WO1999047741A1 - Controleur de machine a coudre - Google Patents

Controleur de machine a coudre Download PDF

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Publication number
WO1999047741A1
WO1999047741A1 PCT/JP1998/001086 JP9801086W WO9947741A1 WO 1999047741 A1 WO1999047741 A1 WO 1999047741A1 JP 9801086 W JP9801086 W JP 9801086W WO 9947741 A1 WO9947741 A1 WO 9947741A1
Authority
WO
WIPO (PCT)
Prior art keywords
sewing machine
pulley
motor
shaft
angle
Prior art date
Application number
PCT/JP1998/001086
Other languages
English (en)
Japanese (ja)
Inventor
Yasunobu Harada
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP1998/001086 priority Critical patent/WO1999047741A1/fr
Publication of WO1999047741A1 publication Critical patent/WO1999047741A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position

Definitions

  • the present invention relates to an improvement in a control device for a sewing machine, and more particularly, to a control device for a sewing machine that detects a position of a sewing machine needle using an encoder that detects a rotation angle of a motor that drives the sewing machine needle.
  • a conventional sewing machine will be described with reference to FIGS. 5 and 6, the sewing machine rotates the motor 7 based on the depression of the pedal 2, drives the sewing machine needle 5 up and down, and gives a control command and the like to the drive unit 1. It comprises an operation unit 30 and a control unit 40 that drives and controls the drive unit 1 based on a command from the operation unit 30.
  • the drive unit 1 is engaged with a pulley 19 on the sewing machine connected to a shaft of the motor 7 via a timing belt 17 on a pulley 15 on the sewing machine connected to the shaft of the sewing machine.
  • An encoder 9 as a rotation angle detecting means for detecting the rotation angle of the motor 7 is coupled to the shaft of the motor 7, and a needle position detector 1 for detecting a predetermined position where the sewing machine needle 5 is raised or lowered. 3 is connected to the main shaft of the sewing machine.
  • the operation unit 30 has a display unit 36 composed of a liquid crystal display for displaying the operation content and the like, and the control unit 40 generates a control command for generating a command for controlling the motor 7, the encoder 9, and the like. And a motor drive unit 60 that obtains a signal for driving the motor 7 based on a signal from the control command generation unit 50.
  • the control command generation section 50 includes an interface section (hereinafter referred to as IZF) 51 as a connection section for transmitting and receiving electrical signals to and from the needle position detector 13 and the operation section 30, and an electrical connection section for the encoder 9.
  • IZF interface section
  • IZF 52 as a connection unit for transmitting and receiving signals
  • CPU 53 for overall control
  • the drive unit 60 includes an I / F 57 as a connection unit for transmitting and receiving an electric signal.
  • the motor drive unit 60 includes an IZF 57 for the control command generator 50 and an IZF 62 for transmitting and receiving electrical signals, and an I / F 64 for transmitting an electrical signal to the motor 7. ing. It should be noted that connectors 70 and 72 for detachably connecting the output line of the motor 7 and the output line of the encoder 9 to the output line of the control unit 40 are provided.
  • the disk (not shown) for detecting the upper position inside the needle position detector 13 is attached to the main shaft of the sewing machine, so that it rotates at high speed.
  • the sewing machine is apt to break down, and the sewing machine must be driven after the position of the disk is adjusted, which is complicated. Disclosure of the invention
  • the present invention has been made to solve the above-described problem, and has as its object to provide a control device for a sewing machine that can easily detect a position of a process of raising or lowering a sewing needle.
  • a sewing machine control device comprising: a motor for driving a main shaft of a sewing machine; a first pulley coupled to the shaft of the motor; and a main shaft of the sewing machine.
  • Angle detecting means for detecting the rotation angle of the motor;
  • calculating means for calculating the rotation angle of the sewing machine shaft from a reference point based on the detected value of the angle detecting means; and Control means for controlling the motor.
  • a motor for driving the main shaft of the sewing machine a first pulley coupled to the shaft of the motor, and a second pulley coupled to the main shaft of the sewing machine are provided.
  • a pulley, a belt for rotating the second pulley by rotating the first pulley, angle detecting means for detecting a rotation angle of the motor, and a detection value of the angle detecting means are provided.
  • a motor for driving the main shaft of the sewing machine a first pulley connected to the shaft of the motor, and a second pulley connected to the main shaft of the sewing machine are provided.
  • a pulley, a belt for rotating the second pulley by rotating the first pulley, angle detecting means for detecting a rotation angle of the motor, and a detection value of the angle detecting means are provided.
  • Calculating means for calculating the angle of the sewing machine shaft from a reference point; input means for inputting first setting data for changing a setting position of a rising or lowering process of the sewing machine needle; Storage means for storing second setting data of the same type as the first setting data; reading out the second setting data from the storage means; and storing the first setting data and the second setting data in the storage means.
  • Designation means for designating a predetermined position of the ascending or descending process of the sewing needle; computing means for computing a rotation angle of the sewing machine shaft at the position of the sewing needle designated by the designation means; designation of the designation means Storage means for storing the operation value of the operation means corresponding to the predetermined position, and control means for controlling the motor based on the storage value of the storage means. It is.
  • the setting data is a ratio between the motor pulley and the sewing machine pulley.
  • FIG. 1 is a block diagram of a control device of a sewing machine showing an embodiment of the present invention.
  • FIG. 2 is a flowchart showing the operation of the control device of the first sewing machine.
  • FIG. 3 is a curve diagram showing output values of a sewing needle and an encoder.
  • FIG. 4 is a flowchart showing the operation of a control device of a sewing machine according to another embodiment of the present invention.
