ES1181658U - Deposit supply of funded fusible termo-fused products for machines montadoras (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Device supplying melted thermo-fuse products for assembly machines, including said supplying device: - a reservoir (11) of thermo-fusible product provided with a heating device (20) for melting said thermo-fusible product; - a system of pipes (12) heated by a heating device (20) for transporting said molten thermo-fusible product from the tank (11) to injectors (31) provided in said assembling machine (30); - a driving pump (13) of the molten thermo-fusible product connected to said pipe system (12); - a controller device (16) integrated in the supply device (10) and connected to said heating devices (20) and to said drive pump (13) for its control and regulation; said controller device (16) being provided with a memory where at least three operating configurations of the supplying device are stored corresponding to - a shutdown configuration in which the heating devices (20) and the drive pump (13) are turned off, and in which the supplying device (10) receives power; - a working configuration in which the heating devices (20) are active and keep the thermo-fused product melted at a pre-set working temperature and where the driving pump (13) provides a pressure in the pipe system (12)) and injectors, and - a rest configuration in which the heating devices (20) are active and keep the thermo-fused product melted at a resting temperature lower than the working temperature and higher than the ambient temperature; characterized because the supplying device (10) includes a temperature sensor (15) in direct or indirect thermal contact with the thermo-fusible product and connected to the controller device (16), and in that the controlling device (16) further includes: - an input terminal (17) of a signal indicative of the operation or stop of the assembling machine (30); - a first timer (18) of programmable duration; determining a first period of time (T1x) of programmed duration of said first timer (18) a moment of the change in the operating configuration of the supplying device (10) from a working configuration to a different operating configuration, beginning the period of said duration programmed with the detection, by the controller device (16), of a stop of the assembling machine (30) detected through said input terminal (17) of a signal indicative of the operation or stop of the assembling machine (30). (Machine-translation by Google Translate, not legally binding)

Description

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DESCRIPTION

SUPPLY DEVICE FOR FUNDED THERMO-FUSE PRODUCTS FOR

MOUNTING MACHINES

Technique Field

The present invention concerns a device for supplying molten heat-fusible products for mounting machines, which apply heat-melted products obtained by heating a raw material in a solid state. An example is thermo-fusible product applicator appliances that apply hot glue from solid-melt thermo-melt glue beads. Such devices are also referred to in the state of the art as hot glue equipment, hot-melt equipment, melting equipment, applicator equipment, among others.

State of the art

In the state of the art, devices for supplying molten heat-fusible products for mounting machines are known.

Documents ES1072215U, ES1078077U and ES1015910U describe examples of such supply devices.

Document US4547657A describes one of said supply devices equipped with the following three operating configurations:

a stop configuration in which the heating devices are disconnected, even if the supply device continues to be connected to the mains,

a working configuration in which the heating devices keep the melted thermo-fusible product at a working temperature, and in which a supply pump supplies said product at a certain pressure; Y

a stand-by configuration, in which the heating devices maintain the molten thermo-fusible product at a standstill temperature below the operating temperature but above the ambient temperature.

The stand-by configuration, when using a resting temperature lower than the working temperature, has a lower energy consumption and also delays the degradation of the thermal-fusible product and extends the useful life of the components of the supply device due to the continued non-exposure to high temperature.

Document US4547657A also discloses a sequence of change between the work configuration, the standby configuration and the stop configuration, which

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It shows the change from work configuration to idle configuration through a three position switch: OFF (stop), MANUAL and "AUTOMATIC" (automatic).

In the OFF position, the supply device does not heat the thermal fuse product.

If the hot melt product supply device is set to working temperature, the MANUAL position is activated, the supply device stops heating the thermal fuse product for a pre-selected period of time through a first digital timer installed in the integrated controller device in the supplying device, and after that time the resting temperature reached, regardless of its value, is maintained by means of an on and off control of the heating at rest temperature.

Therefore, in the solution described in document US4547657A, a resting temperature is not preselected, but the resting temperature is controlled indirectly through the time control during which the heat-fusible product stops heating causing cooling. Therefore, this implies an inaccurate control that depends on an estimation of the necessary cooling time based on the environmental conditions, the initial temperature of the thermo-fusible product, and the skill and experience of the operator, in other variables.

