Automatic chip welding system based on visual positioning

Abstract

The utility model discloses an automatic chip welding system based on visual positioning, which belongs to the field of chip processing and comprises a wire feeding mechanism and a welding mechanism which are arranged at the upper end of a workbench, and a transmission mechanism is arranged at the upper end of the workbench and between the wire feeding mechanism and the welding mechanism. The transmission mechanism is provided with a mounting seat which is driven by a rotary driving mechanism to carry out angle adjustment, and the mounting seat is provided with a clamp; a visual system and a shredding mechanism are arranged above the moving path of the mounting seat; the welding mechanism comprises a welding base, the upper end of the welding base is connected with a welding support through a welding transverse shaft driving part and a welding longitudinal shaft driving part, a welding gun seat moving in the vertical direction is arranged on the welding support, and a welding gun is installed on the welding gun seat. The utility model aims to provide an automatic chip welding system based on visual positioning, which can improve the chip welding efficiency.

Description

Technical Field

[0001] The utility model relates to the field of chip processing, in particular to an automatic chip welding system based on visual positioning. Background Art

[0002] In order to convert the collected physical, chemical or biological signals into electrical signals, such as converting temperature, pressure, gas concentration and other signals into voltage, current or resistance signals, so that these physical, chemical or biological signals can be read and processed by electronic devices such as microcontrollers; at the same time, in order to filter, amplify, transmit and store the processed signals, most sensors are equipped with chips.

[0003] In order to install the chip, a welding process is usually used to connect the chip to the circuit board, base, etc. In the existing welding process, the chip needs to be fixed on a fixture such as a clamp, and then the fixture is placed in the welding position, and the placement direction of the chip is adjusted. After the adjustment is completed, the soldering wire is used to connect the soldering points of the chip and the circuit board, and then the welding gun is moved to the soldering point for welding. If the above work process is completely dependent on manual labor, the production efficiency and qualification rate will be reduced. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a chip automatic welding system based on visual positioning, which can improve the chip welding efficiency and the qualified rate of finished products.

[0005] To achieve the above objectives, the technical solution adopted in the present application is a chip automatic welding system based on visual positioning, which includes a wire feeding mechanism and a welding mechanism arranged at the upper end of a workbench, a transmission mechanism is arranged between the wire feeding mechanism and the welding mechanism at the upper end of the workbench; a mounting seat that is driven by a rotating drive mechanism to adjust the angle is arranged on the transmission mechanism, and a clamp is arranged on the mounting seat; a visual system and a wire cutting mechanism are arranged above the moving path of the mounting seat, and the visual system is connected to a control system that controls the operation of the wire feeding mechanism, the welding mechanism, and the wire cutting mechanism; the welding mechanism includes a welding base, and the upper end of the welding base is connected to a welding bracket through a welding horizontal axis driving part and a welding longitudinal axis driving part, and a welding gun seat that moves vertically is arranged on the welding bracket, and a welding gun is installed on the welding gun seat; the wire feeding mechanism includes a wire feeding seat, and a wire winding rack and a wire pulling mechanism are arranged on the wire feeding seat. The transmission mechanism drives the fixture with the chip, base or circuit board to move to the welding place, and then the visual system identifies the positional relationship between the chip and the circuit board, etc., and sends the identification signal to the control system, which analyzes the signal. Then the control system first controls the rotary drive mechanism to drive the mounting seat to rotate to adjust the placement angle of the chip and the circuit board, etc., and then the control system controls the wire feeding mechanism to feed the welding wire so that the welding wire connects the corresponding welding points of the chip and the circuit board, etc. After the welding wire is fed, the control system controls the welding bracket to move so that the welding gun is aligned with the welding point; after alignment, the welding gun descends to complete the welding, and after the welding is completed, the wire cutting mechanism cuts the welding wire. The welding is automatically completed through the above actions to improve production efficiency.

[0006] Furthermore, in order to drive the welding bracket to move, the welding transverse axis driving part includes a transverse axis guide rail, the transverse axis guide rail is fixedly arranged, and a transverse sliding seat is slidably arranged on the transverse axis guide rail; the welding longitudinal axis driving part includes a longitudinal axis guide rail, the longitudinal axis guide rail is fixedly arranged, and a longitudinal sliding seat is slidably arranged on the longitudinal axis guide rail, and the longitudinal sliding seat or the transverse sliding seat is connected to the welding bracket; the transverse axis guide rail and the longitudinal axis guide rail are in different directions on the vertical projection plane.

