JP2002000982A - Sewing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing equipment in which the way that the resulting cutting edge extends or pattern may be change regarding the way that the resulting seams extend and their mutual interval. SOLUTION: The sewing equipment comprises a cutting device (28) having the second cross carriage (31) attached to a sewing machine (2). Driving system (6, 11 and 21) and the driving systems (35, 40, 48 and 55) of the cutting device (28) are controlled by a programmable common control device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine having a stand, a sewing machine arranged on the stand, a sewing material holder for holding a sewing material portion during a sewing process, and a cross carriage. Wherein the sewing machine has a needle which can be reciprocated in the z direction by a z prime mover, and the cruciform carriage is used for mutual displacement of the sewing machine and the sewing material portion in an xy plane existing perpendicular to the z direction. Has an x prime mover and a y prime mover.

[0002]

BACKGROUND OF THE INVENTION Such sewing equipment is disclosed in U.S. Pat.
DE 3546238 A1 (corresponding to 696242)
In this installation, one or more sewing material holders are fixedly mounted on a machine stand, while the sewing machine is displaceable in the xy plane while creating a seam on a cruciform carriage. Such a sewing machine is furthermore compatible with U.S. Pat. No. 4,809,627.
E 372002 A1 and (US Pat. No. 5,693,731)
No. 1 (corresponding to No. 1). In these sewing machines, the sewing material holder is displaced in the xy plane while creating the seam with the sewing material part retained therein, while the sewing machine is fixedly arranged on the stand.

From DE-PS 1 485 134 (corresponding to US Pat. No. 3,376,836), a sewing machine with a sewing path copying device is known, which is equipped with an edge cutting device. The edge cutting device is not adjustable relative to the needle, i.e., the cutting edges produced by the device are equally spaced with respect to the seam.

[0004] From DE-PS 1 904 385 (corresponding to US Pat. No. 3,620,112), a cutting assembly is known for cutting loosely cut material from textiles. The cutting unit is guided by a guide system with a template.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sewing apparatus which can be varied with regard to the length of the cutting edge to be produced or the length of the seam where the pattern is to be produced and their mutual spacing. is there.

[0006]

According to the invention, this object is achieved by the features of claim 1. The cutting unit is arranged on a cruciform carriage, and the prime mover for displacing the sewing machine and the sewing material holder relative to each other on the one hand and the prime mover for displacing the cutting unit with respect to the needle on the other are common programmable. The essence of being controllable by the controller is central. This makes it possible for the cutting unit and its blade to be completely independent of the way in which the seam should be stretched. This makes it possible, in effect, to vary the distance between the seam and the cutting edge. Furthermore, the blades can be varied in distance from the needle, so that an overall acceleration of the sewing and cutting process can be achieved.

Advantageous and partly inventive features are evident from the dependent claims.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS Two embodiments of the invention are described in detail below with reference to the drawings.

The sewing apparatus according to the first embodiment shown in FIGS. 1 to 8 has a stand 1 on which a sewing machine 2 can move in a horizontal xy plane on a cross carriage 3 in x and y directions. It is possible. For this purpose, an x carriage 4 is arranged so as to be displaceable in the x direction on a guide 5 fixedly arranged on the stand 1. The carriage is a stand 1
It is driven by an x prime mover 6, which is likewise fixedly mounted on the stand 1 by means of a toothed belt transmission 8 which is moved by means of a deflecting roller 7 which is fixed in position and rotatably supported.

[0010] On the x carriage 4, y related to the guide 10
The carriage 9 is supported so as to be displaceable in the y direction. The guide 10 is fixedly attached to the x carriage 4. Furthermore, a y prime mover 11 is mounted on the x carriage 4 and drives the y carriage 9 in the y direction via a toothed belt transmission 12. Toothed belt transmission 1
2 is likewise moved by a deflecting roller 13 rotatably mounted on the x carriage 4. A sewing machine 2 is mounted on a y-carriage 9; the sewing machine is essentially moved by a drive of both carriages 4, 9 at each point on a horizontal xy plane in a given working range.

The sewing machine 2 is configured as usual.
That is, it has an upper arm 14 extending horizontally, a vertical standard (stand) 15, and a case-like lower floor plate (base plate) 16, which has a substantially C shape. A needle bar 17 movable vertically and reciprocally in the z direction projects downward from the free end of the arm 14 and carries a needle 18. The needle 18 penetrates the floor plate 16 through a piercing hole 19 in the floor plate 16 where it cooperates with the looper 20.
Needle bar 17 and needle 18 are driven by a drive motor,
1 drives the arm 14 via an arm shaft 22 supported by the arm 14, and the arm shaft also drives the looper 20.

