Heating module of brazing equipment, module controller, brazing equipment and controller

Abstract

The utility model relates to a heating module for brazing equipment, in particular to reflow brazing equipment or selective brazing equipment. The fan impeller can be driven by the motor; a module controller; the module controller is arranged in or on the heating module and is arranged in such a way that a control current for controlling and / or regulating the rotational speed of the electric machine and / or the heating temperature of the heating element is generated in dependence on control data and / or temperature data; and wherein the module controller has a communication interface, which is arranged in such a way that it receives the control data and / or temperature data from a controller of the brazing device. The utility model also relates to a module controller for the heating module, a brazing device comprising the heating module and a controller for controlling the brazing device.

Description

Technical Field

[0001] The utility model relates to a heating module for soldering equipment, in particular for reflow soldering, wave soldering or selective soldering equipment, a module controller for the heating module, soldering equipment and a controller for the soldering equipment. Background Art

[0002] With the aid of a reflow soldering device, such as the reflow soldering device known from DE102019128780A1, in particular so-called SMD components (Surface Mounted Devices) are soldered to the surface of a printed circuit board with the aid of solder paste. Selective soldering devices are used to solder so-called THT components (Through Hole Technology), i.e. components that are inserted through a printed circuit board with their pins or pin rows. In the case of selective soldering, the component or the pin to be contacted is positioned just above the vertical axis of the liquid solder and contacts the solder, which is pumped through a solder nozzle. A printed circuit board equipped with SMD or THT components is also referred to as a solder. What these two types of soldering devices have in common is that the solder is soldered in a heated chamber or in a heated process channel in the case of larger devices. Providing heating for the chamber or process channel is an important aspect of these soldering devices.

[0003] The heating of the chamber or process channel in the operation of a brazing installation is associated with a high energy demand. Since a brazing installation usually comprises a large number of heating modules, their installation and connection are complex.

[0004] A fan module with a heater for a soldering system is known from DE 10 2021 118 853 A1, wherein the structural mounting aspects of the fan module on the soldering system are of great importance. Utility Model Content

[0005] The invention is based on the object of improving a brazing device compared to the prior art.

[0006] The purpose on which the utility model is based is achieved by a heating module for a soldering device, in particular for a reflow soldering device, a wave soldering device or a selective soldering device. The heating module comprises a motor, a fan impeller drivable by the motor, a module controller and preferably a heating element. The module controller is arranged in or on the heating module and is arranged so that a control current for controlling and / or regulating the rotation speed of the motor and / or the heating temperature of the heating element is generated in dependence on control data and / or temperature data. It is further provided that the module controller has a communication interface, which is arranged so that it receives control data and / or temperature data from a controller of the soldering device. This module has the advantage that the motor and the heating element can be connected only to the module controller with their power consumption components and not to the switch cabinet. Preferably, the heating element is arranged in or on the heating module.

[0007] The motor and the heating element are designed as electrical components. The windings of the motor and the heat-generating components of the heating element have a high electrical power consumption. The high electrical power consumption leads to high control currents and, for efficient energy transmission according to Ohm's law, also requires correspondingly large line cross sections from the power supply to the motor and the heating element.

[0008] In conventional brazing systems, the control current is generated in a central switch cabinet by a control unit and is conducted via long supply lines to the electrical consumers, such as motors and heating elements.

[0009] Such power supply lines with large line cross sections and also with a plurality of wires have a high weight and are associated with a high consumption of material. If these power supply lines also have to be laid over greater distances, additional work is generated due to the laying work and the required installation space for the lines in the soldering system. The resistance also increases with increasing line length, which in turn requires a larger line cross section. In addition, long lines are also exposed to the risk of damage in soldering systems, which in the case of such power supply lines is precisely accompanied by health risks for the operators of the system.

[0010] In contrast, the heating module according to the invention has the advantage that only power supply lines and signal lines and / or data lines are required for connection and use in the soldering device. Here, these lines can each have multiple cores or each be formed by multiple individual cores. As a result, a soldering device with fewer lines, especially high current performance, can be provided. The heating module according to the invention can also be regarded as a networked heating module.

[0011] A plurality of heating modules according to the invention can be arranged in a brazing system, in particular more than 1 and preferably more than 10. The above-mentioned advantages come into play especially when there are a large number of heating modules in a brazing system.

