DE1924938B2 - Template control for the relative movement between workpiece and tool on sewing systems - Google Patents

Description

3 4

is fixable and the release of the lock is arranged by the Ab- an inside corner 33. It has a toothed feeler The lock can be made from a collar part 34 that counteracts the tension of a spring bolts exist, the collar of which can be displaced between two stop edges 37 by means of a spring 36, is moved behind the tooth segment. A parallel 38 (FIG. 4) is mounted in a guide part 35 to the toothing of the tooth segment, the 5 the toothing by means of screws 39 on the template 7 the fixed guide part 35 opposite the tooth segment is also used for receiving Guide for the scanning means is after the movement of an unlockable lock 40, which consists of a counter of the scanning means can be moved into the Sctehlonenecke. the tension of a spring 41 in the guide part 35 The guide consists of a two-armed lever, movable and with a plate-shaped head which a spring holds against a stop io 42 formed bolt 43 consists

The invention is shown in the drawings by way of example shown. It shows th auxiliary templates 8 (Fig. 1 to 3, 8 and 9), their

F i g. 1 a template-controlled automatic sewing end faces 9 and inside corners 44 from the top to the top

system for sewing collar blanks or magnetic roller 12 counter-rotating lower

similar small parts are bypassed continuously in the front 15 magnetic roller 14, an under-

deransicht and partially in section half of the template 8 arranged idle movements

F i g. 2 shows a section, corresponding to the line H-H transmission connection 32 ', the toothed part 34 and

the F i g. 1 on an enlarged scale, unlockable lock 40 with the lower pinion

3 shows a perspective view of the shell 15 interacting.

blonen, approximately in the direction of arrow III of FIG. 2 on the ver ao On the auxiliary template 8 there is a rear

Larger scale, running blockage (guide for the scanning means) 45, which with

F i g. 4 is a partial plan view of a template and the upper magnetic roller 12 and the upper tooth

the idle movement connection, pinion 13 cooperates

F i g. 5 shows a section along the line V-V of the set screw 46 rotatably mounted double-armed

F i g. 4, a ₅ lever 47, one arm 48 of which is under the clamping

F i g. 6 a roughly of the F i g. 4, a corresponding division of a spring 49 rests against a stop 50

top view, with the moving parts in one and its free, two-part arm 51, 51 'on the

other working position, K: uite 9 of the template 8 protrudes and an end face 52

F i g. 7 shows a section along the line VII-VII in FIG

Fig. 6, 30 of the auxiliary template 8 runs parallel plane, so

F i g. 8 is a partial plan view of a Hwis template that the magnetic roller 11 without substantial lateral

with the idle motion connection and the return game in the inside corner 44 are added

running blockage and can and the upper magnetic roller 12 on the end face

F i g. 9 shows a section along the line IX-IX of the 52 of the arm lever 51 'comes to rest. On this one

F i g. 8. 35 is also a joint with the upper pinion 13-

On a turntable 1 (Fig. 1), which is arranged by a quantity acting roller 53, which is around a

Motor 2 is driven, interchangeable work set screw 54 is rotatably mounted.

clamped piece holder 3, in which the workpieces 4 In the F i g. 4, 6 and 7 is a simplified one, with

be held by means of clamps 5 and on whose one lock 40 formed idling movement control

Underside the templates 6 are attached. This binding 32 is shown for such sewing systems

stand from main templates 7 and below which can be used in which a changeover

Auxiliary stencils located on the plane 8. the magnetrons from a main stencil to a

At the end faces 9, 10 of the templates 7, 8 auxiliary template is not required. In this case

if there are magnetic rollers 11, in the one shown in FIGS. 1 to 3, only the magnetic roller 12 and the one connected to it are

8 and 9 illustrated embodiment of a 45 bound pinion 13 required, which on the

upper magnetic roller 12 and a shaft 16 connected to this are attached.

those above.; Ren pinion 13 and a lower Ma- The operation of the devices can as

gnetrolle 14 and one associated with this are described below:

Ren pinion 15 exist. The upper pair of wheels 13, after the workpieces 4 have been placed in the work-

