Classifications

• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
  • D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B19/00—Programme-controlled sewing machines

Definitions

• pivoting design of the material holder increases the technical effort of the feed device.
• a pivotable sewing material holder is particularly disadvantageous in the case of large pieces of sewing material, since these are subject to additional displacement forces during pivoting movements and require a larger contact surface.
• Fig. ⁇ 1 is a side view of a sewing machine
• a frame is shown, the table top (1) is used to hold a sewing machine (2).
• the housing of the sewing machine (2) consists of a base plate (3), a stand (4), an upper arm (5) with a swivel-mounted head (6) and a lower arm (7) with a swivel-mounted hook bearing (8).
• a swiveling Through the head (6) and the gripper bearing (8) a swiveling
• the head (6) carries a needle bar (10) with a needle (11) and a presser device (12).
• a throat plate (13) (FIG. 2) is received in the base plate (3).
• a shaft (14) is mounted on the upper part of the stand (4) and a shaft (15) on the lower part. Both shafts (14 and 15) are driven by a stepper motor (16) which is controlled by a control device (not shown) of the sewing machine (2).
• a control device not shown
• a pulley (17) is attached to the upper end of the shaft (14) and is connected via a belt (18) to a pulley (19) attached to the head (6) in a rotationally fixed manner.
• a belt wheel (20) at the lower end of the shaft (15) is via a belt (21) with a
• One end of the output shaft (63) has a pin (64) formed eccentrically to the shaft axis.
• the pin (64) is gripped by one end of an eccentric rod (65), the other end of which is connected via a pin (66) to a handlebar stitch actuator (67) designed in the usual way.
• a rocker (68) also acts on the pin (66), the other end of which is articulated to the pin (36) of the needle bar carrier (31).
• a feed device (69) shown in FIG. 4 is arranged on the table top (1).
• the rotation of the motor shaft (25) drives the toothed belt wheel (26), the rotation of which is used via the eccentric rod (28) to drive the needle rod (10).
• the rotary movement of the toothed belt wheel (26) is used to drive the toothed belt wheel (45) and thus the shaft (46) via the toothed belt (44).
• the needle bar carrier (31) runs through only half the stitch width during a needle bar stroke. With this setting, the needle (11) enters and exits the material at both reversal points of the needle bar carrier (31).
• the sewing machine (2) then works with zigzag operation for zigzag seams.
• the sewing material holder (71) is moved by the feed device (69) by correspondingly controlling the stepper motors (74 and 84) from its rest position shown in FIG. 4 to the sewing position, where the point at which the seam is to begin is under the needle (11).
• the head (6) and hook bearing (8) of the sewing machine (2) are in a neutral starting position as shown in FIG. 1, in which the transverse movement of the needle bar carrier (31) takes place in a plane perpendicular to the plane of the drawing. Then the sewing machine (2) is switched on and the gear (49) of the seam to be formed is adjusted accordingly.
• the head (6) is pivoted by appropriate control of the stepping motor (16) via the belt (18) so that the transverse movements of the

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=6351674

Family Applications (1)

Country Status (7)

Families Citing this family (8)

Family Cites Families (9)

• 1988
  • 1988-04-09 DE DE3811897A patent/DE3811897A1/de active Granted
• 1989
  • 1989-03-18 KR KR1019890702285A patent/KR900700676A/ko not_active Application Discontinuation
  • 1989-03-18 JP JP1503195A patent/JPH04504805A/ja active Pending
  • 1989-03-18 US US07/585,147 patent/US5095834A/en not_active Expired - Fee Related
  • 1989-03-18 BR BR898907358A patent/BR8907358A/pt unknown
  • 1989-03-18 EP EP89903479A patent/EP0415933A1/de not_active Ceased
  • 1989-03-18 WO PCT/EP1989/000293 patent/WO1989009851A1/de not_active Application Discontinuation

Non-Patent Citations (1)

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