Nitrogen filling structure for welding of inner container of vacuum cup

Abstract

The utility model relates to the field of vacuum cups, and discloses a vacuum cup liner welding nitrogen filling structure which comprises a rack. A bottom fixing mechanism used for fixing the bottom of an inner container, an inner container fixing mechanism used for fixing the inner container, a welding mechanism used for achieving welding of the inner container and the bottom of the inner container and a gas filling pipe used for filling nitrogen into the inner container when the inner container is welded are arranged on the machine frame. A first lifting component used for driving the inflation pipe to ascend and descend is further arranged on the machine frame, the first lifting component comprises a mounting block used for fixedly mounting the inflation pipe and a driving component used for driving the mounting block and the inflation pipe to ascend and descend together, and the mechanism can control ascending and descending of the inflation pipe through the arranged first lifting component. After the bottom of the inner container and the inner container are welded, the inflation pipe can be driven to gradually move out of the inner container through the arranged first lifting component, and therefore the overall height of the machine is reduced.

Description

Technical Field

[0001] The utility model relates to the field of thermos cups, in particular to a nitrogen filling structure for welding an inner liner of a thermos cup. Background Art

[0002] Thermos cups are usually made of ceramic or stainless steel, with a vacuum layer inside and a tightly sealed lid on the top for holding water or other liquids. The design of the vacuum layer can effectively delay the heat dissipation of the liquid in the container, thereby achieving the effect of insulation.

[0003] A Chinese patent with announcement number CN211387644U discloses a cup welding production line provided with a gas measuring device, comprising a frame, a conveyor belt is arranged on the frame, a quilt liner bottom welding device, a gas testing device, a welding device, a cup shell bottom welding device and a grinding device are symmetrically arranged on both sides of the frame in sequence, the cup liner bottom welding device and the cup shell bottom welding device both comprise a bottom welding machine frame, a cylinder and a bottom welding working mold frame assembly are arranged on the bottom welding machine frame, the welding device comprises a welding machine frame, a cylinder and a welding working mold frame assembly are arranged on the welding machine frame, the grinding device comprises a grinding machine frame, a grinding fixture assembly is arranged on the grinding machine frame, the gas testing device comprises a gas testing machine frame, a control panel and a cup fixing fixture arranged at intervals are arranged on the table of the gas testing machine frame, a blowing hole is arranged on the cup fixing fixture, a button for controlling the operation of the blowing hole and an indicator light for displaying whether the cup liner is leaking are arranged on the control panel.

[0004] In the above structure, the bottom of the liner and the cup are welded by the bottom welding working mold frame assembly. However, during the welding process of the bottom of the liner, the welded joint will gradually turn black as the welding process progresses, and it is also difficult to completely electrolyze the blackened joint in the subsequent electrolysis process. Existing machines often protect the welding environment by filling with nitrogen, so that the joint is suitable for subsequent electrolysis processes. However, the lifting and lowering of the nitrogen pipe of the existing nitrogen-filled machine is controlled by an overall lifting mechanism, and the nitrogen pipe needs to be inserted into the bottom of the liner during welding. Therefore, after the welding is completed, the entire machine needs to be lifted a large distance to remove the nitrogen pipe from the liner, resulting in a relatively high overall height of the machine. Utility Model Content

[0005] The utility model aims at the shortcoming that the lifting and lowering of the nitrogen pipe in the prior art is controlled by the lifting and lowering of the whole machine, and provides a nitrogen filling structure capable of independently lifting and lowering the nitrogen pipe.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A nitrogen filling structure for welding an inner liner of a thermos cup comprises a frame, on which are arranged a bottom fixing mechanism for fixing the bottom of the inner liner, an inner liner fixing mechanism for fixing the inner liner, a welding mechanism for welding the inner liner to the inner liner bottom, and an inflation tube for filling the inner liner with nitrogen when the inner liner is welded. A first lifting component for driving the inflation tube to be raised and lowered is also arranged on the frame, and the first lifting component comprises a mounting block for fixing the inflation tube and a driving component for driving the mounting block to be raised and lowered together with the inflation tube.

