A vacuumizing device for the interlayer of a vacuum cup

Abstract

The utility model relates to thermal cup vacuumizing equipment technical field discloses a kind of thermal cup interlayer vacuumizing device;Including negative pressure cylinder, fixed sleeve, scanning welding mechanism, driving mechanism, the hollow structure of negative pressure cylinder inside has sealed cavity, transparent sealing plate for closing sealed cavity is fixedly installed in one end of negative pressure cylinder, sealed cavity is communicated with air inlet valve and is used to the pre-extraction system and high extraction system for the vacuumizing of sealed cavity, fixed sleeve is used to place the thermal cup to be vacuumized, scanning welding mechanism is used to scan and laser welding to the air gap of the bottom of the thermal cup after vacuumizing.The utility model is good to the vacuumizing effect of thermal cup interlayer, and vacuumizing efficiency is high, and processing cycle is short, and it is not necessary to set, such as the air extraction tail pipe or glass bead in the bottom of thermal cup in prior art sealing component, can effectively improve the anti-collision performance of thermal cup, can effectively prolong the service life of thermal cup, and equipment cost is low, energy consumption is low, can effectively reduce production cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of vacuum equipment for thermos cups, specifically, it relates to a vacuum device for the interlayer of a thermos cup. Background Technology

[0002] Most commonly seen thermos cups are vacuum thermos cups. They achieve their heat preservation function by creating a vacuum between the inner liner and the outer shell to prevent heat loss. The heat preservation performance of a thermos cup is determined by the degree of vacuum in the interlayer. Existing vacuuming processes for thermos cups are generally divided into tailed vacuum processes and tailless vacuum processes.

[0003] One type of vacuum process involves reserving a copper suction tube at the bottom of the cup body. This tube is used to extract air from the interlayer of the thermos cup, achieving a certain vacuum level. Then, hydraulic pliers are used to deform and seal the copper tube, thus achieving a sealed state. However, the vacuum process with a tail cannot completely guarantee a tight seal at the microscopic level. After long-term use, gas will gradually enter the interlayer of the thermos cup, destroying the vacuum state. Furthermore, the suction tube is exposed at the bottom of the cup body and is easily damaged by impact, which can also lead to air intake, causing the thermos cup to lose its heat preservation performance.

[0004] Tailless vacuum technology involves making a small hole at the center of the bottom of the thermos and placing a sealing material such as glass beads inside. The thermos is then placed in a vacuum container, such as a vacuum brazing furnace, to create a vacuum and heat it to 500-700°C. This melts the sealing material and seals the evacuation hole, thus completing the evacuation and sealing process. However, tailless vacuum technology has high costs for sealing materials, expensive equipment, long processing cycles, and high energy consumption, resulting in high production costs. Furthermore, the glass beads used for sealing are easily broken by impact, causing air to enter the thermos's interlayer and lose its heat preservation performance. Utility Model Content

[0005] To solve or partially solve the problems existing in related technologies, this utility model provides a vacuum extraction device for the interlayer of a thermos cup, which aims to solve the problem that existing vacuum extraction equipment for thermos cups is prone to air intake in the interlayer after vacuuming, resulting in loss of heat preservation performance.

[0006] This application provides a vacuum extraction device for the interlayer of a thermos cup, comprising:

[0007] The frame has a support fixedly installed on it. At least two negative pressure cylinders are horizontally fixedly installed on the support. The negative pressure cylinders have a hollow internal structure with a sealed cavity. A transparent sealing plate for sealing the sealed cavity is fixedly installed at one end of the negative pressure cylinder. The sealed cavity is connected to an air inlet valve and a pre-evacuation system and a high-evacuation system for evacuating the sealed cavity.

[0008] The fixing sleeve is detachably and fixedly installed on one end of the negative pressure cylinder away from the transparent sealing plate. The fixing sleeve is used to place the thermos cup to be vacuumed.

[0009] The scanning welding mechanism is set at intervals on the side of the negative pressure cylinder where the transparent sealing plate is installed. The scanning welding mechanism is used to scan and laser weld the air extraction gap at the bottom of the vacuum cup after vacuuming through the transparent sealing plate.

[0010] The drive mechanism is used to mount the scanning welding mechanism and control its movement to complete the scanning and laser welding operations.

[0011] In one alternative embodiment, the negative pressure cylinder includes a sealing cylinder and a connecting cylinder. One end of the sealing cylinder is fixedly mounted on a bracket, and a transparent sealing plate is fixedly mounted on the end of the sealing cylinder away from the bracket. The connecting cylinder is located at the end of the sealing cylinder away from the transparent sealing plate and passes through the bracket. A fixing sleeve is detachably and fixedly mounted on the connecting cylinder.

