Vacuum welding equipment for vacuum cup and welding process

Abstract

The application discloses a vacuum cup vacuum welding device and a welding process, which comprises a vacuum cup for welding, a vacuum box, an inner shell and an outer shell and a bottom plate positioned and placed in the vacuum box, a light-transmitting piece arranged on the vacuum box, a corresponding position of the light-transmitting piece being a position point where the inner shell and the outer shell and the bottom plate are combined, a flow line, a laser welding gun arranged on the flow line, the vacuum box being arranged on the flow line and being driven to flow by the flow line, and the laser beam emitted by the laser welding gun penetrating the light-transmitting piece to perform laser welding on the combined position of the inner shell and the outer shell and the bottom plate. The vacuum cup is placed in the independent vacuum box, the laser welding gun welds the gap at the combined position through the light-transmitting piece, the large vacuum chamber is avoided, the equipment cost is reduced, the flow line can be used to work, the flow is quickly carried out, the welding speed is improved, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of vacuum laser welding technology, and in particular to vacuum welding equipment and welding process for thermos cups. Background Technology

[0002] A thermos cup consists of an inner liner and an outer shell, which are welded together. The thermos cup's heat preservation effect is ensured by the vacuum level of the cavity between the outer shell and the inner liner. Therefore, when sealing the cavity, it is necessary to evacuate the cavity to a vacuum.

[0003] Existing thermos cup welding devices, such as those described in publication number CN112846497A, involve welding in a large hollow chamber. One or more cups are welded within the welding chamber, and after welding, they are transferred. During the transfer process, the vacuum chamber needs to be opened, so a vacuum needs to be drawn for each welding operation, thus preventing continuous vacuum welding. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing vacuum welding equipment and welding process for thermos cups.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vacuum welding equipment for insulated cups, comprising an insulated cup for welding, the insulated cup including an inner and outer shell and a bottom plate, a vacuum chamber, the inner and outer shells and the bottom plate being positioned inside the vacuum chamber, a light-transmitting element being configured on the vacuum chamber, the light-transmitting element corresponding to the joint point of the inner and outer shells and the bottom plate, a production line, a laser welding gun being configured on the production line, the vacuum chamber being configured on the production line and being driven by the production line to move, when it moves to the laser welding gun, the laser beam emitted by the laser welding gun passes through the light-transmitting element to perform laser welding on the joint point of the inner and outer shells and the bottom plate.

[0006] Its beneficial effect is that by placing the thermos cup in an independent vacuum chamber, the laser welding gun welds the gap at the joint through the light-transmitting part, thereby reducing the space required for vacuum welding, reducing energy consumption, and enabling rapid circulation to increase welding speed.

[0007] In the above scheme, preferably, the vacuum chamber is equipped with an evacuation end, which is used to connect with a vacuum component to evacuate the vacuum chamber to a vacuum. The vacuum chamber is equipped with a support component, a first lifting component, a second lifting component, and a transmission assembly. The support component is used to position and place the inner and outer shells. The first lifting component is used to descend and fit onto the inner and outer shells during the evacuation process. The second lifting component is used to position and place the base plate, and after evacuation, it is pushed upward to combine the base plate with the bottom of the inner and outer shells. The transmission assembly is used to rotate the inner and outer shells and the base plate synchronously, so that the entire circle of welding is completed when the laser welding gun is welding.

[0008] In the above scheme, preferably, the support member includes an elastic telescopic member, the upper end of which is provided with a positioning groove for positioning and supporting the inner and outer shells, and the lower end is provided with a first inclined surface. The second lifting member is provided with a second inclined surface. When the second lifting member rises, the second inclined surface touches the first inclined surface, causing the elastic telescopic member to move away from the bottom of the inner and outer shells.

[0009] In the above scheme, preferably, the first lifting component includes a piston tube and a piston rod. The piston rod guides the piston to slide inside the piston tube, and a gas storage chamber is opened at the bottom end of the piston tube. A cover is provided at the front end of the piston rod. During the process of the vacuum box being evacuated to a vacuum, the gas pressure in the gas storage chamber pushes the piston rod down, so that the cover is fitted onto the inner and outer shells.

