Aviation equipment circuit board welding device

Abstract

The present invention discloses a welding device for circuit boards of aviation equipment, including a workbench, on which a conveying mechanism and a clamp for fixing the circuit board are provided; a top plate, which is arranged above the conveying mechanism, a welding gun is arranged at the bottom of the top plate, and a welding wire feeding mechanism is arranged at the top of the top plate; a lifting block, which is arranged above the top plate; a first driving mechanism, which is arranged at the bottom of the lifting block; a first lifting power member, whose driving end is connected to the top of the lifting block; a cooling protective cover; a second driving mechanism, whose driving end is connected to the cooling protective cover; and a second lifting power member, whose driving end is connected to the second driving mechanism. The present invention has the beneficial effect that after high-temperature welding, the circuit board can be transferred to the cooling protective cover in the cooling space in time for cooling, and at the same time, after the welding work is completed, the welding gun at high temperature can be moved to the cooling protective cover for cooling and protection, avoiding the risk of inspectors touching the high-temperature welding gun.

Description

Technical Field

[0001] The present invention relates to the field of welding equipment, and more particularly to a welding device for a circuit board of aviation equipment. Background Art

[0002] Aviation equipment usually contains a large number of circuit boards. During the manufacturing process of these circuit boards, the positive and negative pins of the electronic components need to be welded to the circuit boards by welding guns and welding wires at high temperature. In the actual manufacturing process, the welding of circuit boards is usually an assembly line work. For example, the patent with application number 202011343385.3 discloses a welding tool for circuit boards, including a pair of symmetrically arranged support seats; a carrier frame is set between the two support seats; a first drive block is slidably mounted on the carrier frame; a guide rail is fixed at the lower end of the first drive block; a second drive block is slidably mounted on the guide rail; the sliding direction of the second drive block is perpendicular to the sliding direction of the first drive block; a lifting component is vertically fixed on the lower surface of the second drive block; a welding gun is fixed at the output end of the lifting component; a feeding component is installed at the output end of the lifting component; a tin bar corresponding to the welding gun is inserted into the feeding component. The structural design is reasonable, easy to use, and effectively improves the welding efficiency of the circuit board, and has a high market application value. However, the above structure does not have a cooling structure. If the electronic components are not cooled in time after welding, the welding wires of different pins may fuse together, which will eventually lead to poor welding quality of the circuit board. After high-temperature welding, the welding gun is directly exposed to the air. If the inspector accidentally touches it, he may be easily burned. Summary of the invention

[0003] An object of the present invention is to solve at least the above-mentioned problems and to provide an aviation equipment circuit board welding device, which can promptly transfer the circuit board to a cooling protective cover in a cooling space for cooling after high-temperature welding. At the same time, after the welding work is completed, the welding gun at high temperature can be moved to the cooling protective cover for cooling and protection, thereby avoiding the risk of inspectors touching the high-temperature welding gun and protecting the welding gun at the same time.

[0004] In order to achieve these purposes and other advantages according to the present invention, there is provided an aviation equipment circuit board welding device, comprising:

[0005] A workbench, on which a conveying mechanism having a conveying direction consistent with the length direction of the workbench and a clamp for fixing the circuit board are provided. In the conveying direction, the space where the clamp is located is a welding space, and the downstream of the welding space is a cooling space;

[0006] A top plate is arranged above the conveying mechanism, a welding gun is arranged at the bottom of the top plate, a welding wire feeding mechanism is arranged at the top of the top plate, and a wire feeding end of the welding wire feeding mechanism is close to the welding end of the welding gun;

[0007] A lifting block, which is arranged above the top plate;

[0008] A first driving mechanism, which is arranged at the bottom of the lifting block, and a driving end of the first driving mechanism is connected to the top of the top plate to drive the top plate to move along the width direction of the workbench and along the length direction of the workbench;

[0009] A first lifting power member, a driving end of which is connected to the top of the lifting block to drive the lifting block to move up and down;

[0010] A cooling protective cover is arranged in the cooling space, and the cooling protective cover is connected to the cooling source equipment through a hose;

[0011] A second driving mechanism, a driving end of which is connected to the cooling protective cover to drive the cooling protective cover to flip;

[0012] A second lifting power member, a driving end of which is connected to the second driving mechanism to drive the second driving mechanism and the cooling protective cover to rise and fall synchronously;

[0013] Among them, the conveying mechanism moves the welded circuit board to the cooling space, and the second lifting power member drives the cooling protective cover to descend and the cover is arranged on the circuit board to cool the circuit board; when the welding gun is used, the second driving mechanism drives the cooling protective cover to flip over until the cover opening faces upward, and the first lifting power member drives the top plate to move up until the welding gun is located above the cooling protective cover, and then the first driving mechanism drives the top plate to move toward the cooling protective cover until the welding gun is located directly above the cooling protective cover, and then the first lifting power member drives the top plate to descend until the top plate is attached to the end wall of the cover opening of the cooling protective cover to protect the welding gun.

[0014] Preferably, it further comprises a pair of first support columns and a first cross bar, wherein the pair of first support columns are arranged on both sides of the width direction of the workbench, and the first cross bar is connected between the tops of the pair of first support columns;

[0015] The first lifting power member includes a first driving telescopic rod, the fixed end of the first driving telescopic rod is arranged at the bottom of the first cross bar, the telescopic end of the first driving telescopic rod is connected to the lifting block, the lifting block is arranged along the width direction of the workbench, the lifting block is hollow inside, the two ends of the lifting block are respectively slidably connected to the adjacent first support column, and the bottom of the lifting block is provided with a passage hole arranged along the width direction of the workbench;

[0016] The first driving mechanism comprises a first screw, a first motor, a first slide block, a pair of vertical plates, a cross plate, a second screw, a second slide block, and a second motor, wherein the first screw is arranged along the width direction of the working table, one end of the first screw is rotatably connected to the inner side wall of the lifting block, and the other end is rotatably extended out of the lifting block, the extended end of the first screw is coaxially fixed with the output shaft of the first motor, the first slide block is screwed on the first screw and the top of the first slide block is slidably connected to the inner top wall of the lifting block, the bottom of the first slide block passes through the through hole and is connected to the cross plate, the cross plate is arranged along the length direction of the working table, a pair of vertical plates are arranged at both ends of the cross plate along the length direction of the cross plate, one end of the second screw is rotatably connected to one of the vertical plates, and the other end is rotated to extend out of the other vertical plate and is coaxially fixed to the output shaft of the second motor, the second slide block is screwed on the second screw and the top of the second slide block is slidably connected to the bottom wall of the cross plate, and the bottom of the second slide block is connected to the top plate.

