An automatic welding device for manufacturing electronic instruments

Abstract

The present invention discloses an automatic welding device for manufacturing electronic instruments, belonging to the technical field of automatic welding. It includes a welding table for placing a handheld metal detector and an intermittent conveyor belt for conveying copper coils. A terminal limiting arc plate is fixedly connected to the top of the welding table, and side limiting components for limiting and positioning both sides of the handheld metal detector are arranged on both the left and right sides of the terminal limiting arc plate. Through the setting of the steering component and the elliptical grasping frame, the induction copper coil to be welded can be synchronously moved directly above the handheld metal detector, quickly completing the position limitation of the two components before welding, effectively improving the overall efficiency of the welding process. At the same time, through the setting of the wire holding component and the twisting tooth ring, the copper wire can be straightened and limited by two semi-trapezoidal columns and two electromagnetic pressing plates, and then driven to rotate by the twisting tooth ring to apply a certain twist to the end of the copper wire, avoiding the bending and deviation of the thinner copper wire during welding.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic welding, and particularly to an automatic welding device for manufacturing electronic instruments. Background Art

[0002] A handheld metal detector is a type of metal detector, named because of its hand-held use method. It is mainly used for venue security checks and preventing cheating in examination rooms. Compared with security gates, handheld metal detectors are more accurate. It alarms through the electromagnetic induction of metal objects, and the alarm methods mainly include sound and light, and vibration.

[0003] The handheld metal detector contains an induction copper coil. During production and manufacturing, it is necessary for welders to weld the two copper wires on the induction copper coil to the circuit board respectively. However, during welding, usually the welder needs to straighten the wiring ends of the coil first and then place them on the welding points of the circuit board for welding, resulting in low welding efficiency. And because the coils used in handheld metal detectors are generally thin copper wires, it is easy to have tiny jitter polarization when welding with a handheld soldering iron. When the welding end of the soldering iron touches the thin copper wire of the wiring end of the coil during jitter, it is easy to cause the bending and offset of the thin copper wire, and even fuse the copper wire, resulting in low welding quality. Therefore, an automatic welding device for manufacturing electronic instruments is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the welder first straightens the wiring ends of the coil and then places them on the welding points of the circuit board for welding, resulting in low welding efficiency, and because the coils used in handheld metal detectors are generally thin copper wires, it is easy to have tiny jitter polarization when welding with a handheld soldering iron, and it is easy to cause the bending and offset of the copper wire when touching the wiring end of the coil, and even fuse the copper wire, resulting in low welding quality, and to propose an automatic welding device for manufacturing electronic instruments.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An automatic welding device for manufacturing electronic instruments, including a welding table for placing a handheld metal detector and an intermittent conveyor belt for conveying copper coils. A terminal limiting arc plate is fixedly connected to the top of the welding table. Side limiting components for limiting and positioning both sides of the handheld metal detector are arranged on both the left and right sides of the terminal limiting arc plate. An electric control guide rail is arranged above the intermittent conveyor belt. The electric control guide rail is connected with an elliptical grabbing frame through a steering component, which is convenient for grabbing and placing copper coils. A plurality of grabbing grooves are formed on the inner side wall of the elliptical grabbing frame, and a mechanical grab is connected to the inner side wall of the grabbing groove through a control seat;

[0007] On the inner side wall of the side of the elliptical grasping frame away from the electric control guide rail, a cavity is provided. On the outside of the cavity, a wire separating assembly is provided for separating the two welding copper wires of the copper coil. Below the wire separating assembly, two opposite wire suction hoppers are provided. The thin end of the wire suction hopper is connected to a wire straightening tube. On the inner side wall of the wire straightening tube, two opposite guiding chutes are provided. On the inner side wall of the guiding chute, a wire holding assembly is connected. Between the two wire straightening tubes, a twisting double-sided rack is provided. On both sides of the twisting double-sided rack, twisting gear rings are provided for increasing the twist of the welding copper wires.

[0008] Preferably, the side limiting assembly is composed of a right-angle pressing plate and an arc-shaped pressing plate. The end of the right-angle pressing plate is connected to the side wall of the arc-shaped pressing plate through a universal telescopic joint. The top end of the welding table is fixedly connected to the side wall of the right-angle pressing plate through a hydraulic push rod. On the top end of the welding table, two symmetrically arranged inclined chutes are provided. The bottom end of the arc-shaped pressing plate is slidably connected to the inner side wall of the inclined chute through a sliding bead.