[0010] In the above scheme, preferably, the cover is provided with a rubber layer, which elastically fastens the inner and outer shells when the cover is fitted onto the inner and outer shells.

[0011] In the above scheme, preferably, the second lifting component includes a base frame and a lifting frame. The base frame is used to position and place the base plate, and the base frame is rotatably arranged inside the lifting frame. The lifting frame is slidably arranged on the support member for vertical guidance. The second inclined surface is arranged on the lifting frame. When the lifting frame rises, it pushes the base plate upward so that it is connected to the bottom of the inner and outer shells.

[0012] In the above scheme, preferably, the second lifting component also includes a transition component. The transition component is guided and slidably disposed on the bottom plate of the vacuum chamber, and a wheel is disposed on the support component. One end of a pull rope is connected to the lifting frame, and the other end is connected to the transition component. The transition component moves back and forth, causing the support component to move back and forth.

[0013] In the above scheme, preferably, the production line is equipped with a positioning and pushing device, which includes a pushing component and a positioning component. The positioning component is rotatably positioned on the frame of the production line to position and block the vacuum box on the production line. The pushing component is used to position and push the vacuum box to the laser welding gun. A first magnetic suction component is provided on the transition component, and a second magnetic component is provided on the production line. During the process of positioning and pushing the vacuum box to the laser welding gun, the first magnetic suction component and the second magnetic component are magnetically connected, which drives the transition component to move and causes the lifting frame to rise.

[0014] In the above scheme, preferably, the front end face of the vacuum chamber is provided with a concave cavity, and the light-transmitting element is disposed on the bottom surface of the concave cavity. The light-transmitting element is made of transparent quartz glass, so as to enable the laser to pass through efficiently and act on the welding point inside the vacuum chamber.

[0015] Vacuum welding process for thermos cups:

[0016] S1: Position the inner and outer shells and base plate inside the vacuum chamber using a robotic arm or manually, and then seal the vacuum chamber.

[0017] S2: The production line transfers the vacuum chamber to the vacuum station, where the vacuum chamber is evacuated to a vacuum.

[0018] S3: The assembly line transfers the vacuum chamber to the welding station, where the inner and outer shells and the base plate are joined together during positioning and locking.

[0019] S4: The laser welding gun welds the gap through the light-transmitting part, and the transmission component makes the inner and outer shells and the base plate rotate synchronously, thus completing the full circle welding.

[0020] The beneficial effects of this invention are: the invention places the thermos cup in an independent vacuum chamber, and the laser welding gun welds the gap at the joint through the light-transmitting part, eliminating the need to build a large vacuum chamber, thereby reducing equipment costs. At the same time, it can be used for assembly line work, thereby quickly circulating the product, increasing the welding speed, and thus reducing production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention.

[0022] Figure 2 This is a cross-sectional view of the present invention.

[0023] Figure 3 This is a schematic diagram of the welding station of the present invention.

[0024] Figure 4 This is a schematic diagram of the interior of the vacuum chamber of the present invention.

[0025] Figure 5 This is a schematic diagram of the thermos cup of the present invention.

[0026] Figure 6 This is a schematic diagram of the interior of the vacuum chamber of the present invention.

[0027] Figure 7 This is a cross-sectional view of the vacuum chamber of the present invention.

[0028] Figure 8 This is a partial enlarged view of the first lifting component of the present invention. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1

[0030] See Figures 1-8The vacuum welding equipment for thermos cups includes a thermos cup 5 comprising an inner and outer shell 51 and a bottom plate 52. The inner and outer shells 51 are cavities with bottom openings. The bottom plate 52 is provided with a stepped opening 521. The upper end of the stepped opening 521 protrudes to be positioned with the bottom opening of the inner and outer shells 51, acting as a positioning stop. The lower end of the stepped opening 521 is concave upwards, forming an upward concave cavity, which is used to position the bottom plate 52.

