A fully automatic soldering equipment for transformer production

Abstract

The present invention discloses a fully automatic tinning device for transformer production; belonging to the technical field of transformer production; its technical key points include a vibrating track for conveying semi-finished transformers, and the vibrating track is distributed with a glue melting station, a wire pulling station and a tin plating station along the advancing direction, and a number of infrared pair sensors are distributed on the vibrating track; a first positioning component and a laser peeling component are provided at the glue melting station; a second positioning component is provided at the wire pulling station, a three-dimensional moving component is provided on the side opposite to the second positioning component, and a wire arranging clamp is provided on the three-dimensional moving component; a first two-dimensional moving platform is provided at the tin plating station, and a tin plating component is provided on the first two-dimensional moving platform; the present invention aims to provide a fully automatic tinning device for transformer production with a compact structure and high full automation efficiency; for the full automation tinning of the pins and grounding wires of semi-finished transformers.

Description

Technical Field

[0001] The present invention relates to a fully automatic tinning device, and more specifically, to a fully automatic tinning device for transformer production. Background Art

[0002] With the progress of science and technology and the improvement of living standards, consumers have higher and higher requirements for the safety, reliability and appearance differences of various electrical products. As a common electronic device, the appearance and performance requirements for transformers are also getting higher and higher. During the manufacturing process of a transformer, first, enameled wire is wound around a coil skeleton, connected to pins, and a ground wire is left out. After that, soldering treatment needs to be carried out on the pins and the ground wire.

[0003] When the semi-finished transformer after the winding process is tinned, it is necessary to first remove the outer enamel of the enameled wire wound around the pins to expose the copper wire inside to ensure good electrical conductivity. At the same time, due to the different states of the ground wires after winding, it is necessary to sort out the ground wires of each semi-finished transformer before tinning to keep them in the same direction for subsequent automatic tinning. In the existing production, the ground wire sorting process usually relies on manual handling, which is inefficient. Moreover, the ground wire sorting process is between the enameled wire peeling and tinning processes. When the processing efficiency is low, it is difficult to set up these three processes on a production line for continuous operation. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic tinning device for transformer production with a compact structure and high full automation efficiency in view of the above-mentioned deficiencies of the prior art.

[0005] The technical solution of the present invention is realized as follows: A fully automatic tinning device for transformer production includes a vibrating track for transporting semi-finished transformers. The vibrating track is distributed with a glue melting station, a wire pulling station and a tinning station along the forward direction, and several infrared pair sensors are distributed on the vibrating track to cooperate with each station.

[0006] A first positioning component and a laser peeling component for thermally melting the enameled wire at the pins are provided at the glue melting station; a second positioning component is provided at the wire pulling station, a three-dimensional moving component is provided on the side opposite to the second positioning component, and a wire straightening clamp is provided on the three-dimensional moving component; when the semi-finished transformer is located in the second positioning component, the wire straightening clamp clamps the ground wire on the semi-finished transformer and straightens it in a predetermined direction; a first two-dimensional moving platform is provided at the tinning station, and a tinning component is provided on the first two-dimensional moving platform.

[0007] In the above-mentioned fully automatic tinning device for transformer production, air nozzles blowing towards the vibrating track are provided at the front ends of the glue melting station and the wire pulling station.

[0008] In the above-mentioned fully automatic tinning equipment for transformer production, the wire-straightening fixture includes an installation suspension arranged on the three-dimensional moving component; at least one wire-aligning needle matching the grounding wire of the transformer semi-finished product is vertically arranged at the front end of the installation suspension, and the side surface of the wire-aligning needle is arc-shaped; a horizontal cylinder is arranged at the bottom of the installation suspension, and a clamping plate matching the wire-aligning needle is connected to the free end of the piston rod of the horizontal cylinder.

[0009] In the above-mentioned fully automatic tinning equipment for transformer production, a buffer cotton pad is detachably arranged at the front end of the clamping plate, and one end of the buffer cotton pad close to the wire-aligning needle is arc-shaped; the buffer cotton pad and the wire-aligning needle cooperate to clamp the grounding wire on the transformer semi-finished product and straighten it in a predetermined direction.