In the AUTOMATIC position, if the position of the switch is changed when the device is at maximum power and a working temperature has been reached, the device stops heating the thermal fuse product for a period of time preselected in said first timer and after this time the resting temperature reached is maintained by means of an on / off control of the heating at rest temperature for a second period of time preselected in a second timer installed in the controlling device by means of an on and off control of the heating at reduced temperature. After the second time preselected in the second timer, the device heats to maximum power and returns to the working configuration.

This solution does not allow to control the resting temperature, and therefore depends on the ability of the operator to configure the duration of the first timer to obtain a resting temperature low enough to stop the degradation of the thermal fusible product, but high enough to keep it melted, the error and the incorrect configuration being probable. In addition, the solution described does not allow the supply device to automatically enter the stop configuration, and may remain

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On, for example, overnight or during holiday days if the supply device is left unattended.

There are also known supply devices that include a communication card provided to be able to be connected to an external programmable logic controller integrated in the mounting machine, said supply device becoming dependent on the mounting machine from which it receives orders, however none of the documents known that describe this feature mention the possibility of including in the supply device a first timer that allows to change the operating configuration with a delay from a trigger signal.

Also known are the supply devices for the application of thermo-fusible products that integrate a time control clock that activates and deactivates the work configuration, the standby configuration and the shutdown configuration at pre-stored times.

However, there are no devices that supply thermo-fusible products that, without the need to be controlled with elements external to the applicator device, make a change of operating configuration autonomously from a stand-by configuration to a stop configuration as many times as the user wish.

Nor are there such supplying devices that autonomously make a configuration change from a work configuration to a stop configuration.

With this, the degradation of the thermo-fusible product will be delayed in periods where the device is not required to apply the product, for example in the rest of the food of the operators; It will extend the useful life of the components of the supply device: tank, conduction system, injectors, associated filters, pump, etc., due to the non-exposure continued at high temperature, and suppose an important energy saving.

A disadvantage of the external control of the supplying device requires that the mounting machine has a controlling device, and that this is programmed for coordination with said supplying device, which makes the installation of the supplying device very expensive in terms of time and cost and the Need for highly qualified staff.

Brief description of the invention

The present invention concerns a device for supplying molten thermo-fusible products for mounting machines.

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Preferably said heat-fusible product will be a glue or an adhesive that becomes fluid with high temperatures, for example from 80 ° C, the optimum application temperature being, for example, 170 ° C. Despite this, the present invention is applicable to other thermo-fusible products, such as plastics and the like.

The mounting machine is understood to be a machine in charge of joining different components or different parts of the same component to each other by applying controlled quantities of said melted thermo-fusible product in defined areas of said components, and by positioning and pressing each other of said components and / or said parts of components to be mounted in their final position until a hardening of the thermo-fusible product, so that when the pressure is removed the components remain in their assembly position. Typical examples of this type of mounting machines are the carton box assembly machines that, from a die-cut cardboard plate, and by applying hot glue in certain areas, obtain a box by folding parts and flaps formed in said die cut iron. Other assembly machines may also include the proposed supply device, such as furniture assembly machines or the like.

This type of mounting machine incorporates a device for supplying thermo-fusible products described in the present invention and providing them with the molten thermo-fusible product.

Said proposed device for thermo-fusible products includes:

• a deposit of thermo-fusible product equipped with a heating device for the fusion of said thermo-fusible product;

• a system of pipes heated by means of a heating device for transporting said molten thermo-fusible product from the tank to injectors provided in said mounting machine;

• a drive pump of the molten thermo-fusible product connected to said conduit system;

• a controller device integrated in the supply device and connected to said heating devices and said drive pump for control and regulation.

Thus, the tank and the conduit system are heated by means of a heating device that keeps the melted thermo-fusible product inside. The drive pump provides sufficient pressure to circulate the thermo product

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fuse through the conduction system and through the injectors. Typically, said injectors will consist of solenoid valves that will open or close by regulating the supply of thermo-fusible product, said solenoid valves being controlled by the mounting machine.

Said device controlling the supplying device is also provided with a memory where at least three operating configurations of the supplying device corresponding to:

• a shutdown configuration in which the heating devices and the discharge pump are turned off, and in which the supply device receives electrical power;

• a working configuration in which the heating devices are active and keep the melted thermo-fusible product at a working temperature and the active drive pump to maintain a pressure in the duct and injector system,

• a stand-by configuration in which the heating devices are active and keep the melted thermo-fusible product at a standstill temperature below the working temperature and above the ambient temperature.

