Heating circuit and welding equipment
By installing a current monitoring system with current transformers and logic processing units in the welding equipment, the product quality problem caused by heating wire damage was solved, and real-time monitoring of the heating wire's operation was achieved, ensuring the reliability of the welding equipment and the quality of the products.
Patent Information
- Application Number
- CN202520481807.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-19
AI Technical Summary
In lead-free soldering processes in the manufacturing industry, product quality issues arise when heating wires are damaged due to material or lifespan problems. Existing technologies lack effective current monitoring methods, making it impossible to detect damage in a timely manner.
A current transformer is installed on the power supply wire of the heating wire. The current data is monitored in real time through the logic processing unit and storage unit, and the data is transmitted to the monitoring host to realize timely control of the operation of the heating wire.
The current monitoring system can detect heating wire damage in a timely manner, avoiding product quality problems caused by insufficient heating, thus improving the reliability of welding equipment and product quality.
Smart Images
Figure CN223946984U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to welding equipment technical field especially, it relates to a kind of heating circuit and welding equipment. BACKGROUND
[0002] Manufacturing industry field lead-free welding container needs to be heated by heat conduction, heating wire will be damaged due to material or life problem in heating process, if the problem of heating wire damage cannot be found in time, the product of equipment production will exist great quality problem.
[0003] Therefore, a kind of technical scheme is needed to install current monitoring in heating component in selected welding, reflow soldering, wave soldering and other welding equipment, to monitor the heating condition of heating wire in time. UTILITY MODEL CONTENT
[0004] To solve the above technical problems, the utility model provides a kind of heating circuit and welding equipment.
[0005] The utility model provides a kind of heating circuit for welding equipment, including current transformer, heating wire, logic processing unit, storage unit, monitoring host computer;
[0006] The detection part of the current transformer is arranged in the power supply conductor where the heating wire is located, and the data end is electrically connected with the first data end of the logic processing unit;
[0007] The second data end of the logic processing unit is electrically connected with the storage unit, and the communication end is electrically connected with the communication end of the monitoring host computer;
[0008] Among them, the current transformer is used to detect the current of the power supply conductor, and the detection data is transmitted to the logic processing unit;
[0009] The logic processing unit receives the detection data and stores it in the storage unit to obtain a detection data set;
[0010] The monitoring host computer reads and displays the detection data set stored in the storage unit through the logic processing unit.
[0011] In a possible implementation, the working voltage end of the logic processing unit and the storage unit is electrically connected with a voltage reduction chip.
[0012] In a possible implementation, RS-485 communication is used between the monitoring host computer and the logic processing unit.
[0013] In a possible implementation, the detection part of the current transformer is an annular hole for the power supply conductor to pass through.
[0014] In a possible implementation, the power supply wire is provided with at least one current transformer.
[0015] In a possible implementation, the current transformer is a Hall current sensor.
[0016] In a possible implementation, a thyristor is connected in series on the power supply wire.
[0017] In a possible implementation, a switch is connected in series on the power supply wire.
[0018] In a possible implementation, a fuse is connected in series on the power supply wire.
[0019] The utility model also provides a welding equipment, is provided with the heating circuit as above.
[0020] The technical scheme provided by the utility model has at least the following beneficial effects:
[0021] By arranging the current transformer on the power supply wire where the heating wire is located, and transmitting the detection data of the current transformer to the logic processing unit and storing in the storage unit, the corresponding detection data can be obtained by the monitoring host in time, and the running condition of the heating wire can be grasped in time, so that the problem of heating wire damage can be excluded in time, and the problem of product quality caused by insufficient heating can be avoided. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 The principle diagram of the first heating circuit provided by the utility model embodiment;
[0023] Figure 2 The principle diagram of the second heating circuit provided by the utility model embodiment;
[0024] Figure 3 The principle diagram of the third heating circuit provided by the utility model embodiment;
[0025] Figure 4 The application schematic diagram of the current transformer provided by the utility model embodiment;
[0026] Figure 5 The structure schematic diagram of the current transformer provided by the utility model embodiment. DETAILED DESCRIPTION
[0027] In order to deepen the understanding of the utility model, the utility model will be further described in detail in combination with the drawings and the embodiment, and the embodiment is only used for explaining the utility model, and does not constitute the limitation to the protection scope of the utility model.
