Double-end welding machine

Abstract

The utility model discloses a double-end welding machine which comprises a control machine box, a safety cover is arranged on the top of the control machine box, and a feeding mechanism, a feeding mechanism, two fixing mechanisms, two three-axis moving mechanisms, four wire feeding mechanisms, a left side overturning mechanism and a right side turning-around overturning mechanism are arranged in the safety cover. Air pressure sources are arranged on the top of the feeding mechanism and the top of the control machine box, and two welding guns are arranged on each fixing mechanism. Under the control of the PLC control unit and the motor speed regulator, the carrier jig is conveyed to the left side turnover mechanism and the right side turning turnover mechanism through the feeding mechanism and the feeding mechanism, then the three-axis moving mechanism drives the welding gun to conduct welding spot welding, and after welding is completed, the carrier returns to the previous working procedure through the backflow belt; through a mechanical structure and electrical control, manual participation is reduced in the operation process of the equipment, namely, the labor cost is reduced, the working efficiency is improved, and the purpose of automation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tin melting welding, in particular to a double-head welding machine. Background Art

[0002] The double-head welding machine can perform multi-angle welding operations on products synchronously according to design requirements. Traditional double-head welding machines usually require multiple people to cooperate, including processes such as adjusting the material position, welding angle, and starting the machine. All these require a large amount of manual participation and operation time, which is time-consuming and laborious, and has low efficiency; the operation speed and accuracy of people are limited, especially in mass production and the processing of complex products, which is likely to lead to an extended production cycle and fluctuations in product quality; for this reason, a double-head welding machine is proposed. Through mechanical structure and electrical control, the operation process of the equipment reduces manual participation, reduces labor costs, and improves work efficiency, achieving the purpose of automation. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a double-head welding machine for the above-mentioned existing problems. The utility model is controlled by a PLC control unit and a motor speed regulator. The carrier fixture is transported to the left flipping mechanism and the right turning and flipping mechanism through the feeding mechanism and the loading mechanism, and then the welding torch and the welding nozzle are driven by the three-axis moving mechanism and the fixing mechanism to perform spot welding on the product. After the welding is completed, the carrier returns to the previous process through the return belt; through the mechanical structure and electrical control, the operation process of the equipment reduces manual participation, that is, reduces labor costs, and improves work efficiency, achieving the purpose of automation. In order to achieve the above-mentioned utility model purpose, the technical scheme adopted by the utility model is as follows:

[0004] According to one aspect of the utility model, a double-head welding machine is provided, including a control chassis. A return belt is provided on the top of the control chassis. A safety cover is provided on the top of the control chassis. A touch screen and a plurality of buttons are provided on the safety cover, and an exhaust hood is provided on the top of the safety cover. Four temperature controllers are symmetrically provided on the top of the safety cover, and a warning light is provided at a corner on the top of the safety cover. An feeding mechanism, a loading mechanism, two fixing mechanisms, two three-axis moving mechanisms, four wire feeding mechanisms, a left flipping mechanism, and a right turning and flipping mechanism are provided inside the safety cover. The feeding mechanism, the left flipping mechanism, and the right turning and flipping mechanism are arranged in sequence from left to right. Both of the two three-axis moving mechanisms are located behind the left flipping mechanism and the right turning and flipping mechanism, and the loading mechanism is located in the gap between the two three-axis moving mechanisms, the left flipping mechanism, and the right turning and flipping mechanism. The fixing mechanism and the left wire feeding mechanism on the left are both arranged on the three-axis moving mechanism on the left, and the fixing mechanism and the right wire feeding machine on the right are both arranged on the three-axis moving mechanism on the right. A pneumatic source is provided on the top of the control chassis near one side of the feeding mechanism. Two welding torches are provided on each fixing mechanism.

[0005] Preferably, the feeding mechanism includes a feeding bracket disposed on the top of the control chassis. A feeding motor is provided on the feeding bracket, and a left blocking cylinder is provided above the same side of the feeding bracket. A feeding sensor and a discharging sensor are provided at the right end of the feeding bracket, and the feeding sensor and the discharging sensor are arranged from left to right, and a right blocking cylinder is provided below the same side.

