High-precision welding system

Abstract

The utility model discloses a high-precision welding system, which belongs to the field of welding equipment and comprises a working table, an operating area and a welding area are arranged on the working table, a clamping tool moving between the operating area and the welding area is arranged on the working table, and a wire feeding mechanism and a welding mechanism are arranged on two sides of the welding area. A welding identification mechanism and a wire cutting mechanism are arranged above the clamping tool in the welding area; the wire feeding mechanism comprises a wire feeding frame, a wire storage roller is rotationally arranged on the wire feeding frame, a wire outlet nozzle is arranged at the position, close to the clamping tool, of the wire feeding frame, a wire pulling mechanism is arranged between the wire storage roller and the wire outlet nozzle, and a welding wire head recognition mechanism used for recognizing the position of a welding wire head is arranged on the wire outlet side of the wire outlet nozzle. The welding mechanism comprises a welding head, and the welding head is installed on a welding machine. The utility model aims to provide a high-precision welding system which can automatically finish operations such as wire feeding and welding with high precision.

Description

Technical Field

[0001] The utility model relates to the field of welding, in particular to a high-precision welding system. Background Art

[0002] In high-precision welding scenarios such as chip welding, the workpiece needs to be placed on a clamping fixture, then the clamping fixture is moved to the welding processing area, and then the workpiece is connected with welding wire, and then the welding actuator is moved to the welding point for welding. If the above work process is completely dependent on manual labor, poor accuracy may occur, which will affect the welding quality. Utility Model Content

[0003] The purpose of the utility model is to provide a high-precision welding system to solve the above problems, which can automatically and accurately complete operations such as wire feeding and welding.

[0004] To achieve the above objectives, the technical solution adopted by the utility model is a high-precision welding system, which includes a workbench, an operating area and a welding area are arranged on the workbench, a clamping tool moving between the operating area and the welding area is arranged on the workbench, a wire feeding mechanism and a welding mechanism are arranged on both sides of the welding area, and a welding identification mechanism and a wire cutting mechanism are arranged above the clamping tool in the welding area; the wire feeding mechanism includes a wire feeding frame, a wire storage roller is rotatably arranged on the wire feeding frame, a wire outlet nozzle is arranged on the wire feeding frame at the proximal end of the clamping tool, a wire pulling mechanism is arranged between the wire storage roller and the wire outlet nozzle, a wire head identification mechanism for identifying the position of the welding wire head is arranged on the wire outlet side of the wire outlet nozzle, and the wire feeding frame moves in both the horizontal and vertical directions; the welding mechanism includes a welding head, the welding head is installed on a welding machine, and the welding machine moves in both the horizontal and vertical directions.

[0005] Furthermore, a control plate is provided opposite to the welding wire head identification mechanism to prevent other structures, components, etc. from interfering with the welding wire head identification mechanism and thus affecting the identification effect.

[0006] Furthermore, in order to pull the welding wire to move, the wire pulling mechanism includes relatively arranged wire feeding rollers, one of which is arranged on the wire feeding frame and is connected to the wire feeding motor in terms of transmission, and the other is arranged on a swing rod, which is hinged on the wire feeding frame. The swing rod is used to make the wire feeding roller in close contact with the welding wire to avoid idling of the wire feeding roller and causing errors in the wire feeding length, while enabling the wire pulling mechanism to adapt to welding wires of different diameters.

[0007] Furthermore, the wire feeding frame is installed on the horizontal axis frame. The lower end of the horizontal axis frame is in sliding fit with the horizontal axis guide rail at the upper end of the vertical axis frame. A horizontal axis driving mechanism for driving the horizontal axis frame to slide is arranged on the vertical axis frame. The vertical axis frame slides on the vertical axis guide rail under the action of the vertical axis driving mechanism. The horizontal axis guide rail and the vertical axis guide rail are perpendicularly intersected in the vertical projection plane. By moving the horizontal axis frame and the vertical axis frame, the wire feeding frame can move along two directions of the horizontal axis and the vertical axis under the control of the control system.

[0008] Furthermore, since most welding wires are alloy wires and have a relatively hard hardness, in order to protect workpieces such as chips and circuit boards, it is required that the welding wire does not rub against the workpiece during movement. For this reason, the wire feeding frame moves vertically under the drive of the vertical axis driving mechanism, and the vertical axis driving mechanism is installed on the horizontal axis frame. In this way, during the wire feeding process, the wire outlet nozzle rises together with the wire feeding frame, making the welding wire higher than the welding point. When the length of the welding wire coming out of the wire outlet nozzle reaches the specified requirement, the wire feeding frame then descends, making the welding wire contact the welding point to ensure that the workpiece will not be damaged.

