Classifications

• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B73/00—Casings
  • D05B73/04—Lower casings
• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B21/00—Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. programme-controlled for sewing collars, for attaching pockets

Definitions

• the invention relates to a device for embroidering sheet-like sewing material according to the preamble of claim 1.
• the sheet-like sewing material ie the embroidery base
• the embroidery frame is moved by a drive which can move the embroidery frame in the X and Y directions in accordance with the embroidery pattern to be produced.
• the drive of the embroidery frame is located in a housing that can be docked onto the free arm of the sewing machine. This is connected at the back to the free arm and / or base plate by a coupling that forms the mechanical connection.
• the embroidery hoop that can be moved by the drive shows Usually a width that corresponds approximately to the distance between the sewing machine stand and the needle and a length that is at most twice the width.
• This relatively small embroidery area which is limited by the conditions of the sewing machine, is not suitable for larger, coherent embroidery patterns; it is primarily intended for embroidering monograms or single subjects.
• single-purpose embroidery machines and in special sewing machines which have an integrated drive part for the embroidery frame in the area of the machine stand it is known to use embroidery frames with two or four embroidery fields. These embroidery frames each have two adjacent frame couplings with which the rectangular embroidery frame can be connected to the embroidery machine or the embroidery frame drive at two adjacent points; the square embroidery hoop with four embroidery fields has four couplings and can therefore be coupled at four points for processing a quadrant.
• the recordings can also be moved and adjusted continuously along the embroidery frame.
• the embroidery frame drive members are arranged in the area of the machine stand, ie behind the needle. This enables the coupling of large embroidery frames that protrude far beyond the needle.
• EP-A2-0877112 a device for embroidering tubular material is known, in which the embroidery device, which carries and moves the embroidery frame, is spaced apart from the forearm of the sewing machine.
• the spacer claimed there is therefore used to bridge the gap between the base of the sewing machine and the embroidery device 21 and to hold the embroidery device in the spaced-apart position and to ensure the electrical connections. It is not possible to use multi-sized embroidery frames on this device, because on the one hand the distance created to expose the free arm is very small and on the other hand, if the distance were increased, the embroidery frame would not find any support on the work and sewing surface or even get stuck in the spaces would.
• the object of the present invention is to provide an embroidery hoop drive for base and free arm sewing machines, with which embroidery hoops with one to multiple standard embroidery surfaces can be driven.
• the interposition of a distance adapter between the free arm or the base of the sewing machine and the embroidery device with the embroidery frame drive arranged therein makes it possible to use the available space between the needle axis and the stand of the sewing machine to which the free arm is attached in its full size as a maneuvering space to use the embroidery hoop.
• the accessory box in which the sewing utensils can be accommodated and which, if no narrow tubular parts are attached to the forearm, is attached to the distance adapter.
• the free-arm sewing machine 2 shown in FIG. 1 is not explained in detail, since its structure is sufficiently known from the prior art and is irrelevant to the subject matter of the invention. In addition, only the parts of the sewing machine 2 necessary for the explanation of the invention are designated by reference numerals and explained in more detail.
• the free-arm sewing machine there is no space under the work and sewing surface of the plinth sewing machine.
• a table surface on which the stand for the upper arm is placed serves as a work and sewing surface.
• the reference numeral 1 designates the sewing machine housing, which is placed on a base plate 5 and has an essentially L-shaped shape.
• the free arm 3 is formed on the vertical stand 4 of the machine housing 1 at a distance from the base plate 5.
• the gripper is driven, not visible, below the tap hole 7.
• a needle 11 is inserted above the tap hole 7 on the needle bar 9.
• a screen 13 is shown schematically as a rectangle.
• a track ball 15 is provided.
• the assigned actuation keys are designated 16. Another row of keys 17 is used to select special functions. All the elements necessary for the thread guide and the thread are not shown because they are not necessary for the description of the invention and its understanding and their design has no influence on the invention.