[0009] Preferably, the steering assembly is composed of a steering gear and a retaining rack. The top end of the welding table is fixedly connected to the end of the electric control guide rail through a fixing plate. The bottom end of the welding table is fixedly connected with a plurality of supports. The inner side wall of the electric control guide rail is slidably connected with a sliding seat. The bottom end of the sliding seat is rotationally connected to the top end of the steering gear through a rotating shaft.

[0010] Preferably, the steering gear and the retaining rack are meshed with each other. The side wall of the retaining rack is fixedly connected to the outer side wall of the electric control guide rail through a fixing rod. The bottom end of the steering gear is fixedly connected to the outer side wall of the elliptical grasping frame close to the electric control guide rail through an adapter plate.

[0011] Preferably, the inner side wall of the grasping groove of the elliptical grasping frame is connected to the mechanical gripper through a control seat. A micro air pump is arranged in the cavity of the elliptical grasping frame. On one side of the cavity of the elliptical grasping frame, an inverted U-shaped fixing plate is provided. The bottom end of the inverted U-shaped fixing plate is connected to an electric soldering iron through an automatic robotic arm.

[0012] Preferably, the wire separating assembly includes a clamp-shaped frame arranged inside the elliptical grasping frame. The inner side wall of the cavity of the elliptical grasping frame is fixedly connected with a barrier cover. The outer side wall of the barrier cover is connected with two electromagnetic beads respectively through two symmetric right-angle guide rods. Permanent magnetic beads are fixedly connected to both ends of the clamp-shaped frame. A torsion spring is arranged on the pin shaft for rotation inside the clamp-shaped frame.

[0013] Preferably, a suspension plate is fixedly connected to the outer side wall of the elliptical grasping frame on one side of the cavity. The suspension plate is communicated with the micro air pump in the cavity. The bottom end of the suspension plate is fixedly connected with a bifurcated limiting seat through an adjusting robotic arm. The bifurcated limiting seat is rotationally connected to the outer side walls of the two wire straightening tubes respectively through two sleeves.

[0014] Preferably, the wire holding assembly is composed of two semi-trapezoidal columns and two electromagnetic pressing plates. The outer side wall of the semi-trapezoidal column is slidably connected to the inner side wall of the guiding chute on the inner side wall of the wire straightening tube through a sliding guide rod. A threading semi-hole is provided at the axis of the semi-trapezoidal column, and the end of the semi-trapezoidal column is slidably connected to the electromagnetic pressing plate through two limit sliding columns.

[0015] Preferably, the outer side wall of the wire straightening tube is fixedly connected to the inner side wall of the twisting tooth ring. The bottom end of the bifurcated limit seat is fixedly connected with an adjusting push rod through a mounting plate. The output end of the adjusting push rod is fixedly connected to the bottom end of the double-sided twisting rack. Both sides of the double-sided twisting rack are respectively engaged with the two twisting tooth rings.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the setting of the end limit arc plate and the side limit assembly in this solution, the positioning and limiting of the handheld metal detector can be quickly completed by using the sequential movement states of the right-angle pressing plate and the arc surface pressing plate, enabling stable welding of the solder joints directly during automatic welding, which is convenient for subsequent welding between the induction copper coil and the circuit board.

[0018] 2. Through the setting of the steering assembly and the elliptical grasping frame in this solution, the induction copper coil to be welded can be synchronously moved to directly above the handheld metal detector, quickly completing the position limitation of the two components before welding, shortening the limiting time before welding, and effectively improving the overall efficiency of the welding process.