[0010] In the above-mentioned fully automatic tinning equipment for transformer production, the hardness of the buffer cotton pad is 55-65 degrees.

[0011] In the above-mentioned fully automatic tinning equipment for transformer production, the three-dimensional moving component is a three-dimensional moving component.

[0012] In the above-mentioned fully automatic tinning equipment for transformer production, the vibration track is composed of two upper and lower limiting plates matching the transformer skeleton. The first positioning component includes corresponding yield long holes arranged on the two limiting plates. An installation bracket is arranged on one side of the vibration track, and a first lifting cylinder is arranged on the installation bracket. A positioning finger that is in interference fit with the inner hole of the transformer skeleton is arranged on the piston rod of the first lifting cylinder.

[0013] A second two-dimensional moving platform that moves along the length direction and the vertical direction of the vibration track is arranged below the yield long hole, and a positioning block for inserting at the yield long hole to block the transformer semi-finished product is arranged on the second two-dimensional moving platform.

[0014] In the above-mentioned fully automatic tinning equipment for transformer production, the positioning finger is composed of two parallel and spaced elastic positioning pieces, and the free end of the elastic positioning piece is conical; the outer contour of the positioning finger is 0.03-0.1 mm larger than the inner hole of the transformer skeleton to be positioned.

[0015] In the above-mentioned fully automatic tinning equipment for transformer production, the tinning component includes a flipping module arranged on the first two-dimensional moving platform, and a tinning fixture is connected to the flipping module; a tin furnace and a flux tank are arranged below the first two-dimensional moving platform, and a baffle for bending the grounding wire is arranged on one side of the tin furnace; a liquid level detection component is arranged on the first two-dimensional moving platform on one side of the tinning fixture, and the liquid level position of the tin furnace is detected by the liquid level detection component before each tinning to determine the descending stroke of the transformer semi-finished product on the tinning fixture.

[0016] In the above-mentioned fully automatic tinning device for transformer production, the flipping module includes a mounting gantry arranged on the first two-dimensional moving platform. Rotating shafts are symmetrically arranged at two free ends of the mounting gantry through bearings, and a rotating drive assembly connected to the rotating shafts is arranged on the mounting gantry; the tinning fixture is connected between the two rotating shafts.

[0017] In the above-mentioned fully automatic tinning device for transformer production, the tinning fixture includes finger cylinders symmetrically arranged at the inner free ends of the respective rotating shafts. Clamping rods are respectively connected between the corresponding finger claws of the two finger cylinders, and a clamping plate is arranged at the lower end of the middle of the clamping rod.

[0018] After the present invention adopts the above structure, the semi-finished transformer that has completed the enameled wire winding process reaches the glue melting station through the vibrating track. The outer enameled layer of the enameled wire at the pin is removed by the laser peeling component to expose the copper wire therein, and then it reaches the wire pulling station. The grounding wire is clamped by the wire straightening fixture and pulled to a state perpendicular to the pin under the drive of the three-dimensional moving component, and finally it is transported to the tinning station for tinning. The whole process is completed automatically, and the continuity between the three processes can be ensured. While saving labor costs, the work efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present invention in detail with reference to the embodiments in the drawings, but it does not constitute any limitation to the present invention.

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a partial structural diagram at position A of the present invention;

[0022] Figure 3 is a schematic structural diagram of the first positioning component of the present invention;

[0023] Figure 4 is a schematic structural diagram of the wire pulling station of the present invention;

[0024] Figure 5 is a side view structural diagram of the wire pulling station of the present invention;

[0025] Figure 6 is a schematic structural diagram of the tinning station of the present invention;

[0026] Figure 7 is a front view structural diagram of the tinning station of the present invention.

