Automatic welding equipment for NTC resistor

Abstract

The application discloses an automatic welding equipment for NTC resistance, which comprises a machine box, a rotating disc mechanism arranged on the machine box, a visual detection device before welding, a visual detection device after welding, a welding mechanism, a clamp opening and welding slag removing mechanism, a clamp carrying mechanism and a clamp conveying line, wherein the visual detection device before welding, the welding mechanism, the visual detection device after welding, the clamp opening and welding slag removing mechanism and the clamp carrying mechanism are sequentially arranged along the rotating direction of the rotating disc mechanism. The automatic welding equipment for NTC resistance can automatically detect the NTC resistance before and after welding and clean the welding slag, thereby replacing manual quality inspection and slag cleaning, improving the welding production speed and efficiency of the NTC resistance, increasing the production capacity of the NTC resistance, and improving the quality of the quality inspection and slag cleaning. Moreover, the automatic welding equipment for NTC resistance has multiple welding mechanisms which can sequentially weld each welding point of the NTC resistance, and the position of the NTC resistance does not need to be frequently adjusted manually, thereby saving time and effort, and improving the welding speed and efficiency.

Description

Technical Field

[0001] This invention relates to the field of NTC resistor production, and in particular to an automatic welding device for NTC resistors. Background Technology

[0002] Currently, the welding process in the NTC resistor production process is generally completed using an automatic welding machine. When the automatic welding machine is working, the NTC resistor needs to be placed manually in the welding position, and then the automatic welding machine is started to weld one welding point of the NTC resistor. After one welding point is completed, the position of the NTC resistor is adjusted manually, and then the automatic welding machine is started again to weld another welding point of the NTC resistor. If the NTC resistor has multiple welding points, the position of the NTC resistor needs to be adjusted multiple times, and the automatic welding machine needs to be started multiple times to weld each welding point of the NTC resistor. The operation is cumbersome, time-consuming and labor-intensive, and the welding speed and efficiency are low.

[0003] Moreover, after NTC resistors are soldered, the soldering quality is generally inspected manually. However, manual visual inspection of the soldering points inevitably leads to false detections and missed detections, resulting in low quality and poor inspection results.

[0004] In addition, to prevent welding slag from affecting the subsequent processing of NTC resistors, the welding slag on the NTC resistors needs to be manually cleaned after the quality inspection is completed. This not only further affects the welding production speed and efficiency of NTC resistors, greatly impacting the production capacity of NTC resistors, but also results in inconsistent cleaning quality and high labor costs due to the quality of the cleaning workers themselves. Summary of the Invention

[0005] The main objective of this invention is to propose an automated welding device for NTC resistors, which aims to solve the problems of slow welding speed, low efficiency, and poor quality of manual quality inspection and slag removal in current NTC resistor welding.

[0006] To address the aforementioned problems, this invention proposes an automatic welding device for NTC resistors, comprising a chassis and a turntable mechanism mounted on the chassis, a pre-welding visual inspection device, a post-welding visual inspection device, a welding mechanism, a fixture opening and slag removal mechanism, a fixture transport mechanism, and a fixture conveyor line. The pre-welding visual inspection device, welding mechanism, post-welding visual inspection device, fixture opening and slag removal mechanism, and fixture transport mechanism are arranged sequentially along the rotation direction of the turntable mechanism.

[0007] The turntable mechanism is equipped with a clamp, on which an NTC resistor is clamped. Driven by the turntable mechanism, the clamp rotates and passes sequentially through the pre-welding visual inspection device, the welding mechanism, the post-welding visual inspection device, the clamp opening and slag removal mechanism, and the clamp transport mechanism. The clamp stops for a period of time each time it passes through the pre-welding visual inspection device, the welding mechanism, the post-welding visual inspection device, the clamp opening and slag removal mechanism, and the clamp transport mechanism, allowing these devices to operate on the clamp.

[0008] The pre-welding visual inspection device is used to visually inspect the NTC resistors on the fixture to determine whether there are NTC resistors on the fixture and to obtain the position of the NTC resistors on the fixture.

[0009] The welding mechanism is used to weld NTC resistors on the fixture;

[0010] The post-welding visual inspection device is used to visually inspect the NTC resistors after welding in order to determine whether the welding quality is qualified.

[0011] The clamp opening and slag removal mechanism is used to open the clamp and remove the slag from the clamp and the NTC resistor.

[0012] The clamp handling mechanism is used to pick up clamps and place them on the clamp conveyor line for transport.

[0013] In one embodiment, the clamp includes a hingedly connected placement base and a cover, wherein the NTC resistor can be placed on the placement base and the cover can engage with the placement base to clamp the NTC resistor.

[0014] The placement base is provided with a through hole and an insertion hole;

[0015] The clamp includes a fixedly connected pressure frame and an extension rod. The pressure frame engages with the placement seat to clamp the NTC resistor. When the pressure frame engages with the placement seat, the extension rod extends horizontally away from the placement seat.

[0016] In one embodiment, the turntable mechanism includes:

[0017] Motor 1 is fixed on the chassis;

[0018] A turntable is horizontally set and connected to a motor. The motor drives the turntable to rotate around a vertical central axis. The turntable is provided with a through hole, a positioning pin and a positioning hole. The through hole is located directly below the through hole and the two are connected to each other. The positioning pin is tightly inserted into the insertion hole. There are multiple clamps, which are evenly distributed along the circumference of the turntable.

[0019] The photoelectric sensor three is fixedly connected to the chassis. The detection light emitted by the photoelectric sensor three can penetrate vertically upward through the through hole one and the through hole two to detect whether there is an NTC resistor on the fixture.

[0020] A pair of photoelectric sensors are fixedly connected to the chassis. The detection light emitted by the photoelectric sensors can pass through the clamp in the open state, and the detection light can be blocked by the clamp in the closed state, thereby detecting whether the clamp is closed.

[0021] The detection device three includes a mounting frame one, a positioning column, and a photoelectric sensor one. The positioning column is vertically slidably mounted on the mounting frame one. The positioning column can be inserted into the positioning hole when it moves upward, and can be detected by the photoelectric sensor one when it moves downward.