[0017] Preferably, it further comprises a pair of second support columns and a second cross bar, wherein the pair of second support columns are arranged on both sides of the width direction of the workbench, and the second cross bar is connected between the tops of the pair of second support columns;

[0018] The second lifting power member includes a pair of second driving telescopic rods, which are respectively arranged at two ends of the bottom of the second cross bar along the width direction of the workbench, the fixed end of the second driving telescopic rod is connected to the bottom of the second cross bar, and the telescopic end is provided with a mounting block, and the cooling protective cover is arranged between the pair of mounting blocks;

[0019] The second driving mechanism includes a third motor and a pair of coaxial support rods. The third motor is installed on one of the mounting blocks. The support rods are arranged horizontally. The pair of support rods are arranged on both sides of the cooling protective cover along the width direction of the workbench. One end of each support rod close to the cooling protective cover is connected to the cooling protective cover; wherein the end of the support rod close to the third motor away from the cooling protective cover is coaxially fixed to the output shaft of the third motor, and the end of the other support rod away from the cooling protective cover is rotated to pass through the corresponding mounting block.

[0020] Preferably, the welding wire feeding mechanism includes a welding wire feeding part, a roller assembly, and a guide tube. The welding wire feeding part is supported above the top plate, and the roller assembly is installed on the top plate. The roller assembly includes two rows of rollers rotating relative to each other, and the two rows of rollers clamp and convey the welding wire through the friction force generated by the relative rotation. The top end of the guide tube is close to the wire outlet end of the roller assembly, and the bottom end passes through the top plate and is close to the welding end of the welding gun. Driven by the relative rotation of the two rows of rollers, the welding wire of the welding wire feeding part successively passes through the two rows of rollers and the guide tube and is fed to the welding end of the welding gun.

[0021] Preferably, the clamp includes a pair of horizontally arranged and opposite electric push rods, a pair of vertically arranged clamping plates, and the pair of electric push rods, the pair of clamping plates, and the pair of first support columns correspond one to one. The fixed end of the electric push rod is arranged on the corresponding first support column, and the corresponding clamping plate is arranged on the telescopic end of the electric push rod, and a circuit board clamping space is formed between the pair of clamping plates.

[0022] Preferably, a soft cushion is provided on the end wall of the cooling protective cover.

[0023] Preferably, the feeding mechanism is arranged at an angle.

[0024] The present invention has at least the following beneficial effects:

[0025] By arranging a workbench, a conveying mechanism, a clamp, a welding space, a cooling space, a top plate, a welding gun, a welding wire feeding mechanism, a lifting block, a first lifting power part, a first driving mechanism, a cooling protective cover, a second lifting power part, and a second driving mechanism, a welding device for circuit boards of aviation equipment is provided. After high-temperature welding, the circuit boards can be transferred to the cooling protective cover for cooling in time. At the same time, after the welding work is completed, the welding gun at high temperature can be moved to the cooling protective cover for cooling and protection, thereby avoiding the risk of inspectors touching the high-temperature welding gun and protecting the welding gun at the same time.

[0026] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural front view (initial state) of the aviation equipment circuit board welding device according to one of the technical solutions of the present invention;

[0028] Figure 2 This is a structural front view of the aviation equipment circuit board welding device described in one of the technical solutions of the present invention (the welding gun is placed in the cooling protective cover);

[0029] Figure 3 This is a structural side view of an aviation equipment circuit board welding device according to one of the technical solutions of the present invention;

[0030] Figure 4 This is a top view of the structure of the drum and two rows of rollers described in one of the technical solutions of the present invention;

[0031] Figure 5 This is a structural side view of the cooling protective cover and a pair of second driving telescopic rods according to one of the technical solutions of the present invention;

[0032] Figure 6The front view sectional view of the second mounting box according to one of the technical solutions of the present invention;

[0033] Figure 7 The side view sectional view of the second mounting box according to one of the technical solutions of the present invention.

[0034] Reference numerals: 1 - workbench; 2 - conveying mechanism; 3 - first support column; 4 - first cross bar; 5 - first driving telescopic rod; 6 - lifting block; 7 - first screw rod; 8 - first slider; 9 - cross plate; 10 - vertical plate; 11 - second screw rod; 12 - passage hole; 13 - second slider; 14 - top plate; 15 - welding torch; 16 - guiding tube; 17 - first mounting box; 18 - second mounting box; 19 - welding wire; 20 - electric push rod; 21 - clamping plate; 22 - second support column; 23 - first motor; 24 - second motor; 25 - third motor; 26 - second driving telescopic rod; 27 - cooling protective cover; 28 - support rod; 29 - reel; 30 - roller; 31 - hose; 32 - second cross bar; 33 - mounting block; 35 - drive chain; 36 - welding space; 37 - cooling space; 38 - first rotating shaft; 39 - first driving motor; 40 - wire inlet hole; 41 - second wire outlet hole; 42 - U-shaped plate; 43 - perforation; 44 - push-pull rod; 45 - bolt; 46 - second rotating shaft; 47 - second driving motor; 48 - cover plate. Detailed implementation manners

[0035] The following further describes the present invention in detail with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0036] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0037] As Figure 1-7 shown, the present invention provides a welding device for an aviation equipment circuit board, including:

