Welding abutting mechanism of LED point light source welding wire machine

Abstract

The invention discloses a welding abutting mechanism of an LED point light source welding wire machine, which comprises an abutting seat, a plurality of wire grooves are formed in the lower end of the abutting seat, a plurality of rotary grooves are formed in the side wall of the abutting seat, each rotary groove is communicated with the corresponding wire groove through a threaded hole, a screw rod is in sealed threaded connection with the interior of each threaded hole, and a screw rod is arranged in each threaded hole. And one end of the screw rod is rotationally connected with an extrusion plate, the other end of the screw rod is fixedly connected with a square rod, a rotating sleeve is rotationally connected into the rotating groove, and the square rod is arranged in the rotating sleeve in a sliding mode. The rotating sleeve, the square rod and the screw rod are driven to rotate through the rotating mechanism, the screw rod can extend out of the threaded hole and drive the extrusion plate to act on a wire rod in the wire groove, the device can adapt to wire rods of different specifications, and a wire welding machine does not need to be started or stopped to replace a pressing head; and the extrusion part of the pressure head does not need to be electrified and heated again while the processing efficiency is ensured, so that unnecessary electric energy waste is avoided in the long-term batch production process.

Description

Technical Field

[0001] The invention relates to the technical field of LED welding, and in particular to a welding pressing mechanism of an LED point light source wire welding machine. Background Art

[0002] LED point light sources usually require the wires to be welded to a PCB circuit board to form a wire assembly. Currently, during welding, the wires need to be pressed against the circuit board by a pressing mechanism on a wire bonding machine, and then heated and welded.

[0003] Among them, the patent application number "201922089371.2" discloses an LED point light source wire welding machine and its welding pressing mechanism. In the welding pressing mechanism of the device, a pressure head that can be easily disassembled is designed to match wires of different specifications. However, in the batch welding production process, it is often necessary to weld wires of different specifications to different circuit boards. When replacing the pressure head, the wire welding machine needs to be started and stopped frequently, which not only affects the overall processing efficiency, but also requires the extrusion part of the pressure head that can be powered on and heated to be re-powered and heated to a weldable state, wasting unnecessary electrical energy. In view of this, the present application proposes a welding pressing mechanism for an LED point light source wire welding machine. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a welding pressing mechanism for an LED point light source wire welding machine.

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

[0006] A welding pressing mechanism of an LED point light source welding machine includes a pressing seat, a plurality of wire grooves are opened at the lower end of the pressing seat, a plurality of rotating grooves are opened on the side wall of the pressing seat, and each rotating groove is communicated with the wire groove through a threaded hole, a screw is sealed and threadedly connected in the threaded hole, one end of the screw is rotatably connected to an extrusion plate, the other end of the screw is fixedly connected to a square rod, a rotating sleeve is rotatably connected in the rotating groove, the square rod is slidably arranged in the rotating sleeve, and a rotating device for rotating the rotating sleeve is installed in the rotating groove.

[0007] Preferably, the rotating device includes a plurality of driving blades fixedly connected to the side wall of the rotating sleeve, and the driving blades are composed of a connecting rod and a cup wheel fixedly connected, a lifting groove is provided at the upper end of the pressure seat, a driving plug is sealingly and slidably connected in the lifting groove, and the driving plug is connected to the bottom of the lifting groove through a spring, the lifting groove is communicated with the adjacent rotary groove through a liquid outlet pipe, and the lifting groove is filled with driving liquid, two adjacent rotary grooves are communicated through a liquid guide pipe, and a liquid return groove is provided on the side wall of the pressure seat, and the liquid return groove is communicated with the adjacent rotary groove through a recovery component.

[0008] Preferably, the recovery component includes a liquid return pipe, one end of which is communicated with the adjacent rotary tank, and the other end of which is communicated with the liquid return tank. An exhaust port is provided at the inner top of the liquid return tank, and a solenoid valve is installed in the exhaust port.

