Resistance welding all-in-one machine

Abstract

The invention discloses a resistance welding all-in-one machine, and relates to the technical field of resistance welding, and the resistance welding all-in-one machine is characterized in that a bearing rail is connected with a driving mechanism, and the bearing rail is sequentially provided with a feeding position, a tin dispensing position and a heating position in the product conveying direction; the feeding mechanism comprises a feeding assembly and a material moving assembly, the feeding assembly is used for providing resistors, and the material moving assembly is arranged at the feeding position and used for moving the resistors to products from the feeding assembly; the solder paste dispensing mechanism is arranged at the solder paste dispensing position and is used for dispensing solder paste to the product; the heating mechanism is arranged at the heating position and comprises a hot air gun and an air nozzle, the air nozzle is arranged at one end of the hot air gun, the hot air gun is used for generating hot air, the bearing track is provided with a protection assembly, the protection assembly is provided with an interval space, and the air nozzle is matched with the interval space and blows hot air to the product through the interval space so that the resistor can be welded to the product. According to the resistance welding all-in-one machine provided by the technical scheme, the problem that the waterproof ring is aged due to heating can be prevented.

Description

Technical Field

[0001] This invention relates to the field of resistance welding technology, and in particular to an integrated resistance welding machine. Background Technology

[0002] In the current electronics manufacturing industry, surface mount technology (SMT) has become the mainstream circuit assembly technology. In a heated environment, solder paste melts, flows, and then solidifies, thereby achieving a permanent mechanical and electrical connection between the component electrodes and the circuit board pads. With the diversification of product functions and the increasing harshness of operating environments, many electronic products, such as industrial resistance welding machines and outdoor measuring equipment, have placed higher protection requirements on their internal core modules or connectors. These modules or connectors are typically equipped with sealing and waterproof rings (such as O-rings, rubber gaskets, etc.) to ensure stable operation in harsh environments such as humidity and dust.

[0003] However, when this product with a waterproof ring is used as a component and soldered using the traditional reflow soldering process, the high-temperature environment required by the reflow soldering process can easily cause the waterproof ring material to age, harden, deform, or even melt, resulting in the permanent failure of its elastic sealing performance. Summary of the Invention

[0004] The main objective of this invention is to provide an integrated resistance welding machine that addresses the technical problem of sealing performance failure in products with waterproof rings during reflow soldering processes.

[0005] To achieve the above objectives, the present invention provides a resistance welding integrated machine for resistive welding to a product, the resistance welding integrated machine comprising:

[0006] A carrying track is connected to a drive mechanism, which drives the product to move along the carrying track. The carrying track is sequentially provided with a loading position, a soldering position and a heating position along the product conveying direction. The feeding mechanism includes a feeding assembly and a transferring assembly. The feeding assembly is used to provide the resistor, and the transferring assembly is located at the feeding position and is used to transfer the resistor from the feeding assembly to the product. A solder paste application mechanism, located at the solder application position, is used to apply solder paste to the product; and A heating mechanism is provided at the heating position. The heating mechanism includes a hot air gun and a nozzle. The nozzle is located at one end of the hot air gun. The hot air gun is used to generate hot air. The bearing rail is provided with a protective component. The protective component has a gap space. The nozzle is adapted to the gap space and blows hot air toward the product through the gap space to weld the resistance to the product.

[0007] In one embodiment, the protective component includes a first cover plate and a second cover plate, the space between the first cover plate and the second cover plate is formed, and the second cover plate and / or the second cover plate is further provided with a heat dissipation mechanism.

[0008] In one embodiment, the heat dissipation mechanism is configured as a cooling channel, which is located inside the second cover plate and contains coolant.

[0009] In one embodiment, the driving mechanism includes a lateral movement assembly, which includes a lateral movement guide rail, a connecting block, and a vertical cylinder. The lateral movement guide rail is disposed on the bearing rail, the connecting block is slidably disposed on the lateral movement guide rail, and the vertical cylinder is disposed on the lateral movement connecting block. The product has an insertion hole, and the vertical cylinder is connected to an insertion pin and drives the insertion pin to move and insert into the insertion hole. The lateral movement force is...

[0010] In one embodiment, the drive mechanism further includes a lateral movement force assembly. At least two sets of the lateral movement assembly are provided along the conveying direction of the carrying track, and a synchronizing element connects the two sets of the lateral movement assembly. One set of the lateral movement assembly is connected to the lateral movement force assembly; and / or, The bearing track is provided with a third cover plate, the third cover plate is provided with a clearance hole, and the pin is also movable within the clearance hole.

