Welding device for micro component assembly and welding system thereof

Abstract

The invention relates to the technical field of thermocompression welding, in particular to a welding device for assembling micro components and a welding system thereof.The device comprises a machine body, a heating table and a cooling table, the heating table and the cooling table alternately interact left and right, the heating table is connected with a moving seat through a lifting column, and the cooling table is slidably installed on an outer guide plate; the belt pulley drives the transmission belt, so that the upper coupling sleeve drives the cooling table to move horizontally, and the lower coupling sleeve drives the heating table to move horizontally through the moving seat; the V-shaped driving groove of the datum plate and the sliding column forced heating table descend to avoid when the platform intersects and ascend to reset after the platform intersects with the sliding column forced heating table; the positioning assembly comprises a longitudinal moving seat, a pressing strip and a supporting plate capable of rotating by 90 degrees, the pushing assembly enables a workpiece to be lifted away from the table top before the platform moves through chute linkage, and the supporting plate is automatically stored or supported. The system integration electric control unit cooperates with the driving motor, the electric push cylinder and the rotating motor, heating / cooling synchronous operation and full-automatic circulation are achieved, the cooling waiting time can be eliminated, and the productivity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing welding, in particular to a welding device for assembling micro components and a welding system thereof. Background Art

[0002] In the automotive parts manufacturing industry, the assembly and soldering of micro-components (such as sensors and chip modules) generally relies on reflow or hot press soldering processes using a single heating platform. Traditional soldering equipment typically consists of a single heating platform, which presents a significant workflow bottleneck: after soldering, the workpiece must cool naturally or through external forced cooling to a safe temperature on the heating platform (typically taking tens of seconds to several minutes) before operators can remove the finished product and place a new workpiece. This cooling wait time results in low equipment utilization, becoming a key factor limiting production efficiency.

[0003] Especially for micro components, this process mode has the following inherent defects: 1. It is difficult to accurately control the temperature of the passive cooling process of the workpiece on the high-temperature platform, which can easily cause micro solder joints to crack or components to be thermally damaged due to thermal stress, resulting in a decrease in the yield rate.

[0004] 2. Operators need to manually change materials in high-temperature areas, which poses a risk of burns, and the high-temperature environment accelerates equipment aging.

[0005] 3. Micro workpieces are prone to displacement due to vibration during platform movement or cooling. Traditional clamping mechanisms lack adaptive adjustment capabilities and require frequent manual correction. Summary of the Invention

[0006] The object of the present invention is to provide a welding device and a welding system for assembling micro components to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: A welding device for assembling micro components, comprising a body, a heating platform, and a cooling platform, wherein two sets of outer guide plates are provided on the front side of the body, and the cooling platform is limitedly slidably mounted on the outer guide plates; two sets of inner guide plates are provided between the two sets of outer guide plates, and a lifting column is welded to the lower end of the heating platform, the outer portion of the lifting column is movably connected to a movable seat, and the movable seat is limitedly slidably mounted on the inner guide plate; The heating stage and the cooling stage interact alternately left and right through a drive device, so that they move in opposite directions when they meet in the middle of the machine body; The driving device includes a pulley, a transmission belt and a linkage lifting mechanism. When the pulley rotates, the transmission belt synchronously drives the cooling platform to move horizontally, and the heating platform to move horizontally through the moving seat. The linkage lifting mechanism is used to force the heating platform to descend to avoid when the platforms intersect and to rise and reset after the intersection. The heating station and the cooling station are both provided with positioning assemblies, the positioning assembly comprises a longitudinal moving seat, a pressing strip and a supporting plate, the longitudinal moving seat is limitingly and slidingly installed on the machine body and is driven to lift by a pushing assembly, the pressing strip extends into the longitudinal moving seat and is welded with a pushing rack, adjacent pushing racks are connected through a conversion wheel; The supporting plate is driven to rotate by 90 degrees in positive and negative directions through a linkage assembly, the supporting plate is accommodated in the pressing strip when rotating counterclockwise, and supports the bottom of the workpiece when rotating clockwise.