It will be understood that the memory that stores said operating configurations can be a digital electronic memory, or it can also be a set of electro-mechanical systems connected in such a way that they determine said operating configurations, therefore the aforementioned stored operating configurations being in the circuit that integrates said electro-mechanical systems.

The active drive pump can have an intermittent drive and start up only when the pressure inside the conduction system is reduced when the thermal fuse product flows through the injectors, or during a pause after a thermo-fuse product dispensation , taking advantage of the fact that typically the mounting machines have a cyclic operation that alternates dispensing stages of thermo-fusible product with preparation stages.

The present invention also proposes that the supply device includes a temperature sensor in direct or indirect thermal contact with the thermo-fusible product and connected to the controller device. Said thermal contact may be a direct contact between the temperature sensor and the thermo-fusible product, or preferably between the temperature sensor and a thermo-conductive element that is in direct contact with the

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thermo-fusible product, such as a metal part of the thermo-fusible product tank.

The heating device will preferably be, but not limited to, an electric heating device, such as electrical resistors, inductive devices, etc.

The controller device also includes:

• an input terminal of a signal indicative of the operation or shutdown of the mounting machine;

• a first programmable duration timer;

determining a programmed duration of said first timer (ie the end of a programmed period of time) a moment of the change in the operating configuration of the supply device from a work configuration to a different operating configuration, starting the period of said duration programmed with the detection, by the controlling device, of a stop of the mounting machine detected through said input terminal of a signal indicative of the operation or stopping of the mounting machine.

Optionally, the drive pump is provided with a heating device for the fusion of said thermo-fusible product.

Therefore, it is proposed that the controller device integrated in the supply device be able to modify the operating configuration of the supply device after a period of inactivity of the mounting machine detected by the supply device through the input terminal. a working configuration to any other of the operating configurations, producing energy savings and avoiding degradation of both the thermal-fusible product and the components of the supply device. The delay time between the detection of the end of the activity of the mounting machine and the change of configuration of the supply device is determined by said first programmable duration timer, the duration of said period being programmable by an operator of the supply device.

The signal indicative of the operation or stop of the mounting machine can be provided for example by a contactor, an optical sensor, or any other type of sensor that detects the movement or position of parts or parts of the mounting machine, or of the components a mount that move or move during operation of the

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mounting machine The data provided by these sensors will therefore allow to know when the mounting machine is in operation and when it is stopped.

This allows the supply device to be coordinated with the mounting machine without the need for configuration and adjustment operations, and without the need for computer programming tasks, simply by feeding the input terminal of the supply device with the data of said sensor, which can be a simple single-bit binary information related to production / no production. This feature makes it possible to simplify and reduce the integration of the supply device with the mounting machine, while ensuring the correct functioning of the assembly, as well! as an optimal energy saving without unnecessarily damaging the thermo-fusible product or the components of the supply device.

According to a further embodiment, it is proposed that the first timer determine the change of the operating configuration from the work configuration to the standby configuration. In this case, it is also contemplated that the controller device includes a second programmable duration timer, determining the programmed duration of said second timer (ie the end of a programmed period of time) at the time of the change in the operating configuration of the supply device. from the standby configuration to a stop configuration, the period of said programmed duration beginning with the end of the period determined by said first timer. This feature allows a downtime of the mounting machine determined by the first timer to produce the change from configuration to standby configuration, and if said standby configuration is prolonged during the period determined by said second timer a new change occurs from configuration to stop configuration.

This makes it possible to ensure that if the mounting machine is not functioning, the stop configuration will be activated and that, by means of a correct programming of the duration of the first and second timers, the supply device will enter the standby configuration coinciding, for example, with the stop from the staff middling.

Alternatively, it is contemplated that the first timer determines the change of the operating configuration from the work configuration to the stop configuration directly without requiring a second timer.

The programmable duration of the first and / or second timers can be introduced through a control interface integrated in the supply device, connected to said control device for control. Said interface may consist of a rotor, for example

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connected to a potentiometer, it can be implemented by means of switches or actuators such as pushbuttons and selectors, together with a display such as a digital display, a touch screen or any other known control interface solution.