[0012] In one alternative, the sealing cavity is arranged to extend through the sealing cylinder and the connecting cylinder along the axial direction of the negative pressure cylinder, and the portion of the sealing cavity located inside the sealing cylinder is a conical cavity structure that gradually expands towards the direction of the transparent sealing plate.

[0013] In one alternative, the fixing sleeve includes a sleeve and a sealing ring. The sleeve is a cylindrical structure that is hollow inside and open at both ends. The sleeve is detachably fixedly installed on the outer end of the connecting cylinder of the negative pressure cylinder, and the sealing ring is partially embedded inside the sleeve.

[0014] When the sleeve is fixed to the negative pressure cylinder, the fixed sleeve and the negative pressure cylinder press the sealing ring together. During the vacuuming process, the outer edge of the bottom of the thermos cup presses the outer end face of the part of the sealing ring located inside the sleeve.

[0015] In one alternative, the negative pressure cylinder is provided with a first negative pressure pipe and a second negative pressure pipe that communicate with the sealing cavity. The first negative pressure pipe is connected to the pre-extraction system, and the second negative pressure pipe is connected to the high-pressure extraction system.

[0016] The pre-evacuation system includes a pre-evacuation pump and a pre-evacuation valve. The pre-evacuation pump is connected to the first negative pressure pipe of the two negative pressure cylinders through a pre-evacuation pipe. A pre-evacuation valve is connected between the first negative pressure pipe of the two negative pressure cylinders and the pre-evacuation pipe. A first vacuum gauge is connected to the pre-evacuation pipe.

[0017] The high-pressure pumping system includes a forepump, a high-pressure pump, a high-pressure negative pressure chamber, and a high-pressure valve. The forepump is connected to the high-pressure pump through a high-pressure pipe. A second vacuum gauge is connected to the high-pressure pipe. A high-pressure negative pressure chamber is connected to the high-pressure pump. A high-pressure valve is connected between the second negative pressure pipes of the two negative pressure cylinders and the high-pressure negative pressure chamber. A third vacuum gauge is connected to the high-pressure negative pressure chamber.

[0018] In one alternative embodiment, the drive mechanism is a three-axis linear module consisting of a first linear module, a second linear module, and a third linear module installed sequentially.

[0019] The first linear module is used to control the scanning welding mechanism to move in the left and right direction, the second linear module is used to control the scanning welding mechanism to move in the up and down direction, and the third linear module is used to control the scanning welding mechanism to move in the front and back direction.

[0020] In one alternative embodiment, the scanning welding mechanism includes an industrial camera, a laser welding head, and a mounting bracket. The mounting bracket is fixedly mounted on the slider of the third linear module. The industrial camera and the laser welding head are fixedly mounted on the mounting bracket at intervals. The lens of the industrial camera is oriented parallel to the axis of the negative pressure cylinder and can illuminate the bottom of the thermos cup. The laser irradiation direction of the laser welding head is arranged at an angle to the axis of the negative pressure cylinder. The laser of the laser welding head can be tilted and irradiated at the bottom of the thermos cup through the transparent sealing plate.

[0021] In one alternative, a supplementary light source is installed on the mounting bracket corresponding to the lens of the industrial camera.

[0022] In one alternative, the angle between the laser irradiation direction of the laser welding head and the axis of the negative pressure cylinder is not less than 5°.

[0023] In one alternative configuration, the intake valve, pre-pump, pre-pump valve, first vacuum gauge, fore-pump, high-pressure pump, high-pressure valve, second vacuum gauge, third vacuum gauge, scanning welding mechanism, drive mechanism, and controller are electrically connected.

[0024] The beneficial effects of this utility model are:

[0025] This invention features a fixed sleeve for holding a thermos cup, a negative pressure cylinder, and a sealed cavity within the negative pressure cylinder sealed by a transparent sealing plate. A pre-vacuuming system and a high-vacuuming system connected to the sealed cavity can then be used to evacuate the sealed cavity and the thermos cup's interlayer. This results in a good vacuuming effect, high vacuuming efficiency, short processing cycle, simple operation, and high production efficiency for the thermos cup's interlayer.

[0026] This invention utilizes a scanning welding mechanism to scan and laser weld the vacuum gap at the bottom of a thermos cup under vacuum conditions. This provides excellent sealing of the vacuum gap, eliminating the need for sealing components such as vacuum tailpipes or glass beads found in existing technologies. This avoids the problem of air leakage and loss of insulation performance caused by collisions when using vacuum tailpipes or glass beads in existing technologies. It effectively improves the impact resistance of the thermos cup, extends its service life, and the equipment is low-cost and energy-efficient, thus reducing production costs.

