Vacuum cup vacuum welding equipment and welding process

Abstract

The vacuum welding equipment comprises the vacuum cup used for welding, the vacuum cup comprises an inner shell, an outer shell and a bottom plate, the vacuum cup comprises a vacuum box, the inner shell, the outer shell and the bottom plate are positioned and placed in the vacuum box, a light-transmitting part is arranged on the vacuum box, and the position corresponding to the light-transmitting part is the position point where the inner shell, the outer shell and the bottom plate are combined. A laser welding gun is arranged on the assembly line, the vacuum box is arranged on the assembly line and driven by the assembly line to flow, and when the vacuum box flows to the laser welding gun, laser beams emitted by the laser welding gun penetrate through the light-transmitting part to conduct laser welding on the joint of the inner shell, 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 joint across the light transmitting piece, construction of a large vacuum chamber is omitted, and therefore the equipment cost is reduced, meanwhile, assembly line work can be used, circulation is rapidly carried out, the welding speed is increased, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum laser welding, in particular to vacuum welding equipment and a welding process for a thermos cup. Background Art

[0002] The thermos cup is made by welding the inner liner and the outer shell, and the heat preservation effect of the thermos cup is guaranteed by the vacuum degree of the cavity between the outer shell and the inner liner. Therefore, when sealing the cavity, the cavity needs to be evacuated to a vacuum.

[0003] The existing thermos cup welding device, such as that described in publication number CN112846497A, performs welding in a large hollow chamber. One or more cups are welded in the welding chamber. After welding is completed, the cups are transferred. During the transfer process, the vacuum chamber needs to be opened. Therefore, vacuum needs to be evacuated every time welding is performed, and vacuum welding cannot be performed continuously. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the present invention provides vacuum welding equipment and a welding process for a thermos cup.

[0005] In order to solve the above technical problems, the present invention is solved through the following technical solutions: vacuum welding equipment for thermos cups, including a thermos cup for welding, the thermos cup includes an inner and outer shell and a bottom plate, including a vacuum box, the inner and outer shells and the bottom plate are positioned and placed in the vacuum box, the vacuum box is provided with a light-transmitting part, the position corresponding to the light-transmitting part is the position point where the inner and outer shells and the bottom plate are combined, an assembly line, a laser welding gun is provided on the assembly line, the vacuum box is provided on the assembly line, and the assembly line drives it to flow, when it flows to the laser welding gun, the laser beam emitted by the laser welding gun passes through the light-transmitting part to perform laser welding on the joint of the inner and outer shells and the bottom plate.

[0006] The beneficial effect is that the thermos cup is placed in an independent vacuum box, and the laser welding gun welds the gap at the joint through the translucent part, thereby reducing the space required for vacuum welding and reducing energy loss. At the same time, it can quickly flow and increase the welding speed.

[0007] In the above scheme, preferably, the vacuum box is provided with an evacuation end, which is used to connect with the vacuum part to evacuate the vacuum box to a vacuum state. The vacuum box is provided with a support part, a first lifting part, a second lifting part and a transmission assembly. The support part is used to position and place the inner and outer shells. The first lifting part is used to descend and be mounted on the inner and outer shells during the vacuum process. The second lifting part is used to position and place the bottom plate, and after vacuuming, push it upward to combine the bottom plate with the bottom of the inner and outer shells. The transmission assembly is used to rotate the inner and outer shells and the bottom plate synchronously, and complete the full circle welding when the laser welding gun is used.

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

[0009] In the above scheme, preferably, the first lifting member includes a piston tube and a piston rod, the piston rod guides the piston to slide in the piston tube, and an air storage chamber is opened at the bottom end of the piston tube, and a cover sleeve is arranged at the front end of the piston rod. During the process of evacuating the vacuum box to vacuum, the air pressure in the air storage chamber pushes the piston rod down, so that the cover sleeve is set on the inner and outer shells.

[0010] In the above solution, preferably, a rubber layer is arranged in the cover sleeve, and when the cover sleeve is mounted on the inner and outer shells, the inner and outer shells are elastically fastened by the rubber layer.

[0011] In the above scheme, preferably, the second lifting member includes a base frame and a lifting frame, the base frame is used to position and place the bottom plate, and the base frame is rotatably configured in the lifting frame, the lifting frame is guided and slidably configured on the support member up and down, and the second inclined surface is configured on the lifting frame. When the lifting frame rises, it pushes the bottom plate upward so that it is matched and connected with the bottom of the inner and outer shells.