[0008] By adopting the above scheme, the bottom fixing mechanism and the inner liner fixing mechanism arranged on the frame can respectively fix and limit the bottom of the inner liner and the inner liner, so as to facilitate subsequent welding, and the arranged driving component can control the lifting and lowering of the mounting block. When the mounting block descends, the inflation tube fixedly installed on the mounting block will descend together and be partially inserted into the inner liner and nitrogen will be filled into the inner liner; when the mounting block rises, the mounting block will drive the inflation tube fixedly installed thereon to rise together, so that the inflation tube is gradually moved out of the inner liner, thereby reducing the overall height of the machine.

[0009] Preferably, the driving component comprises a first cylinder vertically upwardly arranged on the frame, and the protruding end of the first cylinder is interconnected with the mounting block.

[0010] By adopting the above scheme, the lifting and lowering of the mounting plate is controlled by the first cylinder arranged vertically upward on the frame. When the inner liner and the bottom of the inner liner are welded, the extending end of the first cylinder can be controlled to extend. At this time, the extending end of the first cylinder will push the mounting block and the inflation tube fixed on the mounting block to descend together. At this time, the inflation tube will gradually be inserted into the bottom of the inner liner; when the welding of the bottom of the inner liner is completed, the inflation tube can be driven by the first cylinder to move partially out of the inner liner, thereby reducing the overall height of the machine.

[0011] Preferably, a first guide component is also provided on the mounting block for guiding the inflation tube when it is raised or lowered.

[0012] Preferably, the first guide component includes a guide sleeve arranged outside the inflation tube, a fixing plate is arranged at one end of the first cylinder close to the mounting block, a connecting plate partially extending out of the fixing plate is arranged on one side of the fixing plate, and both ends of the guide sleeve are respectively connected to the connecting plate and the mounting block.

[0013] By adopting the above scheme, the guide sleeve can be provided to guide the inflatable tube when the inflatable tube is raised or lowered, so that the inflatable tube can be raised or lowered vertically.

[0014] Preferably, a flow limiting component is also provided on the frame for reducing the leakage speed of nitrogen in the inner liner after the inflation pipe inflates the inner liner, and a second lifting component is provided on the frame for driving the flow limiting component to rise and fall.

[0015] Preferably, the flow limiting component includes a flow limiting plug which can be partially inserted into the inner tank after being lowered, and a through hole is provided in the middle of the flow limiting plug for the inflation tube to pass through, and the diameter of the through hole is larger than the diameter of the inflation tube, and a driving plate is provided above the flow limiting plug, whose two ends are respectively fixed to the second lifting component and the flow limiting plug, and the first lifting component is arranged on the driving plate.

[0016] By adopting the above scheme, the flow limiting plug can be partially inserted into the top of the inner liner under the drive of the second lifting component, thereby reducing the speed at which the nitrogen filled in the inner liner flows out of the inner liner, reducing the waste of nitrogen during welding, and reducing production costs. The first lifting component is set on the driving plate, so that when the second lifting component drives the flow limiting plug to rise and fall, it can drive the first lifting component and the inflation tube to rise and fall together. The diameter of the perforation is set larger than the diameter of the inflation tube, so that when the inflation tube is inflated into the inner liner, the original air in the inner liner can flow out through the gap between the perforation and the inner liner.

[0017] Preferably, the second lifting component includes a mounting plate arranged above the first lifting component, a second cylinder is arranged vertically downward on the mounting plate, and a second guide component is arranged between the second cylinder and the drive plate for connecting the two and guiding when the drive plate is lifted or lowered.