[0012] Advantageously, the module controller is configured such that status data of the heating module are provided to the controller via the communication interface. The status data include in particular motor speed, different temperatures, current consumption of the motor and / or heating elements, operating times of components for maintenance work and / or fault messages. The temperature data include in particular measured temperatures in the region of the heating module in a chamber or process channel of the brazing system and / or temperatures of components of the heating module.

[0013] The communication interface can be designed to receive or send control data, temperature data and / or status data via a bus system with a controller. A bus system has the advantage that the wiring effort for data transmission is further reduced when a plurality of heating modules are arranged in the soldering device.

[0014] Advantageously, the temperature data are provided at at least one input by at least one temperature sensor, wherein the temperature sensor is arranged in or on the heating module. A temperature sensor arranged in or on the heating module has the advantage that the heating module can be regulated to a certain temperature by its module controller based on control data as a guide variable and measured temperature data as a regulating variable. This is particularly advantageous if a plurality of heating modules are provided in the brazing system and different temperatures are set in different areas of the chamber and / or process channel than those of the controller.

[0015] It is conceivable that the module controller has a current connection for an AC voltage, in particular a multiphase AC voltage, wherein the AC voltage has a voltage in the range of 110 V to 420 V. The current connection for the AC voltage in the specified area enables a simple arrangement and integration of the heating module in the soldering device.

[0016] It is conceivable that the module controller has at least one voltage converter, which is configured to convert a supply voltage, in particular a DC voltage, for the module controller from an AC voltage. Thus, no further lines with a low DC voltage are required to supply the module controller itself.

[0017] The purpose on which the present invention is based is also achieved by a module controller for a heating module according to the present invention, the module controller comprising:

[0018] at least one communication interface;

[0019] A power supply input terminal for connection to a power supply line with an AC voltage;

[0020] Connectors for temperature sensors;

[0021] Power electronics for providing control current;

[0022] An output terminal for controlling current of the motor;

[0023] An output terminal for controlling current of the heating element;

[0024] In this case, the communication interface is provided to receive control data and / or temperature data and / or to transmit status data, in particular via a bus system.

[0025] Such a module controller has the same advantages as listed for the heating module.

[0026] The purpose on which the utility model is based is also achieved by a soldering device, in particular a reflow soldering device, a wave soldering device or a selective soldering device, which includes a preheating zone and / or a soldering zone, wherein a heating module according to the utility model and preferably a plurality of heating modules according to the utility model are arranged in or on the soldering zone and / or in or on the preheating zone. It is advantageous to use a heating module according to the utility model when the soldering device includes different zones or a large area to be heated. By using one or more heating modules according to the utility model, the complexity of the soldering device relative to the manufacturing work is reduced by fewer lines and wiring. In addition, the structural space is released in or on the soldering device, so that other components can occupy the structural space or the soldering device becomes more compact.

[0027] It is conceivable that at least one controller is provided for at least one heating module and preferably for a plurality of heating modules. The controller can provide control data for at least one heating module or for a plurality of heating modules.

[0028] It is further conceivable that a connecting load is provided which conducts an AC voltage and is electrically connected to at least one heating module according to the invention and preferably to a plurality of heating modules according to the invention arranged in series. The connecting load can be designed as a busbar (for example, an Energy BUS Bar), thereby further reducing the wiring effort.

[0029] Advantageously, the brazing device comprises a controller, wherein the controller is arranged to communicate with the module controller and preferably with a plurality of module controllers.Communication comprises sending and receiving data, for example via a bus system.

[0030] The purpose on which the present invention is based is also achieved by a controller for controlling the brazing device according to the present invention, which is configured to communicate with at least one heating module according to the present invention and preferably with multiple heating modules according to the present invention and / or with a module controller according to the present invention and preferably with multiple module controllers according to the present invention.

[0031] By means of a heating module, a module controller, a brazing apparatus and a controller, a brazing apparatus with improved resource utilization in operation and manufacturing may be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Further details and advantageous designs of the present invention can be obtained from the following description, on the basis of which embodiments of the present invention are described and illustrated in more detail.

[0033] Figure 1 A heating module is shown;

[0034] Figure 2 Shows that according to Figure 1 Brazing equipment for heating modules; and

[0035] Figure 3 Shown according to Figure 1 Schematic circuit diagram of multiple heating modules with a controller. DETAILED DESCRIPTION

[0036] Figure 1 A heating module 10 is shown having a motor 12 and a heating element 14. The motor 12 drives Figure 1 The fan impeller (not visible) is used to guide and heat the ambient air 16 through the heating element 14. The motor 12 and the heating element 14 are arranged on a carrier frame 18, with which the heating module 10 can be arranged on a brazing device 20, for example, as shown in FIG. Figure 2 shown.