[0027] In the figure: 1. Vibration track; 2. Infrared pair sensor; 3. First positioning component; 3a. Yield long hole; 3b. Mounting bracket; 3c. First lifting cylinder; 3d. Positioning finger; 3e. Second two-dimensional moving platform; 3f. Positioning stop block; 3g. Elastic positioning piece; 4. Laser peeling component; 5. Second positioning component; 6. Three-dimensional moving component; 7. Wire-straightening fixture; 7a. Mounting suspension; 7b. Wire-aligning needle; 7c. Horizontal cylinder; 7d. Clamping plate; 7e. Buffer cotton pad; 8. First two-dimensional moving platform; 9. Tin-plating component; 9a. Tin-plating fixture; 9b. Tin furnace; 9c. Flux tank; 9d. Baffle; 9e. Liquid level detection component; 9f. Finger cylinder; 9g. Clamping rod; 9h. Clamping plate; 10. Air jet pipe; 11. Flip module; 11a. Mounting gantry; 11b. Rotating shaft; 11c. Rotation drive component. Detailed implementation mode

[0028] Refer to Figures 1-6 As shown in the figure, a fully automatic tin-plating device for transformer production according to the present invention includes a vibration track 1 for transporting semi-finished transformers. The vibration track 1 is distributed with a glue melting station, a wire pulling station, and a tin-plating station along the forward direction. A number of infrared pair sensors 2 are distributed on the vibration track 1 to cooperate with each station.

[0029] A first positioning component 3 and a laser peeling component 4 for hot melting the enameled wire at the pin are provided at the glue melting station. The laser peeling component is a prior art, and its specific structure and connection method are common knowledge to those skilled in the art, so it will not be elaborated here. By hot melting and peeling the enameled wire at the pin through the laser peeling component, not only can the electrical conductivity stability between the enameled wire and the pin be improved, but also when tin-plating, the time for the pin to immerse in the tin liquid can be greatly reduced, thereby avoiding the deformation of the skeleton or the excessive tin-plating thickness and causing poor quality.

[0030] A second positioning component 5 is provided at the wire pulling station. A three-dimensional moving component 6 is provided on the side opposite to the second positioning component 5. A wire-straightening fixture 7 is provided on the three-dimensional moving component 6; when the semi-finished transformer is located in the second positioning component 5, the wire-straightening fixture 7 clamps the grounding wire on the semi-finished transformer and straightens it in a predetermined direction. According to the actual production situation, the three-dimensional moving component can adopt other moving devices such as linear guides, multi-axis manipulators, etc. Here, the three-dimensional moving component can adjust the moving direction according to the production needs to straighten the grounding wire to different angles, and has a simple structure and low cost compared with the multi-axis manipulator.

[0031] The tinning station is equipped with a first two-dimensional movable platform 8, on which a tinning assembly 9 is mounted. A spiral turning track is connected to the vibrating track at the tinning station, used to flip the semi-finished transformer so that the pins face downward, facilitating tinning of the tinning assembly. A placement track slot is connected to the exit of the spiral turning track for placing the semi-finished transformer.

[0032] In this embodiment, the front ends of the melt and wire drawing stations are equipped with air jets 10 that blow air toward the vibrating track 1. These jets are connected to a pulsed air pump. These jets intermittently inject high-speed air toward the semi-finished transformers on the vibrating track, accelerating them and allowing them to quickly enter the workstations for processing, thereby ensuring processing efficiency. Furthermore, when the semi-finished transformers in front of the jets are pushed into the workstations by the airflow, a certain distance exists between them and the semi-finished transformers behind them. This prevents the semi-finished transformers in the workstations from being squeezed by the positioning assembly while the semi-finished transformers in the workstations continue to advance, potentially damaging them or causing them to fall off the vibrating track.

[0033] In this embodiment, the cable-straightening fixture 7 preferably includes a mounting bracket 7a mounted on a three-dimensional movable assembly 6; at least one cable-straightening pin 7b is vertically mounted on the front end of the mounting bracket 7a, and the side of the cable-straightening pin 7b is arc-shaped. The cable-straightening pin 7b is adapted to engage with the semi-finished transformer grounding wire. A horizontal cylinder 7c is disposed at the bottom of the mounting bracket 7a, and a clamping plate 7d is connected to the free end of the piston rod of the horizontal cylinder 7c. The cable-straightening pin is used to clamp the grounding wire. Due to its arc-shaped side, the cable-straightening pin makes point contact with the grounding wire, ensuring that the grounding wire is smoothly straightened while reducing friction between the fixture and the grounding wire, thereby preventing the grounding wire from being broken.

