Fusion pressure apparatus and circuit board welding method based on fusion pressure apparatus

Abstract

The application discloses a melting and pressing device and a circuit board welding method based on the melting and pressing device. The melting and pressing device comprises a working base, a feeding assembly and a melting and pressing assembly. The feeding assembly comprises a bottom plate, a moving guide rail, a loading platform and a platform driving cylinder. The loading platform is movably connected to the moving guide rail along the moving guide rail and is used for loading a melting and pressing object. The melting and pressing assembly comprises a mounting bracket, a heating plate, a pressing heat-conducting plate, a heating plate driving cylinder and a pressing heat-conducting plate driving cylinder. The pressing heat-conducting plate is driven by the pressing heat-conducting plate driving cylinder to melt and press the melting and pressing object loaded on the loading platform moving below the pressing heat-conducting plate. The melting and pressing device can realize that welding points at all parts of a contact surface are heated at the same time, and melting and pressing is synchronously completed without welding at each part, so that the working efficiency is improved, the large-scale assembly line production and processing demand is met, and the welding quality difference at all parts caused by the welding precision is avoided, and the quality inspection of subsequent products is facilitated.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a fusion pressing device and a circuit board welding method based on the fusion pressing device. Background Technology

[0002] In small and medium-sized enterprises in the industry, conventional welding processes, especially circuit board welding, often involve welding the metal strips connecting the traces at each welding point according to the wiring distribution. As a result, this traditional operation method is not only inefficient, but also difficult to meet the needs of large-scale assembly line production and processing.

[0003] Furthermore, the welding process on different parts of the circuit board is done in a specific order, and the welding quality varies greatly depending on the welding precision of the operators or equipment. This is not conducive to the quality control of subsequent products.

[0004] Therefore, it is necessary to provide new technical solutions to address the above problems. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a fusion pressing device and a circuit board welding method based on the fusion pressing device to solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention first provides a melting and pressing device, which includes a working base, a feeding assembly, and a melting and pressing assembly. The feeding assembly includes a base plate, a transfer guide rail, a loading platform, and a platform drive cylinder. The base plate covers the working base, the transfer guide rail is fixed to the working base, and the loading platform is movably connected to the transfer guide rail for loading the object to be melted and pressed. The platform drive cylinder drives the loading platform. The melting and pressing assembly includes a mounting bracket, a heating plate, a pressing heat-conducting plate, a heating plate drive cylinder, and a pressing heat-conducting plate drive cylinder. The heating plate drive cylinder is mounted on the mounting bracket to drive the heating plate to press down against the pressing heat-conducting plate. The pressing heat-conducting plate, driven by the pressing heat-conducting plate drive cylinder, melts and presses the object to be melted and pressed on the loading platform below it.

[0008] Preferably, the feeding assembly is provided with buffer limit seats at both ends of the stroke of the transfer guide rail.

[0009] Preferably, a pressing upper plate is connected to the output shaft of the heating plate driving cylinder, and the pressing assembly further includes a heating plate guide rod. One end of the heating plate guide rod is movably connected to the mounting bracket, and the other end is fixedly connected to the pressing upper plate. A pressing lower plate is connected to the bottom surface of the pressing upper plate.

[0010] Preferably, the lower pressing plate is fixed to the heating plate by heat insulation sheets, and there are multiple heat insulation sheets, which are spaced apart and clamped between the lower pressing plate and the heating plate.

[0011] Preferably, the pressing assembly further includes a heat-conducting plate guide rod, one end of which is movably connected to the mounting bracket, and the other end is fixedly connected to the heat-conducting plate.

[0012] Preferably, the melting and pressing equipment further includes a central control unit, which is used to control the platform drive cylinder, the heating plate drive cylinder, the pressing heat-conducting plate drive cylinder, and the heating plate.

[0013] Preferably, the melting and pressing equipment further includes an assembly cover covering the bottom plate, the assembly cover having a feeding port corresponding to the feeding component, and the assembly cover being equipped with a touch screen, a power switch, a pressure regulating valve, and a temperature controller that are signal-connected to the main control unit.