[0011] In one embodiment, the material transfer assembly includes a material transfer motor, a swing arm, and a guide block. The material transfer motor is connected to the swing arm, the guide block is provided with a guide groove, the swing arm is connected to the material transfer arm, and drives the material transfer arm to slide along the guide groove, so that the material transfer arm has a suction position and a discharge position. The material transfer arm picks up the resistor at the suction position and attaches the resistor to the product at the discharge position.

[0012] In one embodiment, the material transfer assembly further includes a horizontal support rail and a vertical support rail. The horizontal support rail is connected to a horizontal support block, the horizontal support block is connected to a vertical support block, the vertical support block is connected to the vertical support rail, and the vertical support rail is connected to the material transfer arm; and / or, The material transfer assembly is provided with a first sensor and a second sensor. The first sensor is located at the material suction position, and the second sensor is located at the second position. The swing arm is provided with a trigger, which is adapted to trigger the first sensor and the second sensor.

[0013] In one embodiment, the feeding assembly includes a feeding motor, a feeding roll, and a take-up roll. The feeding roll is used to provide resistance material strip. The resistance material strip has a drive hole. The feeding motor is connected to a drive disk and a feeding drive wheel. The drive disk has a drive column. The drive column is inserted into the drive hole and drives the resistance material strip to move. The drive wheel is connected to a drive belt. The drive belt is connected to the take-up roll and drives the take-up roll to rotate.

[0014] In one embodiment, the solder paste application mechanism includes a support frame, a solder paste application driver, and a mounting frame. The mounting frame is equipped with a solder paste gun. The solder paste application driver is connected to the mounting frame and drives the mounting frame to move. The solder paste application driver is located on the support frame.

[0015] In one embodiment, the resistance welding integrated machine further includes a product conveying component, which includes a product loading tray and a product receiving tray, respectively located at both ends of the carrying track.

[0016] This invention employs a combination of a hot air gun and nozzles to precisely confine heat to the resistor leads and pads to be soldered, ensuring accurate hot airflow at the solder joints. This eliminates the need for excessive positioning and clamping force on the entire product to guarantee uniform heating. Waterproof rings and other heat-sensitive components are kept away from the solder joints, preventing prolonged exposure to high temperatures and thus avoiding aging, hardening, deformation, or performance failure of the waterproof rings due to heat, ensuring long-term sealing reliability. This invention abandons the traditional reflow oven that heats the entire board at high temperatures, innovatively employing a localized, precise heating method to decouple soldering pressure from the sealing structure, protecting the integrity of the waterproof rings. This integrated machine automates the processes of material loading, soldering, and heating, inheriting the efficiency advantages of SMT automated production. Furthermore, because the heating is localized and non-contact (hot air), the heat input to each solder joint can be precisely controlled by adjusting parameters such as hot air temperature, airflow speed, nozzle distance, and application time. This allows for better adaptation to the requirements of different products and solder pastes, significantly improving soldering yield. Attached Figure Description

[0017] 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 the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of an angle structure of an embodiment of the resistance welding integrated machine provided by the present invention; Figure 2 This is a schematic diagram of another angle of an embodiment of the resistance welding integrated machine provided by the present invention; Figure 3 This is a schematic diagram of the structure of the support track in an embodiment of the resistance welding integrated machine provided by the present invention; Figure 4 This is a schematic diagram of the structure of the third cover plate in an embodiment of the resistance welding integrated machine provided by the present invention; Figure 5 This is a schematic diagram of the feeding assembly of an embodiment of the resistance welding integrated machine provided by the present invention; Figure 6 This is a schematic diagram of the material transfer assembly in an embodiment of the resistance welding integrated machine provided by the present invention; Figure 7 This is a schematic diagram of the heating mechanism in an embodiment of the resistance welding integrated machine provided by the present invention; Figure 8 This is a schematic diagram of the solder paste application mechanism in an embodiment of the resistance welding integrated machine provided by the present invention.

[0019] Explanation of icon numbers: 100. Load-bearing rail; 110. Lateral movement assembly; 111. Lateral movement guide rail; 112. Connecting block; 113. Vertical cylinder; 114. Pin; 120. Lateral movement force assembly; 130. Synchronizer; 140. Third cover plate; 141. Clearance hole; 200. Feeding assembly; 210. Feeding motor; 220. Feeding roll; 230. Recycle roll; 240. Drive disc; 241. Drive column; 250. Drive wheel; 300. Material transfer assembly; 310. Material transfer motor; 320. Swing arm; 330. Guide block; 331. Guide groove; 340. Material transfer arm; 350. Horizontal support rail; 351. Horizontal support block; 360. Vertical support rail; 361. Vertical support block; 370. First sensor; 380. Second sensor; 390. Trigger; 400 Solder paste dispensing mechanism; 410 Support frame; 420 Solder paste dispensing drive component; 430 Mounting bracket; 500. Heating mechanism; 510. Hot air gun; 520. Air nozzle; 530. First cover plate; 540. Second cover plate; 550. Cooling channel; 600. Product loading tray; 610. Product receiving tray.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] 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.

