DE1660869A1 - Automatically working system for sewing work - Google Patents

Description

Herbert Jacobs, Hersehe1 Baron, both Philadelphia, State Pennsylvania (V, St. E.), And Eric # inston, Melrose Park, State of Pennsylvania (V.St, A.)

Automatically working system for carrying out sewing work

The invention relates to a; . fully automatic System or machine for carrying out sewing work, with a feed device, one complementary to the Sewing device working cutting device and with a stacking device and with compressed air cylinders that the circular movements required for the machine to work produce. In addition, there are 3 old and holding devices, we radiate through several adjustable directional air.

- The "system" consists essentially of an automatic system working Nlhmsscshin © with a gate push stat lon, a =, a Sn ^ hneiäatatlOn and a stacking station

In the embodiment described here, a continuous Binding is automatically attached to a cut piece of fabric * but the machine can also be used to carry out numerous other sewing work *

The feed stator has a platform for holding the stacked cut pieces of goods and contains a feed device with a feed foot, which the Pieces of goods one after the other on one to the sewing machine leading conveyor belt

The sewing machine is automatic by a photocell switched on ο The cutting device is also switched on by a photocell

A stacking station automatically stacks the product after finishing the sewing and cutting processes ₀

Automatically operating stopping devices are assigned to the feed platform and the stacking device for emergencies and work, for example, when the feed supply is exhausted or when the adhesive tape is completely wound onto the take-up roller; "Various other safety devices and warning devices Z ₀ B ₀ warning lamps and automatically operating shut-off devices come into action as soon as undesired conditions develop",

Other characteristics and their advantages result from

Description based on the drawings,

In the drawings is

Pig. 1 shows a plan view of the complete sewing system;

1A is an enlarged view taken along line 1A-1A of FIG Pig «1;

FIG. 1B is an enlarged detail view of one in FIG. 1A illustrated lever;

FIG. 2 is an enlarged view of the feed station and FIG the sewing station according to line 2-2 of FIGS. 1;

FIG. 3 is a plan view along line 3-3 of FIGS. 2;

3A is an enlarged view of a guide cam disk 210 and two positions of the co-operating roller 214;

4 shows a plan view of a workpiece blank and of the device connected to it;

Fig. 5 is a partially sectioned view taken along line 5-5 Figo 4;

6 shows an enlarged section along line 6-6 of FIG. 4;

Figure 6A is a perspective view of one of the blank holders device associated clamping finger;

7 shows an enlarged section along line 7-7 in FIGS. 3; Figure "8 is an enlarged sectional view along line 8-8 of Figure 3 _o; 9 is a section along line 9-9 of FIG. 8; 10 is a section along line 10-10 of FIG. 9;

10A is a schematic view showing the cycle of movement of the feed foot shows;

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■. "1660863

11 is an enlarged section along line 11-11 of FIG Fig. 3;

FIG. 12 is a view taken along line 12-12 of FIG. 3; FIG. 13 is a plan view taken along line 13-13 of FIG. 12; FIG. 14 is a section along line -14-14 of FIG. 3;

15 is an enlarged side view of a "on the sewing machine head existing hold-down device;

15A shows a section along line 15A-15A of FIGS. "FIG. 16 is a plan view taken along line 16-16 of FIG. 15; FIG.

Figure 17 _e is a section on line 17-17 of Figo 16;

Fig. 18 is a partially broken away view of the stacking device ;

18A is a bottom view taken along line 18A of FIG. 18; Figure 18B is a bottom plan view taken along line 18B-18B of Figure 19; 18C shows a modified structure of the sewing machine system; 19 is a perspective view of the drive gear

for the conveyor belts 408; Fig. 20 shows a section along line 20-20 of Fig. 18; Figure 21 is a view taken along line 21-21 of Figure 20; 22 is a view along the line. 22-22 of Fig. 20; 23 shows a plan view of a pusher along line 23-23

Fig. 21; ■

24 shows a section along line 24-24 of FIG. 21;

FIG. 25 is a section along line 25-25 of FIG the cutting device of the plant;

26 shows an enlarged section along the line. 26-26 the Fig. 25;

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FIG _o 27 is an enlarged sectional view along line 27-27 of Figure "25;

Fig. 28 is a plan view along line 28-28 of Fig. 25;

29 shows a diagrammatic partial view of a supporting frame ;

30 is an enlarged view of a scaffold holder; .

Fig. 31 a. Section along line 31-31 of FIGS. 30, and

32, 33 and 34 are schematic circuit diagrams, which show further details of the working method ο

The automatically operating sewing machine 10 shown in FIG. 1 consists of a feed station 12, a Uahstation 14 ^ a cutting station 16 and a stacking station 18 »-

The main parts of Vörachubstation 12 are shown in Figures' 2 and 3, while Figures "4 show details of the ion to 13 Vorschubstat"

The feed station 12 ″ has a feed point 20 (FIGS. 4 to 6A), a feed foot device 22 (FIGS. 8 to 10A) and various drive devices 24 (FIGS. 7 and 11 to 13) *

The main task of the Vorsohubstätion 12 is a Pick up workpiece 26 at the feed point 20 and the Workpiece 26 wit a desired speed to

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- conveying station “The infeed station also has a Device for splitting the workpiece on »

In the Zuführsteile 20 (Figo 4 to 6A) are arranged in a stack on a platform 28 (Figo 5) the work pieces 26, which projects from the machine frame 30 _o in the feed point 20 'are further support rails 32 on the machine frame 30 '(Figo 4) are screwed tight «

fe. A cross rail 34 is releasably attached to the ends Support rails 32 fastened by clamps 36. Two support brackets 38 (FIG. 4) protrude from the transverse rail 34 below and are on the cross rail by adjustable clamps 40 attached to the one support bracket 38 sits near its ends a clamping rail 42, which is generally parallel runs to the support rails 32, but lies somewhat below the support rail 42 (FIG. 5) on the other support bracket 38 is a limit rail 44 attached to the front End of the clamping rails 42 and the front end of the

^w tongue rails 44 (Figo 4) are attached to the machine frame 30 with the interposition of angle elements 46.

On the clamping bar 42 a plurality of clamping brackets 48 are slidably mounted, each rod 50 carries a bracket _o The rods 50 are "loaded by springs 51 (Figo 4) Further, adjusters 53 are provided for the rods 50th One end of each rod carries an adjusting and holding finger 52, which is fastened to the rod 50 by a simple screw bolt 54 0? Ig « 4) ,

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The details of the adjusting and holding fingers 52 are shown in FIGS. 6 and 6A, in which each pinger 52 has a downwardly directed holder 56 with an outwardly bent end 58 Section _o Immediately above the horizontal section is an L-shaped component 60 to which a vertically arranged cushion 62 (Fig. 6) is attached is shifted onto the screw bolt _o For this purpose, the component 60 has a long slot 63 (Figo 6A) through which the shaft of the screw bolt 54 penetrates _o

The mounting rail 44 (Figs. 4 and 6) is a continuous rail with a long cushion 64 attached thereto and with a holder 66 which, like the holder 56, has an outwardly flared end. A screw bolt 68 connects the base for the cushion 64 and a shoulder of the holder 66 in the position shown in Fig 6 _{o, o}

Using the adjustment device .53, the Rods 50 (Figo 4) are adjusted so that the fingers on the edges of the stack of irregularly shaped workpieces 26 are present. The fingers 52 therefore keep the stack in an orderly condition and also oppose that

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Lifting several workpieces V The boundary rail 44 acts against the impermissible tendency of the linger 52 to disrupt the orderly condition of the stacked workpieces 26, against, so that the limit rail 44 an attempted by the movement of the fingers 52 overcompensation Figo6 prevented clearly shows the compression effect the pinger 52, in contrast to the limiting effect of the Boundary rail 44

In the manner described in detail later, the platform 28 is raised step by step when the workpieces 26 are fed one after the other to the sewing station 14, so that the uppermost workpiece is essentially always at the same height can act on the uppermost workpiece in order to lift this workpiece from its stack and to convey it upwards and forwards so that the workpiece can be fed to the sewing station 14 _o The device which brings about the gradual lifting of the platform 28 does not form part of the invention, but corresponds the known device as shown and described in US Patents 1 963 694, 2 083 296 and Re 20 581 _o

The Vorschubfußvorrichtung 22 is illustrated in Figo 8 to 10A "The cyclic operation of the feeding foot 70 shows the Figo 10A _e In this work moves the

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Feed foot first down to the lower position shown in dash-dotted lines 70 ^r ₀ During the downward movement of the feed foot 70, the foot touches the upper surface of the uppermost workpiece 26 ₀ An adhesive tape 76 assigned to the feed foot 70 touches the workpiece 26, so that when the feed foot 70 to the position shown in full lines intermediate position (FIG _o 10A), a workpiece 26 is liable "at this foot 70 ^

Movement point, a suction device, described in more detail below and belonging to the foot 70, is switched on, which bears the weight of the workpiece 26. The feed foot 70 is then pushed forward into the position shown at 70 " ₀ Then the workpiece is pushed forward by the feed foot conveying rollers moved away ■ «

The VorsaJiubfuß 70 protrudes from a tape housing 72 downwardly and is an integral part of this housing 72, which rests on a supporting roll 74, dt, not only swings, m to the forward movement of the foot 70 to cause, but also moves up and down so that the foot 70

has a lifting effect _o .

The three positions of the feed foot 70 during its cycle of movement are shown in FIG. 10A. An adhesive tape 76 is conveyed along the Yorsah lifting feet 70 during this movement cycle so that the uppermost workpiece 26 would be raised evenly to the first conveying conveyor provided with ribbing.

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■ roller 78 (Fig. 7 and 1QA) is guided «. The intermediate position The jack foot 70 is shown in full lines in Figure 10A · In the following Description assumes that the feed foot 70 down through the position 70 * shown in Fig. 10A moved

At the end of its downward stroke, the feed ™ settles foot on the top workpiece 26, the adhesive tape touches the uppermost workpiece 26, so that when the feed foot 70 is raised to the fully extended position in FIG. 10A Intermediate position shown in the lines, the uppermost workpiece 26 is lifted «, when pushing the feed foot forward the uppermost workpiece 26 is placed on the corrugated transport roller 78 in the position 70 ″ shown in FIG. 10A laid

The forward pulling effect of the first transport

roller 78 and the complementary perpendicularly aligned The short rubber roller 80 overcomes the holding force of the adhesive tape 76 and moves the workpiece 26 forward. To the Suction devices 82 are used to support the holding effect of the adhesive tape 76. Switching on the suction devices takes place immediately after. Beginning of the forward movement of the feed foot 70 from its lowest position 70Ό The suction devices 82 therefore only detect an ' umpteenth workpiece to be lifted 26 *

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Since a relatively fresh sticky surface is expediently constantly pressed onto the uppermost workpiece 26, there is a drive device for the adhesive tape which advances the adhesive tape 76 as far as the feed foot moves during its cycle G-ehäuses 72 and the drive housing 84 located drive device are illustrated in Figures 8 to _o 1OA

The tape housing 72 (FIG. 10) contains a supply spool 86 and a take-up reel 88. The supply reel 86 is rotatably mounted on a shaft 90, and the take-up reel 88 is rotatably mounted on the driven shaft 92. The take-up reel 88 is driven, with the tape 76 is pulled over the various guide rollers 94 in the direction of the arrows 96 down into the feed foot 70 and then moved upwards around the guide rollers 98 in the direction of arrow 100. The adhesive tape 76 is then wound on the take-up spool "

As the tape 76 gradually advances toward the lower guide roller 102, the sticky surface becomes one A certain section of the adhesive tape 76 is compared to the uppermost workpiece 26. The movement of the adhesive tape 76 takes place gradually, so that a fresh or relatively fresh portion of the adhesive surface is presented to the uppermost workpiece 26, which is then removed from the

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Feed foot is conveyed to the first transport roller 78 with the aid of the suction device 82 _o