In addition, it is proposed that said controller device be provided in addition to a time control clock that determines the activation / deactivation of each of said three operating configurations at pre-established hours. Combining this characteristic with the previous ones allows to ensure that the supply device will be ready to supply the thermo-fusible product for example at the start time of the working day, but that if during the period determined by the first timer the production does not start, For example, because it is a holiday, go to standby configuration, and after the period determined by the second timer, go to the stop configuration automatically without requiring specific programming.

Additionally, the first programmable timer and / or the second programmable timer may each include a relay timer and be integrated into a circuit of the supply device connected to the controller device and said heating devices.

Said timer relay allows to measure a pre-established time before causing a connection or disconnection of a circuit, causing the change in the operating configuration of the supply device. The duration of the pre-set time can be modified (programmed) for example by adjusting a potentiometer associated with said programmable timer.

Alternatively, the first programmable timer and / or the second programmable timer may be digital timers provided with a microprocessor and be integrated in a circuit of the supply device connected to the controller device and said heating devices. In this case, said microprocessor executes a function or routine that allows to measure a pre-established time and cause the change of operating configuration when the pre-established time is used up. The programming of the duration of said pre-established time will occur in this case by modifying said function or routine.

According to another additional embodiment, the controller device is a programmable logic controller or a programmable automaton that integrates a microprocessor that allows

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execute routines or functions programmed in said programmable logic controller or said programmable automaton.

Additionally, it is contemplated that the first programmable timer and / or the second programmable timer are implemented by means of programming functions of said controller device constituted by a programmable logic controller, also called an automaton, or programmable automaton. In this case, the first programmable timer and / or second programmable timer will not be a physical element, but rather a set of functions or routines that constitute a computer program executed by the controller device integrated within the supply device, and its duration may be programmed by means of a modification of said function or routine programmed in the controller device. Specifically, it is proposed that the first and / or second timer be executed in a programmable logic controller memory area, and compared with another memory area where the programmable duration is stored allowing, through the use of an internal controller clock Programmable logic, measure the time with said first and / or second timer until the pre-set programmable duration is reached.

It will also be understood that any range of values offered, such as temperature values, may not be optimal in their extreme values and may require adaptations of the invention for said extreme values to be applicable, said adaptations being available to an expert in the matter.

Other features of the invention will appear in the following detailed description of an example of realization.

Brief description of the figures

The foregoing and other advantages and characteristics will be more fully understood from the following detailed description of an exemplary embodiment with reference to the accompanying drawings, which should be taken by way of illustration and not limitation, in which:

Fig. 1 shows a diagram of the proposed thermo-fusible product supply device according to an embodiment provided with a first and second timers and also including a time control clock;

Fig. 2 shows an explanatory flow chart of the proposal of this invention by the preferred use of a first timer;

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Fig. 3 shows an explanatory flow chart of the proposal of this invention by the preferred use of a first and second timers.

Detailed description of an example of realization

The attached figures show exemplary embodiments with an illustrative non-limiting character of the present invention.

According to an embodiment of the proposed invention, the supply device 10 of molten thermo-fusible product is a hot glue supply device that forms an autonomous unit that receives electrical power from an external source, such as an outlet or a generator, and that is coupled to a machine assembling 30 cardboard boxes.

Said supply device 10 includes, integrated in a chassis, at least:

• a tank 11 of heat-fusible product, in this case a tank 11 that is fed with solidified glue beads, said tank 11 being provided with a heating device 20 for the fusion of said heat-fusible product;

• a conduit system 12 heated by means of a heating device 20 for transporting said molten thermo-fusible product from the tank 11 to hot glue injectors 31 provided in said mounting machine 30;

• a drive pump 13 of the molten thermo-fusible product connected to said conduit system 12 and provided with a heating device 20 for the fusion of said thermo-fusible product;

• a controller device 16 integrated in the supply device 10 and connected to said heating devices 20 and said drive pump 13 for control and regulation.

The heating devices 20 will preferably be an electrical resistor or an induction device. The thermo-fusible product is expected to be some type of glue that can be dispensed as a hot glue. In such a case the working temperature will preferably be around 170 ° C, for example between 165 ° C and 175 ° C, and the resting temperature will be around 80 ° C, for example between 75 ° C C and 85 ° C.

