Automatic halogen lamp filament welding device

Abstract

This invention relates to the field of halogen lamp filament welding technology, specifically to an automatic halogen lamp filament welding device, comprising: a discharge trough, vertically extending through a receiving fixture, the upper part of the discharge trough having a flared structure; an atmosphere manufacturing unit, comprising: an inflation chamber, positioned directly above the receiving fixture, with an inflation unit on its side wall for inflating the chamber, and an inflation port at the lower part of the inflation chamber; and a suction chamber, positioned directly below the receiving fixture, with a fan positioned at its lower part. The fan's start-up time is synchronized with the start-up time of the inflation unit. When the fan and inflation unit are started, air flows from top to bottom between the inflation chamber and the suction chamber, and the horizontal cross-sectional area of ​​the airflow is larger than the vertical projected area of ​​the receiving fixture. This invention reduces the amount of debris generated during welding and also cleans the receiving fixture itself, improving welding quality.

Description

Technical Field

[0001] This invention relates to the field of halogen lamp filament welding technology, specifically to an automatic halogen lamp filament welding device. Background Technology

[0002] When halogen lamps are manufactured, they need to go through a spot welding process. The filament is placed on a fixture for positioning, and then the lamp body with leads is transferred to the fixture so that the two leads on the lamp body are connected to the two ends of the filament respectively. The filament and the two leads on the lamp body are then welded together by a resistance spot welding machine.

[0003] The welded halogen lamp has a similar structure to the filament fixing structure of a halogen lamp disclosed in Chinese Patent Publication No. CN218769413U.

[0004] However, existing spot welding processes have the following problems. First, in existing halogen lamp filament spot welding processes, the filaments of halogen lamps are mainly tungsten wires. Tungsten begins to oxidize above 400°C, and oxidation accelerates above 500°C. During resistance spot welding, the local temperature of the weld point far exceeds this threshold. The tungsten wire is easily oxidized at the high temperature of spot welding, producing oxide debris that flakes off. Some processes use alcohol protection, but alcohol evaporates rapidly at the high welding temperature, making it impossible to guarantee effective protection of the workpiece throughout the welding process. The detached debris falls into the fixture. Because the filament diameter is extremely fine, the fixture positioning groove requires high precision. Residual debris will affect the fixture's normal reception and precise positioning of the filament, easily leading to poor filament placement stability and unstable contact resistance during subsequent spot welding, resulting in incomplete welds and insufficient weld strength.

[0005] Secondly, even with the use of a protective atmosphere device, it is impossible to completely avoid the generation of debris during the spot welding process. Moreover, most existing protective atmosphere devices use open nozzles to supply gas to the area around the fixture and lack airflow guidance, which causes the protective gas to diffuse in a disordered state in the open space. The disordered airflow will blow up the debris remaining in the fixture, causing the debris to drift disorderly in the welding area. At the same time, the loss of protective gas is also relatively high. Summary of the Invention

[0006] To address the aforementioned issues, an automatic halogen lamp filament welding device is provided. This device incorporates a discharge trough and an atmosphere-generating unit consisting of an inflation chamber, an inflation unit, an intake chamber, and a matching fan. Utilizing the synchronized start and stop operation of the inflation unit and the fan, a stable downward protective airflow is formed around the receiving fixture, providing full coverage. This structure isolates external air throughout the spot welding process, effectively suppressing filament oxidation and debris generation under high-temperature conditions. It overcomes the shortcomings of traditional protective media, such as uneven protection and short effective time, preventing debris accumulation from affecting filament positioning accuracy and reducing welding defects such as incomplete welds.

[0007] To address the problems of existing technologies, the present invention provides an automatic welding device for halogen lamp filaments, comprising a spot welding machine and a receiving fixture, wherein the spot welding machine includes a spot welding head vertically disposed above the receiving fixture, and the receiving fixture is used to receive the filament; The automated welding equipment also includes: A discharge chute is vertically opened through the receiving fixture, and the upper part of the discharge chute has a flared structure; An atmosphere manufacturing unit, the atmosphere manufacturing unit comprising: An air chamber is located directly above the receiving fixture. An air inflation unit for inflating the air chamber is provided on the side wall of the air chamber. An air inflation port is provided at the bottom of the air chamber. An air intake chamber is located directly below the receiving fixture. A fan is installed at the bottom of the air intake chamber. The start-up time of the fan is synchronized with the start-up time of the inflation unit. When the fan and the inflation unit are started, the air between the inflation chamber and the air intake chamber flows from top to bottom to form an airflow, and the horizontal cross-sectional area of ​​the airflow is larger than the vertical projected area of ​​the receiving fixture.

[0008] Preferably, a flow equalization plate is horizontally arranged in the inflation chamber, which divides the inflation chamber into an air inlet chamber and an air equalization chamber from top to bottom, and the air equalization chamber is connected to the inflation port.