A fixed sewing material holder 24 is arranged on an upper base 23 of the stand 1 which is arranged substantially on the same plane as the upper side of the floor plate 16. The sewing material holder 24
A sewing material portion 27 to be sewn is sandwiched between a lower portion 25 supported by the base 23 and an upper portion 26 capable of high rotation. The sewing machines described thus far are known in principle and, in particular, for example (US Pat.
DE 35 46 238 A1 (corresponding to 696,242).

A cutting device 28 is mounted on the sewing machine 2 and on the arm 14 thereof. This cutting device 28
It has a blade 29 together with a counter blade 30. They move together in the x'y 'plane and are rotatable about an axis extending in the z' direction. Further, the blade 29 can be driven by reciprocating in the z ′ direction.

Below the arm 14, a fixed arm 32 extending in the y 'direction is attached. On the lower side, the y 'carriage 33 is guided by a guide 34 so as to be displaceable in the y' direction, and is held in the z 'direction. A y 'prime mover 35 is used for driving the y' carriage 33, and the y 'carriage is driven by a toothed belt transmission 37 guided via a deflecting roller 36.

An x 'carriage 38 is further displaceably guided by a guide 39 below the y' carriage 33 and held in the z 'direction. Drive in the x 'direction is provided by an x' prime mover 40 mounted on a y 'carriage 33 and the x' of the x 'carriage 38 is driven by a toothed belt drive 42 guided through deflecting rollers 41.
Movement in the direction occurs. The x 'carriage 38 further includes x
It supports a carrier 43 which extends parallel to the y-plane and is displaceable by the described possibility of movement in the x'y'-plane arranged above it.

The carrier 43 has at its ends, in particular a cutting unit 44 projecting downwards, having in particular a blade 29 and an opposing blade 30.
I support. The cutting unit 44 also has a rotary head 45 rotatably supported by a shaft 46 on the carrier 43 and rotatably about an axis 47 extending in the z ′ direction.
Having. The rotary head 45 can be rotationally driven by a tangent guide motor or a prime mover 48, and the rotational movement is transmitted to the rotary head 45 by a toothed belt transmission 49. A slide sleeve 50 is attached to the shaft 46 so as not to be twisted but displaceable in the z ′ direction, and a slide stone 53 fits between the flanges 51 and 52. The sliding stone 53 is z ′ through an eccentric transmission 54.
Blade drive motor or prime mover 5 acting as prime mover
5 and is mounted between the tangent guide motor 48 and the cutting unit 44 below the carrier 43. The drive shaft 56 of the motor 55 that connects the blade drive motor 55 with the eccentric transmission 54 is supported by a bearing 57 that is also fixed below the carrier 43.

The blade 29 is mounted on a slide sleeve 50 which can move in a reciprocating motion by an eccentric transmission 54, while the opposing blade 30 which does not move in the z 'direction is mounted on a shaft 46.

As is apparent from FIG. 8, the x prime mover 6, y
Prime mover 11, z prime mover 21, x 'prime mover 40, y' prime mover 35, tangent guide motor 48, blade drive motor 5
For the control of No. 5, a common control device 58 is provided. Programs for the sewing machine 2 and the cutting device 28 are provided to the control device 58 via, for example, the cassette 59. All prime movers and motors are controllable motors or prime movers.

FIG. 9 shows a modified embodiment of the sewing equipment. In this embodiment, the sewing machine 2 is fixedly arranged on the stand 1, and the sewing material holder 24 'is arranged on the cross carriage 3' so as to be displaceable in the xy plane. In this case, the y 'carriage 9' is fixed to a stand 1 carrying an x carriage 4 'for fixing the sewing material holder 24', so that the relative movement between the sewing material holder 24 'and the sewing machine 2 in the xy plane. It is possible. Such a form of sewing equipment (without cutting device 28) is likewise basically known, for example (US Pat. No. 4,809,627).
No. DE 37 24 002 A1 (corresponding to U.S. Pat. No. 5,697,311)
1 is known. Also in this embodiment, the cutting device 28
Is attached to the arm 14 of the sewing machine 2.

