Control device for sewing machine

• US 5,144,900 A
• Filed: 01/19/1990
• Issued: 09/08/1992
• Est. Priority Date: 01/20/1989
• Status: Expired due to Term

• Current Assignee: JUKI Corporation
• Original Assignee: JUKI Corporation
• Inventors: Takahashi, Yoshimi
• Primary Examiner(s): Nerbun, Peter
• Application Number:
  US07/468,858
• Time in Patent Office: 963 Days
• Field of Search: 112/121.11, 112/275, 112/277, 112/239, 112/237, 112/235, 112/300, 112/285, 112/220, 364/470
• US Class Current: 112/470.04
• CPC Class Codes: D05B 69/20 Control devices responsive to the number of stitches made
• CPC Class Codes: D05B 69/22 Devices for stopping drive when sewing tools have reached a predetermined position electric motor control systems in general H02P

Abstract

A control device for sewing machines which includes a drive system controller which controls each of numerous driving units provided in the sewing machine and which is connected to an optional command system controller that is positioned outside of the sewing machine. Thus, a control code from the outside command system may be input and decoded to control the drive system controller.

Claims

1. A sewing system including a driving system provided in a sewing machine, a control system being arranged apart from said sewing machine and an interface for connecting said driving system and said control system;

said driving system comprising

a plurality of mechanisms including a thread cutting mechanism, a wiper mechanism and a presser-foot mechanism,

a motor of variable speed for driving said sewing machine,

a plurality of driving means for driving respectively each of said mechanisms, and

a speed control means for controlling the speed of said motor;

said control system coding a mode setting command and an operation execution command as a control code and generating said control code, said mode setting command for setting a driving condition for each of said driving means and said speed control means, said operation execution command for sequentially conducting predetermined sewing operations; and

said driving system further having decoding means for decoding said control code and a memory for registering the decoded mode setting command, whereby said driving system drives said driving means and said speed control means according to the decoded mode setting command recorded in said memory and the decoded operation execution command.

2. A sewing system as set forth in claim 1, wherein said driving system includes a status code generating means for sensing respective status of each of said mechanisms and said motor and generating a status code as a result of said sensing, and wherein said control system receives said status code and generates said operation execution command according to said status code.

3. A sewing machine as set forth in claim 1 wherein said command system comprises a command system controller and a control panel connected to said command system controller to output a control code to said drive system controller in response to the input from said control panel to control said drive system controller.

4. The sewing machine as set forth in claim 1 wherein said command system controller is responsive to a pedal.

5. A sewing machine as set forth in claim 1 wherein said command system includes a personal computer and a keyboard connected thereto to output said control code to said drive system controller.