TWM544524U - Sewing equipment - Google Patents

Description

Sewing equipment

This new type relates to sewing equipment. The present invention relates to a sewing apparatus having a sewing machine for sewing an additional seam portion and a base seam portion in a sewing direction.

Such sewing machines are known by the prior use of the disclosure.

The present invention proposes a sewing device. According to an embodiment of the invention, it is an object of the invention to improve a sewing device of the type mentioned at the outset such that the basic structure of the sewing device is simplified.

This object is achieved according to a first aspect of the invention by a sewing device having the specified features.

The position-reproducing device according to the present invention makes it possible that all of the components of the sewing device that must be precisely oriented relative to the slide are pre-arranged with a precisely predetermined relative positioning relative to the base frame. The precise positioning of these components for the skateboard is automatically given. These components which are to be precisely oriented with respect to the slide can be referred to as the sewing machine itself, a feed feed transmission component of the type according to the feed device, for example a piping/flange feed device, and for example a sewing material according to the sewing material. Types of sewing material are sent out of the transport unit.

According to another aspect of the present invention, the position presetting device is simple in construction and Kinematics is not overdetermined. At the same time, an accurate position reservation is ensured thereby.

According to another aspect of the invention, the configuration of the position fixing unit is cost-effectively achievable. The positioning pin of the position fixing unit can be fixed to the support plate or therein and can be screwed therein, for example. The positioning pin receiving portion of the first position fixing unit may be designed as a recess complementary to the positioning pin or a through hole in the slider. The positioning elongated hole of the second position fixing unit may be formed in the slider.

According to another aspect of the present invention, the distance between the two position fixing units ensures a highly accurate position reservation. The distance between the two position fixing units relative to each other may be greater than 60% of the maximum extension dimension of the slide plate in the support plane, may be greater than 70% of the maximum extension dimension, may be greater than 80% of the maximum extension dimension, or may be greater than This maximum extension size is 90%.

Another object of the present invention is to improve the sewing apparatus of the type mentioned at the beginning, so that the sewing treatment can be improved.

This object is achieved according to a second aspect of the invention by a sewing device having the specified features. According to the novel, it is known that the orientation of the presser foot is as follows: that is, the orientation is in or parallel to the plane of the vertical presser foot extending parallel to the sewing direction, avoiding the presser foot against other components, in particular the material conveying device Obstruction. The size of the structure of the presser foot that may interfere with it can be limited to its diameter as viewed in the sewing direction. This contributes to the configuration of the sewing feed member or the sewing material transfer member.

According to a further development of the novel, an advantageous symmetrical arrangement of the presser foot with respect to the stitch forming region of the double needle sewing machine is obtained.

According to another aspect of the present invention, the oblique extension of the presser foot provides the freedom that it can be advantageously utilized to meet the structural space requirements when integrating the presser foot.

According to another aspect of the present invention, in the sewing apparatus having the sewing material gripper, the advantages of the presser foot according to the present invention are particularly well exerted. This is especially true for clamping sections that are narrowly spaced from each other transversely to the sewing direction. The spacing space between the clamping sections can still be so long that the clamping section can be guided past the presser foot without being obstructed by the presser foot.

The features of the sewing apparatus according to the above two aspects can also be combined with each other.