[0014] Preferably, the front end of the working base is provided with a start button, a vacuum button, and an emergency stop button that are signal-connected to the central control unit.

[0015] Preferably, the main control unit is also signal-connected to a safety light curtain and an alarm. The safety light curtain includes a transmitter and a receiver respectively installed at opposite ends of the feed port, used to monitor objects between the transmitter and receiver, so as to control the shutdown of the melting and pressing equipment through the main control unit. The alarm is installed on the main assembly cover and is used to issue an alarm according to the signal of the safety light curtain controlled by the main control unit.

[0016] The present invention also provides a circuit board welding method based on the above-mentioned melting and pressing equipment, which includes: pre-printing solder on each welding point of the circuit board to be melted and pressed; loading the circuit board onto the loading platform; driving the loading platform along the transfer guide rail to move below the pressing and pressing heat-conducting plate by the platform driving cylinder; driving the heating plate to abut against the pressing and pressing heat-conducting plate by the heating plate driving cylinder; and driving the pressing and pressing heat-conducting plate to melt and press the entire welding point of the circuit board by the pressing and pressing heat-conducting plate heated to a preset temperature by the heating plate.

[0017] The technical solution of this invention provides a heat-conducting plate with a full-surface shape in the melting and pressing equipment to perform synchronous melting and pressing on the object to be melted and pressed. This allows all welding points on the object to be melted and pressed to be welded at the same time, eliminating the need to weld each welding point separately. The work can be completed in one go, which can effectively improve work efficiency. It is especially suitable for the mass production needs of small and medium-sized enterprises. It can also avoid the difference in welding quality caused by the progress of operators or equipment, and meet the quality stability requirements of product quality control. Attached Figure Description

[0018] Figure 1 This is a perspective view of the melting and pressing equipment provided in an embodiment of the present invention;

[0019] Figure 2 This is a structural exploded view of the melting and pressing equipment;

[0020] Figure 3 This is an exploded view of the feeding assembly in the melting and pressing equipment;

[0021] Figure 4 This is an exploded view of the melting and pressing components in the melting and pressing equipment.

[0022] The reference numerals in the above figures are as follows:

[0023] 1. Operating base, 11. Start button, 12. Vacuum button, 13. Emergency stop button, 2. Loading assembly, 21. Base plate, 22. Transfer guide rail, 23. Loading platform, 24. Platform drive cylinder, 25. Buffer limit seat, 3. Melting assembly, 31. Mounting bracket, 311. Support column, 32. Heating plate, 321. Heating plate guide rod, 33. Pressing heat-conducting plate, 34. Heating plate drive cylinder, 35. Pressing heat-conducting plate drive cylinder, 351. Pressing heat-conducting plate guide rod, 36. Pressing upper plate, 37. Pressing lower plate, 371. Heat insulation sheet, 4. Assembly cover, 40. Loading port, 41. Touch screen, 42. Temperature controller, 43. Power switch, 44. Pressure regulating valve, 45. Transmitter, 46. Receiver, 47. Alarm. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present invention shown in and described with reference to the drawings are merely exemplary, and the present invention is not limited to these embodiments.

[0025] It should also be noted that, in order to avoid obscuring the invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the invention are shown in the accompanying drawings, while other details that are not closely related are omitted.

[0026] Combination Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a melting and pressing device, which includes a working base 1, a feeding component 2, and a melting and pressing component 3.

[0027] Reference Figure 3As shown, the loading assembly 2 includes a base plate 21, a transfer guide rail 22, a loading platform 23, and a platform drive cylinder 24. The base plate 21 is covered on the working base 1, the transfer guide rail 22 is fixed on the working base 1, and the loading platform 23 is movably connected to the transfer guide rail 22 for loading the object to be melted and pressed. The platform drive cylinder 24 is used to drive the loading platform 23.

