Stitch control method of electronic sewing machine
    1.
    发明授权
    Stitch control method of electronic sewing machine 失效
    电子缝纫机针迹控制方法

    公开(公告)号:US4426946A

    公开(公告)日:1984-01-24

    申请号:US356158

    申请日:1982-03-08

    IPC分类号: D05B3/02 D05B19/12 G05B19/406

    摘要: In a stitch control process of the sewing machine which employs a microcomputer with an electronic memory storing stitch control signals and a needle position control motor and a fabric feed control motor, the microcomputer controls the needle position and the fabric feed control motors at certain rotation phases of the sewing machine. The microcomputer temporarily holds, during the operation of the sewing machine, the needle and feed control data and the feed control amount based on the feed control data which are read out in each phase and calculates the addition of the feed control amount and the needle control amount based on the needle control data which is read out at the following phase. If the calculating result is more than a predetermined value, the microcomputer employs the needle and feed control data read out at the preceding phase instead of the needle and feed control data read out at the following phase to control the feed and needle control motors with a total value of the needle and feed control amounts which is less than the predetermined value.

    摘要翻译: 在采用具有电子存储器存储针迹控制信号的微型计算机和针位置控制电动机和织物供给控制电动机的缝纫机的针脚控制处理中,微型计算机在一定的旋转相位控制针位置和织物进给控制电动机 的缝纫机。 微型计算机在缝纫机的操作期间暂时保持基于在各相中读出的进给控制数据的针和进给控制数据和进给控制量,并计算进给控制量和针控制的相加 基于在下一阶段读出的针控数据的量。 如果计算结果大于预定值,则微计算机采用在前一阶段读出的针和进给控制数据而不是针和在下一阶段读出的进给控制数据来控制进给和针控制马达 针和进给控制量的总值小于预定值。

    Electronic sewing machine
    2.
    发明授权
    Electronic sewing machine 失效
    电子缝纫机

    公开(公告)号:US4315472A

    公开(公告)日:1982-02-16

    申请号:US131357

    申请日:1980-03-18

    IPC分类号: D05B3/02 D05B19/02 G05B19/23

    摘要: When a pulse motor in an electronic sewing machine is to be subjected to a heavy load, the pulse motor is operated at a slower speed in order to cause the pulse motor to operate at a rate in which it has a maximum torque output. For lesser load conditions, pulse motor speed is allowed to increase. Speed control of the pulse motor follows a generally trapezoidal curve, which curve includes a speed-up section and a slow-down section, and may include a flat section. That portion of the generally trapezoidal curve along which motor speed follows is determined by the distance which the pulse motor is required to move.

    摘要翻译: 当电子缝纫机中的脉冲电机承受重负载时,脉冲电动机以较慢的速度运行,以使脉冲电动机以其最大转矩输出的速率运行。 对于较小的负载条件,允许脉冲电机速度增加。 脉冲电机的速度控制遵循大致梯形曲线,该曲线包括加速部分和减速部分,并且可以包括平坦部分。 大致梯形曲线的电动机速度跟随的部分由脉冲电机需要移动的距离决定。

    Electronic pattern control for a sewing machine
    3.
    发明授权
    Electronic pattern control for a sewing machine 失效
    缝纫机电子图案控制

    公开(公告)号:US4141305A

    公开(公告)日:1979-02-27

    申请号:US820393

    申请日:1977-07-29

    摘要: A logic circuit generates in succession the stitch-control data for the successive stitches of a selected stitch pattern. The logic circuit does not store simultaneously all the stitch-control data for all the stitches of all the selectable stitch patterns, in the way done by conventional addressable random-access stitch-pattern memories. Instead, the logic circuit assumes successive states, in response to successive machine-synchronized pulses. In each state it generates, in the sense of bringing into existence for the first time, stitch-control data for the next stitch to be produced, this stitch-control data being derived from data related to a preceding stitch, e.g., the stitch-control data for the preceding stitch. The number of logic elements needed is low compared to that needed for a random-access stitch-pattern memory of the type storing all the stitch-control data for all the stitches of all the selectable patterns.

    摘要翻译: 逻辑电路连续生成用于所选择的针迹图案的连续针迹的针迹控制数据。 通过传统的可寻址随机访问针迹图案存储器,逻辑电路不会同时存储所有可选针迹图案的所有针迹的所有针迹控制数据。 相反,逻辑电路响应于连续的机器同步脉冲而呈现连续的状态。 在每个状态下,在第一次存在的情况下,生成用于要产生的下一针迹的针迹控制数据,该针迹控制数据从与之前的针迹相关的数据导出,例如针迹控制数据, 前一针迹的控制数据。 所需的逻辑元件的数量与存储针对所有可选图案的所有针迹的所有针迹控制数据的类型的随机访问针迹存储器所需的逻辑元件的数量相比较低。

    Pattern stitching speed control system for electronic sewing machines
    6.
    发明授权
    Pattern stitching speed control system for electronic sewing machines 失效
    电子缝纫机图案拼接速度控制系统

    公开(公告)号:US4108093A

    公开(公告)日:1978-08-22

    申请号:US803416

    申请日:1977-06-03

    IPC分类号: D05B3/02 D05B19/02 D05B69/18

    CPC分类号: D05B19/02

    摘要: A drive motor drives a reciprocating sewing needle. A static memory has lateral-control-signal outputs at which it furnishes signals indicating how much the needle should be laterally shifted for each stitch in a selected pattern, and feed-control-signal outputs at which it furnishes signals indicating how much a work feeding device should feed the work for each stitch of the pattern. An addressing circuit response to a pattern selector applies to the static memory a repeated sequence of address signals, causing the memory to produce repeated sequences of lateral-control and feed-control signals at its outputs. The first address signal in any of the repeated sequences of address signals causes the static memory to produce at its output a first lateral-control signal constituting a maximum-speed-establishment signal, and a first feed-control signal constituting a maximum-permissible-speed signal. A latch receives the feed-control signals but does not in general register them, except when activated. A detector receives the lateral-control signals, and in response to the maximum-speed-establishment signal activates the latch which then registers the maximum-permissible-speed signal. A motor speed limiter limits the speed of the drive motor in dependence upon the signal registered by the latch.

