A welding machine and welding method for a mobile phone middle frame horizontal gold-plated sheet

Abstract

The application relates to the technical field of metal welding, in particular to a welding machine and welding method for a horizontally gold-plated piece of a mobile phone middle frame, which comprises a machine body, two object frames arranged above the machine body and distributed left and right, and a support fixedly installed on the machine body; a supporting and cooling mechanism is arranged on the object frame. The suction head is floated with the four corners of the mobile phone middle frame as the reference under the support of the second spring rod, can automatically adapt to the slight height difference between the middle frame and the gold-plated piece, can reliably adhere the gold-plated piece to the middle frame before welding and eliminate the gap, improves the alignment accuracy, the second spring rod can be changed from flexible floating support to rigid hard support, ensures that the gold-plated piece is stably pressed without deviation during the welding process, thereby improving the consistency and connection strength of the welding points, reducing the false welding, the heat sink cooperates with the air suction pipe to timely discharge the welding heat, reduces the thermal influence of the mobile phone middle frame and the gold-plated piece, prevents overheating deformation, oxidation or failure of the adhesive layer, and improves the yield of finished products.

Description

Technical Field

[0001] This invention relates to the field of metal welding technology, and in particular to a welding machine and welding method for horizontal gold-plated sheets on the mid-frame of a mobile phone. Background Technology

[0002] The horizontal gold-plated sheet on the mobile phone frame refers to the gold-plated spring sheet horizontally welded to the inside of the mobile phone's metal frame. It is mainly used to achieve reliable grounding, antenna signal feeding, or electromagnetic shielding connection between the motherboard circuit and the metal frame. The gold plating layer utilizes gold's strong oxidation resistance, corrosion resistance, and excellent conductivity to ensure that even in long-term use or under slight oxidation environment, the contact point can still maintain extremely low contact resistance, thereby steadily improving the mobile phone's signal reception quality, reducing radio frequency interference, and avoiding signal attenuation or noise caused by poor contact.

[0003] Currently, the following problems still exist when welding horizontal gold-plated sheets on the mobile phone frame: The existing welding method is to directly use rigid clamps to place the horizontal gold-plated sheets on the mobile phone frame for welding. However, due to the slight dimensional tolerances of the frame and the gold-plated sheets, poor adhesion, positional misalignment, or surface scratches may occur, affecting the welding accuracy. Furthermore, the heat generated during the welding process cannot be quickly dissipated, which can easily cause local overheating and deformation of the frame or oxidation and discoloration of the gold-plated sheets. This not only reduces the product yield but also affects the stability of continuous operation due to heat accumulation. Summary of the Invention

[0004] In view of the problems in the above-mentioned or existing technologies, such as the rigid clamping of the horizontal gold-plated sheet when welding the horizontal gold-plated sheet of the mobile phone frame and the inability to quickly dissipate the heat generated during the welding process, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides a welding machine and welding method for a horizontal gold-plated sheet for a mobile phone frame, which is achieved by the following specific technical means: A welding machine for horizontal gold-plated sheets of mobile phone frame includes a body and two storage frames disposed on the upper part and distributed on the left and right, and a bracket is fixedly installed on the body. A cooling support mechanism is provided on the storage frame. The cooling support mechanism includes two placement plates arranged on the upper surface of the storage frame and distributed on the left and right. The placement plates are provided with positioning blocks and movable clamps. A first spring rod is slidably installed in the movable clamp. Several second spring rods and an adsorption head are provided at the lower end of the first spring rod. Heat sinks are provided in the placement plates. An air suction pipe for absorbing welding heat is provided above the adsorption head. A locking component is provided on the storage frame. A welding mechanism is mounted on a support; the welding mechanism includes a support plate that is slidably mounted up and down in the support, a welding assembly is mounted on the support plate, and a docking assembly that is plugged into and cooperates with a locking assembly is fixedly mounted on the welding assembly. The positioning block fixes the phone frame to the placement plate. The adsorption head of the adsorption horizontal gold-plated sheet floats above the phone frame with the four corners as the reference under the support of the second spring rod. The welding assembly descends for welding, and the second spring rod retracts to convert the flexible support into a rigid support.