[0008] Preferably, the belt pulleys are provided with two groups and are both rotatably installed in the machine body through a central shaft, and the transmission belt is sleeved on the outside of the belt pulleys; The transmission belt is fixedly welded with an upper connecting sleeve and a lower connecting sleeve, the upper connecting sleeve is fixedly welded with the cooling station, and the lower connecting sleeve penetrates through the outer guide plate and is fixedly connected with the moving seat. Preferably, the linkage lifting mechanism comprises a reference plate, a sliding column and a driving groove; The reference plate is arranged between the two groups of inner guide plates, the reference plate is provided with a driving groove composed of a straight groove and a V-shaped groove, the sliding column is slidingly installed in the driving groove, and the lifting column is fixedly sleeved with the sliding column at the lower end; Preferably, the driving device further comprises a reference wheel, a left butt joint wheel, a right butt joint wheel, a translation seat, an electric push cylinder and a driving motor; The translation seat is limitingly and slidingly installed in the machine body, the piston rod of the electric push cylinder is connected with a contact block on one side of the translation seat, and the translation seat is rotatably installed with the left butt joint wheel and the right butt joint wheel on the other side. Preferably, the reference wheel is coaxially fixed with one group of belt pulleys, and the left butt joint wheel and the right butt joint wheel alternately engage the reference wheel; The output shaft of the driving motor is connected with a driving gear, the driving gear engages a driven gear, the driven gear is coaxially fixed with the left butt joint wheel, and the right butt joint wheel is coaxially fixed with the driving gear.

[0009] Preferably, the pushing assembly comprises a driven vertical block and a pushing rod; The driven vertical block is fixed on the upper end face of the translation seat, and the side wall of the longitudinal moving seat is provided with a first inclined groove; One end of the pushing rod is connected with the driven vertical block, and the other end is inserted into the first inclined groove, when the translation seat moves left and right, the pushing rod forcibly lifts the longitudinal moving seat through the first inclined groove.

[0010] Preferably, the linkage assembly comprises a longitudinal pushing plate, a door-shaped frame and a rotating wheel; The rotating wheel is fixed on the upper end of the rotating shaft, and the lower end of the rotating shaft is welded with the supporting plate; the door-shaped frame is slidingly installed in the pushing rack, the upper end of the door-shaped frame is connected with a translation rack, and the translation rack engages the rotating wheel; The door-shaped frame is provided with a second inclined groove, and a cylindrical pin fixed to the lower pressing plate is inserted into the second inclined groove.

[0011] Preferably, the lower pressing plate is movably sleeved on the transverse guide rod, both ends of the transverse guide rod are connected to the longitudinal push plate, and the longitudinal push plate is slidably installed in the longitudinal movable seat; A return spring is provided at the lower end of the longitudinal push plate, and the upper end extends out of the longitudinal moving seat and contacts the rectangular slotted top wall of the machine body; When the longitudinal moving seat rises, the longitudinal push plate is pressed down by the rectangular slotted top wall, and the lower pressure plate is driven downward by the transverse guide rod.

[0012] Preferably, the left docking wheel and the right docking wheel rotate in opposite directions; The electric push cylinder pushes the translation seat to make the left docking wheel or the right docking wheel engage with the reference wheel, thereby realizing the forward and reverse switching of the pulley and driving the heating table and the cooling table to move synchronously in opposite directions.

[0013] A welding system for a welding device used for assembling micro components, comprising the welding device, a cooling system and an electronic control unit; The cooling system is integrated into or at the bottom of the cooling table and is used to actively cool the workpieces that move to the material change position; The electronic control unit is connected to the drive motor, electric push cylinder and the rotary motor of the positioning assembly respectively to control the following coordinated operations: The start and stop and speed of the drive motor; The extension and retraction timing of the electric push cylinder switches the left or right docking wheel to engage the reference wheel; The rotary motor drives the conversion wheel to rotate forward and reverse, and then drives the rack to link the pressing bar to rise and fall and the support plate to rotate; The welding system realizes the automatic cycle of alternating displacement of the heating table and the cooling table, pressing and releasing the workpiece, and starting and stopping the cooling through programming of the electronic control unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes a mutually interactive heating and cooling stage, physically isolating and synchronizing their operation. Completed welds are immediately transferred to the cooling stage for active cooling, allowing the operator to safely replace them with new workpieces. The heating stage heats the next batch of workpieces without waiting for them to cool, eliminating the time-consuming cooling wait phase in traditional single-stage processes. This enables truly continuous production, significantly improving equipment utilization and output per unit time.