[0031] The vacuum welding equipment includes a production line 2, a vacuum chamber 1, and a positioning and pushing device 3. The production line 2 is a roller production line, and the vacuum chamber 1 is placed on the roller. The rotation of the roller drives the vacuum chamber 1 to flow on the production line 2. The positioning and pushing device 3 includes a pushing component 31 and a positioning component 32. The positioning component 32 is configured on the side support frame of the production line 2 for limiting rotation. It can rotate at least 90 degrees. When limiting interception is required, the positioning component 32 is in a horizontal state, blocking the flow direction of the production line 2. The vacuum chamber 1 moves under the drive of the roller. After touching the positioning component 32, it stops moving. After the positioning component 32 rotates 90 degrees, it is in a vertical state, and the obstruction to the vacuum chamber 1 disappears. The vacuum chamber 1 can continue to flow with the production line 2.

[0032] The pusher 31 is an electric or pneumatic telescopic component, which is fixedly mounted on the side support frame of the production line. On the other side of the production line 2, a laser welding gun 21 is fixedly mounted opposite the pusher 31. The front end of the pusher 31 is equipped with a suction cup 311 and a top contact rod 312. After the vacuum box 1 is blocked by the positioning component 32, the pusher 31 begins to extend, and the suction cup 311 and the top contact rod 312 contact the vacuum box 1, thereby pushing the vacuum box 1 to move towards the laser welding gun 21. A limit block is set at the position where the laser welding gun 21 is fixedly mounted. The vacuum box 1 touches the limit block and stops moving towards the laser welding gun 21. At this time, the front, back and one side of the vacuum box 1 are limited, so the vacuum box 1 is positioned and locked on the production line 2.

[0033] The front end of the vacuum chamber 1 is the door position for material to enter and exit. A concave cavity 16 is configured on the front end, and a light-transmitting element 11 is configured on the concave cavity 16. The light-transmitting element 11 is a highly transparent quartz glass. The light-transmitting element 11 is perpendicular to the laser beam of the laser welding gun 21 to avoid refraction and make the laser beam accurately act on the position to be welded.

[0034] When the vacuum chamber 1 is locked on the production line 2, the laser welding gun 21 extends into the concave cavity 16, thereby reducing the distance between the laser welding gun 21 and the thermos cup to be welded and reducing energy loss.

[0035] The vacuum chamber 1 is equipped with a support member 12, a first lifting member 13, a second lifting member 14, and a transmission assembly 15. The support member 12 is fixedly arranged inside the vacuum chamber 1. The support member 12 includes two elastic telescopic members 121, which are symmetrically arranged on the support member 12. A positioning groove 1211 is provided on the upper end surface of the elastic telescopic member 121. When the two elastic telescopic members 121 are fully extended, the two arc-shaped positioning grooves 1211 form a complete positioning support groove. The inner and outer shells 51 are placed bottom-down on the combined positioning support groove by a robot or manually. A first inclined surface 1212 is provided on the lower end surface of the elastic telescopic member 121.

[0036] The first lifting component 13 includes a piston tube 131 and a piston rod 132. The piston rod 132 guides the piston to slide within the piston tube 131, and a gas storage chamber 1311 is provided at the bottom end of the piston tube 131. The diameter of the gas storage chamber 1311 is smaller than the diameter of the piston, and the gas pressure in the gas storage chamber 1311 is lower than the standard atmospheric pressure. Therefore, in the initial state, that is, when the vacuum chamber 1 is not evacuated, the piston ring of the piston rod 132 abuts against the bottom surface of the inner cavity of the piston tube 131 under the action of gas pressure, so that the piston rod 132 is in a contracted state in the initial state. During the process of evacuating the vacuum chamber 1 to a vacuum, the gas pressure in the vacuum chamber 1 decreases, and the gas pressure in the gas storage chamber 1311 is greater than the gas pressure in the vacuum chamber 1, thereby pushing the piston rod 132 to extend downward.