[0028] like Figure 4 As shown, the melting and pressing assembly 3 includes a mounting bracket 31, a heating plate 32, a pressing and heat-conducting plate 33, a heating plate driving cylinder 34, and a pressing and heat-conducting plate driving cylinder 35. The heating plate driving cylinder 34 is mounted on the mounting bracket 31 to drive the heating plate 32 to press down against the pressing and heat-conducting plate 33. The pressing and heat-conducting plate 33, driven by the pressing and heat-conducting plate driving cylinder 35, melts and presses the object to be melted and pressed that is moved to the loading platform 23 below it.

[0029] When the above-mentioned melting and pressing equipment provided in this embodiment of the invention is applied to welding operations such as circuit boards, the circuit board to be melted and pressed can first be placed on the fixture set on the loading platform 23 and fixed. Then, the loading platform 23 is driven by the platform driving cylinder 24 to move along the transfer guide rail 22 to the preset melting and pressing position below the corresponding melting and pressing component 3. Next, the heating plate driving cylinder 34 drives the heating plate 32 to move and abut against the pressing heat-conducting plate 33. The heating plate 32 is heated to the preset temperature and the heat is transferred to the pressing heat-conducting plate 33 to reach the temperature required for melting and pressing. The pressing heat-conducting plate 33 will melt and press the object to be melted and pressed under the drive of the pressing heat-conducting plate driving cylinder 35. Since the heat-conducting plate 33 for pressing the object to be melted is a high-temperature planar body, it can simultaneously heat all welding points on the contact surface of the object to be melted corresponding to the heat-conducting plate 33, and complete the melting and pressing synchronously. This can improve work efficiency, eliminate the need to complete welding point by point, meet the needs of large-scale assembly line production and processing, and avoid the large difference in welding quality on the circuit board caused by the welding accuracy of operators or equipment each time the welding points are processed, which is beneficial to the quality control of subsequent products.

[0030] Firstly, in the feeding assembly 2, buffer limit seats 25 are respectively provided at both ends of the stroke of the transfer guide rail 22. One end is the feeding position for placing the object to be melted and pressed onto the loading platform 23, which is far away from the melting and pressing assembly 3. The other end is the melting and pressing position directly below the heat-conducting plate 33. The buffer limit seats 25 limit the stroke of the transfer guide rail 22 to control the loading platform 23 to stop at the feeding position or the melting and pressing position.

[0031] The mounting bracket 31 is supported and fixed by four support columns 311 fixed on the base plate 21. The four support columns 311 are located at the four corners of the mounting bracket 31. The loading platform 23 has a double-layer structure. The bottom loading platform 23 is connected to multiple sliders set on the transfer guide rail 22.

[0032] In the pressing assembly 3, a pressing upper plate 36 is connected to the output shaft of the heating plate driving cylinder 34. The pressing assembly 3 also includes a heating plate guide rod 321, one end of which is movably connected to the mounting bracket 31, and the other end is fixedly connected to the pressing upper plate 36. A pressing lower plate 37 is connected to the bottom surface of the pressing upper plate 36. Preferably, there are four heating plate guide rods 321, which are respectively connected to the four corner positions of the pressing upper plate 36, so as to stably guide the pressing upper plate 36 to move up and down.

[0033] Furthermore, the lower pressing plate 37 is fixed to the heating plate 32 by heat insulation sheets 371. Multiple heat insulation sheets 371 are spaced apart and clamped between the lower pressing plate 37 and the heating plate 32. The spaced heat insulation sheets 371 prevent the high-temperature heating plate 32 from directly contacting the lower pressing plate 37 and the upper pressing plate 36, thus avoiding damage.

[0034] Specifically, the pressing assembly 3 further includes a heat-conducting plate guide rod 351. One end of the heat-conducting plate guide rod 351 is movably connected to the mounting bracket 31, and the other end is fixedly connected to the heat-conducting plate 33. Similarly, the number of heat-conducting plate guide rods 351 is preferably four, respectively connected to the four corner positions of the heat-conducting plate 33, so as to stably guide the heat-conducting plate 33 to move up and down.