[0022] In one embodiment, the pre-welding visual inspection device includes:

[0023] Mounting bracket four is fixedly connected to the chassis;

[0024] Camera 1 is vertically slidably mounted on mounting bracket 4;

[0025] Light source one is located directly below camera one and is vertically slidably mounted on mounting bracket four, with the turntable located below light source one;

[0026] Lens 1 is located between camera 1 and light source 1, and is fixedly connected to camera 1;

[0027] The lifting device four is located on the mounting frame four and is connected to the camera one and the light source one. It is used to drive the camera one and the light source one to move vertically on the mounting frame four.

[0028] In one embodiment, the post-weld visual inspection device includes:

[0029] Mounting bracket five is fixedly connected to the chassis;

[0030] Camera 2 is vertically slidably mounted on mounting bracket 5;

[0031] Light source two is located directly below camera two and is vertically slidably mounted on mounting bracket five, with the turntable located below light source two;

[0032] Lens 2 is located between camera 2 and light source 2, and is fixedly connected to camera 2;

[0033] Lifting device five is located on mounting frame five and connected to camera two and light source two, and is used to drive camera two and light source two to move vertically on mounting frame five.

[0034] In one embodiment, there are multiple welding mechanisms, which are arranged sequentially along the rotation direction of the turntable mechanism, and each welding mechanism welds one welding point of the NTC resistor.

[0035] The welding mechanism includes:

[0036] Translation device three is fixedly connected to the chassis;

[0037] The welding machine body is connected to the translation device three, which drives the welding machine body to translate.

[0038] Lifting device six is ​​connected to the welding machine body or translation device three. An upper welding head is provided below the lifting device six, and the upper welding head is moved vertically by the lifting device six.

[0039] Lifting device seven is connected to translation device three. Lifting device seven is equipped with a lower welding head, which is located directly below the upper welding head. Lifting device seven drives the lower welding head to move vertically. After the lower welding head moves up through through hole one and through hole two, it works with the lower welding head to weld one welding point of the NTC resistor.

[0040] In one embodiment, the automatic welding equipment for NTC resistors further includes an electrode inspection mechanism for inspecting and calibrating the upper and lower welding heads. The electrode inspection mechanism includes:

[0041] Mounting bracket nine is fixedly connected to the chassis;

[0042] The electrode calibration block is vertically slidably mounted on mounting bracket nine.

[0043] The GT sensor is connected to the electrode calibration block signal.

[0044] Lifting device three is fixed on mounting frame nine and connected to electrode calibration block. It is used to drive the electrode calibration block to rise and fall. When the electrode calibration block rises, it can contact the upper welding head. When the electrode calibration block falls, it can contact the lower welding head.

[0045] In one embodiment, the clamp opening and slag removal mechanism includes a clamp opening mechanism and a slag removal mechanism, wherein the clamp opening mechanism includes:

[0046] Mounting bracket seven is fixedly connected to the chassis;

[0047] Lifting device one is fixedly connected to mounting frame seven;

[0048] The slide three is vertically slidably mounted on the mounting frame seven and connected to the lifting device one. The lifting device one drives the slide three to move up and down. A pressure block is fixed on the slide three. When the pressure block descends, it can press down the extension rod to drive the pressure frame to separate from the placement seat, thereby opening the clamp.

[0049] The slag removal mechanism includes:

[0050] An air blowing pipe, connected to mounting bracket seven, is used to blow air into the clamp;

[0051] Mounting base one is located below slide three and is fixedly connected to mounting bracket seven. The upper surface of mounting base one is provided with a recess, and multiple suction holes are provided in the recess. The multiple suction holes are connected to the suction head. The suction head picks up the solder slag on the fixture and NTC resistor through the multiple suction holes. The solder slag falls into the recess after passing through through hole two and through hole one.

[0052] In one embodiment, the clamping and transporting mechanism includes:

[0053] Mounting bracket eight is fixedly connected to the chassis;

[0054] Translation device one is fixedly connected to mounting bracket eight;

[0055] Lifting device two is connected to translation device one, and the translation device one drives lifting device two to move horizontally.

[0056] The robotic arm is connected to the second lifting device. The second lifting device drives the robotic arm to move vertically. The robotic arm is located above the turntable. Driven by the first translation device and the second lifting device, the robotic arm approaches the turntable and picks up the clamps on the turntable and sends them to the clamp conveyor line.

[0057] Photoelectric sensor four is installed on the robotic arm to detect whether the robotic arm is gripping a fixture.

[0058] In one embodiment, the fixture conveyor line includes:

[0059] A belt conveyor is mounted on a chassis. The robotic arm, driven by translation device one and lifting device two, picks up a clamp and places it onto the belt conveyor for transport.

[0060] A protective cover, located at the end of the belt conveyor in the conveying direction, is used to gather and collect the clamps to prevent them from falling off the belt conveyor.

[0061] Photoelectric sensor five is located at the entrance of the protective cover and is used to detect whether the fixture can enter the protective cover smoothly.

[0062] Beneficial effects: The automatic welding equipment for NTC resistors of the present invention can automatically perform pre-weld and post-weld visual inspection and slag cleaning of NTC resistors, replacing manual quality inspection and slag cleaning, thereby improving the welding production speed and efficiency of NTC resistors, increasing the production capacity of NTC resistors, and achieving high quality and good results in quality inspection and slag cleaning. Moreover, it has multiple welding mechanisms that sequentially weld each welding point of the NTC resistor, eliminating the need for frequent manual adjustment of the NTC resistor position, saving time and effort, and achieving fast welding speed and high efficiency. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 This is a schematic diagram of the structure of an automatic welding device for NTC resistors according to the present invention;

[0065] Figure 2 yes Figure 1 A schematic diagram of the structure after removing the protective plate;

[0066] Figure 3 yes Figure 2 Structural diagram after removing the exhaust device, frame, receiving rack, power box, feeding platform, and safety door. Figure 1 ;

[0067] Figure 4 yes Figure 2 Structural diagram after removing the exhaust device, frame, receiving rack, power box, feeding platform, and safety door. Figure 2 ;

[0068] Figure 5 yes Figure 2 Structural diagram after removing the exhaust device, frame, receiving rack, power box, feeding platform, and safety door. Figure 3 ;

[0069] Figure 6 yes Figure 2 Structural diagram after removing the exhaust device, frame, receiving rack, power box, feeding platform, and safety door. Figure 4 ;

[0070] Figure 7 This is a schematic diagram of the turntable mechanism of the present invention;

[0071] Figure 8 This is a schematic diagram of the fixture of the present invention;

[0072] Figure 9 This is a schematic diagram of the pre-welding visual inspection device of the present invention;

[0073] Figure 10 This is a schematic diagram of the structure of the post-welding visual inspection device of the present invention;

[0074] Figure 11 This is a schematic diagram of the welding mechanism of the present invention. Figure 1 ;

[0075] Figure 12 This is a schematic diagram of the welding mechanism of the present invention. Figure 2 ;

[0076] Figure 13 This is a schematic diagram of the fixture opening and slag removal mechanism of the present invention;

[0077] Figure 14 This is a schematic diagram of the clamping and handling mechanism of the present invention. Figure 1 ;

[0078] Figure 15 This is a schematic diagram of the clamping and handling mechanism of the present invention. Figure 2 ;

[0079] Figure 16 This is a schematic diagram of the structure of the clamp conveyor line of the present invention;

[0080] Figure 17 This is a schematic diagram of the electrode inspection mechanism of the present invention.

