CN118180626A - Welding equipment and welding method for mobile phone middle frame horizontal gold-plated sheet - Google Patents

Abstract

The invention relates to a welding device for a mobile phone middle frame horizontal gold-plating sheet, which comprises: the mobile phone middle frame is conveyed to the position below the laser welding device by the middle frame transfer assembly; the laser welding device comprises a laser Y-axis moving assembly, a laser X-axis moving assembly, a laser Z-axis moving assembly and a laser welding assembly, wherein the laser X-axis moving assembly is arranged at the moving end of the laser Y-axis moving assembly, and the laser Z-axis moving assembly is arranged at the moving end of the laser X-axis moving assembly. The moving component of the welding equipment can provide high-precision position control so as to ensure the accuracy and repeatability of the welding process, and meanwhile, the welding equipment is compact in structure and small in occupied space.

Description

Welding equipment and welding method for mobile phone middle frame horizontal gold-plated sheet

Technical Field

The invention relates to the technical field of welding equipment, in particular to welding equipment and a welding method for a mobile phone middle frame horizontal gold-plated sheet.

Background

In modern manufacturing, handset manufacturing is a fairly important and rapidly evolving field. With the continuous progress of technology and design, mobile phone components are becoming more complex and sophisticated, which places higher demands on the manufacturing and assembly process of the mobile phone components. Particularly, in the process of assembling the mobile phone, the accurate welding of the middle frame and the gold-plated sheet is one of key links for ensuring the quality and the performance of the mobile phone.

For welding equipment, reducing space usage is critical to increasing production line flexibility and reducing equipment costs. At the same time, the moving parts of the apparatus should be able to provide high precision position control to ensure accuracy and repeatability of the welding process. However, conventional welding techniques face a number of challenges, including large space occupation, inaccurate welding, and the like.

Disclosure of Invention

The invention aims to provide a welding device and a welding method for a mobile phone middle frame horizontal gold-plated sheet, so as to solve the problems.

To achieve the purpose, the invention adopts the following technical scheme:

in one aspect, the present application provides a welding apparatus for a mobile phone middle frame horizontal gold plating sheet, comprising: the mobile phone middle frame is conveyed to the position below the laser welding device by the middle frame transfer assembly;

the laser welding device comprises a laser Y-axis moving assembly, a laser X-axis moving assembly, a laser Z-axis moving assembly and a laser welding assembly, wherein the laser X-axis moving assembly is arranged at the moving end of the laser Y-axis moving assembly, and the laser Z-axis moving assembly is arranged at the moving end of the laser X-axis moving assembly;

The laser welding assembly comprises a laser light source assembly arranged on the moving end of the laser Z-axis moving assembly, a prism assembly is arranged at the outlet of the laser light source assembly, a laser head is further arranged on one side of the prism assembly along the Y-axis direction, a light source inlet of the laser head faces the prism assembly, and a light source outlet of the laser head is used for emitting laser;

The laser head is at least partially overlapped with the laser X-axis moving assembly in the X-axis direction.

Optionally, one end of the laser X-axis moving component is disposed on one side of the laser Y-axis moving component, the other end of the laser X-axis moving component is disposed on the other side of the laser Y-axis moving component, and the laser welding component is disposed on one side of the laser Y-axis moving component.

Optionally, the laser Z-axis moving component is capable of moving between a first position and a second position along the X-axis direction by the laser X-axis moving component, where the first position and the second position are both disposed on one side of the laser Y-axis moving component;

and the distance from the laser Z-axis moving assembly to the laser Y-axis moving assembly is smaller than the distance from the other end of the laser X-axis moving assembly to the laser Y-axis moving assembly along the X-axis direction.

Optionally, a positioning jig and a gold-plated sheet transferring assembly are further arranged on the workbench;

The positioning jig is provided with a plurality of positioning grooves for accommodating gold-plated sheets, and the positions of the positioning grooves are in one-to-one correspondence with preset welding positions on the mobile phone middle frame;

a feeding assembly is arranged on one side of the workbench and used for carrying the gold-plated sheet into the positioning groove; the middle frame transfer assembly is arranged on the other side of the workbench;

The gold-plated sheet transferring assembly is used for carrying gold-plated sheets in the positioning groove to a preset welding position on the middle frame of the mobile phone, and comprises a plurality of suction nozzle assemblies, and the positions of the suction nozzle assemblies are in one-to-one correspondence with the positions of the positioning groove.

Optionally, the positioning jig includes setting up the location platform on the workstation, be equipped with the base plate on the location platform, follow each limit of base plate is equipped with the fly leaf, the fly leaf with the base plate cooperation forms the constant head tank, just the fly leaf can follow the horizontal direction relatively the base plate removes in order to change the size of constant head tank, the minimum size of constant head tank is unanimous with the size of gilding piece.