[0027] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the vacuum extraction device for the interlayer of a thermos cup in one embodiment of this application;

[0030] Figure 2 This is a schematic diagram showing the connection between the negative pressure cylinder and the pre-extraction system and the high-pressure extraction system in one embodiment of this application;

[0031] Figure 3 This is a schematic diagram of the structure and installation of the scanning welding mechanism and the driving mechanism in one embodiment of this application;

[0032] Figure 4 This is a top cross-sectional view of the negative pressure cylinder and the fixed sleeve during vacuuming in one embodiment of this application, and a schematic diagram of the placement position of the thermos cup;

[0033] Figure 5 This is a schematic diagram of the shape of the air extraction gap at the bottom of the thermos cup shell in one embodiment of this application; wherein, Figure 5 (a) is a schematic diagram of a long, narrow air extraction slit. Figure 5 (b) is a schematic diagram of the arc-shaped air extraction gap;

[0034] Figure 6 This is a top sectional view of a negative pressure cylinder and a fixing sleeve, with the sealing cavity being a conical cavity structure, in one embodiment of this application.

[0035] The reference numerals in the figure are as follows: 1-negative pressure cylinder, 100-sealing cavity, 101-first negative pressure pipe, 102-second negative pressure pipe, 103-sealing cylinder, 104-connecting cylinder;

[0036] 2-Transparent sealing plate; 3-Intake valve;

[0037] 4-Pre-evacuation system, 401-Pre-evacuation pump, 402-Pre-evacuation valve, 403-Pre-evacuation tube, 404-First vacuum gauge;

[0038] 5-High-pressure pumping system, 501-Backing pump, 502-High-pressure pump, 503-High-pressure negative pressure chamber, 504-High-pressure valve, 505-High-pressure pipe, 506-Second vacuum gauge, 507-Third vacuum gauge;

[0039] 6-Fixing sleeve, 601-Sleeve, 602-Sealing ring;

[0040] 7-Scanning welding mechanism, 701-Industrial camera, 702-Laser welding head, 703-Mounting bracket, 704-Supplemental light source;

[0041] 8-Drive mechanism, 801-First linear module, 802-Second linear module, 803-Third linear module;

[0042] 9-Thermos cup; 901-Evacuum gap; 10-Rack; 11-Support. Detailed Implementation

[0043] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Existing vacuum insulated cup vacuuming equipment has several drawbacks. First, after vacuuming, the insulated cup is easily damaged by impact, causing air to enter the interlayer and lose its heat preservation performance. Second, the equipment is expensive, has a long processing cycle, high energy consumption, and high production costs.

[0049] To address the aforementioned problems, this application proposes improvements and innovations, including the following embodiments.

[0050] In one implementation, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, this application provides a vacuuming device for the interlayer of a thermos cup, including a frame 10, a bracket 11 fixedly installed on the frame 10, and two negative pressure cylinders 1 horizontally fixedly installed on the bracket 11. The negative pressure cylinder 1 has a hollow structure with a sealed cavity 100 inside. A transparent sealing plate 2 for sealing the sealed cavity 100 is fixedly installed at one end of the negative pressure cylinder 1. The sealed cavity 100 is connected to an air inlet valve 3 and a pre-vacuuming system 4 and a high-vacuuming system 5 for evacuating the sealed cavity 100. The pre-vacuuming system 4 and the high-vacuuming system 5 are arranged on the frame 10 so that the sealed cavity 100 and the interlayer of the thermos cup 9 can be evacuated through the pre-vacuuming system 4 and the high-vacuuming system 5. After the vacuuming is completed, the air inlet valve 3 can be opened to connect the sealed cavity 100 with the outside air, thereby releasing the pressure in the sealed cavity 100 so as to remove the thermos cup 9.

[0051] The device includes a fixing sleeve 6, which is detachably fixed to one end of the negative pressure cylinder 1 away from the transparent sealing plate 2. The fixing sleeve 6 is used to hold the thermos cup 9 to be vacuumed. This allows the fixing sleeve 6 to support the thermos cup 9 before and after vacuuming, facilitating accurate and rapid negative pressure adsorption during vacuuming and supporting the thermos cup 9 after vacuuming to prevent it from falling. To vacuum the interlayer of the thermos cup 9, at least one air extraction slit 901 is opened at the bottom of the thermos cup 9 during production. In this embodiment, two long, narrow air extraction slits 901 are opened at the bottom of the thermos cup 9, such as... Figure 5 As shown in (a); in specific applications, the extraction gap 901 can also be arc-shaped, such as... Figure 5 As shown in (b).