[0006] Preferably, the loading mechanism includes a single-axis moving module disposed on the top of the control chassis. An up-and-down moving cylinder is provided on the single-axis moving module, and a left gripping cylinder is provided at the top of the up-and-down moving cylinder. A left leaning cylinder is provided at the left end of the left gripping cylinder. A right positioning cylinder is provided at the top of the up-and-down moving cylinder, and a right gripping cylinder is provided at the top of the up-and-down moving cylinder. A right leaning cylinder is provided above the right end of the right gripping cylinder.

[0007] Preferably, the left turning mechanism includes a turning bracket disposed on the top of the control chassis. A positioning groove 1 is provided at the top of the turning bracket. Pneumatic finger clamps 1 are provided on both the left and right sides of the positioning groove 1. A positioning plate 1 is provided at the top of the turning bracket. A turning cylinder 1 is provided inside the turning bracket.

[0008] Preferably, the right turning and flipping mechanism includes an adjusting bracket disposed on the top of the control chassis. A positioning groove 2 is provided at the top of the adjusting bracket. Pneumatic finger clamps 2 are provided at both ends of the positioning groove 2. An adjusting rod is provided inside the adjusting bracket, and a gear is provided on the adjusting rod. A rotating and turning cylinder is provided at the lower end of the adjusting bracket. A slide rail is provided at the lower end of the adjusting bracket, and a rack is provided on the slide rail. The output shaft of the rotating and turning cylinder is connected to the rack. A flipping cylinder 2 is provided in the middle of the adjusting bracket, and a movable rod is provided on the output shaft of the flipping cylinder 2. A guiding rod is provided at the upper end of the adjusting bracket, and a spiral sleeve is provided on the guiding rod. The movable rod meshes with the spiral groove on the spiral sleeve. A positioning plate 2 is provided at the top of the adjusting bracket.

[0009] Preferably, the three-axis moving mechanism includes a base disposed on the top of the control chassis. A left-and-right moving module is provided on the top of the base. A front-and-back moving module is provided on the left-and-right moving module, and an up-and-down moving module is provided on the front-and-back moving module.

[0010] Preferably, the fixing mechanism includes a connecting plate connected to the corresponding up-and-down moving module. Two fine-tuning members are symmetrically provided on the connecting plate, and a plurality of fine-tuning knobs are provided on the outer side wall of each fine-tuning member. A welding torch is provided at the front end of each fine-tuning member, and a welding nozzle is provided at the lower end of each welding torch. A solder feeding tube cooperating with the welding nozzle is provided on each welding torch.

[0011] Preferably, the wire feeding mechanism includes a wire feeding adjustment box arranged on the top of the up-and-down moving module. A solder feeding box is arranged on the top of the wire feeding adjustment box. An adjustment switch is arranged on the wire feeding adjustment box, and a reel is arranged at the rear end of the wire feeding adjustment box. A tin wire is arranged on the reel, and the tin wire passes through the solder feeding box and cooperates with the fixing mechanism.

[0012] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] For the double-head welding machine of the present utility model, controlled by the PLC control unit and the motor speed regulator, the carrier fixture is transported to the left flipping mechanism and the right turning and flipping mechanism through the feeding mechanism and the loading mechanism. Then, the welding torch and the welding nozzle are driven by the three-axis moving mechanism and the fixing mechanism to perform solder joint welding on the product. After the welding is completed, the carrier returns to the previous process through the return belt; through the mechanical structure and electrical control, the operation process of the equipment reduces the participation of manual labor, that is, reduces the labor cost and improves the work efficiency, achieving the purpose of automation. Description of the Drawings

[0014] Figure 1 is the three-dimensional view of the present utility model;

[0015] Figure 2 is the internal structure schematic diagram of the present utility model;

[0016] Figure 3 is the structure schematic diagram of the feeding mechanism of the present utility model;

[0017] Figure 4 is the structure schematic diagram of the loading mechanism of the present utility model;

[0018] Figure 5 is the front view structure schematic diagram of the left flipping mechanism of the present utility model;

