EP0110591B1 - Machine à coller à chaud et à rabattre - Google Patents

Machine à coller à chaud et à rabattre Download PDF

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Publication number
EP0110591B1
EP0110591B1 EP19830306752 EP83306752A EP0110591B1 EP 0110591 B1 EP0110591 B1 EP 0110591B1 EP 19830306752 EP19830306752 EP 19830306752 EP 83306752 A EP83306752 A EP 83306752A EP 0110591 B1 EP0110591 B1 EP 0110591B1
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EP
European Patent Office
Prior art keywords
workpiece
drive shaft
cpu
supplied
main drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19830306752
Other languages
German (de)
English (en)
Other versions
EP0110591A1 (fr
Inventor
Graham John Mansfield
Ewen Rothnie Cameron
Joseph Arnold Shutt
Dennis Sidney Hall
Robert Yardley
Andrew Gordon Neil Walter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CESSIONE;BUSM CO. LIMITED
Original Assignee
British United Shoe Machinery Ltd
USM Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Application filed by British United Shoe Machinery Ltd, USM Corp filed Critical British United Shoe Machinery Ltd
Publication of EP0110591A1 publication Critical patent/EP0110591A1/fr
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
    • A43D8/32—Working on edges or margins
    • A43D8/40—Working on edges or margins by folding, turning in or over, hammering
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/18—Devices for applying adhesives to shoe parts
    • A43D25/183—Devices for applying adhesives to shoe parts by nozzles