[0022] 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 specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] 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. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "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.

[0024] In the existing technology, when products with waterproof rings are used as components and soldered using the traditional reflow soldering process, the high-temperature environment required by the reflow soldering process can easily cause the waterproof ring material to age, harden, deform, or even melt, resulting in permanent failure of its elastic sealing performance.

[0025] This invention proposes an integrated resistance welding machine.

[0026] Please see Figure 1 and Figure 2As shown, in one embodiment of the present invention, the resistance welding integrated machine is used to weld resistors to a product. The resistance welding integrated machine includes: a support rail 100, a feeding mechanism, a solder paste dispensing mechanism 400, and a heating mechanism 500. The support rail 100 is connected to a driving mechanism, which drives the product to move along the support rail 100. The support rail 100 is sequentially provided with a feeding position, a solder paste dispensing position, and a heating position along the product conveying direction. The feeding mechanism includes a feeding component 200 and a transferring component 300. The feeding component 200 is used to provide resistors, and the transferring component 300... Component 300 is located at the loading position and is used to transfer resistors from the loading component 200 to the product; solder paste dispensing mechanism 400 is located at the solder dispensing position and is used to apply solder paste to the product; heating mechanism 500 is located at the heating position, and heating mechanism 500 includes a hot air gun 510 and a nozzle 520. The nozzle 520 is located at one end of the hot air gun 510, and the hot air gun 510 is used to generate hot air. The carrying rail 100 is provided with a protective component, and the protective component has a gap space. The nozzle 520 is adapted to the gap space and blows hot air toward the product through the gap space to solder the resistors to the product.

[0027] It should be noted that the resistance welding integrated machine also includes a worktable, with the support rail 100, feeding mechanism, solder paste dispensing mechanism 400, and heating mechanism 500 all mounted on the worktable. The support rail 100 is the conveyor line for the entire equipment, used to carry and transport products. It is preferably a linear guide rail or a synchronous belt conveyor line, which is connected to a drive mechanism, such as a stepper motor or servo motor. The drive mechanism drives the material belt carrying the products along the support rail 100 sequentially through each station according to a preset speed.

[0028] refer to Figure 3 and Figure 4 As shown, the support rail 100 is equipped with a protective component in the area corresponding to the heating position. This protective component is preferably a cover or shroud structure made of a high-temperature resistant material (such as stainless steel or engineering ceramics). In a specific implementation, the protective component has a spacer, which is a channel or window that runs vertically or laterally. Its size and shape are precisely designed to allow the nozzle 520 of the heating mechanism 500 to extend into or be aligned with the heating element, while effectively isolating other areas of the product except for the welding points, especially the parts equipped with waterproof rings.

[0029] The feeding mechanism is responsible for supplying and transporting resistors. The loading assembly 200 is used to provide resistors in an orderly manner, and can take the form of a vibratory feeder, tape feeder, or tray. The transfer assembly 300 is located at the loading position. The transfer assembly 300 may include a multi-degree-of-freedom robotic arm with a pick-and-place device, such as a vacuum nozzle or pneumatic gripper, installed at its end. It first picks up a resistor from the loading assembly 200, then moves it to the product that has been precisely positioned at the loading position, and finally accurately places the two leads of the resistor on the corresponding pad holes or pad positions on the product. In specific implementation, the feeding mechanism has two sets, namely, two sets of loading assemblies 200 and transfer assemblies 300 that cooperate with each other.

[0030] The solder paste dispensing mechanism 400 is set at the solder dispensing position. After the product carrying the placed resistor moves to the solder dispensing position and is positioned, the solder paste dispensing mechanism 400 moves above the joint between the resistor lead and the product pad and applies solder paste accurately and quantitatively.

[0031] refer to Figure 7 As shown, the heating mechanism 500, located at the heating position, mainly includes a hot air gun 510 and a nozzle 520. The hot air gun 510 is used to generate stable and controllable high-temperature hot air. It typically contains a heating element, a temperature sensor, and a fan, and the outlet air temperature and airflow can be precisely adjusted by a control system. The nozzle 520 is connected to the outlet end of the hot air gun 510. The shape and size of the nozzle 520 are specifically designed to fit the space between the protective components. In a preferred embodiment, the nozzle 520 can be made into a flat, narrow slit-shaped outlet, allowing it to be inserted into or closely aligned with the space between the components.