[0018] By adopting the above scheme, the flow limiting plug can be driven to be partially inserted into the top of the inner liner through the second cylinder, thereby reducing the speed at which the nitrogen filled in the inner liner leaks out of the inner liner. When the bottom of the inner liner needs to be welded to the inner liner, the second cylinder can be driven at this time, so that the second cylinder drives the flow limiting plug to descend and partially insert it into the top of the inner liner. At this time, the inflation tube will also be at the top of the inner liner. Afterwards, the first lifting component is used to control the inflation tube to descend and insert it into the bottom of the inner liner. At this time, the bottom of the inner liner and the inner liner can be welded; when the welding is completed, the inflation tube can be driven to retract by the first lifting component first, and then the second cylinder is used to control the flow limiting plug and the inflation tube to rise together. At this time, the inner liner can be removed from the machine. When removing the inner liner, the inflation tube can be controlled to retract by the first lifting component first, thereby reducing the overall height of the machine.

[0019] Preferably, the second guide component includes a movable plate fixedly connected to the extended end of the second cylinder, and vertically downward guide columns are respectively provided at both ends. The ends of the two guide columns away from the second cylinder pass through the mounting plate and are connected to the driving plate.

[0020] By adopting the above scheme, the movable plate and the driving plate can be connected to each other by means of guide columns arranged at both ends of the movable plate, so that the movable plate can drive the driving plate to rise and fall together when the second cylinder pushes and pulls it, thereby realizing that the driving plate can drive the flow limiting plug to be partially inserted to the top of the inner tank or gradually move away from the top of the inner tank. At the same time, the two guide columns can guide the driving plate when it is raised and lowered, thereby reducing the probability of the driving plate flipping over when it is raised and lowered.

[0021] Preferably, an escape groove is provided on the mounting plate for escaping when the inflation tube and the mounting block are raised.

[0022] By adopting the above scheme, the avoidance groove can be arranged to avoid the inflation tube when it rises, so that part of the inflation tube can rise above the mounting plate, so that the inflation tube can be completely removed from the inner liner.

[0023] The utility model has significant technical effects due to the adoption of the above technical scheme: the bottom fixing mechanism and the inner liner fixing mechanism arranged on the frame can respectively fix and limit the bottom of the inner liner and the inner liner, thereby facilitating subsequent welding, and the arranged driving component can control the lifting and lowering of the mounting block. When the mounting block descends, the inflation tube fixedly installed on the mounting block will descend together and be partially inserted into the inner liner and nitrogen will be filled into the inner liner; when the mounting block rises, the mounting block will drive the inflation tube fixedly installed thereon to rise together, thereby gradually moving the inflation tube out of the inner liner, thereby reducing the overall height of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an axonometric diagram of a vacuum flask liner welding and nitrogen filling structure in this embodiment;

[0025] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0027] Figure 4 This is a front view of the inflation tube when it is inserted into the inner liner in this embodiment;

[0028] Figure 5 yes Figure 4 Sectional view at CC;

[0029] Figure 6 yes Figure 5 Enlarged view of point D in the middle.

[0030] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Inner liner; 2. Bottom of inner liner; 3. Frame; 4. Bottom fixing mechanism; 5. Inner liner fixing mechanism; 6. Welding mechanism; 7. Mounting block; 801. First cylinder; 802. Second cylinder; 9. Inflating tube; 10. Guide sleeve; 11. Fixing plate; 12. Connecting plate; 13. Flow limiting plug; 14. Perforation; 15. Drive plate; 16. Mounting plate; 17. Moving plate; 18. Guide column; 19. Avoidance groove. DETAILED DESCRIPTION

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] Example

[0033] A vacuum flask liner welding nitrogen filling structure, reference Figure 1 , including a frame 3, on which are provided a bottom fixing mechanism 4 for fixing the bottom 2 of the liner, an inner liner fixing mechanism 5 for fixing the inner liner 1, a welding mechanism 6 for welding the inner liner 1 and the inner liner bottom 2, and an inflation tube 9 for inflating nitrogen inside the inner liner 1 when the inner liner 1 is welded. A first lifting component for driving the inflation tube 9 to be lifted and lowered is also provided on the frame 3, and the first lifting component includes a mounting block 7 for fixing the inflation tube 9 and a driving component for driving the mounting block 7 and the inflation tube 9 to be lifted and lowered together.