Definitions

  • thermo-cementing and folding machines comprising a main drive shaft, folding instrumentalities arranged at an operating locality of the machine and including a creaser foot over which a marginal portion of a workpiece can be turned, adhesive supply means by which adhesive can be supplied, through a passage in the creaser foot, to the marginal portion of a workpiece being turned thereover, workpiece feeding means operable in timed relation with rotation of the main drive shaft for feeding a workpiece through the operating locality, and means for varying the rate at which such workpiece is fed, without varying the speed of rotation of the main drive shaft, wherein the rate at which adhesive is supplied to the workpiece marginal portion can be modified in response to variation in the workpiece feed rate.
  • the adhesive supply means comprises a ratchet-operated gear pump for supplying adhesive through the creaser foot, the ratchet being carried by an oscillating rod arrangement, said rod arrangement being connected to the workpiece feeding means, so that the speed of oscillation is determined by the speed of rotation of the main drive shaft.
  • the connection with the workpiece feeding means is such that any variation of the rate at which the workpiece is fed, under the control of the workpiece feed rate varying means, is effective to vary also the amplitude of the oscillation of the rod arrangement, and thus the distance through which the gear pump is rotated under the action of the ratchet.
  • thermo-cementing and folding machine in which the control of the adhesive supply is rendered more versatile, and in particular the control of deposition of adhesive is enhanced and further "suck back” and “fast forward” functions can be incorporated.
  • the adhesive supply menas comprises a gear pump driven by an n.c. motor in response to drive signals supplies thereto, in timed relation with the rotation of the main drive shaft, by a computer control circuit which is also effective to modify the incidence of the drive signals according to the operational state of the workpiece feed rate varying means.
  • n.c. motor where used herein, is to be understood a motor the operation of which is controlled by control pulses supplied thereto in accordance with digitised information appropriate to the desired operation of the motor. Examples of such motors are stepping motors and d.c. servo motors.
  • the computer control circuit is conveniently effective, when the workpiece feed rate varying means is inoperative, to supply drive signals at an incidence which is in a pre-determined relationship with rotation of the main drive shaft and to reduce the incidence of the drive signals to a pre-determined proportion, when said varying means is rendered operative.
  • the pre-determined relationship referred to above is itself able to be set by the operator so that the amount of adhesive supply can be varied according to the assessment of the operator of the quantity required.
  • the computer control circuit could be arranged to vary the pre-determined proportion referred to above according to the amount by which the workpiece feed rate varying means varies the rate of feed of the workpiece, it has been found in practice to be acceptable if the pre-determined proportion is 50% of the "full" rate.
  • the computer control circuit comprises a shaft encoder driven by the main drive shaft and supplying pulses to a processor of said circuit, in response to each of which pulses a control signal having a pre-determined value or a .proportionately reduced value is supplied to an accumulator forming part of the circuit, and said accumulator causing drive signals to be supplied to the motor according to the cumulative value of said control signals.
  • the computer control circuit comprises a potentiometer by which an analogue signal can be supplied, and an analogue-to-digital converter which receives a signal from the potentiometer and which, in response to a pulse emitted by the encoder, supplies a corresponding or proportionately reduced digital "increment" value to the accumulator which sums the successively supplied increment values, said accumulator "overflowing" each time it reaches a pre-determined value and thereupon supplying to the processor a signal in response to which a drive signal is supplied to the motor as aforesaid.
  • operator-controlled means is provided for setting the pre-determined value of the analogue signal, and thus for enabling the operator to control the rate of operation of the gear pump and consequently the amount of adhesive supplied, as aforementioned.
  • gear pump is caused to operate in a reverse direction, independently of the rotation of the main drive shaft, through a pre-determined distance, and, in response to switching on such operation, the gear pump is caused to operate in a forward direction at high speed, independently of the rotation of the main drive shaft, through a pre-determined distance, whereafter it continues to operate in timed relation with rotation of the main drive shaft is aforesaid.