[0009] Preferably, the atmosphere manufacturing unit further includes: A flow guiding unit is disposed in the air chamber. The flow guiding unit includes a flow guiding component that moves horizontally. The flow guiding component passes through the air chamber horizontally and slides in cooperation with the side wall of the air chamber. The flow guiding unit has two flow guiding channels. The upper flared structure of the discharge channel is composed of two slopes. The two flow guiding channels are respectively located directly above the two slopes.

[0010] Preferably, the flow guiding component includes: There are two flow guides, which are respectively installed through both sides of the air chamber. The two flow guides can be close to each other or far apart from each other. The first linear actuator has two parts, each disposed on one side of one of the two guide sections, for driving the guide sections to move.

[0011] Preferably, the guide portion includes: The first guide block moves horizontally and penetrates the side wall of the inflatable chamber; The second guide block is provided in two parts and is symmetrical about the first guide block. The second guide block moves synchronously with the first guide block. A gap is formed between the first guide block and the second guide block. After the two guide parts come into contact, the two gaps arranged along the guide parts together form the guide groove.

[0012] Preferably, the upper part of the air intake chamber has a recessed area, the recessed area is concave, and a chip removal unit is provided at the bottom of the recessed area.

[0013] Preferably, the chip removal unit includes: A rotating groove is disposed at the bottom of the recessed area and communicates with the recessed area, and the vertical cross-section of the rotating groove is circular; A rotating roller is rotatably disposed in the rotating groove along the axis of the rotating groove; A collection trough is formed on the side wall of the rotating roller to collect debris.

[0014] Preferably, the air intake chamber is further provided with: There are two air intake channels, which are symmetrically distributed about the chip removal unit and communicate with the recessed area. The fan is located at the bottom of the air intake channel. A filter screen is inclinedly disposed at the upper part of the air intake channel, and the filter screen is inclined toward the bottom of the recessed area.

[0015] Preferably, the upper surface of the filter screen is smooth and has filter holes evenly distributed.

[0016] Preferably, the lower part of the receiving fixture is provided with a second linear actuator for driving the receiving fixture to rise and fall, and a corrugated sleeve is vertically provided between the receiving fixture and the air intake chamber, with the two ends of the corrugated sleeve being fixedly connected to the bottom of the receiving fixture and the upper part of the air intake chamber, respectively.

[0017] The advantages of this invention compared to the prior art are: 1. This invention, by adding a discharge trough and an atmosphere-generating unit consisting of an inflation chamber, an inflation unit, an intake chamber, and a matching fan, utilizes the synchronized start-stop operation of the inflation unit and the fan to create a fully covered and stably flowing downward protective airflow around the receiving fixture. This structure isolates external air throughout the spot welding process, effectively suppressing filament oxidation and debris generation under high-temperature conditions. It overcomes the shortcomings of traditional protective media, such as uneven protection and short effective time, preventing debris accumulation from affecting filament positioning accuracy and reducing welding defects such as incomplete welds. Simultaneously, the directional airflow can autonomously blow away debris inside the receiving fixture and discharge trough, eliminating debris dispersion caused by disordered airflow, improving gas utilization, and adapting to large-scale precision welding operations.

[0018] 2. By configuring a flow equalization plate and a switchable split-type flow guide structure inside the air chamber, the flow equalization plate first divides the air chamber cavity and homogenizes the input gas, balancing the air pressure and airflow velocity within the chamber. This allows the protective atmosphere to evenly envelop the welding area, further suppressing debris generation at the source. Then, the first linear actuator controls the opening and closing of the flow guide section, enabling free switching between welding protection and post-weld beam purging modes. The split-type flow guide block quickly forms the flow guide channel, concentrating the airflow and increasing the exhaust speed without increasing equipment energy consumption. This precisely purges residual debris from the discharge chute slope, balancing welding quality and debris removal efficiency, significantly improving equipment adaptability and flexibility.

[0019] 3. By incorporating a recessed area with a chip removal unit in the air intake chamber, coupled with a sloping, smooth filter screen and a sealing corrugated sleeve structure, the recessed area gathers scattered debris, preventing secondary contamination of the welding area. Combined with rotating rollers and a collection trough, automated chip removal is achieved, reducing manual maintenance workload. Simultaneously, the filter screen performs solid-gas separation, protecting the fan and circulation equipment. Furthermore, the smooth surface of the filter screen reduces the probability of debris residue. Additionally, the corrugated sleeve dynamically seals the gaps created by fixture lifting, preventing protective gas leakage, stabilizing the overall airflow environment, reducing gas costs, and comprehensively improving the equipment's sealing, filtration, and chip removal performance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of an automatic halogen lamp filament welding device according to the present invention.

[0021] Figure 2 This is a side view of an automatic halogen lamp filament welding device according to the present invention.

[0022] Figure 3 This invention relates to an automatic welding device for halogen lamp filaments. Figure 2 Schematic diagram of cross-section at point AA.