[0081] The annotations in the attached figures are explained as follows:

[0082] 1. Turntable mechanism; 11. Motor 1; 12. Turntable; 13. Positioning pin; 14. Positioning hole; 15. Mounting bracket 1; 16. Positioning post; 17. Photoelectric sensor 1; 18. Mounting bracket 2; 19. Photoelectric sensor 2; 110. Mounting bracket 3; 111. Photoelectric sensor 3; 112. Through hole 1;

[0083] 2. Fixture; 21. Placement base; 22. Through hole two; 23. Insertion hole; 24. Clamp cover; 241. Extension rod; 242. Pressure frame; 25. NTC resistor;

[0084] 3. Pre-welding visual inspection device; 31. Mounting bracket four; 32. Vertical plate one; 33. Slider one; 34. Slider two; 35. Light source one; 36. Camera one; 37. Lens one; 38. Bolt one; 39. Mounting block one;

[0085] 4. Post-weld visual inspection device; 41. Mounting bracket five; 42. Vertical plate two; 43. Slide plate one; 44. Camera two; 45. Lens two; 46. Light source two; 47. Bolt two; 49. Mounting block two;

[0086] 5. Welding mechanism; 51. Mounting plate one; 52. Motor two; 53. Lead screw one; 54. Slide one; 55. Welding machine body; 56. Upper welding head; 57. Slide rail one; 58. Lead screw two; 59. Motor three; 510. Slide two; 511. Long oblique hole; 512. Sliding column; 513. Mounting bracket six; 514. Slide rail two; 515. Vertical plate three; 516. Lower welding head;

[0087] 6. Clamp opening and slag removal mechanism; 60. Slide rail three; 61. Mounting frame seven; 62. Lifting device one; 63. Slide three; 64. Pressure block; 65. Mounting base one; 66. Suction head; 67. Suction hole; 68. Air blowing pipe; 69. Recess;

[0088] 7. Fixture handling mechanism; 71. Mounting frame eight; 72. Translation device one; 73. Mounting plate two; 74. Lifting device two; 75. Mounting base two; 76. Translation device two; 77. Gripper; 78. Photoelectric sensor four;

[0089] 8. Fixture conveyor line; 81. Belt conveyor; 82. Conveyor belt; 83. Protective cover; 84. Photoelectric sensor five;

[0090] 9. Electrode inspection mechanism; 91. Mounting bracket nine; 92. Slide rail four; 93. Slider three; 94. Electrode calibration block; 95. GT sensor; 96. Lifting device three; 97. Top block;

[0091] 100. Exhaust device; 101. Chassis; 102. Frame; 103. Protective plate; 104. Feeding platform; 105. Safety door; 106. Feed inlet; 107. Receiving rack; 108. Exhaust equipment; 109. Exhaust pipe; 1091. Mounting bracket. Detailed Implementation

[0092] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0093] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0094] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0095] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0096] This invention proposes an automatic welding device for NTC resistors. This automatic welding device can automatically perform pre-weld and post-weld visual inspection and slag removal on NTC resistors 25, replacing manual quality inspection and slag removal. This improves the welding production speed and efficiency of NTC resistors 25, increases the production capacity of NTC resistors 25, and provides high-quality and effective quality inspection and slag removal. Moreover, it has multiple welding mechanisms 5 that sequentially weld each welding point of the NTC resistor 25, eliminating the need for frequent manual adjustment of the NTC resistor 25 position, saving time and effort, and achieving fast welding speed and high efficiency.

[0097] Specifically, in one embodiment of the invention, such as Figures 3-6 As shown, the automatic welding equipment for NTC resistors includes a chassis 101 and a turntable mechanism 1 mounted on the chassis 101, a pre-welding visual inspection device 3, a post-welding visual inspection device 4, a welding mechanism 5, a fixture opening and slag removal mechanism 6, a fixture handling mechanism 7, and a fixture conveyor line 8, as shown. Figure 4 As shown, the pre-welding visual inspection device 3, welding mechanism 5, post-welding visual inspection device 4, fixture opening and slag removal mechanism 6, and fixture transport mechanism 7 are arranged sequentially along the rotation direction of the turntable mechanism 1; Figures 3-7 As shown, the turntable mechanism 1 is equipped with a clamp 2, such as... Figure 7As shown, the fixture 2 is equipped with an NTC resistor 25. Driven by the turntable mechanism 1, the fixture 2 rotates sequentially, passing through the pre-welding visual inspection device 3, the welding mechanism 5, the post-welding visual inspection device 4, the fixture opening and slag removal mechanism 6, and the fixture transport mechanism 7. The fixture 2 pauses for a period of time each time it passes through these mechanisms to allow them to operate. Specifically, the pre-welding visual inspection device 3 visually inspects the NTC resistor 25 on the fixture 2 to determine if it is present and to determine its position. The welding mechanism 5 welds the NTC resistor 25 on the fixture 2. The post-welding visual inspection device 4 is used to visually inspect the welded NTC resistor 25 to determine whether the welding quality is qualified, thus replacing manual quality inspection. Compared with manual quality inspection, the post-welding visual inspection device 4 is faster, more efficient, and provides better, more stable, and more efficient quality inspection. The clamp opening and slag removal mechanism 6 is used to open the clamp 2 and clean the slag on the clamp 2 and NTC resistor 25, thus replacing manual slag cleaning. The slag cleaning speed is fast, more efficient, and the slag cleaning effect and quality are high. Since there is no manual quality inspection and slag cleaning, the time spent on quality inspection and slag cleaning can be shortened, improving the welding production speed and efficiency of NTC resistor 25 and increasing the production capacity of NTC resistor 25. The clamp handling mechanism 7 is used to pick up the clamp 2 and place it on the clamp conveyor line 8 for transport, thereby realizing the automatic assembly line welding of NTC resistor 25. The welding speed is fast and efficient. The welding mechanism 5 is set according to the number of welding points of NTC resistor 25, so that one welding point corresponds to one welding mechanism 5, for example... Figures 3-6 The two welding mechanisms 5 shown correspond to the two welding points of the NTC resistor 25. The two welding mechanisms 5 weld the two welding points of the NTC resistor 25 in sequence without the need for manual adjustment of the position of the NTC resistor 25, saving time and effort, and making the welding speed fast and efficient.