[0006] Preferably, a first electric slide rail is fixedly installed on the upper part of the machine body, a carrier is fixedly installed on the moving end of the first electric slide rail, two storage frames are fixedly installed on the upper surface of the carrier, a second electric slide rail is fixedly installed on the bracket, the moving end of the second electric slide rail is fixedly connected to the support plate, a welding assembly is fixedly installed on the support plate, and a welding head is fixedly installed on the lower end of the welding assembly.

[0007] Preferably, the positioning block is fixedly installed at the center of the upper surface of the placement plate, and a cooling groove is opened on the positioning block that penetrates the lower surface of the placement plate. The heat sink is fixedly installed in the cooling groove, and heat dissipation pipes are fixedly installed on the heat sink.

[0008] Preferably, the movable clamp has a sliding groove, in which a positioning cylinder is slidably installed. A U-shaped locking block is fitted on the outer ring wall of the upper end of the positioning cylinder. A nut that is threadedly connected to the outer ring wall of the upper end of the positioning cylinder is rotatably installed on the upper end of the U-shaped locking block. The first spring rod slides through the positioning cylinder.

[0009] Preferably, a fixing ring is fixedly installed on the outer ring wall at the lower end of the first spring rod. An annular groove is opened on both the upper and lower end faces of the fixing ring. A support slider corresponding to the second spring rod is slidably installed on the annular groove. A screw located in the annular groove is threaded through the support slider. The support slider is hinged to the corresponding second spring rod.

[0010] Preferably, the second spring rod is hinged to a positioning plate by a torsion spring on the side away from the corresponding support slider, and the outer side of the positioning plate is covered with a rubber layer.

[0011] Preferably, the lower end of the first spring rod is fixedly connected to the adsorption head, and an equipment ring is fixedly installed on the upper end of the adsorption head. Several suction tubes are fixedly installed on the equipment ring in a circumferential array.

[0012] Preferably, the docking assembly includes legs fixedly installed at the four corners of the welding assembly, with docking posts fixedly installed at the lower ends of the legs, and grooves provided on the docking posts.

[0013] Preferably, the locking assembly includes a fixed crossbar that is fixedly installed on the storage frame and is symmetrical about the placement plate. A docking cylinder corresponding to the docking post is fixedly installed on the symmetrical fixed crossbar. A locking chamber is fixedly installed on the docking cylinder. A locking plate that mates with a groove is hinged inside the locking chamber by a torsion spring.

[0014] Preferably, a welding method for a horizontal gold-plated sheet on a mobile phone frame, based on the welding machine for the horizontal gold-plated sheet on a mobile phone frame as described above, includes the following steps: S1: Place the phone frame: Position the phone frame to be soldered on the placement plate; S2: Adsorption of horizontal gold-plated sheet: The horizontal gold-plated sheet is adsorbed by the adsorption head, and under the action of the second spring rod, the horizontal gold-plated sheet floats and is suspended above the mobile phone frame with the four corners as the reference. S3: Enter the welding station: Activate the first electric slide rail to move the storage frame holding the mobile phone frame to the welding station below the welding components; S4: Pre-welding locking: The second electric slide rail is activated to drive the welding assembly to descend. The locking assembly and the docking assembly cooperate to lock the welding assembly and the storage frame. S5: Welding: The welding component continues to descend, causing the second spring rod to retract and transform the flexible support into a rigid support, ensuring that the horizontal gold-plated sheet is tightly attached to the welding area of ​​the phone's mid-frame. At the same time, the suction pipe draws out the welding heat and fumes, and the heat sink provides auxiliary heat dissipation. S6: Switching stations: After welding is completed, the second electric slide rail drives the support plate and welding components to rise, the first electric slide rail moves the current storage frame out of the welding station, and at the same time sends another storage frame with the mobile phone frame into the welding station, takes out the welded mobile phone frame, and repeats the welding operation.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the adsorption head floats with the four corners of the mobile phone frame as a reference under the support of the second spring rod, which can automatically adapt to the slight height difference between the frame and the gold-plated sheet, so that the gold-plated sheet can reliably fit with the frame before welding to eliminate gaps and improve alignment accuracy. The second spring rod can be changed from a flexible floating support to a rigid support to ensure that the gold-plated sheet is stably compressed and does not shift during the welding process, thereby improving the consistency and connection strength of the weld and reducing the number of false welds. The heat sink, together with the suction pipe, promptly dissipates the welding heat, reduces the thermal impact on the mobile phone frame and the gold-plated sheet, prevents overheating deformation, oxidation or adhesive layer failure, and improves the yield of finished products. At the same time, the locking component and the docking component are plugged in to quickly lock the welding component and the placement frame, ensuring that the welding position is consistent every time, reducing debugging time, and enhancing the structural stability during the welding process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a three-dimensional structural diagram of the present invention during operation.