[0037] During the vacuuming process, the piston rod 132 automatically extends downwards, and a cap 1321 is disposed on the lower end of the piston rod 132. A rubber layer is adhered to the inner ring of the cap 1321, and a support member 12 supports the inner and outer shells 51. When the piston rod 132 slides downwards, it presses the cap 1321 onto the bottle mouth of the inner and outer shells 51. The rubber layer elastically abuts against the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning and locking the inner and outer shells 51 onto the cap 1321.

[0038] The production line 2 includes multiple stations. At the unloading station, a robot or a worker positions the inner and outer shells 51 on the positioning support groove formed by the combination. At the same time, the low plate 52 is positioned on the base frame 141 and the vacuum box 1 is sealed. The production line 2 flows and transfers the vacuum box 1 to the vacuum station. At the vacuum station, the vacuum equipment is connected to the evacuation end on the vacuum box 1 and evacuates the vacuum box 1 to a vacuum. During the evacuation process, the piston rod 132 extends downward under the action of air pressure, and the cap 1321 is pressed onto the bottle mouth of the inner and outer shells 51. The rubber layer elastically abuts against the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning and locking the inner and outer shells 51 onto the cap 1321.

[0039] Furthermore, both the material feeding station and the vacuum station are equipped with positioning and pushing devices 3 for positioning the vacuum box 1. After the work task at the station is completed, the suction cup 311 is adsorbed onto the rear end face of the vacuum box 1. During the process of the pushing component 31 returning to the initial position, it drives the vacuum box 1 back to its original position. At the same time, the positioning component 32 rotates 90 degrees, so that the vacuum box 1 can be transferred to the next process under the action of the production line.

[0040] The second lifting component 14 includes a base frame 141, a lifting frame 142, and a transition component 143. The base frame 141 is rotatably mounted on the lifting frame 142. The lifting frame 142 is guided downwards and slidably mounted on the support component 12 via guide posts. The lifting frame 142 slides up and down, causing the base frame 141 to move up and down together. A base plate 52 is positioned on the base frame 141 by a robotic arm or manually. The transition component 143 is elastically guided and slidably mounted on the base plate of the vacuum chamber 1, and a transition component 143 is mounted on the transition component 143. A first magnetic suction component 1431 is provided, and the magnetic force of the first magnetic suction component 1431 can pass through the bottom plate of the vacuum box 1. Under the action of the lower magnetic suction component, the transition component 143 moves back and forth on the bottom plate of the vacuum box 1. A rotating wheel 122 is rotatably arranged on the support component 12. One end of the pull rope 144 is connected to the upper end surface of the lifting frame 142, and the other end is connected to the transition component 143. The assembly line 2 is provided with a second magnetic component 22, and the second magnetic component 22 is located below the moving vacuum box 1 of the welding station.

[0041] During the process of vacuum box 1 being moved to the welding station, the pusher 31 positions and pushes vacuum box 1 to laser welding gun 21. The first magnetic suction component 1431 and the second magnetic component 22 are magnetically connected, thereby driving the transition component 143 to move, thus raising the lifting frame 142. The lifting frame 142 is equipped with a second inclined surface 1421. Therefore, during the process of the lifting frame 142 being raised, the second inclined surface 1421 touches the first inclined surface 1211, thereby causing the elastic telescopic component 121 to retract into the support component 12. This causes the support below the inner and outer shells 51 to move away from below the inner and outer shells 51. During the subsequent rising process, the lifting frame 142 inserts the base plate 52 on the base frame 141 into the opening below the inner and outer shells 51. The stepped opening 521 on the base plate 52 is used for positioning and limiting, thereby making the inner and outer shells 51 and the base plate 52 tightly connected. The inner and outer shells 51 are in a vacuum state, and welding work can begin at this time.