[0098] The following is a detailed description of each component of the automatic welding equipment for NTC resistors.

[0099] In this embodiment, as Figure 8 As shown, the clamp 2 includes a placement base 21 and a clamping cover 24 that are hinged together, as... Figure 7 As shown, the NTC resistor 25 can be placed on the placement base 21, and the clip 24 can engage with the placement base 21 to clamp the NTC resistor 25; as Figure 8As shown, the placement base 21 is provided with a through hole 22 and an insertion hole 23. The clamping cover 24 includes a fixedly connected pressure frame 242 and an extension rod 241. The pressure frame 242 is fastened to the placement base 21 to clamp the NTC resistor 25. When the pressure frame 242 is fastened to the placement base 21, the extension rod 241 extends horizontally away from the placement base 21. That is, when the pressure frame 242 is fastened to the placement base 21, the extension rod 241 is horizontal. This design makes it easy for the pressure block 64 to descend and press down the extension rod 241 to drive the pressure frame 242 to separate from the placement base 21, thereby opening the clamp 2.

[0100] In this embodiment, as Figure 7 As shown, the turntable mechanism 1 includes: a motor 11, a turntable 12, a photoelectric sensor 111, a pair of photoelectric sensors 19, and a detection device 3. The motor 11 is fixed on the housing 101. The turntable 12 is horizontally arranged and connected to the motor 11 for transmission. The motor 11 drives the turntable 12 to rotate around the vertical central axis. The turntable 12 is provided with a through hole 112, a positioning pin 13, and a positioning hole 14. The through hole 112 is located directly below the through hole 22, and the two are connected. The interconnected design facilitates the upward movement of the lower welding head 516 through the through-hole 112 and through-hole 22 for welding the NTC resistor 25, and also facilitates the falling of welding slag from the clamp 2 and the NTC resistor 25 into the recess 69. The positioning pin 13 is tightly inserted into the insertion hole 23, and the clamp 2 is fixedly connected to the turntable 12 via the positioning pin 13 and the insertion hole 23. This design facilitates the quick and accurate installation of the clamp 2 onto the designated position on the turntable 12, and also facilitates the removal of the clamp 2 from the turntable 12 by the robotic arm. Figure 7 As shown, there are multiple clamps 2, evenly distributed along the circumference of the turntable 12. This design allows the NTC resistors 25 on each clamp 2 to be activated by the pre-welding visual inspection device 3, the welding mechanism 5, the post-welding visual inspection device 4, the clamp opening and slag removal mechanism 6, and the clamp transport mechanism 7, respectively, when the turntable 12 stops rotating. Figure 7 When fixture 2, numbered 1 on the turntable 12, undergoes visual inspection by the pre-welding visual inspection device 3, the NTC resistor 25 on fixture 2, numbered 2, is welded by the first welding mechanism 5, and the NTC resistor 25 on fixture 2, numbered 3, is welded by the second welding mechanism 5. When fixture 2, numbered 4, undergoes visual inspection by the post-welding visual inspection device 4, fixture 2, numbered 5, is opened and cleaned by the fixture opening and slag removal mechanism 6, and fixture 2, numbered 6, is taken away by the fixture transport mechanism 7. Thus, at the same time, all fixtures 2 on the turntable 12 are operated by the pre-welding visual inspection device 3, the welding mechanism 5, the post-welding visual inspection device 4, the fixture opening and slag removal mechanism 6, and the fixture transport mechanism 7, which greatly improves the welding speed and efficiency and increases the production capacity of NTC resistor 25.

[0101] In this embodiment, as Figure 3 and Figure 7 As shown, the photoelectric sensor 311 is fixedly connected to the chassis 101 via the mounting bracket 310. The detection light emitted by the photoelectric sensor 311 can vertically penetrate through the through hole 112 and the through hole 22. This design allows the photoelectric sensor 311 to detect whether there is an NTC resistor 25 on the fixture 2. If an NTC resistor 25 is detected on the fixture 2, the subsequent welding mechanism 5, the post-weld visual inspection device 4, the fixture opening and slag removal mechanism 6, and the fixture transport mechanism 7 will operate normally. Conversely, if no NTC resistor 25 is detected, the subsequent welding mechanism 5, the post-weld visual inspection device 4, the fixture opening and slag removal mechanism 6, and the fixture transport mechanism 7 can be controlled not to operate when encountering the fixture 2, thereby saving time, improving welding speed and efficiency, and avoiding meaningless operations by the subsequent welding mechanism 5, the post-weld visual inspection device 4, the fixture opening and slag removal mechanism 6, and the fixture transport mechanism 7 on the fixture 2 without an NTC resistor 25.

[0102] In this embodiment, as Figure 3 and Figure 7 As shown, a pair of photoelectric sensors 19 are fixedly connected to the chassis 101 via a mounting bracket 18. The detection light emitted by the photoelectric sensors 19 can pass through the clamp 2 in the open state, and the detection light can be blocked by the clamp 2 in the closed state. This design can be used to detect whether the clamp 2 is closed, so as to avoid affecting the subsequent welding mechanism 5 due to the clamp 2 not being closed or being accidentally opened.

[0103] In this embodiment, the detection device three includes a mounting bracket 15, a positioning post 16, and a photoelectric sensor 17. The positioning post 16 is vertically slidably mounted on the mounting bracket 15. The positioning post 16 can be inserted into the positioning hole 14 when it moves upward, and can be detected by the photoelectric sensor 17 when it moves downward. This design serves the following purpose:

[0104] ① The photoelectric sensor 17 is used to detect whether the positioning post 16 is in a fallen state, so as to avoid interference with the turntable 12;

[0105] ② The positioning post 16 is vertically slidably mounted on the mounting bracket 15. The positioning post 16 is lifted by hand and inserted into the positioning hole 14 to perform benchmark positioning and calibration of the turntable 12. This serves as the benchmark positioning for debugging. The other mechanisms of the automatic welding equipment for NTC resistors are all fine-tuned with reference to this positioning benchmark point. When the point is lost due to subsequent maintenance or equipment failure, the origin can be found by inserting the positioning post 16 into the positioning hole 14.