[0007] Furthermore, in order to enable the welding gun to move stably vertically, a vertical mechanism is provided on the welding bracket, and the vertical mechanism includes a vertical guide rail arranged at the side end of the welding bracket, and a vertical seat is provided on the vertical guide rail. The vertical seat slides along the vertical guide rail under the action of the vertical driving mechanism, and the vertical seat is connected to the welding gun seat.

[0008] Furthermore, a pressure sensor is provided between the vertical seat and the welding gun seat, and the pressure sensor is connected to the control system. Through the pressure sensor, it is ensured that the descent height of the welding gun meets the requirements of the welding gun, while ensuring the service life of the welding gun.

[0009] Furthermore, a spring is vertically arranged between the vertical seat and the welding gun seat so that the welding gun seat can be automatically reset.

[0010] Furthermore, two groups of vertical mechanisms are provided on the welding bracket, which makes it unnecessary to adjust the position of the welding mechanism when welding the solder joints on the chip and the circuit board, thereby improving production efficiency.

[0011] Furthermore, the wire feeding seat is arranged at the upper end of the wire feeding frame, the wire feeding frame is slidably matched with the longitudinal adjustment guide rail, and the wire feeding frame is driven by the longitudinal adjustment drive mechanism to ensure that the welding wire can connect the soldering points of the chip and the circuit board.

[0012] Furthermore, a vertical adjustment drive mechanism is provided on the wire feeding frame, and an output shaft of the vertical adjustment drive mechanism is connected to the wire feeding seat to prevent the welding wire from rubbing against the circuit board, chip, etc., thereby causing damage to the welding wire, chip, etc.

[0013] Furthermore, the wire winding frame is installed on the side end of the wire feeding seat through a rotating shaft, and the welding wire is wound on the wire winding frame to facilitate the pulling of the welding wire.

[0014] Furthermore, the wire drawing mechanism includes a transmission roller group, each transmission roller group includes two transmission rollers disposed on both sides of the welding wire, and the transmission rollers are driven by a wire drawing motor to ensure the transportation of the welding wire and facilitate the control system to detect the length of the welding wire.

[0015] The beneficial effects of the present application are as follows: the fixture with the chip, base or circuit board is driven to move to the welding position by the transmission mechanism, and then the position of the chip and circuit board is identified by the visual system, and the identification signal is sent to the control system, and the control system analyzes the signal, and then the control system first controls the rotary drive mechanism to drive the mounting seat to rotate to adjust the placement angle of the chip and circuit board, and then the control system controls the wire feeding mechanism to feed the welding wire so that the welding wire is connected to the corresponding welding points of the chip and circuit board, and after the welding wire is fed, the control system controls the welding bracket to move so that the welding gun is aligned with the welding point; after alignment, the welding gun is lowered to complete the welding, and after the welding is completed, the wire cutting mechanism cuts the welding wire. The welding is automatically completed by the above actions to improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 2 It is a front structural schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the assembly structure of the utility model.

[0019] Figure 4It is a schematic diagram of the three-dimensional structure of the wire feeding mechanism from the right side.

[0020] Figure 5 It is a schematic diagram of the left-side stereoscopic structure of the wire feeding mechanism.

[0021] Figure 6 It is a schematic diagram of the side structure of the wire feeding mechanism.

[0022] Figure 7 It is a schematic diagram of the front view of the welding mechanism.

[0023] Figure 8 It is a schematic diagram of the left-side stereoscopic structure of the welding mechanism.

[0024] Fig. 9 It is a schematic diagram of the three-dimensional structure of the welding mechanism from the right side.

[0025] Fig.10 It is a schematic diagram of the three-dimensional structure of the welding mechanism explosion.