[0028] Please refer to Figures 1 to 5The utility model provides a kind of heating circuit for welding equipment, including current transformer TA, heating wire E, logic processing unit, storage unit, monitoring host computer;
[0029] The detection part of the current transformer TA is arranged on the power supply conductor where the heating wire E is located, and the data terminal thereof is electrically connected with the first data terminal of the logic processing unit.
[0030] The second data terminal of the logic processing unit is electrically connected with the storage unit, and the communication terminal thereof is electrically connected with the communication terminal of the monitoring host computer.
[0031] The current transformer TA is used to detect the current of the power supply conductor and transmit the detection data to the logic processing unit.
[0032] The logic processing unit receives the detection data and stores it in the storage unit to obtain a detection data set.
[0033] The monitoring host computer reads and displays the detection data set stored in the storage unit through the logic processing unit.
[0034] In this embodiment, the welding equipment is a soldering, reflow soldering or wave soldering equipment provided with a heating component. The current transformer is a conventional sensor for detecting current. The heating wire E is a conventional model. The logic processing unit can be a conventional single-chip microcomputer. The storage unit can be a conventional storage chip. The monitoring host computer can be a conventional computer. Figure 1 In a specific implementation, one end of the heating wire E is connected with the neutral line N, and the other end is connected with the live line L in sequence through the switch K, the silicon-controlled rectifier S and the fuse F. The current transformer TA is sleeved on the power supply conductor of the heating wire E and transmits the detection data to the logic processing unit. The logic processing unit and the storage unit work under a working voltage of 5V. The logic processing unit saves the real-time detection data of the current transformer TA in the storage unit. When the monitoring host computer needs to retrieve the detection data, it sends an instruction to the logic processing unit. The logic processing unit reads the detection data set from the storage unit and forwards it to the monitoring host computer. The monitoring host computer can directly display the corresponding detection data, or save the received detection data set in the local monitoring host computer and analyze and process the detection data set. The specific design can be made according to actual needs.
[0035] In a possible implementation, the working voltage terminal of the logic processing unit and the storage unit is electrically connected with a voltage reduction chip.
[0036] In this embodiment, the voltage reduction chip is of a conventional model. In specific implementation, the voltage reduction chip can convert 24V voltage into 5V voltage and provide 5V voltage to the storage unit and the logic processing unit as their respective working voltages.
[0037] In a possible implementation, RS-485 communication is adopted between the monitoring host and the logic processing unit.
[0038] In a possible implementation, the detection part of the current transformer TA is a ring-shaped hole for the power supply wire to pass through. Figure 5
[0039] In a possible implementation, the power supply wire passes through at least one current transformer TA.
[0040] In this embodiment, the power supply wire can pass through one current transformer TA (such as Figure 1 ), or pass through multiple current transformers TA (such as Figure 2 and Figure 4 ). When multiple current transformers TA are passed through, it is equivalent to multiple current transformers TA monitoring the same power supply wire at the same time. Even if an individual current transformer TA fails, it does not affect the monitoring of other current transformers TA, which can effectively improve the monitoring reliability and prevent the monitoring of the power supply wire from being affected by the failure of an individual current transformer TA. It should be noted that Figure 4 , the current transformer TA, the logic processing unit, and the storage unit are all arranged on the same PCB board, the current transformer TA has multiple current transformers, and the PCB board is provided with an RS485 interface, and the logic processing unit is connected with the monitoring host through the RS485 interface.
[0041] In a possible implementation, the current transformer TA is a Hall current sensor.
[0042] In this embodiment, the Hall current sensor adopts a conventional model.
[0043] In a possible implementation, a silicon controlled rectifier S is connected in series on the power supply wire.
[0044] In this embodiment, the silicon controlled rectifier S adopts a conventional model, and its control electrode can control the on-off of the two main electrodes according to the received signal.
[0045] In a possible implementation, a switch K is connected in series on the power supply wire.
[0046] In this embodiment, the switch K adopts a conventional model.
[0047] In a possible implementation, a fuse F is connected in series on the power supply wire.
[0048] In this embodiment, the fuse F adopts a conventional model.