1‧‧‧Sewing equipment

2‧‧‧Sewing direction

3, 4‧‧‧ sewing needle

5‧‧‧Sewing machine

6‧‧‧Transporting components; Feeding device

7‧‧‧Support plate

8‧‧‧Transporting parts; sewing material clamp

9‧‧‧Clamping section

9a, 9b‧‧‧ clamping section

10a, 10b‧‧‧Clamp holder

11, 11a, 11b‧‧‧ clamp swing drive

12‧‧‧Opertable display

13‧‧‧Foot presser

14‧‧‧Frame

15‧‧‧Travel cylinder

16‧‧‧Foot foot plane

17‧‧‧Foot press head

17a‧‧‧ pinch point

18‧‧‧needle transmission device

19‧‧‧Bear axis

20‧‧‧arm

21‧‧‧Handwheel

22‧‧‧ cam

23‧‧‧Adjustment actuator

24‧‧‧ bracket

25‧‧‧Intermediate axis

26‧‧‧ drive shaft

26a‧‧‧steering rod

27‧‧‧Switching device

28‧‧‧ stroke cylinder

29‧‧‧Frame rod

30‧‧‧Travel piston

30a‧‧‧stop body

30b‧‧‧ screw

31‧‧‧Reverse stop

32‧‧‧Adjustment agency

33‧‧‧Adjustment wheel

34‧‧‧Leather spring

35‧‧‧Transfer hinge

36‧‧‧Needle Rod Coupler Shaft

37‧‧‧Needle bar coupler

38‧‧‧ Needle bar

39‧‧‧needle clip

40‧‧‧ Needle transmission oscillation axis

41‧‧‧Central control unit; controller; control unit

42‧‧‧Bist shaft crank

43‧‧‧ pole

56‧‧‧support plane

86‧‧‧Swing axis

87a, 87b‧‧‧ support

88a, 88b, 97a, 97b‧‧‧ distance adjustment device

89a, 89b‧‧‧ adjustment wheel

90a‧‧‧Adjusting threaded shaft

91a‧‧‧ both sides bearing

92a‧‧‧ shaft nut

93a‧‧‧Hinging mechanism

94a‧‧‧Connecting eyelet

95a‧‧‧ Connecting rod

96a‧‧‧Travel Drive Department

98a, 98b‧‧‧ adjustment wheel

99a‧‧‧ tooth belt

100a‧‧‧ drive gear

101a‧‧‧Drive shaft

102a, 102b‧‧‧ distance adjustment motor; stepper motor

103‧‧‧ seam; double seam

104, 105‧‧‧ single seam

106‧‧‧ incision

107, 108‧‧‧ corner

110‧‧‧ mask

111‧‧‧Base frame

112‧‧‧ Skateboarding

113‧‧‧Location reservation device

113a‧‧‧First position fixing unit

113b‧‧‧Second position fixing unit

114, 122‧‧‧ Positioning line

115‧‧‧Locating pin

116‧‧‧Position pin receiving department

117‧‧‧Installation and reception

118‧‧‧ Relative orientation

119‧‧‧Locating pin

120‧‧‧Locating long holes

121‧‧‧Installation recess

122‧‧‧ Positioning line

A, B‧‧‧ distance

B1, B2‧‧‧ distance value

KA‧‧‧Clamp Driver

KR‧‧Clamp frame

M‧‧‧ plane

x, y, z‧‧‧ coordinates

‧‧‧‧ angle

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the drawings: FIG. 1 shows a side view of a sewing apparatus according to the present invention; FIG. 2 shows an end view from a viewing direction II in FIG. 1; FIGS. 3 and 4 show a structural group of a sewing machine side of a sewing apparatus. Figure 5 and Figure 6 show perspective views of the needle transport structure of the sewing machine of the sewing apparatus, including the needle transfer-drive-adjustment component derived from the arm shaft; Figure 7 shows the implementation of the "handwheel-type adjustment" A side view of a structural group of driving and holding members of the sewing material of the sewing apparatus in a variant; FIG. 8 shows a view from the viewing direction VIII of the structural group in FIG. 7, wherein the viewing direction corresponds to the sewing direction Figure 9 shows detail IX in Figure 8; Figure 10 shows an illustration similar to Figure 7, wherein the clamp retains the part The U-shaped support seat in the front from the viewing direction of Fig. 7 is omitted; Figs. 11 and 12 show perspective views of the structural group according to Fig. 7; Figs. 13 to 17 show Fig. 7, Fig. 8 and Fig. 10 to Figure 12 is a view similar to the structural group of the holding and driving parts of the sewing material holder in the "motor-actuated type adjustment" embodiment; Figures 18 to 20 schematically show the steps that can be generated by means of the sewing device A variation of the sewing configuration and the opening of the bag; and Figure 21 shows a general perspective view of the main components of the sewing device.

Detailed description of the preferred embodiment

Figures 1 and 2 show a partially illustrated main part of a sewing apparatus 1, in particular for producing a piping pocket having a pocket opening. With the sewing apparatus 1, it is possible to suture an additional sewing material portion (for example, a piping strip) with a base sewing portion (for example, a pants portion or a jacket portion). Pocket covers or welt pockets (Patten- oder Leistentaschen) can also be sewn with this sewing device.