[0019] Figure 6 is the rear view structure schematic diagram of the left flipping mechanism of the present utility model;

[0020] Figure 7 is the front view structure schematic diagram of the right turning and flipping mechanism of the present utility model;

[0021] Figure 8 is the rear view structure schematic diagram of the right turning and flipping mechanism of the present utility model;

[0022] Figure 9 is the structure schematic diagram of the three-axis moving mechanism of the present utility model;

[0023] Figure 10 is the structure schematic diagram of the fixing mechanism of the present utility model;

[0024] Figure 11It is a schematic structural diagram of the wire feeding mechanism of the present utility model;

[0025] In the attached drawings, 1. Control chassis;

[0026] 2. Feeding mechanism; 201. Feeding bracket; 202. Feeding motor; 203. Left blocking cylinder; 204. Feeding inductor; 205. Discharging inductor; 206. Right blocking cylinder;

[0027] 3. Loading mechanism; 301. Single-axis moving module; 302. Up and down moving cylinder; 303. Left sleeve-taking cylinder; 304. Left leaning cylinder; 305. Right positioning cylinder; 306. Right sleeve-taking cylinder; 307. Right leaning cylinder;

[0028] 4. Left flipping mechanism; 401. Flipping bracket; 402. Positioning groove 1; 403. Pneumatic finger clamp 1; 404. Positioning plate 1; 405. Flipping cylinder 1;

[0029] 5. Right turning and flipping mechanism; 501. Adjusting bracket; 502. Positioning groove 2; 503. Pneumatic finger clamp 2; 504. Gear; 505. Turning cylinder; 506. Slide rail; 507. Rack; 508. Flipping cylinder 2; 509. Movable rod; 510. Guide rod; 511. Spiral sleeve; 512. Positioning plate 2;

[0030] 6. Three-axis moving mechanism; 601. Base; 602. Left and right moving module; 603. Front and back moving module; 604. Up and down moving module;

[0031] 7. Fixing mechanism; 701. Connecting plate; 702. Fine-tuning part; 703. Fine-tuning knob; 704. Tin feeding pipe;

[0032] 8. Wire feeding mechanism; 801. Wire feeding adjustment box; 802. Tin feeding box; 803. Adjustment switch; 804. Reel; 805. Tin wire;

[0033] 9. Return belt; 10. Safety cover; 11. Touch screen; 12. Button; 13. Smoke exhaust hood; 14. Temperature controller; 15. Warning light; 16. Air pressure source; 17. Welding torch; 18. Welding tip. Detailed implementation manners

[0034] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the following preferred embodiments are cited with reference to the attached drawings to further explain the present utility model in detail. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the utility model, and these aspects of the present utility model can be implemented even without these specific details.

[0035] Please refer toFigures 1 to 11 , the present utility model provides a double - head welding machine, and the technical solution is as follows:

[0036] It includes a control chassis 1. A reflux belt 9 is provided on the top of the control chassis 1. A safety cover 10 is provided on the top of the control chassis 1. A touch screen 11 and multiple buttons 12 are provided on the safety cover 10. A smoke exhaust hood 13 is provided on the top of the safety cover 10. Four temperature controllers 14 are symmetrically provided on the top of the safety cover 10. A warning light 15 is provided at a corner on the top of the safety cover 10. An inlet mechanism 2, a loading mechanism 3, two fixing mechanisms 7, two three - axis moving mechanisms 6, four wire feeding mechanisms 8, a left - hand side flipping mechanism 4 and a right - hand side turning and flipping mechanism 5 are provided inside the safety cover 10. The inlet mechanism 2, the left - hand side flipping mechanism 4 and the right - hand side turning and flipping mechanism 5 are arranged in sequence from left to right. Both of the two three - axis moving mechanisms 6 are located behind the left - hand side flipping mechanism 4 and the right - hand side turning and flipping mechanism 5. The loading mechanism 3 is located in the gap between the two three - axis moving mechanisms 6 and the left - hand side flipping mechanism 4 and the right - hand side turning and flipping mechanism 5. The fixing mechanism 7 and the left - hand side wire feeding mechanism 8 on the left side are both arranged on the three - axis moving mechanism 6 on the left side. The fixing mechanism 7 and the right - hand side wire feeding machine on the right side are both arranged on the three - axis moving mechanism 6 on the right side. A pneumatic source 16 is provided on the top of the control chassis 1 near the inlet mechanism 2. Two welding torches 17 are provided on each fixing mechanism 7.

