Thermistor automatic welding integrated system

Abstract

The present application relates to the technical field of welding equipment, and in particular to an integrated system for automatic welding of thermistors, including a fixed platform and a material plate cutting mechanism located on one side of a feeding track, the material plate cutting mechanism is used to cut and grab the resistor material plate, and a first transfer module is provided between the material plate cutting mechanism and the feeding track; the welding platform is used to fix the PCB board and the resistor, and the welding mechanism is used to weld the resistor on the PCB board; the first transfer module is used to place the PCB board on the welding platform; the resistance test module is used to perform resistance test on the PCB board, and the second transfer module is used to move the PCB board to the defective product track; the cleaning tool and the cleaning box are located on one side of the feeding track, and a third transfer module is provided between the cleaning tool and the feeding track, and the third transfer module is used to move the PCB board to the cleaning tool. The present application can improve production efficiency, ensure product quality, reduce manual intervention, and reduce production costs.

Description

Technical Field

[0001] The present application relates to the technical field of welding equipment, and in particular to an integrated thermistor automatic welding system. Background Art

[0002] With the rapid development of electronic products, the integration and complexity of circuit boards have gradually increased, which has put forward higher requirements on the installation accuracy and efficiency of electronic components. As an important temperature sensing element, NTC thermistors are widely used in many fields such as temperature control and power management. In the production process, accurately and firmly soldering NTC thermistors to printed circuit boards (PCB boards) is a key step to ensure product performance and stability.

[0003] Traditional NTC thermistor welding mainly relies on manual operation or semi-automatic equipment. This method is not only labor-intensive, but also prone to problems such as uneven welding and inaccurate positioning, which in turn leads to unstable welding quality. In addition, with the strengthening trend of miniaturization of electronic products, the operating space in the welding process has become increasingly narrow, and the difficulty of manual operation has also increased. After welding, the resistors need to be tested manually or with simple equipment, and defective products need to be separated, which further reduces production efficiency.

[0004] In order to improve production efficiency and welding quality, fully automated welding systems have gradually become the development direction of the industry. However, when dealing with precision electronic components, existing automated welding systems often face problems such as how to ensure welding accuracy, how to effectively test welding results, and how to avoid product scrapping due to poor welding. These problems not only affect production efficiency, but also increase the production costs of enterprises. Therefore, there is an urgent need for a system that can realize automatic welding of NTC thermistors. The system should have high-precision component positioning and welding capabilities, and can automatically detect welding quality after welding is completed, and further process the product according to the detection results. Through such a system, production efficiency can be greatly improved, product quality can be guaranteed, and manual intervention can be reduced, reducing production costs. Summary of the invention

[0005] In order to improve production efficiency, ensure product quality, reduce manual intervention, and lower production costs, this application provides an integrated thermistor automatic welding system. This application provides the following technical solutions:

[0006] In a first aspect, the present application provides a thermistor automatic welding integrated system, comprising:

[0007] Machine base;

[0008] A feeding track and a defective product track, wherein the feeding track and the defective product track are arranged in parallel on the machine base;

[0009] A fixed platform and a material plate cutting mechanism, wherein the fixed platform and the material plate cutting mechanism are located on one side of the feeding track, a resistor material plate is provided on the fixed platform, the material plate cutting mechanism is used to cut and grab the resistor material plate, and a first transfer module is provided between the material plate cutting mechanism and the feeding track;

[0010] A welding platform and a welding mechanism, wherein the welding platform and the welding mechanism are located on one side of the feeding track, the welding platform is used to fix the PCB board and the cut resistors, and the welding mechanism is used to weld the resistors on the PCB board; the first transfer module is used to place the PCB board on the welding platform;

[0011] A resistance testing module and a second transfer module, wherein the resistance testing module and the second transfer module are arranged on the feeding track, the resistance testing module is used to perform a resistance test on the PCB board after welding, and the second transfer module is used to move the PCB board to the defective product track;

[0012] A cleaning tool and a cleaning box, wherein the cleaning tool and the cleaning box are located on one side of the feeding track, and a third transfer module is provided between the cleaning tool and the feeding track, and the third transfer module is used to move the PCB board to the cleaning tool.

[0013] In a specific possible implementation scheme, the sheet cutting mechanism includes an upper cutting component and a lower cutting component, the fixed platform is connected to an x-axis motion module and a y-axis motion module, the upper cutting component is located above the fixed platform, and the lower cutting component is located below the fixed platform.