  • the preferred distance through which the gear pump is caused to operate in a reverse direction is the same as that through which it is caused to operate at high speed in a forward direction; on the other hand, in other embodiments it may be desired that these two distances are different, and in particular that the "forward direction” is proportionately greater than the "reverse direction” distance.
  • operator-control means is provided for setting the pre-determined distance through which the gear pump is caused to operate in a reverse direction.
  • the operator may set the suck back according to e.g. the viscosity of the adhesive.
  • thermo-cementing and folding machine which finds use in the shoe industry and allied trades, where it is desired to fold the edge of the workpiece over on itself and secure it in a folded condition.
  • the machine comprises a work table 10 on which is supported a block 12 having a work-guiding surface 14 which curves upwardly, out of the plane of the work table 10, so as to provide a smooth fold-initiating surface for a workpiece the edge of which is to be folded.
  • a gauge finger 16 is provided which is adjustable heightwise by means of an adjustment knob 18.
  • a manually operable lever 20 is provided for raising the gauge finger 16 out of its operative position.
  • a creaser foot 22 is mounted with its end adjacent the block 12.
  • the creaser foot has a central passage through which hot-melt adhesive can be fed, the foot having an outlet through which adhesive can be fed on to the central region of the part of the workpiece to be folded.
  • the passage in the creaser foot is supplied through a delivery tube 24 which is connected "upstream" to a gear pump 26 which in turn is fed from a melt chamber 28. Because the adhesive is a hot-melt, the melt chamber 28, delivery tube 24 and creaser foot 22 are each provided with a separate heater, respectively H1, H2 and H3, of the electric cartridge type.
  • the delivery tube furthermore, is clad with appropriate thermal insulation.
  • a manually operable lever 38 is provided, which together with the lever 20, thus facilitates the introduction of a workpiece to the operating locality of the machine.
  • the heightwise position of the creaser foot 22 is adjustable by an adjustment knob 40.
  • the machine as so far described above, is conventional. Furthermore, also as is conventional, the machine comprises a snipping knife arrangement generally designated 30 and comprising a fixed blade 32 and a movable blade 34 mounted on the fixed blade, the blades being so arranged, "downstream" of the block 12, that they can cut the upstanding edge portion of the workpiece which is supported by the block 12.
  • the snipping knife arrangement 30 is used where the edge of the workpiece defines a so-called "inside" curve.
  • a work feed arrangement comprising a hammer-and-anvil (not shown) which are moved orbitally, the arrangement being such that over a given part of the orbit, the hammer-and-anvil trap the workpiece therebetween as they move rearwardly over a given distance (feed length) and at a given speed (feed speed).
  • the hammer-and-anvil are driven through a main drive shaft (not shown) of the machine, by means of an electric motor (not shown) through a clutch.
  • the motor speed, and thus the feed speed, is controlled by a first treadle (not shown); a second treadle (also not shown) also is provided for operating two switches S6, S7, the arrangement being such that only one of said switches can be operated at any one time.
  • Switch S6 is effective to reduce the feed length, which thereby causes pleating of the folded over margin of the workpiece (and is thus especially useful on sharp so called “outside” curve).
  • "maximum” and “minimum” stops 46, 48 are provided, said stops being arranged to project through an appropriate slot 50 in the control panel to facilitate operator setting thereof.
  • Switch S7 is effective to cause the snipping knife arrangement 30 to operate.
  • a main switch S4 is provided on a control panel 36 of the machine, and, for controlling the supply of adhesive during the operation of the machine, a knee-operated switch S5 is provided.
  • the control panel 36 of the machine has, in addition to the main "adhesive supply" switch S4, a mains on-off switch S1 and a motor on-off switch S2.
  • Mains power is thus supplied to two solenoids SOL1, SOL2 and to heaters H1, H2, to be referred to hereinafter, and also to a transformer (not shown) which steps down the voltage to 12 volts.
  • a 12V a.c. supply is thus supplied to a work lamp (not shown) which can be switched on by switch S3, also on the control panel 36.
  • this circuit supplies power to a further heater H3. From this 12V a.c. circuit, furthermore, is derived an unsmoothed 12 volt d.c.
  • the control panel 36 also is provided with various indicator devices, including a light-emitting diodes LED 1, LED 2 and LED 3, associated respectively with heaters H1, H2 and H3, and LED 4 and LED 5, associated respectively with an "adhesive supply" circuit and with the knee-operated switch S5, also as to be described in detail later.