[0052] The system includes a scanning welding mechanism 7 and a driving mechanism 8. The scanning welding mechanism 7 is spaced apart on one side of the negative pressure cylinder 1 where the transparent sealing plate 2 is installed. The scanning welding mechanism 7 is used to scan and laser weld the air extraction gap 901 at the bottom of the vacuumed thermos cup 9 through the transparent sealing plate 2. The driving mechanism 8 is used to install the scanning welding mechanism 7 and control the movement of the scanning welding mechanism 7 to complete the scanning and laser welding operations. The driving mechanism 8 is installed on the top of the frame 10.

[0053] During vacuuming, the thermos cup 9 is placed inside the fixed sleeve 6, the air inlet valve 3 is closed, the bottom of the thermos cup 9 is sealed with the sealing cavity 100, and the interlayer of the thermos cup 9 is connected to the sealing cavity 100 through the air extraction gap 901. The pre-vacuuming system 4 and the high-vacuuming system 5 sequentially vacuum the sealing cavity 100 and the interlayer of the thermos cup 9.

[0054] Thus, by setting a fixed sleeve 6 for placing the thermos cup 9, and by setting a negative pressure cylinder 1 and sealing the sealed cavity 100 within the negative pressure cylinder 1 through a transparent sealing plate 2, the sealing cavity 100 and the interlayer of the thermos cup 9 can be vacuumed through the pre-vacuuming system 4 and the high-vacuuming system 5 connected to the sealing cavity 100. This results in a good vacuuming effect, high vacuuming efficiency, short processing cycle, simple operation, and high production efficiency for the interlayer of the thermos cup 9.

[0055] The scanning welding mechanism 7 scans and laser welds the air extraction gap 901 at the bottom of the thermos cup 9 under vacuum conditions, resulting in a good sealing effect on the air extraction gap 901. It eliminates the need for sealing components such as air extraction tail pipes or glass beads at the bottom of the thermos cup 9 as in the prior art. This avoids the problem that the thermos cup 9 is prone to air leakage due to impact when it is equipped with air extraction tail pipes or glass beads in the prior art, which can cause it to lose its heat preservation performance. It can effectively improve the impact resistance of the thermos cup 9 and effectively extend the service life of the thermos cup 9. Moreover, the equipment has low cost and low energy consumption, which can effectively reduce production costs.

[0056] In some embodiments, the negative pressure cylinder 1 includes a sealing cylinder 103 and a connecting cylinder 104. One end of the sealing cylinder 103 is fixedly mounted on the bracket 11, and the transparent sealing plate 2 is fixedly mounted on the end of the sealing cylinder 103 opposite to the bracket 11. The connecting cylinder 104 is located at the end of the sealing cylinder 103 opposite to the transparent sealing plate 2 and passes through the bracket 11. The fixing sleeve 6 is detachably fixedly mounted on the connecting cylinder 104. This allows for the horizontal fixed installation of the negative pressure cylinder 1 through the installation of the sealing cylinder 103 and the bracket 11. By making the fixing sleeve 6 detachable from the connecting cylinder 104, fixing sleeves 6 that can adapt to different specifications of thermos cups 9 can be prefabricated during the production process. Therefore, according to the specifications of different thermos cups 9, a suitable fixing sleeve 6 can be adaptively selected for placing the corresponding specification of thermos cup 9, thereby enabling the vacuuming operation of thermos cups 9 of different specifications.

[0057] In some embodiments, a high-temperature resistant coating can be applied to the inner wall of the connecting cylinder 104. Since the inner wall of the connecting cylinder 104 needs to be close to the laser of the laser welding head 702, the high-temperature resistant coating can protect the inner wall of the connecting cylinder 104. Specifically, the high-temperature resistant coating can be a metal oxide coating such as an alumina coating or a chromium oxide coating, or a metal ceramic coating such as an alumina-nickel coating or a chromium carbide-nickel-chromium coating.

[0058] In some implementations, such as Figure 6 As shown, the sealing cavity 100 is arranged axially through the sealing cylinder 103 and the connecting cylinder 104 along the negative pressure cylinder 1, and the portion of the sealing cavity 100 located inside the sealing cylinder 103 is a conical cavity structure that gradually expands towards the transparent sealing plate 2. In this way, on the one hand, the conical cavity provides an inclined incident space and a reflection space for the welding laser of the laser welding head 702, thereby effectively preventing the laser from burning the inner wall of the sealing cylinder 103; on the other hand, while ensuring that the laser will not burn the inner wall of the sealing cylinder 103, the conical cavity structure of the sealing cavity 100 effectively reduces the volume of the sealing cavity 100, thereby improving the vacuuming efficiency of the sealing cavity 100.