• An embroidery device 21 connects to the front end 19 of the free arm 3. The latter also abuts the back 23 of the free arm 3 and is mechanically connected to the machine 2 by coupling means, not shown.
• an embroidery frame carrier 25 is mounted so that it can be driven in the X direction.
• An embroidery frame 27 is attached to the embroidery frame carrier 25 so as to be movable in the Y direction.
• a possible design of the drive elements for the embroidery frame 27 is described in German utility model 29614512 Ul.
• Various other drive means for the X / Y movements of an embroidery frame are well known from the prior art and are therefore not explained in detail.
• the embroidery frame 27 can be moved in a known manner on a programmable path by means of a correspondingly designed control, not described or shown in detail.
• FIG. 4 which has the inventive features, a spacer adapter 29 is now inserted between the embroidery device 21 and the free arm 3, which causes the embroidery device 21 to lie in front of the sewing machine 1 in the longitudinal direction of the free arm 3, ie in the X direction comes.
• This shift by the amount R1 makes it possible to place an embroidery frame 27 of twice the edge length as that in FIG. 2 on the embroidery device 21.
• the needle 11 can penetrate into the middle of the embroidery area within the embroidery frame 27 and, viewed in the Y direction, machine the entire quadrant A.
• the embroidery frame 27 is connected to the embroidery device for processing the first quadrant "A" at the point K I by a frame coupling 28 (FIG. 7).
• the embroidery frame 27 is attached at the point K II (FIG. 8). This results in a shift of the embroidery frame 27 in the Y direction.
• FIG. 9 shows the situation in which the embroidery frame 27 is rotated by 180 ° around its center and the third quadrant “C” is processed.
• the embroidery frame 27 is now connected to the embroidery device 21 at the fastening or coupling point K III .
• the embroidery frame 21 is connected at the point K IV (FIG. 10).
• the adjustment of the embroidery frame 27 under the needle 11 after the coupling is done electronically by the control or by a mechanical adjustment.
• the embroidery device 21 is fastened by the distance adapter 29 in the X direction by the amount R 2 from the free arm 3. There is now no direct contact between the embroidery device 21 and the free arm 3.
• the distance adapter 29 comprises the free arm 3 on three sides. Due to this additional lateral distance, a correspondingly larger embroidery frame 27 can be used.
• the embroidery device 21 is distanced from the free arm 3 both in the X and Y directions by the amounts R 1 and S 1 .
• the distance adapter 29 is preferably connected to the embroidery device 21 by means of first coupling means on the free arm 3 and / or on the base plate and by means of second coupling means.
• the two coupling means are not visible.
• the energy supply for the drives in the embroidery device 21 can take place through said coupling means or via a cable of the embroidery device 21.
• the distance adapter 29 also serves as an accessory box, or the accessory box usually supplied with the sewing machine 2, the surface of which - connected to the free arm 3 - increases the sewing area, serves as a distance adapter 29.
• the Accessory box with the coupling means for the embroidery device or the distance adapter 29 must have a lid, a drawer or a rotating drawer and contain the corresponding holders for the accessories inside.
• the embroidery device lies on a mounting plate 29 'arranged on the side of the distance adapter 29. This makes it possible to attach the embroidery device 21 to sewing machines 1 in which the stitch plate is higher than the surface of the (conventional standard) embroidery device 21.
• the distance adapter 29 has a foot plate 29 ′′ in its area surrounding the sewing material support with the needle plate. This makes it possible to place smaller sewing machine models, in which the sewing material support is lower than the surface of the embroidery device 21, on the foot plate 29 ′′.
• the receiving plate 29 'and the foot plate 29 can be part of the spacer adapter 29 or can be attached to it.

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

Applications Claiming Priority (2)

Publications (2)

Family

ID=4459831

Family Applications (1)

Country Status (5)

Families Citing this family (2)

Family Cites Families (16)

• 2001
  • 2001-01-04 TW TW090100166A patent/TW504529B/zh not_active IP Right Cessation
  • 2001-01-05 DE DE50100584T patent/DE50100584D1/de not_active Expired - Lifetime
  • 2001-01-05 EP EP01810010A patent/EP1122350B1/de not_active Expired - Lifetime
  • 2001-01-24 US US09/768,698 patent/US6655305B2/en not_active Expired - Lifetime
  • 2001-02-02 JP JP2001026999A patent/JP2001239085A/ja active Pending

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