[0042] The transmission assembly 15 includes a power component 151, a rotating component 152, and a transition shaft 153. The rotating component 151 is disposed on the bottom plate of the vacuum chamber 1, and a first rotating shaft 1511 is disposed thereon. The base frame 141 is guided and slidably disposed on the first rotating shaft 1511. Therefore, the rotation of the first rotating shaft 1511 synchronously drives the base frame 141 to rotate.

[0043] Rotating component 152 is rotatably mounted on the top plate of vacuum chamber 1 and is coaxially fixedly connected to piston tube 131. Rotating component 152 and piston tube 131 rotate synchronously.

[0044] The upper and lower ends of the transition shaft 153 are respectively rotatably mounted on the upper and lower base plates of the vacuum chamber 1. The first rotating shaft 1511 and the transition shaft 153 are connected by a synchronous pulley and a synchronous belt. The rotating component 152 and the transition shaft 153 are also connected by a synchronous pulley and a synchronous belt. The synchronous pulleys are of the same size. Therefore, the power component 151 and the rotating component 152 rotate synchronously. The piston rod 132 has a hexagonal shaft. Therefore, the rotation of the rotating component 152 synchronously drives the cap 1321 to rotate, thereby causing the inner and outer shells 51 and the base plate 52 to rotate synchronously.

[0045] After the vacuum chamber 1 is pushed into place, the inner and outer shells 51 and the base plate 52 are tightly joined together. At the same time, the laser welding gun 21 extends into the concave cavity 16. At this time, the laser welding gun 21 starts to work. The energy beam emitted by it acts on the joint between the inner and outer shells 51 and the base plate 52 through the light-transmitting element 11. At the same time, the power element 151 starts to rotate slowly, thereby causing the inner and outer shells 51 and the base plate 52 to rotate synchronously. The laser welding gun 21 performs laser welding on the entire circular joint.

[0046] In this embodiment, the power component 151 is a motor, and a contact socket is provided on the outer wall of the vacuum chamber 1. When the vacuum chamber 1 is positioned and touches the limiting block of the laser welding gun 21, the contact socket is connected to the central control unit of the production line for power and control. Therefore, when the laser welding gun 21 is working, the power component 151 starts working synchronously.

[0047] Its working principle or usage method is as follows:

[0048] When the material is unloading, the positioning and pushing device 3 locks the vacuum box 1 in position. The robot or manual labor positions the inner and outer shells 51 on the positioning support groove formed by the combination. At the same time, the low plate 52 is positioned on the base frame 141 and the vacuum box 1 is closed. Meanwhile, the positioning and pushing device 3 releases the limit, and the production line 2 transfers the vacuum box 1 to the vacuum station.

[0049] At the vacuum station, the positioning and pushing device 3 positions and locks the vacuum box 1. The vacuum equipment is connected to the evacuation end on the vacuum box 1 and evacuates the vacuum box 1 to a vacuum. During the evacuation process, the piston rod 132 extends downward under the action of air pressure, and the cap 1321 is pressed onto the bottle mouth of the inner and outer shells 51. The rubber layer elastically abuts against the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning and locking the inner and outer shells 51 onto the cap 1321. At the same time, the positioning and pushing device 3 releases the limit, and the production line 2 transfers the vacuum box 1 to the welding station.

[0050] At the welding station, the positioning and pushing device 3 positions and locks the vacuum box 1. A second magnetic component 22 is positioned at the station. During the process of the pushing component 31 positioning and pushing the vacuum box 1 to the laser welding gun 21, the first magnetic component 1431 and the second magnetic component 22 are magnetically connected, thereby driving the transition component 143 to move, thus raising the lifting frame 142. A second inclined surface 1421 is provided on the lifting frame 142. Therefore, during the upward movement of the lifting frame 142, the second inclined surface 1421... The top contacts the first inclined surface 1211, thereby causing the elastic telescopic member 121 to retract into the support member 12, and thus causing the support below the inner and outer shells 51 to move away from below the inner and outer shells 51. During the subsequent lifting process, the lifting frame 142 inserts the base plate 52 on the base frame 141 into the opening below the inner and outer shells 51. The stepped opening 521 on the base plate 52 is used for positioning and limiting, thereby making the inner and outer shells 51 and the base plate 52 tightly connected, and the inner and outer shells 51 are in a vacuum state, at which point welding work can begin.