[0059] In some embodiments, the fixing sleeve 6 includes a sleeve 601 and a sealing ring 602. The sleeve 601 is a cylindrical structure with a hollow interior and open ends. The sleeve 601 is detachably fixedly installed on the outer end of the connecting cylinder 104 of the negative pressure cylinder 1. The sealing ring 602 is partially embedded inside the sleeve 601. When the sleeve 601 is fixed to the negative pressure cylinder 1, the fixing sleeve 6 and the negative pressure cylinder 1 press the sealing ring 602 together. During the vacuuming process, the outer edge of the bottom of the thermos cup 9 presses the outer end face of the portion of the sealing ring 602 located inside the sleeve 601. Thus, by setting a sealing ring 602 between the sleeve 601 and the connecting cylinder 104, on the one hand, the sealing ring 602 is pressed by the fixed sleeve 6 and the negative pressure cylinder 1, which can seal the connection gap between the sleeve 601 and the connecting cylinder 104. On the other hand, during the vacuuming process, the negative pressure adsorption effect generated by the vacuuming process causes the outer edge of the bottom of the thermos cup 9 to press the outer end face of the part of the sealing ring 602 inside the sleeve 601, which can seal the gap between the bottom of the thermos cup 9 and the fixed sleeve 6. This ensures that during the vacuuming process, the sealing cavity 100 of the negative pressure cylinder 1 and the interlayer of the thermos cup 9 are isolated from the outside world, thereby effectively ensuring the vacuuming effect of the interlayer of the thermos cup 9.

[0060] In this embodiment, the sleeve 601 of the fixed sleeve 6 is connected to the outer end of the connecting cylinder 104 of the negative pressure cylinder 1 by a thread. In this way, the threaded connection can form a better seal between the sleeve 601 and the connecting cylinder 104, which can further ensure the sealing performance between the fixed sleeve 6 and the negative pressure cylinder 1. Moreover, the threaded connection is convenient to disassemble and assemble, and the installation is stable. In specific applications, the installation between the fixed sleeve 6 and the negative pressure cylinder 1 can also be completed by using a screw to radially penetrate the sleeve 601 to the connecting cylinder 104.

[0061] Specifically, the inner diameter of the sleeve 601 is slightly larger than the outer diameter of the thermos cup 9. When the thermos cup 9 is placed on the sleeve 601, the mouth of the thermos cup 9 extends beyond the outer end of the fixing sleeve 6. In this way, the fixing sleeve 6 can support the thermos cup 9 before the vacuuming operation begins, so that when the vacuuming begins, the thermos cup 9 can be accurately and quickly adsorbed onto the outer end face of the part of the sealing ring 602 located inside the sleeve 601 under the action of the pre-vacuuming system 4 and the high-vacuuming system 5. At the same time, the fixing sleeve 6 can stabilize and support the thermos cup 9 after the vacuuming operation is completed, so as to prevent the thermos cup 9 from falling after the negative pressure adsorption is lost.

[0062] In some embodiments, the negative pressure cylinder 1 is provided with a first negative pressure pipe 101 and a second negative pressure pipe 102 communicating with the sealing cavity 100. The first negative pressure pipe 101 is connected to the pre-extraction system 4, and the second negative pressure pipe 102 is connected to the high-pressure extraction system 5. The pre-extraction system 4 includes a pre-extraction pump 401 and a pre-extraction valve 402. The pre-extraction pump 401 is connected to the first negative pressure pipes 101 of the two negative pressure cylinders 1 via a pre-extraction pipe 403. A pre-extraction valve 402 is connected between the first negative pressure pipes 101 and the pre-extraction pipe 403 of each of the two negative pressure cylinders 1. A first vacuum gauge 404 is connected to pipe 403; the high-pressure evacuation system 5 includes a pre-pump 501, a high-pressure evacuation pump 502, a high-pressure evacuation negative pressure chamber 503, and a high-pressure evacuation valve 504. The pre-pump 501 is connected to the high-pressure evacuation pump 502 via a high-pressure evacuation pipe 505, and a second vacuum gauge 506 is connected to the high-pressure evacuation pipe 505. The high-pressure evacuation negative pressure chamber 503 is connected to the high-pressure evacuation pump 502. A high-pressure evacuation valve 504 is connected between the second negative pressure pipe 102 of the two negative pressure cylinders 1 and the high-pressure evacuation negative pressure chamber 503, respectively. A third vacuum gauge 507 is connected to the high-pressure evacuation negative pressure chamber 503. Thus, when evacuating the sealed cavity 100 and the interlayer of the thermos cup 9, pre-evacuation and high-pressure evacuation can be performed sequentially through the pre-evacuation system 4 and the high-pressure evacuation system 5, respectively, so that the vacuum degree of the interlayer of the thermos cup 9 reaches the design requirements.