[0019] 3. Through the setting of the wire holding assembly and the twisting tooth ring in this solution, the copper wire can be straightened and limited by the two semi-trapezoidal columns and the two electromagnetic pressing plates, and then the copper wire is driven to rotate by the twisting tooth ring, applying a certain twist to the end of the copper wire, avoiding bending and deviation of the thinner copper wire during welding, and ensuring the subsequent welding quality. Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0021] Figure 2 It is an assembly drawing of an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0022] Figure 3 It is Figure 2 the enlarged view of part A in

[0023] Figure 4 It is Figure 2 the enlarged view of part B in

[0024] Figure 5 It is a structural schematic diagram of the side limit assembly in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0025] Figure 6 Schematic diagram of the structure of the position of the retaining rack in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0026] Figure 7 is Figure 6 The enlarged view at C in;

[0027] Figure 8 Schematic diagram of the structure of the steering component in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0028] Figure 9 Schematic diagram of the structure of the position of the clamp frame and two electromagnetic beads in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0029] Figure 10 Schematic diagram of the structure of the initial position of the wire holding component in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0030] Figure 11 Schematic diagram of the structure of the position of the wire holding component after straightening the copper wire in an automatic welding device for manufacturing electronic instruments proposed by the present invention;

[0031] Figure 12 is Figure 11 The enlarged view at D in.

[0032] In the figure: 1, welding table; 2, intermittent conveyor belt; 3, hand-held metal detector; 4, end limit arc plate; 5, hydraulic push rod; 6, right-angled pressing plate; 7, universal telescopic joint; 8, arc-shaped pressing plate; 9, electric control guide rail; 10, sliding seat; 11, steering gear; 12, retaining rack; 13, adapter plate; 14, elliptical grabbing frame; 15, control seat; 16, mechanical gripper; 17, barrier cover; 18, electromagnetic bead; 19, clamp frame; 20, permanent magnetic bead; 21, hanging plate; 22, adjustment robotic arm; 23, bifurcated limit seat; 24, sleeve; 25, wire straightening tube; 26, wire suction hopper; 27, adjustment push rod; 28, twisting double-sided rack; 29, twisting tooth ring; 30, sliding guide rod; 31, semi-trapezoidal column; 32, limit sliding column; 33, electromagnetic pressing plate; 34, electric soldering iron. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Example, referring to Figures 1 to 12 , an automatic welding device for manufacturing electronic instruments, including a welding table 1 for placing a handheld metal detector 3 and an intermittent conveyor belt 2 for conveying copper coils. A terminal limiting arc plate 4 is fixedly connected to the top end of the welding table 1. Side limiting components for limiting and positioning both sides of the handheld metal detector 3 are arranged on both the left and right sides of the terminal limiting arc plate 4. When the copper coils on the intermittent conveyor belt 2 are placed, the copper wire ends for welding are placed in the direction towards the welding table 1, and the connection ends of the two copper wires are separated;

[0037] Furthermore, the side limiting component is composed of a right-angle pressing plate 6 and an arc-shaped pressing plate 8. The end of the right-angle pressing plate 6 is connected to the side wall of the arc-shaped pressing plate 8 through a universal telescopic joint 7. The top end of the welding table 1 is fixedly connected to the side wall of the right-angle pressing plate 6 through a hydraulic push rod 5. Two symmetrically arranged inclined sliding grooves are opened on the top end of the welding table 1. The bottom end of the arc-shaped pressing plate 8 is slidably connected to the inner side wall of the inclined sliding groove through a sliding bead. The arc-shaped pressing plate 8 is closer to the handheld metal detector 3 than the right-angle pressing plate 6;

[0038] It should be noted that: The handheld metal detector 3 in the unsealed state is placed horizontally on the welding table 1, and the detection end of the handheld metal detector 3 is made to lean against the arc surface of the end limit arc plate 4. Subsequently, the hydraulic push rods 5 on both sides are activated to push the right-angle pressing plate 6. The movement of the right-angle pressing plate 6 will drive the arc surface pressing plate 8 to slide in a limited manner in the inclined chute through the universal telescopic joint 7. The universal telescopic joint 7 is used for distance compensation and angle compensation of the oblique movement of the arc surface pressing plate 8. During the movement, the arc surface pressing plate 8 will first contact the inner arc surface connecting the handle end and the detection end of the handheld metal detector 3, completing the position positioning of the handheld metal detector 3 by the end limit arc plate 4 and the two arc surface pressing plates 8. Subsequently, the pressing and clamping of the two right-angle pressing plates 6 are completed to firmly limit the handheld metal detector 3;