[0023] Figure 4 This invention relates to an automatic welding device for halogen lamp filaments. Figure 3 A magnified view of a portion of point B in the middle.

[0024] Figure 5 This invention relates to an automatic welding device for halogen lamp filaments. Figure 3 A magnified view of a portion of point C.

[0025] Figure 6 This is a cross-sectional three-dimensional schematic diagram of an automatic welding device for halogen lamp filaments according to the present invention.

[0026] Figure 7 This invention relates to an automatic welding device for halogen lamp filaments. Figure 6 A magnified view of a portion of point D.

[0027] Figure 8 This is a partial cross-sectional three-dimensional schematic diagram of an automatic halogen lamp filament welding device according to the present invention. Figure 1 .

[0028] Figure 9 This invention relates to an automatic welding device for halogen lamp filaments. Figure 8 A magnified view of a portion of point E in the middle.

[0029] Figure 10 This is a partial cross-sectional three-dimensional schematic diagram of an automatic halogen lamp filament welding device according to the present invention. Figure 2 .

[0030] The following are the labels in the diagram: 1. Spot welding machine; 11. Spot welding head; 2. Receiving fixture; 21. Discharge chute; 3. Atmosphere manufacturing unit; 31. Inflation chamber; 311. Inflation unit; 312. Flow equalization plate; 32. Suction chamber; 321. Fan; 322. Recessed area; 323. Chip removal unit; 3231. Rotating chute; 3232. Rotating roller; 3233. Collection chute; 3234. Collection channel; 3235. Rotary actuator; 324. Suction channel; 325. Filter screen; 33. Flow guiding unit; 331. Flow guiding assembly; 3311. Flow guiding chute; 3312. First flow guiding block; 3313. Second flow guiding block; 332. First linear actuator; 4. Lamp body; 5. Filament; 6. Second linear actuator; 7. Corrugated sleeve. Detailed Implementation

[0031] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1 to 4 , Figure 6 , Figure 7 , Figure 9 and Figure 10 An automatic welding device for halogen lamp filaments includes a spot welding machine 1 and a receiving fixture 2. The spot welding machine 1 includes a spot welding head 11 vertically arranged above the receiving fixture 2. The receiving fixture 2 is used to receive the filament 5. The automated welding equipment also includes: The discharge chute 21 is vertically opened through the receiving fixture 2, and the upper part of the discharge chute 21 has a flared structure. Atmosphere manufacturing unit 3, the atmosphere manufacturing unit 3 comprising: An air chamber 31 is located directly above the receiving fixture 2. An air inflation unit 311 for inflating the air chamber 31 is provided on the side wall of the air chamber 31. An air inflation port is provided at the lower part of the air chamber 31. An air intake chamber 32 is located directly below the receiving fixture 2. A fan 321 is installed at the lower part of the air intake chamber 32. The start-up time of the fan 321 is synchronized with the start-up time of the inflation unit 311. When the fan 321 and the inflation unit 311 are started, the air between the inflation chamber 31 and the air intake chamber 32 flows from top to bottom to form an airflow, and the horizontal cross-sectional area of ​​the airflow is larger than the vertical projected area of ​​the receiving fixture 2.

[0033] In actual use, the lamp body 4 and filament 5 to be processed are first placed sequentially inside the receiving fixture 2. The receiving fixture 2 is used to complete the positioning and receiving of the filament 5 and the lamp body 4, providing basic support for the subsequent welding process. After the filament 5 and the lamp body 4 are in place, the spot welding machine 1, the gas filling unit 311, and the blower 321 that starts and stops synchronously with the gas filling unit 311 are started. The gas filling unit 311 fills the gas filling chamber 31 with a suitable protective gas. The protective gas is output through the gas filling port at the bottom of the gas filling chamber 31. With the suction action of the blower 321, a stable airflow from top to bottom is formed between the gas filling chamber 31 and the suction chamber 32. The horizontal cross section of this airflow can completely cover the receiving fixture 2, so that the receiving fixture 2 and the filament 5 and the lamp body 4 to be welded above it are all within the protective gas envelope. Subsequently, the spot welding machine 1 is controlled to operate, causing the spot welding head 11 to move vertically downwards and cooperate with the receiving fixture 2 to complete the spot welding operation between the filament 5 and the pin of the lamp body 4. Throughout the welding process, the continuously flowing protective gas airflow can isolate the external air in real time, avoiding the problem of oxidation and detachment of the tungsten filament 5 under high-temperature spot welding environment. After the welding process is completed, the continuously running gas filling unit 311 and fan 321 maintain a directional airflow state. The airflow passes through the vertically opened discharge groove 21 on the receiving fixture 2, and the directional high-pressure airflow is used to blow away the inside of the receiving fixture 2 and the flared upper area of ​​the discharge groove 21, cleaning up the trace amount of oxide debris generated or attached during the welding process. The debris is transported downwards with the airflow to the inside of the suction chamber 32, finally completing the entire filament 5 spot welding and debris cleaning operation.

