轴承夹紧针杆，保证传动无间隙，把滑动摩擦改进为滚动摩擦，大大降低摩擦力，并且轴承座安装于同步带轮座上，同步带轮座与针杆上套筒固定安装，机壳上加工出轴承位置，轴承安装在机壳上与针杆上套筒相连，即电机带动同步带轮和针杆上套筒转动，驱动针杆转动实现针杆旋转功能，此结构保证了转动部件与针杆的同心度，或者同步带轮座与针杆上套筒通过轴承安装在一起，保证了转动部件与针杆的同心度。针杆转动部件通过同步带与驱动电机连接，整套传动为柔性连接，消除了传动噪音。实现了针杆在缝纫机构缝制物料时可进行转动，将该针杆同步旋转机构应用于缝纫机构上时，可与梭床同步旋转机构相配合实现同步旋转，从而使缝纫针的缝合方向与设定缝制的线迹始终保持一致，因此缝纫得到的线迹具有紧密、整齐、均匀等优点；有效解决送料机构在送料时产生的推拉对底线和面线的影响，尤其是在缝制不规则线迹时，通过针杆和梭床同步旋转，使面线和底线在勾线位置缝合时受力平衡，缝纫针的缝合方向与设定缝制的线迹始终保持一致，从而保证缝制得到的线迹会非常的紧密、整齐、均匀，与设定缝制的线迹完全吻合，具有结构简单，设计巧妙、合理，能极大的提高了产品的外观和缝制质量，提高产品的合格率等优点。
附图说明
附图1为本发明一种较佳实施例的结构示意图；
附图2为图1实施例的结构侧视图；
附图3为本发明另一种较佳实施例的结构示意图；
附图4为图3实施例的结构侧视图。
具体实施方式
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
实施例一
参阅图1、2所示，系为本发明的较佳实施例示意图，本发明有关一种缝纫机针杆同步旋转机构，包括装设在上机壳1上的用于插装缝纫针的针杆2，以及驱动针杆2转动的针杆电机3，所述针杆2的上端穿设连接一旋转座4，并于旋转座4上设有夹紧针杆2的第一轴承5，针杆2上下运动时与第一轴承5形成滚动摩擦。本实施例中，所述针杆2与第一轴承5接触的面为削平面，第一轴承5成对对夹针杆2；连接结构良好，第一轴承5与旋转座4同步旋转，带动针杆2旋转，同时与上下运动的针杆2形成滚动摩擦；该结构可使针杆2与梭床同步旋转机构相配合实现同步旋转，从而使缝纫针的缝合方向与设定缝制的线迹始终保持一致，因此缝纫得到的线迹具有紧密、整齐、均匀等优点；有效解决送料机构在送料时产生的推拉对底线和面线的影响，尤其是在缝制不规则线迹时，通过针杆和梭床同步旋转，使面线和底线在勾线位置缝合时受力平衡，缝纫针的缝合方向与设定缝制的线迹始终保持一致，从而保证缝制得到的线迹会非常的紧密、整齐、均匀，与设定缝制的线迹完全吻合。本发明中，所述旋转座4与针杆上套筒7固定连接在一起，针杆上套筒7通过第二轴承6组设在上机壳1上，旋转座4与针杆电机3传动连接，该结构保证了转动部件与针杆的同心度。本实施例中，所述旋转座4为同步带轮座，通过同步带8连接针杆电机3，整套传动为柔性连接，消除了传动噪音。
本发明所述的针杆同步旋转机构使用两个第一轴承5夹紧针杆2，保证传动无间隙，把滑动摩擦改进为滚动摩擦，大大降低摩擦力，并且供第一轴承5安装的轴承座安装于同步带轮座上，同步带轮座与针杆上套筒7固定安装，然后再上机壳1上加工出轴承位置，第二轴承6安装在上机壳1上与针杆上套筒7相连，即电机带动同步带轮座和针杆上套筒转动，驱动针杆转动实现针杆旋转功能，该结构保证了转动部件与针杆的同心度，同时针杆转动部件通过同步带与驱动电机连接，整套传动为柔性连接，消除了传动噪音。
实施例二
参阅图3、4所示，系为本发明的另一较佳实施例示意图，本发明有关一种缝纫机针杆同步旋转机构，包括装设在上机壳1上的用于插装缝纫针的针杆2，以及驱动针杆2转动的针杆电机3，所述针杆2的上端穿设连接一旋转座4，并于旋转座4上设有夹紧针杆2的第一轴承5，针杆2上下运动时与第一轴承5形成滚动摩擦。本实施例中，所述针杆2与第一轴承5接触的面为削平面，第一轴承5成对对夹针杆2；连接结构良好，第一轴承5与旋转座4同步旋转，带动针杆2旋转，同时与上下运动的针杆2形成滚动摩擦；该结构可使针杆2与梭床同步旋转机构相配合实现同步旋转，从而使缝纫针的缝合方向与设定缝制的线迹始终保持一致，因此缝纫得到的线迹具有紧密、整齐、均匀等优点；有效解决送料机构在送料时产生的推拉对底线和面线的影响，尤其是在缝制不规则线迹时，通过针杆和梭床同步旋转，使面线和底线在勾线位置缝合时受力平衡，缝纫针的缝合方向与设定缝制的线迹始终保持一致，从而保证缝制得到的线迹会非常的紧密、整齐、均匀，与设定缝制的线迹完全吻合。本发明中，所述旋转座4通过第二轴承6组设在针杆上套筒7上，针杆上套筒7与上机壳1固连在一起，旋转座4与针杆电机3传动连接。本实施例中，所述旋转座4为同步带轮座，通过同步带8连接针杆电机3。
本发明所述的针杆同步旋转机构的有益效果是：使用两个第一轴承5夹紧针杆2，保证传动无间隙，把滑动摩擦改进为滚动摩擦，大大降低摩擦力，并且供第一轴承5安装的轴承座安装于同步带轮座上，同步带轮座与针杆上套筒7通过第二轴承6安装在一起，保证了转动部件与针杆的同心度。针杆转动部件通过同步带与驱动电机连接，整套传动为柔性连接，消除了传动噪音。
当然，以上结合实施方式对本发明做了详细说明，只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明的内容并加以实施，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。

Claims (3)

  1. 一种缝纫机针杆同步旋转机构，包括装设在上机壳（1）上的用于插装缝纫针的针杆（2），以及驱动针杆（2）转动的针杆电机（3），其特征在于：所述针杆（2）的上端穿设连接一旋转座（4），并于旋转座（4）上设有夹紧针杆（2）的第一轴承（5），针杆（2）上下运动时与第一轴承（5）形成滚动摩擦；所述旋转座（4）与针杆上套筒（7）固定连接在一起，针杆上套筒（7）通过第二轴承（6）组设在上机壳（1）上，旋转座（4）与针杆电机（3）传动连接，或者，所述旋转座（4）通过第二轴承（6）组设在针杆上套筒（7）上，针杆上套筒（7）与上机壳（1）固连在一起，旋转座（4）与针杆电机（3）传动连接。
  2. 根据权利要求1所述的一种缝纫机针杆同步旋转机构，其特征在于：所述针杆（2）与第一轴承（5）接触的面为削平面，第一轴承（5）成对对夹针杆（2）。
  3. 根据权利要求1所述的一种缝纫机针杆同步旋转机构，其特征在于：所述旋转座（4）为同步带轮座，通过同步带（8）连接针杆电机（3）。
PCT/CN2015/085746 2015-04-02 2015-07-31 一种缝纫机针杆同步旋转机构 WO2016155174A1 (zh)

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