Shafts 90 and 92 (Figo 2) extend from the housing 72 into the drive housing 84 o The movement of the gear present within the housing 84 is used intermittently to drive the shaft 92, which in turn causes an intermittent rotation of the take-up reel 88 _o Since the shafts 90 and 92 are stuck on housing 72 and drive housing 84, housings 72 and 84 move together ©

The device that controls the feed foot 70 through its cycle of movement in the manner shown in Fig. 10A will be described in detail later. For the present For purposes, however, it should be noted that the functions shown in FIG. 10A

The movement shown is actually due to the movement of the support roller 74 and the oscillating roller 104 (Figo 2 and 3) caused »The support roller 74 can move in a vertical direction move and can also oscillate, the oscillating roller 104 against it can only swing or turn, "

Since the feed foot 70 is mounted on the supporting roller 74 (Fig. 10), the vertical movement of the support roller 74 is automatically in a vertical movement of the feed foot converted The oscillating movement of the roller 74 causes a swinging movement of the feed foot _o

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If the feed foot 70 is in the intermediate position shown in full lines in FIG. 10A, then the feed foot 70 is pushed forward to the feed position 70 ″, because both the support roller 74 and the oscillating roller 104 move by Ί-κ ° in the direction of the clock . Eigeners, seen in FIG. 10, oscillate so that the housing 72 and the drive housing 84 are in the position 70 "shown in dash-dotted lines in FIG. 10",

Swinging now the rollers 74 and 104 in the counterclockwise direction mn 7r ° back, the housing 72 returns (10 FIG _e) back to its illustrated in full lines intermediate position and the feed foot 70 is also in a neutral intermediate position, while the workpiece 26 from The feed foot 70 has been stripped off and is located between the rollers 73 and 80, so that the forward movement of the workpiece 26 to the sewing station 14 begins O

The feed foot 70 now moves down into his lower receiving position 70 '(FIG. 10A), since the support roller 74 moves vertically downwards and oscillated over 15 ° The oscillating roller 104 also oscillates counterclockwise over 15 ° ο as soon as the support roller 74 has its When the downward movement has ended, the feed foot 70 is in the lowest position 70 * (FIG. 10A). With one now

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- When the support roller 74 is raised to the position shown in FIG. 10, the feed foot 70 takes the fully extended position Lines in Figo 10A shown intermediate position a".

The drive housing 84 (Pig. 9) is with the housing 72 for the tape so that a downward movement of the support roller 74 also a downward movement of both the drive housing 84 and the housing 72 with the feed foot 70 causes »

A pin 106 (Figo 8) is on a short section of the Roller 104 fastened with a clamp 107 and screw bolts 110 during the downward movement of the support roller 74 and at the corresponding downward movement of the drive housing 84 The housing 84 sits on the pin 106, which is inserted into an opening 108 in the drive housing 84 (FIG. 8) pushes in,?

During the upward movement of the support roller 74 and its final swinging backwards (clockwise), in which the feed foot 70 assumes the position 70 ", the housing 72 and the housing 84 are also moved backwards or around the roller 104 in a clockwise direction "tilted in Figo 10 shown in dotted line position 70" in this operation, the drive housing 84 replaced on the journals 106 _o

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The Zaßfen 106 is pushed twice into the drive housing 84 when the feed foot 70 is over his In other words, the feed foot falls 70 to its lowest receiving position 70V (Figo 10A) to Pick up a workpiece 26, then the pin pushes 106 into the drive housing 84, and the. Feed foot 70 to its intermediate position shown in full lines in FIG. 10 and then moves jerkily to the roll feed position 70 ″ shown in FIG. 10A, then the pin 106 pushes itself into the Drive housing o

Each time the pin 106 is pushed into the opening 108 of the drive housing 84, the pin 106 rests on the L-shaped rocker arm 112, which is rotated about the pivot _{pin 114 o} When the pin 106 touches the L-shaped rocker arm 112, the Rocker arm clockwise around pivot 114 (seen in FIG. 8) against the tension of springs 116 _O. As a result, pawl 118 is urged upward into engagement with a tooth of ratchet wheel 120. A counter pawl rotatably mounted at pivot point 124 and loaded by a spring 126 enables the indexing wheel 120 to be advanced clockwise in the direction of arrow 128 due to the angle of inclination of the indexing wheel teeth, but the counter pawl 122 prevents a counterclockwise direction

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Directional rotation or a return of the ratchet wheel 120o The ratchet wheel 120 is on a mute / eile 130 (Fig * 9) rotatably mounted and carries, also a small concentric gear 132, which with a large gear 134 in engagement is ο The large gear 134 sits on the driven one Shaft 92 connected to take-up reel 88 ",

During the forward movement of the feed foot 70 is the adhesive tape 76 is advanced by a small distance, and when it is placed on the uppermost workpiece 26, the adhesive tape 76 - again pushed forward a little »The adhesive tape 76 is so gradually wound from the supply reel 86 to the take-up reel 88 »

The advance of the adhesive tape 76 takes place after the The feed foot 70 is jerked forward and the workpiece 26 carried by the feed foot 70 is moved forward between ' rollers 78 and 80 has been moved and no longer in Contact with the adhesive tape 76 is «, Another arrangement for the timed step-by-step advancement of the adhesive tape 76 can have a compressed air valve which against a spring-loaded one pushing the adhesive tape forward Component works »With this version, the compressed air valve is actuated for a fraction of a second after thrusting the feed foot 70 forward for safety consists that the workpiece 26 has been separated from the adhesive tape 76 "Moved when the compressed air valve is actuated

the spring-loaded component against its leather and "operates a ratchet wheel, roughly in the way how the pawl 118 engages a tooth of the ratchet wheel 120 «, When the compressed air valve is switched off, the latch opens retracted their previous position and can then turn the ratchet wheel again when the compressed air valve is switched on adhere to ο

The drive housing 84 is on the support roller 74 with set screws 136 (Pig «, 8) secured» Furthermore, couplings 138 are used, which connect the housings 72 and 84 existing portions of the shafts 90 and 92 together Connect.) An indicator lamp connected via lines 142 (Figo 10) indicates when the take-up spool 88 is full is wound ", as soon as the take-up reel 88 one before When a certain diameter is reached, a contact arm 144 resting on the take-up reel 88 switches a microswitch 146 so that a circuit is established which either turns the indicator light 140 on or off

The couplings 138 can _s be used to facilitate the separation of the housing 72 of the drive housing 84 «This separation is desirable, when the take-up spool has been completely wound 8. ⁸ The housing 72 is then preferably replaced by a new housing 72. No attempt is therefore made to unwind the adhesive tape 76 from the take-up reel 88 or a new supply reel 86 onto the shaft

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- 90 to apply Preferably the used one is not more adhesive strips are unwound from the take-up reel 88 after the housing 72 has been removed in a location that is is not in the vicinity of the sewing machine 10. Display devices can also be assigned to the adhesive tape 76, which indicate the tearing or jamming of the adhesive tape «, When the adhesive tape ripens, one is assigned to the adhesive tape Clamping device (not shown) relaxed so that a switch is closed, which a warning lamp switches on or the further movement of the feed foot interrupts o · '

The movements of the Vorschußfußes 70 via the illustrated in Pig "1OA different positions are obtained by the motion of the swing roller 104 and the supporting roller 74, which are connected via couplings 148 _e The oscillating roller 104 is given an oscillating movement, on via the clutches 148th the! support roller * & 74 is transferred «. The oscillating roller 104 is rotatably mounted in the machine frame and can therefore only execute a rotary movement or oscillating movement an upward or downward movement or a forward thrust movement corresponding to the oscillating and linear movement of the support roller 74β

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The movement of the rollers 74 and 104 is initiated by a location below the table 152, operated by compressed air crank device 150 (Pig "2), which is shown in its" detail in Figo 12 and 13 _o the crank device 150 belonging pneumatic valves swing a short shaft 154 (Figo'13) over an angle of fo / 180 ° back and forth, around an eccentric 156 associated with this shaft 154 over an angle of 180 ° between a first position shown in FIG. 13 and a distance thereof "In the position shown in FIG. 13, rollers 159" which protrude from a disk 158 belonging to eccentric 156 touch the clamps 162 of microswitches 16O "If eccentric 156 is rotated 180 °, one of the dome 164 of the eccentric 156 outgoing holle 159 is applied to the terminal 462 168 of the microswitch 166 «, the cycle repeats itself when the rollers 159 are returned and s I apply to the terminals 162 *, As λ will be described in more detail later, the microswitches 160 and the microswitch 166 are assigned certain control circuits that allow the eccentric 156 to move back and forth between its two positions its various positions regulated “With the control circuit, not only can the feed foot movement change in time, but the feed foot movement cycle can also be interrupted and switched on again if

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the preschool foot 70 is a workpiece 26 from any round does not record ο

The eccentric 156 takes along a long rod 170 during its back and forth movement, one end of which is connected to the eccentric 156 on the pin 172 and the other end of which is connected to the upper end of a link 176 on the pin 174 _o The link 176 on pivot pin 178 on the machine frame rotatably mounted at the lower end of the link 176 is a short arm 180 fixed to the gears 182, 184 and 186 are associated _p constituting a part of a conventional paper feed device and serve 28 gradually the platform and slowly to be lifted when the workpieces 26 are removed one by one from the platform 28 by means of the feed foot 70 _o The uppermost workpiece 26 therefore remains essentially constantly at the same height "

The compressed air operated crank device 150 is of known design and has air chambers a «£ 150A and 150B to which pressurized air is supplied through an air inlet 150C is «, the compressed air presses against the inner piston (not shown), which consists of a chain and sprocket Arrangement (not shown) is assigned, the compressed air alternating between a compressed air chamber 150A and is then fed to the other compressed air chamber 150B. This makes a short output shaft 154 an alternating one Oscillating movement given over an angular arc of 180 °,

1 0 δ 8 1 5 / η? 8 3

The crank device 150 is with screw bolts using support brackets 15OE on a lower table .. 15OD attached compressed air is supplied to the compressed air chamber 150B via a hose 150I ¹ (Figo 2) «,

The gears 182, 184 and 186 are associated with the device which gradually raises the platform 28 as the ' Workpieces 26 are advanced individually one after the other by the feed foot 70 ", in each case by the crank device 150 caused cycle of the advance foot it, 70 the handlebar 176, as shown in Figo "2, swung out so that the short handlebar 180 cooperates with the gear 182 to raise the platform 28 from time to time so that the top Workpiece 26 remained substantially at the same level with respect to the lower part of the feed foot 70 The apparatus for incrementally lifting platform 28 is in the paper feeding and printing industries known and does not form part of the invention

Fig «2 shows other details of the device for incremental lifting of the platform 28, namely a chain 188 with a counterweight 190, which the chain 188 in Working engagement with a chain wheel (not shown) located behind .dem gear wheel 184, with the, stepwise upward movement of the platform 28 moves the counterweight 190 downward.