[0015] 2. Through the design of a linkage mechanism between the drive trough, slide column, and lifting column, the heating platform is forced to automatically lower to clear the cooling platform when the platforms intersect, and quickly resets after the intersection. This mechanical forced avoidance mechanism ensures absolutely no collision risk during high-speed switching between the two platforms. Its compact structure and reliable operation significantly enhance the long-term stability of the equipment.

[0016] 3. In this invention, the holding bar and the rotatable support plate work together. Before the platform moves, the longitudinally movable base lifts the workpiece off the table, while the support plate rotates downward 90 degrees to provide bottom support. Once the platform is in place, the holding bar applies lateral pressure to secure the workpiece, while the support plate automatically retracts to prevent interference. This dynamic positioning system ensures that miniature workpieces remain free of deflection and damage during high-speed movement and switching, significantly improving welding accuracy and yield.

[0017] 4. In this invention, operators only change workpieces in a safe temperature zone on the cooling table, completely avoiding the risk of high-temperature burns. Automated positioning and platform switching mechanisms reduce manual intervention. Material changes occur in parallel with the welding / cooling process, shortening the cycle time per piece and reducing labor intensity, achieving a dual optimization of safety and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a three-dimensional schematic diagram from another perspective of the structure of the present invention.

[0020] Figure 3 Schematic diagram of the connection between the heating stage, cooling stage and driving device of the present invention.

[0021] Figure 4 It is a three-dimensional schematic diagram of the reference plate, heating stage, cooling stage and driving device of the present invention.

[0022] Figure 5 It is a schematic diagram of the connection between the heating platform, the movable base and the reference plate of the present invention.

[0023] Figure 6 It is a three-dimensional schematic diagram of the positioning component, heating stage, cooling stage and driving device.

[0024] Figure 7 Schematic diagram of the positioning component, pushing component and driving device.

[0025] Figure 8 It is a three-dimensional schematic diagram of the driving device of the present invention.

[0026] Figure 9 It is a connection diagram of the pulley, the reference wheel, the left docking wheel, the driven wheel, the driving gear and the right docking wheel.

[0027] Figure 10 It is a three-dimensional schematic diagram of the positioning component in the present invention.

[0028] Figure 11 It is a schematic cross-sectional view of the longitudinal movable seat in the present invention.

[0029] Figure 12Schematic diagram of the connection of linkage components in the present invention.

[0030] Figure 13 Schematic diagram of the explosion of the linkage assembly in the present invention.

[0031] In the figure: 1. Machine body; 2. Outer guide plate; 3. Cooling table; 4. Inner guide plate; 5. Heating table; 6. Guide rod; 7. Moving seat; 8. Lifting column; 9. Sliding column; 10. Driving groove; 11. Reference plate; 12. Upper connecting sleeve; 13. Lower connecting sleeve; 14. Transmission belt; 15. Pulley; 16. Reference wheel; 17. Left docking wheel; 18. Driven wheel; 19. Driving gear; 20. Right docking wheel; 21. Driving motor; 22. Translation 23. Contact block; 24. Electric push cylinder; 25. Driven vertical block; 26. Toggle rod; 27. First inclined slot; 28. Longitudinal moving seat; 29. ​​Pressure bar; 30. Push rack; 31. Conversion wheel; 32. Longitudinal push plate; 33. Return spring; 34. Transverse guide rod; 35. Lower pressure plate; 36. Cylindrical pin; 37. Second inclined slot; 38. Door frame; 39. Translation rack; 40. Rotating wheel; 41. Rotating axis; 42. Support plate. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figures 1 to 13The present invention provides a technical solution: a welding device for assembling micro components, including a body 1, a cooling table 3 and a heating table 5. Two groups of outer guide plates 2 are provided on the front side of the body 1. The cooling table 3 is limited and slidably installed on the outer guide plates 2. Two groups of inner guide plates 4 are provided between the two groups of outer guide plates 2. A lifting column 8 is welded and fixed to the lower end of the heating table 5. The outer part of the lifting column 8 is movably sleeved with a moving seat 7. The moving seat 7 is limited and slidably installed on the inner guide plate 4. The cooling table 3 and the heating table 5 are driven by a driving device to perform alternating left and right interactions; both the heating table 5 and the cooling table 3 are provided with a positioning assembly for fixing the workpiece; the positioning assembly includes two groups of pressure strips 29 and a longitudinal moving seat 28. The longitudinal moving seat 28 is limited and slidably installed on the body 1 The push assembly drives the press bar 29 to move up and down in a straight line. The press bar 29 extends into the longitudinal moving seat 28 and is fixedly welded with a push rack 30. Adjacent push racks 30 are connected by a conversion wheel 31. The conversion wheel 31 is coaxially welded with the drive shaft, and the drive shaft is driven to rotate by a rotating motor. A support plate 42 is provided at the bottom of the Meizu press bar 29. The support plate 42 is driven by the linkage assembly to rotate 90° forward and reverse. When the support plate 42 rotates 90° clockwise, it can play the role of bottom support and limit for the workpiece. When the support plate 42 rotates 90° counterclockwise, it can be completely stored in the press bar 29. The present invention can perform continuous operation and eliminate the cooling time by designing the alternating left and right interactive cooling table 3 and heating table 5. When the heating table 5 is performing heating-assisted welding, the cooling table 3 can simultaneously quickly and actively cool the previous batch of workpieces that have been welded. At the same time, the operator can safely remove the cooled workpieces and place new workpieces to be welded. When the heating platform 5 completes welding, the heating platform 5 can quickly heat a new batch of workpieces, and the cooling platform starts to cool the newly welded workpieces. This cycle is repeated, greatly shortening the waiting time and effectively improving production capacity.

