Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F65/00—Ironing machines with rollers rotating against curved surfaces
  • D06F65/02—Ironing machines with rollers rotating against curved surfaces with one roller only
  • D06F65/06—Ironing machines with rollers rotating against curved surfaces with one roller only the bed being urged against the roller by power

Definitions

• Ironing machine with a switching device for the drives of an ironing roller and a bow trough that can be moved against it
• the invention relates to an ironing machine according to the preamble of patent claim 1.
• Such an ironing machine is known in which the control of the two drives takes place by pivoting the actuating member for the switching device to different degrees.
• the reversal range between the mere pressing of the ironing body against the ironing roller and the pressing with simultaneous rotation of the ironing roller is so small that operating errors often occur.
• the operation of this ironing machine therefore requires a great deal of skill on the part of the operator, at least a considerable training period is necessary.
• the switching device is not suitable for operating the ironing roller in different directions.
• the invention has for its object to provide a switching device for an ironing machine so that the operation of the ironing machine is simplified while expanding its executable functions.
• Switching device with precisely defined switching positions for actuating the various ironing functions, namely pressing, forward and backward ironing.
• Claim 4 specifies a simple constructive solution for designing the rocker switch provided for controlling the ironing machine, claims 5 to 8 containing further details for accommodating and actuating the switches provided for different ironing operations in the rocker switch.
• the circuit of the ironing machine according to claim 10 has the advantage that the entire functions can be realized with only a few switching elements, the lifting motor not only being switched off in its two end positions, but also being electrically braked.
• Fig. 2 is a simplified front view of the pressure gear
• Fig. 3 with the lowered bow body, Fig. 3 received in a swing housing, designed as a reversing motor with the planetary gear for the
• Fig. 4 is an end view of the crank gear, the drag cam and the swing housing on an enlarged scale
• Fig. 5 is an electrical circuit diagram
• Fig. 6 is a side view of the rocker switch in section
• Fig. 7 is a section along the line VII- VII of FIG. 6.
• the ironing machine has a base 1 with four rubber feet 2 on the underside, in which a support body 3 is pivotally mounted.
• One longitudinally corrugated end of a multi-curved support tube 9 for the ironing roller 10 is inserted into a bore in the support body 3 and clamped therein.
• the ironing roller 10 consists of a sheet metal jacket 15 with a hose-like, elastic roller covering 16.
• the drive device for the ironing roller 10 is designated 26. It has a gear sleeve 27 and is pushed onto the free end of the support tube 9.
• a reversible low-voltage direct current permanent magnet motor is provided as the drive motor 34 for the ironing roller 10. It is held in the gear sleeve 27 by support ribs 35.
• the output end of the shaft of the drive motor 34 is designed as a pinion 36 which drives a planetary gear P which is only indicated schematically.
• the planet gears forming the output of the planetary gear P are each mounted on a bearing pin 49 which acts as a driver and which engages in bores in a drive flange 51 for the ironing roller 10.
• the drive flange 51 is inserted into the free end of the ironing roller 10 and connected to it in terms of drive.
• the support body 3 has a horizontal transverse rib 69 in the upper region.
• two bearing webs 70 are provided, on which the ends of first links 73 of the pressure gearing for the bow trough 77 are mounted, the other ends of which are articulated by means of bolts 74 to the lower end of a support bracket 76 for the bow trough 77.
• Support body 3 is mounted by means of bolts 82 which are arranged in a vertical plane with the bolts 72, which one longitudinal side of a torsionally rigid profile body 84 belonging to the pressing mechanism for the bow trough 77 is mounted and is articulated on the other longitudinal side by means of bolts 85 to the support bracket 76.
• the bow trough 77 equipped with a heating element 92 is screwed on the underside.