12 is attached to a shaft 16, which is rotatable in a 50 piece holder 3 and switching on the motor 2 w ^ rd

the pair of wheels 14, 15 receiving the hollow shaft 17, the turntable 1 rotated in the direction of the arrow (FIG. 1)

is stored (Fig. 1, 5 and 9). The hollow shaft 17 is by switching on the solenoid 18 and the

a magnet coil 18, which is in a motors 24 and 31, the magnet roller 11 to the

The swivel arm 20 carrying the sewing machine 19 is pressed onto the template 7 and rolls along it, with

is taken. The two shafts 16 and 17 are 55 simultaneously the needle 30 of the sewing machine 1

via bevel gears 21, 22, 23 in opposite directions from one and downward movements to form stitches.

Motor24 driven (Fig. 1). Now runs, as shown in Fig. 4 and 7, the

The turntable 1 is carried by a shaft 25, upper magnetic roller 12 in the in-

which is rotatably mounted in a frame 26. The upper one engages on the corner of the main template

Sem a cantilever arm 27 is attached to which a 60 tooth pinion 13 in the teeth of the toothed part 34

Articulated arm 28 is pivoted horizontally, a. Here, the two rollers 12, 13 remain for

whose free arm articulated with the pivot arm 20 for a short period of time in the inner corner 33, so that

connected is. during this time the needle 30 will certainly one

The axis is comparable with the Magnetrollenil pierce through the workpiece in the current vertex and a needle 30 carrying the needle bar 65 of the 29 dot-dash lines angle of the seam can perform receive their motion from a motor 31, line N. The rotation of the top

On the main template 7 (Figs. 2 to 5 and 7) the pinion 13 in the corner 33 causes the correct one Idle movement connection 32 in the area of the toothed part 34 of the pinion 13 against the

Tension of the spring 36 on the stop edge 37 comes to rest, after which the pinion 13 on the toothed part 34 unrolls.

After the toothed part 34 rests on the stop edge 37, the spring 41 causes the unlockable Lock 34 from engaging the plate-shaped head 42 behind the edge of the toothed part 35 (F i g. 6), so that during the rolling of the pinion 13, the tensioned spring 36 no additional Can exert thrust on the pinion 13. This will prevent the magnetic roller from running out Irregular stitch lengths entering from the corner are avoided.

After the pinion 13 has come out of engagement with the toothed part, it is in the movement path lying bolt 43 pressed by the pinion 13, between the head 42 and the Guide part 35 a free space is formed so that the toothed part 34 under the action of the spring 36 return to its starting position (Fig. 4) ao kanu.

In the sewing system shown in FIGS. 1, 2, 3, 8 and 9, after leaving the main template 7 the lower pair of rollers 14, 15 driven in opposite directions to the pair of rollers 12, 13 for contact on the auxiliary template 8. Here, the lower magnetic roller 15 lies on the end face 9 of the auxiliary template 8 at. Before entering the inner corner 44, the movement path of the magnetic roller 11 (Fig. 3) projecting two-part arm 51, 51 'of the backstop 45 through the upper pinion 13 and pressed to the side against the tension of the spring 49 (FIG. 2), so that the magnetic roller 11 in the inside corner 44 can come in '. During this process, the backstop 45 returns to its starting position, as in Fig. 8 and 9 shown. Here, the lower magnetic roller 14 is located on the end face 9 of the Auxiliary template 8, while the lower pinion 15. As already described above, with the idle movement connection 32 'comes into operative connection. At the same time, however, there is also the one driven in opposite directions upper magnetic roller 12 on the end face 52 of the arm 51, 51 'of the backstop 45. These prevents a return movement of the magnet roller 11 from the inside corner 44 of the auxiliary template 8, which then can occur when the magnet roller 11 runs into the corner 44 at a relatively high speed.