[0034] In this embodiment, the front end of the clamp 7d is removably fitted with a cushioning pad 7e with a hardness of 55-65 degrees. The end of the cushioning pad 7e, located near the cable management pin 7b, is curved. The cushioning pad 7e and the cable management pin 7b work together to clamp the grounding wire on the semi-finished transformer and straighten it in a predetermined direction. The cushioning pad not only provides the appropriate hardness to secure the grounding wire with the cable management pin, but also ensures smooth movement within the clamp. Compared to other flexible materials such as rubber, the cotton material is less sticky, minimizing the risk of breaking the grounding wire due to excessive surface resistance.

[0035] Preferably, the hardness of the cushion pad 7e is 55-65 degrees. During experiments, we unexpectedly discovered that a hardness of 55-65 degrees is optimal. If the cushion pad is too hard, the resistance will be too great, easily breaking the grounding wire. If the hardness is too soft, it will be difficult to straighten a bent grounding wire. Initially, the cushion pad's hardness was not considered; only its elastic deformation and lack of stickiness were considered.

[0036] In this embodiment, the vibration track 1 is composed of two upper and lower limiting plates that cooperate with the transformer skeleton. The first positioning component 3 includes corresponding yield long holes 3a provided on the two limiting plates. On one side of the vibration track 1, there is an installation bracket 3b. On the installation bracket 3b, there is a first lifting cylinder 3c. On the piston rod of the first lifting cylinder 3c, there is a positioning finger 3d that has an interference fit with the inner hole of the transformer skeleton. The number of the positioning fingers is set according to the processing requirements. In this embodiment, they are all set to three, and three transformer semi-finished products can be positioned simultaneously. The interference fit between the positioning fingers and the through holes of the transformer semi-finished products ensures that the transformer semi-finished products can remain stable during the processing. When the positioning fingers move upward, the transformer semi-finished products are blocked by the upper limiting plate on the vibration track, causing the positioning fingers to disengage.

[0037] Below the yield long hole 3a, there is a second two-dimensional moving platform 3e that moves along the length and vertical directions of the vibration track 1. On the second two-dimensional moving platform 3e, there is a positioning block 3f for inserting and blocking the transformer semi-finished product at the position of the yield long hole 3a. In the initial state, the positioning block blocks at the front end of the yield long hole to ensure that the transformer semi-finished product can be aligned with the positioning fingers above after reaching the yield long hole.

[0038] After the positioning fingers are inserted into the through holes of the transformer semi-finished products located at the yield long holes for positioning, the positioning block moves to the rear end of the yield long hole through the second two-dimensional moving platform to block, preventing the transformer semi-finished products conveyed subsequently from pushing the transformer semi-finished product being processed and avoiding affecting the processing.

[0039] The structure of the second positioning component is the same as that of the first positioning component.

[0040] In this embodiment, preferably, the positioning finger 3d is composed of two parallel and spaced elastic positioning pieces 3g. The free ends of the elastic positioning pieces 3g are conical. The outer contour of the positioning finger 3d is 0.03 - 0.1 mm larger than the inner hole of the transformer skeleton to be positioned. When the positioning finger is located in the through hole of the transformer skeleton, the two elastic positioning pieces expand outward to have an interference fit with the through hole, and the conical free ends facilitate the elastic pieces to enter the through hole.

[0041] In this embodiment, the tin plating assembly 9 includes a flipping module 11 disposed on the first two-dimensional moving platform 8, and a tin plating fixture 9a is connected to the flipping module 11; a tin furnace 9b and a flux tank 9c are disposed below the first two-dimensional moving platform 8, and a baffle 9d for bending the ground wire is disposed on one side of the tin furnace 9b; a liquid level detection component 9e is disposed on the first two-dimensional moving platform 8 on one side of the tin plating fixture 9a, and the liquid level position of the tin furnace 9b is detected by the liquid level detection component 9e before each tin plating to determine the descending stroke of the transformer semi-finished product on the tin plating fixture 9a. The transformer semi-finished product located at the tin plating station is clamped by the tin plating fixture, and is moved to the tin furnace by the first two-dimensional moving platform, and the pins and the ground wire are tin plated with the cooperation of the flipping module. After the ground wire is tin plated, the ground wire is turned upwards by the cooperation of the flipping module and the baffle to prevent the tin liquid from wrapping the ground wire when the pins are tin plated.