[0032] The product is conveyed to the loading position and positioned by the support rail 100. The transfer component 300 of the feeding mechanism removes the resistor from the feeding component and precisely places it in the predetermined position on the product. The drive mechanism drives the product with the placed resistor to the soldering position and positions it. The solder paste application mechanism 400 applies solder paste to the resistor leads. The product continues to be conveyed to the heating position and precisely positioned. The heating mechanism 500 is activated, and the hot air gun 510 generates high-temperature hot air. After flowing through the nozzle 520, the hot air is concentrated and blown out from the outlet of the nozzle 520. Due to the precise alignment of the gap between the nozzle 520 and the protective component, the hot air is strictly confined and blown directly and concentratedly onto the area of ​​the resistor leads on the product that needs to be soldered through this gap. Under precise local hot air heating, the solder paste in this area quickly melts, flows, and wets, completing the metallurgical bond between the resistor leads and the product pads, forming a strong solder joint. Meanwhile, the physical components of the protective assembly effectively isolate hot air from other areas of the product, especially protecting heat-sensitive parts such as the waterproof ring and plastic shell from the heat. After welding, the product is transported to a subsequent station for natural or forced air cooling. Inspection stations and components can also be set up to monitor the welding effect in real time. Finally, the product is removed, completing the entire welding process.

[0033] This invention employs a combination of a hot air gun 510 and a nozzle 520 to precisely confine heat to the resistor leads and pads to be soldered. This allows the hot airflow to act precisely on the solder joints, eliminating the need for applying significant positioning and clamping force to the entire product to ensure heating uniformity. Waterproof rings and other heat-sensitive components on the product are kept away from the solder joints, preventing prolonged exposure to high temperatures and thus avoiding aging, hardening, deformation, or performance failure of the waterproof rings due to heat, ensuring long-term sealing reliability. This invention abandons the traditional reflow oven that heats the entire board at high temperatures, innovatively adopting a localized, precise heating method to decouple the soldering pressure from the sealing structure, protecting the integrity of the waterproof rings. This integrated machine automates the processes of material loading, soldering, and heating, inheriting the efficiency advantages of SMT automated production. Furthermore, because the heating is localized and non-contact (hot air), the heat input to each solder joint can be precisely controlled by adjusting parameters such as hot air temperature, airflow speed, nozzle 520 distance, and application time. This better adapts to the requirements of different products and solder pastes, significantly improving soldering yield.

[0034] refer to Figure 7 As shown, in one embodiment, the protective component includes a first cover plate 530 and a second cover plate 540, with a gap formed between the first cover plate 530 and the second cover plate 540, and the second cover plate 540 and / or the second cover plate 540 is further provided with a heat dissipation mechanism.

[0035] In the specific implementation process, the first cover plate 530 and the second cover plate 540 are arranged opposite each other, maintaining a specific distance between them, thus forming an interval space. The width and height of this interval space are precisely designed according to the size of the nozzle 520 and the position of the welding point on the product, ensuring that the nozzle 520 can be aligned or partially inserted, while strictly limiting the hot air flow channel. The first cover plate 530 and the second cover plate 540 can be placed parallel or approximately parallel on both sides or above and below the carrying rail 100. When the product is transported to the heating position, the part that needs to be welded (the area where the resistor is installed) is located directly below or opposite this interval space, while the parts of the product that need to be protected (such as the edge with a waterproof ring or the internal structure) are blocked by the solid parts of the first cover plate 530 and / or the second cover plate 540. In this way, the main part of the hot air ejected from the nozzle 520 can only reach the welding point through the narrow interval space, while the heat scattered in all directions is effectively blocked by the first and second cover plates 540, forming a physical thermal barrier.

[0036] Furthermore, to prevent the first cover plate 530 and / or the second cover plate 540 from continuously increasing their own temperature during the long-term blocking of high-temperature hot air (which may cause heat to indirectly affect the product through heat conduction or heat radiation, or affect the lifespan and stability of the protective components themselves), this embodiment also provides a heat dissipation mechanism on the second cover plate 540 and / or the first cover plate 530. The heat dissipation mechanism can be implemented in various ways, such as processing dense heat dissipation fins on the side of the cover plate facing away from the space to increase the heat dissipation area and accelerate heat dissipation through natural air convection. Alternatively, a circulating liquid cooling pipe can be embedded inside the cover plate, or a forced air cooling device (such as a small cooling fan) can be installed on its outside to actively remove the accumulated heat.

[0037] In one embodiment, the heat dissipation mechanism is configured as a cooling channel 550, which is located inside the second cover plate 540 and contains coolant.