[0051] The laser welding gun 21 starts working, and the energy beam emitted by it acts on the joint between the inner and outer shells 51 and the base plate 52 through the light-transmitting element 11. At the same time, the power element 151 starts to rotate slowly, thereby causing the inner and outer shells 51 and the base plate 52 to rotate synchronously. The laser welding gun 21 performs laser welding on the entire circular joint. Example 2

[0052] See Figures 1-8 The difference between this embodiment and embodiment 1 lies in the structure of the power component 151 and the power source of the power component 151; all other aspects are the same.

[0053] In this embodiment, the power component 151 is rotatably mounted on the bottom plate of the vacuum chamber 1, while the first rotating shaft 1511 is fixedly mounted on the power component 151. The rotation of the power component 151 drives the first rotating shaft 1511 to rotate.

[0054] The production line 2 is also equipped with a turntable 23, on which multiple magnetic pole blocks are distributed circumferentially. The diameter of the power component 151 is the same as that of the turntable 23, and opposite magnetic poles are arranged on the bottom surface of the power component 151. A motor is connected to the bottom of the turntable 23.

[0055] At the welding station, the positioning and pushing device 3 positions and locks the vacuum box 1. At this time, the power component 151 is located above the turntable 23. The two components are isolated by the bottom plate of the vacuum box 1, and the magnetic force can pass through the bottom plate. Thus, the turntable 23 and the power component 151 are magnetically connected. The rotation of the turntable 23 drives the power component 151 to rotate, thereby realizing the laser welding gun 21 to perform laser welding on the entire circular joint.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vacuum welding device for insulated cups, comprising an insulated cup (5) for welding, the insulated cup (5) comprising an inner and outer shell (51) and a base plate (52), characterized in that: The vacuum chamber (1) includes an inner and outer shell (51) and a base plate (52) positioned inside the vacuum chamber (1). A light-transmitting element (11) is provided on the vacuum chamber (1), and the position of the light-transmitting element (11) is the point where the inner and outer shell (51) and the base plate (52) are joined. The assembly line (2) is equipped with a laser welding gun (21). The vacuum box (1) is located on the assembly line (2) and is driven by the assembly line (2) to move. When it moves to the laser welding gun (21), the laser beam emitted by the laser welding gun (21) passes through the light-transmitting part (11) to perform laser welding on the joint between the inner and outer shells (51) and the base plate (52). The vacuum chamber (1) is equipped with an evacuation end, which is used to connect with a vacuum component to evacuate the vacuum chamber (1) to a vacuum. The vacuum chamber (1) is equipped with a support component (12), a first lifting component (13), a second lifting component (14) and a transmission component (15). The support component (12) is used to position the inner and outer shells (51). The first lifting component (13) is used to descend and fit onto the inner and outer shells (51) during the evacuation process. The second lifting component (14) is used to position and place the base plate (52), and after vacuuming, it is pushed upward to combine the base plate (52) with the bottom of the inner and outer shells (51); the transmission component (15) is used to make the inner and outer shells (51) and the base plate (52) rotate synchronously, and complete the full circle welding when the laser welding gun (21) is welding. The first lifting component (13) includes a piston tube (131) and a piston rod (132). The piston rod (132) guides the piston to slide inside the piston tube (131), and a gas storage chamber (1311) is provided at the bottom end of the piston tube (131). A cover (1321) is provided at the front end of the piston rod (132). During the process of the vacuum box (1) being evacuated to a vacuum, the air pressure in the gas storage chamber (1311) pushes the piston rod (132) down, so that the cover (1321) is fitted on the inner and outer shells (51). The second lifting component (14) includes a base frame (141) and a lifting frame (142). The base frame (141) is used to position and place the base plate (52), and the base frame (141) is rotatably arranged in the lifting frame (142). The lifting frame (142) is guided and slidably arranged on the support member (12) and the second inclined surface is arranged on the lifting frame (142). When the lifting frame (142) rises, it pushes the base plate (52) upward so that it is connected to the bottom of the inner and outer shells (51). The transmission assembly includes a power component, a rotating component, and a transition shaft. The rotating component is disposed on the bottom plate of the vacuum chamber, and a first rotating shaft is disposed thereon. The base frame is guided and slidably disposed on the first rotating shaft. The rotating component is mounted on the top plate of the vacuum chamber and is fixedly connected to the piston tube on the same axis. The rotating component rotates synchronously with the piston tube. The upper and lower ends of the transition shaft are respectively rotated and configured on the upper and lower base plates of the vacuum box (1). The first rotating shaft and the transition shaft are connected by a synchronous pulley and a synchronous belt. The rotating part and the transition shaft are also connected by a synchronous pulley and a synchronous belt, and the synchronous pulleys are of the same size.