[0009] Preferably, a driving groove is opened on the side wall of the pressure seat, a rotating shaft is rotatably arranged in the driving groove, two permanent magnet plates are fixedly connected to the side wall of the rotating shaft, and the two permanent magnet plates are symmetrically distributed along the rotating shaft, a spiral coil is embedded on the inner wall of the driving groove, and the extrusion plate is made of copper-nickel alloy material and is electrically connected to the spiral coil.

[0010] Preferably, the spiral coil is also electrically connected to the solenoid valve, and the spiral coil is coupled in a control circuit of the solenoid valve.

[0011] Preferably, the driving fluid is magnetic fluid, and the upper end of the driving plug is fixedly connected with a connecting rod.

[0012] Preferably, the interior of the rotating sleeve is a square hole structure, and the inner wall of the rotating sleeve is tightly fitted with the side wall of the square rod.

[0013] Preferably, one end of the connecting rod is fixedly connected to the side wall of the rotating sleeve, and the other end of the connecting rod is fixedly connected to the cup wheel.

[0014] The present invention has the following beneficial effects:

[0015] 1. By arranging multiple screws and extrusion plates in the wire slot, the rotating sleeve, square rod and screw are driven to rotate by the rotating mechanism, so that the screw can be extended from the threaded hole and drive the extrusion plate to act on the wire in the wire slot. It can adapt to wires of different specifications without starting and stopping the wire welding machine to replace the pressure head, ensuring the processing efficiency and eliminating the need to re-energize and heat the extrusion part of the pressure head, thus eliminating unnecessary waste of electricity in the long-term mass production process;

[0016] 2. By arranging components such as a spiral coil, a rotating shaft and a permanent magnet plate, the rotating shaft and the permanent magnet plate can be driven to rotate during the rotation of the rotating sleeve, so that the magnetic flux inside the spiral coil changes to generate current, and then the extruded plate made of copper-nickel alloy is energized and heated. In this way, the original power of the extruded plate can be appropriately reduced to achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a welding pressing mechanism of an LED point light source wire welding machine proposed by the present invention;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0019] Figure 3It is a schematic diagram of the side cross-section structure of the rotating sleeve, the square rod and the screw rod in the present invention;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the rotating sleeve and the driving blades in the present invention.

[0021] In the figure: 1 abutting seat, 2 lifting groove, 3 connecting rod, 4 driving plug, 5 spring, 6 wire groove, 7 screw, 8 liquid return groove, 9 exhaust port, 10 solenoid valve, 11 driving groove, 12 liquid outlet pipe, 13 threaded hole, 14 spiral coil, 15 liquid return pipe, 16 rotating groove, 17 liquid guide pipe, 18 rotating sleeve, 19 driving blade, 20 square rod, 21 screw, 22 extrusion plate, 23 rotating shaft, 24 permanent magnet plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-4 A welding pressing mechanism of an LED point light source welding machine includes a pressing seat 1, a plurality of wire grooves 6 are provided at the lower end of the pressing seat 1, a plurality of rotating grooves 16 are provided on the side wall of the pressing seat 1, and each rotating groove 16 is connected to the wire groove 6 through a threaded hole 13, a screw 21 is sealed and threadedly connected in the threaded hole 13, one end of the screw 21 is rotatably connected to an extrusion plate 22, and the other end of the screw 21 is fixedly connected to a square rod 20, a rotating sleeve 18 is rotatably connected in the rotating groove 16, the square rod 20 is slidably arranged in the rotating sleeve 18, and a rotating device for rotating the rotating sleeve 18 is installed in the rotating groove 16. The interior of the rotating sleeve 18 is a square hole-shaped structure, and the inner wall of the rotating sleeve 18 is tightly fitted with the side wall of the square rod 20. With such a design, when the rotating sleeve 18 rotates, it will drive the square rod 20 inside it to rotate, and at the same time, the square rod 20 can also slide axially along the inner wall of the rotating sleeve 18, so as to match the screw 21 to rotate and move in the threaded hole 13.