[0009] Furthermore, the welding machine is arranged on the vertical moving part, and the vertical moving part is driven by a vertical driving mechanism arranged on the horizontal moving seat. The horizontal moving seat moves along the horizontal guide rail, so that the welding machine can move in two directions of the horizontal axis and the vertical direction.

[0010] Furthermore, a grinding mechanism is arranged on the path of the horizontal movement of the welding machine to remove impurities, oxide layers, etc. on the welding head to ensure the welding quality.

[0011] Furthermore, the grinding mechanism includes a sand belt. The sand belt is arranged below the welding head. The sand belt winds around the supporting rollers. The supporting rollers are spaced on the machine frame. At least one supporting roller is in transmission connection with the grinding motor. The sand belt changes the contact area with the welding head as the supporting rollers rotate to ensure the grinding quality.

[0012] Furthermore, to avoid the diffusion of dust during grinding, which may affect the welding quality, a protective cover is arranged on the machine frame. The sand belt is arranged inside the protective cover. A through hole for the welding head to pass through is arranged on the protective cover. The protective cover prevents the diffusion of dust, so that this welding system can meet the dust-free welding requirements for chips, etc.

[0013] Furthermore, a suction nozzle is arranged on the machine frame. The suction end of the suction nozzle is located at the through hole. The airflow generated at the suction nozzle sucks away the dust to ensure that the dust will not diffuse.

[0014] Advantages of the present utility model: The clamping tooling is moved to the operation area, and the worker places the workpiece on the clamping tooling. Subsequently, the clamping tooling carrying the workpiece is moved to the welding area, and the welding recognition mechanism recognizes the position of the workpiece, etc.; the wire head recognition mechanism recognizes and locates the position of the wire head. After positioning, the recognition signal of the wire head recognition mechanism is sent to the control system. After the control system processes and analyzes the signal, it controls the wire feeding frame to move in two directions, the horizontal axis and the vertical axis, to ensure that the position of the wire head remains within a fixed range before each welding; subsequently, the wire pulling mechanism works to pull the wire to the welding point on the workpiece. After the wire feeding is completed, the welding head moves to the welding point for welding, thus automatically completing the high-precision wire feeding and welding work. Brief Description of the Drawings

[0015] Figure 1 It is a schematic three-dimensional structure diagram of the present utility model.

[0016] Figure 2 It is a schematic front view structure diagram of the present utility model.

[0017] Figure 3 It is a schematic three-dimensional structure diagram of the wire feeding mechanism and the clamping tooling.

[0018] Figure 4 It is a schematic front view structure diagram of the wire feeding mechanism and the clamping tooling.

[0019] Figure 5 It is a schematic three-dimensional structure diagram of the wire feeding mechanism.

[0020] Figure 6 It is Figure 5 The enlarged structure diagram at position A in

[0021] Figure 7 It is Figure 5 The structure diagram in the B direction in

[0022] Figure 8 It is Figure 5 The structure diagram in the C direction in

[0023] Figure 9 It is a schematic three-dimensional structure diagram of the welding mechanism.

[0024] Figure 10 It is Figure 9 The structure diagram in the D direction in

[0025] Figure 11 It is a schematic three-dimensional structure diagram of the frame.

[0026] The text markings shown in the figure are as follows: 1. Workbench; 2. Clamping tooling; 3. Welding recognition mechanism; 4. Wire cutting mechanism; 5. Wire feeding frame; 6. Wire storage roller; 7. Wire outlet nozzle; 8. Welding wire head recognition mechanism; 9. Welding head; 10. Welding machine; 11. Reference plate; 12. Wire feeding roller; 13. Wire feeding motor; 14. Swing rod; 15. Horizontal axis frame; 16. Vertical axis frame; 17. Horizontal axis drive mechanism; 18. Vertical axis drive mechanism; 19. Vertical axis guide rail; 20. Vertical axis drive mechanism; 21. Vertical moving part; 22. Vertical drive mechanism; 23. Horizontal moving seat; 24. Horizontal guide rail; 25. Machine frame; 26. Grinding motor; 27. Protective cover; 28. Through hole; 29. Suction nozzle; 30. Horizontal drive mechanism. Detailed implementation mode