[0018] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the cooling mechanism and welding mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the cooling mechanism supported by the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the first spring rod and the second spring rod of the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the suction tube and adsorption head of the present invention.

[0023] Figure 7 This is a cross-sectional perspective view of the second spring rod of the present invention.

[0024] Figure 8 for Figure 7 A magnified structural diagram of point A in the middle.

[0025] Figure 9 This is a three-dimensional structural diagram of the docking component and locking component of the present invention.

[0026] Figure 10 for Figure 9 A magnified structural diagram at point B in the middle.

[0027] In the diagram: 1. Body; 2. Storage frame; 21. First electric slide rail; 22. Carrier; 3. Bracket; 4. Support cooling mechanism; 41. Placement plate; 42. Positioning block; 421. Cooling tank; 43. Movable clamp; 431. Slide groove; 432. Positioning cylinder; 433. U-shaped locking block; 434. Nut; 44. First spring rod; 45. Second spring rod; 451. Fixing ring; 452. Annular groove; 453. Support slider; 454. Screw; 4 55. Positioning plate; 46. Adsorption head; 47. Heat sink; 471. Heat dissipation pipe; 48. Suction pipe; 481. Equipment ring; 49. Locking assembly; 491. Fixed crossbar; 492. Docking cylinder; 493. Locking chamber; 494. Clamping plate; 5. Welding mechanism; 51. Support plate; 511. Second electric slide rail; 52. Welding assembly; 53. Welding head; 54. Docking assembly; 541. Support leg; 542. Docking post; 543. Groove. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A welding machine for horizontal gold-plated sheets of mobile phone frame includes a body 1 and two storage frames 2 arranged on the upper part and distributed on the left and right. A bracket 3 is fixedly installed on the body 1.

[0031] A cooling support mechanism 4 is provided on the storage frame 2. The cooling support mechanism 4 includes two placement plates 41 arranged on the upper surface of the storage frame 2 and distributed on the left and right. A positioning block 42 and a movable clamp 43 are provided on the placement plate 41. A first spring rod 44 is slidably installed in the movable clamp 43. Several second spring rods 45 and an adsorption head 46 are provided at the lower end of the first spring rod 44. A heat sink 47 is provided in the placement plate 41. An air suction pipe 48 for absorbing welding heat is provided above the adsorption head 46. A locking component 49 is provided on the storage frame 2.

[0032] Please see Figure 2 , Figure 3 and Figure 9 The welding mechanism 5 is mounted on the bracket 3. The welding mechanism 5 includes a support plate 51 that is slidably mounted on the bracket 3. A welding component 52 is mounted on the support plate 51. A docking component 54 that is inserted and engaged with the locking component 49 is fixedly mounted on the welding component 52.

[0033] Positioning block 42 fixes the mobile phone frame onto placement plate 41. Adsorption head 46, which adsorbs the horizontal gold-plated sheet, floats above the mobile phone frame with the four corners as reference, supported by second spring rod 45. Welding assembly 52 descends for welding, and second spring rod 45 retracts to convert flexible support into rigid support.