Along the sewing direction 2 (see, for example, the directional arrow in Fig. 2) of the sewing needles 3, 4 (see, for example, Figs. 5 and 6) of the sewing machine 5 of the sewing apparatus 1, a piping- or pocket cover-folding is arranged on the sewing setting surface. - Feed device 6. The basic function of the edge feed device 6 is known from the prior art. Reference is made to the prior publications DE 100 16 410 C1, DE 199 26 866 C1 and DE 198 45 624 C1 and the references given therein. The sewing machine 5 is a double needle sewing machine. Basically, such a double needle sewing machine has been found in EP 2 206 819 A1. The sewing direction 2 extends along the direction x in the Cartesian xyz coordinate system drawn in Figures 3 and 21 .

The sewing material is placed on the support plate 7 of the sewing apparatus 1. Support plate 7 defines a branch Bearing plane 56.

The sewing material gripper 8 is used to press the sewing material onto the support plate 7 on one side of the line to be formed and for the sewing material transfer in the sewing direction 2. The main part of the sewing material gripper 8, ie the clamping section 9a facing the viewer, together with the clamping holder 10a, which is assigned partially disconnected for this purpose, and the gripper drive KA for this are shown in Fig. 2 The part is shown schematically in part. The clamping section 9 of the sewing material holder 8 can be swung by the clamp oscillating drive 11, which will be explained in more detail. The operable display 12 of the sewing apparatus 1 is used to select a sewing program, an input for sewing materials, and a monitoring for a sewing process, which may mean a touch screen.

A part of the sewing device 1 is a presser foot 13 for pressing the base after the base sewing portion is placed on the support plate 7 and before being fed together with the additional sewing material portion Sewing part. After the base seam portion is secured to the support panel 7 by the presser foot 13, the base seam portion can be oriented and flattened by the operator.

The presser foot 13 is fixed to a frame 14 (see FIG. 4) of the sewing apparatus 1, which also carries the feeding device 6. By means of the stroke cylinder 15, the presser foot 13 can be controlled to be displaced between the extended pressing position shown in the drawing and the retracted neutral position.

The presser foot 13 runs along a vertical presser foot plane 16 (see Figure 1). The presser foot plane 16 extends parallel to the sewing direction 2 . The presser foot plane 16 coincides with the plane of symmetry between the two sewing needles 3, 4 of the sewing machine 5. In the presser foot plane 16, the presser foot 13 forms a finite angle α (see Fig. 2) with respect to the vertical direction, i.e., obliquely. This angle a is about 5 in the illustrated embodiment.

The pinch point 17a of the presser foot 13, i.e., in the case where no base seam portion is placed, the contact point of the presser foot head 17 on the free end of the presser foot 13 on the support plate 7 is located in the sewing direction 2 The sewing needles 3, 4 are upstream of the sewing position of the sewing material, that is, upstream of the stitch forming region of the sewing machine 5.

The sewing machine 5 is capable of selectively, for example, sewing the needles in a step-by-step manner.

Figures 5 and 6 show details of the needle transport device 18 for producing the needle transport, wherein the sewing needles 3, 4 pierced in the sewing material transport the sewing material in the sewing direction 2.

The needle transfer drive is led out by an arm shaft 19 which extends in the arm 20 of the sewing machine 5. The arm shaft 19 is connected at the free end to the manually operable hand wheel 21 in a rotationally fixed manner.

The arm shaft 19 is applied to the needle transmission adjustment actuator 23 via the cam 22. The actuating actuator 23 is designed as a splint-type actuator.

In the sewing operation, the arm shaft 19 is driven by a drive motor (not shown), which can be arranged, for example, in the holder 24 or in the substrate below the support plate 7 of the sewing machine 5.

The adjustment actuator 23 causes an oscillating drive of the intermediate shaft 25 of the needle transport device 18, which extends parallel to the arm shaft 19. The oscillation amplitude or oscillation angle of the intermediate shaft 25 is predetermined by the corresponding transmission adjustment of the adjustment actuator 23. This transmission adjustment is effected by the rotation of the drive shaft 26, which cooperates with the adjustment drive 23 and likewise extends parallel to the arm shaft 19. Depending on the angular position of the drive shaft 26, a different transmission stroke is obtained which is transmitted in the sewing direction by 2 needles.