One end of a rod 192 (Mg. 2) is attached to the

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Fen 194 is connected to the handlebar 176 and engages with its other end on the pin 196 of a sector-shaped cam disk 198, which swung around the pin 200. When the eccentric 156 oscillates, the long rod 170 is moved back and forth given, which reciprocates the rod 192, which is connected to the handlebar 176 at the pin 194. The reciprocating motion of the rod 192 swings the cam 198 about its pivot -20O ₀

The cam disk 198 (FIG. 2) has a convex upper edge which consists of a long, relatively straight track 202 which merges into a short arcuate track 204. When swinging the cam plate 198 the upper edge of the cam plate contacts the cam follower 206, which carries a contact 208 (Figo 2) _o is attached Further, the oscillating roller 104 at the contact 208th The contact or lever 208 rests on the convex upper edge of the cam disk 198 * The cam follower 206 is pressed against the upper edge of the cam disk 198 by a spring (not shown) or contact part 208 of the cam follower 206 rotated in the opposite direction If the cam disk 196 rotates counterclockwise about the pivot 200, then the cam follower 206 "rotates in the clockwise direction when the oscillating roller 1o4 as

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Pivot point is viewed as the rocking roller 104 at Cam follower 206 "is attached"

The oscillating movement of the cam disk 198 "thus causes an oscillating movement of the oscillating roller 104". If the cam disk 196 is rotated counterclockwise and the contact part 208 rests on the long straight path 202 of the cam disk 198, the oscillating roller 104 is rotated uniformly in the clockwise direction When the contact part 208 reaches the short arcuate track 204, the oscillating roller 104 is rotated faster because the arcuate track is much steeper than the long track 202 of the cam disk 198o of the feed foot 70 which advances to feed a workpiece 26 to the corrugated first transport roller 78 «

As mentioned, the oscillating roller 104 can only carry out an oscillating movement, but can move in a straight line do not move. However, the oscillating movement of the oscillating roller 104 is controlled by the coupling 148 and the cam disk converted into an oscillating and linear movement of the support roller 74 to which the feed foot 70 is attached «,

The support roller 74 can move in a straight line because it does not is inhibited in the same way as the oscillating roller 104, Since

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the Yorschubfuß 70 moved with the support roller 74 is by the oscillating and linear movement of the support roller 74, the Yorschubfuß 70 moves over its cycle and that Workpiece 26 is delivered to the corrugated transport roller 78

At the ends of the transport roller 74 links 212 are attached, from which a roller 214 (Figo 3 and 3A) _{extends o} The roller 214 (Figo 3A) moves against the guide cam disk 210, which is attached to an inner wall of plate 216 «.

The guide cam 210 has a long straight edge 218 that extends over an abrupt or steeply changing one Curve 220 merges into a short horizontal railway line 222 O

The guide pin plate 210 controls the linear movement of the support roller 74 when the movement of the roller 214 is controlled by the straight edge 218 and the short distance 222 of the cam _{plate 210 o} This occurs because the clutch 148 loosely embraces the support roller 74, which at 224 · pinned to the oscillating roller 104 is ₀

The oscillating movement of the oscillating roller 104 in the direction of the Clockwise, seen in Figo 3, thus effects in this way the lifting of end 226 of coupling 148 because the other end of coupling 148 is pinned to the oscillating roller »

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In this way the entire support roller 74 is raised. In this section of the cycle, the roller 214 is in its lower dashed position 214 ^r of FIG. 3Ap so that the roller 214 therefore moves upwards against the long straight edge 218 of the guide cam disk 2.10 when the oscillating roller 104 continues further in Swinging in the direction of the clockwise

The upward movement of the roller 214 continues until the abrupt curve 220 is reached, whereupon the Roller 214 moves in a horizontal path along the short horizontal path 222. This change from the straight edge 218 on the horizontal rail line 222 is in a sudden forward thrust on the feed foot 70 converted ο as soon as the cure device is its If the direction is reversed, the direction of movement of the cam disk 198 is also reversed. The oscillating roller 104 is then rotated in the opposite direction as the roller 214 first moves a short distance along the horizontal Track 222 moves and then down on the straight line Edge 218 shifts so that the feed foot 70 is placed on the next workpiece 26 to be advanced will. The roller 394 214 can be spring loaded so there is a shock absorber effect at the sudden change of direction Roller 214 along the straight edge 218 the roller is held essentially rigidly in place, with

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would take during the movement of which is generated by the operation of the swing roll 104 _o In other words, the roller 214 may be only freely move up and down as the swing roll 104 to vibrate, and the depressed to the rectilinear edge 218 roller 214 can do not move sideways »

However, the roller 214 moving in the horizontal direction on the short track 222 swims and floats slightly in the horizontal direction. The reason for this is that the support roller 74 is loose from the end 226 the coupling 148 is held and that with the horizontal movement of the roller 214 a swimming or plotting movement or a movement against the spring pressure exerted against the roller can take place « free, but a bit forward

= effect of the feed foot can be generated in this part of the cycle. It is believed that this will apply an additional shock to the forward movement or pressure of the feed foot 70, with a rapid return movement of the feed foot 70 when the workpiece 26 has been delivered between the corrugated rollers 78 and 80, _{or the like}

If the feed foot is lowered onto the uppermost workpiece and the adhesive tape 76 touches the uppermost workpiece 26, then the suction device 82 is switched on as soon as it is

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the feed foot 70 has lifted over a certain short section from its lowest position _o In this way, the simultaneous lifting of several workpieces is prevented, which could possibly happen if the suction device were working at the moment or when the adhesive tape 76 is in contact with the workpiece _O

Preferably two or more are spaced apart vertical suction devices are used to prevent the workpiece 26 from sagging when it is lifted between the suction devices 82 is made according to the properties and dimensions of the respective workpiece changed.

Switching on the vacuum in the suction device leading hose 222 is regulated by a solenoid (not shown), which after a predetermined The time following the initiation of the lifting of feed foot 70 is switched on «

The vacuum is applied about a tenth of a second after the feed foot has been raised has begun". The follow-up time should last so long that the top workpiece is a sufficiently large distance from the immediately below the workpiece and by the action of the vacuum that immediately below the uppermost workpiece. Workpiece not with upwards is lifted "

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When lifting and pushing the topmost workpiece 26 between the rollers 78 and 80 is a constant .Zug exerted by the suction device 82 on the workpiece 26 »After the. Insertion of the workpiece between the rollers 78 and 80, a cam disk (not shown) is mechanically switched from the feed foot to that solenoid turn off that the suction device 82 is turned on has ο it is desirable to switch off the vacuum in the suction device 82 shortly before the workpiece 26 is between the Rollers 78 and 80 is guided to provide resistance to the forward pull of the workpiece by rollers 78 and 80 to reduce,. As soon as the feed foot 70 is back has lowered and begins to lift, the mentioned time delay device is switched on again and makes the suction device 82 is operable again via a solenoid in the manner already described

As already mentioned, the platform 28 is gradually pushed upwards during work so that the top workpiece is kept essentially at the same height Rejection device which prevents a double layer from being passed through the elements of the automatic sewing machine _o The rejection device consists of a thickness meter 230 and a rejection flap 232 _o

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The thickness meter 230 (J ¹ Ig ₀ 11) is carried by a carrier 234 which extends across the width of the system o The thickness meter 230 has a feeler finger 236 that protrudes down from the bracket 238 attached to the carrier 234 ″ Feeler finger 236 is vertically adjustable and can be adapted to materials that have different thicknesses, If two workpieces 26 are passed between rollers 78 and 80 at the same time, the thickness gauge 230 is touched by the double thickness of these workpieces. Feeler finger 236 is so sensitive that a micro switch (Mcht shown) is closed, which actuates a solenoid 240, which rotates the reject flap 232 counterclockwise, as seen in Pig * T, about the pin 242 * The two workpieces 26 can therefore not over the flap 232 to IThe sewing machine station 14 arrive “The open rejection flap acts rather as a drop flap or catch flap that closes the two workpieces in a container m recirculation passes downwardly "The solenoid 240 (FIG _o 7) to a piston 244 to which a rod is fixed 246 which -is connected to the pin 242 with the Zurüekweisungsklappe 232"

On the carrier 234 a photocell and light source arrangement 248a is attached, which has a highly reflective surface 250 _t over which the workpieces 26 run after leaving the rollers 78 and 80. The reflective surface 250 is arranged in such a way that the light rays coming from the light source are constantly reflected to the photocell,

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Then, -when a workpiece extends over the area 250 "emotional*

During normal operation of the system, the workpieces one after the other at predetermined intervals rollers 78 and 80 and then over the reflective Face 250 passed to roller 252 (Fig. 11).

As soon as the front edge of the workpiece 26 moves over the reflecting surface 250, the light beam to the photocell 248 is interrupted. As a result, the feed foot 70 is held in its forward thrust position until the. . The light beam is restored and the workpiece 26 has moved completely over the reflective surface 250 «The. The feed foot can then go back and down on the next workpiece- »This work is achieved by means of a circuit and an associated control device, which will be described in more detail later ₀

If the feed foot 70 fails to pick up a workpiece and does not pick up a workpiece, the will lift Feed foot 70 continues and is then pushed forward in the usual manner. However, the feed foot 70 is not Has picked up the workpiece and no workpiece is feeding the rollers 78 and 80, the light beam also becomes the Photocell 248 not interrupted in the usual way «, If the light beam remains after pushing the feed

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foot 70 exist, then a circuit, which is assigned to another control device and is described later, is switched on which, after a short waiting time, moves the feed foot 70 over its cycle · The feed foot 70 is therefore moved backwards and then downwards in order to pick up another workpiece 26 » If the feed foot 70 does not pick up a workpiece 26 again, it is raised again and then pushed forward _o The cycle then repeats itself in the manner described and turns on a lamp _e

A short roller 254 (Fig- 7) lies vertically above the roller 252 in order to move the workpiece to the reject flap fl: 32 and beyond this flap 232 in the direction of the conveyor belts 256 to move «.

The short rollers 80 (Figo 7) are attached to a rod 258 which extends over the entire width of the system « The short rollers or cylinders 254 are attached to a hold-down plate 260

After the workpiece 26 has passed over the rejection flap 232, the workpiece (FIG. 3) lies on the conveyor belts 256, with a portion of the workpiece 26 below a preferably made of clear plastic long folding plate 262 is located by one near the rollers

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252 and 254 runs over a fairly large extent to the cutting station 14 »The plate 262 is attached to a slightly elevated rod 264 (Pigο 7), which extends over the width of the system, and goes off. this rod from _o The folding plate 262 is inclined to the flap 232 and liegt'dann at its greatest length over two conveyor belts 256 (FIG _o 3) <> The endless conveyor belts 256 extending between a driving roller 266 and a guide roller 268 (Figo 3) o If desired, both rollers 266 and 268 can be driven. The roller 266 is driven by means of a disk 270 which is driven by the motor 272 (FIG. 2)

A support 274 (Fig. 7) is provided on one side of the machine near the drive roller 266 to hold the first end of a crossbar 276 which extends across the width of the machine and the other end 278 of which is in a plate 216 (Fig. 3 attached) is _o the support 274 holds the one end of a long compressed air tube 280 whose other end is fixed on a support 282 (Figo 3 and 17) _o pressurized air is long compressed air tube fed 280 via an air hose 284th

When the workpiece 26 is advanced over the flap 232 and then onto the drive roller 266 (FIGS. 3 and 7), certain sections of the workpiece 26 lie between the folding plate 262 and on the conveyor belts 256 _o other sections

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of the workpiece 26, which are not located below the folding plate 262, lie on the other conveyor belts 256 on.

The long tube 280 has a plurality of stationary spaced apart openings 286, each opening inwardly facing the conveyor belts 256 ,, Therefore, several compressed air streams flow 288 auÖ the tube 280 from _o The compressed air jets 288 are directed against the long edge 290 of the workpiece 262, which lies next to the tube 280 (FIG. 3), so that the edge 290 is doubled by the action of the air jets 288 and placed on the folding plate 262 ". The presence of the jets of compressed air 288 keeps the edge 290 folded against the folding plate 262 for much of the workpiece movement of the workpiece over the conveyor belts 256

After the transition over the drive roller 3 § 266, the upper sections of the conveyor belts 256 (FIG. 7) run over a short plate 292 "whose lip 294 holds one edge of a base plate 296 made of stainless steel". During the movement of the workpiece .26 on the conveyor belts with the folded edge 290, each workpiece 26 is guided under a second hold-down plate 298. A side guide 300 extends essentially over the entire length of the second hold-down plate 298, but extends slightly backwards over the plate 298 The side guide 300 ends in an outwardly bent one

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o the curved edge 302 that allows the insertion of the folded Edge 290 is supported under the second hold-down plate 298, which also has an upturned leading edge 304, which facilitates the insertion of the workpiece 26 from its folded edge under the second hold-down edge 298, .has ο

An additional compressed air tube 306, to which compressed air is supplied from the hose 208, extends into the bent open Leading edge of the hold-down plate 298, so that the air flow flowing out of the tube 306 against the folded edge 290 of workpiece 26 is straightened in the way shown in FIG. 14, "the lateral guide 300 is supported by an upright plate supported by adjustment devices 310 in the one shown in FIG Is kept adjustable in a way »

The workpiece 26 with the folded edge 290 is then conveyed under the support bar 312 and then onto the guide roller in the sewing station 14 and onto the sewing machine plate 314 which is adjustably supported by stands 315 which extend from the sewing station carriage _e The workpiece 26 (Fig “3) is conveyed to a point below the sewing machine head 316. Since the rear edge of the workpiece 26 is still lying on the conveyor belts 256, the workpiece 26 continues to be pushed towards the machine head 316

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Others in Pig «. The details shown in FIG. 2 are the compressed air and vacuum supply device 318, which is of "known design. FIG. 2 also shows that the entire feed station 12 as well as the section of the system located between the rollers 266 and 268 is arranged on a single carriage 320, the on ground wheels ο drives This facilitates the transport of the whole feed station and also enables a temporary moving away of the feeding station 12, when other combinations are desired, and Z ₀ B switched ₀ a pleating machine or a Knopflochherstellungs- and -nähmaschine into the plant soil "the sewing station 14 (Figo 2) is arranged on a carriage 324 which travels on ground wheels 326 which rotate in a direction perpendicular to the wheels 322 (also Fig. 1A) «,

On the carriage 320 (Fig. 2) is a spring loaded lever 328 is present, which operates a resilient button 330 (Figo 1B) that rests against the side of the carriage 324 to to prevent movement of the via 324 with respect to the carriage 320. Similar levers and resilient buttons are available also present on other sewing machine units which are to be arranged in series with the carriage «.