Optionally, the middle frame shifts the subassembly and includes the second X axle that sets up along X axle direction and remove the subassembly, the output that the second X axle removed the subassembly is equipped with the middle frame and shifts the support, be equipped with the sucking disc that is used for fixed cell-phone middle frame on the middle frame shifts the support, be equipped with the second vacuum air flue in the sucking disc, the one end of second vacuum air flue passes through vacuum filter intercommunication vacuum generator, the other end extends to the upper surface of sucking disc is in order to adsorb the cell-phone middle frame.

Optionally, along the X-axis direction, the positioning fixture is disposed on one side of the workbench, and the middle frame transfer assembly is disposed on the other side of the workbench;

Along Y axle direction, be equipped with two base plates side by side on the location platform, be equipped with two on the center transfer support side by side the sucking disc center transfer assembly's bilateral symmetry is provided with two sets of gilt piece transfer assembly.

Optionally, the gold-plated sheet transferring assembly comprises a first X-axis moving assembly arranged on the workbench, a first Z-axis moving assembly is arranged at the output end of the first X-axis moving assembly, a gold-plated sheet transferring bracket is arranged at the output end of the first Z-axis moving assembly, and an avoidance through groove is formed in the middle of the gold-plated sheet transferring bracket;

The gold-plated sheet transferring support is provided with a plurality of connecting grooves along the directions of all sides respectively, and one end of the suction nozzle assembly is fixed at the preset position of the connecting grooves.

Optionally, the suction nozzle assembly includes a support arm fixed at a preset position of the connecting slot, one side of the support arm is slidably connected with a sliding member, a sliding direction of the sliding member is parallel to a Z-axis direction, a suction nozzle head is fixed on the sliding member, and positions of the suction nozzle head and positions of the positioning slot are in one-to-one correspondence;

the support arm is also fixedly provided with a piston rod, the axial direction of the piston rod is parallel to the Z-axis direction, the tail end of the suction nozzle head is provided with a slide way, and the piston rod extends into the slide way to be in sliding connection with the suction nozzle head.

Optionally, a camera component and a thermal imaging sensing component are arranged on one side of the laser head, the camera component is used for shooting image information on the mobile phone middle frame, and the thermal imaging sensing component is used for detecting heat information of the mobile phone middle frame;

The camera component and the thermal imaging sensing component are respectively connected with a control system, and the control system is used for controlling the operation of the laser Y-axis moving component, the laser X-axis moving component, the laser Z-axis moving component and the laser light source component according to the image information and the heat information.

On the other hand, the application provides a welding method of a mobile phone middle frame horizontal gold-plating sheet, which is applied to the welding equipment of the mobile phone middle frame horizontal gold-plating sheet, and comprises the following steps:

s1: sequentially placing a plurality of gold-plated sheets into each positioning groove on a positioning jig through a feeding assembly, and simultaneously conveying a mobile phone middle frame to be welded to the lower part of a laser welding device through a middle frame transferring assembly;

S2: the gold-plated sheets in each positioning groove are sucked in batches through the gold-plated sheet transferring assembly, and the gold-plated sheets are transported to a preset welding position on the middle frame of the mobile phone in batches;

S3: starting a laser welding device, and moving a laser head through a laser Y-axis moving assembly, a laser X-axis moving assembly and a laser Z-axis moving assembly so as to enable a laser beam to be aligned to a preset welding position on a mobile phone middle frame;

S4: in the welding process, the image information and the heat information of the middle frame of the mobile phone are respectively obtained in real time through the camera component and the thermal imaging sensing component, the control system obtains real-time welding quality feedback through data processing and analysis of the image information and the heat information, and the position of the laser head and the power of the laser source component are controlled according to the welding quality feedback so as to optimize the welding path and the welding quality;

s5: after the welding is finished, the middle frame transferring assembly moves the welded middle frame of the mobile phone back to the initial position, and the welded middle frame of the mobile phone is replaced by the middle frame of the mobile phone to be welded through the manipulator so as to carry out the welding process of the next round.

Optionally, the control system obtains real-time welding quality feedback through data processing and analysis of the image information and the heat information, and specifically includes:

s41: the control system acquires initial image information of a mobile phone middle frame and a horizontal gold-plated sheet through a camera component;

S42: extracting geometric data of a welding path from the initial image information by adopting an image processing algorithm of edge detection and feature recognition to form welding path planning information;

S43: the control system performs data processing and analysis on the image information and the heat information obtained in real time so as to evaluate welding quality and obtain real-time welding quality feedback; the image information comprises welding spot brightness and welding seam morphology, and the heat information comprises a temperature distribution map of a welding area;

S44: according to the real-time welding quality feedback, the control system judges whether the welding track needs to be corrected, if not, the welding path planning information is continuously executed; if yes, the welding path planning information is corrected, and the corrected welding path planning information is executed.