[0034] By adding a discharge trough 21 and an atmosphere manufacturing unit 3 consisting of an inflation chamber 31, an inflation unit 311, an air intake chamber 32, and a matching fan 321, and utilizing the synchronous start-stop working mode of the inflation unit 311 and the fan 321, a top-down protective gas flow with complete coverage and stable flow direction is formed around the receiving fixture 2. On the one hand, it can provide all-round gas protection for the filament 5 and the weld point throughout the entire spot welding process of the filament 5, effectively isolating air and reducing the probability of filament 5 oxidation and oxidation debris generation under high-temperature spot welding conditions. It solves the defects of short protection time and uneven protection in traditional processes, and avoids residual oxidation debris accumulating inside the receiving fixture 2 and affecting the filament. 5. The positioning accuracy and placement stability reduce welding defects such as incomplete welding and insufficient weld strength, significantly improving the quality and pass rate of halogen lamp filament 5 spot welding products. On the other hand, the orderly and directional flow of protective gas can directly act on the receiving fixture 2 and the discharge trough 21 area, which can autonomously blow away the trace debris generated during the welding operation. At the same time, it abandons the traditional open and disordered gas supply mode, avoiding the problem of debris being scattered in the welding area by disordered airflow. Moreover, the directional airflow can improve the utilization efficiency of protective gas and reduce the loss caused by ineffective diffusion of protective gas, further optimizing the overall welding operation environment of the equipment and adapting to the refined and large-scale halogen lamp filament 5 welding production.

[0035] Reference Figure 4 and Figure 7 The air chamber 31 is horizontally provided with a flow equalization plate 312, which divides the air chamber 31 from top to bottom into an air inlet chamber and an air equalization chamber, and the air equalization chamber is connected to the air inlet.

[0036] After the inflation unit 311 delivers protective gas into the inflation chamber 31, the protective gas will first be temporarily stored in the air inlet chamber. Then the airflow will pass evenly through the horizontally arranged flow equalization plate 312. After being diverted and homogenized by the flow equalization plate 312, it will enter the air equalization chamber. Finally, it will be output downward through the inflation port connected to the air equalization chamber. With the suction effect of the fan 321 at the bottom of the suction chamber 32, a stable downward airflow will be formed on the outside of the receiving fixture 2.

[0037] By adding a flow equalization plate 312 inside the inflation chamber 31 and dividing the inflation chamber 31 into an air inlet chamber and an air equalization chamber, the protective gas input from the inflation unit 311 can be homogenized. This improves the problem of local airflow concentration and uneven airflow distribution after the protective gas enters the inflation chamber 31, avoids the situation where the local protective gas distribution is too small and thus cannot form an effective protective atmosphere, and ensures that the flow rate and pressure of the protective gas discharged from the inflation port are consistent. This comprehensively wraps the filament 5 and welding point on the receiving fixture 2, further improving the stability and integrity of the protective atmosphere in the welding area, reducing the generation of filament 5 oxide debris from the source, and improving the overall utilization rate of the protective gas, while reducing the resource waste caused by disordered gas flow.

[0038] Reference Figures 6 to 8 The atmosphere manufacturing unit 3 further includes: A flow guiding unit 33 is disposed in the air chamber 31. The flow guiding unit 33 includes a flow guiding component 331 that is movable in the horizontal direction. The flow guiding component 331 passes through the air chamber 31 in the horizontal direction and slides in cooperation with the side wall of the air chamber 31. The flow guiding unit 33 has two flow guiding channels 3311. The upper flared structure of the discharge channel 21 is composed of two slopes. The two flow guiding channels 3311 are respectively located directly above the two slopes.

[0039] A flow guiding unit 33 is added inside the inflation chamber 31. During the welding operation, the flow guiding component 331 remains in its initial state to ensure that the protective gas flows down normally to complete the anti-oxidation protection. After the filament 5-point welding process is completed, the flow guiding component 331 can be controlled to slide horizontally relative to the side wall of the inflation chamber 31 according to the cleaning requirements. The two flow guiding channels 3311 are used to guide the protective airflow discharged from the inflation chamber 31, changing the original planar exhaust mode, so that the airflow is concentrated and delivered downward. At the same time, relying on the layout structure of the flow guiding channel 3311 and the upper slope of the discharge channel 21 corresponding to each other, the directional airflow is accurately directed to the upper slope area of ​​the discharge channel 21.

[0040] By utilizing the movable flow guide component 331 in conjunction with the dedicated flow guide channel 3311, the discharged protective gas is subjected to directional beam treatment, reducing the exhaust flow area and concentrating the airflow energy. This increases the exhaust flow rate without increasing the operating power of the gas charging unit 311, while simultaneously achieving precise airflow alignment with the upper slope of the discharge chute 21. This allows for targeted cleaning of residual oxide debris on the slope and inside the receiving fixture 2, improving debris cleaning efficiency and effectiveness. In addition, it effectively constrains the diffusion range of the protective gas, reducing gas loss caused by ineffective diffusion and lowering the overall gas consumption cost of the equipment. It is suitable for integrated high-precision welding and debris cleaning operations.