    摘要翻译: 驱动电机驱动往复缝纫针。 静态存储器具有横向控制信号输出,在该控制信号输出端提供指示针对所选择的图案中的每个针脚应该横向偏移多少针的信号,以及馈送控制信号输出,在该输入信号输出端提供指示工作进给多少的信号 设备应为每个针迹的针迹馈送工作。 对模式选择器的寻址电路响应适用于静态存储器重复的地址信号序列,导致存储器在其输出端产生重复的横向控制和馈送控制信号序列。 任何地址信号的重复序列中的第一地址信号使得静态存储器在其输出处产生构成最大速度建立信号的第一横向控制信号,以及构成最大允许频率的第一馈送控制信号, 速度信号。 闩锁接收馈送控制信号,但通常不会注册它们,除非激活。 检测器接收横向控制信号,并且响应于最大速度建立信号激活锁存器,然后锁存器登记最大允许速度信号。 电机限速器根据锁存器登记的信号来限制驱动电机的速度。

    Electronic sewing machine with a feed control device
    8.
    发明授权
    Electronic sewing machine with a feed control device 失效
    电子缝纫机配有进给控制装置

    公开(公告)号:US4276840A

    公开(公告)日:1981-07-07

    申请号:US47631

    申请日:1979-06-11

    摘要: A sewing machine which utilizes a pulse motor to vary feed rate in steps is equipped with a microcomputer that causes the pulse motor to operate in a repeated sequence in which two adjacent feed rates are alternated. By operating the computer in accordance with a manually-operable control, an overall feed rate can be produced which is intermediate the two adjacent feed rates.

    摘要翻译: 利用脉冲电机来逐步改变进给速率的缝纫机装备有微计算机,其使得脉冲电动机以重复的顺序操作,其中两个相邻进给速率交替。 通过根据可手动操作的控制来操作计算机,可以产生总体进给速率,该进给速率在两个相邻进给速率之间。

    Sewing machine with feed dog dropping control system
    9.
    发明授权
    Sewing machine with feed dog dropping control system 失效
    缝纫机配有喂狗控制系统

    公开(公告)号:US4236469A

    公开(公告)日:1980-12-02

    申请号:US6685

    申请日:1979-01-26

    摘要: A sewing machine including stitch forming device, electrically driven means for driving the needle and the feed dog, a static memory to control the electrically driven means and a pattern selecting arrangement. The electrically driven means comprise a pulse motor for controlling a horizontal feeding amount of the feed dog and a clutch solenoid operatively connected to a shaft of the pulse motor. The device is provided with a feed control arrangement having an operating member to actuate the position of the feed dog. The clutch solenoid is operatively connected to the operating member and is energized in response to a stitch signal from the static memory to define the position of the feed dog in accordance with a selected pattern.

    摘要翻译: 一种缝纫机,包括线圈形成装置,用于驱动针和馈送狗的电驱动装置,用于控制电驱动装置的静态存储器和模式选择装置。 电驱动装置包括用于控制进给爪的水平进给量的脉冲马达和可操作地连接到脉冲马达的轴的离合器电磁阀。 该装置设置有具有操作构件的进给控制装置,以致动进给狗的位置。 离合器螺线管可操作地连接到操作构件并且响应于来自静态存储器的针脚信号而被激励,以根据所选择的模式来限定进给狗的位置。

    Programmed electronic sewing machine
    10.
    发明授权
    Programmed electronic sewing machine 失效
    程控电子缝纫机

    公开(公告)号:US4086862A

    公开(公告)日:1978-05-02

    申请号:US715691

    申请日:1976-08-19

    摘要: An arrangement for forming patterns made up of stitches includes a memory, a stitch-forming apparatus, an addressing device and a synchronizing device. The memory has a plurality of outputs and a plurality of address signal inputs and is comprised of a plurality of storage units connected to the inputs and outputs and addressable by address signals applied to the address signal inputs of the memory. The stitch-forming apparatus has a plurality of stitch control signal inputs connected to outputs of the memory and operative for producing any of a plurality of different stitches in dependence upon the signals produced at the outputs of the memory. The addressing device is operative when activated for applying to the address signal inputs of the memory next-address signals derived from the signals produced at the outputs of the memory itself. The synchronizing device activates the addressing device repeatedly and in synchronism with the operation of the switch-forming apparatus.

    摘要翻译: 用于形成由线迹构成的图案的布置包括存储器,缝合形成装置,寻址装置和同步装置。 存储器具有多个输出和多个地址信号输入,并且包括连接到输入和输出的多个存储单元,并且可通过施加到存储器的地址信号输入端的地址信号进行寻址。 缝合形成装置具有连接到存储器的输出的多个针脚控制信号输入,并且根据在存储器的输出处产生的信号而产生多个不同的针脚中的任何一个。 当激活该寻址装置时,该寻址装置可用于将存储器本身的输出端产生的信号导出的存储器下一个地址信号的地址信号输入端施加。 同步装置重复地和与开关形成装置的操作同步地激活寻址装置。