[0039] Based on the above advantages: This can utilize the sequential movement states of the right-angle pressing plate 6 and the arc surface pressing plate 8 to quickly complete the positioning and limiting of the handheld metal detector 3, enabling stable welding of the solder joints directly during automatic welding, facilitating the subsequent welding between the induction copper coil and the circuit board;

[0040] An electric control guide rail 9 is provided above the intermittent conveyor belt 2. The electric control guide rail 9 is connected to an elliptical grasping frame 14 through a steering assembly, facilitating the grasping and placement of the copper coil. A plurality of grasping grooves are provided on the inner side wall of the elliptical grasping frame 14. The inner side wall of the grasping groove is connected to a mechanical gripper 16 through a control seat 15;

[0041] Furthermore, the steering assembly consists of a steering gear 11 and a retaining rack 12. The top end of the welding table 1 is fixedly connected to the end of the electric control guide rail 9 through a fixing plate. A plurality of supports are fixedly connected to the bottom end of the welding table 1. A sliding seat 10 is slidably connected to the inner side wall of the electric control guide rail 9. The bottom end of the sliding seat 10 is rotatably connected to the top end of the steering gear 11 through a rotating shaft. The steering gear 11 and the retaining rack 12 are meshed with each other. The side wall of the retaining rack 12 is fixedly connected to the outer side wall of the electric control guide rail 9 through a fixing rod. The bottom end of the steering gear 11 is fixedly connected to the outer side wall of the elliptical grasping frame 14 close to the electric control guide rail 9 through an adapter plate 13. The inner side wall of the grasping groove of the elliptical grasping frame 14 is connected to the mechanical gripper 16 through a control seat 15. A micro air pump is provided in the cavity of the elliptical grasping frame 14. An inverted U-shaped fixing plate is provided on one side of the cavity of the elliptical grasping frame 14. The bottom end of the inverted U-shaped fixing plate is connected to a soldering iron 34 through an automated robotic arm. The automated robotic arm is a prior art and can control the automatic welding of the soldering iron 34;

[0042] It should be noted that during the fixation of the handheld metal detector 3, the electric control guide rail 9 is synchronously started, and the sliding seat 10 is moved outward along the direction of the retaining rack 12. The movement of the sliding seat 10 will synchronously drive the steering gear 11 and the elliptical grabbing frame 14 to move together. While the steering gear 11 advances on the engaged retaining rack 12, it will rotate itself, thereby driving the elliptical grabbing frame 14 to rotate outward until it is directly above the intermittent conveyor belt 2. At this time, the intermittent conveyor belt 2 is controlled to just stop, and the limited induction copper coil to be assembled is conveyed to directly below the elliptical grabbing frame 14. Subsequently, multiple mechanical grippers 16 inside the elliptical grabbing frame 14 are activated to grab and clamp and limit multiple positions of the induction copper coil. Then, the sliding seat 10 is slid back to its original position on the electric control guide rail 9, so that the elliptical grabbing frame 14 drives the grabbed induction copper coil to move back to directly above the handheld metal detector 3;

[0043] The benefits based on the above are as follows: This can synchronously move the induction copper coil to be welded to directly above the handheld metal detector 3, quickly complete the position limitation of the two components before welding, shorten the limiting time before welding, and effectively improve the overall efficiency of the welding process;

[0044] A cavity is provided on the inner side wall of the side of the elliptical grabbing frame 14 away from the electric control guide rail 9. A wire separating assembly for separating the two welding copper wires of the copper coil is provided outside the cavity. Two opposite wire suction hoppers 26 are provided below the wire separating assembly. The thin end of the wire suction hopper 26 is connected to a wire straightening tube 25. Two opposite guiding chutes are provided on the inner side wall of the wire straightening tube 25. A wire holding assembly is connected to the inner side wall of the guiding chute. A twisting double-sided rack 28 is provided between the two wire straightening tubes 25. Twisting tooth rings 29 for increasing the twist of the welding copper wires are provided on both sides of the twisting double-sided rack 28;