[0041] Reference Figure 6 , Figure 8 and Figure 10The flow guiding component 331 includes: There are two flow guides, which are respectively installed on both sides of the air chamber 31. The two flow guides can be close to each other or far apart from each other. Two first linear actuators 332 are provided and are respectively disposed on one side of the two guide sections for driving the guide sections to move.

[0042] When filament 5-point welding is required, the first linear actuators 332 on both sides drive the corresponding guide parts to move away from each other, release the airflow beam restriction, restore the large-area planar exhaust mode of the air chamber 31, and ensure that a complete and stable protective atmosphere is formed around the receiving fixture 2. When the welding process is completed and the debris needs to be cleaned, the first linear actuators 332 on both sides drive the two guide parts to move synchronously towards each other, so that the two guide parts cooperate to form a guide channel, guide the downward airflow, and concentrate the airflow to complete the debris blowing operation.

[0043] Two independent linear actuators 332 are used to control the two guide sections to start, stop and move independently, so as to freely switch the opening and closing state of the guide structure. During the welding stage, the guide section is opened to ensure the coverage of the protective gas and meet the anti-oxidation welding requirements of filament 5. During the debris cleaning stage, the guide section is closed to gather the airflow and improve the purging ability. It takes into account the dual functions of welding protection and debris cleaning, flexibly adapts to the usage requirements of different operation stages of the equipment, improves the flexibility and continuity of equipment operation, and optimizes the overall production operation process.

[0044] Reference Figure 4 and Figure 7 The flow guide includes: The first guide block 3312 moves horizontally and penetrates the side wall of the air chamber 31; There are two second guide blocks 3313, which are symmetrical about the first guide block 3312. The second guide block 3313 moves synchronously with the first guide block 3312. A gap is formed between the first guide block 3312 and the second guide block 3313. After the two guide parts come into contact, the two gaps arranged along the guide parts together form the guide groove 3311.

[0045] The second guide block 3313 is installed through the side wall of the air chamber 31 and slides in cooperation with the air chamber 31.

[0046] The flow guide is composed of a first flow guide block 3312 and symmetrically arranged second flow guide blocks 3313. All flow guide blocks are slidably engaged with the side wall of the air chamber 31. The first flow guide block 3312 and the second flow guide block 3313 can move synchronously under the drive of the first linear actuator 332. The flow guide on one side is adapted to the airflow through the reserved gap. When the two flow guides come close to each other and complete the docking, the symmetrically distributed gaps on both sides can cooperate with each other to form a complete flow guide groove 3311, thereby realizing the beam guidance operation of the downward protective airflow.

[0047] The flow guide section is composed of a split structure, which can increase the speed of forming the flow guide channel 3311 in a single operation compared to the integral structure, resulting in higher production efficiency.

[0048] Reference Figure 3 and Figure 5 The upper part of the air intake chamber 32 has a recessed area 322, which is concave, and a chip removal unit 323 is provided at the bottom of the recessed area 322.

[0049] A recessed area 322 with an inward concave structure is provided on the upper part of the air intake chamber 32. When the airflow carrying the oxidized debris passes through the discharge groove 21 of the receiving fixture 2, the debris will fall directly into the recessed area 322 with the downward airflow. Relying on the concave gathering structure of the recessed area 322, the scattered debris is limited and guided, preventing the debris from spreading to the surrounding area of ​​the air intake chamber 32. This causes all the debris to converge at the bottom of the recessed area 322, and then the chip removal unit 323 assembled at the bottom of the recessed area 322 will uniformly receive and discharge the accumulated debris.

[0050] By utilizing the recessed area 322 at the top of the air intake chamber 32, debris is gathered and collected, which structurally restricts the debris from scattering and effectively prevents small debris from being lifted up again by the airflow and flowing back to the welding area. This reduces the risk of secondary contamination from the source. At the same time, all debris automatically gathers at the bottom of the recessed area 322, making it easier for the chip removal unit 323 to complete the chip removal operation. This reduces the frequency and difficulty of manual cleaning and simplifies the later maintenance process of the equipment.

[0051] Reference Figure 5 , Figure 6 and Figure 10 The chip removal unit 323 includes: A rotating groove 3231 is disposed at the bottom of the recessed area 322 and communicates with the recessed area 322. The vertical cross-section of the rotating groove 3231 is circular. The rotating roller 3232 is rotatably disposed in the rotating groove 3231 along the axis of the rotating groove 3231; A collection trough 3233 is formed on the side wall of the rotating roller 3232 for collecting debris.