  • a light-emitting diodes LED 1, LED 2 and LED 3 associated respectively with heaters H1, H2 and H3, and LED 4 and LED 5, associated respectively with an "adhesive supply" circuit and with the knee-operated switch S5, also as to be described in detail later.
  • switches S6 and S7 which are operated under the control of the second treadle of the machine, cannot be operated simultaneously, the one switch being operated by depression of the toe of the operator on the treadle, and the other by depression of his or her heel. In some cases, however, it is desirable that snipping should take place while the feed length is reduced, and to this end a further control switch S8 is provided on the control panel 36 which is effective, in combination with switch S6, to cause snipping to take place simultaneously with the reduced feed length.
  • the machine in accordance with the invention is computer-controlled and comprises a central processor unit (CPU) in the form of a single chip 8- bit micro-computer (in casu, a Zilog Z8681 which, in addition to a micro-processor, also incorporates a random access memory (RAM) (shown separately in Fig. 2) and scratch pad; this micro-computer is obtainable from Zilog Inc.).
  • CPU central processor unit
  • a system clock C comprising a free-running 8 MHZ crystal, is provided for the internal timing of the CPU.
  • the CPU is connected via I/O bus I/OB with input and output ports IP, OP and via a memory address and data bus DB with a non-volatile memory in the form of an EPROM (erasable programmable read-only memory), which is accessed by the CPU via the data bus DB for instructions to execute.
  • a conventional decoder D is also provided for controlling the functioning of the input and output ports IP, OP.
  • the control circuit also includes an analogue-to-digital convertor (ADC) to which signals are supplied by the potentiometers VR4, VR5, VR6, thermisters TS1, TS2, TS3, and switches S4, S8.
  • ADC analogue-to-digital convertor
  • the ADC is interrogated by the CPU, by the I/O bus, each time a mains interrupt signal is supplied to the CPU by the control box MI. More particularly, the various channels of the ADC are interrogated in turn, one in response to each mains interrupt in a so-called "wrap around" sequence.
  • the ADC in response to a signal from the decoder D, supplies information as to the state of the interrogated channel via the input port IP.
  • switches S6, S7 Also supplying information via the input port in reponse to an enabling signal from the decoder D, are switches S6, S7, while switch S5 provides a direct "interrupt" signal to the CPU.
  • the electronic control circuit also comprises a re-set sub-cirucit R by which, upon starting up of the machine, the CPU is enabled to set the controls to their correct state in a rapid manner.
  • This sub-circuit R is directly connected into the CPU for this purpose.
  • a further, direct, "interrupt” input is provided to the CPU from a shaft encoder E which is driven by the main drive shaft of the machine.
  • the shaft encoder E is conveniently a disc having a plurality of (in casu sixteen) equally spaced notches, with which are aligned two opto-switches operating through a flip-flop (set re-set) to supply pulses to the CPU.
  • the switches are spaced apart from one another by a distance more than the width of a notch, so that if, for example, the main drive shaft is arrested in a position in which the edge of a notch is aligned with one of the switches, any vibration of the disc, e.g.
  • the CPU supplies outputs, via output port OP, to sub-circuits controlling the heaters H1, H2, H3, to sub-circuits controlling the solenoids SOL1, SOL2, to motor drive SMD and to the various LEDs referred to above.
  • the n.c. motor M is operatively connected to the gear pump 26 and serves to control the rate of feed of adhesive through the adhesive-supply system.
  • switch S4 which is a three-position switch, is provided for manually switching the adhesive supply system on and off; the third position will be referred to later.
  • Switch S4 is an overall control for switching at the start and finish of a working shift.
  • knee-operated switch S5 is provided for switching the system on and off in each working cycle. Both switches S4, S5 serve, through the CPU, to switch motor M on and off.
  • the operating speed of the motor M is controlled by the shaft encoder E, as will now be described.
  • a digital "increment" value is added to an accumulator stored in the RAM of the CPU.
  • This increment value is determined by an operator setting of the potentiometer VR4, which is provided with an adjustment knob 42 on the control panel 36 for this purpose.
  • the potentiometer VR4 forms part of a metering circuit which supplies a signal through the ADC to the CPU.
  • the range of adjustment of the potentiometer VR4 corresponds to a range of ratios of rotation of the main drive shaft to rotation of the motor M.