[0034] refer to Figure 2-Figure 3 The driving component includes a first cylinder 801 vertically upwardly arranged on the frame 3, and the protruding end of the first cylinder 801 is connected to the mounting block 7.

[0035] refer to Figure 2 A first guide component is also provided on the mounting block 7 for guiding when the inflation tube 9 is raised or lowered. The first guide component includes a guide sleeve 10 arranged on the outer surface of the inflation tube 9. A fixing plate 11 is provided at one end of the first cylinder 801 close to the mounting block 7. A connecting plate 12 partially extending out of the fixing plate 11 is provided on one side of the fixing plate 11. Both ends of the guide sleeve 10 are respectively connected to the connecting plate 12 and the mounting block 7.

[0036] refer to Figure 1-6A flow limiting component is also provided on the frame 3 for reducing the leakage speed of nitrogen in the inner liner 1 from the inner liner 1 after the inflation tube 9 inflates the inner liner 1. A second lifting component for driving the flow limiting component to be lifted and lowered is provided on the frame 3. The flow limiting component includes a flow limiting plug 13 that can be partially inserted into the inner liner 1 after being lowered. A through hole 14 is provided in the middle of the flow limiting plug 13 for the inflation tube 9 to pass through. The diameter of the through hole 14 is larger than the diameter of the inflation tube 9. A driving plate 15 is provided above the flow limiting plug 13, and its two ends are respectively fixed to the second lifting component and the flow limiting plug 13. The first lifting component is provided on the driving plate 15, and the second lifting component includes A mounting plate 16 is arranged above the first lifting component, and a second cylinder 802 is arranged vertically downward on the mounting plate 16. A second guide component for connecting the second cylinder 802 and the driving plate 15 and guiding the driving plate 15 when the driving plate 15 is lifted or lowered is arranged between the second cylinder 802. The second guide component includes a movable plate 17 fixedly connected to the protruding end of the second cylinder 802, and guide columns 18 are arranged vertically downward at both ends. The ends of the two guide columns 18 away from the second cylinder 802 pass through the mounting plate 16 and are connected to the driving plate 15. An avoidance groove 19 is arranged on the mounting plate 16 for avoiding when the inflation tube 9 and the mounting block 7 rise.

[0037] Specific welding process: When the bottom 2 of the inner liner needs to be welded with the inner liner 1, the inner liner 1 and the bottom 2 of the inner liner can be placed in the bottom fixing mechanism 4 and the inner liner fixing mechanism 5 respectively. Then, the second cylinder 802 is started to make the second cylinder 802 push the driving plate 15 to move downward. When the driving plate 15 moves downward, the inflation tube 9 and the flow limiting plug 13 will move downward together. When the flow limiting plug 13 is partially inserted into the top of the inner liner 1, the first cylinder 801 can be started to make the first cylinder 801 drive the inflation tube 9 to gradually extend out of the flow limiting plug 13. At this time, the inflation tube 9 will gradually drop to the bottom of the inner liner 1. When the inflation tube 9 drops to the bottom of the inner liner 1, it can be used. The welding mechanism 6 welds the inner liner bottom 2 and the inner liner 1; after the inner liner bottom 2 and the inner liner 1 are welded, the first cylinder 801 can be used to drive the inflation tube 9 to rise, so that the inflation tube 9 gradually retracts into the flow limiting plug 13, and then the second cylinder 802 is started to drive the driving plate 15 to move upward, and when the driving plate 15 rises, it will drive the flow limiting plug 13 and the inflation tube 9 to move upward together. When the flow limiting plug 13 is away from the inner liner 1, the inner liner 1 can be removed from the machine. When removing the inner liner 1, the inflation tube 9 can be driven to rise by the first cylinder 801 first, thereby reducing the height that the machine needs to lift when removing the inner liner 1, thereby reducing the overall height of the machine.