Compared with the prior art, the invention has the following beneficial effects:

the laser head can be precisely positioned and welded in space through the design of three-dimensional movement of the laser X-axis moving assembly, the laser Y-axis moving assembly and the laser Z-axis moving assembly, so that the requirement on high-precision welding is met; the prism assembly and the laser head are introduced into the laser welding assembly, so that the laser source can precisely emit the laser source after the path of the laser source is adjusted through the prism assembly, and the control precision of the laser beam is further improved. The laser head is at least partially overlapped with the laser X-axis moving assembly in the X-axis direction, so that the laser emission position can be easily finely adjusted through X-axis adjustment, and the welding precision is further improved.

The laser light source component and the prism component are arranged along the Z-axis direction, and the outermost edge of the laser Z-axis moving component is not exceeded on the X-axis. The vertical layout design fully utilizes the vertical space of the equipment, so that the whole occupied area of the equipment is small, and the extra space required above and on two sides of the equipment is reduced. The overall compact design reduces the burden on moving parts, thereby reducing equipment vibration and loss and improving overall stability and operational reliability of the system.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and are not intended to limit the scope of the invention, since any modification, variation in proportions, or adjustment of the size, etc. of the structures, proportions, etc. should be considered as falling within the spirit and scope of the invention, without affecting the effect or achievement of the objective.

FIG. 1 is a schematic view of a welding apparatus according to a first embodiment;

FIG. 2 is a schematic view of a welding apparatus according to another embodiment;

FIG. 3 is a schematic view of a laser welding apparatus according to the first embodiment;

FIG. 4 is a schematic diagram of a positioning fixture, a gold plating transfer assembly and a middle frame transfer assembly according to the first embodiment;

FIG. 5 is a schematic diagram of a positioning fixture according to the first embodiment;

FIG. 6 is a schematic diagram showing a structure of a gold plating transfer member according to the first embodiment;

FIG. 7 is a schematic view of a suction nozzle assembly according to the first embodiment;

Fig. 8 is a schematic structural diagram of a middle frame transfer assembly according to the first embodiment.

Reference numerals illustrate: 10. a work table; 20. a feeding assembly; 21. a flying device; 22. a four-axis robot;

30. positioning jig; 300. a positioning groove; 31. positioning a platform; 32. a substrate; 33. a movable plate;

40. A gold plating sheet transfer assembly; 41. a first X-axis moving assembly; 42. a first Z-axis movement assembly; 43. a gold plating sheet transfer holder; 430. avoiding the through groove; 431. a connecting groove; 44. a suction nozzle assembly; 441. a support arm; 442. a slider; 443. a suction nozzle head; 444. a piston rod;

50. A middle frame transfer assembly; 51. a second X-axis moving assembly; 52. a middle frame transfer bracket; 53. a suction cup;

60. A laser welding device; 61. a laser Y-axis moving assembly; 62. a laser X-axis moving assembly; 63. a laser Z-axis moving assembly; 64. a laser welding assembly; 641. a laser light source assembly; 642. a prism assembly; 643. and (3) a laser head.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. It is noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

Embodiment one:

referring to fig. 1 to 8, the welding apparatus for a mobile phone center horizontal gold plating sheet disclosed in this embodiment includes: a workbench 10, a middle frame transfer assembly 50 and a laser welding device 60 which are arranged on the workbench 10, wherein the middle frame transfer assembly 50 is used for conveying a mobile phone middle frame to the lower part of the laser welding device 60;

The laser welding device 60 comprises a support frame arranged on the workbench 10, a laser Y-axis moving assembly 61, a laser X-axis moving assembly 62, a laser Z-axis moving assembly 63 and a laser welding assembly 64, wherein one end of the laser X-axis moving assembly 62 is arranged on the moving end of the laser Y-axis moving assembly 61, and the laser Z-axis moving assembly 63 is arranged on the moving end of the laser X-axis moving assembly 62;

The laser welding assembly 64 comprises a laser light source assembly 641 which is positioned at the other end of the laser X-axis moving assembly 62 and is arranged on the moving end of the laser Z-axis moving assembly 63, a prism assembly 642 is arranged at the outlet of the laser light source assembly 641, a laser head 643 is further arranged on one side of the prism assembly 642 along the Y-axis direction, a light source inlet of the laser head 643 is arranged towards the prism assembly 642, and a light source outlet of the laser head 643 is used for emitting laser;

the laser light source assembly 641 and the prism assembly 642 are disposed along the Z-axis direction, and do not protrude from the outermost edge of the laser Z-axis moving assembly 63 in the X-axis direction, and the laser head 643 is at least partially overlapped with the laser X-axis moving assembly 62 in the X-axis direction.