  • the range of ratios is approximately 40:1 to 400:1 and this range of ratios corresponds to an output from the ADC of 255 to 0 (FF to 0 hex).
  • the value of the signal from the ADC constitutes the increment value.
  • the accumulator adds the increment value to the accumulated total in response to each pulse from the shaft encoder, and each time the accumulator "overflows", the motor M receives a drive pulse; in the case of a stepping motor, it is stepped through one step.
  • solenoid SOL1 is provided which switches the feed length between maximum and minimum as determined by the stops 46, 48, referred to above. More particularly, as is conventional, the solenoid SOL1 serves to cause the geometry of a linkage system to be so varied as to consequently vary also the distance through which the hammer-and-anvil move in feeding the workpiece. In the machine in accordance with the invention, solenoid SOL1 is operated by actuation of treadle-operated switch S6.
  • Reducing the feed length is of course effective to reduce the rate at which the workpiece is fed through the machine, but without reducing the feed speed, as measured at the main drive shaft, so that the amount of adhesive fed is not generally affected by a reduction of feed length. This can lead to excessive adhesive being supplied, which adhesive may of course be squeezed from beneath the fold, leaving an unsightly amount of adhesive visible in the finished workpiece.
  • a "metering modify" circuit is provided which supplies an appropriate signal through the input port.
  • This circuit operates in combination with the "metering" circuit and with the circuit incorporating the switch S6 so that, upon operation of the switch S6, the increment value referred to above is reduced, thereby reducing the frequency of "overflow” of the accumulator, and thereby increasing the ratio between the main drive shaft and the output shaft of the motor M. It has been found that a reduction of 50% of the increment value is appropriate when operating with reduced feed length.
  • switch S4 is provided with contacts 'which are closed when in its third position. Of course, in the third position, the adhesive supply is still switched “on”.
  • the amount of "suck back” can be adjusted by the operator and to this end the potentiometer VR5 is provided in a "suck back setting" circuit, the potentiometer having an adjustment knob 44 on the control panel 36.
  • the "suck back setting" circuit supplies a signal through the ADC so that the pre-determined distance can be varied according to operator preference.
  • the ADC serves to provide a "suck back" value in the range of 0 to 255 (0 to FF hex) in response to the setting of the potentiometer VR5.
  • the motor M driving the gear pump 26 is actuated, upon actuation of the knee-operated switch S5, and operates through a pre-determined distance at a fast speed.
  • the pre-determined distance may be the same as the "suck back" distance, or if desired, may be a proportion (whether greater or smaller) of that distance.
  • the adhesive sucked back in the preceding machine cycle is thus restored at the start of each machine cycle.
  • the operation of the gear pump 26 at a fast speed is enabled as aforesaid only if the main drive shaft is rotating. More especially, the "fast speed" operation of the pump is initiated only after two pulses have been generated by the shaft encoder E.
  • the operation of the snipping knife arrangement 30 is controlled by solenoid SOL2, which is operated upon actuation of the treadle-operated switch S7.
  • control switch S8 is provided, actuation of which is effective, when switch S6 is also actuated to cause snipping to take place simultaneously with the reduced feed length; that is to say, actuation of switch S8 causes solenoid SOL2 to be energised when switch S6 is actuated.
  • the CPU When the machine is switched on at the start of a working shift, the CPU is first enabled and ensures that any incorrect settings of the various operating elements are corrected. Thereafter, signals are supplied via the output port OP to heaters H1, H2 and H3, which respectively supply heat to the melt chamber 28, delivery tube 24 and creaser foot 22. Because the construction of the various elements, it is likely that the creaser foot 22 will heat up considerably more rapidly than the melt chamber 28, while the delivery tube 24 will heat more rapidly than the melt chamber but less rapidly than the creaser foot. Consequently, initially only the heater H1 forthe melt chamber 28 is switched on. The heater H2 for the delivery tube 24 is then switched on at a pre-determined stage in the heating up of the melt chamber, and finally the heater H3 for the creaser foot 22 is switched on at a pre-determined stage in the heating up of the delivery tube.
  • thermistor TS1 For sensing the temperature of the melt chamber thermistor TS1 is provided, incorporated in a sub-circuit by which a signal is supplied to the ADC, which converts the signal to a numerical value between 255 and 0 (FF hex and 0).
  • the switching on of the heater H2 for the delivery tube 26 takes place when the value of the ADC output reaches a pre-determined number.