A spring-loaded guide roller 332 (Fig. 15) is arranged immediately above the guide roller 268. The ends of the roller 332 (FIG. 16) are mounted in side plates 333 which are connected to a rail 335 at the pivot point 334 ea-e

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are adjustable and carried on a rod 336

“Each plate 333 is supported on a coil spring 337, which can be adjusted using a screw 338 on the rod 33.6, »

When passing over the driven roller 268, the workpiece 26 moves with its folded edge 290 into the draw-in point between the opposing rollers 268 and 332 and is advanced to the sewing station 14 and the sewing machine head 316.The workpiece moves freely below the sewing machine guide 340 (Figo 15), which is preferably made of a transparent material, the workpiece 26 is then guided along the sewing machine table 314 to a wheel and a disc 342 which is carried on the shaft 343 of the hold-down device 344 _o The hold-down device 344 is designed so, that when a workpiece 26 is fed to the sewing machine head 316, the wheel 342 is held above the table 314 until the workpiece 26 is below the sewing machine head 316 and the sewing machine head starts sewing O

After a vorherbetimmten time that has elapsed since the starting of the sewing machine head 316, Z is ₀ B rotated ₀ by interrupting a coming of a second photocell array 346 light beam hold-down device 344 downward, so that the wheel disc 342 abuts against the workpiece 26 , which is now under

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the sewing machine head 316 is advanced through ₀

The hold-down device 344 has two long parallel arms 348 (Fig «, 16), which on the rod 312 of holders 350, which grasp under the rod 312 and which are carried on the arms 348 by adjustable screws 352 are attached «, the arms 348 are connected by short spacers 354» the shaft 343 of the wheel disc 342 and device 344 (FIG. 16) is rotatable on parallel arms 348 at mounting locations 356 and 358 attached- «,

The wheel disk 342 of the hold-down device 344 becomes held above the sewing machine table 314 so that a workpiece 26 passes below the sewing machine head 316 The hold-down device 344 is then rotated downwards by tilting the support rod 312, so that the wheel disc 342 rests on the workpiece 26 "

This tilting of the holding-down device 344 is performed by the operation of an air cylinder 360 (FIG _e 15 and 16) _β The up and down movement of the cylinder 360 causes a tilting movement of the support rod 312, "Since the holding-down device is mounted 344 by the holder 350 to the rod 312 , the wheel disc 344 is lowered or raised ο

The work of the air cylinder 360 (Figo 15) lifts and

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alternately lowers one of the cylinder 360 upwards protruding piston362 (Fig. 15) ο The actuation of the cylinder 360 takes place by means of compressed air which is "supplied" via a hose 364,

The upper end of the piston 362 (FIG. 15A) is connected to one leg 366 of a U-shaped rail 368, the other leg 370 of which has an opening (not shown) through which a threaded Shaft 372 of a long screw bolt 374 allows «»

A drive finger 378 (Pigο 15A and 16) is lying * on the shaft 372 attached. For this purpose, there is an opening in the drive finger 378 which enables the drive finger 378 can be pushed onto the shaft 372 in the manner shown in FIG. 15A and between coil springs 376 lies. A nut 380 (Fig. 15A) holds all of them Share together ,,

An upward movement of the piston 362 caused by the operation of the pressure cylinder 360 presses the rail 368 upwards and therefore lifts one end of the drive finger 378o. However, the other end 382 of the drive finger 378 is rigidly connected to the support rod 312 by the threaded nut 384 (Fig. 16). The support rod 312 is at each end Rotatably mounted in plates 333, the upward movement of one end of drive finger 378 swings or tilts that is, the support rod 312 in a certain direction, since the other end 382 of the drive finger 378 is on a shoulder

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of the first end of the support rod 312 is attached and since the support rod 312 is rotatably mounted with the plate 333 is ο

By lifting the piston 362, the support rod 312. counterclockwise, as seen in FIGS. 15 or 16, tilted. Since the hold-down device 342 is connected to the support rod 312, the counterclockwise movement of the support rod 312 rotates the entire hold-down device 344 in a counterclockwise direction, as seen in FIG the wheel disk 342 is moved downwards and placed on a workpiece 26 which is already located below the sewing machine head _{or the like}

The workpiece 26 is already under the sewing machine head 316 is present because the wheel disk 342 is placed on a workpiece only after a predetermined short time has elapsed becomes, dje the interruption of the light beam from the associated photocell array 346 follows. As already mentioned, the light beam is only interrupted when the leading edge of a workpiece under the light source and photocell assembly 346 on the sewing machine head 316 is present, runs through,

A leaf spring 386 (¥ ± g _o 15 and 16) is attached to the shaft of the wheel disk 342

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the leaf spring 386 also moves down and lies on the workpiece 26 to the movement under the To facilitate machine head 316 through,

The Figo 15 shows still other details in the sewing point and in connection with the. Sewing machine head 316, which has a sewing needle 388 and a presser foot 390 _β A mirror 392 (Figo 16) is provided in the sewing surface in order to reflect the light beam coming from the photocell arrangement 346 and direct this light beam to the light-sensitive cell of the arrangement 346, The Sewing machine head 316 (FIG. 15) also has a support bracket 394 to which an additional support bracket 398 is attached by means of a button 396, which has an arcuate guide 400 for a binding material 402, which is threaded into the guide 400 and then guided under the presser foot 390 When the presser foot 390 normally works in conjunction with a material pusher, the binding material 402 is pulled down through the presser foot and beyond the presser foot at the same time as the workpiece 26 is pulled under the sewing machine head 316 while the sewing needle 388 is working _o

If necessary, an auxiliary feed device (not shown) de »sewing machine head 316 to be assigned» Such an auxiliary device contains a gear ^ belt, which rests on the workpiece and which is switched on as soon as the hold-down device 344 moves the wheel disc 342 downwards

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moved and placed on a workpiece 26. The auxiliary feed device is driven by a sewing machine chinenmo tor operated special device, and that The tape is driven when it is applied to a workpiece 26 which is located under the capping machine head 316 has moved ο

If the light beam of the photo line arrangement 346 is interrupted, so the sewing machine is switched on immediately When the trailing edge of a workpiece 26 has moved past the sewing machine and the light beam is restored is, the sewing machine is turned off and the hold-down device 344 is by the downward movement of the piston 362, which is initiated by the operation of the air cylinder 360. This will also the leaf spring 386 raised and also any auxiliary feed device, which is possibly assigned to hold-down device 344 «.

In a preferred mode of operation, the auxiliary feed device operated by a connection with the sewing machine motor so that when the sewing machine is switched on the conveyor belt of the auxiliary feed device is also moved «As will be described in detail later, the Switching on the sewing machine also switched on a special control device, which is like a counter works because the number of stitches executed by the sewing machine counts.

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The auxiliary pusher conveyor belt moves, but the auxiliary pusher itself remains above the workpiece 26 in the raised state until the required predetermined time has expired and the pressure cylinder 360 is turned on to move the hold down device 344 down and on to lay a workpiece 26 ,, 'The auxiliary device is preferred coupled to hold-down device 344 so that hold-down device and auxiliary pusher are switched on at the same time and lie against the workpiece 26 ο

After the workpiece 26 has moved beyond the sewing station 14, the workpiece runs between the driving feed roller 404 (FIG. 18) and the counter roller 406, endless conveyor belts 408 run around the feed roller 404 and also around a guide roller 410 in the same way like the conveyor belts 256 _o If desired, tensioning devices (not shown) are used for the conveyor belts in order to achieve the desired belt tension and the desired belt spacing «

As soon as the workpiece 26 moves out of the sewing station 14, the workpiece is lifted by the rollers 404 and 406 the conveyor belts 408 are pulled and then moved to the cutting device 412. The backing roll 406 (Fig. 18) is rotatably supported on a plate 414 which is rotatably attached to the pivot on a bracket 418 · The other end

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the plate 414- is supported by a coil spring 420 elastically applied, one end of which is anchored to a frame 422 «

The drive feed roller 404 is in the frame 422 rotatably mounted and is driven by the moving chain 424 (Fig. 19) «. The chain 424 is of the Drive wheel 426 driven and runs over a second wheel 428 and also over the driving feed roller 404 (Figo 19) »

The drive gear 426 receives its driving by a motor 430 which drives the time 432 at which the sprocket is fixed to 426, "From ^e lfi £ ^m second sprocket 428 extends a second shaft 434 having a third chain wheel 436, which on the other The second chain 438 runs over a fourth chain wheel 440, "The chain 424 not only drives the feed roller 404, but also drives the second chain 438",

As FIG. 19 shows, the shaft 442 couples the fourth chain wheel 44Q to the chain wheel 444 ″. From the sprocket a chain 446 is driven, which also runs over the additional sprocket 448. By moving the second Chain 438 is also driven by chain 446,

Fig. 19 shows that the additional sprocket 448 on the one end of a long shaft 450 is attached, which the

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1560859

A wheel disk 454 is attached to the other end of the long shaft. A rod 456 is connected to the pin 438 with the wheel disk 454, the other end of which carries a pinger 460 which is loaded by a helical spring 462 «. The pinger 460 is carried by the rod 464. A drive link 466 is attached to the pinger 460 and moves with the pinger 460. As the chain 446 moves, the long shaft 450 and also the wheel disk are rotated so that the rod is eccentrically connected 456 is given a crank movement with the wheel disk 454 when the wheel disk 454 rotates. The rod 456 (Pigo 19) is under the tensile effect of a helical spring 468 _O

The crank movement of the rod 456 moves the pinger 460 back to its connection point with the rod 464. and herbev / egt, so that a back and forth movement of the handlebar 466 took place. The handlebar 466 (Pigo 14) is a Associated gear 470, which meshes with the gears 472 and 476 via certain intermediate gears

The gears 470, 472, 474 and 476 form part of a known paper lifting and lowering device, similarly like the handlebar 150 and the gears 182, 184 and 186 “Since the workpieces 26 are arranged in alternating bundles 478 and 480 are stacked, the stacking platform is gradually or gradually lowered so that the height of the

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uppermost workpiece 26, which has just been placed on the stacking surface, remains essentially the same. In a known manner, a chain 484 and a counterweight 486 are associated with the lowering device

As soon as a workpiece 26 is not part of the group consisting of light source and photocell _p the sewing machine head 316 associated with assembly 346, the light beam This recovered is, the cutting device 412, the width of the plant above the conveyor belts 408 in the in the Fig * 25 26, 27 and 28 reciprocated manner shown

As already mentioned, the conveyor belts 408 convey the workpieces one by one from the sewing station to the cutting device 412 over and over the cutting device o In a preferred embodiment, after the rear edge of a workpiece 26 on the sewing machine head 316 has passed and the light beam in the photocell array 346 has been restored, a rush of power is sent to the cutter 412 the οchneidvorrichtung over the entire width of the System is moved and thereby a cutting process on a workpiece lying in the path of the circular knife disc executes.