[0034] In actual operation, the body 1 provides a stable support platform, the bracket 3 is used to support the welding mechanism 5 above, the placement plate 41 is made of heat-conducting material, the positioning block 42 is fixed on the placement plate 41, and its shape and position match the shape of the mobile phone frame to physically restrict the movement of the mobile phone frame and achieve preliminary positioning. The first spring rod 44 enables the adsorption head 46 to achieve elastic sliding in the up and down direction within the movable clamp 43. The adsorption head 46 achieves adsorption of the horizontal gold-plated sheet by generating negative pressure through a vacuum pump.

[0035] Several second spring rods 45 are independent micro spring columns that can extend and retract independently, thereby providing multi-point flexible support after the adsorption head 46 adsorbs the horizontal gold-plated sheet, allowing the gold-plated sheet to float above the mid-frame within a small range, with the four corners of the phone's mid-frame as a reference.

[0036] The heat sink 47 passively dissipates the heat absorbed by the placement plate 41. The suction pipe 48 is connected to an external exhaust device through a flexible hose. Its opening is located in the area above the adsorption head 46, and is used to remove the local heat and fumes generated during welding by negative pressure.

[0037] The welding assembly 52 is an integrated module that includes a welding power source. When the welding assembly 52 descends, the docking components 54 and the locking components 49 engage to achieve precise alignment between the welding mechanism 5 and the storage frame 2.

[0038] During welding, the phone frame is manually placed on the placement plate 41 and pushed into the limiting area formed by the positioning block 42, thus achieving initial fixation of the frame. After the phone frame is positioned, the suction head 46 uses suction to adsorb a horizontal gold-plated sheet. Due to the flexible support of the second spring rod 45, the adsorbed gold-plated sheet can adaptively adjust according to the slight unevenness of the phone frame surface, maintaining a floating state that is roughly parallel to the four corners of the frame, avoiding scratches caused by hard contact. When the gold-plated sheet floats into place, the welding mechanism 5 drives the support plate 51 to descend, bringing the welding component 52 closer to the phone frame until the welding component 52 contacts the gold-plated sheet and performs the welding operation. As the welding component 52 continues to descend, the pressure it applies will compress the second spring rod 45. When the second spring rod 45 is fully contracted or reaches the preset compression amount, its elastic support weakens or disappears, and the support between the suction head 46 and the phone frame becomes a rigid contact, ensuring that the horizontal gold-plated sheet is tightly attached to the welding area of ​​the phone frame at the moment of welding, thus ensuring the strength and precision of the welding.

[0039] This solves the problems of poor adhesion, positional misalignment, and surface scratches caused by dimensional tolerances during the welding of horizontal gold-plated sheets in the mobile phone frame. At the same time, by combining the air intake pipe 48 and the heat sink 47, the risk of frame deformation and oxidation discoloration of the gold-plated sheets caused by the accumulation of welding heat is reduced, thereby improving welding accuracy, product yield, and ensuring the stability of continuous operation.

[0040] Please see Figure 2 , Figure 3 and Figure 9 A first electric slide rail 21 is fixedly installed on the upper end of the machine body 1. A carrier 22 is fixedly installed on the moving end of the first electric slide rail 21. Two storage frames 2 are fixedly installed on the upper surface of the carrier 22. A second electric slide rail 511 is fixedly installed on the bracket 3. The moving end of the second electric slide rail 511 is fixedly connected to the support plate 51. A welding assembly 52 is fixedly installed on the support plate 51. A welding head 53 is fixedly installed on the lower end of the welding assembly 52.

[0041] In actual operation, the first electric slide rail 21 enables the two storage boxes 2 to move quickly and smoothly back and forth between different workstations, solving the problems of low efficiency and positioning deviation, ensuring that the storage boxes 2 can accurately reach the welding workstation, thereby improving the efficiency and automation level of multi-workstation switching.