[0037] Multiple buttons 12 are provided on the safety cover 10, such as an emergency stop button 12, a reset button 12, a stop button 12, a start button 12, etc., for manually controlling the normal operation of the equipment. Electrical control electronic components, such as a PLC, a relay, an air switch, etc., are installed inside the control chassis 1; Adjusting casters for moving the equipment and adjusting the height of the equipment are provided at the lower end of the control chassis 1. A general installation plate for the equipment base is provided on the top, and a motor speed regulator and an equipment power switch are provided on the side.

[0038] After the equipment is powered on and ventilated, turn on the four temperature controllers 14. Simultaneously heat the corresponding four welding torches 17 through the four temperature controllers 14. After the temperature rise is stable, the loading fixture enters the safety cover 10 from the inlet mechanism 2. The loading mechanism 3 clamps the fixture and moves it towards the left - hand side flipping mechanism 4 and the right - hand side turning and flipping mechanism 5, and sends the fixture into them. After the left - hand side flipping mechanism 4 clamps the fixture, it flips forward by 90°. The loading mechanism 3 resets and returns to the standby position. The three - axis moving mechanism 6 on the left side moves the two welding torches 17 on the fixing mechanism 7 on the left side to the product welding points simultaneously. Start the left - hand side wire feeding mechanism 8 to send the solder wire 805 to the fixing mechanism 7. Subsequently, weld the product through the welding torch 17. After welding, the three - axis moving mechanism 6 on the left side resets and moves to lift the fixing mechanism 7 on the left side and return to the standby position. At the same time, the left - hand side flipping mechanism 4 resets to straighten the fixture to the standby position, and one cycle of the left - hand side welding action is completed;

[0039] After welding the product on the first carrier jig, when another jig is fed, the feeding mechanism 3 is started again to clamp the feeding jig, and at the same time clamp the jig on the left side of the product that has been welded on the left flip mechanism 4, and move to the right synchronously. The left flip mechanism 4 and the right U-turn flip mechanism 5 clamp the feeding jig at the same time, and the feeding mechanism 3 is reset to the standby point, the left flip mechanism 4 continues to flip 90°, and the right U-turn flip mechanism 5 rotates and flips 90° after turning around, and the two three-axis moving mechanisms 6 drive their respective welding guns 17 to move to the top of the corresponding welding point, and the four wire feeding mechanisms 8 are started to perform welding operations. After welding is completed, the two three-axis moving mechanisms 6 drive the corresponding welding guns 17 to reset and move to the standby position, and the left reversing mechanism and the right U-turn flip mechanism 5 reset to put the jig back to the standby point, and the entire welding cycle is completed; the loading jig that has completed welding enters the next step, and after the product is separated from the loading jig, the loading jig returns to the previous process through the reflux belt 9 for recycling.

[0040] The feeding mechanism 2 includes a feeding bracket 201 arranged on the top of the control chassis 1, and a feeding motor 202 is provided on the feeding bracket 201. A left blocking cylinder 203 is provided above the same side of the feeding bracket 201, and a feeding sensor 204 and a discharging sensor 205 are provided at the right end of the feeding bracket 201. The feeding sensor 204 and the discharging sensor 205 are arranged from left to right, and a right blocking cylinder 206 is provided below the same side.

[0041] The feed motor 202 starts to drive the belt to rotate, and the carrier jig drives the product from the previous process into the track. After the feed sensor 204 senses the presence of the jig, the feed motor 202 stops rotating and starts the left blocking cylinder 203 to block the jig. The jig is fed into place and waits for the loading mechanism 3 to transport the jig forward.