Through the design of three-dimensional movement of the laser X-axis moving assembly 62, the laser Y-axis moving assembly 61 and the laser Z-axis moving assembly 63, accurate positioning and welding of the laser head 643 in space can be realized, so that the requirement on high-precision welding is met; the prism assembly 642 and the laser head 643 introduced in the laser welding assembly 64 are designed, so that a laser source can precisely emit the laser source after the path of the laser source is adjusted through the prism assembly 642, and the control precision of the laser beam is further improved; the laser head 643 is at least partially overlapped with the laser X-axis moving assembly 62 in the X-axis direction, so that the laser emitting position can be easily fine-tuned by adjusting the X-axis, and the welding precision is further improved.

The laser light source assembly 641 and the prism assembly 642 are disposed in the Z-axis direction and do not go beyond the outermost edge of the laser Z-axis moving assembly 63 in the X-axis. The vertical layout design fully utilizes the vertical space of the equipment, so that the whole occupied area of the equipment is small, and the extra space required above and on two sides of the equipment is reduced. The overall compact design reduces the burden on moving parts, thereby reducing equipment vibration and loss and improving overall stability and operational reliability of the system.

Further, one end of the laser X-axis moving assembly 62 is disposed at one side of the laser Y-axis moving assembly 61, the other end of the laser X-axis moving assembly 62 is disposed at the other side of the laser Y-axis moving assembly 61, and the laser welding assembly 64 is disposed at one side of the laser Y-axis moving assembly 61. This arrangement may provide better support for the laser X-axis moving assembly 62, which may allow the laser X-axis moving assembly 62 to be more stable during movement, reducing vibration or misalignment due to improper suspension, and thus may allow for more accurate welding operations.

Further, the laser Z-axis moving component 63 can move between a first position and a second position along the X-axis direction by the laser X-axis moving component 62, wherein the first position and the second position are both disposed at one side of the laser Y-axis moving component 61; the distance from the laser Z-axis moving assembly 63 to the laser Y-axis moving assembly 61 is smaller than the distance from the other end of the laser X-axis moving assembly 62 to the laser Y-axis moving assembly 61 in the X-axis direction. This helps to maintain balance throughout the laser welding apparatus 60 and avoids tilting or imbalance due to uneven weight distribution.

In this embodiment, the laser Y-axis moving assembly 61, the laser X-axis moving assembly 62 and the laser Z-axis moving assembly 63 all realize their functions by the combination of the lead screw motor, the photoelectric switch and the sensing piece, so as to realize the high-precision positioning and the rapid movement of the laser welding assembly 64. In another embodiment, a stepper motor or servo motor in combination with a gear or belt may be used in place of the lead screw motor.

Referring to fig. 2, the table 10 is further provided with a positioning jig 30 and a gold plating sheet transfer member 40; the positioning jig 30 is provided with a plurality of positioning grooves 300 for accommodating gold-plated sheets, and the positions of the positioning grooves 300 are in one-to-one correspondence with the preset welding positions on the mobile phone middle frame;

One side of the workbench 10 is provided with a feeding assembly 20, the feeding assembly 20 comprises a flying head 21 and a four-axis robot 22, and the gold plating sheet is conveyed into the positioning groove 300 through the flying head 21 and the four-axis robot 22; the middle frame transfer unit 50 is provided at the other side of the table 10;

the gold plating transfer assembly 40 is used for carrying the gold plating in the positioning slot 300 to a preset welding position on the mobile phone middle frame, the gold plating transfer assembly 40 comprises a plurality of suction nozzle assemblies 44, and the positions of the suction nozzle assemblies 44 are in one-to-one correspondence with the positions of the positioning slot 300.

The feeding assembly 20 extracts gold plating pieces from the batch feed and accurately places the gold plating pieces in the positioning groove 300 of the positioning jig 30; meanwhile, the middle frame transferring assembly 50 conveys the middle frame of the mobile phone to the lower part of the laser welding device 60; the plurality of suction nozzle assemblies 44 of the gold-plated sheet transferring assembly 40 take out all the gold-plated sheets in the plurality of positioning slots 300 at the same time and convey the gold-plated sheets to a preset welding position on the middle frame of the mobile phone according to a preset program; then starting a laser welding device 60, and executing a preset welding program by the laser welding device 60 to finish welding the gold-plated sheet to the middle frame of the mobile phone; after the welding of one mobile phone middle frame is completed, the welded mobile phone middle frame is removed by the middle frame transferring assembly 50, the welded mobile phone middle frame is replaced by the mobile phone middle frame to be welded through the manipulator, and the next round of welding is performed. The welding equipment realizes automatic precise welding of the gold-plated sheet and the mobile phone middle frame through integrating a plurality of components such as the feeding component 20, the positioning jig 30, the gold-plated sheet transferring component 40, the middle frame transferring component 50, the laser welding device 60 and the like, greatly improves the production efficiency and the welding precision, reduces the manual operation by the automatic design of the whole system, reduces the production cost, and improves the consistency and the reliability of products by precise control.