[0012] In the above scheme, preferably, the second lifting member also includes a transition member, the transition member is slidingly configured on the bottom plate of the vacuum box, and a rotating wheel is configured on the support member. One end of the pull rope is connected to the lifting frame, and the other end is connected to the transition member. The transition member moves forward and backward to drive the support member to move forward and backward.

[0013] In the above scheme, preferably, the assembly line is provided with a positioning and pushing device, which includes a pushing member and a positioning member. The positioning member is configured on the frame of the assembly line for limited rotation to position and block the vacuum box on the assembly line. The pushing member is used to position and push the vacuum box to the laser welding gun, and a first magnetic member is configured on the transition member. The assembly line is provided with a second magnetic member. In the process of positioning and pushing the vacuum box to the laser welding gun, the first magnetic member is magnetically connected to the second magnetic member, which drives the transition member to move relative to each other, thereby raising the lifting frame.

[0014] In the above solution, preferably, an inner concave cavity is arranged on the front end surface of the vacuum box, and a light-transmitting member is arranged on the bottom surface of the inner concave cavity, and the light-transmitting member is transparent quartz glass, so as to allow the laser to pass through efficiently and act on the welding points in the vacuum box.

[0015] Vacuum welding process of thermos cup: S1: Position the inner and outer shells and the bottom plate in the vacuum box by a robot or manually, and close the vacuum box.

[0016] S2: The assembly line transfers the vacuum box to the vacuum station and evacuates the vacuum box to a vacuum state.

[0017] S3: The assembly line transfers the vacuum box to the welding station, and combines the inner and outer shells and the bottom plate during positioning and locking.

[0018] S4: The laser welding gun welds the gap through the light-transmitting component, and the transmission assembly causes the inner and outer shells and the bottom plate to rotate synchronously, thereby completing the full circle welding.

[0019] The beneficial effects of the present invention are: the present invention places the thermos cup in an independent vacuum box, and the laser welding gun welds the gap at the joint through the translucent part, eliminating the need to build a large vacuum chamber, thereby reducing equipment costs. At the same time, it can use assembly line work, thereby quickly circulating, improving welding speed, and thus reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 It is a schematic diagram of the welding station of the present invention.

[0023] Figure 4 Schematic diagram of the interior of the vacuum box of the present invention.

[0024] Figure 5 It is a schematic diagram of the thermos cup of the present invention.

[0025] Figure 6 Schematic diagram of the interior of the vacuum box of the present invention.

[0026] Figure 7 This is a cross-sectional view of the vacuum box of the present invention.

[0027] Figure 8 This is a partially enlarged view of the first lifting member of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Example 1

[0029] See also Figures 1-8 , vacuum welding equipment for thermos cups, the thermos cup 5 includes an inner and outer shell 51 and a bottom plate 52. The inner and outer shells 51 are cavities with bottom openings. A step opening 521 is provided on the bottom plate 52. The upper end of the step opening 521 protrudes for positioning with the bottom openings of the inner and outer shells 51, acting as a positioning gear, and the lower end surface of the step opening 521 is concave upward to form an upward concave cavity, which is used to position the bottom plate 52.

[0030] The vacuum welding equipment includes an assembly line 2, a vacuum box 1 and a positioning and pushing device 3. The assembly line 2 is a shaft roller assembly line. The vacuum box 1 is placed on the shaft roller. The rotation of the shaft roller drives the vacuum box 1 to flow on the assembly line 2. The positioning and pushing device 3 includes a pushing member 31 and a positioning member 32. The positioning member 32 is configured to limit rotation on the side support frame of the assembly line 2. It can rotate at least 90 degrees. When limited interception is required, the positioning member 32 is in a horizontal state and intercepts laterally in the flow direction of the assembly line 2. The vacuum box 1 moves driven by the shaft roller and stops moving after touching the positioning member 32. After the positioning member 32 rotates 90 degrees, it is in a vertical state, and then the obstruction to the vacuum box 1 disappears, and the vacuum box 1 can continue to flow with the assembly line 2.