• the lifting motor 93 of the pressure gearing for the bow trough 77 is designed as a low-voltage direct current which can be switched in the direction of rotation - by anentmagnetmoto.r and is arranged in a vibrating housing 94, FIG. 2, and fastened with screws 95.
• the output shaft end of the lifting motor 93 is designed as a pinion 96.
• a planet cage 97 In a planet cage 97, three planet gears 101 consisting of two integrally formed planet gear halves 99, 100 are supported on bearing axles 98.
• the planet gear halves 99 have one tooth more than the planet gear halves 100.
• the pinion 96 is in meshing engagement with the planet gear halves 99, which engage with an internal toothing 102 in the oscillating housing 94.
• the planet gear halves 100 are in meshing engagement with an internal toothing 103 of a crank gear 104.
• the internal toothing 102 of the oscillating housing 94 is one tooth larger than the number of teeth of the internal toothing 103 of the crank gear 104.
• the crank gear 104 is designed as a ball bearing outer ring and is injected with the balls 104 a into the end of the oscillating housing 94 which is designed as a ball bearing inner ring.
• the end face of the crank gear 104 has a crank pin 105, on which a lifting roller 106 is rotatably arranged, which engages in a guide slot 107a in an insert 107, which engages in a slot 108, FIG. 4, open on one side in the side wall of the support bracket 76 .
• two cams 109, 110 are arranged which are offset at a certain angle to one another and which serve to adjust a slotted drag ring 112 which can be rotated in a ring groove 111 of the oscillating housing 94 with a certain friction and which slides into the movement path of the cams 109, 110 projecting switching cams 113 for actuating the switching arm 114 of a microswitch 115, which is attached to a web 116 of the vibrating housing 94.
• the switching arm 114 is under the action of a return spring 114a.
• the cam 110 also serves to actuate the switching arm 117 of a further microswitch 118, which is also fastened to the web 116.
• the switching arm 117 is under the action of a return spring 117a.
• the arc length of the switching cam 113 is greater than the arc length by which the button 119 of the cam 110 compared to that through the center of the crank pin 115 and
• Crank gear 104 extending center line 120 is offset, as shown in Fig. 4. 4 also shows that the button 121 of the cam 109 lies on the center line 120 in the position shown.
• a double flange 122 with a lateral cylindrical pin 123 and a flange 124 with a lateral cylindrical pin 125 are formed on the oscillating housing 94.
• a slot 126 open on one side is provided for inserting a torsion bar spring 127, FIG. 2.
• the torsion bar spring 127 is bent in a U-shape.
• the oscillating housing 94 with the cylindrical pins 123, 125 is inserted into a bore in the bearing eyes 128, which on the front wall of the Support body 3 are provided and each have a slot for the passage of the torsion bar 127.
• One leg, not shown, of the torsion bar spring 127 is inserted into a slot in the oscillating housing 94 on the end face remote from the crank gear 104.
• the other leg 134 of the torsion bar 127 is supported in a semicircular groove 135 of a support lever 138, which consists of the parts 136 and 137 screwed together and is mounted in the side wall of the support body 3.
• the cover 139 of the support body 3, which is only partially shown, is screwed onto the support bracket 76 by means of screws 140.
• the cover 139 is formed on both sides of the bow trough 77 as a feed table 141, 142.
• a switching rocker 169 for actuating three switches 170, 171, 172 is provided for controlling the drive devices of the ironing machine.
• An electric cable 173 leads from the rocker switch 169 to the motors 34 and 93 and the microswitches 115, 118 in a manner not shown in detail.
• a transformer 176 is connected via a main switch 174, to which a rectifier 177 is connected, at the terminals 175 and 180 of which a rectified low-voltage current can be drawn off.
• a line 178 leads from the terminal 175 of the rectifier 177 to the normally open contacts 172b, 170b and 171b of the switches 172, 170 and 171 and to the normally open contact 115b of the switch 115.
• a line 178a leads from the terminal 180 of the rectifier 177 to the normally closed contact 115a of the switch 115 and via a diode 181 to the normally closed contacts 170a and 171a of the switches 170 and 171.