[0045] Furthermore, the septum component includes a clamp-shaped frame 19 disposed inside the elliptical grasping frame 14. A barrier cover 17 is fixedly connected to the inner side wall of the cavity of the elliptical grasping frame 14. Two electromagnetic beads 18 are respectively connected to the outer side wall of the barrier cover 17 through two symmetrical right-angle guide rods. Permanent magnetic beads 20 are fixedly connected to both ends of the clamp-shaped frame 19. A torsion spring is disposed on the pin shaft for rotation inside the clamp-shaped frame 19. A suspension plate 21 is fixedly connected to the outer side wall of the elliptical grasping frame 14 on one side of the cavity. The suspension plate 21 is in mutual communication with the micro air pump inside the cavity. The bottom end of the suspension plate 21 is fixedly connected to a bifurcated limit seat 23 through an adjustment robotic arm 22. The bifurcated limit seat 23 is rotatably connected to the outer side walls of two wire-straightening tubes 25 through two sleeves 24 respectively. The wire-holding component is composed of two semi-trapezoidal columns 31 and two electromagnetic pressing plates 33. The outer side wall of the semi-trapezoidal column 31 is slidably connected to the inner side wall of the guiding chute on the inner side wall of the wire-straightening tube 25 through a sliding guide rod 30. A wire-passing semi-hole is opened at the axis of the semi-trapezoidal column 31. The end of the semi-trapezoidal column 31 is slidably connected to the electromagnetic pressing plate 33 through two limit sliding columns 32. The outer side wall of the wire-straightening tube 25 is fixedly connected to the inner side wall of a twisting tooth ring 29. The bottom end of the bifurcated limit seat 23 is fixedly connected to an adjustment push rod 27 through a mounting plate. The output end of the adjustment push rod 27 is fixedly connected to the bottom end of a twisting double-sided rack 28. The two sides of the twisting double-sided rack 28 are respectively engaged with the two twisting tooth rings 29;

[0046] It should be noted that: Subsequently, the micro air pump in the cavity of the elliptical grasping frame 14 is started, so that an inhalation airflow is generated at the barrier cover 17, and the two copper wires on the induction copper coil move to the barrier cover 17 along with the airflow. Then, the two electromagnetic beads 18 are energized, and the two permanent magnetic beads 20 on the clamp-shaped frame 19 are magnetically attracted to each other, so that the clamp-shaped frame 19 is unfolded and the electromagnetic beads 18 and the permanent magnetic beads 20 are magnetically attracted together. Among them, the connection ends of the copper wires will be in a horizontally separated state under the action of the airflow only. Thus, the connection ends of the two copper wires that move horizontally along with the airflow are separated on the left and right sides within the annular structure formed by the right-angle guide rods and the unfolded clamp-shaped frame 19, and the connection ends of the two copper wires are limited;

[0047] Subsequently, the wire suction hopper 26 is moved towards the annular structure formed by the right-angle guide rod and the unfolded clamp frame 19 by adjusting the robotic arm 22. After the movement is completed, the air suction at the barrier cover 17 is stopped, and the micro air pump makes the wire suction hopper 26 generate a suction airflow through the hanging plate 21 and the hose, sucking the copper wire staying in the annular structure formed by the right-angle guide rod and the unfolded clamp frame 19 into the wire straightening tube 25. Subsequently, the power supply to the electromagnetic beads 18 is disconnected, and the annular structure is opened, enabling the continuous suction of the copper wire. The guiding chute is of an electrically controlled guiding chute structure, which can control the side wall of the sliding guide rod 30 to slide on the inner side wall of the guiding chute. After the copper wire is sucked in, the sliding guide rod 30 is used to control the half trapezoidal column 31 to slide in the guiding chute, so that the two half trapezoidal columns 31 fit together. The soft rubber material inside the half trapezoidal column 31 will limit the copper wire, and the copper wire will be straightened in the wire straightening tube 25 during the movement. The lengths of the copper wires used for welding on the batch-produced copper coils are controlled to be consistent. After the half trapezoidal column 31 moves to the end of the wire straightening tube 25, the ends of the copper wires used for welding will be exposed outside. At this time, the two electromagnetic pressing plates 33 are powered on, so that the electromagnetic pressing plates 33 tightly limit the ends of the straightened copper wires. Subsequently, the adjusting push rod 27 is started. The adjusting push rod 27 is a push rod structure driven by hydraulic pressure. When the adjusting push rod 27 pushes the twisting double-sided rack 28, the engaged twisting gear rings 29 on both sides will rotate. The rotation of the twisting gear rings 29 will drive the wire straightening tube 25 to rotate in the sleeve 24. The rotation of the wire straightening tube 25 will drive the two half trapezoidal columns 31 and the two electromagnetic pressing plates 33, slightly twisting the copper wire, so that the ends of the copper wire have a certain twist, thereby enhancing the strength of the ends of the copper wire and making it not easy to bend. Before welding, the adjacent ends of the two electromagnetic pressing plates 33 are controlled to have the same magnetic pole, and they repel and separate from each other to expose the ends of the copper wire. Subsequently, the robotic arm 22 is adjusted to guide the twisted copper wire to the welding contact points on the circuit board in the handheld metal detector 3, and precise welding is performed with an electric soldering iron 34;