  • FIG. 5 is a front view showing the entire sewing machine.
  • FIG. 6 is a block diagram of a conventional sewing machine control device. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a block diagram of a control device of a sewing machine showing an embodiment of the present invention.
  • the operation unit 30 includes, as shown in FIG. 3, a transfer switch 101 for shifting to a mode for designating a position of the ascending or descending process of the sewing needle 5, and the position of the sewing needle 5. Holds the specified switch 103 to be specified, the keypad 105 as an input means for inputting setting data to change the setting position of the sewing machine needle 5, and the memory contents of the memory 55 as a storage means Battery 110 to be used.
  • the CPU 53 reads the stored pulse number Pe (n-1) of the encoder 9 from the memory 55, and reads the current pulse number Pe of the encoder 9 from the memory 55. From (n), the difference Pe of the number of pulses is calculated by Pe (n) -one Pe (n-1) (step 200).
  • the CPU 53 calculates the rotation angle Md of the sewing machine shaft by the following equation (1) (step 202).
  • the CPU 53 adds the angle UP (n-1) of the sewing machine axis from the previous position, for example, as the reference point of the sewing machine needle 5, and the Md obtained above, and calculates the current position from the current upper position.
  • the angle UP (n) of the sewing machine axis is calculated by UP (n-1) + Md (step 204).
  • the CPU 53 determines whether or not the transition switch 101 of the mode for designating the position of the ascending or descending process of the sewing needle 5 is ON (step 2 1 2). Then, the mode shifts to the designation mode for designating the position of the sewing needle 5, and the display section 36 displays “UP SET” indicating this mode (step 2 14). In accordance with the position, the CPU 53 determines whether or not the designated switch 103 is ON (step 2 16) .If N, the angle of the sewing machine shaft at this position is calculated and obtained. The data is stored in the memory 55 (steps 2 18). The motor drive unit 60 controls the drive of the motor 7 based on the calculated value or the stored value read from the memory 55.
  • step 212 If the transition switch 101 is OFF in step 212, this flowchart is terminated, and if the designated switch 103 is OFF in step 211, step 212 is skipped. repeat.
  • the pulley ratio as the first setting data for which the setting position of the sewing machine needle 5 must be changed is input from the keypad 105 (step 300). Then, it is determined whether or not the pulley ratio as the setting data and the pulley ratio as the second setting data read from the memory 55 match (step 302). Here, if they match, this flowchart ends.
  • the CPU 53 prohibits the start of mode 7 (step 304), the display section 36 displays "UP SET” (step 306), and the CPU 53 Determines whether or not the designated switch 103 for designating the position of the sewing needle 5 has been turned ON (step 308). If it is ON, the display unit 36 displays "UPOK” (step 310) ).
  • CPU 5 3 reads the pulse of the encoder 9 via the I / F 52, calculates the angle of the sewing machine shaft at the position of the sewing machine needle 5 in the same manner as in the first embodiment, and stores this angle in the memory 55. (Step 312) The most recently input pulley ratio is stored in the memory 55 (Step 314).
  • the motor drive section 60 controls the drive of the motor 7 based on the stored value read from the memory 55.
  • the rotation angle of the sewing machine shaft is calculated by the ascending or descending position of the sewing machine needle 5 and the encoder 9. Any setting data may be used as long as the change does not match the value.
  • the motor that drives the main shaft of the sewing machine, the first pulley connected to the motor shaft, and the second motor that is connected to the main shaft of the sewing machine
  • the second pulley the belt that rotates the second pulley by rotating the first pulley
  • angle detection means for detecting the rotation angle of the motor
  • a value detected by the angle detection means And a control means for calculating the rotation angle of the sewing machine shaft from the reference point, and a control means for controlling the motor based on the calculation value of the calculation means.
  • a motor for driving a main shaft of the sewing machine, a first pulley connected to the shaft of the motor, and a second pulley connected to the main shaft of the sewing machine.
  • a motor for driving a main shaft of the sewing machine a first pulley connected to the shaft of the motor, and a main shaft of the sewing machine
  • a second pulley a belt that rotates the second pulley by rotating the first pulley
  • angle detection means for detecting a rotation angle of the motor
  • a detection value of the angle detection means A calculating means for calculating the angle of the sewing machine shaft from a reference point; an input means for inputting first setting data for changing a setting position of the ascending or descending process of the sewing machine needle;
  • Storage means for storing the same type of second setting data, and reading out the second setting data from this storage means, and determining whether the first setting data and the second setting data match.
  • the comparison means for comparing whether or not In the case of misalignment, a designation means for designating a predetermined position of the ascending or descending process of the sewing needle, a computing means for computing a rotation angle of the sewing machine shaft at the position of the sewing needle designated by the designation means, and a designation of the designation means Storage means for storing the operation value of the operation means corresponding to the predetermined position, and control means for controlling the motor based on the storage value of the storage means. Setting where the position must be changed Even if the setting is changed, the effect is that the accurate position of the ascending or descending process of the sewing machine needle can be detected.
  • the setting data is the ratio of the pulley of the motor and the pulley of the sewing machine, if the pulley ratio is changed, Since the setting of the ascending or descending process of the sewing machine needle is reset, an accurate sewing machine needle position can be detected.
  • control device for a sewing machine is suitable for being used to control a motor by specifying a predetermined position in a process of ascending or descending a sewing needle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