[0106] In this embodiment, as Figures 3-7As shown, the photoelectric sensor 111, the photoelectric sensor 19, and the pre-welding visual inspection device 3 are located at the same detection position and inspect the same fixture 2.

[0107] In this embodiment, as Figure 9 As shown, the pre-welding visual inspection device 3 includes: a mounting bracket 31, a camera 36, ​​a light source 35, a lens 37, and a lifting device 4, as shown. Figures 3-6 As shown, the mounting bracket 31 is fixedly connected to the chassis 101; as Figure 9 As shown, a vertical plate 32 is vertically fixed on the mounting bracket 31. The vertical plate 32 has scale lines. This design allows for real-time monitoring of the positions of the camera 36 and light source 35 during adjustment, enabling rapid positioning of the camera 36 and light source 35. A slider 33 and a slider 34 are vertically slidably mounted on the vertical plate 32. The camera 36 is fixedly mounted on slider 33, and the light source 35 is fixedly mounted on slider 34. The light source 35 is located directly below the camera 36. Figures 3-6 As shown, the turntable 12 is located below the light source 35. The pre-welding visual inspection device 3 captures video footage of the clamp 2 on the turntable 12 from top to bottom for visual inspection. The lens 37 is located between the camera 36 and the light source 35 and is fixedly connected to the camera 36. The lifting device 4 is mounted on the mounting frame 31 and connected to the camera 36 and the light source 35, used to drive the camera 36 and the light source 35 to move vertically on the mounting frame 31. Specifically, as shown... Figure 9 As shown, the lifting device four includes a mounting block 39 and a bolt 38. The mounting block 39 is fixedly mounted on the vertical plate 32, and the bolt 38 spirally passes through the mounting block 39 and is rotatably connected to the slider 33 and the slider 34. Figure 9 The image shows two lifting devices. One bolt 38 is rotatably connected to the slider 33, and the other bolt 38 is rotatably connected to the slider 34. Tightening the bolt 38 to rotate the device drives the camera 36 and the light source 35 to move vertically on the vertical plate 32, adjusting the position of the camera 36 and the light source 35 to easily obtain clear video images.

[0108] In this embodiment, as Figure 10 As shown, the structure and working principle of the post-weld visual inspection device 4 are the same as those of the pre-weld visual inspection device 3. The post-weld visual inspection device 4 includes: a mounting bracket 41, a camera 44, a light source 46, a lens 45, and a lifting device 5. Figures 3-6 As shown, the mounting bracket 41 is fixedly connected to the chassis 101; as Figure 10As shown, a vertical plate 42 is vertically fixedly mounted on the mounting frame 41. A sliding plate 43 and a light source 46 are vertically slidably mounted on the vertical plate 42. A camera 44 is fixedly connected to the sliding plate 43. The light source 46 is located directly below the camera 44. The turntable 12 is located below the light source 46. The post-weld visual inspection device 4 captures video footage of the clamp 2 on the turntable 12 from top to bottom for visual inspection. A lens 45 is located between the camera 44 and the light source 46 and is fixedly connected to the camera 44. A lifting device 5 is mounted on the mounting frame 41 and connected to the camera 44 and the light source 46, used to move the camera 44 and the light source 46. The lifting device 5 moves vertically on the mounting bracket 41. Specifically, the lifting device 5 includes a mounting block 2 49 and a bolt 2 47. The mounting block 2 49 is fixedly connected to the vertical plate 2 42. The bolt 2 47 spirally passes through the mounting block 2 49 and is rotatably connected to the sliding plate 1 43 and the light source 2 46. There are two lifting devices 5. One bolt 2 47 is rotatably connected to the sliding plate 1 43, and the other bolt 2 47 is rotatably connected to the light source 2 46. One bolt 2 47 rotates to drive the sliding plate 1 43 to lift the camera 2 44 and the lens 2 45. The other bolt 2 47 rotates to lift the light source 2 46, adjusting the position of the camera 2 44, the lens 2 45, and the light source 2 46 to facilitate obtaining clear video images.

[0109] In this embodiment, as Figure 10 As shown, the vertical plate 42 is also provided with scale lines so that the real-time position of the camera 44 and the light source 46 can be monitored at any time during the adjustment of the position of the camera 44 and the light source 46, and the camera 44 and the light source 46 can be quickly adjusted into place.

[0110] In this embodiment, there are multiple welding mechanisms 5, arranged sequentially along the rotation direction of the turntable mechanism 1. Each welding mechanism 5 welds one welding point of the NTC resistor 25, for example... Figures 3-6 As shown, the NTC resistor 25 has two soldering points, and two soldering mechanisms 5 are set accordingly. Each of the two soldering mechanisms 5 solders one soldering point of the NTC resistor 25. With this design, there is no need to manually adjust the position of the NTC resistor 25, which saves time and effort and makes the soldering speed fast and efficient.

[0111] Specifically, such as Figure 11 and Figure 12As shown, the welding mechanism 5 includes: a translation device three, a welding machine body 55, a lifting device six, a lifting device seven, an upper welding head 56, and a lower welding head 516. The translation device three is fixedly connected to the machine housing 101. The translation device three includes a mounting plate one 51 and a motor two 52, a lead screw one 53, and a slide one 54 mounted on the mounting plate one 51. The lead screw one 53 is rotatably mounted on the mounting plate one 51 and is connected to the motor two 52 for transmission. The motor two 52 drives the lead screw one 53 to rotate. The slide one 54... The slide is slidably mounted on mounting plate 51 and threadedly connected to lead screw 53. The lead screw 53 rotates, driving slide 54 to translate along the lead screw. The welding machine body 55 is fixed to the upper end of slide 54 and is driven to translate by translation device 3. Lifting device 6 is connected to the welding machine body 55 or translation device 3. An upper welding head 56 is located below lifting device 6, and the upper welding head 56 moves vertically via lifting device 6. Preferably, lifting device 6 is located inside the welding machine body 55. Figure 11 and Figure 12 As shown.