[0014] In a specific feasible implementation scheme, the upper cutting assembly includes a first cylinder, an upper cutting fixed plate and an upper cutting mounting plate, the first cylinder is mounted on the upper cutting fixed plate, the upper cutting mounting plate is slidably arranged on the upper cutting fixed plate, and the piston rod of the first cylinder is connected to the upper cutting mounting plate; a straw and an upper cutting pressure block are provided on the upper cutting mounting plate, the interior of the upper cutting pressure block is hollow, the straw is slidably arranged inside the upper cutting pressure block, the bottom end of the straw is located in the same horizontal plane as the bottom end of the upper cutting pressure block, and a makeshift groove for placing the resistor is provided at the bottom end of the straw.

[0015] In a specific feasible implementation scheme, an upper cutting slider is slidably arranged on the upper cutting mounting plate, and the bottom end of the upper cutting slider is connected to the straw; a second cylinder is also provided on the upper cutting fixing plate, and a return spring is vertically provided on the upper cutting mounting plate, the top end of the return spring is connected to the piston rod of the second cylinder, and the bottom end of the return spring is connected to the upper cutting slider.

[0016] In a specific feasible implementation scheme, the lower cutting assembly includes a lower cutting bottom plate and a lower cutting top plate, the lower cutting bottom plate is provided with a lifting cylinder, the piston rod of the lifting cylinder passes through the lower cutting bottom plate and is connected to a vertically arranged lower cutting punch, the top surface of the lower cutting top plate is provided with a lower cutting fixed block, the interior of the lower cutting fixed block is hollow, the lower cutting punch is slidably arranged inside the lower cutting fixed block, and the top end of the lower cutting punch is the same shape as the thermistor.

[0017] In a specific feasible implementation scheme, a lower cutting mounting plate is sleeved and fixed on the lower cutting punch, and the lower cutting mounting plate is located between the lower cutting bottom plate and the lower cutting top plate. A buffer spring is vertically provided between the lower cutting mounting plate and the lower cutting top plate, and the top end of the buffer spring is connected to the bottom surface of the lower cutting top plate, and the bottom end of the buffer spring is connected to the top surface of the lower cutting mounting plate.

[0018] In a specific feasible implementation scheme, the welding mechanism includes a welding frame and a welding linear module arranged on the welding frame, the welding linear module is provided with a welding plate, a welding needle is clamped at the bottom end of the welding plate, a fume collector is connected to one side of the welding block, and the fume collector is located above the welding needle.

[0019] In a specific feasible implementation scheme, a welding block is slidably arranged on the welding plate, and the bottom end of the welding block is connected to the welding pin; a countersunk hole is opened on the top surface of the welding plate, and the welding block is connected with a vertically arranged bolt, the top end of the bolt is stuck in the countersunk hole, and the bottom end of the bolt passes through the countersunk hole and is connected to the welding block; a pressure sensor is provided on the welding plate, and the pressure sensor is arranged between the top surface of the welding block and the bottom surface of the welding plate.

[0020] In a specific feasible implementation scheme, the welding platform includes a welding top plate and a welding bottom plate connected to each other, the welding top plate is located above the welding bottom plate, a limiting groove for placing the PCB board is opened on the welding top plate, a first limiting cylinder is provided on one side of the short side of the limiting groove, and a second limiting cylinder and a third limiting cylinder are provided on one side of the long side of the limiting groove.

[0021] In a specific feasible implementation scheme, a third cylinder is provided on the welding base plate, and the piston rod of the third cylinder is connected to a cover plate, and the cover plate is located above the limit groove; a placement groove is provided on the cover plate, and a placement through hole of the same size as the thermistor is provided in the placement groove; a fourth cylinder and a rotating base are provided on the top surface of the cover plate, and the rotating base is hingedly arranged in the placement groove, and a connecting rod is provided between the rotating base and the fourth cylinder, one end of the connecting rod is hinged to the piston rod of the fourth cylinder, and the other end of the connecting rod is hinged to the rotating base, and a sheet pressure plate is provided at the end of the rotating base away from the connecting rod, and the fourth cylinder drives the connecting rod so that the rotating base drives the sheet pressure plate to press above the placement through hole.

[0022] In summary, the beneficial effects of this application include at least:

[0023] 1) Through the integrated design of the automated cutting components (upper cutting components and lower cutting components) and the welding mechanism, the system can accurately cut the resistors and automatically weld them to the PCB board. This efficient and automated operation not only improves production efficiency, but also ensures the cutting and welding accuracy of the resistors, reducing errors and defects caused by manual operation.

[0024] 2) The sliding design of the welding block and the real-time monitoring of the pressure sensor can accurately control the pressure applied during the welding process, ensuring the consistency and stability of the welding quality. The fume collector effectively collects and removes welding fumes, maintains a good working environment and prevents the welding quality from being affected by the fumes, thereby improving the overall welding effect and product quality.