[0038] A workbench 1, on which there is a conveying mechanism 2 with a conveying direction consistent with the length direction of the workbench 1 and a fixture for fixing the circuit board. In the conveying direction, the space where the fixture is located is a welding space, and the downstream of the welding space is a cooling space;

[0039] A top plate 14, which is arranged above the conveying mechanism 2. A welding torch 15 is arranged at the bottom of the top plate 14, and a welding wire feeding mechanism is arranged at the top of the top plate 14. The wire feeding end of the welding wire feeding mechanism is close to the welding end of the welding torch 15;

[0040] A lifting block 6, which is arranged above the top plate 14;

[0041] A first driving mechanism, which is disposed at the bottom of the lifting block 6, wherein a driving end of the first driving mechanism is connected to the top of the top plate 14 to drive the top plate 14 to move along the width direction of the workbench 1 and along the length direction of the workbench 1;

[0042] A first lifting power member, a driving end of which is connected to the top of the lifting block 6 to drive the lifting block 6 to move up and down;

[0043] A cooling protective cover 27 is arranged in the cooling space and is connected to a cooling source device through a hose;

[0044] A second driving mechanism, a driving end of which is connected to the cooling protective cover 27 to drive the cooling protective cover 27 to flip;

[0045] A second lifting power member, whose driving end is connected to the second driving mechanism to drive the second driving mechanism and the cooling protective cover 27 to rise and fall synchronously;

[0046] The conveying mechanism 2 moves the welded circuit board to the cooling space, and the second lifting power member drives the cooling shield 27 to descend and cover the circuit board to cool the circuit board; when the welding gun 15 is used, the second driving mechanism drives the cooling shield 27 to flip over until the cover opening faces upward, and the first lifting power member drives the top plate 14 to move upward until the welding gun 15 is located above the cooling shield 27, and then the first driving mechanism drives the top plate 14 to move toward the cooling shield 27 until the welding gun 15 is located directly above the cooling shield 27, and then the first lifting power member drives the top plate 14 to descend until the top plate 14 is attached to the end wall of the cover opening of the cooling shield 27 to protect the welding gun 15;

[0047] In the above technical scheme, a conveying mechanism 2 is provided on the workbench 1, and the overall structure of the workbench 1 and the conveying mechanism 2 can be regarded as an existing belt conveyor structure. Specifically, the conveyor belt in the existing belt conveyor mechanism and the power component that drives the conveyor belt to transmit together constitute the conveying mechanism 2, and the support frame that supports and installs the conveyor belt and the power component is the workbench 1; a clamp is provided on the workbench 1, and the clamp is used to clamp the circuit board. The structure of the clamp can be implemented in a variety of ways, as long as it can clamp / loosen the circuit board on the conveying surface of the conveying mechanism 2, for example: the clamp can be a pair of synchronously telescopic electric push rods, the fixed ends of the pair of electric push rods are installed on the workbench, the telescopic ends of the pair of electric push rods are opposite, and a vertical clamp is provided on the telescopic end of each electric push rod, and the bottom end of the clamp is attached to or close to the conveying surface of the conveying mechanism, so that the circuit board on the conveying surface is clamped under the push of the pair of electric push rods; in the space above the conveying mechanism in the conveying direction, the space where the clamp is located is the welding space 36, and the downstream space of the welding space 36 is the cooling space 37. It should be noted that the attached Figure 1The dotted frame does not represent any component, but is only drawn to illustrate the location and relative position of the welding space 36 and the cooling space 37;

[0048] A top plate 14 is provided above the conveying mechanism 2, and a welding gun 15 and a welding wire feeding mechanism are installed on the top plate 14. Specifically, the welding gun 15 is installed at the bottom of the top plate 14, and the welding wire feeding mechanism is installed at the top of the top plate 14. The welding gun 15 and the welding wire feeding mechanism are both common structural components in the art. The wire feeding end of the welding wire feeding mechanism is close to the welding end of the welding gun 15, so that when the welding gun 15 is welding, the welding wire 19 is continuously fed to the welding gun 15 to ensure the smooth progress of the welding work. It should be noted that Figure 1 and Figure 2 The feeding mechanism is not shown;

[0049] A lifting block 6 is provided above the top plate 14, and a first driving mechanism is provided at the bottom of the lifting block 6. The driving end of the first driving mechanism is fixedly connected to the top of the top plate 14 to drive the top plate 14 to move in the length direction and the width direction of the workbench 1, so as to move around the circuit board in the front, back, left, and right directions, thereby fully welding the components on the circuit board; the structure of the first driving mechanism can be implemented in a variety of ways, for example, it can be an existing XY axis linear slide structure;

[0050] A cooling protective cover 27 is provided in the cooling space, and the cooling protective cover 27 is provided above the conveying mechanism 2. A cold source inlet is provided on the cooling protective cover 27, and the cold source inlet is connected to a hose 31. One end of the hose 31 away from the cooling protective cover 27 is connected to the output end of a cold source device, and the cold source device can be a device for cooling air.

[0051] The structures of the second lifting power member and the second driving mechanism have various forms, one of which is listed here: the second lifting power member is a hydraulic rod, the second driving mechanism is a motor, the fixed end of the hydraulic rod is supported on a supporting surface such as the ground, the telescopic end of the hydraulic rod is provided with a mounting frame, the motor is mounted on the mounting frame, the output end of the motor is fixedly connected to the side wall of the cooling protective cover 27, so that when the output shaft of the motor rotates, the cooling protective cover 27 is driven to flip, and the telescopic end of the hydraulic rod is extended and retracted to drive the cooling protective cover 27 and the motor to rise and fall synchronously;