[0042] Before each time the first two-dimensional moving platform lowers the transformer semi-finished product to contact the tin liquid, it is necessary to detect the liquid depth in the tin furnace through the liquid level detection component and then feedback it to the control terminal to control the descending height of the first two-dimensional moving platform, so as to ensure that the pins of the transformer semi-finished product can fully contact the tin liquid.

[0043] In this embodiment, the flipping module 11 includes a mounting gantry 11a disposed on the first two-dimensional moving platform 8, and rotating shafts 11b mounted through bearings are symmetrically disposed at two free ends of the mounting gantry 11a, and a rotation driving component 11c connected to the rotating shafts 11b is disposed on the mounting gantry 11a; the tin plating fixture 9a is connected between the two rotating shafts 11b. The rotation driving component adopts a conventional structure that those skilled in the art can think of, and in this embodiment, it is composed of a motor, a rotating shaft and a transmission belt, etc.

[0044] In this embodiment, the tin plating fixture 9a includes finger cylinders 9f symmetrically disposed on the inner free ends of the respective rotating shafts 11b, clamping rods 9g are respectively connected between the finger claws corresponding to the two finger cylinders 9f, and a clamping plate 9h is disposed at the lower end of the middle of the clamping rod 9g.

[0045] During operation, the transformer semi-finished product that has completed the enameled wire winding process is conveyed through the vibrating track, and the air jet pipe blows air on the transformer semi-finished product to accelerate it to reach the glue melting station and is positioned by the positioning fingers, and the laser peeling component burns and heats to remove the outer enamel of the enameled wire at the pins to expose the copper wire.

[0046] The positioning fingers rise, and the transformer semi-finished product that has been peeled is continuously conveyed along the vibrating track to reach the wire pulling station. After being positioned by the positioning fingers, the ground wire is clamped by the wire arranging needle and the clamping plate and is pulled to a state perpendicular to the pins under the drive of the three-dimensional moving component.

[0047] Finally, it is transported to the placement track groove at the tin plating station. The clamping plate clamps the semi-finished transformer with the cooperation of the finger cylinder. The first two-dimensional moving platform moves the semi-finished transformer above the tin furnace. After the liquid level detection component detects the liquid depth in the tin furnace, the flipping component flips the semi-finished transformer to the state where the grounding wire is downward to tin the grounding wire. After the grounding wire is tinned, it is flipped back to the state where the pins are downward and moved to the position where the grounding wire is above the baffle. It moves downward to bend the grounding wire by the baffle, and finally tins the pins.

[0048] The above-mentioned embodiments are the preferred embodiments of the present invention, which are only used to conveniently illustrate the present invention and do not impose any form of limitation on the present invention. Any person with ordinary knowledge in the technical field, without departing from the technical features of the present invention, uses the technical content disclosed by the present invention to make equivalent embodiments of partial changes or modifications, and without departing from the technical feature content of the present invention, still belongs to the scope of the technical features of the present invention.

Claims

1. An automatic soldering device for transformer production, including a vibration track (1) for conveying semi-finished transformers, characterized in that, The vibration track (1) is distributed with a glue melting station, a wire pulling station, and a tin plating station along the forward direction, and a number of infrared opposed sensors (2) are distributed on the vibration track (1) to cooperate with each station; A first positioning component (3) and a laser peeling component (4) for thermally melting the enameled wire at the pin are provided at the glue melting station; A second positioning component (5) is provided at the wire pulling station, a three-dimensional moving component (6) is provided on the side opposite to the second positioning component (5), and a wire straightening clamp (7) is provided on the three-dimensional moving component (6); when the transformer semi-finished product is located in the second positioning component (5), the wire straightening clamp (7) clamps the grounding wire on the transformer semi-finished product and straightens it in a predetermined direction; A first two-dimensional moving platform (8) is provided at the tin plating station, and a tin plating component (9) is provided on the first two-dimensional moving platform (8); The wire straightening clamp (7) includes a mounting suspension (7a) provided on the three-dimensional moving component (6); at least one wire arranging needle (7b) matching the grounding wire of the transformer semi-finished product is vertically provided at the front end of the mounting suspension (7a), and the side surface of the wire arranging needle (7b) is arc-shaped; a horizontal air cylinder (7c) is provided at the bottom of the mounting suspension (7a), and a clamping plate (7d) matching the wire arranging needle (7b) is connected to the free end of the piston rod of the horizontal air cylinder (7c).