[0042] The second electric slide rail 511 provides vertical drive for the welding assembly 52. ​​Through its moving end, it drives the support plate 51 to rise and fall, which can precisely control the contact pressure and welding height between the welding head 53 and the mobile phone frame, ensuring the stability of the welding process and improving the continuity, positioning accuracy and production efficiency of the welding operation.

[0043] Please see Figure 3 , Figure 4 and Figure 5 The positioning block 42 is fixedly installed at the center of the upper end face of the placement plate 41. A cooling groove 421 is opened on the positioning block 42, penetrating the lower end face of the placement plate 41. The heat sink 47 is fixedly installed in the cooling groove 421, and a heat dissipation pipe 471 is fixedly installed on the heat sink 47.

[0044] In actual operation, the positioning block 42 serves as a fixed reference for the mobile phone frame. The cooling groove 421 at its center can be directly close to the bottom of the welding area. The heat sink 47 is placed in the groove to achieve close-range heat conduction near the heat source. The heat dissipation pipe 471 on the heat sink 47 introduces a fluid circulation cooling mechanism, which allows the heat to be quickly carried away from the welding station through the cooling medium in the pipe. Furthermore, through the cooperation of the heat dissipation pipe 471 and the heat sink 47, the original passive heat conduction is transformed into active forced convection heat dissipation, ensuring that the mobile phone frame is always in a stable temperature field during the welding process, avoiding material deformation and oxidation discoloration of the gold plating due to local overheating.

[0045] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The movable clamp 43 has a sliding groove 431, and a positioning cylinder 432 is slidably installed in the sliding groove 431. A U-shaped locking block 433 is sleeved on the outer ring wall of the upper end of the positioning cylinder 432. A nut 434 that is threadedly connected to the outer ring wall of the upper end of the positioning cylinder 432 is rotatably installed on the upper end of the U-shaped locking block 433. The first spring rod 44 slides through the positioning cylinder 432.

[0046] In actual operation, the sliding engagement between the slide groove 431 and the positioning cylinder 432 allows the lateral installation position of the first spring rod 44 to be adjusted, which can flexibly adapt to the welding requirements of mobile phone frames of different sizes and specifications, improve the versatility of the welding equipment and its compatibility with various product models. At the same time, the locking mechanism consisting of the U-shaped card block 433 and the nut 434 can securely lock the positioning cylinder 432 in a specific position of the slide groove 431 after adjustment, preventing the suction head 46 from being accidentally displaced due to vibration or external force during the welding process, and ensuring the alignment accuracy and stability of the welding.

[0047] Please see Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A fixing ring 451 is fixedly installed on the outer ring wall at the lower end of the first spring rod 44. The upper and lower end faces of the fixing ring 451 are provided with annular grooves 452. Support sliders 453 corresponding to the second spring rods 45 are slidably installed on the annular grooves 452. A screw 454 located in the annular grooves 452 is threaded through the support sliders 453. The support sliders 453 are hinged to the corresponding second spring rods 45.

[0048] In actual operation, the cooperation between the annular groove 452 and the support slider 453 allows the support point of the second spring rod 45 to be adjusted circumferentially within a certain range, thereby flexibly matching the gold-plated sheets of the mobile phone frame of different specifications or layouts. The screw 454 can precisely lock the position of the support slider 453, ensuring that the support point remains stable during the descent of the welding component 52 and the transition of the second spring rod 45 from flexible support to rigid support, avoiding a decrease in welding accuracy due to uneven force or displacement. In addition, the hinge between the support slider 453 and the second spring rod 45 allows the second spring rod 45 to automatically adjust its tilt angle when contacting the frame, further ensuring a tight fit between the adsorption head 46 and the surface of the mobile phone frame, avoiding welding defects caused by poor contact. Thus, during the welding of the horizontal gold-plated sheets of the mobile phone frame, the problem of a single spring support structure being unable to achieve precise alignment and adaptive adjustment due to the complex shape of the frame and the variable position of the gold-plated sheets is avoided.