The cutting device 412 consists of a motor 488 (Pig. 25) and a constantly errant circular knife $ 490.

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The circular knife 490 is moved across the width of the system by a «drive chain 492 (FIG. 25), which has a belt 494 drives, to which a slide 496 is attached, which carries the circular knife 490. The slide 496 becomes along path 498 in that shown in FIGS Way back and forth,

The circular knife 490 (Figo 25) is with a protective cover provided, which also serves to hold the shaft 502 carrying the circular knife 490. "The carriage 496 has a V-shaped groove 504 for receiving the circular knife 490 »

The details of the carriage 496 lying in the path 498 are shown in FIG. 26, in which the carriage 496 is fastened to the upper surface of the belt 494 with bolts 506 _o Moving the belt 494 in a certain direction causes the carriage 496 to collapse drawn with the circular knife 490 in relation to the fixed track 494 over the entire width of the system. The bottom plate * $ 6 of the carriage 496 is quite narrow (Fig. 28) and ends in the vicinity between the first conveyor belt and the second conveyor belt 408. An auxiliary plate (not shown) can be assigned to the base plate of the carriage 496, whereby the auxiliary plate extends over about half the width of the plant. The auxiliary plate is used to avoid all obstacles that can act on a workpiece 26 when the workpiece moves over the convex edges (Figo 27)

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the path 498 moved in the direction of the arrow shown in FIG

The carriage 496 is moved back and forth by the device shown in FIGS. This device has a compressed air cylinder 508 with supply hoses 510 ". When the cylinder 508 is working, a piston rod 512 is moved back and forth, to which a rack 514 is attached via a rod 516". With the rack 514 there is a first gear 518 The first gear 518 is connected to a second gear 520 via a shaft 522. The second gear 520 is in engagement with a third gear 524 (Fig. 25) which is mounted on a driving shaft 526 on which a sprocket 528 is used Drive of a chain 492 is seated “A guide chain wheel 530 is attached to a stub shaft 532 and carries the chain 492 _{or the like}

When the compressed air cylinder 508 works, the piston rod 512 is moved back and forth, which sets the first gear 518 in oscillating movements, which are transmitted via the second gear 520 to the third gear 524, which gives the drive shaft the oscillating movements that the chain 492 via the Sprocket 528 drives _o on chain 492 is

a fixed, a holder 534, the nose 536 is accommodated in existing ATAX in the belt slot 494 _o The reciprocating movement of the piston rod 492 is transmitted through the holder 534 directly to the belt 494 "Since the carriage

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496 is attached to the belt 494 (Pig »26), takes place at the one triggered by a predetermined current surge If the cylinder 508 works a reciprocating movement of the slide 496 with the associated circular knife 490 the entire width of the sewing machine,

During the reciprocating movement of the piston rod 512, the motor 430 driving the conveyor belts 408 can either be switched off or decoupled from the drive of the conveyor belts by a coupling (not shown). During the to-and-fro movement of the slide 496 for cutting a workpiece 26, the workpiece therefore stands still. Once the carriage 496 terminates its stroke, again takes a drive of the conveyor belts iurch the motor 430 _o This work is achieved in that the motor and the air cylinder Wirden controlled 508 via appropriate relay devices so that when working the cylinder 508 does not drive the conveyors 408 by the motor 430 takes place _o

The workpiece 26 is now in a state in which the workpiece is on the bundle 478 or on the Bundle 480 is stacked o Please refer to Fig. 21, which shows a workpiece 26 which is fed to the roller 410 via conveyor belts «

As the workpiece 26 moves through the stacking station, it is moved from the conveyor belts 408 to an upper one

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Wai ze 538 and a lower roll 504 passed, which led the workpiece down to a long reciprocating flat container or a trough 542 (FIG _o 21) The feeding of the workpiece 26 to the trough 542 is substantially supported by a conveyor belt 544, that the workpiece 26 to close to the rearmost end of the. System moved so that the entire workpiece 26 rests on the trough 542- ,,

When the workpiece 26 approaches the rearmost end of the system, the workpiece moves under a photocell 546, the light beam from the photocell 546 being interrupted and the trough 542 as a result retreating in paths 548 (FIG. 24) or moving forward, so that the workpiece 26 falls down and is deposited on other workpieces 26 which are in bundles 478 and 480 on the stacking platform 482 _{or the like}

When the light beam coming from the photocell 546 is interrupted, a current surge is generated through a circuit Pneumatic cylinder 550 (Figo 21) supplied to the cylinder 550 is mounted on legs 552 on the machine frame 554 and is supplied with compressed air via hoses 5 and 6 When the cylinder 550 is switched on, the spring-loaded piston 558 with the associated short rack is activated 560 moved back and forth «, the rack 560 is in Engaging with a gear 562 that sits on a shaft that carries a large ratchet 568 that is on the opposite end of shaft 564 (Figo20 and 2i) is located,

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A chain 570 runs over a lower sprocket 568 and an upper small sprocket 572, which is associated with a drum 574 and rotates the drum 574. With the drum 574, a gear 576 which is in mesh with a small gear 578 rotates. A connecting rod (FIG. 20) extends from the first gear 578 to a second gear 578 _e. The gears 578 sit on supports 580 _o

Both small gears 578 mesh with long racks 581 mounted on the underside of the reciprocating trough 542 along each side of the trough, _{or the like}

When the light beam from the stack photocell is interrupted 546, the cylinder 550 is switched on and moves the short rack 560 outwards, so that the gear and consequently the endless chain 570 counterclockwise as seen in Pig. 21, rotated or * moved Since the drum 574 rotates with the endless chain and since the gear 576 rotates with the drum 574 rotates, the gear 576 rotates counterclockwise. The small gears 578 rotate therefore clockwise, as seen in Pig · 21 »Da die long racks 581 mesh with one of the gears 578, the long racks 581 and therefore the trough 542 retracted forward, so that the workpiece 26, which was on the trough 542, and because of the

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opposite movement of the belt 554 can not move back with the trough 542, by its own weight falls on the other workpieces 26 which have already been previously deposited on the stacking platform 482o

After the cylinder 550 has pushed the piston 558 to its furthest forward position, the cylinder 550 begins to _{move the piston 558 back o} The return stroke of the piston 558 moves the endless chain §8 578 in a clockwise direction so that the racks 581 are pushed backwards and the pressure 542 is moved to the reverse position shown in full lines in FIG. 21, in which the depositing of another workpiece 26 takes place on the trough and the light beam of the stack photocell 546 is interrupted, so that the above-described operation is repeated

Upon return of the trough 542 to its retracted position, a pusher or bump pad 582 becomes pressed onto bundles 478 and 480 to force the bundles down on platform 482 and layer them more tightly or to produce more compact bundles «. This significantly increases the capacity of the system

The pusher 582 shown in more detail in Pig «, 23 is used by Rods 584 mounted on the underside of the trough 542. The rods 548 (Pig x 20) are on the

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Underside of trough 542 fastened with tenons 585 The pusher 582 (Pig »23) consists of two end rollers or end rollers, 586, set in slots 587 parallel plates which carry the end rollers 586. The end rollers 586 have pins 590 which penetrate the rods 584 and are stored in the slots 587 of the plates 588 ".

There is also a center roller 592 (Fig. 23) with Pins 594, with which the roller 592 is mounted in the plates 588, «coil springs 596, which are located between the The central roller 592 and the end rollers 586 extend, give the rollers 586 and 592 a greater! Spring force, which the The floating effect of the rollers 586 is favored within the permissible limits given by the length of the slots 587,

the
The pusher 582 (FIG. 21) is suspended from the trough 542 with / relatively long rods 584 "When the trough 542 is withdrawn, the trough is moved quite far forward, as the dash-dotted lines in FIG. 21 show". Immediately below the tracks 548 (FIG. 24) there is now a lifting rail 598 (FIGS. 21 and 24) which extends over the entire width of the system. When the trough 542 and the pusher 582 are withdrawn, the rods 584 come into contact of the lift rail 598, the rods being lifted upward and located between the trough 542 and the lift rail 598 (FIG. 24) when the trough 542

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is close to its foremost position "

If the trough 542 to again is moved back to its illustrated in full lines position (Figure _s 21), then through the rods 584 of the lifting rail, and the jacks 582 coincides with pressure on the bundle 478 and 480 workpieces from those are stacked on the platform 482 o In this way, an impact pressure is applied to the bundles 478 and 480 »

The work pieces 26 slide as a result of the sweeping action of the moving belt 544 beneath the stack photocell 546 through "A mirror 600 (Figo 20) reflects the coming from the light source light beam to the photocell array 546 _O In case of interruption of the light beam by passing path of a workpiece 26, the Trough 542 withdrawn in the manner described

The stacked photocell arrangement 546 (FIGS. 20, 21 and 22) is arranged on a movable crossbeam 602 which is fastened at one end to a wheel disk 604 which moves on a rail 606 «, the other end of the crossbeam 602 is simply stored horizontally in a track 607 «

Due to this design, the stack photocell at any time in the one or in the other position of two positions which are shown in Figure "21, be placed · The advanced position is shown in Figure" 21

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shown in phantom, and the retracted position is shown in Fig »21 in full lines»

The stack photocell 546 runs out of theirs from time to time advanced position moved to their retracted position, creating alternate lying bundles 478 and 480 on the stacking platform 482. The photocell 546 is in its fully retracted position Position in Fig. 21, then the light beam of the photocell interrupted at a point which is somewhat distant from the trough 542 formed as the photocell 546 is in its retracted position. If the photocell is inserted into the Shown in dash-dotted lines * Position of the pig · 21 advanced, then a bundle 480 is formed »The alternating lying bundles 478 and 480 are formed when the stack photocell is withdrawn or pushed forward «

The number of workpieces 26 present in a bundle 478 or 480 can be regulated by means of a counter which sends a current impulse to the device which causes the retraction or advance of the photocell 546 after a predetermined number of workpieces 26 have been deposited on the stacking platform 482 · have been a result of this current surge Stel lung change in the stack is carried photocell array 546 and the counter is reset or deleted · After a pre-determinable

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The number of workpieces has been deposited in a new bundle according to the position of the photo cell 546 the position of the photocell is changed again to the positions shown alternately in FIG To form bundles "

The positions of the stacked photocell array 546 will be changed by the operation of the compressed air cylinder 608 (Fig. 22) «The one provided with a cylindrical housing 610 Compressed air hoses 609 are assigned to cylinders 608. During the intermittent operation of the cylinder 608, a piston rod 612 is either inserted into that shown in FIG moved forward position or the piston rod is withdrawn «With the piston rod 612 is also the photocell 546 advanced or retracted. When the piston rod 612 moves outward, one of them slides End of cross member 602 in track 607, and the other

with
The end of the cross member 602 rolls / the wheel disk 604 on the rail 608 "In this way, alternating bundles 478 and 480 are deposited, which is advantageous for the transport of the workpieces for the purpose of additional treatment in other stations."

The belt 544 moves the workpieces 26 individually back to the trough 542, is interrupted until the emerging from the photocell 546 light beam "The tape 544 (FIG _e 21) is an endless belt to the roller 538 and then to

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1660863

Rollers 614 and 616 run on parallel plates 618 (Figo 20 and 21) are rotatably mounted «

The belt 544 runs around a rear small roller 620 and back around the front small roller 622 and then towards roller 538.