[0052] In this technical solution, during use: in the initial state, the hood opening of the cooling protective cover 27 faces downward. When welding a circuit board, the clamp clamps the circuit board therein, firstly starts the first lifting power member to drive the lifting block 6 to descend, thereby driving the welding end of the welding gun 15 close to the circuit board, and then starts the first driving mechanism, which drives the welding gun 15 to move in the front, back, left and right directions of the circuit board, and at the same time, the welding wire feeding mechanism cooperates with the welding wire 19 to fully weld the electronic components on the circuit board; when the circuit board is welded and needs to be cooled, first the clamp releases the circuit board, and then starts the conveying mechanism 2 to move the welded circuit board to the cooling space, and then the second lifting power member drives the cooling protective cover 27 to descend until the cooling protective cover 27 is set outside the circuit board, and then starts the cold source equipment to cool the circuit board located in the cooling protective cover 27; when the overall welding work is completed, the welding gun 15 is in a high temperature state, At this time, the second lifting power member is first started to drive the cooling protective cover 27 to move upward, and then the second driving mechanism is started to flip the cooling protective cover 27 until the cover opening faces upward, and then the second lifting power member is started to drive the cooling protective cover 27 to move downward until the bottom of the cooling protective cover 27 is attached to the conveying surface of the conveying mechanism 2, and then the first lifting power member is started to drive the lifting block 6 to move upward, thereby driving the welding gun 15 to move upward until the welding gun 15 is located above the cooling protective cover 27 (at this time, the welding gun is still located on the outside of the cooling protective cover 27), and then the first driving mechanism is started to drive the welding gun 15 to move toward the cooling protective cover 27 until the welding gun 15 moves to the top of the cooling protective cover 27. At this time, the first lifting power member is started again to drive the lifting block 6 to descend until the top plate 14 is attached to the cover opening of the cooling protective cover 27. At this time, the high-temperature welding gun 15 is cooled (natural cooling or cooling by connecting to a cold source device) and protected in the cooling protective cover 27;

[0053] The beneficial effect obtained by adopting this technical solution is that, by arranging a workbench 1, a conveying mechanism 2, a clamp, a top plate 14, a welding gun 15, a welding wire feeding mechanism, a lifting block 6, a first lifting power part, a first driving mechanism, a cooling protective cover 27, a second lifting power part, and a second driving mechanism, an aviation equipment circuit board welding device is provided, which can transfer the circuit board to the cooling protective cover 27 for cooling in time after high-temperature welding of the circuit board. At the same time, after the welding work is completed, the welding gun 15 at high temperature is moved to the cooling protective cover 27 for cooling and protection, thereby avoiding the risk of inspectors touching the high-temperature welding gun 15 and protecting the welding gun 15 at the same time.

[0054] In another technical solution, it further includes a pair of first support columns 3 and a first cross bar 4, wherein the pair of first support columns 3 are arranged on both sides of the width direction of the workbench 1, and the first cross bar 4 is connected between the tops of the pair of first support columns 3;

[0055] The first lifting power member includes a first driving telescopic rod 5, the fixed end of the first driving telescopic rod 5 is arranged at the bottom of the first cross bar 4, the telescopic end of the first driving telescopic rod 5 is connected to the lifting block 6, the lifting block 6 is arranged along the width direction of the workbench 1, the lifting block 6 is hollow inside, the two ends of the lifting block 6 are respectively slidably connected to the adjacent first support column 3, and the bottom of the lifting block 6 is provided with a passage hole 12 arranged along the width direction of the workbench 1;

[0056] The first driving mechanism includes a first screw rod 7, a first motor 23, a first slider 8, a pair of vertical plates 10, a horizontal plate 9, a second screw rod 11, a second slider 13, and a second motor 24. The first screw rod 7 is arranged along the width direction of the workbench 1. One end of the first screw rod 7 is rotatably connected to the inner side wall of the lifting block, and the other end is rotatably extended out of the lifting block 6. The extended end of the first screw rod 7 is coaxially fixed to the output shaft of the first motor 23. The first slider 8 is screwed to the first screw rod 7 and the top of the first slider 8 is slidably connected to the inner top wall of the lifting block 6. The bottom of the first sliding block 8 passes through the through hole 12 and is connected to the horizontal plate 9. The horizontal plate 9 is arranged along the length direction of the workbench 1. A pair of vertical plates 10 are arranged at both ends of the horizontal plate 9 along the length direction. One end of the second screw rod 11 is rotatably connected to one of the vertical plates 10, and the other end is rotated and extended out of the other vertical plate 10 and then coaxially fixedly connected to the output end of the second motor 24. The second sliding block 13 is screwed on the second screw rod 11, and the top of the second sliding block 13 is slidably connected to the bottom wall of the horizontal plate 9, and the bottom of the second sliding block 13 is connected to the top plate 14;

[0057] In this technical solution, the workbench 1 is vertically provided with first support columns 3 on both sides along the width direction thereof, a first cross bar 4 is connected between the tops of a pair of first support columns 3, a first driving telescopic rod 5 is provided at the bottom of the first cross bar 4, a fixed end of the first driving telescopic rod 5 is fixedly connected to the bottom of the first cross bar 4, and a telescopic end is connected to a lifting block 6, the lifting block 6 is hollow inside, similar to a box structure, the lifting block 6 is arranged between a pair of first support columns 3, the length direction of the lifting block 6 is consistent with the width direction of the workbench 1, and the two ends of the lifting block 6 along the length direction are respectively slidably connected to the side walls of the adjacent first support columns 3;

[0058] The first screw rod 7 is arranged along the length direction of the lifting block 6. One end of the first screw rod 7 is rotatably connected to the inner wall of the lifting block 6, and the other end rotatably passes through the side wall of the lifting block 6 opposite to the inner wall and extends outside the lifting block 6. A first motor 23 is installed on the side wall of the first support column 3, and the output shaft of the first motor 23 is coaxially fixed to the extending end of the first screw rod 7. A through hole 12 is formed through the bottom of the lifting block 6. The through hole 12 is a long strip-shaped hole arranged along the length direction of the lifting block 6. A first slider 8 is screwed on the first screw rod 7. The first slider 8 is arranged vertically. The top of the first slider 8 is slidably connected to the inner top wall of the lifting block 6, and the bottom passes through the through hole 12 and extends outside the lifting block 6.