[0112] In this embodiment, the lifting device seven is connected to the translation device three. The lifting device seven is equipped with a lower welding head 516, which is located directly below the upper welding head 56. The lifting device seven drives the lower welding head 516 to move vertically, as shown below. Figure 5 As shown, the lower welding head 516 moves upward through the first through hole 112 and the second through hole 22, and then works with the lower welding head 56 to weld one welding point of the NTC resistor 25. Specifically, as shown... Figure 11 and Figure 12As shown, the lifting device 7 includes a slide rail 1 57, a lead screw 2 58, a motor 3 59, a slide bracket 2 510, a slide column 512, a mounting bracket 6 513, a slide rail 2 514, and a vertical plate 3 515. The slide rail 1 57 is horizontally fixedly mounted on the slide bracket 1 54. The lead screw 2 58 is rotatably mounted on the slide rail 1 57. The motor 3 59 is fixedly mounted on the slide rail 1 57 and is connected to the lead screw 2 58 for driving the lead screw 2 58 to rotate. The slide bracket 2 510 is slidably mounted on the slide rail 1 57 and is threadedly connected to the lead screw 2 58. The rotation of the lead screw 2 58 drives the slide bracket 2 510 to translate along the lead screw 2 58 on the slide rail 1 57. The translation direction is parallel to the translation direction of the slide bracket 1 54. The vertical plate of the slide bracket 2 510 is provided with... The device has an elongated oblique hole 511. One end of the sliding column 512 extends into the elongated oblique hole 511 and slides along the length of the elongated oblique hole 511. The other end of the sliding column 512 is fixedly connected to the mounting bracket 6 513. The mounting bracket 6 513 is vertically slidably mounted on the slide rail 2 514. The slide rail 2 514 is vertically fixedly mounted on the vertical plate 3 515. The vertical plate 3 515 is vertically fixedly mounted on the slide frame 1 54. The lower welding head 516 is fixedly connected to the mounting bracket 6 513. The screw 2 58 rotates and drives the slide frame 2 510 to translate along the screw 2 58 on the slide rail 1 57, which in turn drives the sliding column 512 to slide along the elongated oblique hole 511, drives the mounting bracket 6 513 to slide vertically on the slide rail 2 514, and drives the lower welding head 516 to rise and fall.

[0113] In this embodiment, as Figure 4 , Figure 5 and Figure 17 As shown, the automatic welding equipment for NTC resistors also includes an electrode inspection mechanism 9, which is used to inspect and calibrate the upper welding head 56 and the lower welding head 516 to ensure that the welding quality of the welding mechanism 5 remains constant and does not decrease.

[0114] Specifically, such as Figure 17As shown, the electrode inspection mechanism 9 includes: a mounting frame 91, an electrode calibration block 94, a GT sensor 95, and a lifting device 96. The mounting frame 91 is fixedly connected to the chassis 101. A slide rail 92 is vertically fixedly mounted on the mounting frame 91, and a slider 93 is vertically slidably mounted on the slide rail 92. The electrode calibration block 94 is fixedly connected to the slider 93. The GT sensor 95 is signal-connected to the electrode calibration block 94 through the slider 93. The lifting device 96 is fixedly mounted on the mounting frame 91. A top block 97 is provided at the movable end of the lifting device 96. The lifting device 96 pushes the electrode calibration block 94 upward to contact the upper welding head 56. Then, the value fed back by the GT sensor 95 is used to determine whether the position of the upper welding head 56 is accurate. Similarly, the top block 97 drives the electrode calibration block 94 downward to contact the lower welding head 516. Then, the value fed back by the GT sensor 95 is used to determine whether the position of the lower welding head 516 is accurate. Once the abnormal position of the upper welding head 56 and the lower welding head 516 is detected, a timely reminder for repair can be made to avoid affecting the welding quality of the NTC resistor 25 and ensure that the high-quality welding of the welding mechanism 5 remains constant.

[0115] In this embodiment, as Figure 13 As shown, the clamp opening and slag removal mechanism 6 includes a clamp opening mechanism and a slag removal mechanism. The clamp opening mechanism includes: a mounting frame 61, a lifting device 62, and a slide 63. The mounting frame 61 is fixedly connected to the chassis 101; the lifting device 62 is fixedly connected to the mounting frame 61; a slide rail 60 is vertically fixedly mounted on the mounting frame 61, and the slide 63 is vertically slidably mounted on the slide rail 60. The slide 63 is connected to the lifting device 62, and the lifting device 62 drives the slide 63 to move up and down along the slide rail 60. A pressure block 64 is fixedly mounted on the slide 63. Figure 6 As shown, the pressure block 64 descends to press down the extension rod 241, causing the pressure frame 242 to separate from the placement seat 21, thereby opening the clamp 2. The purpose of opening the clamp 2 is twofold: firstly, to facilitate the subsequent slag removal mechanism to clean the slag; and secondly, to allow the NTC resistor 25 on the clamp 2 to be directly removed from the clamp 2 by the manual removal of the clamp 2 from the clamp conveyor line 8, without the need for manual opening of the clamp 2. This reduces the manual action of opening the clamp 2, saving time and effort and helping to improve welding efficiency.

[0116] In this embodiment, as Figure 13As shown, the slag removal mechanism includes: an air blowing pipe 68 and a mounting base 65. The air blowing pipe 68 is connected to a mounting frame 61 and is used to blow air into the clamp 2. The mounting base 65 is located below the slide 63 and is fixedly connected to the mounting frame 61. The upper surface of the mounting base 65 is provided with a recess 69, and a plurality of suction holes 67 are provided in the recess 69. The plurality of suction holes 67 are connected to a suction head 66, and the suction head 66 is connected to an air extraction device 108. Figure 1 and Figure 2 As shown, this allows the suction head 66 to pick up the solder slag on the fixture 2 and the NTC resistor 25 through multiple suction holes 67, such as... Figure 6 As shown, the welding slag penetrates through the second through hole 22 and the first through hole 112 and falls into the pit 69. It is then sucked into the suction hole 67 and carried away. Air is slowly blown onto the clamp 2 and the NTC resistor 25 through the air blowing pipe 68 to blow away the welding slag on the clamp 2 and the NTC resistor 25. Then, it is sucked with the suction head 66 to suck away the welding slag along with the air, so as to prevent welding slag residue on the clamp 2 and the NTC resistor 25.