[0025] 3) The system is equipped with a resistance test module to detect the resistance value of the PCB board after welding, which can quickly identify and handle unqualified products. In addition, the cleaning tool and cleaning box are used to clean and dry the PCB board after welding, further improving the overall quality and stability of the product. This comprehensive testing and processing capability has reduced the outflow rate of defective products and improved the reliability of the production line and the consistency of the product.

[0026] Aiming at the problems of large manual operation error, low welding efficiency and unstable quality in the traditional NTC thermistor welding process, an automated system is provided. The system realizes a fully automated process of a series of operations from PCB board feeding, NTC thermistor cutting, precise positioning, automatic welding to resistance value testing after welding, defective product diversion and finished product cleaning through the organic combination of multiple modules such as feeding track, cutting mechanism, welding platform, welding mechanism, resistance test module and cleaning device. Through this system, not only the production efficiency is improved, but also the welding quality and yield rate are significantly improved, and the possibility of manual intervention and production cost are reduced. First, through the fixed platform and the material plate cutting mechanism, the resistor material plate is accurately cut and positioned to ensure that the resistor is accurately placed on the PCB board; secondly, through the welding platform and welding mechanism, the high-precision welding of the resistor and the PCB is automatically completed; thirdly, the welding quality is detected online through the resistance test module, and the qualified and defective products are automatically distinguished in combination with the transfer module. Finally, the PCB board after welding is cleaned by the cleaning tool, ensuring the automation and efficiency of the entire production process and the reliability of the product, and significantly improving the production efficiency and welding quality.

[0027] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structure of the thermistor automatic welding integrated system in this embodiment is shown in FIG. Figure 1 .

[0029] Figure 2 The overall structure of the thermistor automatic welding integrated system in this embodiment is shown in FIG. Figure 2 .

[0030] Figure 3 It is a structural schematic diagram of the material plate cutting mechanism in this embodiment.

[0031] Figure 4 Schematic diagram of the structure of the upper cutting assembly and the lower cutting assembly in this embodiment.

[0032] Figure 5 yes Figure 4 Enlarged view of part A.

[0033] Figure 6 Schematic diagram of the structure of the welding mechanism in this embodiment.

[0034] Figure 7 yes Figure 6 Enlarged view of part B.

[0035] Figure 8 Schematic diagram of the structure of the welding platform in this embodiment.

[0036] Fig. 9 yes Figure 6 Magnified view of part C.

[0037] Fig.10 Schematic diagram of the structure of the resistance test module in this embodiment.

[0038] Fig.11 It is a schematic diagram of the structure of the cleaning box and the cleaning tool in this embodiment.

[0039] Reference numerals: 1, machine base; 11, feeding track; 12, defective product track; 13, resistor material board; 14, PCB board; 15, first gantry; 16, first transfer module; 17, second gantry; 18, second transfer module; 19, third gantry; 191, third transfer module; 2, material board cutting mechanism; 21, upper cutting assembly; 211, first cylinder; 212, upper cutting fixing Plate; 213, upper cutting mounting plate; 214, upper cutting pressure block; 215, upper cutting slide; 216, straw; 217, return spring; 218, second cylinder; 219, clearance groove; 22, lower cutting assembly; 221, lower cutting top plate; 222, lower cutting middle plate; 223, lower cutting bottom plate; 224, support column; 225, lifting cylinder; 226, lower cutting punch; 227, lower Cutting fixed block; 228, buffer spring; 229, lower cutting mounting plate; 23, fixed platform; 24, x-axis motion module; 25, y-axis motion module; 3, welding platform; 31, welding bottom plate; 32, welding top plate; 321, first limit cylinder; 322, second limit cylinder; 323, third limit cylinder; 324, limit groove; 33, third cylinder; 34, cover plate; 341, placement groove; 342, placement through hole; 35, fourth cylinder; 36, connecting rod; 37, rotating base; 38, sheet pressure plate; 4, welding mechanism; 41, welding frame; 42, welding linear module; 43, welding block; 44, smoke dust collector; 45, welding needle; 46, welding plate; 47, bolt; 48, pressure sensor; 49, countersunk hole; 5, cleaning box; 6, cleaning tooling; 7, resistance test module. DETAILED DESCRIPTION

[0040] The specific implementation methods of the present application are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0043] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] The embodiment of the present application discloses an integrated thermistor automatic welding system.

[0045] Reference Figure 1 The thermistor automatic welding integrated system includes a machine base 1, a feeding track 11 and a defective track 12, and the feeding track 11 and the defective track 12 are arranged in parallel on the top surface of the machine base 1. Figure 2 The top surface of the machine base 1 is also provided with a fixed platform 23 and a material plate cutting mechanism 2, the fixed platform 23 and the material plate cutting mechanism 2 are located on one side of the feeding track 11, a resistor material plate 13 is fixedly mounted on the fixed platform 23, the material plate cutting mechanism 2 is used to cut and grab the resistor material plate 13, a first gantry 15 is provided between the material plate cutting mechanism 2 and the feeding track 11, and a first transfer module 16 is provided on the first gantry 15.