[0049] In a specific embodiment, as Figure 3 The heating circuit is applied to a soldering pot of the soldering equipment, and the heating wires E are divided into E1 heating wires for heating the bottom of the soldering pot and E21, E22 heating wires and E31, E32 heating wires for heating the side walls of the soldering pot. The E21, E22 heating wires can heat a pair of opposite side walls of the soldering pot respectively, and the E31, E32 heating wires can heat another pair of opposite side walls of the soldering pot respectively. The E1 heating wires are provided with electric energy required for electric heating by the first-phase live wire L1. The E21, E22 heating wires are provided with electric energy required for electric heating by the second-phase live wire L2. The E31, E32 heating wires are provided with electric energy required for electric heating by the third-phase live wire L3. The current transformers TA are divided into TA1, TA21, TA22, TA31 and TA32 current transformers. The TA1 current transformer monitors the current of the line in which the E1 heating wire is arranged and transmits detection data to the J1 data interface of the logic processing unit. The TA21 current transformer monitors the current of the line in which the E21 heating wire is arranged and transmits detection data to the J21 data interface of the logic processing unit. The TA22 current transformer monitors the current of the line in which the E22 heating wire is arranged and transmits detection data to the J22 data interface of the logic processing unit. The TA31 current transformer monitors the current of the line in which the E31 heating wire is arranged and transmits detection data to the J31 data interface of the logic processing unit. The TA32 current transformer monitors the current of the line in which the E32 heating wire is arranged and transmits detection data to the J32 data interface of the logic processing unit. The switches K are divided into K1, K2 and K3 switches. The K1 switch can control the on-off of the line in which the E21 heating wire is arranged in a manual mode. The K2 switch can control the on-off of the lines in which the E21 and E22 heating wires are arranged in a manual mode. The K3 switch can control the on-off of the lines in which the E31 and E32 heating wires are arranged in a manual mode. The thyristors S are divided into S1, S2 and S3 thyristors. The S1 thyristor can control the on-off of the line in which the E21 heating wire is arranged based on a control signal. The S2 thyristor can control the on-off of the lines in which the E21 and E22 heating wires are arranged based on a control signal. The S3 thyristor can control the on-off of the lines in which the E31 and E32 heating wires are arranged based on a control signal. The fuses F are divided into F1 and F2 fuses. The F1 fuse is used for overcurrent protection of the line in which the E21 heating wire is arranged. The F2 fuse is a pair of fuses and is used for overcurrent protection of the lines in which the E21, E22 and E31, E32 heating wires are arranged.
[0050] The utility model discloses still provide a kind of soldering equipment, is provided with the heating circuit as described above.
[0051] In the embodiment, the soldering equipment is a conventional selective soldering, reflow soldering, wave soldering and the like, including a soldering module and a heating module, and the heating function of the heating module is completed by the heating circuit. The heating wires E in the heating circuit act on the soldering pot.
[0052] The above embodiments should not limit the utility model in any way, and any technical solution obtained by equivalent replacement or equivalent conversion falls within the protection scope of the utility model.
Claims
1. A heating circuit for a welding apparatus, characterized by, The heating circuit comprises a current transformer, a heating wire, a logic processing unit, a storage unit, and a monitoring host; The detection part of the current transformer is arranged on the power supply wire where the heating wire is located, and the data end of the detection part is electrically connected with the first data end of the logic processing unit; The second data end of the logic processing unit is electrically connected with the storage unit, and the communication end of the logic processing unit is electrically connected with the communication end of the monitoring host; The current transformer is used to detect the current of the power supply wire and transmit the detection data to the logic processing unit; The logic processing unit receives the detection data and stores the detection data in the storage unit to obtain a detection data set; The monitoring host reads and displays the detection data set stored in the storage unit through the logic processing unit.
2. The heating circuit according to claim 1, characterized in that, The working voltage end of the logic processing unit and the storage unit is electrically connected with a voltage reduction chip.
3. The heating circuit of claim 1, wherein, RS-485 communication is adopted between the monitoring host and the logic processing unit.
4. The heating circuit of claim 1, wherein, The detection part of the current transformer is a ring-shaped hole for the power supply wire to pass through.
5. The heating circuit of claim 4, wherein, The power supply wire passes through at least one current transformer.
6. The heating circuit of claim 4, wherein, The current transformer is a Hall current sensor.
7. The heating circuit of claim 1, wherein, A thyristor is connected in series on the power supply wire.
8. The heating circuit of claim 1, wherein, A switch is connected in series on the power supply wire.
9. The heating circuit of claim 1, wherein, A fuse is connected in series on the power supply wire.
10. A welding apparatus characterized by comprising: The heating circuit is provided with any one of the heating circuits according to claims 1 to 9.