The angular position of the drive shaft 26 can be cut by means of the needle transfer switching device 27. change. Through the needle transfer switching device, the needle transfer device 18 can be switched between a first transfer bit and a second transfer bit, the first transfer bit being shown in Figures 5 and 6 and meaning a neutral position, The sewing needles 3, 4 in the first transfer position do not apply a transport stroke to the sewing material, in which the sewing needles 3, 4 apply a needle transport stroke to the sewing material, which is different from the transport stroke of the first transport position .

The stroke cylinder 28 is subordinate to the needle transfer-switching device 27, the bottom side of which is fixed to the frame rod 29 of the sewing machine 5, and the stroke piston 30 of the stroke cylinder acts on the transmission shaft 26 via the steering rod 26a for swinging.

The maximum stroke of the stroke piston 30 is defined by a spherical stop body 30a that is coupled to the drive shaft 26 in a rotationally fixed manner. The stop body 30a is used to predetermine the second transmission position and to predetermined the swing position of the drive shaft 26 and thereby the maximum transmission travel of the predetermined needle transmission. The stop position of the stop body 30a can be adjusted by the adjustment mechanism 32. A manually operated adjustment wheel 33 is used for this, with which the maximum transmission stroke, and thus the stitch length, can be adjusted, which is predetermined by the needle transmission at the second transmission position. The stopper body 30a abuts against the screw 30b of the adjustment wheel 33.

The minimum travel, that is to say the minimum transport stroke of the needle transport, is predetermined in the case of a retracted stroke piston 30 by a counter stop 31 for the stop body 30a which is mounted in the housing in a non-illustrated manner. This minimum stroke is 0 mm. In the minimum stroke position, if the stopper body 30a abuts against the reverse stopper body 31, needle-free transmission occurs.

The stroke cylinder 28 is pivotally actuated via a steering rod 26a to a drive shaft 26 which is embodied as an adjustment shaft. The pivot angle of the drive shaft 26 is a measure of the needle transmission stroke in the sewing direction 2.

The tension spring 34 is used to apply the preload to the drive shaft 26 in the "no transmission stroke" neutral position shown in Figures 5 and 6.

The amplitude of the oscillation of the intermediate shaft 25 predetermined by the adjustment actuator 23 is transmitted to the needle bar coupling shaft 36 through the transmission hinge 35. The amplitude of the oscillation of the needle bar coupler shaft 36 is also predetermined by the amplitude of the oscillation of the intermediate shaft 25. The needle bar coupler shaft 36 extends parallel to the arm shaft 19.

The needle bar coupler shaft 36 is coupled to the needle bar coupler 37 for the needle bar 38 in a rotationally fixed manner, and the two needles 3 and 4 are fixed to the needle bar 38 via a needle clamp 39.

Depending on the amplitude of the oscillation of the needle bar coupler shaft 36, the sewing needles 3, 4 oscillate around the needle transmission oscillation axis 40. The angle of the needle oscillation in the second transmission position, that is to say the stroke piston 30 which is extended until the stop body 30a stops on the screw 30b, and thus the maximum needle transmission stroke, is predetermined by the adjustment wheel 33.

The stroke cylinder 28 is signally connected to the central control unit 41 of the sewing apparatus 1. Thereby, the control device 41 controls the drive motors such as the stroke cylinder 15 and the stroke cylinder 28 and the arm shaft 19.

Also shown in Figures 5 and 6 is an arm shaft crank 42 and a wire rod 43 for actuating the needle bar 38 up and down.

During the operation of the sewing machine 5, the needle transmission can be selectively switched on. For this purpose, the sewing process starts with a first predetermined needle transfer stroke. During the sewing process, the needle transfer stroke can then be switched to a second predetermined needle transfer stroke that is different from the first needle transfer stroke. This second needle transfer stroke is preliminarily predetermined by the adjustment wheel 33. Alternatively, the second needle transfer stroke is predetermined at the central control unit 41 of the embodiment not shown. This can for example root Depending on the type of adjustment wheel 33, the adjustment wheel is driven via a motor.