Referring to fig. 5, the positioning jig 30 includes a positioning platform 31 disposed on the workbench 10, a substrate 32 is disposed on the positioning platform 31, a movable plate 33 is disposed along each side of the substrate 32, the movable plate 33 cooperates with the substrate 32 to form a positioning slot 300, and the movable plate 33 can move horizontally relative to the substrate 32 to change the size of the positioning slot 300, and the minimum size of the positioning slot 300 is consistent with the size of the gold plating sheet.

The size of the positioning groove 300 is changed by moving the movable plate 33, which has two functions: firstly, through innovative design of the movable plate 33, the positioning groove 300 can adapt to gold plating pieces with different sizes, so that the flexibility and the universality of the positioning jig 30 are remarkably improved, and the production cost is reduced; secondly, each movable plate 33 can be driven to move away from the base plate 32 along the horizontal direction so as to increase the size of the positioning groove 300, so that the feeding assembly 20 is convenient for placing the gold plating sheet in the positioning groove 300, the requirement on the feeding accuracy of the feeding assembly 20 is reduced, after the gold plating sheet is placed in the positioning groove 300 by the feeding assembly 20, each movable plate 33 is driven to move close to the base plate 32 along the horizontal direction so as to restore the size of the positioning groove 300, and further the secondary accurate positioning of the gold plating sheet is realized.

Referring to fig. 8, the middle frame transferring assembly 50 includes a second X-axis moving assembly 51 disposed along the X-axis direction, a middle frame transferring bracket 52 is disposed at an output end of the second X-axis moving assembly 51, a suction cup 53 for fixing a middle frame of the mobile phone is disposed on the middle frame transferring bracket 52, a second vacuum air channel is disposed in the suction cup 53, one end of the second vacuum air channel is communicated with the vacuum generator through a vacuum filter, and the other end extends to an upper surface of the suction cup 53 to adsorb the middle frame of the mobile phone.

In this embodiment, the second X-axis moving assembly 51 realizes its function by the screw motor cooperating with the photoelectric switch and the sensing piece, thereby realizing high-precision positioning and rapid movement of the mobile phone middle frame in the X-axis direction.

Referring to fig. 4, further, in the X-axis direction, the positioning jig 30 is disposed at one side of the table 10, and the middle frame transfer assembly 50 is disposed at the other side of the table 10; along the Y-axis direction, two substrates 32 are arranged on the positioning platform 31 side by side, two suckers 53 are arranged on the middle frame transfer support 52 side by side, and two groups of gold plating sheet transfer assemblies 40 are symmetrically arranged on two sides of the middle frame transfer assembly 50. The integrated level of the whole welding equipment is greatly improved, and the occupied space of the welding equipment is reduced.

Referring to fig. 6, the gold-plating transfer assembly 40 includes a first X-axis moving assembly 41 disposed on the workbench 10, wherein an output end of the first X-axis moving assembly 41 is provided with a first Z-axis moving assembly 42, an output end of the first Z-axis moving assembly 42 is provided with a gold-plating transfer bracket 43, and a through slot 430 is formed in a middle portion of the gold-plating transfer bracket 43; the gold plating transfer bracket 43 is provided with a plurality of connection grooves 431 along the directions of the sides, and one end of the suction nozzle assembly 44 is fixed at a preset position of the connection groove 431.

In this embodiment, the first X-axis moving component 41 is matched with a photoelectric switch and an induction piece through a screw motor to realize the functions thereof, so as to realize the high-precision positioning and rapid movement of the suction nozzle component 44 in the X-axis direction; the first Z-axis moving assembly 42 performs its function by cylinder-engaging a slider to effect up-and-down movement of the nozzle assembly 44 with less mechanical complexity; such a combination allows the gold plate transfer set 40 to quickly respond and complete capture, transfer and placement of gold plates, improving overall production efficiency and reducing operational cycle time.

Referring to fig. 7, the nozzle assembly 44 includes a support arm 441 fixed at a preset position of the connection slot 431, a sliding member 442 is slidably connected to one side of the support arm 441, a sliding direction of the sliding member 442 is parallel to the Z-axis direction, a nozzle head 443 is fixed on the sliding member 442, and a position of the nozzle head 443 corresponds to a position of the positioning slot 300 one by one; the arm 441 is further fixed with a piston rod 444, the axial direction of the piston rod 444 is parallel to the Z-axis direction, a slideway is arranged at the tail end of the suction nozzle head 443, and the piston rod 444 extends into the slideway to be in sliding connection with the suction nozzle head 443.