[0059] A cross plate 9 is fixedly connected to the bottom of the first slider 8. The cross plate 9 is arranged along the length direction of the workbench 1. Vertical plates 10 are vertically arranged at both ends of the cross plate 9 along its length direction. The vertical plates 10 and the cross plate 9 form a U-shaped plate structure. A second screw rod 11 is arranged between the pair of vertical plates 10. The second screw rod 11 is horizontally arranged along the length direction of the workbench 1. One end of the second screw rod 11 is rotatably connected to one of the vertical plates 10, and the other end rotatably passes through the other vertical plate 10. A second motor 24 is installed on the side wall of the other vertical plate 10, and the output shaft of the second motor 24 is coaxially fixed to the extending end of the second screw rod 11. A second slider 13 is screwed on the second screw rod 11. The top of the second slider 13 is slidably connected to the inner top wall of the cross plate 9, and the bottom is connected to a top plate 14. A welding torch 15 is arranged at the bottom of the top plate 14. A wire feeding mechanism is arranged at the top of the top plate 14. The wire feeding end of the wire feeding mechanism is close to the welding end of the welding torch 15 to convey a welding wire 19 to the welding end of the welding torch 15.

[0060] In this technical solution, when welding a circuit board, the circuit board is clamped by a fixture, and then the first driving telescopic rod 5 is driven to descend until the welding end of the welding torch 15 is close to the position to be welded. Then, through the mutual cooperation of the first motor 23 and the second motor 24, the welding torch 15 is moved back and forth and left and right on the circuit board, so as to weld each electronic component on the circuit board. After the circuit board is welded, the conveying mechanism 2 conveys the circuit board to the cooling space, and then the second lifting power member drives the cooling protective cover 27 to descend until the cooling protective cover 27 covers the welded circuit board for cooling.

[0061] The technical solution has the beneficial effect of providing a driving structure for driving the welding gun 15 to move in the vertical direction, the width direction of the workbench 1, and the length direction of the workbench 1 by arranging the first support column 3, the first cross bar 4, the first drive telescopic rod 5, the lifting block 6, the first screw 7, the first motor 23, the first slide block 8, a pair of vertical plates 10, the cross plate 9, the second screw 11, the second slide block 13, and the second motor 24. The components are widely available and easy to assemble, easy to use, and have a good driving effect.

[0062] In another technical solution, it further includes a pair of second support columns 22 and a second cross bar 32. The pair of second support columns 22 are arranged on both sides of the width direction of the workbench 1. The second cross bar 32 is connected between the tops of the pair of second support columns 22.

[0063] The second lifting power member includes a pair of second driving telescopic rods 26, which are respectively arranged at both ends of the bottom of the second cross bar 32 along the width direction of the workbench 1, the fixed end of the second driving telescopic rod is connected to the bottom of the second cross bar 32, and the telescopic end is provided with a mounting block 33, and the cooling protective cover 27 is arranged between the pair of mounting blocks 33;

[0064] The second driving mechanism comprises a third motor 25 and a pair of coaxial support rods 28. The third motor 25 is mounted on one of the mounting blocks 33. The support rods 28 are arranged horizontally. The pair of support rods 28 are arranged on both sides of the cooling protective cover 27 along the width direction of the workbench 1. One end of each support rod 28 close to the cooling protective cover 27 is connected to the cooling protective cover 27. The end of the support rod 28 close to the third motor 25 away from the cooling protective cover 27 is coaxially fixed to the output shaft of the third motor 25, and one end of the other support rod 28 away from the cooling protective cover 27 rotates to pass through the corresponding mounting block 33.

[0065] In this technical solution, specifically, the workbench 1 is vertically provided with second support columns 22 at both ends along the width direction thereof, and the top ends of a pair of second support columns 22 are connected to a second cross bar 32; the second power lifting member includes a pair of second drive telescopic rods 26, and the pair of second drive telescopic rods 26 are respectively arranged at both ends of the second cross bar 32 along the width direction of the workbench 1, and the fixed ends of the second drive telescopic rods 26 are fixedly connected to the bottom of the second cross bar 32, and the telescopic ends of the second drive telescopic rods 26 are connected to mounting blocks 33, and a cooling protective cover 27 is provided between the pair of mounting blocks 33, and the cooling protective cover 27 is close to each mounting block. A support rod 28 is provided at each block 33, the support rod 28 is horizontally arranged, and a pair of support rods 28 are coaxial, the support rod 28 is preferably arranged at the middle of the side wall of the cooling protective cover 27, a pair of support rods 28 corresponds to a pair of mounting blocks 33, one of the pair of support rods 28 is rotatably connected to the corresponding mounting block 33, and the other support rod 28 is rotatably connected to the corresponding mounting block 33 and rotates out of the mounting block 33, a third motor 25 is mounted on the mounting block 33, and the output end of the third motor 25 is coaxially fixedly connected to the outgoing end of the support rod 28, so that when the output shaft of the third motor 25 rotates, the cooling protective cover 27 is driven to flip; it should be noted that Figure 3 The side view is only a schematic diagram, which does not show the cooling shield 27, the second lifting power member, the second driving mechanism, the second support column 22, the second cross bar 32 and other accessories;

