Soldering iron heating core and internal heating type electric soldering iron

Abstract

The utility model discloses a soldering iron heating core and an internal heating type electric soldering iron. The soldering iron heating core comprises a heating section, an assembling section and a connecting interface section which are connected in sequence. The heating section is provided with an electric heating body which is used for heat energy conversion. The assembly section is provided with a containing cavity, the containing cavity is used for containing a heating core encryption chip, the heating core encryption chip is used for storing encrypted data, and the encrypted data comprises model information, ID information and working parameter information. The connecting interface section is used for electric connection between the electric heating body and the internal heating type electric soldering iron and communication connection between the heating core encryption chip and the internal heating type electric soldering iron. Due to the fact that the heating core encryption chip can store encrypted data, the quality and maintenance of the soldering iron heating core are dynamically tracked and traced by reading and writing the encrypted data, the soldering iron heating core of the internal heating type electric soldering iron can be replaced in time, then the effective working state is kept, the welding failure rate is greatly reduced, and the welding reliability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electric tools, and in particular to a soldering iron heating core and an internally heated electric soldering iron. Background Art

[0002] Soldering irons are essential tools for electronics manufacturing and appliance repair, primarily used to weld components and wires. Internally heated soldering irons, in particular, heat up quickly and don't generate induced currents, making them widely used in automated production lines. However, their heater cores have a short lifespan and poor controllability. Especially in automated production lines with multiple internally heated soldering irons, the lifespan of the heater cores cannot be monitored, requiring replacement only when a heater core is damaged. This damage inevitably reduces production line reliability (heater damage can cause soldering problems in the corresponding production process). To ensure the stability of all soldering irons throughout the production line, not only must damaged heater cores be replaced, but all remaining intact heater cores must also be replaced. (Heater cores within the same batch often have similar lifespans or failure cycles.) This practice inevitably results in wasted heater cores. In addition, since the heating core of the internal heating soldering iron is a consumable, it needs to be replaced regularly. However, when replacing it, it is necessary to ensure that the new heating core is of the same model and type as the original heating core. At present, this can only be confirmed through manual identification, and its reliability cannot be guaranteed. Utility Model Content

[0003] The technical problem to be solved by the present application is how to realize the identification and life monitoring of the heating core of an internally heated electric soldering iron.

[0004] According to the first aspect, an embodiment provides a soldering iron heating core, comprising a heating section, an assembly section, and a connection interface section connected in sequence;

[0005] The heating section is provided with an electric heating element for converting electrical energy into thermal energy when obtaining electrical energy;

[0006] The assembly section is provided with a receiving cavity for receiving a heating core encryption chip; the heating core encryption chip is used to store encrypted data, and the encrypted data includes model information, ID information and working parameter information of the soldering iron heating core;

[0007] The connection interface section is used for the electrical connection between the electric heating element and the internal heating electric soldering iron; the connection interface section is also used for the communication connection between the heating core encryption chip and the internal heating electric soldering iron, so as to read and write the encrypted data.

[0008] In one embodiment, the working parameter information includes working time, working temperature error value and / or working times, wherein the working temperature error value is used to identify the temperature error of the soldering iron heater when it is working; the working time is used to identify the historical length of time that the soldering iron heater maintains the working temperature; and the working times are used to identify the number of times the soldering iron heater is powered on and off.

[0009] In one embodiment, the heating core encryption chip is a single bus communication chip; the connection interface section is provided with an IO connection terminal, and the IO connection terminal is connected to the heating core encryption chip, and is used for the communication connection between the heating core encryption chip and the internal heating soldering iron.

[0010] In one embodiment, the model of the heating core encryption chip is DS28E05R.

[0011] According to the second aspect, an embodiment provides an internally heated electric soldering iron, comprising the soldering iron heating core as described in the first aspect.