The conduit system 12 will have a part integrated with said chassis, but another part may extend beyond said chassis to feed the hot glue injectors 31 of the mounting machine 30, for example by way of a flexible conduction. To prevent the glue from solidifying inside said flexible conduit it will be thermally

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isolated, and could also include an electrical resistance throughout its longitudinal development to maintain its temperature at a working temperature that guarantees that the thermal fusible product reaches the hot glue injectors 31 at the correct temperature, even if the production it stops for some time with the molten tail stored inside said flexible conduction.

Likewise, the drive pump 13 will be fixed to said chassis and will also include a heating device 20, for example electric resistors or inductors, to prevent hardening of the thermo-fusible product inside it, or to allow its subsequent melting when necessary.

Said controller device 16 will be provided with a memory where at least three operating configurations of the supply device 10 corresponding to:

• a shutdown configuration in which the heating devices 20 and the impulse pump 13 are turned off, and in which the supply device 10 receives electrical power;

• a working configuration in which the heating devices 20 are active and keep the melted thermo-fusible product at a working temperature and the drive pump 13 active to maintain a pressure in the duct system 12 and injectors 31,

• a stand-by configuration in which the heating devices 20 are active and maintain the molten thermo-fusible product at a standstill temperature below the working temperature and above the ambient temperature;

A temperature sensor 15 will be in direct or indirect thermal contact with the heat-fusible product, for example in contact with a metal part of the tank 11 of the heat-fusible product, and connected to the controller device 16. This allows the controller device to know in at all times the temperature of the stored thermo-fusible product, allowing to correctly regulate the connection and disconnection of the heating devices 20 to keep the melted thermo-fusible product at a temperature within a range of target temperatures, or allowing the controlling device 16 to increase or decrease the temperature of the thermo-fusible product by keeping the heating devices 20 connected or disconnected until a threshold temperature is reached. The regulation of said heating means 20 will depend on the

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operating configuration implemented at any time by the controller device 16.

In accordance with the proposal of this invention the controller device 16 will also include:

• an input terminal 17 of a signal indicative of the operation or shutdown of the mounting machine 30;

• a first timer 18 of programmable duration;

The input terminal 17 could for example be a connector for the connection of a binary signal cable that transmits only an indicative signal of operation or stop of the mounting machine 30. Said binary signal can be supplied for example by a contactor, by a photoelectric sensor, or by another binary detector installed in a part of the mounting machine 30 capable of modifying its position or state depending on whether the mounting machine 30 is in operation or stopped, or that during its operation has a cyclic displacement and During its stop it is static.

Said first timer 18 may be constituted, for example, by a timer relay and be integrated in a circuit of the supply device 10 connected to the controlling device 16 and said heating devices 20. In this embodiment the programmable duration of said first timer 18 may be regulated, for example, by a potentiometer linked to said timer relay.

Alternatively, it is proposed that said first timer 18 be a digital timer provided with a microprocessor and that it be integrated into a circuit of the supply device 10 connected to the controller device 16 and said heating devices 20. In this case it will be understood that the microprocessor implements a Programming function, as a computer program, which will perform the timer functions. For example, by pressing buttons installed on the interface 1 equipped with a control panel of the supply device 10 that modify the programmed duration value of at least a first timer 18, and whose value is indicated in a digital visual indicator, an operator may modify the programmable duration of said first timer 18.

It is also contemplated that the supply device integrates a programmable logic controller, provided with at least one microprocessor, performing the functions of the controller device 16. In this case the first timer 18 could be a programming function implemented in said programmable logic controller (PLC). which uses the internal clock of the PLC and some memory areas of said PLC to execute said function of

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programming, allowing to modify the duration of the timer by modifying the first time period T1x of pre-set programmable duration stored in a memory area of the programmable logic controller.

The controlling device 16 of the supply device 10 can know if the mounting machine 30 is in operation or if it is stopped through the information received by said input terminal 17, although if the mounting machine 30 is stopped it cannot know the cause of said neither stop nor predict the duration of said stop, which can be momentary, for example to correct an error, feed some supply to the mounting machine 30, or for a brief pause of the operators, or it can be a long-term stop, for For example, the break for the operators' meal period, the end of a batch of product, or the end of the working day.