• the diode 181 is connected in such a way that a current flow from the terminal 180 of the rectifier 177 to the switches 170 and 171 is prevented.
• the line 178a leads via a diode 182 to the normally closed contact 172a of the switch 172. The diode also blocks a current flow from the terminal 180 of the rectifier 177 to the switch 172.
• the lifting motor 93 is connected on the one hand to the switching arm of the switch 115 and on the other hand via a line 179 to the switching arm of the switch 170.
• the drive motor 34 is connected on the one hand to the switching arm of the switch 171 and on the other hand to the switching arm of the switch 118, the normally open contact 118b of which is connected to the switching arm of the switch 172.
• the rocker switch 169 FIGS. 6 and 7, consists of a lower housing 190 which is connected to a switching element 191, in which a trough-shaped recess 192 for the foot of the operator is contained.
• the upper housing 191 is guided by a guide pin 193 in a guide 194 in the lower housing 190. It is connected to the lower housing 190 by four screws 195 fastened in its corner regions.
• the screws 195 are screwed through a bore 196a of an upper wall 196 of the lower housing 190 into a fastening bolt 197 in the switching element 191 in such a way that their heads 195a rest against the upper wall 196 under the pressure of a spring 198.
• the space between the heads 195a of the screws 195 and the fastening bolt 197 is so large that the switching element 191 can perform a limited downward switching movement.
• the spring 198 is guided on two pins 199, 200 which are arranged in the middle part of the lower part 190 and switching element 191. It presses the switching element 191 upwards until the heads 195a of the screws 195 rest against the wall 196.
• the switching element 191 has, in its axis of symmetry, a stop 201 in the front part, which rests on the upper wall 196 when the switching element 191 is pressed down.
• a rib is arranged behind the guide mandrel 193 and forms a stop 202, which can also rest on the wall 196.
• the two stops 201 and 202 form a pivot axis about which the switching element 191 laterally until a stop 203 or 204 is supported on each corresponding pivot stop 205 or 206 provided on the lower part 190 can pivot.
• the three switches 170, 171 and 172 are fastened in the lower housing 190 and for their actuation the switching element 191 contains three switching ribs 207, 208 and 209, one of which is assigned to a corresponding switch 170, 171 and 172.
• the device works as follows: In the lowered position of the bow trough 77 according to FIG. 2, after the main switch 174 (see also FIG. 5) has been switched on, the lifting motor 93 of the contact drive for the bow trough 77 and the motor 34 of the gear 26 for the bow roller 10 by actuating the rocker switch 169 against the action of a return spring by the operator. There are four options:
• the switching element 191 of the rocker switch 169 is only depressed in the middle, only the switch 170 is switched from the contact 170a to the contact 170b.
• the lifting motor 93 FIGS. 3 and 4 drives the double planet gears 101 via the pinion 96, the planet gear halves 99 of which roll on the internal toothing 102 of the oscillating housing 94 and the planet gear halves 100 with the internal toothing 103 of the
• crank gear 104 Interacting crank gear 104, the crank gear 104 with the crank pin 105 and the lifting roller 106 in the direction of the arrow Re, so that they are rotated from their low position indicated by dash-dotted lines in FIG. 2 by 180 ° to their high position.
• the support bracket 76 with the bow trough 77 attached to it is raised towards the bow roller 10 by the lifting roller 106 which engages in the guide slot 107a of the insert 107 and is mounted on the crank pin 105.
• the bow trough 77 comes into contact with the ironing roller 10 when the lifting roller 106 mounted on the crank pin 105 is still at a certain angular distance before reaching its high position.
• the rocker housing 94 which up to this point has its flanges 122, 124 on the web 69 of the support body 3, is pivoted downward about the cylindrical pin 123, 125 via the lifting roller 106 engaging in the guide slot 107a, the torsion bar spring 127 excited and in this way the contact pressure between the bow trough 77 and the ironing roller 10 is generated.
• the cam 110 formed on the crank gear 104 switches the switch 118 from the contact 118a to its contact 118b.