The belt 544 is preferably driven separately, but the movement of the conveyor belts 408 can also be used to drive the belt 544 via a suitable gear mechanism (FIGS. 20 and 21). The movement of the conveyor belts 408 rotates the roller 410 on its axis "D /! erWalze 410 is associated with 624 (FIG _e 21) a first gear, which engages with an intermediate gear 626 (Fig. 21) is meshed with one of the roller 540 associated with the second gear 628 · the movement of the conveyor belts 408 is in this Way used to rotate the roller 540. The rotation of the roller 540 is transmitted to the roller 538 by a suitable gearbox. The roller 538 is thus rotated, and since the belt 544 runs over the roller 538, the entire belt 544 is caused by the rotation of the Roller 538 moves "

The ends 630 of the roller 540 (FIG. 20) are mounted in frame parts 632. The ends of the rollers 616, 618, 620 and 622 are supported in supports 633. The frame parts 632 are fastened with screws to angle pieces 634 and 635, which sit on the machine frame (Figo 20) _{or the like}

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The stacking platform (FIG. 20) rests on a slide 636, which via a link 637 bit of the chain 484 when the workpieces 26 accumulate on the platform 482, the chain 484 slowly descends, The stacking carriage 636 also moves downwards and is guided in the U-iron 638 in the process.

The entire stacking station (Figo 18) is supported by a base 639, which has ground wheels 640, which with Pins 642 are attached to the underframe 639. The station of the plant containing the cutting device 412 is arranged on wheels 644 (Fig. 1A). As can be seen from these arrangements and from Fig. 1A, the new System made up of several stations, including a feed carriage 320, a nearby station carriage 324 and a cutting carriage contain·

As Figure "18C shows, the system can consist of several stations or sectors composed" For example, two different sewing types between the Vorechubstation and the cutting and the stacking station • are total turns "The first sewing machine, a Plieeieraaschine or FaItenlegmaschine eein ₀ The second sewing machine can a buttonhole making or mowing machine, the two sewing machines working together to perform work on the front of a shirt or blouse. There are numerous manufacturing machines

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which can be assembled in an arrangement similar to Pig, 18C to perform multiple operations To execute a workpiece 26, time regulators are used to time the various operations such as feeding, sewing, cutting and stacking with one another abatimmeno

As mentioned earlier, spring loaded levers 328 (Pigβ 1A and 1B) are used to operate various stations, which are to form a system, to be put together or to be coupled. As shown in FIG. 1A, the sewing station carriage a paralyzing machine table 3Ht öler carried by uprights 315 Further, there are beams, for example, rails 335 and beams 648 and 650 in FIG. 1A, which form a part the support arrangement for the gate push station% esteil 652 and form the cutting station frame 654 »

As soon as the stacking platform 482 has picked up a desired number of workpieces 26, the stacking station is preferably moved away and replaced by a new stacking station. The bundles are not removed from the stacking plates removed. In order to ensure that the system does not work when the loaded stacking station 18 has been moved away, but only works when one With the unloaded stacking station 18 in place, the system shown in Figure 18A is used 18A shows, the lower surface 656 is a 4-way cutting station

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646 equipped with magnets 658 that touch iron rails 660 which protrude from the stacking frame 639. A switch 662 with a contact 664 also protrudes from the lower surface 656 and closes when it is placed on the rail 666 of the stacking frame 639 as soon as the stack frame is disposed 639 near the bottom surface 656 in the embodiment illustrated in Figo 18A manner _e Once being driven away a loaded stacking station 18, the contact of the switch 662 moves 664 by spring pressure towards the outside, whereby a circuit is opened, the further continuing work of the System prevented until another unloaded stacking station is set up near the cutting station 646 and switch 662 is closed again »

As already mentioned, the stacking platform 482 is lowered step by step when the workpieces 26 are placed on it Platform 482 shown in Fig. 18B is a panel or plate having a plurality of openings 668 for the passage of allow vertical guide rods 670, which guide the platform 482 in its vertical movement «. The guide rods 670 (FIG. 18) have free upper ends 672 and are attached at their lower ends to the stacking frame 639,

If desired, a scaffold 674 (Fig. 29) can be used to carry additional rollers and various devices that are placed on a workpiece passing through the system 26 · For example, the scaffolding 674 can work on the

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System can be arranged between the sewing station and the cutting station «,

The frame 674 has beams 676 that make up uprights that support cross bars 680 that support cross rails 682 using brackets 684 »The brackets 684 (Figs. 30 and 31) have fork arms 686 that are arcuate in shape Fingers 688 which comprise a portion of the cylindrical surface of the cross bars 680 * die Fork arms 686 end at the top in a web 690 (Pig «30), which receives a clamping screw 692, the threaded shaft 694 penetrated the web 690 and was in contact with a transverse rail 682 received between the fork arms 686

Certain holder 684 (Pig "29) also carry L-shaped brackets 696, the foot 698 on the web 690 rests _o The brackets 696 have upwardly directed arms 700 that are penetrated by upper Quevstangen 702," The upper cross bars 702 carry means upper holder $ 06 upper cross rails 704 in a position which essentially corresponds to the cross bars 680, the cross rails 682 and the holders 684.

The cross rails 682 can be used to support various auxiliary devices used, ζ · Β. of rollers 708, which have parallel arms 710, which on a transverse rod 680 be worn. In arms 710 there is a pad 712

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rotatably mounted «Rings 714 hold the roller 708 on the crossbar 680 · A short rod 716 extends between the arms 710 at a location remote from the disk 712 «, one end of the rod 716 is anchored to a coil spring 718, the other end of which is attached to the upper cross rail »

The frame shown in FIG. 29 thus has different levels and support parts for supporting auxiliary devices.

The machine operates in the following manner: workpieces 26 are placed in a staggered arrangement on the platform 28 (FIG. 5) and the holding fingers 52 are adjusted to maintain the profile of the stack of workpieces. During the successive feeding of the workpieces by means of the feed foot 70, the platform 28 is raised gradually or step by step, so that the top workpiece 26 essentially occupies the same plane.

At the beginning of the feed cycle, the feed foot 70 is fairly close to a workpiece 26 »The feed foot 70 moves downwards and rests against the upper surface of a workpiece 26 with the interposition of an adhesive tape 76. The feed foot 70 then rises and the suction device 82 takes effect to reduce the lifting effect

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stützejrio The feed foot 70 is raised to a maximum height and is then abruptly moved forward in order to deliver the workpiece 26 between the rollers 78 and 80 _e

During the movement cycle of the feed foot 70, a Fresh portion of the adhesive tape by pushing a pin 106 into the opening 108 of the drive housing 84 (Mg »8) set. With this writing of the pin 106, a pawl 118 is in engagement with a Ratchet tooth 120 urged so that an intermittent advance of the adhesive tape 76 between the supply reel 86 and the take-up spool 88 takes place «

The movement of the feed foot 70 through its movement cycle (Pigβ 10A) takes place through the work an oscillating roller 104 and a support roller 74 · The oscillating roller 104 can only perform a rotary movement while the support roller 74 can perform a linear movement and also a rotary movement

The movement of the rollers 74 and 104 is initiated via a compressed air operated crank device 150 (FIG. 2). The crank mechanism 150 has a long back and forth rods 170 through the via the rod 192 a cam disc 198 about the pivot pin 200 is moved back and forth · The Nockensaheibe 198 has an upper convex edge, at which a Nookenacheibennachlilufer rests 206, as

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the contact arm 208 of which the oscillating roller 104 is attached. The contact arm 208 rests against the convex upper edge of the oscillating cam disk 198, and the follower 206 is pressed by a spring into contact with the upper edge of the cam disk 198 Moving direction Since the oscillating roller 104 is attached to the contact arm 208, the swinging of the cam disk 198 by the crank device 150 causes the oscillating movement of the oscillating roller 104. The oscillation of the oscillating roller 104 is converted into an oscillating and linear movement by the coupling 148 and the guide cam plate 210 Converted support roller 74 to which the feed foot 70 is attached _o

The support roller 74 can move linearly, since it is not concentrated in the manner as the swinging roller 104o Since the feed foot 70 moves with the supporting roll 74, the feed foot 70 is moved through its cycle of movement by means of the vibration and linear movement of the support roller 74 and the workpiece 2C is placed on the corrugated transport roller 78.

The actual movement of the support roller 74 is regulated by the hell 214 in conjunction with the guide cam 210 ·

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As a result of the movement of the roller 214 "the entire carrier roll is lifted 74 and lowered and pushed forward and rear" moves up roll 214 on the extending in the horizontal direction short railway line 222 of the cam 210 then floats the roller 214 slightly in the horizontal direction _o

As soon as the feed foot 70 is on the top workpiece lowers so that the adhesive wall 76 touches the uppermost workpiece, the suction device 82 is switched on, namely as soon as the feed foot 70 moves upward from its lowermost position in a predetermined short time hatc This way, the simultaneous capture of Several workpieces 26 avoided. The gripping of several workpieces could occur if the suction device 82 works at the point in time in which the adhesive tape 76 touches the workpiece 26.

The vacuum and suction device 82 is switched off shortly before the workpiece 26 is delivered between the rollers 78 and 80 is so that the resistance to the forward movement of the workpiece 26 by the rollers 78 and 80 is reduced o The vacuum is switched off when a cam disk is pushed by the forward thrust movement of the feed foot is switched mechanically "

If the feed foot 70 is accidentally at the same time

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detects several workpieces 26, a rejection device operates, which consists of a thickness gauge 230 and a reject flap 232, so that the movement such a double layer through the system is prevented «.

As soon as the feed foot 70 has fed a workpiece 26 to the rollers 78 and 70, the workpiece is placed under a Photo cell 248 passed through, which actuates a timer, the working of the feed foot 70 for short adjustable Times prevented "This ensures the correct spacing between the workpieces 26 as they move in the Plant scored

If the feed foot 70 does not pick up a workpiece 26, a control device is switched on, which causes the Feed foot 70 immediately repeats its cycle. If a workpiece 26 is not picked up at a predetermined one Number of repetitions, then another control device is switched on, which switches off the machine «

The workpiece 26 is moved to the sewing station 14 by conveyor belts 256. The workpiece 26 moves over a folding plate 262 * Air jets 288 emerging from a pipe 280 affect the long edge 290 of the workpiece in such a way that Si @ edge 290 over the folding plate

folded and the workpiece is doubled «The folded Workpiece 26 is then placed under hold-down plate 298 out and an additional compressed air pipe 306, which is assigned to this hold-down plate 298, generates an additional Air flow to facilitate the passage of the folded workpiece «

The folded workpiece 26 now arrives at the sewing station 14 and runs under the sewing guide 340 (FIG. 15). Here the workpieces 26 also run under the hold-down device 344 through «

After a predetermined short time following the start of the sewing machine head 316 and the through the interruption of a light beam from the photocell 346 is initiated, the hold-down device is rotated downwards, so that the bath disc 342 of the hold-down device 344 rests against the workpiece 26, which is now advanced under the sewing machine head 316 «

The above-mentioned turning of the low Haiti device takes place 344 by an air cylinder 360 (fig _e 15 and 16) "When operating the cylinder 360, a pin is raised and lowered alternately, which directs the pinger 378 upwardly whereby the support rod is rotated in a certain direction 312 "In this way the hold-down device 344", which is attached to the support rod 312, is rotated,

-67-so that the wheel disc 342 rests on the workpiece 26.

The cylinder 360 only works when the workpiece 26 has been pushed under the sewing machine head 316 _o This is achieved by means of a time delay device which is switched on when the light beam of the photocell 346 is interrupted * The cylinder 360 works with it after a predetermined short time delay the workpiece 26 can slide under the wheel disk 342 before the hold-down device 344, which contains this wheel disk 342, is moved downwards by the operation of the cylinder 360.