[0035] In this embodiment, to achieve automated operation, the melting and pressing equipment requires corresponding control units to regulate the operation of each component. Therefore, the melting and pressing equipment also includes a central control unit, which controls the platform drive cylinder 24, the heating plate drive cylinder 34, the pressing heat-conducting plate drive cylinder 35, and the heating plate 32. Under the control of the central control unit, the platform drive cylinder 24, the heating plate drive cylinder 34, and the pressing heat-conducting plate drive cylinder 35 will drive their respective components accordingly, while the heating plate 32 will start or stop heating to increase its temperature under the control of the central control unit.

[0036] Furthermore, the melting and pressing equipment also includes a general assembly cover 4 covering the bottom plate 21. The general assembly cover 4 has a feeding port 40 corresponding to the feeding component 2. The melting and pressing component 3 is located below the general assembly cover 4. The general assembly cover 4 and the bottom plate 21 form a receiving space to accommodate the entire melting and pressing component 3, and also play a dustproof role. The feeding position of the feeding component 2 is located outside the general assembly cover 4, while the melting and pressing position is located inside the general assembly cover 4.

[0037] To meet the various functions of automated operation, the assembly cover 4 is equipped with a touch screen 41, a temperature controller 42, a power switch 43, and a pressure regulating valve 44, all connected to the main control unit. The touch screen 41 can be used to display various parameters of the melting and pressing equipment and perform corresponding operations. The power switch 43 controls the power supply to the entire machine. The pressure regulating valve 44 controls the driving pressure. The temperature controller 42 regulates the temperature of the heating plate 32. The temperature controller 42 or the touch screen 41 can also integrate a pressure gauge to display the current air pressure.

[0038] To facilitate operation by the workers, the front end of the work base 1 is equipped with a start button 11, a vacuum button 12, and an emergency stop button 13, all of which are connected to the main control unit. The start button 11 controls the normal start-up of the melting and pressing equipment, while the emergency stop button 13 controls the melting and pressing equipment to immediately stop in case of an emergency.

[0039] For example, the central control unit is also signal-connected to a safety light curtain and an alarm 47. The safety light curtain includes a transmitter 45 and a receiver 46 respectively installed at opposite ends of the feed inlet 40, used to monitor objects between the transmitter 45 and the receiver 46, so as to control the shutdown of the melting and pressing equipment through the central control unit. The alarm 47 is installed on the assembly cover 4, used to issue an alarm through the control unit based on the signal from the safety light curtain. When the safety light curtain detects an object passing through the feed inlet 40 and entering the interior of the assembly cover 4, it will send a feedback signal to the central control unit, which will control all components to stop immediately to prevent harm to the personal safety of the operators. It can play a good role in protecting the production safety of the equipment and preventing mistakes. At the same time, when the above situation is detected or a fault is found in the equipment itself through self-testing, the central control unit can control the alarm 47 to sound a buzzer to warn the operators.

[0040] In addition, LED lights are installed inside the assembly cover 4 to facilitate the observation of the work situation by the operators, so as to keep the working environment bright and visible.

[0041] This invention also provides a circuit board welding method based on the above-mentioned melting and pressing equipment, which includes:

[0042] Solder is pre-printed at each solder joint on the circuit board to be melted and pressed.

[0043] Load the circuit board onto loading platform 23;

[0044] The platform drive cylinder 24 drives the loading platform 23 to move along the transfer guide rail 22 to below the pressing heat conduction plate 33;

[0045] The heating plate driving cylinder 34 drives the heating plate 32 to abut against the pressing heat-conducting plate 33. The pressing heat-conducting plate driving cylinder 34 drives the pressing heat-conducting plate 33, which has been heated to a preset temperature by the heating plate 32, to melt and press the overall solder joints of the circuit board.

