CN111922544A - Cup body of vacuum cup with inner titanium and outer steel as well as processing equipment and processing method of cup body - Google Patents
Cup body of vacuum cup with inner titanium and outer steel as well as processing equipment and processing method of cup body Download PDFInfo
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- CN111922544A CN111922544A CN202010911641.8A CN202010911641A CN111922544A CN 111922544 A CN111922544 A CN 111922544A CN 202010911641 A CN202010911641 A CN 202010911641A CN 111922544 A CN111922544 A CN 111922544A
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- vacuum chamber
- bin
- shell
- sealing door
- cup body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Vacuum Packaging (AREA)
Abstract
The invention belongs to the technical field of vacuum cups, and particularly relates to an inner titanium and outer steel vacuum cup body which comprises a shell made of stainless steel, wherein an inner container made of titanium alloy is arranged in a cup body, the shell and the inner container are welded and sealed at a cup opening to form an integrated cup body, and vacuum pumping is performed between the shell and the inner container.
Description
Technical Field
The invention belongs to the technical field of vacuum cups, and particularly relates to a vacuum cup body made of inner titanium and outer steel, and processing equipment and a processing method thereof.
Background
The thermos cup is a common drinking vessel, is widely used by people, especially vacuum thermos cup, and it is effectual to keep warm, and the heat preservation time is long, and the thermos cup on the existing market is mostly made by stainless steel, and stainless steel material is corrosion-resistant, long service life, but stainless steel thermos cup can not hold beverage that teenagers like carbonated beverage, milk and fruit juice, and inconvenient user uses.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the cup body of the vacuum cup with the titanium inside and the steel outside, which has a simple structure and is convenient to produce.
The purpose of the invention is realized as follows:
the utility model provides an outer steel thermos cup body of interior titanium, includes the shell that the stainless steel was made, is provided with the inner bag that the titanium alloy was made in the cup body, and the cup of shell and inner bag welded seal formation integral type in the rim of a cup position, and evacuation between shell and the inner bag.
The utility model provides a processing equipment for processing outer steel thermos cup of interior titanium, includes the vacuum chamber, is provided with anchor clamps and the welding set of fixed shell and inner bag in the vacuum chamber, is connected with evacuating device and protective gas air inlet unit on the vacuum chamber.
A temperature adjusting device for adjusting temperature is arranged in the vacuum chamber.
The vacuum chamber is connected with a storage bin, the storage bin is arranged in a sealing mode, the storage bin is connected with the vacuum chamber through a connecting end and is provided with a first sealing door, and a second sealing door used for feeding or discharging is further arranged on the storage bin.
The feed bin comprises a feeding bin and a discharging bin, and the feeding bin and the discharging bin are both connected with a vacuumizing device and a protective gas inlet device.
Be provided with viewing aperture and glove port on the vacuum chamber, the glove port cover is equipped with the gloves that stretch into the vacuum chamber inside.
All be provided with vacuum pressure gauge on feed bin and the vacuum chamber.
The clamp is rotatably arranged in the vacuum chamber, a driving device for driving the clamp to rotate is arranged in the vacuum chamber, the clamp drives the shell and the inner container to rotate in the welding process of the shell and the inner container, and the welding device performs circumferential welding on the shell and the inner container.
A processing method of a cup body uses the processing equipment and comprises the following steps:
the method comprises the following steps: preparing, closing the first sealing door, vacuumizing the vacuum chamber to 1-0.1 atmospheric pressure by using a vacuumizing device, then filling protective gas into the vacuum chamber to 4-6 atmospheric pressures by using a protective gas inlet device, and adjusting the temperature in the vacuum chamber to 15-25 ℃ by using a temperature adjusting device;
step two: feeding, opening a second sealing door on the feeding bin, putting the shell and the inner container into the feeding bin, then closing the second sealing door, vacuumizing the feeding bin to 1-0.1 atmosphere by using a vacuumizing device, and then filling protective gas into the feeding bin by using a protective gas inlet device to balance the air pressure of the feeding bin and the vacuum chamber;
step three: taking materials, opening a first sealing door at the end part of the feeding bin, grabbing the shell and the inner container through gloves, fixing the shell and the inner container on a clamp, and closing the first sealing door at the end part of the feeding bin;
step four: welding, namely welding the shell and the inner container through a welding device;
step five: discharging, closing a first sealing door and a second sealing door on a discharging bin, vacuumizing the discharging bin to 1-0.1 atmosphere through a vacuumizing device, then filling protective gas into the discharging bin by using a protective gas inlet device to balance the air pressure of a feeding bin and a vacuum chamber, opening the first sealing door on the discharging bin, putting a welded shell and a welded inner container into the discharging bin, and then closing the first sealing door on the discharging bin;
step six: and (3) blanking, namely, extracting gas in the discharging bin by using a vacuumizing device to enable the pressure in the discharging bin to be 1 atmosphere, opening a second sealing door on the discharging bin, taking out the welded shell and the inner container, and closing the second sealing door on the discharging bin.
Step seven: and repeating the second step or the third step.
And step two, step three and step five, vacuumizing and filling protective gas for multiple times until no oxidation phenomenon occurs at the welding position in the debugging process.
Compared with the prior art, the invention has the outstanding and beneficial technical effects that:
1. the cup body of the vacuum cup with the inner titanium and the outer steel comprises a shell made of stainless steel, an inner container made of titanium alloy is arranged in the cup body, the shell and the inner container are welded and sealed at the cup opening to form an integrated cup body, and the shell and the inner container are vacuumized.