The after moving down and berthing of the workpiece 26 hold-down device 344 takes its leaf spring 386, which mimics the finger of an operator and the workpiece through the sewing station passes _o Gewünsentenfalls can also be an auxiliary feeding device (not shown) 26 of the sewing machine head 316 associated sein.Eine Such an auxiliary feed device contains a driven belt which is switched on as soon as the light beam of the photocell 346 is interrupted. However, the auxiliary feed device is only lowered onto the workpiece when the hold-down device 344 has been switched on «

As soon as the photocell 346 is switched on, the The sewing machine clutch is engaged and the sewing machine begins its work »

In many systems, the workpiece coming from the sewing station is processed by a second sewing machine, Z ₀ B ₀ a buttonhole cutting or sewing machine. The sewing work of the first and second sewing machines or other devices that are downstream of the first sewing machine is carried out regulated by the number of stitches executed by the first sewing machine «A counting and regulating device is switched on and is switched off after a predetermined count of stitches, as will be described later«

After the workpiece 26 has left the sewing station 14, the workpiece runs between the driving feed roller 404 (Figo 18) and the counter roller 406 through, so that the workpiece 26 on the transport or conveyor belts 408 of Cutting device 412 is fed «,

The driving feed roller 404 receives its power drive via a gearwheel 426 which is driven by the motor 430. The motor 430 also drives a second belt 438 (FIG. 19) which is connected to a drive link 466 _e 472, 474 and 476, the stacking platform 482 is gradually lowered as soon as the work

ORlGiNAL iMQ? CCTED

10981 5 / niRi »

pieces 26 in alternately directed bundles 478 and 480 be placed on the platform 482 "

As soon as a workpiece 26 has moved under the photocell 346, the light beam is restored » As a result, the cutting device 412 is once over, the entire width of the system above the conveyor belts 408 carried away in the manner shown in FIGS During this movement of the cutting device 412 across the system, the conveyor belts 408 are stopped or stopped, so that the workpiece 26 stops when the cutting device is working «

The motor 488 of the cutting device 412 continuously rotates the circular knife 490. The cutting device 412 is moved back and forth by a chain drive 492 (Fig. 25) which drives a chain 494 to which a carriage 496 carrying the circular knife 490 is attached _o The carriage 496 is reciprocated (25 and 27 Figo) of a pneumatic cylinder 508 and herbewegte the cylinder 508 drives a rack 514 _f the gear 518 one time before moving back and _β the oscillating movement of the gear 518 is then transmitted via other gears to the shaft 526 which drives the chain 492 via the chain wheel 523. A connecting bracket 524 is attached to the chain 492 and is enclosed in a slot in the belt 494, so that in this way the back and forth movement of the chain 492 is directly suspended

-70-the chain 494 is transmitted «

The workpiece 26 is now stacked in the bundle 478 or in the bundle. When moving through the stacking station the workpiece 26 is conveyed from the conveyor belts 408 onto the upper roller 538 and the lower roller 540, so that the Workpiece 26 through the moving belt 544 on the long reciprocating trough 542 deposited down we do

The workpiece 26 approaching the rearmost end of the system passes under a stack photocell 546 « This interrupts the light beam coming from the photocell 546, so that the trough 542 is returned or is moved backwards and the workpiece 26 falls down or is placed on other workpieces 26, the prepared bundles 478 and 480 have been placed on the stacking platform 482 «

When the light beam coming from the photo cell 546 is interrupted, the compressed air cylinder 550 (Pig 21) a surge current passed so that the cylinder 550 works and one time a spring loaded piston 558 and one dem Piston associated rack 560 moved back and forth «This back and forth movement is performed by a chain 570 small gears 578 transmit the bit long racks 588 are in engagement, which on the underside of the tro-

ges 542 are attached along both sides of the trough, so that a back and forth movement of the trough 542 took place

After the cylinder 550 has moved the piston 558 to its furthest position, the cylinder moves the piston further rearβ This backward stroke of piston 558 moves the endless chain 578 in the opposite direction so that the trough 542 is pushed backwards into its fully advanced position Is brought into position in which another workpiece 26 can be placed on the trough »

As the trough 542 moves back to its rearward position, a pusher 582 is pressed onto the bundles 478 and 480, to press the bundles onto platform 482 and produce more compact bundles »

The pusher 582 (Pig «21) is suspended from the trough 542 with relatively long rods 584« Trough 542, the trough moves quite a long way forward and takes the pusher 582 with it * The rods 584 come here in contact with a lift rail 598 which extends immediately below the tracks 548 across the width of the facility extends. The rods 584 are thus raised upwards so that they are between the trough 542 and the lifting rail 598 (Fig. 24) lying «If the trough 542 moves back into the position shown in Pig« 21 in full lines, then the rods 584 slide off the lift rail

1Ο98ΐ5 / Π3Ρί »

off and the pusher 582 drops with pressure on the bundles 478 and 480 of workpieces 26 that are stacked on the platform 482 are"

The photocell 546 is continuously either in the position shown in dot-dash Lini ^ nin Figo 21 advanced position or in the position shown in solid lines in Figure 21 retracted position _o ,,

The photocell 546 will from time to time be moved from its advanced position to its retracted position, ■ whereby the alternating bundles 478 and 480 are formed on the platform 482,

When the photocell 546 is in the retracted position shown in full lines in Figure 21, the light beam is interrupted at a location slightly away from the distal end of the trough 542 so that the bundle 478 is stacked for so long photocell 546 is in its retracted position. When the photocell 546 is moved to its advanced position, shown in broken lines in Pig »21, which is near the end of the trough 542, the bundle 480 is stacked.

The alternate bundles 478 and 480 are thus in accordance with the retraction or advancement of the

109815/0383

Cell 546 stacked The number of workpieces present in a particular bundle 478 or 480 and the number of bundles 478 and 480 can be controlled using various counters has been applied, a rush current ^ to the device which advances or retracts the photocell 546 to change the position of the photocell 546 ". At the same time the counter is cleared, so that after a predetermined number of workpieces has been stored in a new bundle according to the new position of the photocell 546, the position of the photocell 546 is changed again _{9 in} order to stack the alternating bundles shown in FIG.

The position of the photocell 546 is changed by the cylinder 608 (Fig. 22) «, The intermittent operation of the Cylinder 608 adjusts rod 612 to an advanced or retracted position so that the photocell 546 is also set advanced or retracted «In the movement caused by the cylinder 608 Outwardly of the rod 612, one end of the cross member 602, which supports the photocell 546, slides in the track 607, while the other end of the cross member 602 with the interposition of the wheel disk 604 on the rail 606 slides *

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The work on a workpiece to be sewn is therefore carried out completely automatically «, Die Pig, 32, 33 and 34 show circuit diagrams of the control circuits that make up the various Components are assigned.

The circuit that controls the operation of the feed foot 70 is the current shown in Pig 32 is fed to the circuits of Pig 32 via the current sources shown in this Figure 32. The circuit leading to the normally closed contact is with an alternating current source connected by 110 V "if the associated the circuit, in the righthand portion of the switch located Pig.32 is closed _o

Usually the two upper microswitches shown in Pig · 32 are open, so that the current is only passed through the normally closed contact r to the normally closed contact r. . and then flow to solenoid S ₂ which drives the compressed air operated crank device 150 in a clockwise direction. This rotates the mechanically coupled cam disks 159 * in the clockwise direction.Although there is also a circuit to R, i.e. to the relay for the feed foot photocell 248, the current flowing in this circuit is usually very small for so long until the light beam belonging to the photo cell 243 is interrupted, whereupon a large current flows into the

1ÖQÖU / 0383

Circuit flows and the normally open contact 4th

τ _Λ closes ο

If current flows through the solenoid Sp »then the two cam disks 159 * are rotated in the clockwise direction so that the feed foot 70 approaches almost to the lowest point of its movement cycle and the adhesive tape 76 touches the uppermost workpiece 26 which has been removed from the platform 28 If the cam disks 159 * continue to rotate in the clockwise direction, the feed foot 70 rises to its highest position and then pushes forwards to transfer the workpiece 26 to the rollers 78 and 80 © At this point the cam disks 159 are ^{1 moved} by a complete half turn from the position shown in Fig. 32, so that its tips are now directed not upwards, as shown in Pig, 32, but downwards.

Begins the right-hand cam disk 159 * of the Figo its rotation in the clockwise direction, then a roller resting on the cam disk 159 * is released and rotates counterclockwise under spring load, so that as a result the upper right microswitch in Fig. 32 is closed. The rotates Cam disk 159 * by a full 180 ° so that its tip points downwards, then the lower roller is touched so that the lower microswitch is closed «,

109816/0363

There is now a circuit to relay R-, which regulates the operation of the compressed air operated crank device 150 «This closes the _{normally open contact r ..« and this contact is locked in the closed position. Switching on relay R 1 closes the} usually open contact and opens the usually closed contact of the contact pair r «.. _o As soon as this is the pail, the current no longer flows to the solenoid Spι but to the solenoid S ,. so that the operation of the compressed air operated crank device 150 is reversed «

The two cam plates 159 'now begin its rotation in the counterclockwise direction until it reaches the upwardly facing position of Figure 32 _e ". At the beginning of the counterclockwise rotation of the cam disk 159 *, the lower microswitch is opened, but current continues to be supplied to the relay R ₁ because the contact r ^ _ _{2 is} ^locked Fig *, the upper microswitch is opened. This opens the circuit to the relay R- and the state of the contact pair T _{1-1 is changed} back to the state shown in Fig. 32 «

Thus, current is supplied to the solenoid S ₂ , but not to the solenoid S ₁ . The pair of cams rotates

109016/0383

159 'counterclockwise, the Feed foot 70 is withdrawn and then moved down to a position immediately above the next workpiece 26 is located on the platform 28 o

If no other circuit were assigned to the feed foot 70, then the feed foot 70 would constantly have workpieces 26 the sewing station *, but the feed foot 70 can move move so fast that it is desirable to take a break after its cycle., The photocell is for this purpose 248 existing

It is recalled that moves the workpiece 26 on the reject gate 232 and then _β under the photocell 248 at this point is interrupted, the light beam of the photocell 248 and flows a relatively large current in the electric circuit of the photocell Verstsfirker relay ¹ R. "This the normally open contact r, is closed and the timing device T is switched on «

It should be noted here that the compressed air operated crank device 150, which drives the feed foot 70, operates as long as the relay R is switched off, since the normally closed contact r * carries current to both solenoids S ₁ or S _2. Stroa is also used in the vacuum

Time delay relay Rg supplied, which _{closes the normally open contact r 2} , which introduces the vacuum effect after the feed foot 70 has worked for a short time, so that there is the certainty that the feed foot 70 now begins its lifting work and the vacuum not several Workpieces 26 are detected, which are pulled against the adhesive tape 76 ",

The circuit on the left in Fig. 32 shows what is happening when the timer T is switched on by interrupting the light beam associated with the photocell 248 and what happens if no workpiece 26 is fed and therefore the light beam from photoelectric cell 248 is not is interrupted.