[0046] After the above-mentioned melting and pressing operation steps are completed, the pressing heat-conducting plate 33 and the heating plate 32 rise back to their original positions before the operation, the loading platform 23 retracts to the loading position, the melting and pressing equipment is put back into standby mode, and after the operator removes the object to be melted and pressed from the loading platform 23, they can prepare to reload the object to be melted and pressed for the next round of melting and pressing operation.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A melting and pressing device, characterized in that, include: Operating base; The loading assembly includes a base plate, a transfer guide rail, a loading platform, and a platform drive cylinder. The base plate is placed on the working base, the transfer guide rail is fixed on the working base, and the loading platform is movably connected to the transfer guide rail for loading the object to be melted and pressed. The platform drive cylinder is used to drive the loading platform. The melting and pressing assembly includes a mounting bracket, a heating plate, a pressing and heat-conducting plate, a heating plate driving cylinder, and a pressing and heat-conducting plate driving cylinder. The heating plate driving cylinder is mounted on the mounting bracket to drive the heating plate to press down against the pressing and heat-conducting plate. The pressing and heat-conducting plate, driven by the pressing and heat-conducting plate driving cylinder, melts and presses the object to be melted and pressed on the loading platform below it.

2. The melting and pressing equipment according to claim 1, characterized in that, The feeding assembly is equipped with buffer limit seats at both ends of the travel of the transfer guide rail.

3. The melting and pressing equipment according to claim 1, characterized in that, The output shaft of the heating plate driving cylinder is connected to a pressing upper plate. The melting and pressing assembly also includes a heating plate guide rod. One end of the heating plate guide rod is movably connected to the mounting bracket, and the other end is fixedly connected to the pressing upper plate. The bottom surface of the pressing upper plate is connected to a pressing lower plate.

4. The melting and pressing equipment according to claim 3, characterized in that, The lower pressing plate is fixed to the heating plate by heat insulation sheets. There are multiple heat insulation sheets, which are spaced apart and clamped between the lower pressing plate and the heating plate.

5. The melting and pressing equipment according to claim 3, characterized in that, The pressing assembly also includes a heat-conducting plate guide rod, one end of which is movably connected to the mounting bracket and the other end is fixedly connected to the heat-conducting plate.

6. The melting and pressing equipment according to claim 1, characterized in that, The melting and pressing equipment also includes a central control unit, which is used to control the platform drive cylinder, the heating plate drive cylinder, the pressing heat-conducting plate drive cylinder, and the heating plate.

7. The melting and pressing equipment according to claim 6, characterized in that, The melting and pressing equipment also includes a general assembly cover covering the base plate. The general assembly cover has a feeding port corresponding to the feeding component. The general assembly cover is equipped with a touch screen, a power switch, a pressure regulating valve, and a temperature controller that are connected to the general control unit.

8. The melting and pressing equipment according to claim 6, characterized in that, The front end of the work base is equipped with a start button, a vacuum button, and an emergency stop button that are connected to the main control unit via signals.

9. The melting and pressing equipment according to claim 7, characterized in that, The main control unit is also connected to a safety light curtain and an alarm. The safety light curtain includes a transmitter and a receiver respectively installed at opposite ends of the feed port, used to monitor objects between the transmitter and receiver, so as to control the shutdown of the melting and pressing equipment through the main control unit. The alarm is installed on the main assembly cover and is used to issue an alarm according to the signal of the safety light curtain controlled by the main control unit.

10. A circuit board welding method based on the fusion pressing equipment according to any one of claims 1 to 9, characterized in that, include: Solder is pre-printed at each solder joint on the circuit board to be melted and pressed. Load the circuit board onto the loading platform; The platform-driven cylinder drives the loading platform to move along the transfer guide rail to below the pressing heat-conducting plate; The heating plate driving cylinder drives the heating plate to press against the heat-conducting plate, and the heat-conducting plate driving cylinder drives the heat-conducting plate, which has been heated to a preset temperature by the heating plate, to melt and press the overall solder joints of the circuit board.

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