[0037] The electric machine 12 is an electric motor and has an electrical connection 22 to control circuitry 24. The heating element 14 converts electrical energy into heat and has a connection 26 to control circuitry 28.

[0038] A module controller 30 is arranged on the heating module 10, to which the motor 12 and the heating element 14 are connected via control lines 24, 28 and are each connected to connectors 32, 34. The module controller 30 generates a first control current for controlling the motor speed of the motor 12 and a second control current for controlling the heating power of the heating element 14. These control currents are each provided at the connectors 32, 34 and are conducted to the respective power consumer, the motor 12 or the heating element 14 by means of the control lines 24, 28.

[0039] The module controller 30 also has a galvanic connection 38 to a power supply line 40 of a power source (not shown) and a communication interface 42 for sending 44 status data and receiving 46 control data.

[0040] Heating module 10 has a temperature sensor 48 which measures the temperature of heated air 50 flowing out of heating element 14 and makes it available as temperature data via signal line 52 at an input 54 of module controller 30. Input 54 can also be formed by communication interface 42.

[0041] exist Figure 2 2 shows a brazing device 20 without a cover in a view of a process channel 56 with a preheating zone 58, a brazing zone 60 and a cooling zone 61. The brazing material is conveyed along a process direction 62 from a device inlet 64 through the process channel 56 to a device outlet 66, is heated in the preheating zone 58, is brazed in the brazing zone 60 and is cooled in a controlled manner in the cooling zone 61.

[0042] In the preheating zone 58 and the brazing zone 60, a plurality of heating modules 10 are arranged on the upper side 68 of the process channel 56 for heating. Correspondingly, a plurality of heating modules 10 are arranged on the lower side 70. Heating modules 10 are also arranged in the cooling zone 61 in order to allow the temperature in the process channel 56 to cool slowly and produce a temperature transition to the brazing zone 60.

[0043] exist Figure 3 A schematic circuit diagram of two heating modules 10 used in a brazing device 20 is shown in FIG. Figure 2 The upper heating element 10 in FIG. 1 is shown as a schematic block, and the lower heating module 10 is shown as a schematic detailed view with related components bounded by dashed lines. The motor 12 and the heating element 14 are schematically shown as blocks in the lower heating module 10. The module controller 30 is represented by three components 42, 80, 82, which will be described in more detail below.

[0044] Figure 3 Further shown is a bus system 74 having lines 72 which are connected to the communication interfaces 42 of the heating modules 10. The bus system 74 connects the heating modules 10 to a controller 76 of the brazing device 20. The controller 76 communicates via the bus system 74 with the two heating modules 10 shown. Figure 3 The illustrated power supply lines 40 and the lines 72 of the bus system 74 are shown only as line sections; they can be routed further and lead to further heating modules 10 , which are not illustrated.

[0045] The controller 76 provides control data via the bus system 74 , which are received 46 by the heating module 10 via the corresponding communication interface 42 . The module controller 30 provides status data of the heating module 10 at the communication interface 42 , which are sent 46 to the controller 76 via the bus system 74 .

[0046] The bus system 74 is preferably designed as a CAN bus, but can also be designed as any other conventional bus system. Instead of the line 72, a wireless network such as WLAN or Bluetooth can also be provided.

[0047] The motor 12 and the heating element 14 may also be connected to the communication interface 42 in order to send data such as motor speed and heating element temperature to or receive data from the communication interface 42, wherein these bidirectional connections are represented by double arrows 78. The communication between the communication interface 42 and the motor 12 and the heating element 14 may be configured as a master-slave connection.

[0048] The current connection 38 of the module controller 30 is connected to a power supply line 40 which provides an AC voltage. The power supply line 40 may include a plurality of cores.

[0049] Within the respective module controller 30, a voltage converter 80 and power electronics 82 are both connected to the respective current connections 38. The AC voltage applied to the supply line 40 and the current connections 38 may be in the range of 110V to 420V and may be multi-phase.

[0050] The voltage converter 80 converts a low supply voltage, in particular a low supply voltage in the range of 12 V to 48 V, from an AC voltage, wherein the supply voltage is a DC voltage. The supply voltage supplies the communication interface 42 and the control elements of the power electronics 82. Due to the voltage converter 80 provided in each module controller 30, no additional power supply load with the supply voltage is required in the soldering device 20.