The suction nozzle 443 is used for sucking the gold plating piece, the suction nozzle 443 is in sliding connection with the support arm 441 through the sliding piece 442, and the suction nozzle 443 is in sliding connection with the piston rod 444 arranged along the Z-axis direction, so that the buffering effect in the Z-axis direction can be achieved, and the situation that the force applied by the suction nozzle 443 to the middle frame of the mobile phone is overlarge when the first Z-axis moving component 42 drives the suction nozzle component 44 to move downwards to enable the gold plating piece to be attached to the middle frame of the mobile phone is avoided.

Referring to fig. 3, further, a camera component and a thermal imaging sensing component are arranged on one side of the laser head 643, the camera component is used for shooting image information on the mobile phone middle frame, and the thermal imaging sensing component is used for detecting heat information of the mobile phone middle frame;

The camera assembly and the thermal imaging sensing assembly are respectively connected with a control system, which controls the operation of the laser Y-axis moving assembly 61, the laser X-axis moving assembly 62, the laser Z-axis moving assembly 63 and the laser light source assembly 641 according to the image information and the heat information.

Embodiment two:

the invention also provides a welding method of the mobile phone middle frame horizontal gold-plating sheet, which is applied to the welding equipment of the mobile phone middle frame horizontal gold-plating sheet as in the first embodiment, and comprises the following steps:

s1: the gold plating sheets are sequentially placed in the positioning grooves 300 on the positioning jig 30 through the feeding assembly 20, and meanwhile, the mobile phone center to be welded is conveyed to the position below the laser welding device 60 through the center transferring assembly 50;

s2: the gold-plated pieces in each positioning groove 300 are sucked in batches through the gold-plated piece transferring assembly 40 and are transported to a preset welding position on the middle frame of the mobile phone in batches;

In this stage, the gold plating sheet is precisely positioned and fixed at a predetermined welding position on the center of the mobile phone, ensuring the initial accuracy of the welding process, and facilitating improvement of the welding quality.

S3: starting the laser welding device 60, and moving the laser head 643 through the laser Y-axis moving assembly 61, the laser X-axis moving assembly 62 and the laser Z-axis moving assembly 63 to align the laser beam with a preset welding position on the mobile phone middle frame;

S4: in the welding process, the image information and the heat information of the middle frame of the mobile phone are respectively obtained in real time through the camera component and the thermal imaging sensing component, the control system obtains real-time welding quality feedback through data processing and analysis of the image information and the heat information, and the position of the laser head 643 and the power of the laser source component 641 are controlled according to the welding quality feedback so as to optimize the welding path and the welding quality;

s5: after the welding is completed, the middle frame transfer assembly 50 moves the welded middle frame of the mobile phone back to the initial position, and the welded middle frame of the mobile phone is replaced by the middle frame of the mobile phone to be welded through the manipulator so as to perform the welding process of the next round.

The working principle of the invention is as follows: the positioning and assembly of the gold plating sheet and the mobile phone middle frame are realized through a fine automatic process, the equipped camera component and the thermal imaging sensor monitor the welding process in real time, collect image and heat information, and the information is processed and analyzed by the control system in real time to obtain real-time feedback of welding quality, so that the position of the laser head 643 and the power of the laser source component 641 are regulated to optimize the welding path and quality, and the high precision and quality control of the whole welding process are ensured. Compared with the prior art, the welding method can greatly improve the accuracy and repeatability of welding through automatic positioning and accurate laser guidance; secondly, the real-time monitoring and quality feedback system can immediately identify and correct any quality deviation in the welding process, so that real-time quality control is realized; in addition, the method has good adaptability and flexibility, and can adapt to different welding environments and materials; finally, the method remarkably improves the overall production efficiency and the quality of the final product by reducing material loss and improving welding precision.

In this embodiment, it is further explained that step S4 specifically includes:

s41: the control system acquires initial image information of a mobile phone middle frame and a horizontal gold-plated sheet through a camera component;

the initial image information is acquired to establish the location of the weld initiation point to provide a reference for subsequent accurate butt welding.

S42, extracting geometric data of a welding path from the initial image information by adopting an image processing algorithm of edge detection and feature recognition to form welding path planning information;

using image processing techniques such as edge detection and feature recognition, the control system extracts exact welding path geometry data from the initial image; this step converts the visual information into executable planning information, providing accurate work orders for the welding equipment.

S43, the control system performs data processing and analysis on the image information and the heat information obtained in real time so as to evaluate welding quality and obtain real-time welding quality feedback; the image information comprises welding spot brightness and welding seam morphology, and the heat information comprises a temperature distribution map of a welding area;

the step requires the control system to process and analyze the image information and the heat information collected in real time in the welding process in real time; the image information can provide real-time feedback of the welding spot and the welding seam appearance in the welding process, the heat information gives the temperature distribution condition of the welding area, and the information is used for evaluating whether the welding is carried out according to preset parameters; assessing the weld quality in real time ensures quality control of the product and responds immediately to possible deviations.

S44, judging whether the welding track needs to be corrected or not by the control system according to real-time welding quality feedback, and if not, continuing to execute welding path planning information; if yes, the welding path planning information is corrected, and the corrected welding path planning information is executed.