[0026] The text labels in the figure are as follows: 1. workbench; 2. wire feeding mechanism; 201. wire feeding seat; 202. wire winding frame; 203. wire feeding frame; 204. longitudinal adjustment guide rail; 205. longitudinal adjustment drive mechanism; 206. vertical adjustment drive mechanism; 207. transmission roller; 208. wire drawing motor; 3. welding mechanism; 301. welding base; 302. welding bracket; 303. welding gun seat; 304. welding gun; 305. horizontal axis guide rail; 306, transverse sliding seat; 307, transverse base; 308, transverse driving mechanism; 309, longitudinal axis guide rail; 310, longitudinal sliding seat; 311, longitudinal driving mechanism; 312, vertical guide rail; 313, vertical seat; 314, vertical driving mechanism; 315, pressure sensor; 316, spring; 4, transmission mechanism; 5, rotation driving mechanism; 6, mounting seat; 7, fixture; 8, visual system; 9, wire cutting mechanism; 10, support. DETAILED DESCRIPTION

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

[0028] Embodiment 1, as Figure 1-10As shown, the structure of this embodiment is: a chip automatic welding system based on visual positioning, which includes a wire feeding mechanism 2 and a welding mechanism 3 arranged at the upper end of a workbench 1, the workbench 1 is installed in a frame, and a transmission mechanism 4 is arranged on the upper end of the workbench 1 between the wire feeding mechanism 2 and the welding mechanism 3. For the convenience of description, in this embodiment, the length direction of the workbench 1 is taken as the horizontal axis, and the width direction of the workbench 1 is taken as the vertical axis; a mounting seat 6 which is driven by a rotating drive mechanism 5 for angle adjustment is arranged on the transmission mechanism 4, the rotating drive mechanism 5 can adopt an electric turntable, a hydraulic turntable, etc., the transmission mechanism 4 can adopt a linear module, a screw driven by a motor, etc., a clamp 7 is arranged on the mounting seat 6, and the mounting seat 6 can adopt an electromagnet, a vacuum suction cup, etc.

[0029] A visual system 8 and a wire cutting mechanism 9 are arranged above the moving path of the mounting seat 6; the visual system 8 includes a camera for image acquisition, a lamp for lighting, etc., and the wire cutting mechanism 9 can adopt a cutting knife, etc. In this embodiment, the wire cutting mechanism 9 adopts a laser cutting device, and the laser cutting device includes a laser generator. The laser beam generated by the laser generator is aimed at the welding position. The visual system 8 and the wire cutting mechanism 9 are installed on the support 10. The visual system 8 is connected to a control system that controls the operation of the wire feeding mechanism 2, the welding mechanism 3, and the wire cutting mechanism 9. The control system includes a single-chip microcomputer, a processor, etc. for signal processing, a storage unit for signal storage, etc., an input unit and a display, etc. for command input.

[0030] The welding mechanism 3 includes a welding base 301 , the upper end of which is connected to a welding bracket 302 via a welding transverse axis driving unit and a welding longitudinal axis driving unit. A welding gun seat 303 that moves vertically is provided on the welding bracket 302 , and a welding gun 304 is installed on the welding gun seat 303 . The welding transverse axis driving part described in this embodiment includes a transverse axis guide rail 305, which is fixedly arranged at the upper end of the welding base 301, and a transverse sliding seat 306 is slidably arranged on the transverse axis guide rail 305, and the transverse sliding seat 306 is fixedly arranged at the lower end of the transverse base 307. The transverse base 307 moves along the transverse axis guide rail 305 under the action of the transverse driving mechanism 308; the welding longitudinal axis driving part includes a longitudinal axis guide rail 309, which is arranged at the upper end of the transverse base 307, and a longitudinal sliding seat 310 is slidably arranged on the longitudinal axis guide rail 309, and the longitudinal sliding seat 310 is connected to the welding bracket 302, and the welding bracket 302 moves along the longitudinal axis guide rail 309 under the action of the longitudinal driving mechanism 311; the transverse axis guide rail 305 and the longitudinal axis guide rail 309 intersect vertically on the vertical projection plane.