La présente invention concerne un contrôleur de machine à coudre servant à détecter une position de l'aiguille. Ce contrôleur comporte une première poulie (19) couplée sur l'arbre d'un moteur (7) entraînant l'axe de la machine à coudre. Une seconde poulie (13) est couplée à l'axe de la machine à coudre. Une courroie (17) assure la transmission à la seconde poulie de la rotation de la première poulie. Des organes de désignation (103) permettent de désigner la position de l'aiguille comme position de référence. Un détecteur d'angle (9) assure la détection de l'angle de rotation du moteur. Un calculateur (53) a pour fonction de calculer l'angle de rotation d'axe de la machine à coudre. En l'occurrence, le calcul de la position de l'aiguille se fait à partir de la position d'aiguille désignée et de l'angle de rotation du moteur détecté, sans utiliser de détecteur de position de l'aiguille.
PCT/JP1998/001086 1998-03-16 1998-03-16 Controleur de machine a coudre WO1999047741A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/001086 WO1999047741A1 (fr) 1998-03-16 1998-03-16 Controleur de machine a coudre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/001086 WO1999047741A1 (fr) 1998-03-16 1998-03-16 Controleur de machine a coudre

Publications (1)

Publication Number Publication Date
WO1999047741A1 true WO1999047741A1 (fr) 1999-09-23

Family

ID=14207783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/001086 WO1999047741A1 (fr) 1998-03-16 1998-03-16 Controleur de machine a coudre

Country Status (1)

Country Link
WO (1) WO1999047741A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06205888A (ja) * 1992-12-28 1994-07-26 Juki Corp ミシンの制御装置
JPH09276580A (ja) * 1996-04-09 1997-10-28 Matsushita Electric Ind Co Ltd ミシン駆動装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06205888A (ja) * 1992-12-28 1994-07-26 Juki Corp ミシンの制御装置
JPH09276580A (ja) * 1996-04-09 1997-10-28 Matsushita Electric Ind Co Ltd ミシン駆動装置

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