[0031] The pushing member 31 is an electric or pneumatic telescopic member, which is fixedly configured on the side support frame of the assembly line. On the other side of the assembly line 2, a laser welding gun 21 is fixedly configured, which is located opposite the pushing member 31. The front end of the pushing member 31 is configured with a suction cup 311 and a top touch rod 312. After the vacuum box 1 is blocked by the positioning member 32, the pushing member 31 begins to extend, and the suction cup 311 and the top touch rod 312 contact the vacuum box 1, thereby pushing the vacuum box 1 to move toward the laser welding gun 21. A limiting block is provided at the position where the laser welding gun 21 is fixedly configured. The vacuum box 1 touches the limiting block and stops moving toward the laser welding gun 21. At this time, the front, rear and one side of the vacuum box 1 are limited, so the vacuum box 1 is positioned and locked on the assembly line 2.

[0032] The front end of the vacuum box 1 is where the door is opened, which is used to enter and exit materials. An inner concave cavity 16 is arranged on the front end, and a light-transmitting member 11 is arranged on the inner concave cavity 16. The light-transmitting member 11 is made of highly transparent quartz glass. The light-transmitting member 11 is perpendicular to the laser beam of the laser welding gun 21 to avoid refraction, so that the laser beam acts accurately on the position to be welded.

[0033] When the vacuum box 1 is locked on the assembly line 2, the laser welding gun 21 extends into the inner concave cavity 16, thereby reducing the distance between the laser welding gun 21 and the thermos cup to be welded, thereby reducing energy loss.

[0034] The vacuum box 1 is provided 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 in the vacuum box 1. The support member 12 includes an elastic telescopic member 121. There are two elastic telescopic members 121, and they 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 with the bottom facing downward on the combined positioning support groove by a robot or an artificial bottom, and a first inclined surface 1212 is provided on the lower end surface of the elastic telescopic member 121.

[0035] The first lifting member 13 includes a piston tube 131 and a piston rod 132. The piston rod 132 guides the piston to slide in the piston tube 131, and an air storage chamber 1311 is opened at the bottom end of the piston tube 131. The diameter of the air storage chamber 1311 is smaller than the diameter of the piston. At the same time, the air pressure in the air storage chamber 1311 is lower than the standard atmospheric pressure. Therefore, in the initial state, that is, when the vacuum box 1 is not evacuated to a vacuum, the piston ring of the piston rod 132 contacts the bottom surface of the inner cavity of the piston tube 131 under the action of air pressure, so that in the initial state, the piston rod 132 is in a retracted state. In the process of evacuating the vacuum box 1 to a vacuum, the air pressure in the vacuum box 1 decreases, and the air pressure in the air storage chamber 1311 is greater than the air pressure in the vacuum box 1, thereby pushing the piston rod 132 to extend downward.

[0036] During the process of evacuating the vacuum, the piston rod 132 automatically extends downward, and a cap 1321 is provided on the lower end of the piston rod 132. A rubber layer is adhered to the inner ring of the cap 1321, and the inner and outer shells 51 are supported by a support member 12 below. When the piston rod 132 slides downward, the cap 1321 is pressed onto the bottle mouth of the inner and outer shells 51, and the rubber layer elastically contacts the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning and locking the inner and outer shells 51 on the cap 1321.

[0037] The assembly line 2 includes multiple workstations. At the discharge station, a robot or a human positions the inner and outer shells 51 on the positioning support grooves formed by the combination, and at the same time positions the lower plate 52 on the base frame 141, and closes the vacuum box 1. The assembly line 2 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 the vacuum box 1 is evacuated to a vacuum. During the vacuum process, the piston rod 132 extends downward under the action of air pressure, and the cap 1321 is pressed on the bottle mouth of the inner and outer shells 51. The rubber layer elastically contacts the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning the inner and outer shells 51 and locking them on the cap 1321.

[0038] In addition, both the discharge station and the vacuum station are equipped with a positioning pushing device 3 for positioning the vacuum box 1. After the work task of the station is completed, the suction cup 311 is adsorbed on the rear end surface of the vacuum box 1. When the pushing member 31 returns to the initial position, it drives the vacuum box 1 to return to its original position. At the same time, the positioning member 32 rotates 90 degrees, so that the vacuum box 1 can flow to the next process under the action of the assembly line.