[0031] The welding bracket 302 is provided with a vertical mechanism. Since the chip and the circuit board need to be connected by welding wire, there are solder joints on the chip and the circuit board. In order to weld both solder joints, two groups of vertical mechanisms are provided on the welding bracket 302. The vertical mechanism includes a vertical guide rail 312 arranged at the side end of the welding bracket 302. A vertical seat 313 is provided on the vertical guide rail 312. The vertical seat 313 slides along the vertical guide rail 312 under the action of the vertical driving mechanism 314. The vertical seat 313 is connected to the welding gun seat 303. The vertical drive mechanism 314, the longitudinal drive mechanism 311, the transverse drive mechanism 308, the longitudinal adjustment drive mechanism 205 and the vertical adjustment drive mechanism 206 can adopt electric push rods, cylinders and linear modules, etc., and proximity switches, gratings, magnetic gratings and other detection units for detecting the moving position can be set on the moving path side of the transverse sliding seat 306 and the longitudinal sliding seat 310. The detection unit is connected to the control system to send the position coordinates of the moving mechanisms such as the transverse sliding seat 306 and the longitudinal sliding seat 310 to the control system, so as to facilitate the control system to control the movement of the welding mechanism 3, the wire feeding mechanism 2, etc.

[0032] A pressure sensor 315 is vertically arranged on the vertical seat 313, and the pressure sensor 315 is connected to the control system. The pressure sensor 315 extends through the vertical seat 313 toward the welding gun seat 303. The sensing area of ​​the pressure sensor 315 under normal conditions does not contact the upper end of the welding gun seat 303. A spring 316 is vertically arranged between the vertical seat 313 and the welding gun seat 303, and the spring 316 is sleeved on the pressure sensor 315.

[0033] The wire feeding mechanism 2 includes a wire feeding seat 201, and a wire winding frame 202 and a wire drawing mechanism are arranged on the wire feeding seat 201. The wire feeding seat 201 is arranged at the upper end of the wire feeding frame 203, and the wire feeding frame 203 is slidably matched with the longitudinal adjustment guide rail 204, and the wire feeding frame 203 is driven by the longitudinal adjustment driving mechanism 205. A vertical adjustment driving mechanism 206 is arranged on the wire feeding frame 203, and the output shaft of the vertical adjustment driving mechanism 206 is connected to the wire feeding seat 201. The wire winding frame 202 is installed on the side end of the wire feeding seat 201 through a rotating shaft. The wire drawing mechanism includes a transmission roller group, and a plurality of transmission roller groups are arranged in a transverse arrangement, and each transmission roller group includes two transmission rollers 207 respectively arranged on both sides of the welding wire, and the transmission roller 207 is driven by a wire drawing motor 208, and the transmission roller group and the wire feeding frame 203 are arranged on the same side.

[0034] Specific working process: the staff first places the chip and the circuit board on the clamp 7, and then places the clamp 7 on the mounting seat 6. The mounting seat 6 fixes the clamp 7, and then the transmission mechanism 4 moves the mounting seat 6 together with the clamp 7 to the welding point in the longitudinal direction.

[0035] After the mounting seat 6 is moved, the visual system 8 collects the position and image data of the chip and circuit board, and then sends the data to the control system. The control system analyzes the data and controls the rotation drive mechanism 5 to rotate the mounting seat 6 along the vertical axis to ensure the placement angle of the chip and circuit board.

[0036] At the same time, the control system analyzes the position coordinates of the chip and the circuit board, and then the control system controls the longitudinal adjustment drive mechanism 205 in the wire feeding mechanism 2 to work to adjust the position aligned with the wire drawing mechanism. After the adjustment is completed, the transmission roller 207 rotates to convey the front end of the welding wire to the chip side, so that the welding wire moves to the welding point of the chip and the circuit board. The moving distance of the welding wire can be calculated according to the speed and working time of the wire drawing motor 208, and the position relationship between the welding wire and the welding point is collected through the visual system 8. After the welding wire is moved, the vertical adjustment drive mechanism 206 drives the wire feeding seat to descend so that the welding wire contacts the welding point.

[0037] After or during the welding wire movement, the control system drives the horizontal drive mechanism 308 and the longitudinal drive mechanism 311 to work so that the welding gun 304 is aligned with the welding point. When the welding gun 304 and the welding wire are moved, the vertical drive mechanism 314 drives the two welding guns 304 to descend in sequence to weld the welding points on the circuit board and the chip respectively. After welding is completed, the wire cutting mechanism 9 cuts the welding wire.