When the supply device 10 is in working configuration, with the thermo-melting product melted at working temperature, and the controlling device 16 determines that the mounting machine 30 has stopped production, the first timer 18 starts measuring the first time T1 , when said first time T1 equals or exceeds the first pre-established period of time T1x without detecting, by the controlling device 16, a reactivation of the mounting machine 30 the supply device 10 changes its operating configuration to the standby configuration according to one realization, or the stop configuration according to another realization, the cooling of the thermo-fusible product starting. This operating scheme can be seen in the attached Fig. 2.

According to another embodiment, corresponding to Fig. 3, the controller device 16 may also include a second timer 19 of programmable duration. The nature of said second timer 19 may be equivalent to any of the embodiments of the first timer 18 described above.

When the first timer 18 determines a change in operating configuration from the work configuration to the standby configuration, the measurement of the second time T2 is initiated by the second timer 19.

During this period the thermo-fusible product is gradually cooled and if it reaches a pre-established resting temperature, detected by said temperature sensor 15 and which preferably will be around 80 ° C, the heating means 20 are controlled by part of the controlling device 16 to maintain said resting temperature.

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When the second time T2 measured by the second timer 19 equals the second pre-established time period T2x without the assembly machine 30 having re-started production, and without an operator manually reconfiguring the supply device 10, then the device controller 16 automatically activates the stop configuration, disconnecting the heating devices 20, allowing the thermal fuse product to reach room temperature and allowing the supply device 10 to receive electrical power.

The programmable duration of the first and / or second time periods T1x and T2x of the first and / or second timers 18 and 19 may be modified by a user of the supply device 10 through a control interface 1 integrated in the supply device 10, connected to said controller device 16 for control. Said interface 1 can be from a rotor of a potentiometer to a touch screen connected to a programmable logic controller, through other configurations with push buttons and digital displays.

When the start-up of the mounting machine 30 is detected, the first and second times T1 and T2 return to zero to restart the time calculation if the necessary conditions set forth above are met.

Another feature that incorporates the supply device 10 is the incorporation of a time control clock 2, connected or integrated to said controller device 16, which determines the activation / deactivation of each of said three operating configurations at pre-established hours. This allows, for example, to heat the thermal fuse product before the arrival of the operators, for example at 6: 30h, so that it is at the working temperature when they arrive, for example at 7: 00h, and also allows programming the cooling of the thermo-fusible product at the end of the working day, for example at 6:00 p.m. Obviously there will also be controls on the interface 1 of the dispensing device 10 that will allow an operator to change the operating configuration thereof at will, or to cancel the time control clock 2 or the first and / or second timers 18 or 19.

According to a preferred embodiment, the delivery device 10 includes:

• the first timer 18 consisting of a timer relay coil and a timer relay contact;

• a voltage converter that converts the mains voltage, for example 400V, into control voltage, for example 24V;

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• a maneuver relay of the supply device comprising a relay coil and a relay contact; Y

• a contact of a contactor to be installed in the supply device 10 of the mounting machine 30, corresponding to the input terminal 17, the change in contact state initiating the period of said programmed duration of the first timer 18;

the contact of the operating relay of the supply device 10, the contact of the contactor and the coil of the timer relay in series, the coil of the operating relay of the supply device connected downstream of the voltage converter, and the contact of the timer connected to a connector of the controller device 16 of the supply device 10.

By said circuit when the working temperature of the supply device 10 is reached, the contact associated with the working temperature changes state, the maneuvering relay coil is energized and the maneuvering relay is closed. In this example, the maneuver relay contact closes when the temperature is reached, since it is normally open.

With this implementation, two scenarios are now presented, depending on whether the mounting machine 30 is in operation or is stopped.

If the mounting machine 30 is in operation:

• the contactor contact opens with each cycle of the mounting machine 30;

• the timer coil has no tension and the first time period T1x of the first timer 18 is equal to zero;

• the timer contact is still open and the supply device 10 is heating the heat-fusible product by activating the heating devices 20.

If the mounting machine 30 is stopped:

• the timer relay coil of the first timer has voltage and its internal clock starts counting the first time T1;

• when the first time T1 equals the first time period T1x pre-established, completing the count of the programmed duration time the contact closes (it is connected to the electronic board) and the supply device 10 goes to stop configuration.

It will be understood that the different parts that constitute the invention described in one embodiment can be freely combined with the parts described in other different embodiments even if said combination has not been explicitly described, provided there is no harm in the combination.