[0049] Please see Figure 5 , Figure 6 and Figure 7The second spring rod 45 is hinged to a positioning plate 455 on the side away from the corresponding support slider 453 by a torsion spring. The outer side of the positioning plate 455 is covered with a rubber layer.

[0050] In actual operation, the torsion spring enables the positioning plate 455 to rotate adaptively at a small angle according to the local geometric features of the mobile phone frame, ensuring that the positioning plate 455 is always stably attached to the surface of the frame in a surface contact manner, avoiding the instability caused by point contact. The rubber layer enhances the gripping force between the positioning plate 455 and the frame, suppressing the possible slippage or displacement of the gold-plated sheet during the application of welding pressure.

[0051] Please see Figure 6 and Figure 7 The lower end of the first spring rod 44 is fixedly connected to the adsorption head 46, and the upper end of the adsorption head 46 is fixedly installed with a device ring 481. Several suction tubes 48 are fixedly installed on the device ring 481 in a circumferential array.

[0052] In actual operation, the suction pipe 48 can move along with the suction head 46. No matter what floating position the suction head 46 is in, the suction pipe 48 can accurately align with the area around the welding point to form a surrounding suction area. This can remove the fumes generated during the welding process, preventing them from contaminating the welding surface. Through continuous airflow, the heat generated in the welding area is carried away, avoiding excessive heat accumulation at the contact point between the horizontal gold-plated sheet and the mobile phone frame. This prevents oxidation and discoloration caused by local overheating and also prevents the mobile phone frame from deforming locally due to high temperature, thereby improving welding quality and product yield.

[0053] Please see Figure 3 and Figure 9 The docking assembly 54 includes legs 541 fixedly installed at the four corners of the welding assembly 52. ​​A docking post 542 is fixedly installed at the lower end of the legs 541, and a groove 543 is provided on the docking post 542.

[0054] Please see Figure 3 , Figure 9 and Figure 10 The locking assembly 49 includes a fixed crossbar 491 that is fixedly installed on the storage frame 2 and is symmetrical about the placement plate 41. A docking cylinder 492 corresponding to the docking post 542 is fixedly installed on the symmetrical fixed crossbar 491. A locking chamber 493 is fixedly installed on the docking cylinder 492. A card plate 494 that cooperates with the groove 543 is hinged in the locking chamber 493 by a torsion spring.

[0055] During the actual operation, as the welding component 52 descends, the docking post 542 can be precisely inserted into the docking cylinder 492, achieving precise guidance between the welding component 52 and the storage frame 2, avoiding relative positional deviation between the welding head 53 and the mobile phone frame. When the welding component 52 descends to the correct position, the locking plate 494, which is hinged by a torsion spring in the locking chamber 493, can semi-automatically engage with the groove 543 on the docking post 542, thereby firmly locking the welding component 52 and the storage frame 2 together to form a rigid whole, ensuring the absolute stability of the position between the welding head 53 and the mobile phone frame, while ensuring that the welding pressure can be applied evenly and continuously to the welding area.

[0056] Please see Figure 1 - Figure 10 This invention also provides a welding method for a horizontal gold-plated sheet on a mobile phone frame, based on the above-mentioned welding machine for the horizontal gold-plated sheet on the mobile phone frame, including the following steps: S1: Place the mobile phone frame: Place the mobile phone frame to be welded on the placement plate 41, use the positioning block 42 to position the mobile phone frame, and use the movable clamp 43 to clamp and fix the mobile phone frame so that the four corners of the mobile phone frame correspond to the preset positions of the suction head 46.

[0057] S2: Adsorption of horizontal gold-plated sheet: The horizontal gold-plated sheet is adsorbed by the adsorption head 46. Under the elastic support of the second spring rod 45 and the positioning plate 455, the horizontal gold-plated sheet is suspended above the mobile phone frame with the four corners of the frame as the reference.