As is clear from FIGS. 3 and 9, a seam 27 is formed in the sewing material portion 27 which is a collar in this case. This occurs in the embodiment according to FIGS. 1 to 8 by a relative displacement of the sewing machine 2 with respect to the sewing material holders 24 to 24 ', as in the embodiment according to FIG. Cutting device 28
The sewing material portion 27 is cut by the cutting edge 6.
2 along its inner border 61.
The completely independent movement of the cutting unit 44 independent of the movement of the needle 18 with respect to the sewing material portion 27 can result in a cutting edge 62 whose pattern or extension is forced (as in the prior art) to the seam 60 etc. It extends independently of the seam, not the spacing. For example, in the case of the present example, the cutting edge 62 is cut by the seam tip 63 corresponding to the collar tip in order to cut off excess cloth that hinders the folding of the collar in this range. (mit reduz
Pass by iertem Abstand an der Naht-Spitze). In addition, the cutting unit 44 is able to follow the needle 18 particularly in the region of a significant change in direction, such as at the seam tip 63, and then back again in a straight seam section. When the direction of the seam 60 changes, the z 'axis 47
The rotational nature of the cutting unit 40 around ensures that the cut is always tangential.

[Brief description of the drawings]

FIG. 1 is a partial front view of a sewing facility.

FIG. 2 is a partial side view of the sewing equipment corresponding to the visible arrow II in FIG.

FIG. 3 is a partial plan view of the sewing equipment corresponding to a visual arrow III in FIG. 1;

FIG. 4 is a partial front view of the sewing equipment on an enlarged scale corresponding to the visual arrow IV in FIG. 3;

FIG. 5 is a partial side view of the sewing equipment corresponding to the visual arrow V in FIG.

FIG. 6 is a plan view of a cutting device of the sewing facility.

FIG. 7 is a side view of the cutting device corresponding to the visible arrow VII in FIG.

FIG. 8 is a schematic diagram of a control device of the sewing facility.

FIG. 9 is a partial plan view of a sewing machine according to a second embodiment.

[Explanation of symbols]

 Reference Signs List 1 stand 2 sewing machine 3 cross carriage 6 x prime mover 11 y prime mover 18 needle 21 z prime mover 24 sewing material holder 27 sewing material part 58 controller

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Joachim Brockmann, Germany Day 32130 Enger Grunstrasse 76 (72) Inventor Michael Husemann, Germany Day 32289 Ledinghausen am Alten Sportplatz 23 (72) Inventor Heike Beckhaus Germany 33336 Biele Felt Gratbecker Strasse 18 F term (reference) 3B150 AA15 BA09 CC01 CE01 CE24 CE27 EB03 EB13 EE01 EE08 EE15 EH01 JA02 JA03 JA33 LA73 LB02 MA02 NA28 NA59 NB09 NC02 NC03

Claims (7)

[Claims] 1. A stand (1); said stand (1)
A sewing material holder (24, for holding a sewing material portion (27) during the sewing process);
24 ′); x motor (6) and y motor (11) for mutual displacement of the sewing machine (2) and the sewing material holder (24, 24 ′) in an xy plane perpendicular to the z direction.
A cross carriage (3, 3 ′) having a cutting device;
8) and a sewing device comprising a control device (58), wherein the sewing machine (2) has a needle (18) that can be driven to reciprocate in the z direction by a z prime mover (21); The cutting device (28) is connected to the cutting unit (44) and x '.
Second cross carriage (31) movable in y 'plane
The cutting unit (44) has a blade (29) that can be driven to reciprocate, and the second cross carriage (31)
Carries a x 'prime mover (40), a y' prime mover (35), the cutting unit (44), and a blade drive motor (55) for driving the blade (29). The control device (58) x prime mover (6), y prime mover (1
1) A sewing device as provided for the control of the z prime mover (21), the x 'prime mover (40), the y' prime mover (35) and the blade drive motor (55). 2. Sewing equipment according to claim 1, characterized in that the cutting unit (44) is rotatable about the z 'axis. 3. Sewing equipment according to claim 1, wherein a second cross carriage (31) of the cutting device (28) is mounted on the sewing machine (2). 4. An opposing blade (3) wherein said cutting unit (44) does not move in the z 'direction and cooperates with the blade (29).
The sewing equipment according to any one of claims 1 to 3, wherein the sewing equipment has (0). 5. The device according to claim 2, wherein the blade (29) and the counter blade (30) are commonly rotatable about the z ′ axis (47). Sewing equipment. 6. The sewing machine according to claim 1, wherein the sewing machine is arranged on a cruciform carriage and the sewing material holder is fixedly arranged on a stand. The sewing facility according to any one of claims 5 to 10. 7. The sewing machine according to claim 1, wherein the sewing machine is fixed in position and the sewing material holder is arranged on a stand and the sewing material holder is arranged on a cross carriage. The sewing facility according to any one of claims 1 to 5.