[0063] Specifically, when evacuating the thermos cup 9 on the fixed sleeve 6 corresponding to the negative pressure cylinder 1 on the left, the controller closes the air inlet valve 3 connected to the negative pressure cylinder 1, and simultaneously opens the pre-evacuation valve 402 and the high-evacuation valve 504 on the first negative pressure pipe 101 and the second negative pressure pipe 102 of the negative pressure cylinder 1, so that the pre-evacuation system 4 and the high-evacuation system 5 evacuate the sealed cavity 100 of the negative pressure cylinder 1 and the interlayer of the corresponding thermos cup 9; during this process, the controller controls the drive mechanism 8 to drive the scanning welding mechanism 7 to move. Move to the workstation corresponding to the negative pressure cylinder 1 on the right. Control the air inlet valve 3 connected to the negative pressure cylinder 1 on the right to keep it closed, the pre-extraction valve 402 closed, and the high-extraction valve 504 kept open. The scanning welding mechanism 7 scans and welds the vacuum gap 901 of the thermos cup 9 that has been evacuated on the fixed sleeve 6 corresponding to the negative pressure cylinder 1 on the right. After the welding is completed, close the high-extraction valve 504 through the controller and then open the air inlet valve 3 to release the thermos cup 9. The thermos cup 9 can then be manually removed. Subsequently, another insulated cup 9 to be vacuumed is placed on the fixed sleeve 6 corresponding to the negative pressure cylinder 1 on the right for the next round of vacuuming. At this time, the insulated cup 9 on the fixed sleeve 6 corresponding to the negative pressure cylinder 1 on the left has been vacuumed. The controller then controls the drive mechanism 8 to move the scanning welding mechanism 7 to the work position corresponding to the negative pressure cylinder 1 on the left. The scanning welding mechanism 7 scans and welds the vacuum gap 901 of the insulated cup 9 on the fixed sleeve 6 corresponding to the negative pressure cylinder 1 on the left. This process is repeated. In specific applications, multiple negative pressure cylinders 1 can also be set in one unit according to production needs.

[0064] In the pre-evacuation system 4 and the high-vacuation system 5, during vacuuming, the fore-pump 501 is started by the controller. When the second vacuum gauge 506 detects that the vacuum level in the high-vacuation tube 505 has reached the set value, the pre-evacuation pump 401 and the high-vacuation pump 502 are started by the controller, and the fore-pump 501, pre-evacuation pump 401, and high-vacuation pump 502 are kept running. At the same time, the pre-evacuation valve 402 and the high-vacuation valve 504 are opened by the controller to perform pre-vacuuming. When the first vacuum gauge 404 detects that the vacuum level in the sealed cavity 100... When the vacuum level reaches the pre-evacuation set value, the controller controls the high-evacuation valve 504 to remain open and the pre-evacuation valve 402 to remain closed for high-evacuation. When the third vacuum gauge 507 detects that the vacuum level in the sealed cavity 100 has reached the high-evacuation set value, the controller controls the air inlet valve 3 to remain closed and the high-evacuation valve 504 to remain open. Under the condition that the sealed cavity 100 and the interlayer of the thermos cup 9 are in a vacuum, the scanning and laser welding of the air extraction gap 901 at the bottom of the thermos cup 9 after vacuuming can be completed.

[0065] It should be noted that the first vacuum gauge 404 is installed on the pre-evacuation tube 403 and the third vacuum gauge 507 is installed on the high-pressure vacuum chamber 503. However, since the pre-evacuation tube 403, the high-pressure vacuum chamber 503 and the sealing cavity 100 are connected, the vacuum values ​​detected by the first vacuum gauge 404 and the third vacuum gauge 507 are the real-time vacuum values ​​of the sealing cavity 100 and the interlayer of the thermos cup 9.

[0066] In some embodiments, the drive mechanism 8 is a three-axis linear module consisting of a first linear module 801, a second linear module 802, and a third linear module 803 installed sequentially. Specifically, the first linear module 801 is horizontally fixedly installed on the top of the frame 10, the second linear module 802 is vertically fixedly installed on the slider of the first linear module 801, the third linear module 803 is horizontally fixedly installed on the slider of the second linear module 802, and the scanning welding mechanism 7 is fixedly installed on the slider of the third linear module 803.

[0067] The first linear module 801 controls the scanning welding mechanism 7 to move left and right, the second linear module 802 controls the scanning welding mechanism 7 to move up and down, and the third linear module 803 controls the scanning welding mechanism 7 to move forward and backward. Thus, the first linear module 801, the second linear module 802, and the third linear module 803 can directly drive the scanning welding mechanism 7 to move flexibly in space. This allows the scanning welding mechanism 7 to adapt its movements according to the position and shape of the suction gap 901 at the bottom of the thermos 9 under the drive of the driving mechanism 8, thereby completing the scanning and laser welding process of the suction gap 901 at the bottom of the thermos 9.