[0038] In practical implementation, the second cover plate 540 corresponds to the product sealing ring. The cooling channel 550 is a closed cavity formed by machining the base material of the second cover plate 540, and has a specific flow path. Its flow path design can be serpentine, parallel, or spiral, to allow the coolant to interact with the high-temperature area of ​​the second cover plate 540. It is understood that the cooling channel 550 has a coolant inlet and a coolant outlet, which are connected to an external coolant circulation system (not shown in the figure) via pipes. The external coolant circulation system typically includes a reservoir, a circulation pump, a radiator, and a control system. Driven by the circulation pump, the coolant flows from the reservoir, enters the cooling channel 550 inside the second cover plate 540 through the coolant inlet via pipes, flows through the entire designed flow path, and then flows out from the coolant outlet, carrying away the heat absorbed by the second cover plate 540. It then flows back to the external radiator for cooling and finally returns to the reservoir, forming a closed-loop active cooling cycle.

[0039] refer to Figure 3 As shown, in one embodiment, the driving mechanism includes a lateral movement assembly 110, which includes a lateral movement guide rail 111, a connecting block 112, and a vertical cylinder 113. The lateral movement guide rail 111 is disposed on the bearing rail 100, the connecting block 112 is slidably disposed on the lateral movement guide rail 111, and the vertical cylinder 113 is disposed on the lateral movement connecting block 112. The product has an insertion hole, and the vertical cylinder 113 is connected to a pin 114 and drives the pin 114 to move and insert into the insertion hole, thus providing lateral movement force.

[0040] The transverse guide rail 111 is fixedly mounted on the frame or base of the supporting rail 100, and its extension direction is parallel to the product conveying direction. The connecting block 112 is slidably disposed on the transverse guide rail 111 and can slide along the length direction of the transverse guide rail 111. The vertical cylinder 113 is fixedly mounted on the connecting block 112, so that the vertical cylinder 113 can move laterally along the transverse guide rail 111 synchronously with the connecting block 112. The pin 114 is connected to the piston rod of the vertical cylinder 113, and the driving direction of the vertical cylinder 113 is perpendicular to the conveying plane of the supporting rail 100. It can be understood that the connecting block 112 is driven by a transverse moving force source, which can be a servo motor-driven screw and nut pair, a linear motor, or a linkage mechanism driven by a cylinder, etc., that cooperates with the transverse guide rail 111, so as to realize the sliding of the connecting block 112 along the transverse guide rail 111.

[0041] In this embodiment, the product is pre-set with insertion holes, such as positioning process holes, and the shape and size of the insertion pin 114 are adapted to the insertion holes. When the lateral movement power source is activated, the connecting block 112 drives the vertical cylinder 113 to move along the lateral guide rail 111. At the same time, the vertical cylinder 113 drives the insertion pin 114 to insert into the insertion hole, thereby driving the product to move along the carrying track 100. Then, the vertical cylinder 113 drives the insertion pin 114 to be pulled out of the insertion hole, and the connecting block 112 drives the vertical cylinder 113 to move in the opposite direction along the lateral guide rail 111. The vertical cylinder 113 drives the insertion pin 114 to insert into the insertion hole for the next lateral movement, and the cycle repeats to realize the product conveying. It should be noted that the carrying track 100 is provided with a third cover plate 140, and the third cover plate 140 is provided with a clearance hole 141. The insertion pin 114 is also movably located within the clearance hole 141. In the specific implementation process, the clearance hole 141 is an elongated hole, and its extension direction is consistent with the product conveying direction, providing a moving channel for the pin 114.

[0042] In one embodiment, the drive mechanism further includes a lateral movement force assembly 120. Along the conveying direction of the carrying track 100, there are at least two sets of lateral movement assemblies 110. A synchronizing element 130 is connected between the two sets of lateral movement assemblies 110, and one set of lateral movement assemblies 110 is connected to the lateral movement force assembly 120.

[0043] To achieve more balanced and stable multi-point positioning of the product and ensure that long or large products do not deflect during positioning, this embodiment includes at least two sets of transverse assemblies 110 along the conveying direction of the carrying track 100. To ensure that the two (or more) sets of transverse assemblies 110 can move synchronously to coordinate the conveying of the product, a synchronizing element 130 is connected between the two sets of transverse assemblies 110. This synchronizing element 130 can be a rigidly connected synchronizing rod or synchronizing shaft, with its two ends fixedly connected to the connecting blocks 112 of the two sets of transverse assemblies 110 respectively. In this way, the movement of any connecting block 112 will be directly transmitted to the other connecting block 112 through the synchronizing rod, forcing both to maintain completely consistent displacement on the transverse guide rail 111.