1 sheet of drawings

Claims (4)

which causes the roller in the corner to be stopped for a short time before the toothed part, which is under the tension of a spring, takes effect 1. Template control for the relative movement, to act as an abutment against that between the workpiece and the tool at sewing, the pinion can work to pull the roller out of the corner systems, with driven ones, to push around the stencil. moving magnetic roller as a scanning means, which ensures a This arrangement ensures that a h? one coaxially arranged pinion, inner corner of the template inhibited magnetic roller with arranged at the inside corners of the template is forced out of the corner, post-tensioned Tooth segment that has a free io which it and thus also the needle of the sewing machine is stored and its movement has remained in the corner for a short time, so with Stops is limited, thereby marking a puncture at the apex of the seam, that a releasable lock (40) takes place in this way winkeis, but it does not prevent the is arranged that the toothed segment (34) after the first stitches after the change in direction Reaching its second end position can be fixed and experience shows that the role and the needle fail longer the release of the lock (40) by scanning than the subsequent ones. This effect is arguably medium (12 to 15) takes place. due to the fact that the magnetic roller, 2. Template control according to claim 1, in that it is located in an inner corner, on a characterized in that the lock (40) from part (up to about 170 °) of its circumference from the a collar bolt (42, 43) whose collar 20 template is included, the largest magnetic means a spring (41) behind the toothed segment is exposed to field action and that when you leave (34) when the corner is movable, a sudden drop in the magnetic field 3. Template control after one of the effects occurs, which is supported by the sayings here 1 or 2, characterized in that when the spring of the toothed part is relaxing, zueine parallel to the toothing of the tooth segment 35 next to one lying above the normal dimension (34) running, the toothing of the tooth saw feed speed is suddenly accelerated, ment's opposite guide (45) for which is from the German utility model 1 986 889 Scanning means (12 to 15) after the movement of the further a device for automatic processing Scanning means (12 to 15) in the template corner of received in clamping or holding frames 30 workpieces can be indented according to the outline of the workpiece 4. template control according to claim 3, accordingly designed templates which by means of characterized in that the guide (45) are bypassed by driven magnetic rollers, one two-armed lever (47), which one knows. This known device has a coaxial spring (49) holds against a stop (50). Orderly, counter-rotating magnetic rollers 35 and with these mutually cooperating, an inner curve containing portion having _____ the main template and the auxiliary stencils that also have an inner curve on which the lower counter-rotating magnetic roller 40 after the ineffectiveness of the upper roller for the purpose of The invention relates to a template generation of a small radius of curvature or control for the relative movement between the work and an angled seam comes to bear, piece and tool on sewing systems with driven- With this device it is probably possible, the ner, the template bypassing magnetic roller as seams to be produced, for example on a Hem-scanning device, the one coaxially arranged 45 denkragen angularly without forming a radius Pinion has to deflect with inside and outside corners of the shell, what with the Verwenblone arranged pretensioned tooth segment, manure of only one bypassed by a roller which is mounted with one degree of freedom and whose template is not possible, but is not a Vorrich movement is limited by stops. tung reveals that the The purpose of the invention is to produce a roll of the corner of a template and the formation that the coaxial with the needle allows sewing a stitch at the apex of the magnetic roll arranged by the sewing machine according to its angle,
run into a corner of the stencil for a short time. The technical task of the invention remains so that the needle can be sure of the reasons for an improved stencil control to puncture the vertex of the suture angle and to create the type mentioned at the beginning, which, in addition to the closing, is secure runs out of the corner, so that safe removal of the magnetic rollers from the a perfect Stichbüdung with stitches always from the inside corner of the stencil after their short-term equal length during the unrolling of the magnet remains in this for the purpose of forming a roll in the corner of the stencil. Stitch at the apex of the through the course of the seam From British patent specification 1,089,759, the angle formed is also the angle formed during rapid approach Already a guide and inner corner suitable for automatic sewing systems as a result of the impact in this template device known to prevent a motor-driven return movement of the roller, so level, printed on the stencil roll with a so that it moves at a constant speed with this running coaxially and with which it is moved out of the corner. Roller connected pinion and a toothed part 55 According to the invention, this object is through a having released near an inner corner of the stencil releasable lock which is arranged such that is arranged, cooperates with the pinion and limited in its movement by stops with this forms an idle movement connection, toothed segment after reaching its second end position