[0034] like Figure 2-5As shown, the driving device includes an upper connecting sleeve 12, a lower connecting sleeve 13, a transmission belt 14 and a pulley 15. The pulley 15 is provided with two groups, both of which are rotatably mounted in the machine body 1 through a central axis. The two groups of pulleys 15 are commonly sleeved with a transmission belt 14 on the outside. The upper and lower ends of the transmission belt 14 are fixedly sleeved with the upper connecting sleeve 12 and the lower connecting sleeve 13 in sequence. The upper connecting sleeve 12 is fixedly welded to the cooling table 3 by screws. The lower connecting sleeve 13 passes through the outer guide plate 2 and is fixedly welded to the movable seat 7 by screws. A guide rod 6 is inserted through the four corners of the movable seat 7. The upper end of the guide rod 6 is welded and fixed to the lower end surface of the heating table 5. A reference plate 11 is provided between the two groups of inner guide plates 4. A driving groove 10 is opened on the reference plate. The driving groove 10 consists of straight grooves at the left and right ends and a V-shaped groove in the middle. A sliding column 9 is slidably installed in the driving groove 10, and the lower end of the lifting column 8 is fixedly sleeved on the outside of the sliding column 9. When the two sets of pulleys 15 rotate clockwise synchronously, the upper coupling sleeve 12 and the lower coupling sleeve 13 on the transmission belt 14 perform linear motion to the right and left in turn. The upper coupling sleeve 12 directly acts on the cooling table 3, so that the cooling table 3 is forced to move from left to right, while the lower coupling sleeve 13 indirectly acts on the heating table 5 through the moving seat 7. In the process of the moving seat 7 driving the lifting column 8 and the heating table 5 to move from right to left, the sliding column 9 at the bottom of the lifting column 8 moves up and down under the push of the driving groove 10, so that the heating table 5 moves downward to avoid the cooling table 3 during the process of moving to the left, and then moves back to the left after the intersection with the cooling table 3 is completed. It moves up quickly to continue heating the workpiece on the left; similarly, when the two sets of pulleys 15 rotate counterclockwise synchronously, the upper connecting sleeve 12 and the lower connecting sleeve 13 on the transmission belt 14 move linearly to the left and right in turn. At this time, the cooling table 3 is forced to move from right to left, and the moving seat 7 drives the lifting column 8 and the heating table 5 to move from right to right. The sliding column 9 at the bottom of the lifting column 8 moves up and down under the push of the driving groove 10, so that the heating table 5 moves downward again to avoid the cooling table 3 during the right movement, and then quickly moves up to continue heating the workpiece on the right after the intersection with the cooling table 3 is completed.