[0066] In this technical solution, during use, in the initial state, the cooling shield 27 is located above the conveying mechanism 2 and the shield opening faces downward. When the circuit board is welded and needs to be cooled, the conveying mechanism 2 conveys the circuit board to the bottom of the cooling shield 27, and a pair of second driving telescopic rods 26 drive the cooling shield 27 to descend and cover the circuit board therein, and then the cooling source device provides a cold source (such as cold air provided by a refrigeration air device) to enter the cooling shield 27 (to avoid the cooling shield 27 being closed internally, a suitable amount of small air holes can be opened on its side wall or bottom to ensure the circulation of cooling air, or the cooling shield 27 can be lowered to a position close to the conveying surface of the conveying mechanism 2, as long as the cold source is emitted and circulated toward the circuit board to cool the circuit board), the circuit board is cooled; when the welding work is completed, it is necessary When protecting the welding gun 15 at high temperature, first start the third motor 25, flip the cooling protective cover 27 to the cover mouth facing upwards, then lower the cooling protective cover 27 until the cooling protective cover 27 and the conveying surface of the conveying mechanism 2 are in contact, then start the first driving telescopic rod 5 to move the welding gun 15 upwards until the welding gun 15 is located above the cooling protective cover 27, then use the second motor 24 and the third motor 25 in coordination to move the welding gun 15 to just above the cooling protective cover 27, then start the first driving telescopic rod 5 again to move the welding gun 15 down until the cooling protective cover 27 and the top plate 14 are in contact, at this time, the cold source device can be started to indirectly cool the welding gun 15 by providing cold air into the cooling protective cover 27, or the high-temperature welding gun 15 can be naturally cooled under the protection of the cooling protective cover 27, and the specific cooling method should be selected according to the actual situation;

[0067] The beneficial effect obtained by adopting this technical solution is that, by setting the second support column 22, the second cross bar 32, the second drive telescopic rod 26, the mounting block 33, and the third motor 25, a structure is provided for driving the cooling protective cover 27 to rise and fall, and driving the cooling protective cover 27 to flip. The structure is reasonably designed and simple to manufacture, and is easy to use.

[0068] In another technical solution, the welding wire feeding mechanism includes a welding wire feeding part, a roller assembly, and a guide tube 16. The welding wire feeding part is supported above the top plate 14, and the roller assembly is installed on the top plate 14. The roller assembly includes two rows of rollers 30 that rotate relative to each other. The two rows of rollers 30 clamp and convey the welding wire through the friction force generated by the relative rotation. The top end of the guide tube 16 is close to the wire outlet end of the roller assembly, and the bottom end passes through the top plate 14 and is close to the welding end of the welding gun 15. The welding wire 19 of the welding wire feeding part is driven by the relative rotation of the two rows of rollers 30, and then passes through the two rows of rollers 30 and the guide tube 16 in sequence to feed the welding end of the welding gun 15.

[0069] In this technical solution, specifically, the wire feeding part includes a first mounting box 17 supported on the top of the top plate 14. A reel 29 is provided inside the first mounting box 17. Both ends of the reel 29 are rotatably connected to the inner wall of the first mounting box. A welding wire 19 is wound around the reel 29. A first wire outlet hole is formed in the first mounting box 17, and the welding wire 19 on the reel 29 exits through the first wire outlet hole.

[0070] The roller assembly includes a second mounting box 18, two rows of rollers 30, multiple first rotating shafts 38, multiple second rotating shafts 46, a first driving motor 39, and a second driving motor 47. The second mounting box 18 is supported on the top of the top plate 14. The top of the second mounting box 18 is open, and a cover plate 48 is movably provided at the open part. Among the two side walls of the second mounting box 18 arranged along its width direction, a wire inlet hole 40 is provided on one side wall, and a second wire outlet hole 41 is provided on the other side wall. Two rows of rollers 30 are rotatably provided inside the second mounting box 18. Each row of rollers includes multiple rollers 30 arranged at intervals along the length direction of the second mounting box 18. A wire clamping and conveying space is formed between the two rows of rollers 30. The welding wire 19 is located between the two rows of rollers 30. The two rows of rollers 30 rotate synchronously and relatively (for example, Figure 4 in the figure, the left row of rollers 30 moves clockwise, and the right row of rollers 30 rotates counterclockwise, which can convey the welding wire 19 downward ( Figure 4 downward in the figure)), and the friction force generated by the relative rotation can clamp and convey the welding wire 19, so that the welding wire 19 moves forward, that is, the welding wire 19 coming out of the first wire outlet hole passes through the wire inlet hole 40 and the wire clamping and conveying space in sequence and then moves forward under the drive of the synchronous relative rotation of the two rows of rollers 30, and thus exits through the second wire outlet hole 41.

[0071] The installation structure of the two rows of rollers 30 inside the second mounting box is as follows: A through hole 43 is provided through one side wall of the second mounting box 18 arranged along its length direction. An L-shaped plate 42 is provided inside the second mounting box 18. The L-shaped plate 42 is arranged along the length direction of the second mounting box 18. The horizontal plate body at the bottom end of the L-shaped plate 42 is slidably connected to the inner bottom wall of the second mounting box 18. A push-pull rod 44 is provided on the vertical plate body of the L-shaped plate 42. The push-pull rod 44 passes through the through hole 43 and extends outside the second mounting box 18. A support plate is fixedly provided at the extending end of the push-pull rod 44. The support plate is parallel to the side wall of the second mounting box 18 close to it. A bolt 45 is screwed on the support plate. When the bolt 45 is screwed towards the side wall of the second mounting box 18 until it abuts against the side wall of the second mounting box 18, both the bolt 45 and the L-shaped plate 42 are fixed relative to the second mounting box 18.

[0072] A plurality of first rotating shafts 38 are arranged at intervals along the length direction of the second installation box 18 inside the U-shaped plate 42. The first rotating shafts 38 are arranged vertically. The top of each first rotating shaft 38 is rotatably connected to the inner top plate of the U-shaped plate 42 (the inner top plate is the horizontal plate body of the U-shaped plate 42 at a higher position). Among the plurality of first rotating shafts 38, the bottom of one of the first rotating shafts 38 is coaxially and fixedly connected to the output shaft of the first driving motor 39. The first driving motor 39 is arranged on the inner bottom wall of the U-shaped plate 42 (the inner bottom wall is the top wall of the horizontal plate body of the U-shaped plate 42 at a lower position). Among the plurality of first rotating shafts 38, except for the two outermost first rotating shafts 38, one transmission sprocket is coaxially arranged on each of them, and two transmission sprockets are coaxially arranged on each of the middle first rotating shafts 38, so that a pair of transmission sprockets on adjacent two first rotating shafts 38 are connected by a transmission chain 35. Specifically, as Figure 6 shown, the number of the first rotating shafts 38 is three. One transmission sprocket is coaxially arranged on each of the two outermost first rotating shafts 38, and two transmission sprockets are coaxially arranged on the middle first rotating shaft 38. These two transmission sprockets correspond to the two outer transmission sprockets one by one, and the two pairs of corresponding transmission sprockets are all driven by the transmission chain 35. In this way, when the first driving motor 39 is started, the plurality of first rotating shafts 38 on the same side rotate synchronously;

