摘要:
An embroidering machine which comprises a device for adjusting a size of a selected pattern, a device for storing the adjusted size, and an arrangement for storing upper and lower critical sizes of the selected pattern. The embroidering machine according to the invention further comprises a discriminating device for determining if the adjusted size of the selected pattern is larger or smaller than the upper or lower critical size of the selected pattern. There is further provided a control unit which, in response to determination that the adjusted size of the selected pattern is larger or smaller than the upper critical size of the selected pattern or larger or smaller than the lower critical size of the selected pattern, calculates data for controlling the positions of a fabric holding frame carrying a cloth to be embroidered with respect to a vertically reciprocating needle.
摘要:
An automatic pattern sewing machine includes a memory for storing blocks of data for controlling the sewing of an applique piece on a base cloth. A separate sheet of paper is printed with a set of patterns corresponding to different sizes of an applique pattern of one type and with corresponding identification marks. The applique piece is prepared in conformity with the printed pattern of the selected size and the assigned printed identification mark is entered into the machine by a selecting key to activate a coordinate transforming means which adjust the stored data to the selected size of the pattern. The applique piece is then stitched along its perimeter onto the base cloth according to the adjusted information.
摘要:
A method of setting visually balanced spacing between characters to be embroidered by an embroidering sewing machine in which character forming information which is stored with a preset reference size is successively read out and the characters are displayed and aligned between two parallel line segments. The aligned characters are first arranged in such a manner that the contours of consecutive characters contact each other at least at one point. Then the space areas between characters are calculated and a maximum area of the calculated space areas is set as a reference space area; then increasing the distances between the characters such that the other space areas between the characters become equal to the reference space area; and finally arranging the characters at spacings which have been increased by a computed minimum distance.
摘要:
With respect to a printer which carries out printing on a paper by impact of a wire of a printing head repeating movement, a sound proof device of a printer prevents the paper from transmitting fluttering under amplification to the paper sent to an entrance of the printer, and does not cause inconvenience to sending of the paper.
摘要:
An automatic embroidery frame drive device used in an automatic embroidery sewing machine which produces embroidery stitches on a fabric held by an embroidery frame comprising a 1st, a 2nd and a 3rd electromagnetic actuator which is disposed at a stationary side of the embroidery frame drive device and a plurality of wires for transmitting movement of said electromagnetic actuators, so that the embroidery frame is controlled in X and Y directions.
摘要:
An impact type color printer is provided a control circuit which produces a random digit signal each time the printer is connected to a power supply, according to which random digit signal a platen is rotated so that one of plural impact sections axially arranged in each ink saturated member of different color is selected at random and positioned just opposite to a printing head to be subjected to impact thereby for printing operation.
摘要:
A pattern selecting system is disclosed in which a single set of push buttons is utilized to select a first group of patterns each of which corresponds to a particular push button and a second group of patterns indicated by a series of two figure numbers.
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:
A single motor controls needle swing and fabric feed in a sewing machine. The motor is connected to a transmission which alternately locks either the needle swing or the fabric feed while releasing either the fabric feed or the needle swing as the case may be. The motor is operated in accordance with a predetermined program by an electronic control system. Multiplexers are used in order to alternately transmit feed data and needle control data to the motor. Two embodiments are taught: one embodiment being purely digital in nature, and the other embodiment including an analog feedback loop.
摘要:
The stitch-forming instrumentalities of a sewing machine are subject to small mechanical operational errors due to play in the motion-transmitting connections. The invention overcomes this problem by providing two springs which are respectively connected to a transmission element coupled to a driven mechanism of the machine, and to a drive. The two springs counterbalance one another with respect to the drive.