[0035] like Figure 2 、 Figure 7-9As shown, the driving device further comprises a reference wheel 16, a left butt joint wheel 17, a driven wheel 18, a driving gear 19, a right butt joint wheel 20, a driving motor 21, a translation seat 22, a contact block 23 and an electric push cylinder 24, the translation seat 22 is limitingly and slidingly installed in the machine body 1, the contact block 23 is fixedly bonded on one side of the translation seat 22, the piston rod of the electric push cylinder 24 outwardly extends and is connected to the contact block 23, the left butt joint wheel 17 and the right butt joint wheel 20 are limitingly and rotatably installed on the other side of the translation seat 22, the reference wheel 16 is coaxially welded and fixed with a group of belt pulleys 15, the left butt joint wheel 17 and the right butt joint wheel 20 are alternately engaged with the reference wheel 16, the driven wheel 18 is coaxially welded with the left butt joint wheel 17, the driving gear 19 is coaxially welded with the output shaft of the driving motor 21 and the right butt joint wheel 20 respectively, the driving gear 19 is engagedly connected with the driven wheel 18, and thus the turning directions of the left butt joint wheel 17 and the right butt joint wheel 20 are opposite; in use, the electric push cylinder 24 pushes the translation seat 22 to move leftward and rightward by acting on the contact block 23, so that the left butt joint wheel 17 and the right butt joint wheel 20 are alternately engaged with the reference wheel 16, so as to drive the reference wheel 16 to make the belt pulleys 15 rotate forward and reversely.

[0036] As shown in the figure, Figure 5-6 The pushing assembly comprises a driven vertical block 25 and a pushing rod 26, the driven vertical block 25 is welded and fixed on the upper end face of the translation seat 22, two groups of first inclined grooves 27 which are parallel to each other are arranged on the side wall of the longitudinal moving seat 28, one end of the pushing rod 26 is connected to the driven vertical block 25, and the other end of the pushing rod 26 is inserted into the first inclined groove 27; when the translation seat 22 drives the driven vertical block 25 and the pushing rod 26 to move rightward together, the pushing rod 26 acts on the first inclined groove 27, so that the longitudinal moving seat 28 is forced to move downward, when the translation seat 22 drives the driven vertical block 25 and the pushing rod 26 to move leftward together, the pushing rod 26 again acts on the first inclined groove 27, so that the longitudinal moving seat 28 is forced to move upward. Through the design of the driven vertical block 25, the pushing rod 26 and the first inclined groove 27, the cooling table 3 and the heating table 5 are moved, the pressing strip 29 on the longitudinal moving seat 28 first drives the workpiece to move upward and away from the platform, so as to avoid the deviation of the workpiece caused by the movement of the platform, and the supporting plate 42 is timely actuated to assist in supporting the workpiece, so as to ensure the stability of the workpiece.

[0037] As shown in the figure, Figure 10-13As shown, the side wall of the machine body 1 is provided with a rectangular slot for accommodating the longitudinal moving seat 28, and the linkage assembly includes a longitudinal push plate 32, a return spring 33, a transverse guide rod 34, a lower pressure plate 35, a cylindrical pin 36, a door frame 38, a translation rack 39, a rotating wheel 40 and a rotating shaft 41. One end of the rotating shaft 41 is fixedly welded to the upper end of the support plate 42, and the other end of the rotating shaft 41 is fixedly sleeved with the rotating wheel 40. The upper end of the rotating wheel 40 is meshed with the translation rack 39, and the upper end of the translation rack 39 is connected to the door frame 38. The door frame 38 is limited and slidably installed on the push plate 42. Inside the movable rack 30, a second oblique slot 37 is opened on the door frame 38, and a cylindrical pin 36 is inserted in the second oblique slot 37. The cylindrical pin 36 is fixedly bonded to the lower pressure plate 35. The upper end of the lower pressure plate 35 extends out to push the rack 30 and is movably sleeved on the transverse guide rod 34. Both ends of the transverse guide rod 34 are connected to a group of longitudinal push plates 32. The longitudinal push plates 32 are limitedly slidably installed in the longitudinal moving seat 28. The lower end of the longitudinal push plate 32 is provided with a return spring 33. The upper end of the longitudinal push plate 32 extends out of the longitudinal moving seat 28 and is connected to the top wall of the rectangular slot.

[0038] When the longitudinal moving seat 28 moves upward, the longitudinal push plate 32 contacts the top wall of the rectangular slot, thereby squeezing the reset spring 33 downward. The longitudinal push plate 32 acts on the transverse guide rod 34, so that the transverse guide rod 34 drives the lower pressure plate 35 to move downward. The cylindrical pin 36 on the lower pressure plate 35 acts on the second inclined groove 37, so that the portal frame 38 is forced to drive the translation rack 39 to move in the direction away from the conversion wheel 31. The translation rack 39 acts on the rotating wheel 40, so that the rotating shaft 41 drives the support plate 42 to rotate downward 90 degrees and support the workpiece.