[0046] Reference Figure 3The fixed platform 23 is connected with an x-axis motion module 24 and a y-axis motion module 25, wherein the x-axis motion module 24 is arranged on the y-axis motion module 25, and the fixed platform 23 is arranged on the x-axis motion module 24. By controlling the x-axis motion module 24 and the y-axis motion module 25, the material plate cutting mechanism 2 can be controlled to cut the resistors on the resistor material plate 13 one by one. The material plate cutting mechanism 2 includes an upper cutting component 21 and a lower cutting component 22, wherein the upper cutting component 21 is arranged on the first gantry 15 and is located above the fixed platform 23, and the lower cutting component 22 is located below the fixed platform 23.

[0047] Reference Figure 4 The upper cutting assembly 21 includes a first cylinder 211, an upper cutting fixing plate 212 and an upper cutting mounting plate 213. The first cylinder 211 is fixedly mounted on the upper cutting fixing plate 212. The upper cutting mounting plate 213 is slidably arranged on the upper cutting fixing plate 212 along the vertical direction. The piston rod of the first cylinder 211 is fixedly connected to the top of the upper cutting mounting plate 213. An upper cutting slider 215 and an upper cutting pressing block 214 are arranged on the upper cutting mounting plate 213. The upper cutting slider 215 is slidably arranged on the upper cutting mounting plate 213 along the vertical direction. The bottom end of the upper cutting slider 215 is connected to a vertically arranged straw 216. The interior of the upper cutting pressing block 214 is hollow, and the straw 216 is slidably arranged inside the upper cutting pressing block 214. The bottom end of the straw 216 and the bottom end of the upper cutting pressing block 214 are located on the same horizontal plane. Figure 5 The bottom end of the suction pipe 216 is provided with a recess 219 for the resistor to be placed in. The upper cutting fixed plate 212 is also fixedly mounted with a second cylinder 218, and the upper cutting mounting plate 213 is vertically provided with a return spring 217, the top end of the return spring 217 is connected to the piston rod of the second cylinder 218, and the bottom end of the return spring 217 is connected to the side of the upper cutting slide block 215.

[0048] Reference Figure 4 The lower cutting assembly 22 includes a lower cutting bottom plate 223, a lower cutting middle plate 222 and a lower cutting top plate 221 which are arranged in sequence from bottom to top. The lower cutting bottom plate 223 is fixed by four supporting columns 224. A lifting cylinder 225 is fixedly installed on the bottom surface of the lower cutting bottom plate 223. The piston rod of the lifting cylinder 225 passes through the lower cutting bottom plate 223 and is connected to a vertically arranged lower cutting punch 226. A lower cutting fixed block 227 is arranged on the top surface of the lower cutting top plate 221. The interior of the lower cutting fixed block 227 is arranged hollow. The lower cutting punch 226 is slidably arranged inside the lower cutting fixed block 227. The top end of the lower cutting punch 226 and the top end of the lower cutting fixed block 227 are located on the same horizontal plane. Figure 5 , the top of the lower cutting punch 226 has the same shape as the thermistor. Figure 3Based on the above design, in practice, when the resistor material plate 13 is cut, the first cylinder 211 is first driven to drive the upper cutting block 214 to press the resistor material plate 13, and then the lifting cylinder 225 is driven to drive the lower cutting punch 226 to punch the resistor material plate 13 upward. The lower cutting punch 226 brings the punched resistor into the upper cutting block 214. Due to the setting of the reset spring 217 and the upper cutting slider 215, the suction pipe 216 will be squeezed upward. At this time, the punched resistor is just located in the clearance groove 219 of the suction pipe 216. The suction pipe 216 is now turned on to vacuum and suck the punched resistor. Then the lifting cylinder 225 drives the lower cutting punch 226 to retract, and the upper cutting assembly 21 also moves upward as a whole. Due to the reset spring 217 restoring the deformation and driving the suction pipe 216 to reset, the punched resistor is finally located at the outlet of the upper cutting block 214. The coordinated use of the upper cutting component 21 and the lower cutting component 22 ensures the accurate cutting of the resistor material plate 13. The upper cutting pressing block 214 can firmly press the material plate before cutting, while the lower cutting punch 226 accurately punches the resistor out of the material plate, ensuring the cutting accuracy. Through the synergistic effect of the first cylinder 211 and the lifting cylinder 225, the upper cutting component 21 can not only cut the resistor, but also accurately grasp and shift the cut resistor to the subsequent process through the vacuum adsorption function of the straw 216, thereby reducing manual intervention and improving production efficiency. The sliding design of the cutting mechanism allows the upper cutting slider 215 and the straw 216 to slide in the vertical direction, and cooperates with the deformation recovery function of the reset spring 217, so that the cutting mechanism can adapt to resistor material plates 13 of different thicknesses or sizes, and has certain flexibility and adjustability.