2. The fully automatic tinning device for transformer production according to claim 1, wherein, An air jet pipe (10) for blowing air towards the vibration track (1) is provided at the front ends of the glue melting station and the wire pulling station.

3. The fully automatic tinning device for transformer production according to claim 1, characterized in that, A buffer cotton pad (7e) is detachably provided at the front end of the clamping plate (7d), and one end of the buffer cotton pad (7e) close to the wire arranging needle (7b) is arc-shaped; the buffer cotton pad (7e) and the wire arranging needle (7b) cooperate to clamp the grounding wire on the transformer semi-finished product and straighten it in a predetermined direction.

4. The fully automatic tinning device for transformer production according to claim 3, characterized in that, The hardness of the buffer cotton pad (7e) is 55-65 degrees.

5. The fully automatic tinning equipment for transformer production according to claim 1, characterized in that, The vibration track (1) is composed of two upper and lower limiting plates matching the transformer skeleton. The first positioning component (3) includes corresponding yield long holes (3a) provided on the two limiting plates. An installation bracket (3b) is provided on one side of the vibration track (1), a first lifting air cylinder (3c) is provided on the installation bracket (3b), and a positioning finger (3d) in interference fit with the inner hole of the transformer skeleton is provided on the piston rod of the first lifting air cylinder (3c); A second two-dimensional moving platform (3e) moving along the length direction and the vertical direction of the vibration track (1) is provided below the yield long hole (3a), and a positioning stop block (3f) for inserting into the yield long hole (3a) to block the transformer semi-finished product is provided on the second two-dimensional moving platform (3e).

6. The full-automatic tinning equipment for transformer production according to claim 5, characterized in that, The positioning finger (3d) is composed of two parallel and spaced elastic positioning pieces (3g), and the free end of the elastic positioning piece (3g) is conical; the outer contour of the positioning finger (3d) is 0.03-0.1 mm larger than the inner hole of the transformer skeleton to be positioned.

7. The fully automatic tinning device for transformer production according to claim 1, wherein, The tin plating assembly (9) includes a flipping module (11) arranged on the first two-dimensional moving platform (8), and a tin plating fixture (9a) is connected to the flipping module (11); a tin furnace (9b) and a flux tank (9c) are arranged below the first two-dimensional moving platform (8), and a baffle (9d) for bending the grounding wire is arranged on one side of the tin furnace (9b); a liquid level detection component (9e) is arranged on the first two-dimensional moving platform (8) on one side of the tin plating fixture (9a), and the liquid level position of the tin furnace (9b) is detected by the liquid level detection component (9e) before each tin plating to determine the descending stroke of the transformer semi-finished product on the tin plating fixture (9a).

8. The fully automatic tinning device for transformer production according to claim 7, characterized in that, The flipping module (11) includes a mounting gantry (11a) arranged on the first two-dimensional moving platform (8), rotating shafts (11b) installed through bearings are symmetrically arranged at two free ends of the mounting gantry (11a), and a rotation driving component (11c) connected to the rotating shafts (11b) is arranged on the mounting gantry (11a); the tin plating fixture (9a) is connected between the two rotating shafts (11b).

9. The fully automatic tinning device for transformer production according to claim 8, characterized in that, The tin plating fixture (9a) includes finger cylinders (9f) symmetrically arranged at the inner free ends of the respective rotating shafts (11b), clamping rods (9g) are respectively connected between the finger claws corresponding to the two finger cylinders (9f), and a clamping plate (9h) is arranged at the lower end of the middle of the clamping rod (9g).

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