[0117] In this embodiment, as Figure 14 and Figure 15 As shown, the clamping and handling mechanism 7 includes: a mounting frame 71, a translation device 72, a lifting device 74, a robotic arm, and a photoelectric sensor 78. The mounting frame 71 is fixedly connected to the chassis 101; the translation device 72 is fixedly connected to the mounting frame 71; the lifting device 74 is connected to the translation device 72 via a mounting plate 73, and the translation device 72 drives the lifting device 74 to move horizontally; the robotic arm is connected to the lifting device 74 via a mounting base 75, and the lifting device 74 drives the robotic arm to move vertically. The robotic arm is located above the turntable 12. Driven by translation device 1 72 and lifting device 2 74, the robotic arm approaches the turntable 12 and grips the clamp 2 on the turntable 12, sending it to the clamp conveyor line 8. Commonly, translation device 1 72 and lifting device 2 74 can be rodless cylinders, and the robotic arm can be an electric gripper 77 or a pneumatic gripper 77. It has translation device 2 76 and a pair of grippers 77. The pair of grippers 77 move closer to or further away from each other to grip the clamp 2 under the drive of translation device 2 76. The photoelectric sensor 4 78 is installed on the robotic arm to detect whether the robotic arm has gripped the clamp 2, preventing the robotic arm from running empty towards the clamp conveyor line 8.

[0118] In this embodiment, because it is difficult for the gripper 77 to directly grip the NTC resistor 25, the gripper 77 is used to grip the fixture 2 to complete the unloading of the NTC resistor 25 from the turntable mechanism 1. The reasons why it is difficult for the gripper 77 to directly grip the NTC resistor 25 are as follows:

[0119] ① Clamping space issue: Because there is not much space left on clamp 2 for the jaw 77 to contact the NTC resistor 25, the space for clamping the NTC resistor 25 is limited;

[0120] ②Product accuracy issue: The NTC resistor 25 itself has different accuracy. It may be that the clamp 2 is too tight. In this case, the NTC resistor 25 may not be able to be removed, or the clamp 2 may be lifted up with it. Therefore, in order to ensure the success rate of clamping and maintain the efficient unloading of the NTC resistor 25 from the turntable mechanism 1, it is designed to use the gripper 77 to clamp the clamp 2 to complete the unloading of the NTC resistor 25 from the turntable mechanism 1.

[0121] In this embodiment, as Figure 16 As shown, the clamp conveyor line 8 includes: a belt conveyor 81, a protective cover 83, and a photoelectric sensor 84. The belt conveyor 81 is mounted on the chassis 101. The robotic arm, driven by the translation device 72 and the lifting device 74, clamps the clamp 2 and places it onto the conveyor belt 82 of the belt conveyor 81 for transport. The protective cover 83 is located at the end of the conveying direction of the belt conveyor 81 and is used to gather and collect the clamp 2 to prevent it from falling off the belt conveyor 81, making it easier for workers to remove the clamp 2 from the belt conveyor 81. The photoelectric sensor 84 is located at the entrance of the protective cover 83 and is used to detect whether the clamp 2 can smoothly enter the protective cover 83. When the clamp 2 accumulates inside the protective cover 83 due to the lack of manual removal for a long time, the photoelectric sensor 84 senses the accumulation of clamp 2 and can trigger an alarm to prompt the manual removal of the material in time.

[0122] In this embodiment, as Figures 3-6 As shown, a smoke exhaust pipe 109 is provided next to the welding mechanism 5. The smoke exhaust pipe 109 is fixedly installed on the mounting bracket 1091, and the mounting bracket 1091 is fixedly connected to the chassis 101. Figure 2 As shown, a frame 102 is provided on the chassis 101, and an exhaust device 100 is provided on the frame 102. The exhaust device 100 is connected to the exhaust pipe 109. After the exhaust device 100 is started, it uses the exhaust pipe 109 to extract the welding fumes generated during the operation of the welding mechanism 5, so as to protect the surrounding environment of the automatic welding equipment for NTC resistors.

[0123] In this embodiment, as Figure 1 and Figure 2 As shown, a receiving rack 107 is provided next to the chassis 101. After the worker takes away the clamp 2 from the belt conveyor 81, he can place the clamp 2 on the receiving rack 107.

[0124] In this embodiment, as Figure 1As shown, the frame 102 is equipped with a guard plate 103 and a feeding platform 104, thereby opening a feeding port 106 at the feeding position of the turntable mechanism 1. The clamp 2 with the NTC resistor 25 to be soldered is placed on the turntable 12 through the feeding port 106. In order to protect the safety of workers and prevent hands from being put into the turntable 12 when it rotates, a safety door 105 is provided at the feeding port 106. When a hand approaches the feeding port 106, it can be sensed by the safety door 105, and then an alarm will be issued to remind the worker to pay attention to safety.

[0125] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An automatic welding device for NTC resistors, characterized in that, The system includes a chassis and a turntable mechanism mounted on the chassis, a pre-welding visual inspection device, a post-welding visual inspection device, a welding mechanism, a fixture opening and slag removal mechanism, a fixture transport mechanism, and a fixture conveyor line. The pre-welding visual inspection device, welding mechanism, post-welding visual inspection device, fixture opening and slag removal mechanism, and fixture transport mechanism are arranged sequentially along the rotation direction of the turntable mechanism. The turntable mechanism is equipped with a clamp, on which an NTC resistor is clamped. Driven by the turntable mechanism, the clamp rotates and passes sequentially through the pre-welding visual inspection device, the welding mechanism, the post-welding visual inspection device, the clamp opening and slag removal mechanism, and the clamp transport mechanism. The clamp stops for a period of time each time it passes through the pre-welding visual inspection device, the welding mechanism, the post-welding visual inspection device, the clamp opening and slag removal mechanism, and the clamp transport mechanism, allowing these devices to operate on the clamp. The pre-welding visual inspection device is used to visually inspect the NTC resistors on the fixture to determine whether there are NTC resistors on the fixture and to obtain the position of the NTC resistors on the fixture. The welding mechanism is used to weld NTC resistors on the fixture; The post-welding visual inspection device is used to visually inspect the NTC resistors after welding in order to determine whether the welding quality is qualified. The clamp opening and slag removal mechanism is used to open the clamp and remove the slag from the clamp and the NTC resistor. The clamp handling mechanism is used to pick up clamps and place them on the clamp conveyor line for transport. The clamp includes a hinged base and a cover. The NTC resistor can be placed on the base, and the cover can be fastened to the base to clamp the NTC resistor. The base is provided with a through hole and a socket. The cover includes a fixedly connected pressure frame and an extension rod. The pressure frame fastens to the base to clamp the NTC resistor. When the pressure frame is fastened to the base, the extension rod extends horizontally away from the base. The turntable mechanism includes: Motor 1 is fixed on the chassis; A turntable is horizontally set and connected to a motor. The motor drives the turntable to rotate around a vertical central axis. The turntable is provided with a through hole, a positioning pin and a positioning hole. The through hole is located directly below the through hole and the two are connected to each other. The positioning pin is tightly inserted into the insertion hole. There are multiple clamps, which are evenly distributed along the circumference of the turntable. The photoelectric sensor three is fixedly connected to the chassis. The detection light emitted by the photoelectric sensor three can penetrate vertically upward through the through hole one and through hole two to detect whether there is an NTC resistor on the fixture. A pair of photoelectric sensors are fixedly connected to the chassis. The detection light emitted by the photoelectric sensors can pass through the clamp in the open state, and the detection light can be blocked by the clamp in the closed state, thereby detecting whether the clamp is closed. The detection device three includes a mounting bracket one connected to the chassis, a positioning post and a photoelectric sensor one. The positioning post is vertically slidably mounted on the mounting bracket one. The positioning post can be inserted into the positioning hole when it moves upward, and can be detected by the photoelectric sensor one when it moves downward.