[0052] A collection channel 3234 is vertically arranged at the lower part of the rotating groove 3231. A rotary driver 3235 for driving the rotating roller 3232 to rotate is provided on one side of the rotating roller 3232. When the rotating roller 3232 rotates, the collection groove 3233 provided on the rotating roller 3232 rotates synchronously with the rotating roller 3232. When the debris on the receiving fixture 2 is blown by the airflow to the recessed area 322, the debris is guided to the bottom of the recessed area 322, that is, the collection groove 3233 of the rotating roller 3232, under the action of the recessed structure of the recessed area 322. The rotating roller 3232 rotates periodically to discharge the debris in the collection groove 3233, avoiding manual cleaning. The rotary driver 3235 is preferably a servo motor.

[0053] Reference Figure 5 The air intake chamber 32 is also equipped with: There are two suction channels 324, which are symmetrically distributed about the chip removal unit 323 and communicate with the recessed area 322. The fan 321 is located at the bottom of the suction channel 324. The filter screen 325 is inclinedly disposed on the upper part of the air intake channel 324, and the filter screen 325 is inclined toward the bottom of the recessed area 322.

[0054] A symmetrically arranged intake channel 324 with a connecting structure is provided on both sides of the recessed area 322, and a filter screen 325 is installed at an incline on the upper part of the intake channel 324. When the protective gas carrying debris enters the recessed area 322, large debris particles fall directly into the bottom debris discharge unit 323 under the guidance of gravity and the structure of the recessed area 322. The inclined filter screen 325 can intercept and filter the airflow, blocking solid debris and allowing gas to penetrate the filter screen 325 and enter the intake channel 324. Finally, the fan 321 completes the gas transportation and recovery operation. The intercepted debris will slide down the inclined filter screen 325 to the bottom of the recessed area 322.

[0055] The symmetrically arranged air intake channels 324 can balance the air pressure inside the air intake chamber 32, ensuring the stability of the downward airflow. Combined with the inclined filter screen 325, it can achieve automatic solid-gas separation, effectively intercepting the oxide debris carried in the airflow and preventing the debris from entering the blower 321 and the internal circulation equipment. This protects the equipment components and prevents blockage. At the same time, the inclined structure allows the intercepted debris to slide down to the bottom of the recessed area 322 on its own, eliminating the need to clean the debris accumulated on the surface of the filter screen 325. This balances filtration protection and debris collection, improving the stability of equipment operation.

[0056] Reference Figures 1 to 10 The upper surface of the filter screen 325 is smooth and has filter holes evenly distributed.

[0057] The surface of the conventional filter screen 325 is rough, and debris is easily embedded in the filter pores on the surface of the screen. Long-term accumulation will cause the filter pores to become blocked, directly reducing the exhaust efficiency of the intake channel 324 and increasing the operating load of the fan 321. Moreover, the embedded debris is difficult to fall off on its own, requiring frequent disassembly, cleaning and replacement, which increases the maintenance workload.

[0058] The upper surface of the filter screen 325 is set as a smooth plane, and filter holes of uniform size are evenly opened on the smooth end face. When the impurity-laden airflow comes into contact with the filter screen 325, the filter holes are responsible for completing the gas sieving operation and intercepting solid oxide debris. The smooth upper end face can reduce the friction between the debris and the filter screen. The intercepted debris cannot adhere to the filter screen surface and will quickly slide down the inclined end face of the filter screen 325 to the bottom of the recessed area 322, completing the separation and collection of debris.

[0059] The smooth end face can fundamentally reduce the attachment points of fine debris, reduce the probability of debris clogging the filter holes, ensure the smoothness of exhaust in the intake channel 324, stabilize the operating load of the fan 321, reduce the energy consumption of the fan 321, and at the same time, the debris intercepted by the filter can slide off and collect on its own, greatly reducing the frequency of disassembly, cleaning and replacement of the filter screen 325, further simplifying the daily maintenance process of the equipment, and extending the service life of the filter screen 325 and the entire intake structure.

[0060] Reference Figure 6 and Figure 8 The lower part of the receiving fixture 2 is provided with a second linear actuator 6 for driving the receiving fixture 2 to rise and fall. A corrugated sleeve 7 is vertically provided between the receiving fixture 2 and the air intake chamber 32. The two ends of the corrugated sleeve 7 are fixedly connected to the bottom of the receiving fixture 2 and the upper part of the air intake chamber 32, respectively.

[0061] The receiving fixture 2 is driven by the second linear actuator 6 to complete the lifting and adjustment, so as to adapt to the working height of different processes such as workpiece loading and unloading, welding and debris cleaning. At the same time, a corrugated sleeve 7 is vertically installed between the bottom of the receiving fixture 2 and the upper part of the suction chamber 32. The corrugated sleeve 7 is fixed at both ends to cover the dynamic gap between the receiving fixture 2 and the suction chamber 32. During the lifting and lowering of the receiving fixture 2, the corrugated sleeve 7 can simultaneously complete the extension and compression actions, adapting to the height change throughout the process and maintaining the gap sealing state.