Needle transfer that is selectively turned on during the sewing process can be used to support additional methods of sewing material transfer. The specific conditions that occur during sewing, such as thicker layers of sutures or overcoming transmission barriers, can therefore be taken into account. The switching of the needle transport stroke can be carried out in a controlled manner, for example, depending on the detection of the thickness of the sewing material. To this end, the controller 41 can communicate with a seam thickness sensor, not shown, and operate the stroke cylinder 28 to achieve needle transmission when a predetermined thickness of the seam is reached. The switching of the needle transfer can also be made in accordance with the measured sewing material transfer rate. For this purpose, for example, by means of a light sensor, the conveying rate of the sewing material is monitored during the sewing process. If the sewing material transfer rate is lower than the allowable value, the control device 41 can be turned on in turn to enable the needle transfer by the operation of the stroke cylinder 28.

Next, the adjustable sewing material gripper 8 will be described in detail in two implementation variants with reference to Figure 7 and the immediately following figures. Some components of the sewing material gripper 8, including the clamping section 9 and the viewer, for example in FIGS. 2, 7 and 13 for these components, are hereinafter referred to by the letter "a"; and the sewing material gripper 8 The components of the clamping section 9 facing this are referred to by the letter "b".

The two clamping sections 9a, 9b are formed substantially mirror-symmetrically with respect to the intermediate plane of symmetry M, for which reason it is sufficient to describe one of the two clamping sections 9a in detail below.

Each of the clamping sections 9a, 9b of the sewing material gripper 8 has a clamping holder 10a, 10b which is movable around a horizontal pivot axis 86 extending transversely to the sewing direction 2 in the liter shown in FIG. The high release position and the clamping position swing. For this purpose, the clamping holders 10a, 10b are pivotably supported respectively on the U In the shape of the support seats 87a, 87b. The support seats 87a, 87b are part of the clamp frame KR, which in turn is connected to the frame of the sewing device 1. By the gripper drive KA (see Fig. 2), which is controlled by the control unit 41, the gripper frame KR and the clamping sections 9a, 9b therewith can be displaced in the sewing direction 2.

The distance adjusting means 88a, 88b are used to distance the predetermined clamping sections 9a, 9b transversely to the sewing direction 2. The distance A between the two clamping holders 10a, 10b drawn in Figure 8 is a measure of the distance between the clamping segments 9a, 9b transverse to the sewing direction 2. Each of the two clamping sections 9a, 9b has a respective distance adjustment device 88a, 88b.

The distance adjustment device 88a has an adjustment wheel 89a which is designed as a hand wheel in the embodiment according to FIGS. 9 to 12 . The adjustment wheel 89a is accessible from the outside for manual operation and is connected to the adjustment screw shaft 90a in a rotationally fixed manner. The adjustment screw shaft 90a is rotatably supported on the legs of the support base 87a in the axial direction and the radial direction via bearings 91a on both sides.

The clamp oscillating drives 11a, 11b are used to drive the clamping segments 9a, 9b to oscillate about the pivot axis 86, the clamp oscillating drives 11a, 11b being designed as pneumatic cylinders and fixed to the base of the respective bearing seats 87a, 87b on.

A shaft nut 92a complementary to the adjustment threaded shaft 90a is provided. The shaft nut 92a is simultaneously constructed as a holder for the respective clamping holder 10a, 10b.

The shaft nut 92a, in turn, causes the sewing material holder 9 to be operatively coupled to the clamp swing actuator 11a via the hinge mechanism 93a having the long hole connection hole 94a, and the coupling rod 95a is engaged in the long hole connection hole. The long hole connecting hole 94a is fixed to the clamp holder 10a. The coupling rod 95a is fixed to the stroke driving portion 96a of the clamp swing driver 11a. The stroke driving unit 96a is a trip Plug.

Instead of the drive cylinder, the clamp swing drive 11a can also be designed as a stepper motor.

The coupling rod 95 a extends horizontally and is thus parallel to the pivot axis 86 on the one hand and parallel to the distance A to be adjusted on the other hand.

The two distance adjustment devices 88a, 88b can operate independently of each other.

The sewing material is conveyed in the sewing direction 2 by means of the sewing material holder 8 under the drive of the clamp driver KA.

A simple adjustment of the distance A between the clamping sections 9a, 9b can be achieved by means of a seam gripper 8 with manually operable distance adjustment means 88a, 88b. This can be used, for example, to make pockets of different lengths or widths without significant adjustment costs, in which there are different distances between the individual seams of the double seam.