  • the temperature of the delivery tube 24 is also sensed by thermistor TS2, incorporated in a sub-circuit identical with that for the melt chamber, and at a given numerical value, the heater H3 for the creaser foot is switched on.
  • a "target" temperature is pre-set and cannot be varied by the operator.
  • the temperature control sub-circuit operate, once the target temperature has been achieved, to maintain the temperature at the target, in a manner described below.
  • the temperature of the creaser foot is also sensed by thermistor TS3, incorporated in a sub-circuit which is generally similar to the aforementioned sub-circuits, but which also includes potentiometer VR6, having an adjustment knob 52 on the control panel.
  • the maximum resistance of the potentiometer VR6 is relatively small in relation to that of the thermistor TS3, but is sufficent to enable the temperature of the creaser foot to be varied over a range of some 20°, at the level of temperatures at which it is expected the machine will normally operate; the normal temperature range would be expected to be within approximately 130 to 150°C.
  • a programm stored in the EPROM establishes a band of numerical values extending at either side of the target value, this band representing a band of temperatures .at either side of the target temperature.
  • the appropriate duty cycle for the heaters over the next time interval is calculated; more specifically, the difference between the actual and target temperatures is calculated and, depending upon this difference, a proportion of the time interval is determined during which the heater is to be switched on, and appropriate instructions are issued, which are then executed during the time interval.
  • the programme could calculate that the heater need be switched on for only 55% of the time interval, in which case after 55 main interrupts, the heater will be switched off for the remainder of that time interval.
  • LED4 on the control panel 36 flashes to indicate that heating up is taking place.
  • LED4 is constantly illuminated.
  • a warning signal is supplied to an appropriate one of the three light-emitting diodes LED1, LED2, LED3, which, as mentioned above, are associated respectively with the heaters H1, H2, H3.
  • the appropriate LED will flash. In such a case, furthermore, in order that the operator can continue to use the machine for a limited period, e.g.
  • the machine in order to finish a batch of work being operated upon, even though the monitoring of the performance of the heaters is no longer being correctly carried out, while at the same time ensuring that the machine will not be damaged by continued use, once a malfunction of the thermistor is detected, the machine will continue to operate for a further pre-determined period (in casu ten minutes), during which period a 50% duty cycle is implemented for the heater associated with the malfunctioning thermistor. That is to say, during each time interval the heater will be switched on and off for equal proportions.
  • the CPU instructs a relay RL1 to drop out, whereby the mains power supply is cut off and thus the machine operation is terminated and all the heaters are de-energised.
  • the diodes LED1, LED2, LED3 are also used to diagnose any "heater channel” failures, in which case the appropriate LED is constantly illuminated. Such failures include failure of the heating elements and of the triacs controlling the heater elements, and also if one of the thermistors falls out of or is removed from the pocket in which it is to be located. In such circumstances, the warning is indicated when the numerical value moves outside the band (and in this case the observed change in signal is likely to take place more slowly than in the case of a thermistor going into "open circuit” condition - which feature of course is utilised to distinguish between the failure of the sensing circuit and that of the heater circuit or heater control circuit). If thereafter the change in numerical value continues to take place away from the target value, an "interlock" signal is supplied by the thermistor, causing the power supply to the machine to be switched off, again by relay RL1 dropping out.
  • the relay RL1 also serves as a general "watch dog" over the whole of the control circuit. To this end, it is maintained in a "made” condition during normal operation of the machine by a control sub-circuit which is "refreshed” at regular intervals, failure to refresh the sub-circuit causing the relay RLK1 to drop out. More particularly, the sub-circuit receives a signal at each mains interrupt, the signal serving to change the state of the circuit between "1" and "0", the arrangement being such that switching to the "1" state constituting the "refresh” signal. The sub-circuit is arranged to become de-energised, in the absence of a refresh signal, after a time interval which is greater than the interval between two "1" signals. De-energisation of the sub-circuit of course switches off the relay, thereby terminating the power supply to the machine.