[0073] A plurality of second rotating shafts 46 are arranged at intervals along the length direction of the second installation box 18 inside it. The plurality of second rotating shafts 46 are located on one side of the plurality of first rotating shafts 38. The second rotating shafts 46 are arranged vertically. The top of each second rotating shaft 46 is rotatably connected to the top of the second installation box 18. Among the plurality of second rotating shafts 46, the bottom of one of the second rotating shafts 46 is coaxially and fixedly connected to the output shaft of the second driving motor 47. The second driving motor 47 is arranged on the inner bottom wall of the second installation box 18. The plurality of second rotating shafts 46 rotate synchronously, and the synchronous rotation mode is the same as the transmission mode of the plurality of first rotating shafts 38 above. Specifically: except for the two outermost second rotating shafts 46, one transmission sprocket is coaxially arranged on each of them, and two transmission sprockets are coaxially arranged on each of the middle second rotating shafts 46, so that a pair of transmission sprockets on adjacent two second rotating shafts 46 are connected by a transmission chain 35. In this way, when the second driving motor 47 is started, the plurality of second rotating shafts 46 on the same side rotate synchronously;

[0074] The plurality of first rotating shafts 38 correspond to one row of rollers 30, and the plurality of second rotating shafts 46 correspond to another row of rollers 30. The rollers 30 are coaxially and fixedly connected to the corresponding first rotating shafts 38 / second rotating shafts 46. The sizes of the rollers 30 are all the same, and the two rows of rollers 30 are located on the same horizontal plane. In this way, by controlling the output shafts of the first driving motor 39 and the second driving motor 47 to rotate in a set direction, the two rows of rollers 30 can be driven to rotate synchronously relative to each other, thereby clamping and conveying the welding wire 19;

[0075] The guiding tube 16 is arranged on the top plate 14. The top end of the guiding tube 16 is located above the top plate 14 and close to the wire outlet end of the wire clamping and conveying space, and the other end passes through the top plate and is close to the welding end of the welding torch 15. The welding wire 19 from the wire outlet end of the wire clamping and conveying space enters the guiding tube 16 and is conveyed from the wire outlet end of the tube to the welding end of the welding torch 15 to perform the welding operation;

[0076] In this technical solution, during use, first remove the cover plate 48, place the welding wire 19 between the two rows of rollers 30, and then push the push-pull rod 44 to move the rollers 30 on the C-shaped plate 42 towards the other row of rollers 30, thereby squeezing the welding wire 19 between the two rows of rollers 30. Then screw the bolt 45 into the side wall of the second installation box 18 until it abuts against the side wall to fix the distance between the two rows of rollers 30. In this way, the welding wire 19 can be clamped between the two rows of rollers 30. Then, the welding wire 19 passes through the second wire outlet hole 41 and enters the guiding tube 16, and finally exits from the wire outlet end of the guiding tube 16. The welding wire here is close to the welding end of the welding torch 15. Then start the first driving motor 39 and the second driving motor 47 to cause the two rows of rollers 30 to rotate synchronously relative to each other, so that the welding wire 19 can be continuously fed towards the welding torch 15;

[0077] Adopting this technical solution, the beneficial effect obtained is that by providing a wire feeding part, a roller group, and the guiding tube 16, a structure of a wire feeding mechanism is provided. By driving the two rows of rollers 30 to rotate synchronously, it can cooperate with the welding torch 15 to convey the welding wire 19 for welding, with good conveying effect and simple production.

[0078] In another technical solution, the fixture includes a pair of horizontally arranged and opposite electric push rods 20 and a pair of vertically arranged clamping plates 21. The pair of electric push rods 20, the pair of clamping plates 21, and the pair of first support columns 3 correspond one by one. The fixed end of the electric push rod 20 is arranged on the corresponding first support column 3, and the corresponding clamping plate 21 is arranged on the telescopic end of the electric push rod 20. A circuit board clamping space is formed between the pair of clamping plates 21. Specifically, the pair of electric push rods 20 are horizontally arranged between the pair of first support columns 3. The fixed end of the electric push rod 20 is fixed on the side wall of the adjacent first support column 3, and a vertical plate 10 is connected to the telescopic end of the electric push rod 20. A circuit board clamping space is formed between the pair of vertical plates 10. The pair of electric push rods 20 expand and contract synchronously to clamp the circuit board with the pair of clamping plates 21. Adopting this technical solution, the beneficial effect obtained is that by providing the electric push rod 20 and the clamping plate 21, a structure of a fixture is provided, with simple and extensive materials and good effect of fixing the circuit board.

[0079] In another technical solution, a soft cushion is provided on the end wall of the hood of the cooling protective hood 27; the material of the soft cushion can be various flexible materials such as rubber, silicone, sponge, etc.; the beneficial effect obtained by adopting this technical solution is that by providing the soft cushion, the contact wear between the cooling protective hood 27 and the conveying mechanism 2 / top plate 14 can be reduced, and at the same time, it can play a sealing role, so that the cooling effect of the cooling protective hood 27 is better.

[0080] In another technical solution, the feeding mechanism is tilted; by tilting the feeding mechanism, the welding wire 19 can better cooperate with the welding gun 15 to weld the electronic components, simulating manual welding operations and improving the welding effect.

[0081] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the aviation equipment circuit board welding device of the present invention will be obvious to those skilled in the art.