[0012] In one embodiment, the internal heating electric soldering iron further includes an electrical connection interface and a handle;

[0013] The electrical connection interface is used for connecting the internal heating electric soldering iron to an external power source and a communication connection line;

[0014] The handle is used to control and hold the internal heating electric soldering iron; the handle is provided with an electric heating core installation interface and a PCB circuit board;

[0015] The electric heating core mounting interface is used to fix and connect the soldering iron heating core; a soldering iron core control circuit is provided on the PCB circuit board, and the soldering iron core control circuit is electrically connected to the soldering iron heating core and the electrical connection interface respectively.

[0016] In one embodiment, the electric heating core installation interface includes a fixing component for fixedly connecting the soldering iron heating core; the fixing component includes a crown spring or a fixing spring.

[0017] In one embodiment, the soldering iron core control circuit includes a patrol and acquisition circuit, and the patrol and acquisition circuit is used to read and write the working parameter information from the heating core encryption chip of the soldering iron heating core;

[0018] The inspection and collection circuit includes an MCU chip, which is communicatively connected to the heating core encryption chip and is used to read and write the heating core encryption chip.

[0019] In one embodiment, the model of the MCU chip is HK32f030.

[0020] In one embodiment, the inspection and acquisition circuit further includes a first transient voltage suppression diode and a second transient voltage suppression diode;

[0021] The positive connection end of the first transient voltage suppression diode is electrically connected to the communication connection line of the heating core encryption chip, and the negative connection end of the first transient voltage suppression diode is used to be connected to a preset working voltage source;

[0022] The negative connection end of the second transient voltage suppression diode is electrically connected to the communication connection line of the heating core encryption chip, and the positive connection end of the second transient voltage suppression diode is grounded;

[0023] The first transient voltage suppression diode and the second transient voltage suppression diode are used as a voltage limiting protection circuit for the communication connection line of the heating core encryption chip.

[0024] According to the soldering iron heater core of the above embodiment, since the heater core encryption chip can store encrypted data, the quality and maintenance of the soldering iron heater core can be dynamically tracked and traced by reading and writing encrypted data, so that the internal heating electric soldering iron can replace the soldering iron heater core in time, thereby maintaining an effective working state, greatly reducing the welding failure rate and improving welding reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a functional block diagram of a soldering iron heating core monitoring system in one embodiment;

[0026] Figure 2 This is a schematic diagram of the structure of a soldering iron heating core in an embodiment;

[0027] Figure 3 A schematic cross-sectional view of an internally heated electric soldering iron according to an embodiment;

[0028] Figure 4 is a partial cross-sectional schematic diagram of a handle in one embodiment;

[0029] Figure 5 Schematic diagram of the circuit connection of the soldering iron core control circuit in one embodiment. DETAILED DESCRIPTION

[0030] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0031] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0032] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0033] The lifespan of the internally heated soldering irons operated by robots on the production line cannot be estimated. Damage can only be determined based on real-time temperature monitoring, and replacement is required only after damage occurs. This significantly impacts the production efficiency of the production line and the reliability of the welding process. In an embodiment of the present application, a soldering iron heater monitoring system is provided that dynamically monitors the operating parameter information of the internally heated soldering iron, thereby estimating the lifespan of the soldering iron heater. This allows the heater to be replaced promptly for each internally heated soldering iron, thereby ensuring the reliability and continuity of the internally heated soldering iron production process.

[0034] Example 1:

[0035] Please refer to Figure 1, is a functional block diagram of a soldering iron heater monitoring system in one embodiment, the soldering iron heater monitoring system includes an inspection unit 1, an operation monitoring unit 2, a replacement prompt unit 3 and an information update unit 4. The inspection unit 1 is used to read the identification information of each internal heating electric soldering iron that starts working. The identification information includes the model information, ID information and working parameter information of the soldering iron heater in the internal heating electric soldering iron. Among them, the model information is used to identify the model of the soldering iron heater, the ID information is used to distinguish the soldering iron heater, and each soldering iron heater corresponds to a unique ID information. The working parameter information includes the working time, the working temperature error value and / or the number of working times. The working temperature error value is used to identify the temperature error of the soldering iron heater when it is working. The working time is used to identify the historical working time of the soldering iron heater, and the number of working times is used to identify the historical number of times the soldering iron heater is powered on and off. The identification information is stored in the heater encryption chip, which is integrated into the internal structure of the soldering iron heater. Each heater encryption chip corresponds to one soldering iron heater. The work monitoring unit 2 is used to record the identification information of each internal heating electric soldering iron, and track and record the working parameter information of each soldering iron heater according to the working state of the internal heating electric soldering iron, that is, track and record the working time and number of working times under the current working state. The replacement prompt unit 3 is used to output the indication information of the internal heating electric soldering iron that needs to replace the soldering iron heater based on the working parameter information of each soldering iron heater tracked and recorded, wherein the life estimate value of the soldering iron heater to be replaced is less than a first preset threshold value, and the life estimate value is used to identify the estimated reference threshold value of the pre-damage of the soldering iron heater. In one embodiment, the first preset threshold value is obtained based on the life test of the soldering iron heaters of the same type, the same production batch and the same storage environment. The information update unit 4 is used to write the tracked and recorded working parameter information of each soldering iron heater into the encryption chip of the soldering iron heater when the internal heating electric soldering iron stops working, so as to update the working parameter information of each soldering iron heater.

[0036] Due to the differences in the working environment (ambient temperature, humidity and pressure) and working mode (whether it is subjected to external force) of the internal heating electric soldering iron, the life evaluation conditions of the soldering iron heater are also different. In one embodiment, the life estimation value of the soldering iron heater is set based on the historical working time of the soldering iron heater, and its working time is used to identify the historical time for each soldering iron heater to maintain the working temperature. In one embodiment, the life estimation value of the soldering iron heater is set based on the historical working times of the soldering iron heater, and the working times are used to identify the number of times the soldering iron heater is powered on and off. In one embodiment, the working parameter information also includes the expansion times. The life estimation value of the soldering iron heater is set based on the historical expansion times of the soldering iron heater, and the expansion times are used to identify the number of times the temperature of the soldering iron heater exceeds a first preset value and then falls below a second preset value, wherein the first preset value is greater than the second preset value. The estimation of the life estimation value based on the expansion times is based on the fact that when the soldering iron heater changes beyond the preset temperature range, there will be expansion changes, and the number of such expansion changes is also an important reference indicator affecting the life of the soldering iron heater. In one embodiment, the above three lifespan estimation methods are comprehensively considered, and the minimum value among them is taken as the final lifespan estimation value.

[0037] Example 2:

[0038] The soldering iron heating core monitoring system needs to establish a communication connection with the soldering iron heating core in order to trace and track the quality and maintenance of the soldering iron heating core. In the embodiment of the present application, the heating core encryption chip is integrated into the internal structure of the soldering iron heating core. Please refer to Figure 2 , is a structural diagram of a soldering iron heating core in an embodiment, the soldering iron heating core includes a heating section 11, an assembly section 12 and a connection interface section 13 connected in sequence. The heating section 11 is used to convert electrical energy into thermal energy when obtaining electrical energy. The assembly section 12 is a cylinder, and a accommodating cavity is provided in the cylinder, and the accommodating cavity is used to accommodate the heating core encryption chip 14. The connection interface section 13 is used to adapt and connect with the electric heating core mounting interface of the internal heating electric soldering iron for electrical connection with the internal heating electric soldering iron. Among them, an IO connection terminal 15 is provided in the connection interface section 13, which is used for communication connection between the heating core encryption chip 14 and the internal heating electric soldering iron.