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0028] Example 1, as Figures 1-10 shown, the structure of this embodiment is a high-precision welding system, which includes a workbench 1. An operation area and a welding area are provided on the workbench 1. A clamping tooling 2 that moves between the operation area and the welding area is provided on the workbench 1. The operation area is close to the edge of the workbench 1, and the welding area is located in the middle of the upper end of the workbench 1. A wire feeding mechanism and a welding mechanism are provided on both sides of the welding area. In the present invention, the connection line between the operation area and the welding area is longitudinal, that is, the vertical axis, and the connection line between the wire feeding mechanism and the welding mechanism is horizontal, that is, the horizontal axis. The vertical axis and the horizontal axis are perpendicular to each other in the vertical projection plane. The clamping tooling 2 moves under the drive of a linear module, a lead screw, etc. The clamping tooling includes a base, a turntable is provided at the upper end of the base, the turntable rotates along the vertical axis, and a clamping mechanism is provided at the upper end of the turntable. The clamping mechanism can adopt a clamping plate that moves downward, or a structure that can clamp workpieces in the prior art, which will not be elaborated here.

[0029] In the welding area, a welding recognition mechanism 3 and a wire cutting mechanism 4 are provided above the clamping tooling. The wire cutting mechanism 4 can adopt a cutting knife in the prior art. In this embodiment, the wire cutting mechanism 4 adopts a laser cutting device, and the laser beam generated by the laser generator of the laser cutting device is aligned with the welding position.

[0030] The wire feeding mechanism includes a wire feeding frame 5, on which a wire storage roller 6 is rotatably arranged, and a wire outlet nozzle 7 is arranged on the wire feeding frame 5 at the proximal end of the clamping tool 2, and a wire drawing mechanism is arranged between the wire storage roller 6 and the wire outlet nozzle 7, and the welding wire head extends from the wire outlet side of the wire outlet nozzle 7, and the wire outlet of the wire outlet nozzle 7 faces the welding mechanism, and a welding wire head identification mechanism 8 for identifying the position of the welding wire head and a control plate 11 opposite to the welding wire head identification mechanism 8 are arranged on the wire outlet side of the wire outlet nozzle 7, and the wire feeding frame 5 moves in both the horizontal and vertical directions.

[0031] The wire head recognition mechanism 8 and the welding recognition mechanism 3 can use laser recognition, radio frequency recognition technology, etc. In this embodiment, visual recognition technology is used. For this purpose, the wire head recognition mechanism 8 and the welding recognition mechanism 3 both include an image acquisition unit for collecting images, a light source for providing illumination, etc. The wire head recognition mechanism 8 and the welding recognition mechanism 3 are connected to a control system, and the control system includes a processing unit for receiving, processing and analyzing the detection signals of the wire head recognition mechanism 8 and the welding recognition mechanism 3, as well as a human-machine interface, etc. The control system controls the operation of the wire feeding mechanism and the welding mechanism after processing the recognition signal of the recognition mechanism. The color of the control plate 11 and the clamping fixture 2 is different from the color of the welding wire, and the more obvious the contrast, the better, so that the recognition mechanism can more clearly identify the position of the welding wire.

[0032] The wire drawing mechanism includes wire feeding rollers 12 arranged opposite to each other. In this embodiment, two wire feeding rollers 12 are arranged opposite to each other up and down, one of which is rotatably arranged on the wire feeding frame 5 and is connected to a wire feeding motor 13 through a belt or the like, and the wire feeding motor 13 is installed on the wire feeding frame 5. The other wire feeding roller 12 is arranged on a swing rod 14, and the swing rod 14 is hinged to the wire feeding frame 5 through a spring hinge. The wire feeding roller 12 on the swing rod 14 moves toward the other wire feeding roller 12 under the action of the spring hinge.

[0033] The wire feeding frame 5 is installed on the transverse axis frame 15, and the lower end of the transverse axis frame 15 is slidably matched with the transverse axis guide rail at the upper end of the longitudinal axis frame 16. The longitudinal axis frame 16 is provided with a transverse axis driving mechanism 17 for driving the transverse axis frame 15 to slide; the longitudinal axis frame 16 slides on the longitudinal axis guide rail 19 under the action of the longitudinal axis driving mechanism 18, and the transverse axis guide rail and the longitudinal axis guide rail 19 intersect vertically on the vertical projection plane. The longitudinal axis guide rail 19 is fixedly installed on the upper end of the workbench 1.

[0034] The wire feeding frame 5 moves vertically under the drive of the vertical axis driving mechanism 20 , and the vertical axis driving mechanism 20 is installed on the horizontal axis frame 15 .

[0035] The welding mechanism comprises a welding head 9, which is located at the proximal end of the wire feeding mechanism. The welding head 9 is mounted on a welding machine 10, which moves in both the horizontal and vertical directions.