[0039] In the present invention, the heating table 5 and the cooling table 3 move horizontally in opposite directions along the outer guide plate 2 / inner guide plate 4 under the control of the drive device. When the heating table 5 moves to the left for welding, the cooling table 3 moves to the right for cooling; and vice versa. When the two intersect in the middle of the machine body 1, the heating table 5 automatically descends and evades through the lifting and avoiding mechanism, and resets after the intersection, realizing a continuous production cycle: in the heating stage, the heating table 5 moves to the workpiece position, and the positioning component fixes the workpiece for welding; in the switching stage, the drive device pulls the double platform to move in the opposite direction, and at the same time the heating table 5 descends and avoids the cooling table 3; in the cooling stage, the welded workpiece is moved out with the cooling table 3, the active cooling system is activated, and the operator can safely replace the workpiece on the cooling table 3; in the reset stage, when the cooling table 3 moves back, the heating table 5 resets and rises to heat the new workpiece, forming a closed loop. The precise positioning of the workpiece is achieved by the pressure bar 29 pressing / releasing the workpiece through the longitudinal moving seat 28, and the linkage component drives the support plate 42 to rotate 90° forward and backward, holding the workpiece before pressing to prevent displacement when the platform moves. The drive and switching control is carried out by the electric push cylinder 24 pushing the translation seat 22, so that the left / right docking wheel 20 alternately engages the reference wheel 16, realizing the forward and reverse rotation of the pulley 15; when the translation seat 22 moves, the longitudinal moving seat 28 is forced to rise and fall through the toggle rod 26 and the first inclined groove 27 to ensure that the workpiece is lifted off the platform before moving.

[0040] The present invention also provides a welding system for welding a micro-component assembly device, comprising a welding device, a cooling system and an electronic control unit; The cooling system is integrated into or at the bottom of the cooling table 3 and is used to actively cool the workpieces that move to the material change position; The electronic control unit is connected to the drive motor 21, the electric push cylinder 24 and the rotary motor of the positioning assembly to control the following coordinated operations: Start, stop and speed of the drive motor 21; The extension and retraction timing of the electric push cylinder 24 switches the left docking wheel 17 or the right docking wheel 20 to engage the reference wheel 16; The rotary motor drives the conversion wheel 31 to rotate forward and reverse, and then drives the rack 30 to link the pressing bar 29 to rise and fall and the support plate 42 to rotate; The welding system realizes the automatic cycle of alternating displacement of the heating table 5 and the cooling table 3, pressing and releasing the workpiece, and starting and stopping the cooling through programming of the electronic control unit.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for assembling micro components, comprising a body, a heating stage, and a cooling stage, characterized in that: The front side of the machine body is provided with two sets of outer guide plates, and the cooling table is limitedly slidably mounted on the outer guide plates; two sets of inner guide plates are provided between the two sets of outer guide plates, and a lifting column is welded to the lower end of the heating table, and the outer portion of the lifting column is movably sleeved with a moving seat, and the moving seat is limitedly slidably mounted on the inner guide plates; The heating stage and the cooling stage interact alternately left and right through a drive device, so that they move in opposite directions when they meet in the middle of the machine body; The driving device includes a pulley, a transmission belt and a linkage lifting mechanism. When the pulley rotates, the transmission belt synchronously drives the cooling platform to move horizontally, and the heating platform to move horizontally through the moving seat. The linkage lifting mechanism is used to force the heating platform to descend to avoid when the platforms intersect and to rise and reset after the intersection. Both the heating table and the cooling table are equipped with positioning components, which include a longitudinal moving seat, a pressure bar and a support plate. The longitudinal moving seat is slidingly mounted on the machine body and is driven up and down by the pushing assembly. The pressure bar extends into the longitudinal moving seat and is welded to the pushing rack. Adjacent pushing racks are connected by a conversion wheel. The support plate is driven by the linkage assembly to rotate 90 degrees forward and backward. The support plate is stored in the pressure strip when it rotates counterclockwise, and supports the bottom of the workpiece when it rotates clockwise.