[0039] The second lifting member 14 includes a base frame 141, a lifting frame 142 and a transition member 143. The base frame 141 is rotatably configured on the lifting frame 142. The lifting frame 142 is configured to slide downward on the support member 12 through a guide column. The lifting frame 142 slides up and down to drive the base frame 141 to move up and down together. The bottom plate 52 is placed on the base frame 141 through a robot or manual positioning, and the transition member 143 is elastically guided and slidably configured on the bottom plate of the vacuum box 1, and a transition member 143 is provided on the transition member 143. A first magnetic member 1431 is provided, and the magnetic attraction of the first magnetic member 1431 can penetrate the bottom plate of the vacuum box 1. Under the action of the magnetic member below, the transition member 143 moves back and forth on the bottom plate of the vacuum box 1, and a rotating wheel 122 is rotatably configured on the support member 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 member 143. The assembly line 2 is provided with a second magnetic member 22, and the second magnetic member 22 is located below the movement of the vacuum box 1 at the welding station.

[0040] When the vacuum box 1 is transferred to the welding station, the pushing member 31 positions and pushes the vacuum box 1 to the laser welding gun 21. The first magnetic member 1431 is magnetically connected to the second magnetic member 22, thereby relatively driving the transition member 143 to move, thereby lifting the lifting frame 142 upward. A second inclined surface 1421 is provided on the lifting frame 142. Therefore, during the upward lifting of the lifting frame 142, the second inclined surface 1421 contacts the first inclined surface 1211, thereby retracting the elastic telescopic member 121 into the support member 12, thereby causing the support under the inner and outer shells 51 to leave the bottom of the inner and outer shells 51. During the subsequent rising process, the lifting frame 142 inserts the bottom plate 52 on the base frame 141 into the opening under the inner and outer shells 51. The step opening 521 on the bottom plate 52 is used for positioning and limiting, thereby tightly combining the inner and outer shells 51 and the bottom plate 52, and the inner and outer shells 51 are in a vacuum state. At this time, welding work can begin.

[0041] The transmission assembly 15 includes a power member 151, a rotating member 152 and a transition shaft 153. The rotating member 151 is arranged on the bottom plate of the vacuum box 1, and a first rotating shaft 1511 is provided thereon. The base frame 141 is guided and slidably arranged on the first rotating shaft 1511, so that the rotation of the first rotating shaft 1511 synchronously drives the base frame 141 to rotate.

[0042] The rotating member 152 is rotatably disposed on the top plate of the vacuum box 1 and is coaxially fixedly connected to the piston tube 131 . The rotating member 152 and the piston tube 131 rotate synchronously.

[0043] The upper and lower ends of the transition shaft 153 are respectively rotated on the upper and lower bottom plates of the vacuum box 1. The first rotating shaft 1511 and the transition shaft 153 are powered by a synchronous wheel and a synchronous belt. The rotating member 152 and the transition shaft 153 are also powered by a synchronous wheel and a synchronous belt. The sizes of the synchronous wheels are consistent, so the power member 151 and the rotating member 152 rotate synchronously. The rod body of the piston rod 132 is a hexagonal shaft, so the rotation of the rotating member 152 synchronously drives the cap 1321 to rotate, thereby causing the inner and outer shells 51 and the bottom plate 52 to rotate synchronously.

[0044] After the vacuum box 1 is pushed into place, the inner and outer shells 51 and the bottom plate 52 are tightly combined, and the laser welding gun 21 is inserted into the inner concave cavity 16. At this time, the laser welding gun 21 starts to work, and the energy beam it emits passes through the transparent component 11 and acts on the junction of the inner and outer shells 51 and the bottom plate 52. At the same time, the power component 151 starts to rotate slowly, thereby causing the inner and outer shells 51 and the bottom plate 52 to rotate synchronously, and the laser welding gun 21 performs laser welding on the entire circular joint.

[0045] In this embodiment, the power part 151 is a motor, and a contact socket is provided on the outer wall of the vacuum box 1. When the vacuum box 1 is positioned to touch the limit block of the laser welding gun 21, the contact socket is connected to the central control unit of the assembly line to realize electrical energy and control. Therefore, when the laser welding gun 21 is working, the power part 151 starts working synchronously.

[0046] Its working principle or usage is as follows: When at the discharge station, the positioning and pushing device 3 positions and locks the vacuum box 1, and the robot or manual personnel positions the inner and outer shells 51 on the positioning support grooves formed by the combination, and at the same time positions the lower plate 52 on the base frame 141, and then closes the vacuum box 1. At the same time, the positioning and pushing device 3 releases the limit, and the assembly line 2 transfers the vacuum box 1 to the vacuum station.