[0048] The benefits based on the above are as follows: In this way, the two half trapezoidal columns 31 and the two electromagnetic pressing plates 33 can straighten and limit the copper wire, and then drive the rotation through the twisting gear ring 29 to apply a certain twist to the ends of the copper wire, avoiding the bending and deviation of the thinner copper wire during welding and ensuring the subsequent welding quality;

[0049] When the present invention is in use, the handheld metal detector 3 in the unsealed state is horizontally placed on the welding table 1, and the detection end of the handheld metal detector 3 is made to abut against the arc surface of the end limit arc plate 4. Subsequently, the hydraulic push rods 5 on both sides are started to push the right-angle pressing plate 6. The movement of the right-angle pressing plate 6 will drive the arc surface pressing plate 8 to slide in a limited manner in the inclined chute through the universal telescopic joint 7. The universal telescopic joint 7 is used for distance compensation and angle compensation of the oblique movement of the arc surface pressing plate 8. During the movement process, the arc surface pressing plate 8 will first contact the inner arc surface where the handle end and the detection end of the handheld metal detector 3 are connected, completing the position positioning of the handheld metal detector 3 by the end limit arc plate 4 and the two arc surface pressing plates 8. Subsequently, the pressing and clamping of the two right-angle pressing plates 6 are completed to firmly limit the handheld metal detector 3. In this way, the position positioning and limiting of the handheld metal detector 3 can be quickly completed by using the sequential movement states of the right-angle pressing plate 6 and the arc surface pressing plate 8, enabling stable welding of the solder joints directly during automatic welding and facilitating subsequent welding between the induction copper coil and the circuit board;

[0050] During the process of fixing the handheld metal detector 3, the electric control guide rail 9 is synchronously started, and the sliding seat 10 moves outward along the direction of the retaining rack 12. The movement of the sliding seat 10 will synchronously drive the steering gear 11 and the elliptical grasping frame 14 to move together. While the steering gear 11 advances on the engaged retaining rack 12, it will rotate itself, thereby driving the elliptical grasping frame 14 to rotate outward to the position directly above the intermittent conveyor belt 2. At this time, the intermittent conveyor belt 2 is controlled to just stop, and the limited induction copper coil to be assembled is conveyed to the position directly below the elliptical grasping frame 14. Subsequently, a plurality of mechanical grippers 16 in the elliptical grasping frame 14 are started to grasp and limit a plurality of positions of the induction copper coil. Then, the sliding seat 10 is slid back on the electric control guide rail 9, so that the elliptical grasping frame 14 drives the grasped induction copper coil to move back to the position directly above the handheld metal detector 3. In this way, the induction copper coil to be welded can be synchronously moved to the position directly above the handheld metal detector 3, quickly completing the position limitation of the two components before welding, shortening the limiting time before welding, and effectively improving the overall efficiency of the welding process;

[0051] Subsequently, the micro air pump in the inner cavity of the elliptical grasping frame 14 is started, so that an inhalation airflow is generated at the barrier cover 17, and the two copper wires on the induction copper coil move to the barrier cover 17 along with the airflow. Then, the two electromagnetic beads 18 are electrified, and the two permanent magnetic beads 20 on the clamping frame 19 are magnetically attracted to each other, so that the clamping frame 19 expands and the electromagnetic beads 18 and the permanent magnetic beads 20 are magnetically attracted together. Among them, the wiring ends of the copper wires will be in a horizontally separated state only under the action of the airflow, so that the two horizontally moving copper wire wiring ends along with the airflow are separated on the left and right sides within the annular structure composed of the right-angle guide rods and the expanded clamping frame 19, limiting the wiring ends of the two copper wires;