[0042] The feeding mechanism 3 includes a single-axis movable module 301 arranged on the top of the control chassis 1, and an up-and-down movable cylinder 302 is provided on the single-axis movable module 301, and a left-side sleeve cylinder 303 is provided on the top of the up-and-down movable cylinder 302, and a left-side biasing cylinder 304 is provided on the left end of the left-side sleeve cylinder 303, a right-side positioning cylinder 305 is provided on the top of the up-and-down movable cylinder 302, and a right-side sleeve cylinder 306 is provided on the top of the up-and-down movable cylinder 302, and a right-side biasing cylinder 307 is provided above the right end of the right-side sleeve cylinder 306.

[0043] When the jig enters the feeding mechanism 2 and waits, the left side sleeve cylinder 303 is started to sleeve the jig, and then the left side bias cylinder 304 is started to clamp the jig, and then the single-axis moving module 301 is started to send the jig to the right. After the jig is in place, the left side bias cylinder 304 releases and resets the jig, and at the same time, the up-and-down moving cylinder 302 is started, the mechanism is lifted, and then the left side sleeve cylinder 303 is reset, and then the single-axis moving module 301 is reset, the mechanism returns to the origin, and then the up-and-down moving cylinder 302 is reset, and the mechanism returns to the standby position;

[0044] When the next jig is fed, the left side taking cylinder 303, the right side positioning cylinder 305 and the right side taking cylinder 306 are started again to take the two jigs on the left and right sides at the same time, the jigs are clamped by the left side leaning cylinder 304 and the right side leaning cylinder 307, and the single-axis moving module 301 is started to move the two jigs to the right at the same time. After they are in place, the two jigs are released, all mechanisms are reset, and return to the initial standby position to wait for the next jig positioning and feeding.

[0045] The left flip mechanism 4 includes a flip bracket 401 arranged on the top of the control chassis 1, a positioning groove 402 is provided on the top of the flip bracket 401, pneumatic finger clamps 403 are provided on both sides of the positioning groove 402, a positioning plate 404 is provided on the top of the flip bracket 401, and a flip cylinder 405 is provided inside the flip bracket 401.

[0046] The carrier jig enters the positioning groove 402 through the feeding mechanism 3, and the starting finger clamps on both sides clamp the jig. After the feeding mechanism 3 is reset to the standby position, the flip cylinder 405 is started to flip the product on the jig 90° for positioning welding. There are 12 products on a jig. When all 12 products are welded, the flip cylinder 405 is reset, driving the jig to flip back and reset it. The two pneumatic finger clamps 403 loosen the jig, and the welding of the left product is completed.

[0047] The right-side U-turn flipping mechanism 5 includes an adjusting bracket 501 arranged on the top of the control chassis 1, a second positioning groove 502 is provided on the top of the adjusting bracket 501, and a pneumatic finger clamp 503 is provided on both the left and right ends of the second positioning groove 502, an adjusting rod is provided in the adjusting bracket 501, and a gear 504 is provided on the adjusting rod, a rotary U-turn cylinder 505 is provided at the lower end of the adjusting bracket 501, a slide rail 506 is provided at the lower end of the adjusting bracket 501, and a rack 507 is provided on the slide rail 506, the output shaft of the rotary U-turn cylinder 505 is connected to the rack 507, a second flipping cylinder 508 is provided in the middle of the adjusting bracket 501, and a movable rod 509 is provided on the output shaft of the second flipping cylinder 508, a guide rod 510 is provided at the upper end of the adjusting bracket 501, and a spiral sleeve 511 is provided on the guide rod 510, the movable rod 509 is meshed with the spiral groove on the spiral sleeve 511, and a second positioning plate 512 is provided on the top of the adjusting bracket 501.

[0048] After the product completes the left side welding, it enters the positioning groove 2 502 under the action of the feeding mechanism 3, and the two pneumatic finger clamps 2 503 clamp the fixture and push it forward through the gear 504 and the rack 507. At the same time, the turning cylinder 508 is started to rotate the entire mechanism 180°, and the fixture completes the turning. Then the turning cylinder 2 508 is started, and the movable rod 509 slides in the spiral groove in the spiral sleeve 511, driving the fixture to turn 90°, and the fixture completes the turning and flipping, and then the product welding points are automatically welded; after the welding of 12 products is completed, the flip cylinder 2 508 is reset to drive the fixture to turn back and straighten it, and then the rotating turning cylinder 505 is reset, the entire mechanism turns back 180° to return to the initial position, and the two pneumatic finger clamps 2 503 release the fixture, and the welding of the right product is completed.