[0047] 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 the vacuum box 1 is evacuated to a vacuum. During the process of evacuating to a vacuum, the piston rod 132 extends downward under the action of air pressure, and the cap 1321 is pressed on the bottle mouth of the inner and outer shells 51. The rubber layer elastically contacts the outer wall of the bottle mouth of the inner and outer shells 51, thereby positioning and locking the inner and outer shells 51 on the cap 1321. At the same time, the positioning and pushing device 3 releases the limit, and the assembly line 2 transfers the vacuum box 1 to the welding station.

[0048] At the welding station, the positioning and pushing device 3 positions and locks the vacuum box 1, and a second magnetic member 22 is configured on the positioning station. During the process of the pushing member 31 positioning and pushing the vacuum box 1 to the laser welding gun 21, the first magnetic member 1431 is magnetically connected with the second magnetic member 22, thereby relatively driving the transition member 143 to move, thereby lifting the lifting frame 142 upward, and a second inclined surface 1421 is configured on the lifting frame 142. Therefore, during the process of the lifting frame 142 being lifted upward, the second inclined surface 1421 The top touches the first inclined surface 1211, thereby retracting the elastic telescopic member 121 into the support member 12, thereby causing the support under the inner and outer shells 51 to leave the bottom of the inner and outer shells 51. During the subsequent rising process, the lifting frame 142 inserts the bottom plate 52 on the base frame 141 into the opening below the inner and outer shells 51. The step opening 521 on the bottom plate 52 is used for positioning and limiting, thereby making the inner and outer shells 51 and the bottom plate 52 tightly combined, and the inner and outer shells 51 are in a vacuum state, and welding work can begin at this time.

[0049] The laser welding gun 21 starts working, and the energy beam it emits passes through the light-transmitting member 11 and acts on the junction of the inner and outer shells 51 and the bottom plate 52. At the same time, the power member 151 starts to rotate slowly, thereby causing the inner and outer shells 51 and the bottom plate 52 to rotate synchronously. The laser welding gun 21 performs laser welding on the entire circular joint. Example 2

[0050] See also Figures 1-8 , compared with embodiment 1, the difference lies in the structure of the power member 151 and the power source of the power member 151, and the rest are the same.

[0051] In this embodiment, the power member 151 is rotatably disposed on the bottom plate of the vacuum box 1 , and the first rotating shaft 1511 is fixedly disposed on the power member 151 . The rotation of the power member 151 drives the first rotating shaft 1511 to rotate.

[0052] A turntable 23 is also provided on the assembly line 2, on which a plurality of magnetic pole blocks are distributed circumferentially. The diameter of the power part 151 is consistent with that of the turntable 23, and opposite magnetic poles are provided on the bottom surface of the power part 151. A motor is connected below the turntable 23.

[0053] At the welding station, the positioning and pushing device 3 positions and locks the vacuum box 1. At this time, the power part 151 is located above the turntable 23. The two parts are isolated by the bottom plate of the vacuum box 1, and the magnetic force can pass through the bottom plate, so that the turntable 23 is magnetically connected to the power part 151. The rotation of the turntable 23 drives the power part 151 to rotate, thereby realizing the laser welding gun 21 to perform laser welding on the entire circular joint.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vacuum welding device for a thermos cup, comprising a thermos cup (5) for welding, wherein the thermos cup (5) comprises an inner and outer shell (51) and a bottom plate (52), characterized in that: The vacuum box (1) comprises an inner and outer shell (51) and a bottom plate (52) positioned and placed in the vacuum box (1); a light-transmitting member (11) is provided on the vacuum box (1); and the position corresponding to the light-transmitting member (11) is the position where the inner and outer shell (51) and the bottom plate (52) are combined; The assembly line (2) is provided with a laser welding gun (21). The vacuum box (1) is provided on the assembly line (2) and is driven by the assembly line (2) to circulate. When the vacuum box (1) circulates to the laser welding gun (21), the laser beam emitted by the laser welding gun (21) passes through the light-transmitting member (11) to perform laser welding on the joint of the inner and outer shells (51) and the bottom plate (52).

2. The vacuum welding equipment for thermos cups according to claim 1, characterized in that: The vacuum box (1) is provided with an evacuation end, which is used to connect to a vacuum component to evacuate the vacuum box (1) to a vacuum state; A support member (12), a first lifting member (13), a second lifting member (14) and a transmission assembly (15) are arranged in the vacuum box (1). The support member (12) is used to position and place the inner and outer shells (51). The first lifting member (13) is used to descend and sleeve on the inner and outer shells (51) during the vacuuming process; The second lifting member (14) is used to position the bottom plate (52) and, after being evacuated to a vacuum state, to push the bottom plate (52) upwards to combine the bottom plate (52) with the bottom of the inner and outer shells (51); The transmission assembly (15) is used to synchronously rotate the inner and outer shells (51) and the bottom plate (52), and complete the full circle welding when the laser welding gun (21) performs welding.