[0049] Reference Figure 4The top surface of the lower cutting middle plate 222 is provided with a lower cutting mounting plate 229 that can slide in the vertical direction. The lower cutting mounting plate 229 is sleeved on the lower cutting punch 226 and is fixedly connected thereto. A buffer spring 228 is vertically provided between the lower cutting mounting plate 229 and the lower cutting top plate 221. The top of the buffer spring 228 is connected to the bottom surface of the lower cutting top plate 221, and the bottom of the buffer spring 228 is connected to the top surface of the lower cutting mounting plate 229. The role of the buffer spring 228 in this design is mainly to reduce the impact force generated during the buffer cutting process and protect the stability and accuracy of the cutting mechanism. Specifically, during the cutting process of the resistor material plate 13, when the lower cutting punch 226 punches the resistor material plate 13 upward under the drive of the jacking cylinder 225, a large impact force will be generated. The buffer spring 228 is arranged between the lower cutting mounting plate 229 and the lower cutting top plate 221, and can absorb a part of the impact energy when the punch is punching, thereby reducing the direct impact on the cutting components during the cutting process, avoiding damage to parts or reduced cutting accuracy due to excessive impact force. At the same time, the buffer spring 228 also helps the lower cutting mounting plate 229 to be repositioned stably, ensuring the smooth progress of the entire cutting process and the accurate positioning of the resistor after cutting.

[0050] Reference Figure 1 and Figure 2 The top surface of the base 1 is also provided with a welding platform 3 and a welding mechanism 4, which are located on one side of the feeding track 11. Figure 6 and Figure 7 The welding platform 3 is used to fix the PCB board 14 and the cut resistors, and the welding mechanism 4 is used to weld the punched resistors to the PCB board 14. Figure 3 The first transfer module 16 is used to place the PCB board 14 on the welding platform 3 , and the welding platform 3 and the welding mechanism 4 are both located directly below the first gantry 15 .

[0051] Reference Figure 6 and Figure 7 The welding platform 3 includes a welding drive module and a welding bottom plate 31 arranged on the welding drive module. A welding top plate 32 is connected to the top of the welding bottom plate 31. A limiting groove 324 for placing the PCB board 14 is opened on the top surface of the welding top plate 32. The limiting groove 324 is a rectangular groove. A first limiting cylinder 321 is fixedly installed on the top surface of the welding top plate 32 at one side of the short side of the limiting groove 324. A second limiting cylinder 322 and a third limiting cylinder 323 are fixedly installed on the top surface of the welding top plate 32 at one side of the long side of the limiting groove 324. Figure 3, the first transfer module 16 moves the PCB board 14 into the limiting groove 324, and then drives the first limiting cylinder 321, the second limiting cylinder 322 and the third limiting cylinder 323, so that the piston rods of the three can fix the PCB board 14 from two directions, thereby ensuring the stability of the PCB board 14 during subsequent welding. The design of the limiting groove 324 ensures the initial positioning of the PCB board 14 on the welding platform 3, and the piston rods of the first, second and third limiting cylinders 323 clamp the PCB board 14 from different directions, which can further accurately fix the position of the PCB board 14. This multi-point limiting mechanism can prevent any movement or deviation of the PCB board 14 during the welding process, ensuring the accuracy of the welding position.