After receiving the welding quality feedback in S43, the control system needs to determine whether the welding track needs to be adjusted; if the weld quality is within the acceptable range, the system will continue to perform operations according to the predetermined weld path planning information; if the weld quality is not acceptable, the control system will adjust the weld path planning information to correct any discovered quality issues, which may include adjusting the speed of movement, trajectory of the laser head 643 or power setting of the laser light source assembly 641, and then performing this modified weld path.

Further, in this embodiment, step S43 specifically includes:

S431, the control system adopts an image contrast analysis model to identify the image information so as to obtain the position of the welding point, compares the position of the welding point with the welding path planning information, and identifies the deviation of the welding point when the position of the welding point deviates;

when the welding spot does not accord with the preset track, the system judges whether adjustment is needed or not by quantifying the deviation degree of the actual position and the expected position of the welding spot.

S432, analyzing the weld joint morphology of the image information and analyzing the welding quality of the weld joint; the weld morphology includes the continuity, width, and uniformity of the weld;

through careful analysis of the weld morphology, the system can determine whether the welding process is smooth and whether potential quality problems exist, such as weld discontinuities and width inconsistencies.

S433, the control system identifies whether heat distribution is uniform or not by analyzing the heat map; if the temperature of any area is obviously higher or lower than a preset ideal temperature range, the control system judges that the temperature is abnormal;

if the temperature in any of the zones deviates significantly from the preset ideal range (whether too high or too low), the system identifies it as a temperature anomaly, thereby preventing overheating or shortage of the weld.

And S434, evaluating the abnormality degree of the welding deviation and the temperature abnormality to obtain real-time welding quality feedback.

The degree of abnormality and the possible impact are quantitatively analyzed, and based on the evaluation, the system generates real-time weld quality feedback that is used to guide whether adjustments to the weld trajectory are needed to correct any quality problems identified.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A welding device for a mobile phone middle frame horizontal gold-plated sheet is characterized by comprising: a workbench (10), a middle frame transfer assembly (50) and a laser welding device (60) which are arranged on the workbench (10), wherein the middle frame transfer assembly (50) is used for conveying a mobile phone middle frame to the lower part of the laser welding device (60);

The laser welding device (60) comprises a laser Y-axis moving assembly (61), a laser X-axis moving assembly (62), a laser Z-axis moving assembly (63) and a laser welding assembly (64), wherein the laser Z-axis moving assembly (63) is arranged on the moving end of the laser X-axis moving assembly (62), and the laser X-axis moving assembly (62) is arranged on the moving end of the laser Y-axis moving assembly (61);

The laser welding assembly (64) comprises a laser light source assembly (641) arranged on the moving end of the laser Z-axis moving assembly (63), a prism assembly (642) is arranged at the outlet of the laser light source assembly (641), a laser head (643) is further arranged on one side of the prism assembly (642) along the Y-axis direction, a light source inlet of the laser head (643) faces the prism assembly (642), and a light source outlet of the laser head (643) is used for emitting laser;

Wherein, laser source subassembly (641) with prism subassembly (642) all set up along the Z axle direction, and in the X axle direction not outstanding in the extreme outside border of laser Z axle removal subassembly (63), laser head (643) in the X axle direction at least partially with laser X axle removal subassembly (62) coincide.

2. Welding apparatus according to claim 1, characterized in that one end of the laser X-axis moving assembly (62) is arranged on one side of the laser Y-axis moving assembly (61), the other end of the laser X-axis moving assembly (62) is arranged on the other side of the laser Y-axis moving assembly (61), and a laser welding assembly (64) is located on one side of the laser Y-axis moving assembly (61).

3. The welding apparatus according to claim 2, wherein the laser Z-axis moving assembly (63) is movable by the laser X-axis moving assembly (62) in an X-axis direction between a first position and a second position, wherein the first position and the second position are both provided on one side of the laser Y-axis moving assembly (61);

along the X-axis direction, the distance from the laser Z-axis moving component (63) to the laser Y-axis moving component (61) is smaller than the distance from the other end of the laser X-axis moving component (62) to the laser Y-axis moving component (61).

4. The welding equipment according to claim 2, wherein the workbench (10) is further provided with a positioning jig (30) and a gold plating sheet transfer assembly (40);

The positioning jig (30) is provided with a plurality of positioning grooves (300) for accommodating gold-plated sheets, and the positions of the positioning grooves (300) are in one-to-one correspondence with preset welding positions on the mobile phone middle frame;

A feeding assembly (20) is arranged on one side of the workbench (10), and the feeding assembly (20) is used for conveying gold-plated sheets into the positioning groove (300); the middle frame transfer assembly (50) is arranged on the other side of the workbench (10);

The gold-plated sheet transferring assembly (40) is used for carrying gold-plated sheets in the positioning groove (300) to a preset welding position on a mobile phone middle frame, the gold-plated sheet transferring assembly (40) comprises a plurality of suction nozzle assemblies (44), and the positions of the suction nozzle assemblies (44) are in one-to-one correspondence with the positions of the positioning groove (300).