[0058] S3: Enter the welding station: Activate the first electric slide rail 21 to move the storage frame 2, which holds the mobile phone frame, to the welding station below the welding assembly 52.

[0059] S4: Pre-welding locking: Start the second electric slide rail 511 to drive the support plate 51 and the welding assembly 52 fixed on it to descend as a whole. During the descent, the docking column 542 is inserted into the corresponding docking cylinder 492, and the locking plate 494 is locked into the groove 543 under the action of the torsion spring, thereby locking the welding assembly 52 and the storage frame 2.

[0060] S5: Welding: Welding component 52 continues to descend, causing the second spring rod 45 to retract, transforming the flexible support into a rigid support, ensuring that the horizontal gold-plated sheet is tightly attached to the welding area of ​​the phone frame. At the same time, the suction pipe 48 draws out the welding heat and fumes, and the heat sink 47 provides auxiliary heat dissipation.

[0061] S6: Switching stations: After welding is completed, the second electric slide rail 511 drives the support plate 51 and welding component 52 to rise, the first electric slide rail 21 moves the current storage frame 2 out of the welding station, and at the same time sends another storage frame 2 with the mobile phone frame in place into the welding station, takes out the welded mobile phone frame, and repeats the welding operation.

[0062] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding machine for horizontal gold-plated sheets on the middle frame of a mobile phone, comprising a body (1) and two storage frames (2) disposed above it and distributed to the left and right, characterized in that: A bracket (3) is fixedly installed on the fuselage (1); The cooling mechanism (4) is mounted on the storage frame (2); The supporting cooling mechanism (4) includes two placement plates (41) arranged on the upper surface of the storage frame (2) and distributed on the left and right. The placement plate (41) is provided with a positioning block (42) and a movable clamp (43). A first spring rod (44) is slidably installed in the movable clamp (43). Several second spring rods (45) and an adsorption head (46) are provided at the lower end of the first spring rod (44). A heat sink (47) is provided in the placement plate (41). An air suction pipe (48) for absorbing welding heat is provided above the adsorption head (46). A locking component (49) is provided on the storage frame (2). Welding mechanism (5) is mounted on bracket (3); The welding mechanism (5) includes a support plate (51) that is slidably installed in the bracket (3), a welding assembly (52) is provided on the support plate (51), and a docking assembly (54) that is plugged into and cooperates with the locking assembly (49) is fixedly installed on the welding assembly (52). The positioning block (42) fixes the mobile phone frame on the placement plate (41). The adsorption head (46) adsorbs the horizontal gold-plated sheet and floats above the mobile phone frame with the four corners as the reference under the support of the second spring rod (45). The welding assembly (52) descends for welding, and the second spring rod (45) retracts to convert the flexible support into a rigid support.

2. The welding machine for horizontal gold-plated sheets of a mobile phone frame as described in claim 1, characterized in that: The upper end of the body (1) is fixedly installed with a first electric slide rail (21), the moving end of the first electric slide rail (21) is fixedly installed with a carrier (22), two storage frames (2) are fixedly installed on the upper surface of the carrier (22), the bracket (3) is fixedly installed with a second electric slide rail (511), the moving end of the second electric slide rail (511) is fixedly connected to the support plate (51), the welding assembly (52) is fixedly installed on the support plate (51), and the lower end of the welding assembly (52) is fixedly installed with a welding head (53).

3. The welding machine for the horizontal gold-plated sheet of the mobile phone frame as described in claim 1, characterized in that: The positioning block (42) is fixedly installed at the center of the upper end face of the placement plate (41). A cooling groove (421) penetrating the lower end face of the placement plate (41) is provided on the positioning block (42). The heat sink (47) is fixedly installed in the cooling groove (421). A heat dissipation pipe (471) is fixedly installed on the heat sink (47).