3. The vacuum welding equipment for thermos cups according to claim 2, characterized in that: The support member (12) includes an elastic telescopic member (121). A positioning groove (1211) is provided at the upper end of the elastic telescopic member (121) for positioning and supporting the inner and outer shells (51). A first inclined surface is provided at the lower end. A second inclined surface is provided on the second lifting member (14). When the second lifting member (14) rises, the second inclined surface contacts the first inclined surface, causing the elastic telescopic member (121) to leave the lower portion of the inner and outer shells (51).

4. The vacuum welding equipment for thermos cups according to claim 2, characterized in that: The first lifting member (13) comprises a piston tube (131) and a piston rod (132). The piston rod (132) is configured to guide the piston to slide in the piston tube (131). An air storage chamber (1311) is provided at the bottom end of the piston tube (131). A cover sleeve (1321) is provided at the front end of the piston rod (132). When the vacuum box (1) is evacuated to a vacuum state, the air pressure in the air storage chamber (1311) pushes the piston rod (132) downward, causing the cover sleeve (1321) to be sleeved on the inner and outer shells (51).

5. The vacuum welding equipment for thermos cups according to claim 4, characterized in that: A rubber layer is arranged inside the cover sleeve (1321), and when the cover sleeve (1321) is sleeved on the inner and outer shells (51), the inner and outer shells (51) are elastically fastened by the rubber layer.

6. The vacuum welding equipment for thermos cups according to claim 4, characterized in that: The second lifting member (14) includes a base frame (141) and a lifting frame (142). The base frame (141) is used to position and place the bottom plate (52), and the base frame (141) is rotatably configured in the lifting frame (142). The lifting frame (142) is configured to slide upward and downward on the support member (12). The second inclined surface is configured on the lifting frame (142). When the lifting frame (142) rises, it pushes the bottom plate (52) upward so that it is matched and connected with the bottom of the inner and outer shells (51).

7. The vacuum welding equipment for thermos cups according to claim 4, characterized in that: The second lifting member (14) also includes a transition member (143), which is configured to slide on the bottom plate of the vacuum box (1) and is provided with a rotating wheel (122) 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 forward and backward, driving the support member (12) to move forward and backward.

8. The vacuum welding equipment for thermos cups according to claim 7, characterized in that: The assembly line (2) is provided with a positioning and pushing device (3), which includes a pushing member (31) and a positioning member (32). The positioning member (32) is configured on the frame of the assembly line (2) for limited rotation and is used to position and block the vacuum box (1) on the assembly line. The pushing member (31) is used to position and push the vacuum box (1) to the laser welding gun (21), and a first magnetic member (1431) is configured on the transition member (143). The assembly line (2) is provided with a second magnetic member (22). In the process of positioning and pushing the vacuum box (1) to the laser welding gun (21), the first magnetic member (1431) is magnetically connected to the second magnetic member (22), and relatively drives the transition member (143) to move, so that the lifting frame (142) rises.

9. The vacuum welding equipment for thermos cups according to claim 2, characterized in that: An inner concave cavity (16) is arranged on the front end surface of the vacuum box (1), and a light-transmitting member (11) is arranged on the bottom surface of the inner concave cavity (16). The light-transmitting member (11) is made of transparent quartz glass, so as to allow laser light to efficiently penetrate and act on welding points in the vacuum box (1).

10. A welding process using the vacuum welding equipment for thermos cups according to any one of claims 2 to 9, characterized in that: S1: Positioning the inner and outer shells (51) and the bottom plate (52) in the vacuum box (1) by a robot or manually, and sealing the vacuum box (1); S2: The assembly line (2) transfers the vacuum box (1) to the vacuum station, and evacuates the vacuum box (1) to a vacuum state; S3: The assembly line (2) transfers the vacuum box (1) to the welding station, and combines the inner and outer shells (51) and the bottom plate (52) during positioning and locking; S4: The laser welding gun (21) welds the gap through the light-transmitting member (11), and the transmission assembly (15) causes the inner and outer shells (51) and the bottom plate (52) to rotate synchronously, thereby completing the full circle welding.

Images