[0024] The rotating device includes a plurality of driving blades 19 fixedly connected to the side wall of the rotating sleeve 18, and the driving blades 19 are composed of a connecting rod 1901 fixedly connected to a cup wheel 1902, one end of the connecting rod 1901 is fixedly connected to the side wall of the rotating sleeve 18, and the other end of the connecting rod 1901 is fixedly connected to the cup wheel 1902.

[0025] The upper end of the pressing seat 1 is provided with a lifting groove 2, in which a driving plug 4 is sealed and slidably connected, and the driving plug 4 is connected to the bottom of the lifting groove 2 through a spring 5. The lifting groove 2 is connected to the adjacent rotary groove 16 through a liquid outlet pipe 12, and the lifting groove 2 is filled with a driving liquid. Two adjacent rotary grooves 16 are connected through a liquid guide pipe 17. The side wall of the pressing seat 1 is provided with a liquid return groove 8, which is connected to the adjacent rotary groove 16 through a recovery component. The driving liquid adopts magnetic fluid, and the upper end of the driving plug 4 is fixedly connected to a connecting rod 3.

[0026] The recovery assembly includes a liquid return pipe 15, one end of which is connected to the adjacent rotary tank 16, and the other end of which is connected to the liquid return tank 8. An exhaust port 9 is provided at the inner top of the liquid return tank 8, and a solenoid valve 10 is installed in the exhaust port 9.

[0027] A driving groove 11 is provided on the side wall of the pressing seat 1. A rotating shaft 23 is rotatably provided in the driving groove 11. Two permanent magnet plates 24 are fixedly connected to the side wall of the rotating shaft 23. The two permanent magnet plates 24 are symmetrically distributed along the rotating shaft 23. A spiral coil 14 is embedded on the inner wall of the driving groove 11. Specifically, Figure 1 As shown, the spiral coil 14 is only distributed on one side of the driving slot 11, so that the two permanent magnet plates 24 will continuously pass through the spiral coil 14 during the continuous rotation along the rotating shaft 23, causing the magnetic flux inside the spiral coil 14 to change and generate an induced current.

[0028] It is worth mentioning that the driving liquid in the above-mentioned medium adopts magnetic fluid, and the permanent magnetic plates 24 on both sides will continuously rotate with the same magnetic poles and different magnetic poles facing each other, which can continuously generate a changing magnetic field on the side of the liquid outlet pipe 12, and the magnetic fluid in this changing magnetic field will also continue to heat up, so that the entire device can be heated up, which can further increase the temperature of the extrusion plate 22, thereby further reducing the current supplied to the extrusion plate 22 while still making it reach the welding temperature, saving energy consumption.

[0029] The extrusion plate 22 is made of copper-nickel alloy material and is electrically connected to the spiral coil 14. The spiral coil 14 is also electrically connected to the solenoid valve 10, and the spiral coil 14 is coupled to the control circuit of the solenoid valve 10. Specifically, the solenoid valve 10 automatically opens after each welding work is completed, and when current is generated inside the spiral coil 14, the current will be transmitted to the control circuit of the solenoid valve 10 in the form of an electrical signal, and when the current signal disappears, the solenoid valve 10 will close for a period of time and then open again. The specific control circuit and the connection and installation method between them are conventional technical means in the existing electrical field, so they are not described in detail.

[0030] Furthermore, the extruded plate 22 made of copper-nickel alloy material can heat up after being energized, which is similar to electric iron, so that the wire can be welded to the base plate.

[0031] During use of the device, the connecting rod 3 is connected to the cylinder telescopic assembly on the wire welding machine, so that the cylinder on the wire welding machine drives the connecting rod 3 to move up and down, so that the device can squeeze and weld the wire. When the bottom of the pressing seat 1 contacts the bottom plate to be welded, the cylinder telescopic assembly continues to push the connecting rod 3 downward, which will push the driving plug 4 to gradually move downward.