[0051] The corresponding power electronics 82 generate control currents as a function of the AC voltage of the supply line 40. The control data received 46 by the controller 76 via the communication interface 42 are provided by the power electronics 82 in order to generate control currents for the motor 12 and the heating element 14. Furthermore, a temperature sensor 48 is schematically shown, which measures the temperature of the air in the region of the heating module 10 and provides this temperature as temperature data via a signal line 52 at an input 54 of the module controller 30. The temperature is then regulated by the module controller 30 and the temperature value transmitted in the control data can be adhered to more accurately.

[0052] The different heating modules 10 can each receive control data addressed to the heating modules 10 from the controller 76 independently of each other. The control data sent to the respective heating modules 10 can be different, whereby the different heating modules 10 can provide different temperatures in the process channel 56 of the brazing apparatus. For example, the heating modules 10 in the preheating zone 58 should not heat the air 50 as strongly as the heating modules 10 in the brazing zone.

Claims

1. A heating module (10) of a brazing device (20), characterized in that: The heating module (10) comprises: Motor (12); a fan impeller drivable by the motor (12); a module controller (30); and Heating element (14), wherein the module controller (30) is arranged in or on the heating module (10) and is arranged in such a way that a control current for controlling and / or regulating the rotational speed of the motor (12) and / or the heating temperature of the heating element (14) is generated in dependence on control data and / or temperature data; and The module controller (30) has a communication interface (42) which is configured such that it receives the control data and / or temperature data from a controller (76) of the soldering device (20).

2. The heating module (10) of the brazing device (20) according to claim 1, wherein: The heating module (10) further comprises a heating element (14).

3. The heating module (10) of the brazing device (20) according to claim 1 or 2, wherein: The module controller (30) is configured such that status data of the heating module (10) are provided to the controller (76) via the communication interface (42).

4. The heating module (10) of the brazing device (20) according to claim 1 or 2, wherein: The communication interface (42) is designed to receive (46) or send (44) the control data, temperature data and / or status data via a bus system (74) having the controller (76).

5. The heating module (10) of the brazing device (20) according to claim 1 or 2, wherein: The temperature data are provided at at least one input (54) by at least one temperature sensor (48), wherein the temperature sensor is arranged in or on the heating module (10).

6. The heating module (10) of the brazing device (20) according to claim 1 or 2, wherein: The module controller (30) has a current connection (38) for an AC voltage, wherein the AC voltage has a voltage in the range of 110V to 420V.

7. The heating module (10) of the brazing device (20) according to claim 6, wherein: The module controller (30) has at least one power electronic device (82) which is configured to provide the control current in dependence on the AC voltage.

8. The heating module (10) of the brazing device (20) according to claim 6, wherein: The module controller (30) has at least one voltage converter (80) which is configured to convert a supply voltage for the module controller (30) based on the AC voltage.

9. A module controller (30) for a heating module (10) of a brazing device (20) according to any one of claims 1 to 8, characterized in that: The module controller (30) comprises: at least one communication interface (42); A power supply input terminal for connecting to a power supply line (40) with an AC voltage; A connection piece for a temperature sensor (48); Power electronics (82) for providing a control current; An output terminal for controlling current of the motor (12); An output terminal for controlling current of a heating element (14); Therein, the communication interface (42) is configured to receive (46) the control data and / or the temperature data and / or to send (44) the status data via a bus system (74).

10. A brazing device (20) comprising a preheating zone (58) and / or a brazing zone (60), wherein: A heating module (10) of a soldering device (20) according to any one of claims 1 to 8 is arranged in or on the soldering zone (60) and / or in or on the preheating zone (58).

11. The brazing device (20) according to claim 10, wherein: At least one controller (76) is provided for the at least one heating module (10).

12. The brazing device (20) according to claim 10, wherein: A connecting load for conducting an alternating voltage is provided, and the connecting load is electrically connected to the heating module (10).

13. The brazing device (20) according to any one of claims 10 to 12, wherein: The brazing apparatus (20) has a controller (76) which is arranged to communicate with the module controller (30).

14. A controller (76) for controlling a brazing device (20) according to any one of claims 10 to 13, characterized in that: The controller (76) is configured to communicate with a heating module (10) of at least one brazing device (20) according to any one of claims 1 to 8 and / or with a module controller (30) according to claim 9.

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