[0044] The drive mechanism also includes a lateral movement force assembly 120 (e.g., a combination of a servo motor and a lead screw, or a linear motor module) that provides driving force. This lateral movement force assembly 120 is connected to the power input end of one of the lateral movement assemblies 110. When the lateral movement force assembly 120 drives the first lateral movement assembly 110 to move, its movement is synchronously transmitted to the second lateral movement assembly 110 through a synchronizing rod, thereby achieving precise synchronous movement of the two sets of assemblies driven by a single power source.

[0045] refer to Figure 6As shown, in one embodiment, the material transfer assembly 300 includes a material transfer motor 310, a swing arm 320, and a guide block 330. The material transfer motor 310 is connected to the swing arm 320, and the guide block 330 is provided with a guide groove 331. The swing arm 320 is connected to the material transfer arm 340 and drives the material transfer arm 340 to slide along the guide groove 331, so that the material transfer arm 340 has a suction position and a discharge position. The material transfer arm 340 absorbs the resistor at the suction position and attaches the resistor to the product at the discharge position.

[0046] The transfer motor 310 serves as the power source, preferably a servo motor or stepper motor capable of angle control. One end of the swing arm 320 is connected to the output shaft of the transfer motor 310, allowing the swing arm 320 to precisely rotate and swing within a plane under the drive of the transfer motor 310. The guide block 330 is fixedly mounted on the equipment frame, and a guide groove 331 of a specific shape is formed on the guide block 330. One end of the transfer arm 340 is hinged to the swing arm 320, and this connection point is also embedded in the guide groove 331 of the guide block 330. The other end of the transfer arm 340 is equipped with a pick-and-place device, such as a vacuum nozzle, for picking up and releasing resistors.

[0047] In practical implementation, the swing arm 320 has a connecting hole, which can be an elongated hole or a hole of a specific shape, to meet the movement stroke of the transfer arm 340. The transfer arm 340 is connected to a connecting rod, which is equipped with two rotating wheels or bearings. One rotating wheel is located in the guide groove 331 and slides along the guide groove 331, while the other rotating wheel is located in the connecting hole and slides along the connecting hole. In this way, the transfer motor 310 drives the swing arm 320 to rotate, and the swing arm 320, through the connecting rod and in cooperation with the rotating wheels, drives the transfer arm 340 to move along the guide groove 331 between the suction position and the discharge position.

[0048] In one embodiment, the material transfer assembly 300 further includes a horizontal support rail 350 and a vertical support rail 360. The horizontal support rail 350 is connected to a horizontal support block 351, the horizontal support block 351 is connected to a vertical support block 361, the vertical support block 361 is connected to the vertical support rail 360, and the vertical support rail 360 is connected to the material transfer arm 340.

[0049] To address the potential vibration or deflection issues that may occur during the swinging of the relatively long transfer arm 340, and to improve the ultimate accuracy of the pick-up and place-down positions, this embodiment incorporates a multi-stage support structure. The transverse support rail 350 is fixedly mounted on the equipment frame, extending approximately parallel to the chord direction of the arc projection of the swing arm 320 from the material suction position to the material release position. The transverse support block 351 is slidably fitted onto the transverse support rail 350, allowing free sliding along it. The vertical support block 361 is fixedly connected to the transverse support block 351. The vertical support rail 360 is fixedly connected to the vertical support block 361, extending perpendicularly to the plane of the bearing rail 100. The upper part of the transfer arm 340 is fixedly connected to the vertical support rail 360.

[0050] When the swing arm 320 drives the transfer arm 340 to swing, the connection point in the middle of the transfer arm 340 will cause the vertical support rail 360 and its vertical support block 361 and horizontal support block 351 to move as a whole. The horizontal support block 351 slides along the horizontal support rail 350 to accommodate the horizontal displacement component at the end of the transfer arm 340, and the transfer arm 340 slides relative to the vertical support rail 360 to accommodate the height change component during its swing. This enhances the overall rigidity of the transfer arm 340, effectively suppresses vibration and end deformation during movement, and improves the stability of movement.

[0051] The material transfer assembly 300 is provided with a first sensor 370 and a second sensor 380. The first sensor 370 is located at the material suction position, and the second sensor 380 is located at the second position. The swing arm 320 is provided with a trigger 390, which is adapted to trigger the first sensor 370 and the second sensor 380.