2. A welding device for assembling micro components according to claim 1, characterized in that: There are two sets of pulleys and both are rotatably mounted in the machine body through the central axis, and the transmission belt is sleeved on the outside of the pulleys; An upper connecting sleeve and a lower connecting sleeve are fixedly connected to the transmission belt. The upper connecting sleeve is fixedly connected to the cooling platform, and the lower connecting sleeve passes through the outer guide plate and is fixedly connected to the moving seat.

3. A welding device for assembling micro components according to claim 2, characterized in that: The linkage lifting mechanism includes a reference plate, a sliding column and a driving groove; The reference plate is arranged between the two sets of inner guide plates. A driving groove consisting of a straight groove and a V-shaped groove is provided on the reference plate. The slide column is slidably installed in the driving groove. The lower end of the lifting column is fixedly sleeved with the slide column.

4. A welding device for assembling micro components according to claim 3, characterized in that: The driving device also includes a reference wheel, a left docking wheel, a right docking wheel, a translation seat, an electric push cylinder and a driving motor; The translation seat is limitedly slidably installed in the machine body, the piston rod of the electric push cylinder is connected to the contact block on one side of the translation seat, and the left docking wheel and the right docking wheel are rotatably installed on the other side of the translation seat.

5. A welding device for assembling micro components according to claim 4, characterized in that: The reference wheel is coaxially fixed with a set of pulleys, and the left docking wheel and the right docking wheel alternately engage the reference wheel; The output shaft of the driving motor is connected to the driving gear, the driving gear meshes with the driven wheel, the driven wheel is coaxially fixed with the left docking wheel, and the right docking wheel is coaxially fixed with the driving gear.

6. A welding device for assembling micro components according to claim 5, characterized in that: The pushing assembly includes a driven vertical block and a toggle rod; The driven vertical block is fixed to the upper end surface of the translation seat, and the side wall of the longitudinal movement seat is provided with a first inclined groove; One end of the toggle rod is connected to the driven vertical block, and the other end is inserted into the first oblique slot. When the translation seat moves left and right, the toggle rod forces the longitudinal movement seat to move up and down through the first oblique slot.

7. A welding device for assembling micro components according to claim 6, characterized in that: The linkage assembly includes a longitudinal push plate, a door frame and a rotating wheel; The rotating wheel is fixed to the upper end of the rotating shaft, and a support plate is welded to the lower end of the rotating shaft; the portal frame is slidably installed in the pushing rack, and the upper end of the portal frame is connected to the translation rack, which engages the rotating wheel; The portal frame is provided with a second oblique slot, and a cylindrical pin fixed to the lower pressing plate is inserted into the second oblique slot.

8. A welding device for assembling micro components according to claim 7, characterized in that: The lower pressure plate is movably sleeved on the transverse guide rod, and both ends of the transverse guide rod are connected to the longitudinal push plate, which is slidably installed in the longitudinal movable seat; A return spring is provided at the lower end of the longitudinal push plate, and the upper end extends out of the longitudinal moving seat and contacts the rectangular slotted top wall of the machine body; When the longitudinal moving seat rises, the longitudinal push plate is pressed down by the rectangular slotted top wall, and the lower pressure plate is driven downward by the transverse guide rod.

9. A welding device for assembling micro components according to claim 8, characterized in that: The left docking wheel and the right docking wheel rotate in opposite directions; The electric push cylinder pushes the translation seat to make the left docking wheel or the right docking wheel engage with the reference wheel, thereby realizing the forward and reverse switching of the pulley and driving the heating table and the cooling table to move synchronously in opposite directions.

10. A welding system for the welding device for assembling micro components according to claim 9, characterized in that: It includes the welding device, cooling system and electronic control unit; The cooling system is integrated into or at the bottom of the cooling table and is used to actively cool the workpieces that move to the material change position; The electronic control unit is connected to the drive motor, electric push cylinder and the rotary motor of the positioning assembly respectively to control the following coordinated operations: The start and stop and speed of the drive motor; The extension and retraction timing of the electric push cylinder switches the left or right docking wheel to engage the reference wheel; The rotary motor drives the conversion wheel to rotate forward and reverse, and then drives the rack to link the pressing bar to rise and fall and the support plate to rotate; The welding system realizes the automatic cycle of alternating displacement of the heating table and the cooling table, pressing and releasing the workpiece, and starting and stopping the cooling through programming of the electronic control unit.

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