5. The welding equipment according to claim 4, wherein the positioning jig (30) comprises a positioning platform (31) arranged on the workbench (10), a base plate (32) is arranged on the positioning platform (31), movable plates (33) are arranged along each edge of the base plate (32), the movable plates (33) are matched with the base plate (32) to form the positioning groove (300), and the movable plates (33) can move horizontally relative to the base plate (32) to change the size of the positioning groove (300), and the minimum size of the positioning groove (300) is consistent with the size of a gold plating piece.

6. The welding equipment according to claim 5, wherein the middle frame transfer assembly (50) comprises a second X-axis moving assembly (51) arranged along the X-axis direction, a middle frame transfer support (52) is arranged at the output end of the second X-axis moving assembly (51), a sucker (53) for fixing a middle frame of the mobile phone is arranged on the middle frame transfer support (52), a second vacuum air passage is arranged in the sucker (53), one end of the second vacuum air passage is communicated with the vacuum generator through a vacuum filter, and the other end of the second vacuum air passage extends to the upper surface of the sucker (53) to adsorb the middle frame of the mobile phone.

7. Welding apparatus according to claim 6, wherein the positioning jig (30) is arranged on one side of the table (10) in the X-axis direction, and the middle frame transfer assembly (50) is arranged on the other side of the table (10);

Along Y axle direction, be equipped with two base plates (32) side by side on location platform (31), be equipped with two side by side on middle frame transfer support (52) sucking disc (53) the bilateral symmetry of middle frame transfer subassembly (50) is provided with two sets of gilt piece transfer subassembly (40).

8. The welding equipment according to claim 4, characterized in that one side of the laser head (643) is provided with a camera assembly for shooting image information on the mobile phone middle frame and a thermal imaging sensing assembly for detecting heat information of the mobile phone middle frame;

The camera assembly and the thermal imaging sensing assembly are respectively connected with a control system, and the control system controls the operation of the laser Y-axis moving assembly (61), the laser X-axis moving assembly (62), the laser Z-axis moving assembly (63) and the laser light source assembly (641) according to the image information and the heat information.

9. A method for welding a mobile phone middle frame horizontal gold-plated sheet, which is applied to the welding equipment of the mobile phone middle frame horizontal gold-plated sheet according to claim 8, and comprises the following steps:

S1: sequentially placing a plurality of gold-plated sheets into each positioning groove (300) on a positioning jig (30) through a feeding assembly (20), and simultaneously conveying a mobile phone middle frame to be welded to the lower part of a laser welding device (60) through a middle frame transferring assembly (50);

S2: sucking the gold-plated pieces in each positioning groove (300) in batches through a gold-plated piece transferring assembly (40) and carrying the gold-plated pieces to preset welding positions on a mobile phone middle frame in batches;

S3: starting a laser welding device (60), and moving a laser head (643) through a laser Y-axis moving assembly (61), a laser X-axis moving assembly (62) and a laser Z-axis moving assembly (63) so as to align the laser beam to a preset welding position on a mobile phone middle frame;

S4: in the welding process, the image information and the heat information of the middle frame of the mobile phone are respectively obtained in real time through the camera component and the thermal imaging sensing component, the control system obtains real-time welding quality feedback through data processing and analysis of the image information and the heat information, and the position of the laser head (643) and the power of the laser source component (641) are controlled according to the welding quality feedback so as to optimize the welding path and the welding quality;

S5: after the welding is finished, the middle frame transferring assembly (50) moves the welded middle frame of the mobile phone back to the initial position, and the welded middle frame of the mobile phone is replaced by the middle frame of the mobile phone to be welded through the manipulator so as to carry out the welding process of the next round.

10. The welding method according to claim 9, wherein the control system obtains real-time welding quality feedback by data processing and analysis of the image information and the heat information, in particular comprising:

s41: the control system acquires initial image information of a mobile phone middle frame and a horizontal gold-plated sheet through a camera component;

S42: extracting geometric data of a welding path from the initial image information by adopting an image processing algorithm of edge detection and feature recognition to form welding path planning information;

S43: the control system performs data processing and analysis on the image information and the heat information obtained in real time so as to evaluate welding quality and obtain real-time welding quality feedback; the image information comprises welding spot brightness and welding seam morphology, and the heat information comprises a temperature distribution map of a welding area;

S44: according to the real-time welding quality feedback, the control system judges whether the welding track needs to be corrected, if not, the welding path planning information is continuously executed; if yes, the welding path planning information is corrected, and the corrected welding path planning information is executed.