Claims (13)

5 10 fifteen twenty 25 30 1. Device for supplying molten thermo-fusible products for mounting machines, including said supply device: • a tank (11) of thermo-fusible product provided with a heating device (20) for the fusion of said thermo-fusible product; • a system of conduits (12) heated by means of a heating device (20) for the transport of said melted thermo-fusible product from the tank (11) to injectors (31) provided in said mounting machine (30); • a drive pump (13) of the molten thermo-fusible product connected to said conduit system (12); • a controller device (16) integrated in the supply device (10) and connected to said heating devices (20) and said drive pump (13) for control and regulation; said controller device (16) being provided with a memory where at least three operating configurations of the supply device corresponding to • a shutdown configuration in which the heating devices (20) and the impeller pump (13) are turned off, and in which the supplying device (10) receives electrical power; • a working configuration in which the heating devices (20) are active and keep the melted thermo-fusible product at a predetermined working temperature and where the impulse pump (13) provides a pressure in the conduction system (12 ) and injectors, and • a stand-by configuration in which the heating devices (20) are active and maintain the molten thermo-fusible product at a standstill temperature below the working temperature and above the ambient temperature; characterized because The supply device (10) includes a temperature sensor (15) in direct or indirect thermal contact with the thermo-fusible product and connected to the controller device (16), and because the controller device (16) also includes: • an input terminal (17) of a signal indicative of the operation or shutdown of the mounting machine (30); 5 10 fifteen twenty 25 30 • a first timer (18) of programmable duration; determining a first period of time (T1x) of programmed duration of said first timer (18) a moment of the change in the operating configuration of the supply device (10) from a working configuration to a different operating configuration, starting the period of said duration programmed with the detection, by the controlling device (16), of a stop of the mounting machine (30) detected through said input terminal (17) of a signal indicative of the operation or stopping of the mounting machine ( 30). 2. Supply device according to claim 1 wherein the first timer (18) determines the change of the operating configuration from the work configuration to the standby configuration. 3. Supply device according to claim 2 wherein the controller device (16) also includes a second timer (19) of programmable duration, determining a second period of time (T2x) of programmed duration of said second timer (19) the moment of change in the operating configuration of the supply device (10) from the standby configuration to a stop configuration, the second period of time (T2x) starting with the end of the first period of time (T 1x) determined by said first timer (18 ). 4. Supply device according to claim 1 wherein the first timer (18) determines the change of the operating configuration from the work configuration to the stop configuration. 5. Supply device according to any one of the preceding claims, wherein the duration of the first and / or second period of time (T1x, T2x) of the first and / or second timers (18, 19) is introducible through an interface control (1) integrated in the supply device (10), connected to said controller device (16) for control. 6. Supply device according to any one of the preceding claims, wherein said controller device (16) is also provided with a time control clock (2) which determines the activation / deactivation of each of said three operating configurations in pre hours -established. 7. Supply device according to any one of the preceding claims, wherein the first programmable timer (18) and / or the second programmable timer (19) each include a timer relay and are integrated in a circuit of the 5 10 fifteen twenty 25 supply device connected to the controller device (16) and to said heating devices (20). 8. Supply device according to any one of the preceding claims 1 to 6, wherein the first programmable timer (18) and / or the second programmable timer (19) are digital timers provided with a microprocessor and are integrated into a circuit of the supply device (10) connected to the controller device (16) and to said heating devices (20). 9. Supply device according to any one of the preceding claims, wherein the controller device (16) is a programmable logic controller or a programmable automaton that integrates a microprocessor. 10. Device according to any one of the preceding claims 1 to 6, wherein the controller device (16) is a programmable logic controller or a programmable automaton that integrates a microprocessor, and wherein the first programmable timer (18) and / or the Second programmable timer (19) are implemented by means of programming functions of said controller device (16). 11. Supply device according to claim 5, wherein the control interface (1) is composed of a drive organ that modifies the programmed duration of the first timer (18) and a display where the programmed duration of the first timer (18) is displayed. ). 12. Supply device according to claim 5 or 11 wherein the control interface (1) also includes actuating organs that disable the first and / or second timer (18, 19) and / or a time control clock (2) which determines the activation / deactivation of each of said three operating configurations in pre-established hours integrated in said controller device (16). 13. Supply device according to any one of the preceding claims, wherein the drive pump (13) is provided with a heating device (20) connected to the controller device (16) for the fusion of the thermo-fusible product inside said pump of impulsion (13).