In the latter case, the circuit of FIG an almost immediate working of the feed foot 70 and switches off any pause. "This is particularly desirable when if no workpiece is picked up, as there is then no reason for a break «

The two squat disks 159 * rotate together, so that when the squat disks 159 * return to their position shown in Fig. 32, the left cam disk touches a roller that closes a left microscope holder in the figure o The pulse generator of the left circuit is already charged beforehand - been, and when closing the left

10Qft1S / 03Ö3

Microswitch, the pulse generator sends its charge via the main _{control relay R ~ e.} As you can remember, the crank device 150 works as long as the relay R ^ is switched off. when the main relay R ^ is switched off again «,

When the pulse generator is discharged after the left microswitch is closed, the relay R, is briefly energized and closes the normally open contact r, _ .. «, This creates a circuit across the normally closed contact t ^, the now closed contact r ~ .. and the usually closed contact r, - ₂ · Eer mentioned circuit also leads to the main relay R ~ _v so that in this way the main relay R, is kept switched on for at least as long as the usually closed contact Γη_ ₂ remains in the usually closed position »

As soon as the main relay R ^ is switched on, the Feed foot 70 no longer, for the reasons already mentioned, when the main relay R is switched on the usually open contact r, “closed and es becomes a circuit via the fast acting time delay relay R ^ established «After a previous

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"a certain time, which is less than three seconds, the contact rj- _{2 is} opened and the contact i" c_-i is closed «

The further work depends on whether a workpiece 26 has interrupted the light beam of the photocell 248 _o If the light beam has been interrupted, then the normally open contact τ becomes. closed and the timer T works «, This closes the normally open contact tp. Since the main relay R, ^ is now switched on, the contact r, .. is closed and current can still be supplied to the main relay IU via the normally closed contact t .., the now closed contact r, .. and the now closed contact t _{2 are} fed _o

This circuit remains closed, even if the time delay relay R ₁ - is switched on and the normally closed contact r, - ρ has closed »The main relay R remains switched on until the time controller T has passed its time delay period«

At the end of the time delay period, the normally closed contact t ^ opens, causing the circuit to the main relay R, is opened. The main relay R,

100016/0383

1660863

is therefore switched off and the contact r ^ is closed so that the crank device 150 can begin its operation, since current is supplied to the solenoid S .. or the solenoid S ₂ in the manner already described «,

If no workpiece 26 has been picked up by the feed foot 70, then the light beam is also from the photocell 248 not interrupted, so that an immediate operation of the feed foot 70 in the manner described below took place

As soon as the cam discs 159 ^t in their have been turned back upward position of the Pig "32, the left microswitch is closed, so that the pulse generator via the relay R discharged · There is, as mentioned, then an electric circuit through the relay R ,, which contains the usually closed contact t *, via the now closed contact ? ■ ** and the usually closed contact r ^ ₂ «When switching on relay R, the crank device 150 stops working _o

When switching of relay R, and the r usually open contact * ₂ is closed and power to the timer relay Rc supplied When the contacts of Relais.R _e are switched after a predetermined short time, the normally closed contact r _c _ ₂ opened·

109816/0383

Since the timer T has not worked because no Y / piece 26 has been supplied, the combination of the normally open contact t ₂ and the now open contact r ^ «^ as the main relay R, is switched off _o This deactivates the contact r- , closed and the feed foot 70 works almost immediately

So either the timer T works to get the effect of time delay relay Rc to be canceled and the relay R, to keep switched on, or the time delay relay works of the feed foot 70 to initiate ©

The circuit (Pig 33) assigned to the sewing station contains a switch, the closing of which feeds current to the relay R ₁ , which in reality contains the photocell 346. If a workpiece 26 interrupts the luminous flux of the photocell 346, the relay R _{1 is} switched on, thereby the open normally closed contact r.j_.j "As a result, current flows to the Nähmaschinenkupplungssolenoid S ₁ to and the operation of the first sewing machine starts · current is also supplied to a Verzögerungset ronkr ice, which after a predetermined time sequence, the hold-down device 344 via the solenoid S, switches on α Current is also fed to the motor for driving the rear conveyor belts, so that the workpiece 26 now located below the photocell 346 is moved to the cutting device 412

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16608B9

to an invoice counter C ^ which gives a list of the work carried out for payment purposes «,

The interruption of the light beam belonging to the photocell 346 closes a normally open contact T ₁ ~ (! "Ig« 33) »so that current is fed to a stitch counter producing a predetermined number of stitches switched off for example, the Stichzählwerk are set to values of 30 and 40, d _o h _o, after the production of 30 passes, a second operation is initiated and ten stitches later, the second process is stopped set the second operation can be within the first sewing machine and consists, for example, of gathering or pleating, or can be carried out by the second sewing machine in order to make a buttonhole or sew on a button ", the second sewing machine being connected downstream of the first sewing machine ·

33 also shows a setting device C _2, the setting of which has the effect that the working process is not repeated at all (setting no _e 1) or that the working process is repeated once (setting no "2) or that the working process is repeated twice ( Setting no <, 3) · Is the setting device C ₂ open

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16608S9

Operation number set ₀ 3 and the stitch counter at 30 and 40 is set, then the second sewing machine operates in the thirtieth down, is switched off when the fortieth stitch, is switched on when seventieth stitch, is turned off at the eightieth stitch, is switched on when one hundred tenth stitch, and finally switched off at the one hundred and twentieth stitch »The setting device Cp can also be designed so that more than two repetitions take place«

The small current diagram in the lower left corner of Fig. 33 shows a circuit that is supplied by a 12 V AC power source "When the light beam belonging to photocell 346 is interrupted - as already mentioned - the relay R ^ is switched on" the normally closed contact r., ₂ opened »If the light beam belonging to the photocell 346 is no longer interrupted, the relay R .. is switched off and the contact T _- . ₂ is closed ", the pulse generator then discharges its charge via the solenoid S. of the cutting device, so that the cutting device 412 moves across a workpiece 26"

In the meantime, the relay R is turned on by the operation of the adjustment device G _"2, so that the contact r ₂ closed and power to the solenoid S ₂ of the second sewing machine, for _e B" of a buttonhole darning sewing machine, a

109815/0383

Button sewing machine or a shirring or pleating machine ", This current also drives the circular knife of the cutting device 412", The cutting device 412 only advances when the relay R _{1 is} switched off and the contact r, _{2 is} closed

The circuit belonging to the stacking device is shown in Mg «34, in which the stacked photo cell arrangement 546 is represented by the relay R _1. When the light beam belonging to the photo cell arrangement 546 is interrupted, the relay R _{1 is} switched on and the contact r ..« is closed to to switch on the solenoid S .., which initiates the operation of the compressed air cylinder 550, which drives the trough 542 »

When relay R ₁ is switched on, the contact rp is also closed in order to withdraw or advance the photocell arrangement 546 from time to time and to generate the alternately arranged bundles 478 and 480 _{or the like}

On the right- hand side of the circuit shown in FIG. 34 there is a stack counter and a bundle counter . Each time the trough 542 is moved back and forth, a pulse of current is sent to the stack counter. As soon as a predetermined number of power surges has been sent to the stack counter, which corresponds to the number of workpieces 26 desired in the stack, the stack counter ends with power surges

160015/0383

the bundle counter and also to the control device C for shifting the bundles «,

The bundle counter is set so that a predetermined number of bundles are stacked on the stacking platform 482 whereupon the system is switched off automatically * '

With each current surge for the bundle shift control C, the bundle shift 's solenoid Sp is switched on to the Actuate air cylinder 608 so that the stacked photocell assembly 546 is either advanced or withdrawn to the alternating bundles 478 and To generate "Fig." 34 also shows a microswitch 662 located in the circuit of the bundle counter, the the work of the system is interrupted when a stacking station loaded with alternately lying bundles 478 and 480 is driven away and no new stacking station has yet been brought in "

Different types of workpieces can be used, e.g. Sleeves and shoulder pieces, bits of the system according to the invention can be sewn. Various safety devices known per se can also be built into the circuits. For the sake of simplicity , a manual control of the work of the various elements of the system can also take place «

Numerous changes and modifications can be made without departing from the scope of the invention and the claims «10Ö815 / 03Ö3

Claims (1)

Claims 1o Automatically working system for carrying out sewing work on fabric workpieces with an automatically working feed device, which is a reciprocating and pushing feed foot device has and the fabric workpieces automatically and advances intermittently in a predetermined sequence; with one available in the feed foot device Conveyor with an adhesive tape, and with a device that the adhesive tape after each stroke of the feed device advances in a predetermined manner, the fabric piece by the reciprocating and feed foot forward pushing device in one stroke is advanced, characterized in that the feed foot device (22) is assigned a vacuum device (82). 2β system according to claim 1, characterized in that the feed foot device (22) executes a cycle of movement, the stages of which consist of a lowering, in which the fabric piece (26) is touched, from a lifting and forward pushing, in which the fabric piece (26) transport rollers (78,80) is supplied, and from a return and lowering to the next fabric piece (26), whereby the cycle is ended «, 109815/0383 3o system according to claim 2, characterized in that the vacuum device (82) on the fabric workpiece (26) acts after a predetermined short time interval has elapsed after the feed foot device (22) has been raised is" 4 * system according to claim 1, characterized in that stacking a plurality of fabric workpieces (26) in a stack on a platform (28); that the platform (28) is raised gradually or gradually as the fabric workpieces (26) are advanced by the feeding device (22) be to hold the top workpiece (26) substantially at the same height, and that holding finger (52) hold the stack and prevent the advance of more than one piece of fabric (26) " 5ο system according to claim 1, characterized in that the feed foot (70) is driven by an oscillating roller (104) and by a support roller (74), the feed foot (70) is mounted on the support roller (74); that the oscillating roller (104) is operated by a crank device operated by compressed air (150) is driven, and that the support roller (74) with the oscillating roller (104) for the execution of an oscillating and linear motion is coupled " 6 _O system according to claim 5 »characterized by a first cam disk (198) which is driven by the crank device 109815/038? 1660863 (15O) is set in visual oscillations, the Oscillating movement of the first cam disk (198) generates an oscillating movement of the oscillating roller (104) while the oscillating and linear movement of the support roller (74) is guided by a second cam disk (210) «, 7 «Plant according to claim 1, characterized in that the switching off of the vacuum device (82) on mechanical Paths in the forward feed movement of the feed foot (70) took place δ, Appendix after. Claim 1, characterized by a rejection device (23O ₉ 232) which prevents the simultaneous movement of double-lying workpieces (26) through the system « 9e plant according to claim 1, characterized by a time delay device which prevents operation of the feed foot (70) for a short, variable time when the feed foot (70) is a material workpiece (26) a feed photocell array (248) has supplied. to "Installation according to claim 9 _t characterized by a device that causes the feed foot (70) repeats its cycle once, when the feed foot (70) no substance workpiece (26) of the Vorsohubphotozellenanordnung (248) has fed, and that means the Feed foot (70) turns off when the feed foot (70) at a predetermined consecutive number of jobs has not caught a piece of fabric (26) " 11o system according to claim 1, characterized by a Sewing station (14), a Sehneidstation and a stacking station, of which the sewing station (14) a sewing machine and Includes means for turning on the sewing machine when feeding pieces of fabric (26); also a Having device which the cutting device (412) during the movement of the fabric workpieces (26) through the sewing station (14) turns on through, and has a device that the stacking device when moving the Switches fabric workpieces (26) on beyond the cutting device (412) « 12o system according to claim 11, characterized by air jet devices (280, 286), which a section of a previously fed fabric workpiece (26) over a folding plate Fold (262) when conveyor belts (256) lead this fabric workpiece (26) to the sewing station (14). 13 »System according to claim 11, characterized by one of the Photocell arrangement (346) belonging to the sewing machine, which the Initiate work of the sewing machine when a fabric workpiece (26) passes through a hold-down device (344) »after a * predetermined period of time has elapsed 10Ö815 / Q383 the fabric workpiece (26) applies, and by a device (360) that this hold-down device (344) loading. made 14o system according to claim 11, characterized by a second sewing machine that is in series with the first sewing machine and is downstream of the first sewing machine » 15ο system according to claim 11, characterized by a Device that after response of the photocell arrangement a conveyor belt is switched on, and by a device that, after a piece of fabric has passed through, the conveyor belt switches off, this last-mentioned device also switching on a cutting device (412) which is once reciprocated to trim the fabric workpiece (26) and which has a circular knife (490) that is constantly rotating «, 16o system according to claim 11, characterized in that the fabric workpiece (26) moved back and forth from a cutting device (412) via a conveyor belt (544) to a long one Trough (542) is promoted; that a stack photo cell arrangement (546) the trough (542) back and forth once moved to place a fabric workpiece (26) on the stacking platform (482); that a device (470, 472, 474, 476) this platform (482) when placing the fabric workpieces (26) gradually lowers to reach the top fabric 109815/0383 piece (26) to hold at a substantially the same height ο 17o system according to claim 16, characterized by a device (608) which the stacked photocell arrangement (546) in a predetermined controllable cycle between an advanced position and a retracted position moved to and fro to form alternating bundles of fabric workpieces 18o System according to claim 16, characterized by a pusher (582) which is pressed onto the fabric workpieces (26) lying on the stacking platform (482) _{or the like} 19e system according to claim 11, characterized by a the stitch counter assigned to the sewing station (14), which counts a work process after a predetermined first number of Initiates stitches and interrupts this process after a predetermined number of second stitches, and by an adjusting device that this operation according to the first predetermined number of stitches and repeats the second predetermined number of stitches, the number of times of repetition being predetermined can· 109815/0383