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Claims (10)

1. Machine d'encollage à chaud et rempliage comprenant:
un arbre principal d'entraînement,
un appareillage à remplier disposé en un emplacement de travail de la machine et comprenant un pied de pliage par-dessus lequel peut être retournée une marge d'une pièce,
des moyens d'alimentation en adhésif à l'aide desquels de l'adhésif peut être déposé, par l'intermédiaire d'un passage situé dans le pied de pliage, sur la marge d'une pièce qui est retournée par-dessus celui-ci,
des moyens d'avance de pièce pouvant être mis en service en synchronisme avec la rotation de l'arbre d'entraînement principal afin de faire avancer une pièce à travers l'emplacement de travail, et
des moyens pour faire varier la cadence à laquelle avance une telle pièce, sans faire varier la vitesse de rotation de l'arbre principal d'entraînement,
le débit auquel l'adhésif est délivré à la marge de la pièce pouvant être modifié en réponse à une variation dans la cadence d'avance de la pièce,
les moyens d'alimentation en adhésif (22 à 28) comprenant une pompe à engrenages (26), caractérisée en ce que ladite pompe à engrenages (26) est entraînée par un moteur à commande numérique (M) sous l'influence de signaux d'entraînement envoyés à celui-ci, suivant une relation temporelle par rapport à la rotation de l'arbre d'entraînement principal, à l'aide d'un circuit de commande à ordinateur (E, CPU, O/P, SMD) qui intervient également pour modifier l'apparition des signaux d'entraînement en fonction de l'état de fonctionnement des moyens de variation de cadence de l'avance de pièce (S6, 46 à 50).
2. Machine selon la revendication 1, caractérisée en ce que le circuit de commande à ordinateur (E, CPU, O/P, SMD) intervient lorsque les moyens de variation-de cadence de l'avance de pièce (S6, 46 à 50) sont hors sevice, pour fournir des signaux d'entraîmement à une fréquence qui se trouve suivant une relation prédéterminée par rapport à la rotation de l'arbre d'entraîmement principal, et pour réduire la fréquence des signaux d'entraînement jusqu'à une proportion prédéterminée lorsque lesdits moyens de variation (S6, 46 à 50) sont rendus actifs.
3. Machine selon la revendication 2, caractérisée en ce que ladite proportion prédéterminée est de 50%.
4. Machine selon l'une quelconque des revendications 2 et 3, caractérisée en ce q'ue le circuit de commande à ordinateur (E, CPU, RAM, O/P, SMD) comprend un codeur d'arbre (E) entraîné par l'arbre d'entraînement principal et envoyant des impulsions à un processeur (CPU) dudit circuit (E, CPU, RAM, O/P, SMD) en ce que, en réponse à chaque impulsion, un signal de commande ayant une valeur prédéterminée ou une valeur proportionnellement réduite est fourni à un accumulateur (RAM) faisant partie du circuit (E, CPU, RAM, O/P, SMD), ledit accumulateur (RAM) régissant l'envoi des signaux d'entraînement au moteur (M) en fonction de la valeur cumulée desdits signaux de commande.
5. Machine selon la revendication 4, caractérisée en ce que le circuit de commande à ordinateur (E, CPU, RAM, VR4, ADC, O/P, SMD) comprend un potentiomètre (VR4) à l'aide duquel peut être engendré un signal analogique, et un convertisseur analogique/numérique (ADC) qui reçoit un signal du potentiomètre (VR4) et qui, en réponse à une impulsion émise par le codeur (E), produit une valeur d"'incrément" numérique, correspondante ou proportionnellement réduite, à l'accumulateur (RAM) qui totalise les valeurs d'incrément successivement fournies, ledit accumulateur (RAM) "débordant" chaque fois qu'il atteint une valeur prédéteriminée et fournissant, à la suite de cela, au processeur (CPU) un signal à la suite duquel un signal d'entraînement est envoyé au moteur (M) comme indiqué précédemment.
6. Machine selon l'une quelconque des revendication 4 et 5, dans laquelle il est prévu des moyens à commande par l'opérateur (42) pour régler la valeur prédéterminée du signal analogique.
7. Machine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'il est prévu des moyens de commutation (S5) à l'aide desquels, de la façon précitée, le fonctionnement de la pompe à engrenages (26) est mis en et hors service, et en ce que, en réponse à la mise hors service de ce fonctionnement, la pompe à engrenages (26) est astreinte à fonctionner dans un sens inverse, indépendamment de la rotation de l'arbre d'entraînement principal, sur une distance prédéterminée et en outre, en ce que, en réponse à la mise en service de ce fonctionnement, la pompe à engrenages (26) est astreinte à fonctionner en marche avant et à vitesse élevée, indépendamment de la rotation de l'arbre d'entraînement principal, sur une distance prédéterminée, à la suite de quoi elle continue de fonctionner suivant une relation synchrone de la rotation de l'arbre d'entraînement principal comme indiqué ci-dessus.
8. Machine selon la revendication 7, caractérisée en ce que la distance prédéterminée sur laquelle la pompe à engrenages (26) est astreinte à fonctionner en sens inverse est la même que celle sur laquelle elle est astreinte à fonctionner à vitesse élevée en marche avant.
9. Machine selon l'une quelconque des revendications 7 et 8, caractérisée en ce qu'il est prévu des moyens à commande par l'opérateur (44, VR5) pour régler la distance prédéterminée sur laquelle la pompe à engrenages (26) est astreinte à fonctionner en sens inverse.
EP19830306752 1982-11-24 1983-11-07 Machine à coller à chaud et à rabattre Expired EP0110591B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8233506 1982-11-24
GB8233504 1982-11-24
GB8233504 1982-11-24
GB8233506 1982-11-24