[0049] The three-axis moving mechanism 6 includes a base 601 arranged on the top of the control chassis 1, and a left-right moving module 602 is provided on the top of the base 601, and a front-back moving module 603 is provided on the left-right moving module 602, and an up-down moving module 604 is provided on the front-back moving module 603; the fixing mechanism 7 includes a connecting plate 701 connected to the corresponding up-down moving module 604, and two fine-tuning parts 702 are symmetrically arranged on the connecting plate 701, and a plurality of fine-tuning knobs 703 are provided on the outer side wall of each fine-tuning part 702, and a welding gun 17 is provided at the front end of each of the fine-tuning parts 702, and a welding nozzle 18 is provided at the lower end of each welding gun 17, and a tin feeding tube 704 cooperating with the welding nozzle 18 is provided on each of the welding guns 17.

[0050] The temperature controller 14 controls the welding gun 17 to heat up, and the welding tip 18 heats up accordingly. During welding, the four wire feeding mechanisms 8 feed the tin wire 805 to the corresponding four welding tips 18 positions for welding.

[0051] The wire feeding mechanism 8 includes a wire feeding adjustment box 801 arranged on the top of the vertical movement module 604. A solder feeding box 802 is provided on the top of the wire feeding adjustment box 801. An adjustment switch 803 is arranged on the wire feeding adjustment box 801. A reel 804 is provided at the rear end of the wire feeding adjustment box 801. A solder wire 805 is arranged on the reel 804, and the solder wire 805 passes through the solder feeding box 802 and cooperates with the fixing mechanism 7.

[0052] When the wire feeding mechanism 8 is started, it is adjusted to a suitable speed through the adjustment switch 803. When welding, the reel 804 sends the solder wire 805 to the corresponding solder feeding pipe 704. The solder wire 805 contacts the soldering tip 18 in a high-temperature state to form liquid solder, and then contacts the product solder joint to dissolve the wire tail and terminal pin of the product, completing the soldering of the terminal pin.

[0053] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A double-head welding machine, characterized in that: include: A control box (1), wherein a reflow belt (9) is provided on the top of the control box (1), a safety cover (10) is provided on the top of the control box (1), a touch screen (11) and a plurality of buttons (12) are provided on the safety cover (10), a smoke exhaust cover (13) is provided on the top of the safety cover (10), four temperature controllers (14) are symmetrically provided on the top of the safety cover (10), and a warning light (15) is provided on a corner of the top of the safety cover (10), and a feeding mechanism (2), a loading mechanism (3), two fixing mechanisms (7), two three-axis moving mechanisms (6), four wire feeding mechanisms (8), a left flipping mechanism (4) and a right U-turn flipping mechanism (5) are provided in the safety cover (10), wherein the feeding mechanism (2), the left flipping mechanism (4) The two three-axis moving mechanisms (6) are arranged in sequence from left to right, the two three-axis moving mechanisms (6) are located behind the left flipping mechanism (4) and the right flipping mechanism (5), and the feeding mechanism (3) is located in the gap between the two three-axis moving mechanisms (6) and the left flipping mechanism (4) and the right flipping mechanism (5). The fixing mechanism (7) and the left wire feeding mechanism (8) located on the left are both arranged on the three-axis moving mechanism (6) on the left, and the fixing mechanism (7) and the right wire feeding mechanism (8) located on the right are both arranged on the three-axis moving mechanism (6) on the right. A gas pressure source (16) is provided on the top of the control box (1) near the feeding mechanism (2), and two welding guns (17) are provided on each of the fixing mechanisms (7).