2. The vacuum welding equipment for thermos cups according to claim 1, characterized in that: The support member (12) includes an elastic telescopic member (121). The upper end of the elastic telescopic member (121) is provided with a positioning groove (1211) for positioning and supporting the inner and outer shells (51). The lower end is provided with a first inclined surface. The second lifting member (14) is provided with a second inclined surface. When the second lifting member (14) rises, the second inclined surface touches the first inclined surface, causing the elastic telescopic member (121) to move away from below the inner and outer shells (51).

3. The vacuum welding equipment for thermos cups according to claim 1, characterized in that: The cover (1321) is provided with a rubber layer. When the cover (1321) is fitted onto the inner and outer shells (51), the inner and outer shells (51) are elastically fastened by the rubber layer.

4. The vacuum welding equipment for thermos cups according to claim 1, characterized in that: The second lifting member (14) also includes a transition member (143), which is guided and slidably disposed on the bottom plate of the vacuum box (1), and a wheel (122) is disposed on the support member (12). One end of a pull rope (144) is connected to the lifting frame (142), and the other end is connected to the transition member (143). The transition member (143) moves back and forth, causing the support member (12) to move back and forth.

5. The vacuum welding equipment for thermos cups according to claim 4, characterized in that: The production line (2) is equipped with a positioning and pushing device (3), which includes a pushing component (31) and a positioning component (32). The positioning component (32) is rotatably positioned on the frame of the production line (2) to position and block the vacuum box (1) on the production line. The pushing component (31) is used to position and push the vacuum box (1) to the laser welding gun (21). A first magnetic suction component (1431) is provided on the transition component (143), and a second magnetic component (22) is provided on the production line (2). During the process of positioning and pushing the vacuum box (1) to the laser welding gun (21), the first magnetic suction component (1431) and the second magnetic component (22) are magnetically connected, which drives the transition component (143) to move and raise the lifting frame (142).

6. The vacuum welding equipment for thermos cups according to claim 1, characterized in that: The front end face of the vacuum chamber (1) is provided with a concave cavity (16), and a light-transmitting element (11) is provided on the bottom surface of the concave cavity (16). The light-transmitting element (11) is made of transparent quartz glass, which is used to allow the laser to pass through efficiently and act on the welding point inside the vacuum chamber (1).

7. The welding process using the vacuum welding equipment for thermos cups as described in any one of claims 2-6, characterized in that: S1: Position the inner and outer shells (51) and the base plate (52) in the vacuum chamber (1) by means of a robotic arm or manual labor, and then seal the vacuum chamber (1). S2: The assembly line (2) transfers the vacuum box (1) to the vacuum station and evacuates the vacuum box (1) to a vacuum. S3: The assembly line (2) transfers the vacuum box (1) to the welding station, and the inner and outer shells (51) and the base plate (52) are combined during the positioning and locking process; S4: The laser welding gun (21) welds the gap through the light-transmitting part (11), and the transmission component (15) makes the inner and outer shells (51) and the base plate (52) rotate synchronously, thereby completing the full circle welding.

Images