[0039] Please refer to Figure 3 and Figure 4, respectively, are a cross-sectional schematic diagram of an internally heated soldering iron and a partial cross-sectional schematic diagram of a handle in one embodiment. The soldering iron heater monitoring system in Example 1 also includes an internally heated soldering iron 20, the interior of which is adapted to connect to the soldering iron heater. The internally heated soldering iron 20 includes an electrical connection interface 21 and a handle 22. The electrical connection interface 21 is used for connecting to an external power source and communication cables. The handle 22 is used to operate the internally heated soldering iron. The handle 22 includes a heater installation interface 23 and a PCB circuit board 31. The heater installation interface 23 is used to secure and connect the soldering iron heater and includes an IO interface 32 and a fixing assembly 33. The PCB circuit board 31 is connected to the connection terminal 15 via the IO interface 32 to enable communication with the heater encryption chip 14. The fixing assembly 33 secures the soldering iron heater via multiple crown springs. The PCB circuit board includes a soldering iron heater control circuit, which is electrically connected to the soldering iron heater and the electrical connection interface 21.

[0040] Please refer to Figure 5 , is a circuit connection diagram of a soldering iron core control circuit in an embodiment. The soldering iron core control circuit includes a patrol acquisition circuit, which is used to read and write working parameter information from the heating core encryption chip U1 of the soldering iron heating core 10. The patrol acquisition circuit includes an MCU chip U2, and the MCU chip U2 is communicatively connected to the heating core encryption chip U1 through an IO interface, and is used to perform read and write operations on the heating core encryption chip U1. In one embodiment, the patrol acquisition circuit also includes a temperature sensor signal connection line, which is connected between the temperature sensor output terminal OUT of the soldering iron heating core 10 and the handle connection interface to transmit temperature monitoring electrical signals. In one embodiment, the patrol acquisition circuit also includes an electric energy transmission line, which is connected between the heating power input terminal +IN of the soldering iron heating core 10 and the handle connection interface to transmit external electric energy to the soldering iron heating core 10. In one embodiment, the model of the MCU chip U2 is HK32F030. In one embodiment, the model of the heating core encryption chip U1 is DS28E05R, which has a 112-byte EEPROM memory and can store more data, so it can be compatible with more types of soldering iron heating cores. Since the heating core encryption chip U1 is an encryption chip and has encryption characteristics, it can also protect its built-in data from being illegally tampered with.

[0041] In one embodiment, the inspection and data collection circuit further includes a first resistor R1, a second resistor R2, a third resistor R3, a switch Q1, a first transient voltage suppressor diode TVS1, and a second transient voltage suppressor diode TVS2. The first resistor R1, the second resistor R2, the third resistor R3, and the switch Q1 serve as the peripheral operating circuit for the MCU chip U2, while the first transient voltage suppressor diode TVS1 and the second transient voltage suppressor diode TVS2 serve as a voltage-limiting protection circuit for the I / O interface.

[0042] In this embodiment, the product model, product serial number, calibrated temperature error data, and operating time of the soldering iron heater can be written into a single-bus encryption chip (heating core encryption chip U1). When needed, these data are read to identify the type of soldering iron heater used, and the appropriate control parameters are loaded and the calibrated temperature error is used to correct the actual temperature read, so that the error does not exceed the range specified by the product after the soldering iron heater is replaced without calibration. Since different products are loaded with different control parameters, the entire series of products can achieve the best control effect.

[0043] The soldering iron heating core disclosed in the embodiment of the present application includes a heating section, an assembly section and a connection interface section connected in sequence. The heating section is provided with an electric heating element, which is used for heat energy conversion. The assembly section is provided with a accommodating cavity, which is used to accommodate a heating core encryption chip, which is used to store encrypted data, including model information, ID information and working parameter information. The connection interface section is used for the electrical connection between the electric heating element and the internal heating electric soldering iron, and the communication connection between the heating core encryption chip and the internal heating electric soldering iron. Since the heating core encryption chip can store encrypted data, the quality and maintenance of the soldering iron heating core can be dynamically tracked and traced by reading and writing encrypted data, so that the internal heating electric soldering iron can replace the soldering iron heating core in time, thereby maintaining an effective working state, greatly reducing the welding failure rate and improving welding reliability.