[0052] Reference Figure 6 and Figure 7 A third cylinder 33 is fixedly mounted on the top surface of the welding bottom plate 31, and a piston rod of the third cylinder 33 is connected to a horizontally arranged cover plate 34, which is located above the limiting groove 324. Figure 8 , by driving the third cylinder 33, the piston rod of the third cylinder 33 can drive the cover plate 34 to open or cover the limit groove 324. The top surface of the cover plate 34 is provided with a placement groove 341, and a placement through hole 342 of the same size as the thermistor is provided in the placement groove 341. When the cover plate 34 covers the limit groove 324, the placement through hole 342 connects the limit groove 324 with the outside. The top surface of the cover plate 34 is also fixedly installed with a fourth cylinder 35 and a rotating base 37. The rotating base 37 is hingedly arranged in the placement groove 341. A connecting rod 36 is arranged between the rotating base 37 and the fourth cylinder 35. One end of the connecting rod 36 is hingedly connected to the piston rod of the fourth cylinder 35, and the other end of the connecting rod 36 is hingedly connected to the rotating base 37. Two sheet-like pressing plates 38 are symmetrically installed at one end of the rotating base 37 away from the connecting rod 36. The fourth cylinder 35 drives the connecting rod 36 so that the rotating base 37 drives the sheet-like pressing plate 38 to press directly above the placement through hole 342. In the implementation, after the PCB board 14 is placed, the third cylinder 33 is driven to drive the cover plate 34 to cover the limit groove 324, and the PCB board 14 is placed. Figure 3, at this time, the upper cutting assembly 21 places the cut resistor in the placement through hole 342, and then drives the fourth cylinder 35 so that the sheet pressure plate 38 can press the resistor on the PCB board 14. The placement through hole 342 on the cover plate 34 is precisely matched with the size of the thermistor, ensuring that each resistor can be accurately aligned with the limit groove 324 when placed. This can avoid inaccurate placement or offset of the resistor, thereby improving the accuracy of welding. The cover plate 34 can be opened or closed by the drive of the third cylinder 33 to cover the limit groove 324. When the cover plate 34 is closed, the placement through hole 342 not only protects the resistor in the limit groove 324, but also applies uniform pressure to the resistor by rotating the base 37 and the sheet pressure plate 38, ensuring that the resistor will not move or fall off during the welding process. This clamping and pressing mechanism ensures the stability of the resistor during the welding process. In addition, the design of the sheet pressure plate 38 allows it to not occupy space in the welding area while pressing the resistor. Since the sheet-like pressing plate 38 is far away from the welding point during welding, this design avoids welding difficulties or incomplete welding that may be caused by the existence of the pressing plate, thereby ensuring smooth welding work.

[0053] Reference Figure 6 and Fig. 9 The welding mechanism 4 includes a welding frame 41 and a welding linear module 42 arranged on the welding frame 41. The welding linear module 42 is arranged vertically. A welding plate 46 is arranged on the welding linear module 42. The welding plate 46 is C-shaped as a whole. A welding block 43 is slidably arranged between the top plate and the bottom plate of the welding plate 46. A welding needle 45 is clamped at the bottom end of the welding block 43. The welding needle 45 is a tungsten rod welding needle 45. The side wall of the welding block 43 is also fixedly connected with a fume collector 44, and the fume collector 44 is located above the welding needle 45. In implementation, the welding drive module drives the welding platform 3 to move below the welding needle 45, and then the welding linear module 42 drives the welding needle 45 to move downward to weld the resistor. The welding fume generated during the welding process may have a negative impact on the health of the operator and the welding quality. The fume collector 44 arranged on the side wall of the welding block 43 effectively collects and removes the fume generated during the welding process, ensuring the cleanliness and safety of the working environment while protecting the welding quality.

[0054] Reference Figure 6 and Fig. 9, the top of the welding block 43 is suspended on the welding plate 46. Specifically, a countersunk hole 49 is provided on the top surface of the welding plate 46. A vertically arranged bolt 47 is connected to the top of the welding block 43. The top of the bolt 47 is stuck in the countersunk hole 49, and the bottom of the bolt 47 passes through the countersunk hole 49 and is threadedly connected to the top surface of the welding block 43. A pressure sensor 48 is also installed on the welding plate 46. The pressure sensor 48 is arranged between the top surface of the welding block 43 and the bottom surface of the welding plate 46. In implementation, the setting of the pressure sensor 48 can monitor the pressure applied by the welding block 43 on the welding point in real time and ensure that it meets the set range. Since the sliding design of the welding block 43 allows the welding block 43 to move moderately during the welding process, the sensor can detect this change and adjust the pressure of the welding block 43 by controlling the welding linear module 42 to ensure stable welding quality. In addition, the sliding setting allows the welding block 43 to be adjusted in position during the welding process, which is very important for processing welding points of different sizes and positions. Monitoring by the pressure sensor 48 ensures that the pressure remains within the correct range during the adjustment process, further ensuring the accuracy and consistency of welding.

[0055] Reference Figure 1 and Figure 2 The top surface of the machine base 1 is also provided with a resistance test module 7 and a second gantry 17, and the second gantry 17 is provided with a second transfer module 18. The resistance test module 7 is arranged on the feeding track 11, and the resistance test module 7 is used to perform resistance test on the PCB board 14 after welding, and the second transfer module 18 is used to move the PCB board 14 to the defective track 12. Fig.10 After the resistor is welded on the PCB board 14, the PCB board 14 is sent back to the feeding track 11 through the first transfer module 16 again, and then the resistance test module 7 arranged on the feeding track 11 is used to test the resistance of the PCB board 14. The resistance test module 7 tests the resistance test points on the bottom surface of the PCB board 14 through the probe of the prior art. Since the structure of the resistance test part is the same as that of the prior art, this application will not be described in detail. The resistance test module 7 is connected to a multimeter, and the resistance value is determined by reading the multimeter. If the resistance value is normal, the PCB board 14 is allowed to continue to be transported on the feeding track 11. If the resistance value is abnormal, the PCB board 14 is moved to the defective track 12 through the second transfer module 18.