[0062] The retractable corrugated sleeve 7 can dynamically seal the gap generated during the lifting and lowering of the receiving fixture 2, effectively blocking the protective gas leakage channel, avoiding resource waste caused by gas leakage, reducing gas costs, and maintaining the relative airtightness of the airflow space between the inflation chamber 31 and the suction chamber 32, ensuring that the internal airflow direction and velocity are always stable and not affected by the height adjustment of the receiving fixture 2, thus comprehensively protecting the anti-oxidation effect of the filament 5 welding and the ability to blow away debris, and improving the overall operational stability of the equipment.

[0063] Working principle: In use, the second linear actuator 6 first drives the receiving fixture 2 to descend to its lowest position. At this point, the distance between the receiving fixture 2 and the lower part of the inflation chamber 31 is at its maximum, and the corrugated sleeve 7 is compressed. Subsequently, the conveying device for conveying the lamp body 4 transports the lamp body 4 onto the receiving fixture 2, and then the filament 5 is placed into the receiving fixture 2. A camera is installed on the side of the receiving fixture 2 to visually determine whether the filament 5 is correctly placed into the receiving fixture 2. The process of placing the filament 5 can be completed automatically by a robotic arm.

[0064] After the filament 5 and lamp body 4 are placed, the second linear actuator 6 drives the receiving fixture 2 to rise to the highest position and reset. Then, the spot welding machine 1 starts, and the spot welding head 11 in the spot welding machine 1 descends. The spot welding head 11 vertically penetrates the gas filling chamber 31 and extends from the bottom of the gas filling chamber 31. Before the spot welding head 11 contacts the filament 5 and lamp body 4 on the receiving fixture 2, the blower 321 and the gas filling unit 311 start synchronously. The gas filling unit 311 fills the gas filling chamber 31 with protective gas. After being evenly distributed by the flow equalization plate 312, the gas flows from top to bottom. The flow equalization plate 312 is used to ensure that the protective gas flowing from top to bottom is evenly distributed in the gas filling chamber 31. Under the combined action of the blower 321 and the gas filling unit 311, the airflow formed by the protective gas will pass through the receiving fixture 2. By forming a stable protective gas airflow, a stable protective atmosphere is formed around the receiving fixture 2, which avoids the generation of more debris due to oxidation when the spot welding machine 1 welds the filament 5 onto the lamp body 4. After welding is completed, the second linear actuator 6 drives the receiving fixture 2 to descend, and then removes the welded halogen lamp. During this process, the inflation unit 311 and the blower 321 continue to operate. At the same time, the two first linear actuators 332 drive the two guide parts to approach each other. When the two guide parts contact each other, two guide channels 3311 are formed. The protective gas filled into the inflation chamber 31 by the inflation unit 311 can only be discharged through the guide channels 3311. Although there are two guide chambers, the sum of the horizontal areas of the two guide chambers is much smaller than the horizontal area of ​​the inflation chamber 31. Therefore, the guide chambers can not only guide the airflow discharged from the inflation chamber 31, but also increase the flow rate of the discharged airflow. This allows the discharged airflow to be directed towards the slope above the discharge chute 21, blowing away the residual debris on the slope, and can also increase the flow rate of the gas discharged from the inflation chamber 31 without changing the power of the inflation unit 311, thereby improving the cleaning effect.

[0065] After being blown down, the debris is carried by the airflow into the recessed area 322 of the suction chamber 32. Since inclined filter screens 325 are installed on both sides of the bottom of the recessed area 322, the debris gradually moves towards the bottom of the recessed area 322 under the guidance of these two mutually inclined filter screens 325. To improve the smoothness of debris movement, the filter screens 325 are made of plastic material with a smooth surface. The airflow can only enter the suction channel 324 through the filter holes on the filter screens 325 and is discharged by the fan 321. Therefore, most debris will not remain on the filter screens 325. Furthermore, the filter screens 325 are designed to be detachable; if a large amount of debris is found on the filter screens 325 during regular maintenance, they can be removed and replaced. In addition, to fully utilize the protective gas, the fan 321 is equipped with an external circulation device. This circulation device purifies and concentrates the protective gas discharged through the fan 321, thereby enabling the reuse of the protective gas and reducing its operating costs. The debris is guided by the filter screen 325 and the bottom of the recessed area 322 and falls into the bottom of the recessed area 322. The debris is received by the collection groove 3233 on the rotating roller 3232. The rotating driver 3235 periodically drives the rotating roller 3232 to rotate and discharge the debris accumulated in the collection groove 3233.

[0066] As a supplement, since the receiving fixture 2 can be raised and lowered by the action of the second linear actuator 6, a corrugated sleeve 7 is provided between the receiving fixture 2 and the suction chamber 32. By providing the corrugated sleeve 7, the protective gas can be prevented from overflowing between the receiving fixture 2 and the suction chamber 32, and the guiding effect on the flow of the protective gas is improved.