[0052] The first sensor 370 is fixedly mounted on the frame, corresponding to the material suction position. The second sensor 380 is fixedly mounted on the frame, corresponding to the material discharge position. The trigger 390 is fixedly mounted on the swing arm 320 (or a component that rotates synchronously with the swing arm 320) and rotates together with the swing arm 320. The first sensor 370 and the second sensor 380 can be proximity sensors, photoelectric sensors, or microswitches. The trigger 390 is a sensing plate, baffle, or protrusion that matches the sensor type. When the transfer motor 310 drives the swing arm 320 to rotate, causing the trigger 390 to move to the vicinity of the material suction position, the trigger 390 enters the sensing area of ​​the first sensor 370, and the sensor emits a signal. This signal is fed back to the control system, which can then execute or confirm a series of actions, such as: controlling the transfer motor 310 to decelerate and stop at a precise pre-programmed position; triggering the vacuum nozzle to perform a suction action; and, as a safety signal, allowing the next step of the process to begin. Similarly, when the swing arm 320 moves to the unloading position, the trigger 390 triggers the second sensor 380, the control system controls the motor to stop precisely and triggers the vacuum release action.

[0053] refer to Figure 5 As shown, the feeding assembly 200 further includes a feeding motor 210, a feeding roll 220, and a take-up roll 230. The feeding roll 220 is used to provide resistance material strip, which has a drive hole. The feeding motor 210 is connected to a drive disk 240 and a feeding drive wheel 250. The drive disk 240 has a drive column 241, which is inserted into the drive hole and drives the resistance material strip to move. The drive wheel 250 is connected to a drive belt, which is connected to the take-up roll 230 and drives the take-up roll 230 to rotate.

[0054] The feeding roll 220 is used to carry and release unused resistor strips, which carry multiple resistors at predetermined intervals and are sealed with a cover film. The take-up roll 230 is used to reel in the empty strip (i.e., the strip substrate and cover film) after the resistors have been absorbed. The feeding motor 210 serves as the core power source, preferably a stepper motor or a servo motor. The drive disk 240 is fixedly connected to the output shaft of the feeding motor 210 and rotates synchronously with the motor. At least one drive post 241 is provided on the peripheral wall or edge of the drive disk 240. The feeding drive wheel 250 is also fixedly connected to the output shaft of the feeding motor 210, coaxial with the drive disk 240, and rotates synchronously. A drive belt is sleeved on the shaft of the feeding drive wheel 250 and the take-up roll 230 for transmitting power. The drive belt can be a synchronous belt, a flat belt, or a steel wire belt.

[0055] One side (usually at the edge) of the resistance strip has equally spaced drive holes (also called positioning holes or ratchet holes). When the feeding motor 210 rotates, it drives the drive disk 240 to rotate, and the drive pins 241 on the drive disk 240 periodically insert into the drive holes of the resistance strip. As the drive disk 240 continues to rotate, the drive pins 241 push the wall of the drive hole, thereby precisely pulling the resistance strip forward by a fixed step distance (i.e., the distance between two adjacent resistors). While the feeding motor 210 drives the new strip forward through the drive disk 240, the feeding drive wheel 250, which is coaxial with the motor, also rotates synchronously. The feeding drive wheel 250 transmits power to the shaft of the take-up roll 230 through the drive belt, driving the take-up roll 230 to rotate, thereby neatly winding up the empty strip from which the resistors have been removed.

[0056] refer to Figure 8 As shown, in one embodiment, the solder paste dispensing mechanism 400 includes a support frame 410, a solder paste dispensing drive 420, and a mounting frame 430. The mounting frame 430 is equipped with a solder paste gun. The solder paste dispensing drive 420 is connected to the mounting frame 430 and drives the mounting frame 430 to move. The solder paste dispensing drive 420 is located on the support frame 410.

[0057] The support frame 410 serves as the mounting base for the entire solder paste dispensing mechanism 400. It is fixedly mounted on the equipment frame, spanning or located above the solder paste dispensing position on the support rail 100. The mounting frame 430 directly supports the dispensing execution unit. A solder paste gun is fixedly mounted on the mounting frame 430. The solder paste gun typically includes a reservoir, a precision dispensing valve, a dispensing needle, and necessary tubing and controllers for precisely controlling the amount of solder paste dispensed. The solder paste dispensing drive 420, mounted on the support frame 410, serves as the power source for driving the movement of the mounting frame 430 (along with the solder paste gun on it).

[0058] In one embodiment, the resistance welding integrated machine further includes a product conveying assembly, which includes a product loading tray 600 and a product receiving tray 610, respectively located at both ends of the carrying track 100.

[0059] The product loading tray 600 is located at the beginning of the support track 100. This tray is used to stack or support multiple unwelded resistors. It can be a simple tray rack or a hopper with an automatic lifting mechanism, used to transport products individually or in batches to the entrance of the support track 100. The product receiving tray 610 is located at the end of the support track 100. This tray receives and stores resistor-welded products. Its structure can be similar to the product loading tray 600, used for the orderly collection of finished products.