[0056] Reference Figure 1 and Figure 2 The top surface of the base 1 is also provided with a cleaning tool 6 and a cleaning box 5, which are located on one side of the feeding track 11. Fig.11A third gantry 19 is provided between the cleaning fixture 6 and the feeding track 11, and a third transfer module 191 is provided on the third gantry 19. The third transfer module 191 is used to move the PCB board 14 to the cleaning fixture 6. In practice, if the resistance test of the PCB board 14 after welding is normal, the PCB board 14 is moved to the cleaning fixture 6 by the third transfer module 191. The cleaning fixture 6 in the present application is specifically a tray. Then the cleaning fixture 6 is driven to drive the PCB board 14 into the cleaning box 5 for cleaning and drying. After cleaning and drying, the PCB board 14 is sent back to the feeding track 11 by the third transfer module 191 again, thereby completing all welding operations.

[0057] In summary, the present application greatly improves production efficiency through the integrated process of automated cutting, resistor placement, welding, testing and cleaning, and solves the accuracy problem in traditional manual operation through precise cutting and welding control. The system accurately cuts the resistor material plate 13 through the upper cutting component 21 and the lower cutting component 22. The upper cutting component 21 is driven by the first cylinder 211 and is equipped with an upper cutting pressure block 214 and a straw 216 to ensure accurate cutting and grasping of the resistor. The lower cutting component 22 includes a lifting cylinder 225 and a lower cutting punch 226, which can reduce the impact force during the punching process and protect the stability of the cutting mechanism. The setting of the buffer spring 228 further absorbs the impact force and ensures the cutting accuracy. The welding platform 3 includes a plurality of limit cylinders and a cover plate 34 for fixing the PCB board 14 and accurately placing the resistor. The welding block 43 in the welding mechanism 4 is designed to be a sliding setting and is equipped with a pressure sensor 48 to monitor the welding pressure in real time and adjust the pressure of the welding block 43 to ensure the stability of the welding quality. The smoke dust collector 44 is installed on the side wall of the welding block 43, which can effectively collect and remove the smoke during the welding process, protect the operating environment and welding quality. After welding, the PCB board 14 is tested for resistance by the resistance test module 7. The test result determines the destination of the PCB board 14: qualified PCB boards 14 enter the cleaning tool 6 for cleaning and drying, and unqualified PCB boards 14 are sent to the defective product track 12. The cleaning tool 6 is used to send the cleaned PCB board 14 into the cleaning box 5, and the cleaning and drying treatment is carried out in the cleaning box 5.

[0058] In practice, the automated cutting, welding, testing and cleaning processes reduce manual intervention and ensure the accuracy and consistency of each step of the operation. Through precise cutting and welding control, the accuracy problem in traditional manual operation is solved and production efficiency is improved. The sliding design of the welding block 43 and the monitoring of the pressure sensor 48 enable the pressure in the welding process to be accurately controlled, ensuring the consistency of welding quality. The smoke dust collector 44 effectively handles the welding smoke and maintains a good operating environment. The PCB board 14 after welding is tested by the resistance test module 7, and unqualified products are identified and processed in time, which reduces the outflow of defective products and improves the quality of the final product. The design of the cutting mechanism allows the processing of resistor plates 13 of different thicknesses or sizes, and has strong adaptability and flexibility.