[0068] In some embodiments, the scanning welding mechanism 7 includes an industrial camera 701, a laser welding head 702, and a mounting bracket 703. The mounting bracket 703 is fixedly mounted on the slider of the third linear module 803, and the industrial camera 701 and the laser welding head 702 are fixedly mounted on the mounting bracket 703 at intervals.

[0069] The lens of the industrial camera 701 is oriented parallel to the axis of the negative pressure cylinder 1 and can illuminate the bottom of the thermos cup 9, so as to scan the position and shape of the air extraction gap 901 at the bottom of the thermos cup 9. In this embodiment, a supplementary light source 704 is installed on the mounting bracket 703 corresponding to the lens of the industrial camera 701, so that the supplementary light source 704 can illuminate the bottom of the thermos cup 9 through the transparent sealing plate 2, thereby enabling the industrial camera 701 to clearly and accurately obtain the position and shape information of the air extraction gap 901.

[0070] In this embodiment, the laser irradiation direction of the laser welding head 702 is arranged at an angle to the axis of the negative pressure cylinder 1, and the angle between the laser irradiation direction of the laser welding head 702 and the axis of the negative pressure cylinder 1 is not less than 5°. The laser of the laser welding head 702 can be tilted through the transparent sealing plate 2 to irradiate the bottom of the thermos cup 9. In this embodiment, the tilt angle of the laser irradiation of the laser welding head 702 is 8°. Thus, by making the laser of the laser welding head 702 irradiate the bottom of the thermos cup 9 in an tilted state, the laser of the laser welding head 702 has a certain incident angle and reflection angle, thereby effectively avoiding the laser reflection generated by direct laser irradiation from burning the laser welding head of the laser welding head 702. Correspondingly, the transparent sealing plate 2 is made of transparent materials with low refractive index such as high-purity quartz glass and borosilicate glass to reduce laser reflection loss, improve energy transmittance, and reduce laser beam refraction and deflection, thereby improving welding positioning accuracy.

[0071] In some embodiments, the air inlet valve 3, the pre-vacuum pump 401, the pre-vacuum valve 402, the first vacuum gauge 404, the fore-pump 501, the high-pressure pump 502, the high-pressure valve 504, the second vacuum gauge 506, the third vacuum gauge 507, the scanning welding mechanism 7, and the drive mechanism 8 are electrically connected to the controller. In this way, the controller can automatically control the start and stop of each component in this vacuum device and the opening and closing of each valve, thereby improving production efficiency.

[0072] Finally, it should be noted that although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention, all of which should be included within the protection scope of this application.

Claims

1. A vacuum pumping device for the interlayer of a thermos cup, characterized in that, include: A frame (10) is fixedly mounted on the frame (10), and at least two negative pressure cylinders (1) are horizontally fixedly mounted on the support (11). The negative pressure cylinder (1) has a hollow structure with a sealed cavity (100). A transparent sealing plate (2) for sealing the sealed cavity (100) is fixedly mounted at one end of the negative pressure cylinder (1). The sealed cavity (100) is connected to an air inlet valve (3) and a pre-vacuuming system (4) and a high-vacuuming system (5) for evacuating the sealed cavity (100). Fixing sleeve (6), which is detachably fixed to one end of the negative pressure cylinder (1) away from the transparent sealing plate (2), and is used to place the thermos cup (9) to be vacuumed. The scanning welding mechanism (7) is spaced apart on one side of the negative pressure cylinder (1) where the transparent sealing plate (2) is installed. The scanning welding mechanism (7) is used to scan and laser weld the air extraction gap (901) at the bottom of the vacuum cup (9) after vacuuming through the transparent sealing plate (2). A drive mechanism (8) is used to mount the scanning welding mechanism (7) and control the movement of the scanning welding mechanism (7) to complete the scanning and laser welding operations.

2. The vacuum pumping device for the interlayer of a thermos cup according to claim 1, characterized in that: The negative pressure cylinder (1) includes a sealing cylinder (103) and a connecting cylinder (104). One end of the sealing cylinder (103) is fixedly installed on the bracket (11). The transparent sealing plate (2) is fixedly installed on the end of the sealing cylinder (103) away from the bracket (11). The connecting cylinder (104) is located at the end of the sealing cylinder (103) away from the transparent sealing plate (2) and passes through the bracket (11). The fixing sleeve (6) is detachably fixedly installed on the connecting cylinder (104).