[0032] Before welding, the solenoid valve 10 is in an open state, so that the exhaust port 9 is connected to the outside. When the connecting rod 3 is pushed downward, the driving plug 4 is pushed downward to compress the spring 5. When the driving plug 4 is moved downward, the driving liquid below it is squeezed into the corresponding rotary groove 16 through the liquid outlet pipe 12, and the driving liquid in the rotary groove 16 can flow into the adjacent rotary groove 16 through the liquid guide pipe 17, and finally flow into the liquid return groove 8 through the liquid return pipe 15.

[0033] During the flow of the driving fluid in each rotary groove 16, Figure 2 , which will push the driving blade 19 inside it to drive the rotating sleeve 18 to rotate forward, and the rotating sleeve 18 will drive the square rod 20 inside it to rotate synchronously, and the square rod 20 can drive the screw rod 21 to rotate forward, and the screw rod 21 can move downward through the threaded hole 13 when it rotates forward, and the downward movement of the screw rod 21 can drive the extrusion plate 22 to move downward, and until the extrusion plate 22 squeezes the wire in the wire groove 6; in this way, the screw rod 21 can move down by different distances, and the extrusion plate 22 can be pushed down by the corresponding distance, so that wires of different specifications can be pressed without replacing the extrusion part, so there is no need to start and stop the wire welding machine to replace the pressure head, which ensures the processing efficiency and does not need to re-energize and heat the extrusion part of the pressure head, thus eliminating unnecessary waste of electric energy in the long-term mass production process;

[0034] In addition, it is noteworthy that when the rotating sleeve 18 rotates, it will also drive the rotating shaft 23 to rotate, and the rotating shaft 23 will cause the permanent magnet plates 24 on both sides thereof to rotate continuously. The permanent magnet plates 24 will periodically pass through the interior of the spiral coil 14 during the continuous rotation process, and cause the internal magnetic flux to continuously change, so that the spiral coil 14 can generate an induced current and the solenoid valve 10 can be continuously kept in an open state, so that the exhaust port 9 remains connected to the outside, so that the driving liquid can continue to flow into the return liquid tank 8 through the return liquid pipe 15 without hindrance.

[0035] When the extrusion plate 22 is pressed against the outer wall of the wire, the screw 21 will not be able to continue to rotate through the threaded hole 13 and move downward. Even if the driving liquid can continue to flow, it cannot continue to push the driving blade 19 to rotate and rotate the rotating sleeve 18, the square rod 20 and the screw 21. Therefore, the rotating shaft 23 and the permanent magnet plate 24 also stop rotating, and no magnetic flux changes are generated inside the spiral coil 14. After the electromagnetic valve 10 is powered off, the exhaust port 9 is closed, so that the return liquid tank 8 can be sealed. Therefore, the driving liquid cannot continue to flow into the return liquid tank 8 through the return liquid pipe 15, so the driving plug 4 also stops moving downward and stops pushing the driving liquid to flow. Such a design can prevent the extrusion plate 22 from moving downward excessively and crushing the wire.

[0036] Furthermore, when the spiral coil 14 generates current, the copper-nickel alloy extrusion plate 22 will be energized and the temperature will rise to a certain level. Therefore, the original power of the extrusion plate 22 can be appropriately reduced, while the extrusion plate 22 can still be raised to the welding temperature, thereby achieving the effect of saving electricity in long-term mass production.