[0060] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the inventive concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A resistance welding integrated machine, characterized in that, The resistance welding machine is used for resistance welding to products and includes: A carrying track is connected to a drive mechanism, which drives the product to move along the carrying track. The carrying track is sequentially provided with a loading position, a soldering position and a heating position along the product conveying direction. The feeding mechanism includes a feeding assembly and a transferring assembly. The feeding assembly is used to provide the resistor, and the transferring assembly is located at the feeding position and is used to transfer the resistor from the feeding assembly to the product. A solder paste application mechanism, located at the solder application position, is used to apply solder paste to the product; and A heating mechanism is provided at the heating position. The heating mechanism includes a hot air gun and a nozzle. The nozzle is located at one end of the hot air gun. The hot air gun is used to generate hot air. The bearing rail is provided with a protective component. The protective component has a gap space. The nozzle is adapted to the gap space and blows hot air toward the product through the gap space to weld the resistance to the product.

2. The resistance welding integrated machine as described in claim 1, characterized in that, The protective component includes a first cover plate and a second cover plate, the space between the first cover plate and the second cover plate is formed, and the second cover plate and / or the second cover plate is also provided with a heat dissipation mechanism.

3. The resistance welding integrated machine as described in claim 2, characterized in that, The heat dissipation mechanism is configured as a cooling channel, which is located inside the second cover plate, and coolant flows through the cooling channel.

4. The resistance welding integrated machine as described in claim 1, characterized in that, The driving mechanism includes a lateral movement component, which includes a lateral movement guide rail, a connecting block, and a vertical cylinder. The lateral movement guide rail is disposed on the bearing rail, the connecting block is slidably disposed on the lateral movement guide rail, and the vertical cylinder is disposed on the lateral movement connecting block. The product has an insertion hole, and the vertical cylinder is connected to an insertion pin and drives the insertion pin to move and insert into the insertion hole. The lateral movement force is...

5. The resistance welding integrated machine as described in claim 4, characterized in that, The drive mechanism further includes a lateral movement force assembly. Along the conveying direction of the carrying track, at least two sets of the lateral movement assembly are provided. A synchronizing element connects the two sets of the lateral movement assembly, and one set of the lateral movement assembly is connected to the lateral movement force assembly; and / or, The bearing track is provided with a third cover plate, the third cover plate is provided with a clearance hole, and the pin is also movable within the clearance hole.

6. The resistance welding integrated machine as described in claim 1, characterized in that, The material transfer assembly includes a material transfer motor, a swing arm, and a guide block. The material transfer motor is connected to the swing arm, and the guide block is provided with a guide groove. The swing arm is connected to a material transfer arm and drives the material transfer arm to slide along the guide groove, so that the material transfer arm has a suction position and a discharge position. The material transfer arm picks up the resistor at the suction position and attaches the resistor to the product at the discharge position.

7. The resistance welding integrated machine as described in claim 6, characterized in that, The material transfer assembly further includes a horizontal support rail and a vertical support rail. The horizontal support rail is connected to a horizontal support block, the horizontal support block is connected to a vertical support block, the vertical support block is connected to the vertical support rail, and the vertical support rail is connected to the material transfer arm; and / or, The material transfer assembly is provided with a first sensor and a second sensor. The first sensor is located at the material suction position, and the second sensor is located at the second position. The swing arm is provided with a trigger, which is adapted to trigger the first sensor and the second sensor.

8. The resistance welding integrated machine as described in claim 6, characterized in that, The feeding assembly includes a feeding motor, a feeding roll, and a take-up roll. The feeding roll is used to provide resistance material strip. The resistance material strip has a drive hole. The feeding motor is connected to a drive disk and a feeding drive wheel. The drive disk has a drive column. The drive column is inserted into the drive hole and drives the resistance material strip to move. The drive wheel is connected to a drive belt. The drive belt is connected to the take-up roll and drives the take-up roll to rotate.

9. The resistance welding integrated machine as described in claim 1, characterized in that, The solder paste application mechanism includes a support frame, a solder paste application driver, and a mounting frame. The mounting frame is equipped with a solder paste gun. The solder paste application driver is connected to the mounting frame and drives the mounting frame to move. The solder paste application driver is located on the support frame.

10. The resistance welding integrated machine as described in claim 1, characterized in that, The resistance welding integrated machine also includes a product conveying component, which includes a product loading tray and a product receiving tray, respectively located at both ends of the carrying track.

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