Referring to Figures 13 through 17, another alternative embodiment of a sewing material grip having a distance A adjustable by a motor will be described below. Corresponding to the above-mentioned related FIGS. 1 to 12, particularly those having the same reference numerals, which have been explained in connection with FIGS. 8 to 12, will not be separately discussed again.

Instead of the hand wheel, the distance adjusting device 97a according to the embodiment of Figs. 13 to 17 has a motor-driven adjusting wheel 98a. The latter is designed as a gear that meshes with the toothed belt 99a, which in turn is driven by the drive gear 100a. The drive gear 100a is driven by a drive shaft 101a of the distance adjustment motor 102a, which in turn is mounted on the base of the support base 87a next to the clamp swing drive 11a.

The drive shaft 101a is parallel to the adjustment screw shaft 90a.

With the sewing material holder 8, the sewing apparatus 1 for sewing the additional sewing material portion and the base sewing material portion can be implemented, for example, the following operation method: the sewing material is driven by the driving of the swinging drive 11a, 11b by the clamp After the clamping sections 9a, 9b of the clamp 8 are swung into the clamping position to fix the base seam portion and the additional seam portion is folded over the base seam portion, the beginning of the seam and possibly the pocket opening is initiated. Sewing process. During this sewing process, at least one of the distance adjusting devices 97a, 97b for changing the distance A between the clamping segments 9a, 9b transverse to the sewing direction 2 is now changed. In particular, the two distance adjustment devices 97a, 97b are operated during the sewing process. These operations can be performed in relation to each other, for example, by means of a forced control device not shown.

This operation of the distance adjusting devices 97a, 97b is performed by controlling the respective stepping motors 102a, 102b. This and the control of the clamp swing drivers 11a, 11b are performed via the control device 41.

When the distance adjusting device 88a is operated, the bearing seat connecting eyelet 94a slides along the coupling rod 95a, thereby realizing the degree of freedom in which the shaft nut 92a is displaced with respect to the clamp swinging driver 11a fixed to the frame.

The above method of using the distance adjusting means 88a, 88b or 97a, 97b can be used in the production of a double seam having two single seams spaced apart from each other transversely to the sewing direction.

This will be explained below with reference to the piping geometry shown in Figs. 18 to 20 . The double seam 103 to be produced has two single seams 104, 105 which are at a distance B from each other transverse to the sewing direction 2. Extending between the single seams 104, 105 produces a longitudinal direction by means of a knife structure group not shown The slit is in the form of a pocket opening-cut 106.

Viewed upstream and downstream of the bag opening-cut 106 in the sewing direction 2, the position of the corners 107, 108 is shown in Figure 18, which utilizes a corner knife set of the sewing device 1 not shown And produced. The knives of the knives and the knives for cutting the slats, which are used for the production of the slanting slats, can be found in DE 198 54 624 C1.

By means of manually operable distance adjustment devices 88a, 88b or motor-driven distance adjustment devices 97a, 97b, the clamping position of the clamping segments 9a, 9b can be adapted transversely to the sewing direction 2 between the single seams 104, 105. Expected distance B. Furthermore, the possible offset between the position of the corners 107, 108 and the pocket opening-cut 106 is likewise corrected transversely to the sewing direction 2 by means of the distance adjustment means 88a, 88b or 97a, 97b. To this end, the distance adjusting means 88a, 88b or 97a, 97b can be operated by the corresponding operation of the hand adjusting wheels 89a, 89b or by the motor operation of the adjusting wheels 98a, 98b for the two clamping sections 9a, 9b. A uniform lateral adjustment is made such that, while maintaining the distance A, the two clamping segments 9a, 9b are displaced transversely to the sewing direction 2 in the same direction to compensate for the offset.

Additional hemming geometry, which is achievable by means of distance adjustment means 97a, 97b, is illustrated by way of example in Figures 19 and 20.