Publications (2)

Publication Number Publication Date
EP0110591A1 EP0110591A1 (fr) 1984-06-13
EP0110591B1 true EP0110591B1 (fr) 1986-10-15

Family

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EP19830306752 Expired EP0110591B1 (fr) 1982-11-24 1983-11-07 Machine à coller à chaud et à rabattre

Country Status (4)

Country Link
EP (1) EP0110591B1 (fr)
BR (1) BR8306549A (fr)
DE (1) DE3366822D1 (fr)
ES (1) ES527775A0 (fr)

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US7762480B1 (en) 1999-01-26 2010-07-27 DL Technology, LLC. Dispense tip with vented outlets
US7905945B1 (en) 1999-11-08 2011-03-15 DL Technology, LLC. Fluid dispensing system having vacuum unit and method of drawing a vacuum in a fluid dispensing system
US8690084B1 (en) 2000-01-26 2014-04-08 Dl Technology Llc Fluid dispense tips
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GB8404965D0 (en) * 1984-02-25 1984-03-28 British United Shoe Machinery Adhesive supply system
FR2586175B1 (fr) * 1985-08-16 1987-11-27 Huber Auguste Machine a monter les cambrures
IT1217478B (it) * 1988-05-03 1990-03-22 Comelz Spa Macchina incollatrice e ripiegatrice dei bordi pepiferici di materiali in fogli e simili,operativamente asservita a programmazione elettronica dei suoi parametri funzionali
US5271348A (en) * 1989-08-12 1993-12-21 British United Shoe Machinery Ltd. Drive arrangement
US6866881B2 (en) * 1999-02-19 2005-03-15 Speedline Technologies, Inc. Dispensing system and method
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IT979235B (it) 1973-02-19 1974-09-30 Bocca A Macchina per ripiegare e incolla re bordi di pezzi in lavorazione in particolare nella fabbricazio ne di parti di calzature
GB1600377A (en) * 1977-04-16 1981-10-14 British United Shoe Machinery Shoe upper conforming machines

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US7694857B1 (en) 2002-04-29 2010-04-13 Dl Technology, Llc Fluid dispense pump with drip prevention mechanism and method for controlling same
US9108215B1 (en) 2002-04-29 2015-08-18 Dl Technology, Llc Fluid dispense pump with drip prevention mechanism and method for controlling same
US8707559B1 (en) 2007-02-20 2014-04-29 Dl Technology, Llc Material dispense tips and methods for manufacturing the same
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Also Published As

Publication number Publication date
ES8500558A1 (es) 1984-11-16
DE3366822D1 (en) 1986-11-20
BR8306549A (pt) 1984-07-03
EP0110591A1 (fr) 1984-06-13
ES527775A0 (es) 1984-11-16

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