2. The automatic welding equipment for NTC resistors as described in claim 1, characterized in that, The pre-welding visual inspection device includes: Mounting bracket four is fixedly connected to the chassis; Camera 1 is vertically slidably mounted on mounting bracket 4; Light source one is located directly below camera one and is vertically slidably mounted on mounting bracket four, with the turntable located below light source one; Lens 1 is located between camera 1 and light source 1, and is fixedly connected to camera 1; The lifting device four is located on the mounting frame four and is connected to the camera one and the light source one. It is used to drive the camera one and the light source one to move vertically on the mounting frame four.

3. The automatic welding equipment for NTC resistors as described in claim 1, characterized in that, The post-welding visual inspection device includes: Mounting bracket five is fixedly connected to the chassis; Camera 2 is vertically slidably mounted on mounting bracket 5; Light source two is located directly below camera two and is vertically slidably mounted on mounting bracket five, with the turntable located below light source two; Lens 2 is located between camera 2 and light source 2, and is fixedly connected to camera 2; Lifting device five is located on mounting frame five and connected to camera two and light source two, and is used to drive camera two and light source two to move vertically on mounting frame five.

4. The automatic welding equipment for NTC resistors as described in claim 1, characterized in that, There are multiple welding mechanisms, which are arranged sequentially along the rotation direction of the turntable mechanism. Each welding mechanism welds one welding point of the NTC resistor. The welding mechanism includes: Translation device three is fixedly connected to the chassis; The welding machine body is connected to the translation device three, which drives the welding machine body to translate. Lifting device six is ​​connected to the welding machine body or translation device three. An upper welding head is provided below the lifting device six, and the upper welding head is moved vertically by the lifting device six. Lifting device 7 is connected to translation device 3. Lifting device 7 is equipped with a lower welding head, which is located directly below the upper welding head. Lifting device 7 drives the lower welding head to move vertically. After the lower welding head moves up through through hole 1 and through hole 2, it works with the lower welding head to weld one welding point of the NTC resistor.

5. The automatic welding equipment for NTC resistors as described in claim 4, characterized in that, It also includes an electrode inspection mechanism for inspecting and calibrating the upper and lower welding heads, the electrode inspection mechanism comprising: Mounting bracket nine is fixedly connected to the chassis; The electrode calibration block is vertically slidably mounted on mounting bracket nine. The GT sensor is connected to the electrode calibration block signal. Lifting device three is fixed on mounting frame nine and connected to electrode calibration block. It is used to drive the electrode calibration block to rise and fall. When the electrode calibration block rises, it can contact the upper welding head. When the electrode calibration block falls, it can contact the lower welding head.

6. The automatic welding equipment for NTC resistors as described in claim 1, characterized in that, The clamp opening and slag removal mechanism includes a clamp opening mechanism and a slag removal mechanism, wherein the clamp opening mechanism includes: Mounting bracket seven is fixedly connected to the chassis; Lifting device one is fixedly connected to mounting frame seven; The slide three is vertically slidably mounted on the mounting frame seven and connected to the lifting device one. The lifting device one drives the slide three to move up and down. A pressure block is fixed on the slide three. When the pressure block descends, it can press down the extension rod to drive the pressure frame to separate from the placement seat, thereby opening the clamp. The slag removal mechanism includes: An air blowing pipe, connected to mounting bracket seven, is used to blow air into the clamp; Mounting base one is located below slide three and is fixedly connected to mounting bracket seven. The upper surface of mounting base one is provided with a recess, and multiple suction holes are provided in the recess. The multiple suction holes are connected to the suction head. The suction head picks up the solder slag on the fixture and NTC resistor through the multiple suction holes. The solder slag falls into the recess after passing through through hole two and through hole one.

7. The automatic welding equipment for NTC resistors as described in claim 1, characterized in that, The clamp handling mechanism includes: Mounting bracket eight is fixedly connected to the chassis; Translation device one is fixedly connected to mounting bracket eight; Lifting device two is connected to translation device one, and the translation device one drives lifting device two to move horizontally. The robotic arm is connected to the second lifting device. The second lifting device drives the robotic arm to move vertically. The robotic arm is located above the turntable. Driven by the first translation device and the second lifting device, the robotic arm approaches the turntable and picks up the clamps on the turntable and sends them to the clamp conveyor line. Photoelectric sensor four is installed on the robotic arm to detect whether the robotic arm is gripping a fixture.

8. The automatic welding equipment for NTC resistors as described in claim 7, characterized in that, The fixture conveyor line includes: A belt conveyor is mounted on a chassis. The robotic arm, driven by translation device one and lifting device two, picks up a clamp and places it onto the belt conveyor for transport. A protective cover, located at the end of the belt conveyor in the conveying direction, is used to gather and collect the clamps to prevent them from falling off the belt conveyor. Photoelectric sensor five is located at the entrance of the protective cover and is used to detect whether the fixture can enter the protective cover smoothly.

Images