• the cam 110 abuts and shifts the switching cam 113 of the drag ring 112, so that the switch 115 is switched from its contact 115a to the contact 115b.
• the lifting motor 93 is short-circuited via the contact 170b of the switch 170 and the contact 115b of the switch 115, as a result of which the lifting motor 93 brakes strongly and the latter is stopped immediately.
• the pressing process without roller rotation is ended by releasing the switching element 191, which acts under the spring 198, the switch 170 being switched over from its contact 170b to the contact 170a.
• the lifting motor 93 drives the crank gear 104 in the direction of the arrow Li, FIG. 2, until the cam 109 abuts the switching cam 113 of the drag ring 112 and takes it along, the switching arm 114 of the switch 115 being released, which is again on its Contact 115a switches.
• the lifting motor 93 is thereby short-circuited via the contact 115a of the switch 115 and via the contact 170a of the switch 170 and is therefore braked and stopped.
• the crank gear 104 remains in the low position with the lifting roller 106.
• This first actuation option of the rocker switch 169 serves to press the bow trough 77 against the ironing roller 10 and does not cause any rotation of the ironing roller 10.
• the pressing process and the lowering of the bow trough 77 can be repeated any number of times.
• the ironing roller 10 is driven in the direction of the arrow “V” or “R”, FIG. 2, after the pressing of the bow recess 77. This is done by depressing the switching element 191 (FIGS. 6 and 7) until the two stops 201 and 202 stop on the wall 196 and simultaneously tilting the switching element 191 about the pivot axis determined by the stops to the left or right by the operator. Depending on the tilt position, switches 170 and 171 or 170 and 172 are actuated. In any case, the switch 170 is switched from its contact 170a to the contact 170b in these two switching positions.
• both switches 170 and 172 are switched to contacts 170b and 172b, respectively.
• the pressing of the bow trough 77 onto the ironing roller 10 then takes place in the manner described above by driving the crank gear 104 with the lifting roller 106 mounted on the crank pin 105 via the lifting motor 93 from its low position, FIG. 2, to the high position.
• the two switches 115 and 118 are switched over to their contacts 115b and 118b, as already described, as a result of which the lifting motor 93 is braked and stopped.
• the ironing roller 10 is now driven by the pinion 36 of the motor 34, FIG. 1, via the planetary gear P and the bearing bolts 49 engaging in the drive flange 51 which is firmly connected to the ironing roller 10 in the direction of the arrow V, FIG. 2, until the Operator releases the spring-loaded rocker switch 169 so that the switches 170 and 172 switch to their contacts 170a and 172a, respectively.
• the lifting motor 93 is, as described above, for lowering the bow recess 77 to rotate the crank gear 104 in the direction of the arrow Li, Fig. 2, turned on, the cam 110 releases the switching arm 117 of the switch 118, so that the switch 118 on the Contact 118a is switched and the roller drive motor 34 is switched off.
• the lifting motor 93 is driven until the switching cam 109 of the crank gear 104 abuts the switching cam 113 of the drag ring 112 and pivots it until the switching arm 114 of the switch 115 is released, thereby switching over to its contact 115a and the lifting motor 93 being braked.
• the drive of the ironing roller 10 in the direction of the arrow R, Fig. 2, after pressing the bow trough 77 takes place in an analogous manner by depressing the switching element 191 and tilting to the left to switch the switches 170 and 171 from the contacts 170a and 171a to the Contacts 170b or 171b.
• the lifting motor 93 is driven in the manner described above and short-circuited in the pressing position of the bow trough 77 to the ironing roller 10, since in the final phase of the rotary movement of the

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=6401054

Family Applications (1)

Country Status (4)

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• 1990
  • 1990-02-27 DE DE19904006133 patent/DE4006133C1/de not_active Expired - Lifetime
  • 1990-11-12 EP EP19900916481 patent/EP0517699A1/de not_active Withdrawn
  • 1990-11-12 AU AU67140/90A patent/AU6714090A/en not_active Abandoned
  • 1990-11-12 WO PCT/EP1990/001888 patent/WO1991013202A1/de not_active Application Discontinuation

Non-Patent Citations (1)

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