In the piping geometry according to Fig. 19, the distance B between the single seams 104, 105 varies monotonically between the distance values B1 and B2. Here, the distance value B1 which is forward in the sewing direction 2 is larger than the distance value B2 which is backward in the sewing direction. The inverse relationship B1 < B2 is also possible. Furthermore, it is not mandatory that the change between the distance values B1 and B2 is actually monotonous. In principle, the distance value Almost any continuous distance change between B1 and B2 can be achieved. Accordingly, the single seams 104, 105 can have a straight course (as shown in Figure 19), or other continuous runs (e.g., curved, sinusoidal, or other orientations).

In principle, in general, it also applies to B1=B2, wherein between the beginning and the end of the single seams 104, 105, at least in the first seam region, a further distance B different from B1=B2 is predetermined.

The change in the distance B between the single seams 104, 105 is achieved by the jaws that can be predetermined by the distance adjusting devices 97a, 97b. If the distance A of the clamp is small in the clamping position of the sewing material clamp 8, ie there is more sewing material in the transverse direction to the sewing direction 2, this will result in a larger distance B between the single seams 104, 105. . In the case of the opening of the clamping sections 9a, 9b, i.e. when the distance A is increased, less sewing material is retained between the clamping sections 9a, 9b compared to the above, which effectively results in a single seam 104 , the decrease in distance B between 105. For the predetermined distance B between the single seams 104, 105, it is not necessary to change the distance between the sewing needles 3, 4 transverse to the sewing direction 2.

In such a seam generation process, the distance adjusting means 97a, 97b for changing the distance between the clamping sections 9a, 9b transverse to the sewing direction 2 are operated during the sewing process.

Figure 20 shows an example of a hemming geometry for a constant distance B between single seams 104, 105, although the distance adjustment devices 97a, 97b are operated. The two single seams 104, 105 extend in a curved manner parallel to each other. This bend exists between the single seams 104, 105 of the bag opening-cut 106. Such a piping geometry can be synchronized by the gripper drive KA to operate the distance adjustment device with the gripper feeder for sewing material transfer 97a, 97b are implemented.

Another mode of operation of the driven distance adjustment devices 97a, 97b simplifies the opening of the bag opening-cut 106. For this purpose, after the seam segments of the single seams 104, 105 are correspondingly produced, this causes an opening of the clamping segments 9a, 9b transverse to the sewing direction 2, ie an increase in the distance A, wherein after the opening The slit cutting for creating the bag opening-cut 106 is performed by means of a knife structure set.

Figure 21 shows a general perspective view of the main components of the sewing apparatus 1.

The sewing material gripper 8 including the clamp frame KR is covered by the shielding cover 110.

The sewing apparatus 1 has a base frame 111 that carries a sewing machine 5 and the above-described sewing material feed conveying member for feeding a sewing material to the stitch forming region, and the above-described sewing material conveying and conveying member for feeding the sewing material from the stitch forming region. . The base frame 111 includes a support plate 7. The support plate 7 is intended to have a support plane 56. The support coordinates x and y of the Cartesian coordinate system (see Fig. 3) are formed into the support plane 56.

The slide plate 112 of the sewing device 1 is mounted in the region of the support plate 7. The sewing material slides on the slider 112 during transport.

The position reservation device 113 of the sewing apparatus 1 precisely predetermines the relative position of the slider 112 in the support plane 56 along the two coordinates x, y with respect to the support plate 7. The position reservation device 113 has a first position fixing unit 113a. The first position fixing unit 113a precisely predetermines the relative positioning point of the slider 112 in the support plane 56 along the two coordinates x, y with respect to the support plate 7. The x, y coordinates of the relative positioning point are shown by the positioning line 114 in FIG. The first position fixing unit 113a is formed by a positioning pin 115 that cooperates with the positioning pin receiving portion 116 in the slider 112. The locating pin receiving portion 116 is formed by a through hole in the slider 112. The positioning pin 115 is inserted into the mounting receiving portion of the support plate 7 117.

The second position fixing unit 113b of the position reservation device 113 precisely predetermines the relative positioning of the slide plate 112 in the support plane 56 along at least one of the support coordinates x, y, that is, along the support coordinate x with respect to the support plate 7. Direction 118. The second position fixing unit 113b is formed by another positioning pin 119 that cooperates with the positioning slot 120 designed in the slider 112. The positioning slot 120 extends in the relative positioning direction 118 of the second position fixing unit 113b, that is, in the direction x. The positioning pin 119 of the second position fixing unit 113b is in turn fixed in the mounting recess 121 in the support plate 7. The coordinates x, y of the positioning pin 119 of the second position fixing unit 113b are shown by another positioning line 122 in FIG.