[0067] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. An automatic welding device for halogen lamp filaments, comprising a spot welding machine (1) and a receiving fixture (2), wherein the spot welding machine (1) comprises a spot welding head (11) vertically disposed above the receiving fixture (2), and the receiving fixture (2) is used to receive the filament (5); Its features are, The automated welding equipment also includes: The discharge trough (21) is vertically opened through the receiving fixture (2), and the upper part of the discharge trough (21) has a flared structure; Atmosphere manufacturing unit (3), the atmosphere manufacturing unit (3) includes: An air chamber (31) is located directly above the receiving fixture (2). An air inflation unit (311) for inflating the air chamber (31) is provided on the side wall of the air chamber (31). An air inflation port is provided at the lower part of the air chamber (31). An air intake chamber (32) is located directly below the receiving fixture (2). A fan (321) is provided at the lower part of the air intake chamber (32). The start time of the fan (321) is synchronized with the start time of the inflation unit (311). When the fan (321) and the inflation unit (311) are started, the air between the inflation chamber (31) and the air intake chamber (32) flows from top to bottom to form an airflow. The horizontal cross-sectional area of ​​the airflow is greater than the vertical projection area of ​​the receiving fixture (2).

2. The automatic halogen lamp filament welding equipment according to claim 1, characterized in that, A flow equalization plate (312) is horizontally arranged in the inflation chamber (31). The flow equalization plate (312) divides the inflation chamber (31) from top to bottom into an air inlet chamber and an air equalization chamber. The air equalization chamber is connected to the inflation port.

3. An automatic halogen lamp filament welding device according to claim 1 or 2, characterized in that, The atmosphere manufacturing unit (3) further includes: A flow guiding unit (33) is disposed in the air chamber (31). The flow guiding unit (33) includes a flow guiding component (331) that moves horizontally. The flow guiding component (331) passes through the air chamber (31) horizontally and slides with the side wall of the air chamber (31). The flow guiding unit (33) has two flow guiding channels (3311). The upper flared structure of the discharge channel (21) is composed of two slopes. The two flow guiding channels (3311) are located directly above the two slopes.

4. The automatic halogen lamp filament welding equipment according to claim 3, characterized in that, The flow guiding component (331) includes: Two flow guides are provided, which are respectively installed on both sides of the air chamber (31). The two flow guides can be close to each other or far apart from each other. Two first linear actuators (332) are provided and are respectively disposed on one side of the two guide sections for driving the guide sections to move.

5. The automatic halogen lamp filament welding equipment according to claim 4, characterized in that, The flow guide includes: The first guide block (3312) moves horizontally and penetrates the side wall of the air chamber (31); Two second guide blocks (3313) are provided and are symmetrical about the first guide block (3312). The second guide block (3313) moves synchronously with the first guide block (3312). A gap is formed between the first guide block (3312) and the second guide block (3313). After the two guide parts come into contact, the two gaps arranged along the guide parts together form the guide groove (3311).

6. The automatic halogen lamp filament welding equipment according to claim 1, characterized in that, The upper part of the air intake chamber (32) has a recessed area (322), which is recessed, and a chip removal unit (323) is provided at the bottom of the recessed area (322).

7. The automatic halogen lamp filament welding equipment according to claim 6, characterized in that, The chip removal unit (323) includes: A rotating groove (3231) is provided at the bottom of the recessed area (322) and communicates with the recessed area (322). The vertical cross-section of the rotating groove (3231) is circular. A rotating roller (3232) is rotatably disposed in the rotating groove (3231) along the axis of the rotating groove (3231); A collection trough (3233) is provided on the side wall of the rotating roller (3232) for collecting debris.

8. The automatic halogen lamp filament welding equipment according to claim 6, characterized in that, The air intake chamber (32) is also equipped with: There are two suction channels (324), which are symmetrically distributed about the chip removal unit (323) and communicate with the recessed area (322). The fan (321) is located at the bottom of the suction channel (324). A filter screen (325) is inclinedly disposed on the upper part of the air intake channel (324), and the filter screen (325) is inclined toward the bottom of the recessed area (322).

9. The automatic halogen lamp filament welding equipment according to claim 8, characterized in that, The upper surface of the filter screen (325) is smooth and has filter holes evenly distributed.

10. The automatic halogen lamp filament welding equipment according to claim 1, characterized in that, The lower part of the receiving fixture (2) is provided with a second linear actuator (6) for driving the receiving fixture (2) to rise and fall. A corrugated sleeve (7) is vertically provided between the receiving fixture (2) and the air intake chamber (32). The two ends of the corrugated sleeve (7) are fixedly connected to the bottom of the receiving fixture (2) and the upper part of the air intake chamber (32), respectively.

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