[0036] The welding machine 10 is arranged on the vertical moving part 21, and a buffer mechanism is arranged between the vertical moving part 21 and the welding machine 10. The buffer mechanism can adopt a buffer pad arranged between the welding machine 10 and the vertical moving part 21, etc. In this embodiment, guide columns are arranged vertically on the vertical moving part 21, and the guide columns are inserted and matched with the welding machine 10. A limiting part is arranged at the lower end of the guide column above the welding machine 10. The buffer mechanism adopts a spring, and the spring is sleeved on the guide column, and the upper and lower ends of the spring are respectively connected to the lower end of the vertical moving part 21 and the upper end of the welding machine 10.

[0037] The vertical moving part 21 is driven by a vertical driving mechanism 22 arranged on the horizontal moving seat 23, and the horizontal moving seat 23 moves along the horizontal guide rail 24. The horizontal guide rail 24 is fixedly arranged on the workbench 1, and the horizontal moving seat 23 is driven by a horizontal driving mechanism 30 installed on the workbench 1.

[0038] The motors described above, such as the wire feeding motor 13, the grinding motor 26, and the driving mechanisms, such as the horizontal axis driving mechanism 17, the vertical axis driving mechanism 18, the vertical axis driving mechanism 20, the vertical driving mechanism 22, and the horizontal driving mechanism 30, as well as the clamping tooling 2, etc. are all execution units of the control system. The horizontal axis driving mechanism 17, the vertical axis driving mechanism 18, the vertical axis driving mechanism 20, the vertical driving mechanism 22, and the horizontal driving mechanism 30 can adopt execution modules, electric push rods, etc., or can also adopt screw rod driving in the prior art.

[0039] Specific working process: The clamping tooling 2 moves to the operation area, and the worker places the workpiece on the clamping tooling. Subsequently, the clamping tooling moves the workpiece to the welding area. The welding recognition mechanism 3 collects information such as the position of the workpiece in the welding area, and then sends the data to the control system. After analyzing the data, the control system controls the clamping tooling 2 to work to adjust the placement angle and position of the workpiece.

[0040] After the workpiece is adjusted, the wire head recognition mechanism 8 recognizes the position of the wire head. The recognition signal of the wire head recognition mechanism 8 is sent to the control system. After the control system processes and analyzes the signal, it controls the horizontal axis driving mechanism 17 and the vertical axis driving mechanism 18 to work according to the position of the wire head in the current state, so that the wire feeding frame 5 moves in two directions of the horizontal axis and the vertical axis. After the wire feeding frame 5 moves or during the movement, the wire head recognition mechanism 8 checks the position of the wire head to ensure that the position of the wire head remains in a fixed interval before each welding. After the wire head moves, when wire feeding is required, the wire feeding motor 13 works to drive the wire feeding roller 12 to rotate, so as to draw the wire on the wire storage roller 6 to move from the wire outlet nozzle 7 to the welding point. After the movement is completed, the vertical driving mechanism 22 pulls the wire feeding frame 5 downwards so that the wire contacts the welding point.

[0041] After the wire movement is completed, the lateral drive mechanism 30 drives the welding machine 10 to move towards the workpiece side, so that the welding head 9 moves above the welding point. Then, the vertical moving part 21 moves downward, and the welding machine 10 operates to perform welding. After welding is completed, the welding machine 10 retreats, the wire cutting mechanism 4 cuts off the welding wire, and the clamping tooling 2 returns to the operation area.

[0042] Embodiment 2 is as Figures 9-11 shown. The other structures and working processes of this embodiment are the same as those of Embodiment 1. However, in this embodiment, a grinding mechanism is provided on the horizontal movement path of the welding machine 10. The grinding mechanism can be a grinding wheel driven by a motor, etc. In this embodiment, the grinding mechanism includes a sand belt. The sand belt is arranged below the welding head 9. The sand belt winds around the supporting rollers. The supporting rollers are spaced on the frame 25. At least one supporting roller is in transmission connection with the grinding motor 26. The frame 25 is fixedly arranged on the workbench 1, and the frame 25 is located between the welding mechanism and the welding area. A protective cover 27 is arranged on the frame 25. The sand belt is arranged inside the protective cover 27. A through hole 28 for the welding head 9 to pass through is arranged on the protective cover 27. A suction nozzle 29 is arranged on the frame 25. The suction end of the suction nozzle 29 is located at the through hole 28. The other end of the suction nozzle 29 is connected to an air extraction device such as a suction fan.