The two position fixing units 113a, 113b are at a distance from each other in the support plane 56 which is greater than 50% of the maximum extent of the slide 112 in the support plane 56, i.e. the distance is greater than the diagonal of the slide 112 in the support plane 56. Half the line size. In fact, the two position fixing units 113a, 113b are spaced apart from each other by more than 80% of the maximum diagonal size of the slider 112.

In the construction of the sewing apparatus 1, all of the components that must be accurately oriented relative to the sled 112 in the completed operational state of the sewing apparatus 1 can be pre-positioned relative to the coordinates x, y that are precisely predetermined relative to the pedestal 111. Since the relative positions of the coordinates x, y of the slider 112 in the support plane 56 are precisely defined by the position reservation device 113, the positioning of these components for the precise coordinates x, y of the slider 112 is automatically given. These components mean, for example, the sewing machine 5, the edge feeding device 6, and the sewing material gripper 8.

1‧‧‧Sewing equipment

2‧‧‧Sewing direction

5‧‧‧Sewing machine

7‧‧‧Support plate

41‧‧‧Central control unit; controller; control unit

56‧‧‧support plane

110‧‧‧ mask

111‧‧‧Base frame

112‧‧‧ Skateboarding

113‧‧‧Location reservation device

113a‧‧‧First position fixing unit

113b‧‧‧Second position fixing unit

114‧‧‧Location points

115‧‧‧Locating pin

116‧‧‧Position pin receiving department

117‧‧‧Installation and reception

118‧‧‧ Relative orientation

119‧‧‧Locating pin

120‧‧‧Locating long holes

121‧‧‧Installation recess

122‧‧‧ Positioning line

x, y, z‧‧‧ coordinates

Claims (9)

A sewing apparatus comprising: a sewing machine for stitching an additional sewing material portion and a base sewing material portion in a sewing direction in a stitch forming region, the base frame carrying the sewing machine for feeding a seam a sewing material feed conveying member that feeds the stitch forming region and a sewing material conveying member for feeding the sewing material from the stitch forming region, wherein the base frame has a support plate, and the support plate is set For the supporting plane of the sewing material, the supporting coordinate is formed into the supporting plane, the sliding plate is installed in the area of the supporting plate, and the sewing material slides on the sliding plate during the conveying, and the position is predetermined, and the position is predetermined The device precisely positions the relative position of the slide in the support plane along the two coordinates relative to the support plate. A sewing apparatus according to claim 1, wherein the position presetting means comprises: a first position fixing unit that precisely predetermines that the slide plate is opposite to each other along the two coordinates in the support plane a second position fixing unit spaced apart from the first position fixing unit at a relative positioning point of the support plate, the second position fixing unit accurately predetermining the sliding plate along the support coordinate in the support plane At least one of the relative positioning directions of the support plate. A sewing apparatus according to claim 2, characterized in that said first position The fixing unit includes at least one positioning pin that cooperates with the at least one positioning pin receiving portion. The sewing apparatus according to claim 2, wherein the second position fixing unit includes at least one positioning pin, and the at least one positioning pin cooperates with the at least one positioning elongated hole. The sewing apparatus of claim 2, wherein the two position fixing units are spaced apart from each other by a distance greater than 50% of a maximum extension dimension of the slide plate in the support plane. The sewing apparatus according to claim 1, further comprising: a presser foot for feeding after the base sewing portion is placed on the sewing material support plate and with the additional sewing material portion The base seam portion is previously compressed, wherein the presser foot extends in a plane of the vertical presser foot, the presser foot plane being in the presser foot plane parallel to the sewing direction or the sewing direction. A sewing apparatus according to claim 6, wherein the sewing machine is designed as a two-needle sewing machine, wherein the presser foot plane coincides with a plane of symmetry between the two needles of the double needle sewing machine. A sewing apparatus according to claim 6, wherein the presser foot is formed at a limited angle with respect to the vertical direction, that is, obliquely. A sewing apparatus according to claim 6, wherein the sewing apparatus comprises a sewing material holder having two clamping sections for use on one side of a seam to be formed Press the sewing material onto the sewing material support plate.