[0052] Subsequently, the wire suction hopper 26 is moved towards the annular structure formed by the right-angle guide rod and the unfolded clamping frame 19 by adjusting the robotic arm 22. After the movement is completed, the air intake at the barrier cover 17 is stopped, and the micro air pump enables the wire suction hopper 26 to generate an intake airflow through the hanging plate 21 and the hose, sucking the copper wire staying in the annular structure formed by the right-angle guide rod and the unfolded clamping frame 19 into the wire straightening tube 25. Subsequently, the power supply to the electromagnetic beads 18 is disconnected, causing the annular structure to open, allowing the copper wire to be continuously sucked in. The guiding chute is of an electronically controlled chute structure, which can control the side wall of the sliding guide rod 30 to slide on the inner side wall of the guiding chute. After the copper wire is sucked in, the sliding guide rod 30 is used to control the half-trapezoidal columns 31 to slide in the guiding chute, so that the two half-trapezoidal columns 31 are mutually attached. The soft rubber material in the half-trapezoidal columns 31 will limit the copper wire. During the movement, the copper wire will be straightened in the wire straightening tube 25. The lengths of the copper wires used for welding on the batch-produced copper coils are controlled to be consistent. After the half-trapezoidal columns 31 move to the end of the wire straightening tube 25, the ends of the copper wires used for welding will be exposed. At this time, the two electromagnetic pressing plates 33 are powered on, so that the electromagnetic pressing plates 33 tightly limit the ends of the straightened copper wires.

[0053] Subsequently, the adjusting push rod 27 is started again. The adjusting push rod 27 is a push rod structure driven by hydraulic pressure. When the adjusting push rod 27 pushes the twisting double-sided rack 28, the engaged twisting gear rings 29 on both sides will rotate. The rotation of the twisting gear rings 29 will drive the wire straightening tube 25 to rotate in the sleeve 24. The rotation of the wire straightening tube 25 will drive the two half-trapezoidal columns 31 and the two electromagnetic pressing plates 33, slightly twisting the copper wire, so that the ends of the copper wire have a certain twist, thereby enhancing the strength of the ends of the copper wire and making it not easy to bend. Before welding, the adjacent ends of the two electromagnetic pressing plates 33 are controlled to have the same magnetic poles, and they repel and separate from each other to expose the ends of the copper wire. Subsequently, the twisted copper wire is led to the welding contact points on the circuit board in the handheld metal detector 3 by adjusting the robotic arm 22 and precisely welded by the soldering iron 34. In this way, the two half-trapezoidal columns 31 and the two electromagnetic pressing plates 33 can straighten and limit the copper wire, and then drive the rotation through the twisting gear rings 29 to apply a certain twist to the ends of the copper wire, avoiding the bending and deviation of the thinner copper wire during welding and ensuring the subsequent welding quality.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An automatic welding device for manufacturing electronic instruments, comprising a welding table (1) for placing a handheld metal detector (3) and an intermittent conveyor belt (2) for conveying copper coils, characterized in that, At the top of the welding table (1), there is a fixed connection with an end limiting arc plate (4). On both the left and right sides of the end limiting arc plate (4), there are side limiting components for limiting and positioning both sides of the handheld metal detector (3). Above the intermittent conveyor belt (2), there is an electric control guide rail (9). The electric control guide rail (9) is connected to an elliptical grasping frame (14) through a steering component, which is convenient for grasping and placing copper coils. On the inner side wall of the elliptical grasping frame (14), there are a plurality of grasping grooves. The inner side wall of the grasping groove is connected to a mechanical gripper (16) through a control seat (15); On the inner side wall of one side of the elliptical grasping frame (14) away from the electric control guide rail (9), there is a cavity. On the outer side of the cavity, there is a wire separating component for separating the two welding copper wires of the copper coil. Below the wire separating component, there are two opposite wire suction hoppers (26). The thin end of the wire suction hopper (26) is connected to a wire straightening tube (25). On the inner side wall of the wire straightening tube (25), there are two opposite guiding sliding grooves. The inner side wall of the guiding sliding groove is connected to a wire holding component. Between the two wire straightening tubes (25), there is a twisting double-sided rack (28). On both sides of the twisting double-sided rack (28), there are twisting gear rings (29) for increasing the twist of the welding copper wire; The side limiting component is composed of a right-angle pressing plate (6) and an arc-shaped pressing plate (8). The end of the right-angle pressing plate (6) is connected to the side wall of the arc-shaped pressing plate (8) through a universal telescopic joint (7). The top of the welding table (1) is fixedly connected to the side wall of the right-angle pressing plate (6) through a hydraulic push rod (5). On the top of the welding table (1), there are two symmetrically arranged inclined sliding grooves. The bottom end of the arc-shaped pressing plate (8) is slidably connected to the inner side wall of the inclined sliding groove through a sliding bead. The wire separating component includes a clamp-shaped frame (19) arranged inside the elliptical grasping frame (14). The inner side wall of the cavity of the elliptical grasping frame (14) is fixedly connected with a blocking cover (17). The outer side wall of the blocking cover (17) is connected to two electromagnetic beads (18) respectively through two symmetric right-angle guide rods. Both ends of the clamp-shaped frame (19) are fixedly connected with permanent magnetic beads (20). A torsion spring is arranged on the pin shaft for rotation inside the clamp-shaped frame (19).