[0082] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Aviation equipment circuit board welding device, characterized in that: include: A workbench, on which a conveying mechanism having a conveying direction consistent with the length direction of the workbench and a clamp for fixing the circuit board are provided. In the conveying direction, the space where the clamp is located is a welding space, and the downstream of the welding space is a cooling space; A top plate is arranged above the conveying mechanism, a welding gun is arranged at the bottom of the top plate, a welding wire feeding mechanism is arranged at the top of the top plate, and a wire feeding end of the welding wire feeding mechanism is close to the welding end of the welding gun; A lifting block, which is arranged above the top plate; A first driving mechanism, which is arranged at the bottom of the lifting block, and a driving end of the first driving mechanism is connected to the top of the top plate to drive the top plate to move along the width direction of the workbench and along the length direction of the workbench; A first lifting power member, a driving end of which is connected to the top of the lifting block to drive the lifting block to move up and down; A cooling protective cover is arranged in the cooling space, and the cooling protective cover is connected to the cooling source equipment through a hose; A second driving mechanism, a driving end of which is connected to the cooling protective cover to drive the cooling protective cover to flip; A second lifting power member, a driving end of which is connected to the second driving mechanism to drive the second driving mechanism and the cooling protective cover to rise and fall synchronously; Among them, the conveying mechanism moves the welded circuit board to the cooling space, and the second lifting power member drives the cooling protective cover to descend and the cover is arranged on the circuit board to cool the circuit board; when the welding gun is used, the second driving mechanism drives the cooling protective cover to flip over until the cover opening faces upward, and the first lifting power member drives the top plate to move up until the welding gun is located above the cooling protective cover, and then the first driving mechanism drives the top plate to move toward the cooling protective cover until the welding gun is located directly above the cooling protective cover, and then the first lifting power member drives the top plate to descend until the top plate is attached to the end wall of the cover opening of the cooling protective cover to protect the welding gun.

2. The aviation equipment circuit board welding device according to claim 1, characterized in that: It also includes a pair of first support columns and a first crossbar, wherein the pair of first support columns are arranged on both sides of the width direction of the workbench, and the first crossbar is connected between the tops of the pair of first support columns; The first lifting power member includes a first driving telescopic rod, the fixed end of the first driving telescopic rod is arranged at the bottom of the first cross bar, the telescopic end of the first driving telescopic rod is connected to the lifting block, the lifting block is arranged along the width direction of the workbench, the lifting block is hollow inside, the two ends of the lifting block are respectively slidably connected to the adjacent first support column, and the bottom of the lifting block is provided with a passage hole arranged along the width direction of the workbench; The first driving mechanism comprises a first screw, a first motor, a first slide block, a pair of vertical plates, a cross plate, a second screw, a second slide block, and a second motor, wherein the first screw is arranged along the width direction of the working table, one end of the first screw is rotatably connected to the inner side wall of the lifting block, and the other end is rotatably extended out of the lifting block, the extended end of the first screw is coaxially fixed with the output shaft of the first motor, the first slide block is screwed on the first screw and the top of the first slide block is slidably connected to the inner top wall of the lifting block, the bottom of the first slide block passes through the through hole and is connected to the cross plate, the cross plate is arranged along the length direction of the working table, a pair of vertical plates are arranged at both ends of the cross plate along the length direction of the cross plate, one end of the second screw is rotatably connected to one of the vertical plates, and the other end is rotated to extend out of the other vertical plate and is coaxially fixed to the output shaft of the second motor, the second slide block is screwed on the second screw and the top of the second slide block is slidably connected to the bottom wall of the cross plate, and the bottom of the second slide block is connected to the top plate.

3. The aviation equipment circuit board welding device according to claim 2, characterized in that: It also includes a pair of second support columns and a second cross bar, wherein the pair of second support columns are arranged on both sides of the width direction of the workbench, and the second cross bar is connected between the tops of the pair of second support columns; The second lifting power member includes a pair of second driving telescopic rods, which are respectively arranged at two ends of the bottom of the second cross bar along the width direction of the workbench, the fixed end of the second driving telescopic rod is connected to the bottom of the second cross bar, and the telescopic end is provided with a mounting block, and the cooling protective cover is arranged between the pair of mounting blocks; The second driving mechanism includes a third motor and a pair of coaxial support rods. The third motor is installed on one of the mounting blocks. The support rods are arranged horizontally. The pair of support rods are arranged on both sides of the cooling protective cover along the width direction of the workbench. One end of each support rod close to the cooling protective cover is connected to the cooling protective cover; wherein the end of the support rod close to the third motor away from the cooling protective cover is coaxially fixed to the output shaft of the third motor, and the end of the other support rod away from the cooling protective cover is rotated to pass through the corresponding mounting block.

4. The aviation equipment circuit board welding device according to claim 3, characterized in that: The welding wire feeding mechanism includes a welding wire feeding part, a roller assembly, and a guide tube. The welding wire feeding part is supported above the top plate, and the roller assembly is installed on the top plate. The roller assembly includes two rows of rollers that rotate relative to each other. The two rows of rollers clamp and convey the welding wire through the friction force generated by the relative rotation. The top end of the guide tube is close to the wire outlet end of the roller assembly, and the bottom end passes through the top plate and is close to the welding end of the welding gun. Driven by the relative rotation of the two rows of rollers, the welding wire of the welding wire feeding part passes through the two rows of rollers and the guide tube in sequence and is fed to the welding end of the welding gun.

5. The aviation equipment circuit board welding device according to claim 4, characterized in that: The clamp includes a pair of horizontally arranged and opposite electric push rods and a pair of vertically arranged clamping plates. The pair of electric push rods, the pair of clamping plates, and the pair of first support columns correspond to each other one by one. The fixed ends of the electric push rods are arranged on the corresponding first support columns, and the telescopic ends of the electric push rods are provided with corresponding clamping plates. A circuit board clamping space is formed between the pair of clamping plates.

6. The aviation equipment circuit board welding device according to claim 4, characterized in that: A soft cushion is provided on the end wall of the cooling protection cover.

7. The aviation equipment circuit board welding device according to claim 4, characterized in that: The feeding mechanism is arranged tilted.

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