3. The vacuum pumping device for the interlayer of a thermos cup according to claim 2, characterized in that: The sealing cavity (100) is arranged to pass through the sealing cylinder (103) and the connecting cylinder (104) along the axial direction of the negative pressure cylinder (1), and the part of the sealing cavity (100) located inside the sealing cylinder (103) is a conical cavity structure that gradually expands in the direction of the transparent sealing plate (2).

4. The vacuum pumping device for the interlayer of a thermos cup according to claim 2, characterized in that: The fixing sleeve (6) includes a sleeve (601) and a sealing ring (602). The sleeve (601) is a cylindrical structure with a hollow interior and open ends. The sleeve (601) is detachably fixedly installed on the outer end of the connecting tube (104) of the negative pressure cylinder (1). The sealing ring (602) is partially embedded inside the sleeve (601). When the sleeve (601) is fixed to the negative pressure cylinder (1), the fixed sleeve (6) and the negative pressure cylinder (1) press the sealing ring (602). During the vacuuming process, the outer edge of the bottom of the thermos cup (9) presses the outer end face of the part of the sealing ring (602) located inside the sleeve (601).

5. The vacuum pumping device for the interlayer of a thermos cup according to claim 4, characterized in that: The negative pressure cylinder (1) is provided with a first negative pressure pipe (101) and a second negative pressure pipe (102) that are connected to the sealing cavity (100). The first negative pressure pipe (101) is connected to the pre-extraction system (4), and the second negative pressure pipe (102) is connected to the high-pressure extraction system (5). The pre-evacuation system (4) includes a pre-evacuation pump (401) and a pre-evacuation valve (402). The pre-evacuation pump (401) is connected to the first negative pressure pipe (101) of the two negative pressure cylinders (1) through a pre-evacuation pipe (403). A pre-evacuation valve (402) is connected between the first negative pressure pipe (101) of the two negative pressure cylinders (1) and the pre-evacuation pipe (403). A first vacuum gauge (404) is connected to the pre-evacuation pipe (403). The high-pressure pumping system (5) includes a pre-pump (501), a high-pressure pump (502), a high-pressure negative pressure chamber (503), and a high-pressure valve (504). The pre-pump (501) is connected to the high-pressure pump (502) through a high-pressure pipe (505). A second vacuum gauge (506) is connected to the high-pressure pipe (505). The high-pressure pump (502) is connected to the high-pressure negative pressure chamber (503). A high-pressure valve (504) is connected between the second negative pressure pipe (102) of the two negative pressure cylinders (1) and the high-pressure negative pressure chamber (503). A third vacuum gauge (507) is connected to the high-pressure negative pressure chamber (503).

6. The vacuum pumping device for the interlayer of a thermos cup according to claim 1, characterized in that: The drive mechanism (8) is a three-axis linear module consisting of a first linear module (801), a second linear module (802), and a third linear module (803) installed in sequence. The first linear module (801) is used to control the scanning welding mechanism (7) to move in the left and right direction, the second linear module (802) is used to control the scanning welding mechanism (7) to move in the up and down direction, and the third linear module (803) is used to control the scanning welding mechanism (7) to move in the front and back direction.

7. A vacuum pumping device for a thermos cup jacket according to claim 6, characterized in that: The scanning welding mechanism (7) includes an industrial camera (701), a laser welding head (702), and a mounting bracket (703). The mounting bracket (703) is fixedly mounted on the slider of the third linear module (803). The industrial camera (701) and the laser welding head (702) are fixedly mounted on the mounting bracket (703) at intervals. The lens of the industrial camera (701) is oriented parallel to the axis of the negative pressure cylinder (1) and can illuminate the bottom of the thermos cup (9). The laser irradiation direction of the laser welding head (702) is arranged at an angle to the axis of the negative pressure cylinder (1). The laser of the laser welding head (702) can be tilted through the transparent sealing plate (2) to irradiate the bottom of the thermos cup (9).

8. The vacuum pumping device for the interlayer of a thermos cup according to claim 7, characterized in that: A supplementary light source (704) is installed on the mounting bracket (703) corresponding to the lens of the industrial camera (701).

9. A vacuum pumping device for a thermos cup jacket according to claim 7, characterized in that: The laser irradiation direction of the laser welding head (702) and the axis of the negative pressure cylinder (1) are at an angle of not less than 5°.

10. A vacuum pumping device for a thermos cup jacket according to claim 5, characterized in that: The air intake valve (3), the pre-pump (401), the pre-pump valve (402), the first vacuum gauge (404), the fore-pump (501), the high-pump (502), the high-pump valve (504), the second vacuum gauge (506), the third vacuum gauge (507), the scanning welding mechanism (7), and the drive mechanism (8) are electrically connected to the controller.

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