2. The automatic soldering equipment for manufacturing electronic instruments according to claim 1, characterized in that, The steering component is composed of a steering gear (11) and a retaining rack (12). The top of the welding table (1) is fixedly connected to the end of the electric control guide rail (9) through a fixing plate. The bottom of the welding table (1) is fixedly connected with a plurality of supports. The inner side wall of the electric control guide rail (9) is slidably connected with a sliding seat (10). The bottom end of the sliding seat (10) is rotationally connected to the top end of the steering gear (11) through a rotating shaft.

3. An automatic welding device for manufacturing electronic instruments according to claim 2, characterized in that, The steering gear (11) meshes with the retaining rack (12). The side wall of the retaining rack (12) is fixedly connected to the outer side wall of the electric control guide rail (9) through a fixing rod. The bottom end of the steering gear (11) is fixedly connected to the outer side wall of one side of the elliptical grasping frame (14) close to the electric control guide rail (9) through an adapter plate (13).

4. An automatic welding device for manufacturing electronic instruments according to claim 1, characterized in that, A micro air pump is arranged in the cavity of the elliptical grasping frame (14). An inverted U-shaped fixing plate is arranged on one side of the cavity of the elliptical grasping frame (14). The bottom end of the inverted U-shaped fixing plate is connected with an electric soldering iron (34) through an automatic robotic arm.

5. An automatic welding device for manufacturing electronic instruments according to claim 4, characterized in that, A suspension plate (21) is fixedly connected to the outer wall on one side of the cavity of the elliptical grasping frame (14). The suspension plate (21) is communicated with the micro air pump in the cavity. The bottom end of the suspension plate (21) is fixedly connected with a bifurcated limiting seat (23) through an adjusting robotic arm (22). The bifurcated limiting seat (23) is rotatably connected to the outer side walls of two wire guiding tubes (25) through two sleeves (24) respectively.

6. An automatic welding device for manufacturing electronic instruments according to claim 1, characterized in that, The wire holding assembly is composed of two semi-trapezoidal columns (31) and two electromagnetic pressing plates (33). The outer side wall of the semi-trapezoidal column (31) is slidably connected to the inner side wall of the guiding chute on the inner side wall of the wire guiding tube (25) through a sliding guide rod (30). A wire passing semi-hole is formed in the axis of the semi-trapezoidal column (31). The end of the semi-trapezoidal column (31) is slidably connected to the electromagnetic pressing plate (33) through two limiting sliding columns (32).

7. An automatic welding device for manufacturing electronic instruments according to claim 5, characterized in that, The outer side wall of the wire guiding tube (25) is fixedly connected to the inner side wall of a twisting tooth ring (29). The bottom end of the bifurcated limiting seat (23) is fixedly connected with an adjusting push rod (27) through a mounting plate. The output end of the adjusting push rod (27) is fixedly connected to the bottom end of a double-sided twisting rack (28). The two sides of the double-sided twisting rack (28) are respectively engaged with two twisting tooth rings (29).

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