[0043] Specific working process: The welding head 9 moves above the through hole 28, and then the welding head 9 descends to pass through the through hole 28 and contact the sand belt inside the protective cover 27. The welding head 9 moves horizontally under the drive of the lateral drive mechanism 30, so that the welding head 9 and the sand belt move relatively, thereby completing grinding. The dust generated during the grinding process enters the suction nozzle 29 along with the air flow, so that the dust will not spread into the air. After grinding is completed, the welding head 9 rises to leave the frame 25. When the contact area between the sand belt and the welding head wears more, the grinding motor 26 is turned on to drive the sand belt to move, so as to replace the contact area between the sand belt and the welding head.

[0044] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0045] In this text, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above examples is only used to help understand the method and its core idea of the present utility model. The above is only the preferred implementation mode of the present utility model. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements, retouches or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the utility model to other occasions without improvement, shall all be regarded as the protection scope of the present utility model.

Claims

1. A high-precision welding system, which comprises a workbench (1). An operation area and a welding area are arranged on the workbench (1). A clamping tooling (2) that moves between the operation area and the welding area is arranged on the workbench (1). A wire feeding mechanism and a welding mechanism are arranged on both sides of the welding area. A welding identification mechanism (3) and a wire cutting mechanism (4) are arranged above the clamping tooling (2) in the welding area. It is characterized in that, The wire feeding mechanism includes a wire feeding frame (5), on which a wire storage roller (6) is rotatably arranged. At the proximal end of the clamping tooling (2) on the wire feeding frame (5), a wire outlet nozzle (7) is arranged. A wire pulling mechanism is arranged between the wire storage roller (6) and the wire outlet nozzle (7). On the wire outlet side of the wire outlet nozzle (7), a welding wire head identification mechanism (8) for identifying the position of the welding wire head is arranged. The wire feeding frame (5) moves in two directions of the horizontal axis and the vertical axis; the welding mechanism includes a welding head (9), the welding head (9) is installed on a welding machine (10), and the welding machine moves in two directions of the horizontal axis and the vertical direction.

2. The high-precision welding system according to claim 1, wherein A reference plate (11) is arranged opposite to the welding wire head identification mechanism (8).

3. A high-precision welding system according to claim 1, characterized in that, The wire pulling mechanism includes wire feeding rollers (12) arranged oppositely, one of the wire feeding rollers (12) is arranged on the wire feeding frame (5) and is in transmission connection with a wire feeding motor (13), and the other wire feeding roller (12) is arranged on a swing rod (14), and the swing rod (14) is hinged to the wire feeding frame (5).

4. A high-precision welding system according to claim 1, characterized in that, The wire feeding frame (5) is installed on a horizontal axis frame (15), the lower end of the horizontal axis frame (15) is in sliding fit with a horizontal axis guide rail on the upper end of a vertical axis frame (16), and a horizontal axis driving mechanism (17) for driving the horizontal axis frame (15) to slide is arranged on the vertical axis frame (16); the vertical axis frame (16) slides on a vertical axis guide rail (19) under the action of a vertical axis driving mechanism (18), and the horizontal axis guide rail and the vertical axis guide rail (19) are vertically intersected in the vertical projection plane.

5. A high-precision welding system according to claim 4, characterized in that, The wire feeding frame (5) moves vertically along under the drive of a vertical axis driving mechanism (20), and the vertical axis driving mechanism (20) is installed on the horizontal axis frame (15).

6. The high-precision welding system according to claim 1, wherein The welding machine (10) is arranged on a vertical moving part (21), and the vertical moving part (21) is driven by a vertical driving mechanism (22) arranged on a horizontal moving seat (23), and the horizontal moving seat (23) moves along a horizontal guide rail (24).

7. A high-precision welding system according to claim 1, characterized in that A grinding mechanism is arranged on the path of the horizontal movement of the welding machine (10).

8. A high-precision welding system according to claim 7, characterized in that, The grinding mechanism includes a sand belt, the sand belt is arranged below the welding head (9), the sand belt winds around a supporting roller, the supporting rollers are arranged on a machine frame (25) at intervals, and at least one supporting roller is in transmission connection with a grinding motor (26).

9. A high-precision welding system according to claim 8, wherein, A protective cover (27) is arranged on the machine frame (25), the sand belt is arranged inside the protective cover (27), and a through hole (28) for the welding head (9) to pass through is arranged on the protective cover (27).

10. A high-precision welding system according to claim 9, characterized in that, A suction nozzle (29) is arranged on the machine frame (25), and the suction end of the suction nozzle (29) is located at the through hole (28).

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