[0037] After welding is completed, the cylinder telescopic assembly drives the connecting rod 3 to move upward, and no pressure is applied to the entire device. The spring 5 can push the driving plug 4 to move upward and reset. At this time, the solenoid valve 10 is opened again, so the driving exhaust port 9 is connected to the outside again. Therefore, when the driving plug 4 moves upward, the driving liquid in the return liquid tank 8 can be drawn back into the lifting tank 2, and the driving liquid will flow in the reverse direction and pass through each rotary groove 16, which will also drive the driving blades 19 in each rotary groove 16 to rotate in the reverse direction, and the rotating sleeve 18 drives the square rod 20 and the screw 21 to rotate in the reverse direction, so that the screw 21 can move back upward in the threaded hole 13 to facilitate the pressure welding work on the lower side.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding pressing mechanism of an LED point light source wire welding machine, comprising a pressing seat (1), wherein a plurality of wire grooves (6) are provided at the lower end of the pressing seat (1), characterized in that: The side wall of the pressing seat (1) is provided with a plurality of revolving grooves (16), and each of the revolving grooves (16) is communicated with the wire groove (6) through a threaded hole (13); a screw rod (21) is sealedly threadedly connected in the threaded hole (13); one end of the screw rod (21) is rotatably connected to an extrusion plate (22); the other end of the screw rod (21) is fixedly connected to a square rod (20); a rotating sleeve (18) is rotatably connected in the revolving groove (16); the square rod (20) is slidably arranged in the rotating sleeve (18); and a rotating device for rotating the rotating sleeve (18) is installed in the revolving groove (16).

2. The welding pressing mechanism of the LED point light source wire welding machine according to claim 1, characterized in that: The rotating device comprises a plurality of driving blades (19) fixedly connected to the side wall of the rotating sleeve (18), and the driving blades (19) are composed of a connecting rod (1901) and a cup wheel (1902) fixedly connected. A lifting groove (2) is provided at the upper end of the pressure seat (1), and a driving plug (4) is sealingly and slidably connected in the lifting groove (2). The driving plug (4) is connected to the bottom of the lifting groove (2) through a spring (5). The lifting groove (2) is connected to an adjacent rotary groove (16) through a liquid outlet pipe (12), and the lifting groove (2) is filled with driving liquid. Two adjacent rotary grooves (16) are connected through a liquid guide pipe (17). A liquid return groove (8) is provided on the side wall of the pressure seat (1), and the liquid return groove (8) is connected to an adjacent rotary groove (16) through a recovery component.

3. The welding pressing mechanism of the LED point light source wire welding machine according to claim 2, characterized in that: The recovery component comprises a liquid return pipe (15), one end of the liquid return pipe (15) is communicated with an adjacent rotary groove (16), and the other end of the liquid return pipe (15) is communicated with a liquid return groove (8). An exhaust port (9) is provided at the inner top of the liquid return groove (8), and a solenoid valve (10) is installed in the exhaust port (9).

4. The welding pressing mechanism of the LED point light source wire welding machine according to claim 3, characterized in that: The side wall of the pressing seat (1) is provided with a driving groove (11), a rotating shaft (23) is rotatably arranged in the driving groove (11), two permanent magnet plates (24) are fixedly connected to the side wall of the rotating shaft (23), and the two permanent magnet plates (24) are symmetrically distributed along the rotating shaft (23), a spiral coil (14) is embedded on the inner wall of the driving groove (11), and the extrusion plate (22) is made of a copper-nickel alloy material and is electrically connected to the spiral coil (14).

5. The welding pressing mechanism of the LED point light source wire welding machine according to claim 4, characterized in that: The spiral coil (14) is also electrically connected to the solenoid valve (10), and the spiral coil (14) is coupled in a control circuit of the solenoid valve (10).

6. The welding pressing mechanism of the LED point light source wire welding machine according to claim 2, characterized in that: The driving fluid is magnetic fluid, and the upper end of the driving plug (4) is fixedly connected to a connecting rod (3).

7. The welding pressing mechanism of the LED point light source wire welding machine according to claim 1, characterized in that: The interior of the rotating sleeve (18) is a square hole-shaped structure, and the inner wall of the rotating sleeve (18) is tightly fitted with the side wall of the square rod (20).

8. The welding pressing mechanism of the LED point light source wire welding machine according to claim 2, characterized in that: One end of the connecting rod (1901) is fixedly connected to the side wall of the rotating sleeve (18), and the other end of the connecting rod (1901) is fixedly connected to the cup wheel (1902).

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