4. The welding machine for horizontal gold-plated sheets of a mobile phone frame as described in claim 1, characterized in that: The movable clamp (43) is provided with a sliding groove (431), and a positioning cylinder (432) is slidably installed in the sliding groove (431). A U-shaped locking block (433) is sleeved on the upper outer ring wall of the positioning cylinder (432). A nut (434) that is threadedly connected to the upper outer ring wall of the positioning cylinder (432) is rotatably installed on the upper end of the U-shaped locking block (433). The first spring rod (44) slides through the positioning cylinder (432).

5. The welding machine for the horizontal gold-plated sheet of the mobile phone frame as described in claim 4, characterized in that: A fixing ring (451) is fixedly installed on the outer ring wall at the lower end of the first spring rod (44). The upper and lower end faces of the fixing ring (451) are provided with annular grooves (452). Support sliders (453) corresponding to the second spring rods (45) are slidably installed on the annular grooves (452). A screw (454) located in the annular grooves (452) is threaded through the support sliders (453). The support sliders (453) are hinged to the corresponding second spring rods (45).

6. The welding machine for the horizontal gold-plated sheet of the mobile phone frame as described in claim 5, characterized in that: The second spring rod (45) is hinged to a positioning plate (455) on the side away from the corresponding support slider (453) by a torsion spring. The positioning plate (455) is covered with a rubber layer on the outside.

7. The welding machine for horizontal gold-plated sheets of a mobile phone frame as described in claim 4, characterized in that: The lower end of the first spring rod (44) is fixedly connected to the adsorption head (46), and the upper end of the adsorption head (46) is fixedly installed with a device ring (481). Several suction pipes (48) are fixedly installed on the device ring (481) in a circumferential array.

8. The welding machine for horizontal gold-plated sheets of a mobile phone frame as described in claim 2, characterized in that: The docking assembly (54) includes legs (541) fixedly installed at the four corners of the welding assembly (52), and docking posts (542) are fixedly installed at the lower end of the legs (541). Grooves (543) are provided on the docking posts (542).

9. The welding machine for the horizontal gold-plated sheet of the mobile phone frame as described in claim 8, characterized in that: The locking assembly (49) includes a fixed crossbar (491) fixedly installed on the storage frame (2) and symmetrical about the placement plate (41). A docking cylinder (492) corresponding to the docking post (542) is fixedly installed on the symmetrical fixed crossbar (491). A locking chamber (493) is fixedly installed on the docking cylinder (492). A card plate (494) that cooperates with the groove (543) is hinged in the locking chamber (493) by a torsion spring.

10. A method for welding a horizontal gold-plated sheet for a mobile phone frame, based on the welding machine for the horizontal gold-plated sheet of a mobile phone frame as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Place the mobile phone frame: Position the mobile phone frame to be welded on the placement plate (41); S2: Adsorb horizontal gold-plated sheet: The horizontal gold-plated sheet is adsorbed by the adsorption head (46), and under the action of the second spring rod (45), the horizontal gold-plated sheet floats and is suspended above the mobile phone frame with the four corners of the mobile phone frame as the reference. S3: Enter the welding station: Start the first electric slide rail (21) to move the storage frame (2) with the mobile phone frame to the welding station below the welding assembly (52); S4: Pre-welding locking: Start the second electric slide rail (511) to drive the welding assembly (52) down, and lock the welding assembly (52) and the storage frame (2) by cooperating with the locking assembly (49) and the docking assembly (54); S5: Welding: The welding assembly (52) continues to descend, causing the second spring rod (45) to retract, transforming the flexible support into a rigid support, ensuring that the horizontal gold-plated sheet is tightly attached to the welding area of ​​the mobile phone frame. At the same time, the suction pipe (48) draws out the welding heat and fumes, and provides auxiliary heat dissipation through the heat sink (47). S6: Switching stations: After welding is completed, the second electric slide rail (511) drives the support plate (51) and welding components (52) to rise, the first electric slide rail (21) moves the current storage frame (2) out of the welding station, and at the same time sends another storage frame (2) with the mobile phone frame clamped into the welding station, takes out the mobile phone frame that has been welded, and repeats the welding operation.

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