[0038] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0039] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A chip automatic welding system based on visual positioning, comprising a wire feeding mechanism (2) and a welding mechanism (3) arranged on the upper end of a workbench (1), wherein a transmission mechanism (4) is arranged on the upper end of the workbench (1) between the wire feeding mechanism (2) and the welding mechanism (3); characterized in that: The transmission mechanism (4) is provided with a mounting seat (6) which is driven by a rotating drive mechanism (5) to adjust the angle, and the mounting seat (6) is provided with a clamp (7); a visual system (8) and a wire cutting mechanism (9) are provided above the moving path of the mounting seat (6), and the visual system (8) is connected to a control system for controlling the operation of the wire feeding mechanism (2), the welding mechanism (3), and the wire cutting mechanism (9); the welding mechanism (3) comprises a welding base (301), the upper end of the welding base (301) is connected to a welding bracket (302) via a welding transverse axis driving unit and a welding longitudinal axis driving unit, the welding bracket (302) is provided with a welding gun seat (303) which moves vertically, and a welding gun (304) is installed on the welding gun seat (303); the wire feeding mechanism (2) comprises a wire feeding seat (201), and a wire winding frame (202) and a wire pulling mechanism are provided on the wire feeding seat (201).

2. According to the vision positioning based chip automatic welding system of claim 1, it is characterized in that: The welding transverse axis driving part comprises a transverse axis guide rail (305), the transverse axis guide rail (305) is fixedly arranged, and a transverse sliding seat (306) is slidably arranged on the transverse axis guide rail (305); the welding longitudinal axis driving part comprises a longitudinal axis guide rail (309), the longitudinal axis guide rail (309) is fixedly arranged, and a longitudinal sliding seat (310) is slidably arranged on the longitudinal axis guide rail (309), and the longitudinal sliding seat (310) or the transverse sliding seat (306) is connected to the welding bracket (302); the transverse axis guide rail (305) and the longitudinal axis guide rail (309) are in different directions on the vertical projection plane.

3. According to the vision positioning based chip automatic welding system of claim 1, it is characterized in that: The welding bracket (302) is provided with a vertical mechanism, the vertical mechanism comprising a vertical guide rail (312) provided at a side end of the welding bracket (302), the vertical guide rail (312) being provided with a vertical seat (313), the vertical seat (313) sliding along the vertical guide rail (312) under the action of a vertical drive mechanism (314), the vertical seat (313) being connected to a welding gun seat (303).

4. The chip automatic welding system based on visual positioning according to claim 3 is characterized in that: A pressure sensor (315) is provided between the vertical seat (313) and the welding gun seat (303), and the pressure sensor (315) is connected to a control system.

5. The chip automatic welding system based on visual positioning according to claim 4 is characterized in that: A spring (316) is vertically arranged between the vertical seat (313) and the welding gun seat (303).

6. The chip automatic welding system based on visual positioning according to claim 3 is characterized in that: Two groups of vertical mechanisms are arranged on the welding bracket (302).

7. The chip automatic welding system based on visual positioning according to claim 1 is characterized in that: The wire feeding seat (201) is arranged at the upper end of the wire feeding frame (203); the wire feeding frame (203) is slidably matched with the longitudinal adjustment guide rail (204); and the wire feeding frame (203) is driven by a longitudinal adjustment driving mechanism (205).

8. The chip automatic welding system based on visual positioning according to claim 7 is characterized in that: The wire feeding frame (203) is provided with a vertical adjustment drive mechanism (206), and an output shaft of the vertical adjustment drive mechanism (206) is connected to the wire feeding seat (201).

9. The chip automatic welding system based on visual positioning according to claim 1 is characterized in that: The wire winding frame (202) is mounted on the side end of the wire feeding seat (201) via a rotating shaft.

10. The chip automatic welding system based on visual positioning according to claim 1, characterized in that: The wire drawing mechanism comprises a transmission roller group, each transmission roller group comprises two transmission rollers (207) disposed on both sides of the welding wire, and the transmission rollers (207) are driven by a wire drawing motor (208).

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