2. A double-head welding machine according to claim 1, characterized in that: The feeding mechanism (2) comprises a feeding bracket (201) arranged on the top of the control box (1), a feeding motor (202) being arranged on the feeding bracket (201), a left blocking cylinder (203) being arranged above the same side of the feeding bracket (201), a feeding sensor (204) and a discharging sensor (205) being arranged at the right end of the feeding bracket (201), and the feeding sensor (204) and the discharging sensor (205) being arranged from left to right, and a right blocking cylinder (206) being arranged below the same side.

3. A double-head welding machine according to claim 1, characterized in that: The feeding mechanism (3) comprises a single-axis movable module (301) arranged on the top of the control box (1); an up-and-down movable cylinder (302) is arranged on the single-axis movable module (301); a left-side sleeve cylinder (303) is arranged on the top of the up-and-down movable cylinder (302); a left-side biasing cylinder (304) is arranged on the left end of the left-side sleeve cylinder (303); a right-side positioning cylinder (305) is arranged on the top of the up-and-down movable cylinder (302); a right-side sleeve cylinder (306) is arranged on the top of the up-and-down movable cylinder (302); and a right-side biasing cylinder (307) is arranged above the right end of the right-side sleeve cylinder (306).

4. A double-head welding machine according to claim 1, characterized in that: The left-side flipping mechanism (4) comprises a flipping bracket (401) arranged on the top of the control box (1); a positioning groove (402) is provided on the top of the flipping bracket (401); pneumatic finger clamps (403) are provided on both the left and right sides of the positioning groove (402); a positioning plate (404) is provided on the top of the flipping bracket (401); and a flipping cylinder (405) is provided inside the flipping bracket (401).

5. A double-head welding machine according to claim 1, characterized in that: The right turning mechanism (5) comprises an adjusting bracket (501) arranged on the top of the control box (1), the top of the adjusting bracket (501) is provided with a second positioning groove (502), the left and right ends of the second positioning groove (502) are provided with two pneumatic finger clamps (503), an adjusting rod is arranged inside the adjusting bracket (501), and a gear (504) is arranged on the adjusting rod, a rotating turning cylinder (505) is arranged at the lower end of the adjusting bracket (501), a slide rail (506) is arranged at the lower end of the adjusting bracket (501), and a gear (504) is arranged on the slide rail (506). The output shaft of the rotary turning cylinder (505) is connected to the rack (507); a second flip cylinder (508) is provided in the middle of the adjusting bracket (501); a movable rod (509) is provided on the output shaft of the second flip cylinder (508); a guide rod (510) is provided on the upper end of the adjusting bracket (501); a spiral sleeve (511) is provided on the guide rod (510); the movable rod (509) is meshed with a spiral groove on the spiral sleeve (511); and a second positioning plate (512) is provided on the top of the adjusting bracket (501).

6. A double-head welding machine according to claim 1, characterized in that: The three-axis moving mechanism (6) comprises a base (601) arranged on the top of the control box (1), a left-right moving module (602) is arranged on the top of the base (601), a front-back moving module (603) is arranged on the left-right moving module (602), and an up-down moving module (604) is arranged on the front-back moving module (603).

7. A double-head welding machine according to claim 1, characterized in that: The fixing mechanism (7) comprises a connecting plate (701) connected to the corresponding up and down moving module (604), two fine-tuning parts (702) are symmetrically arranged on the connecting plate (701), and a plurality of fine-tuning knobs (703) are arranged on the outer wall of each fine-tuning part (702), a welding gun (17) is arranged at the front end of each fine-tuning part (702), and a welding nozzle (18) is arranged at the lower end of each welding gun (17), and a tin feeding tube (704) cooperating with the welding nozzle (18) is arranged on each welding gun (17).

8. A double-head welding machine according to claim 6, characterized in that: The wire feeding mechanism (8) comprises a wire feeding regulating box (801) arranged on the top of the up-and-down moving module (604), a tin feeding box (802) is arranged on the top of the wire feeding regulating box (801), an adjusting switch (803) is arranged on the wire feeding regulating box (801), and a reel (804) is arranged at the rear end of the wire feeding regulating box (801), a tin wire (805) is arranged on the reel (804), and the tin wire (805) passes through the tin feeding box (802) and cooperates with the fixing mechanism (7).

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