[0044] Furthermore, the encrypted data can also save more control parameter data such as operating temperature error values, which greatly reduces the debugging work of the controller software. Different control parameters can be loaded through these control information to achieve the optimal control effect as quickly as possible.

[0045] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For those skilled in the art of the present application, based on the concept of the present application, they can also make some simple deductions, modifications or substitutions.

Claims

1. A soldering iron heating core, characterized in that: It includes a heating section, an assembly section and a connection interface section connected in sequence; The heating section is provided with an electric heating element for converting electrical energy into thermal energy when obtaining electrical energy; The assembly section is provided with a receiving cavity for receiving a heating core encryption chip; the heating core encryption chip is used to store encrypted data, and the encrypted data includes model information, ID information and working parameter information of the soldering iron heating core; The connection interface section is used for the electrical connection between the electric heating element and the internal heating electric soldering iron; the connection interface section is also used for the communication connection between the heating core encryption chip and the internal heating electric soldering iron, so as to read and write the encrypted data.

2. The soldering iron heating element according to claim 1, characterized in that: The working parameter information includes working time, working temperature error value and / or working times, the working temperature error value is used to identify the temperature error of the soldering iron heater when it is working; the working time is used to identify the historical length of time the soldering iron heater maintains the working temperature; the working times is used to identify the number of times the soldering iron heater is powered on and off.

3. The soldering iron heating element according to claim 2, wherein: The heating core encryption chip is a single bus communication chip; the connection interface section is provided with an IO connection terminal, and the IO connection terminal is connected to the heating core encryption chip, and is used for the communication connection between the heating core encryption chip and the internal heating soldering iron.

4. The soldering iron heating element according to claim 3, characterized in that: The model of the heating core encryption chip is DS28E05R.

5. An internal heating electric soldering iron, characterized in that: The invention comprises the soldering iron heating core as claimed in any one of claims 1 to 4.

6. The internal heating electric soldering iron according to claim 5, characterized in that: Also includes an electrical connection interface and a handle; The electrical connection interface is used for connecting the internal heating electric soldering iron to an external power source and a communication connection line; The handle is used to control and hold the internal heating electric soldering iron; the handle is provided with an electric heating core installation interface and a PCB circuit board; The electric heating core mounting interface is used to fix and connect the soldering iron heating core; a soldering iron core control circuit is provided on the PCB circuit board, and the soldering iron core control circuit is electrically connected to the soldering iron heating core and the electrical connection interface respectively.

7. The internal heating electric soldering iron according to claim 6, wherein: The electric heating core installation interface includes a fixing component for fixedly connecting the soldering iron heating core; the fixing component includes a crown spring or a fixing spring.

8. The internal heating electric soldering iron according to claim 6, wherein: The soldering iron core control circuit includes a patrol and acquisition circuit, which is used to read and write the working parameter information from the heating core encryption chip of the soldering iron heating core; The inspection and collection circuit includes an MCU chip, which is communicatively connected to the heating core encryption chip and is used to read and write the heating core encryption chip.

9. The internal heating electric soldering iron according to claim 8, characterized in that: The model of the MCU chip is HK32f030.

10. The internal heating electric soldering iron according to claim 8, wherein: The inspection and acquisition circuit further includes a first transient voltage suppression diode and a second transient voltage suppression diode; The positive connection end of the first transient voltage suppression diode is electrically connected to the communication connection line of the heating core encryption chip, and the negative connection end of the first transient voltage suppression diode is used to be connected to a preset working voltage source; The negative connection end of the second transient voltage suppression diode is electrically connected to the communication connection line of the heating core encryption chip, and the positive connection end of the second transient voltage suppression diode is grounded; The first transient voltage suppression diode and the second transient voltage suppression diode are used as a voltage limiting protection circuit for the communication connection line of the heating core encryption chip.

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