[0038] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A nitrogen filling structure for welding the inner liner of a thermos cup, comprising a frame (3), on which a bottom fixing mechanism (4) for fixing the bottom (2) of the inner liner, an inner liner fixing mechanism (5) for fixing the inner liner (1), a welding mechanism (6) for welding the inner liner (1) to the inner liner bottom (2), and a filling pipe (9) for filling the inner liner (1) with nitrogen when the inner liner (1) is welded, characterized in that: A first lifting component for driving the air tube (9) to be lifted or lowered is also provided on the frame (3), and the first lifting component comprises a mounting block (7) for fixing the air tube (9) and a driving component for driving the mounting block (7) and the air tube (9) to be lifted or lowered together.

2. A nitrogen filling structure for welding the inner liner of a thermos cup according to claim 1, characterized in that: The driving component comprises a first cylinder (801) arranged vertically upward on the frame (3), and the protruding end of the first cylinder (801) is connected to the mounting block (7).

3. A nitrogen filling structure for welding the inner liner of a thermos cup according to claim 2, characterized in that: The mounting block (7) is also provided with a first guide component for guiding the inflation tube (9) when it is raised or lowered.

4. A nitrogen filling structure for welding the inner liner of a thermos cup according to claim 3, characterized in that: The first guide component comprises a guide sleeve (10) arranged outside the inflation tube (9); a fixing plate (11) is arranged at one end of the first cylinder (801) close to the mounting block (7); a connecting plate (12) partially extending outside the fixing plate (11) is arranged on one side of the fixing plate (11); and the two ends of the guide sleeve (10) are respectively connected to the connecting plate (12) and the mounting block (7).

5. The nitrogen filling structure for welding the inner liner of a thermos cup according to claim 1, characterized in that: A flow-limiting component is also provided on the frame (3) for reducing the speed at which nitrogen in the inner liner (1) leaks out of the inner liner (1) after the inflation pipe (9) inflates the inner liner (1). A second lifting component is provided on the frame (3) for driving the flow-limiting component to be lifted or lowered.

6. A nitrogen filling structure for welding the inner liner of a thermos cup according to claim 5, characterized in that: The flow-limiting component comprises a flow-limiting plug (13) which can be partially inserted into the inner container (1) after being lowered; a through hole (14) is provided in the middle of the flow-limiting plug (13) for the inflation tube (9) to pass through; the diameter of the through hole (14) is larger than the diameter of the inflation tube (9); a driving plate (15) is provided above the flow-limiting plug (13) and the two ends of the driving plate (15) are respectively fixed to the second lifting component and the flow-limiting plug (13); and the first lifting component is provided on the driving plate (15).

7. A nitrogen filling structure for welding the inner liner of a thermos cup according to claim 6, characterized in that: The second lifting component comprises a mounting plate (16) arranged above the first lifting component, a second cylinder (802) is arranged vertically downward on the mounting plate (16), and a second guide component is arranged between the second cylinder (802) and the driving plate (15) for connecting the two and guiding the driving plate (15) when the driving plate (15) is lifted or lowered.

8. The nitrogen filling structure for welding the inner liner of a thermos cup according to claim 7, characterized in that: The second guide component comprises a movable plate (17) fixedly connected to the protruding end of the second cylinder (802), and guide columns (18) are respectively arranged vertically downward at the two ends, and the ends of the two guide columns (18) away from the second cylinder (802) pass through the mounting plate (16) and are connected to the driving plate (15).

9. The nitrogen filling structure for welding the inner liner of a thermos cup according to claim 7, characterized in that: The mounting plate (16) is provided with an escape groove (19) for escaping when the inflation tube (9) and the mounting block (7) are raised.

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