[0059] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A thermistor automatic welding integrated system, characterized in that: include: Machine base; A feeding track and a defective product track, wherein the feeding track and the defective product track are arranged in parallel on the machine base; A fixed platform and a material plate cutting mechanism, the fixed platform and the material plate cutting mechanism are located on one side of the feeding track, a resistance material plate is arranged on the fixed platform, the material plate cutting mechanism is used to cut and grab the resistance material plate, and a first transfer module is arranged between the material plate cutting mechanism and the feeding track; the material plate cutting mechanism comprises an upper cutting component and a lower cutting component, the fixed platform is connected with an x-axis motion module and a y-axis motion module, the upper cutting component is located above the fixed platform, and the lower cutting component is located below the fixed platform; The upper cutting assembly comprises a first cylinder, an upper cutting fixing plate and an upper cutting mounting plate, wherein the first cylinder is mounted on the upper cutting fixing plate, the upper cutting mounting plate is slidably arranged on the upper cutting fixing plate, and the piston rod of the first cylinder is connected to the upper cutting mounting plate; a straw and an upper cutting pressing block are arranged on the upper cutting mounting plate, the interior of the upper cutting pressing block is hollow, the straw is slidably arranged inside the upper cutting pressing block, the bottom end of the straw is located at the same horizontal plane as the bottom end of the upper cutting pressing block, and a makeshift groove for placing a resistor is provided at the bottom end of the straw; The lower cutting assembly comprises a lower cutting bottom plate and a lower cutting top plate, the lower cutting bottom plate is provided with a lifting cylinder, the piston rod of the lifting cylinder passes through the lower cutting bottom plate and is connected to a vertically arranged lower cutting punch, the top surface of the lower cutting top plate is provided with a lower cutting fixing block, the interior of the lower cutting fixing block is hollow, the lower cutting punch is slidably arranged inside the lower cutting fixing block, and the top end of the lower cutting punch has the same shape as the thermistor; A welding platform and a welding mechanism, wherein the welding platform and the welding mechanism are located on one side of the feeding track, the welding platform is used to fix the PCB board and the cut resistors, and the welding mechanism is used to weld the resistors on the PCB board; the first transfer module is used to place the PCB board on the welding platform; A resistance testing module and a second transfer module, wherein the resistance testing module and the second transfer module are arranged on the feeding track, the resistance testing module is used to perform a resistance test on the PCB board after welding, and the second transfer module is used to move the PCB board to the defective product track; A cleaning tool and a cleaning box, wherein the cleaning tool and the cleaning box are located on one side of the feeding track, and a third transfer module is provided between the cleaning tool and the feeding track, and the third transfer module is used to move the PCB board to the cleaning tool.

2. The thermistor automatic welding integrated system according to claim 1, characterized in that: An upper cutting slider is slidably arranged on the upper cutting mounting plate, and the bottom end of the upper cutting slider is connected to the straw; a second cylinder is also arranged on the upper cutting fixing plate, and a return spring is vertically arranged on the upper cutting mounting plate, the top end of the return spring is connected to the piston rod of the second cylinder, and the bottom end of the return spring is connected to the upper cutting slider.

3. The thermistor automatic welding integrated system according to claim 1, characterized in that: A lower cutting mounting plate is sleeved and fixed on the lower cutting punch, and the lower cutting mounting plate is located between the lower cutting bottom plate and the lower cutting top plate. A buffer spring is vertically provided between the lower cutting mounting plate and the lower cutting top plate, and the top end of the buffer spring is connected to the bottom surface of the lower cutting top plate, and the bottom end of the buffer spring is connected to the top surface of the lower cutting mounting plate.

4. The thermistor automatic welding integrated system according to claim 1, characterized in that: The welding mechanism includes a welding frame and a welding linear module arranged on the welding frame, the welding linear module is provided with a welding plate, a welding block is slidably arranged on the welding plate, a welding needle is clamped at the bottom end of the welding block, a fume dust collector is connected to one side of the welding block, and the fume dust collector is located above the welding needle.

5. The thermistor automatic welding integrated system according to claim 4, characterized in that: A countersunk hole is provided on the top surface of the welding plate, and the welding block is connected with a vertically arranged bolt. The top end of the bolt is stuck in the countersunk hole, and the bottom end of the bolt passes through the countersunk hole and is connected to the welding block; a pressure sensor is provided on the welding plate, and the pressure sensor is arranged between the top surface of the welding block and the bottom surface of the welding plate.

6. The thermistor automatic welding integrated system according to claim 1, characterized in that: The welding platform includes a welding top plate and a welding bottom plate connected to each other, the welding top plate is located above the welding bottom plate, a limiting groove for placing the PCB board is opened on the welding top plate, a first limiting cylinder is provided on one side of the short side of the limiting groove, and a second limiting cylinder and a third limiting cylinder are provided on one side of the long side of the limiting groove.

7. The thermistor automatic welding integrated system according to claim 6, characterized in that: A third cylinder is provided on the welding base plate, and the piston rod of the third cylinder is connected to a cover plate, and the cover plate is located above the limiting groove; a placement groove is provided on the cover plate, and a placement through hole of the same size as the thermistor is provided in the placement groove; a fourth cylinder and a rotating base are provided on the top surface of the cover plate, and the rotating base is hingedly arranged in the placement groove, and a connecting rod is provided between the rotating base and the fourth cylinder, one end of the connecting rod is hinged to the piston rod of the fourth cylinder, and the other end of the connecting rod is hinged to the rotating base, and a sheet pressure plate is provided at the end of the rotating base away from the connecting rod, and the fourth cylinder drives the connecting rod so that the rotating base drives the sheet pressure plate to press above the placement through hole.

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