2. The processing equipment for the cup body comprises a vacuum chamber, wherein a clamp for fixing the shell and the inner container and a welding device are arranged in the vacuum chamber, the vacuum chamber is connected with a vacuumizing device and a protective gas inlet device, and the titanium alloy and the stainless steel are easy to oxidize in the welding process, so that the appearance and the performance of the vacuum cup are influenced; be provided with temperature regulation's temperature regulation apparatus in the vacuum chamber, temperature regulation apparatus be provided with do benefit to and avoid the temperature transform too big in the vacuum chamber to lead to production error great, perhaps influence the sealed of vacuum chamber.
3. According to the invention, the vacuum chamber is connected with the bin, the bin is sealed, the connecting end of the bin and the vacuum chamber is provided with the first sealing door, the bin is also provided with the second sealing door for loading or unloading, and the arrangement of the first sealing door and the second sealing door prevents oxygen in the cavity from entering the vacuum chamber in the loading and unloading process, so that the vacuum chamber can be kept in a low-oxygen or even anaerobic environment; the feed bin includes feeding storehouse and goes out the feed bin, and all is connected with evacuating device and protective gas air inlet unit on feeding storehouse and the play feed bin, gets rid of the oxygen that goes up the unloading in-process and get into the feed bin through evacuating device and protective gas air inlet unit, titanium alloy and stainless steel welding position oxidation when avoiding oxygen to lead to the welding in the feed bin.
4. The vacuum chamber is provided with the observation port and the glove port, the glove port is sleeved with the glove extending into the vacuum chamber, the structure is completed through manpower, complex mechanical arms are not used, flexible processing and production are facilitated, the clamp is rotatably arranged in the vacuum chamber, the vacuum chamber is internally provided with the driving device for driving the clamp to rotate, the clamp drives the shell and the inner container to rotate in the welding process of the shell and the inner container, the welding device performs circumferential welding on the shell and the inner container, and the shell and the inner container can be welded in the circumferential direction only by rotating furniture in the using process, so that welding and fixing are facilitated; all be provided with the vacuum pressure table on feed bin and the vacuum chamber, the user can in time observe the atmospheric pressure of stating feed bin and vacuum chamber, is convenient for in time discover unusually.
5. According to the processing method of the cup body, the shell and the inner container are prevented from being oxidized in the welding process in the processing process, the temperature in the vacuum chamber is controlled through the temperature adjusting device, the temperature in the vacuum chamber is prevented from being too high, production errors caused by expansion with heat and contraction with cold are avoided, and the rejection rate in the processing process is reduced.
Drawings
FIG. 1 is a cross-sectional view of a vacuum cup of the present invention;
FIG. 2 is a schematic view of a cup body processing apparatus according to the present invention;
fig. 3 is a flow chart of a cup body processing method of the present invention.
The reference numbers in the figures mean: 1-a housing; 2-inner container; 3-a vacuum chamber; 4-a storage bin; 5-vacuum pressure gauge; 6-a welding device; 7-a clamp; 31-access hole; 32-glove port; 33-a viewing port; 34-a temperature regulating device; 41-a first sealing door; 42-a second sealing door; 71-a drive motor; 81-vacuum pumping device; 82-protective gas inlet means; 83-solenoid valve.
Detailed Description
The invention is further described in the following with specific embodiments in conjunction with the accompanying drawings:
see fig. 1-3 shown, an outer steel thermos cup body of interior titanium, shell 1 including the stainless steel is made, be provided with the inner bag 2 that the titanium alloy made in the cup body, shell 1 and inner bag 2 are at the cup of rim of a cup position welded seal formation integral type, and the evacuation between shell 1 and the inner bag 2, moreover, the steam generator is simple in structure, and convenient production, this structure is compared in the thermos cup low in production cost that pure titanium alloy made, and because inner bag 2 makes for the titanium alloy and can hold carbonated beverage, milk and fruit juice, the person of facilitating the use uses.
A processing device for processing a vacuum cup body of an inner titanium and outer steel comprises a vacuum chamber 3, wherein a clamp 7 for fixing a shell 1 and an inner container 2 and a welding device are arranged in the vacuum chamber 3, a vacuumizing device 81 and a protective gas inlet device 82 are connected to the vacuum chamber 3, and the appearance and the performance of the vacuum cup are affected due to the fact that titanium alloy and stainless steel are easy to oxidize in the welding process.
When the cup body processing equipment is used, the vacuum chamber 3 is firstly vacuumized to 1-0.1 atmospheric pressure by the vacuumizing device 81, then the protective gas is filled into the vacuum chamber 3 to 4-6 atmospheric pressures by the protective gas inlet device 82, then the vacuumizing and the filling of the protective gas are repeated for many times, and the oxygen content in the vacuum chamber 3 is reduced, in the embodiment, the vacuumizing device 81 is preferably used for vacuumizing the vacuum chamber 3 to 0.5 atmospheric pressure, and the protective gas inlet device 82 is preferably used for filling the protective gas into the vacuum chamber 3 to 5 atmospheric pressures.
Be provided with temperature regulation's temperature regulation apparatus 34 in vacuum chamber 3, because vacuum chamber 3 is sealed environment, can release heat in a large number among the welding process, and the temperature can be very high among the long-time back vacuum chamber 3 that uses, and temperature regulation apparatus 34 is provided with and does benefit to and avoids that temperature conversion is too big in vacuum chamber 3 to lead to production error great, perhaps influence vacuum chamber 3's sealed, temperature regulation apparatus 34 is the air conditioner.
Be connected with feed bin 4 on the vacuum chamber 3, feed bin 4 is sealed to be set up, and feed bin 4 is provided with first sealing door 41 with 3 links of vacuum chamber, and still is provided with the second sealing door 42 that is used for material loading or unloading on the feed bin 4, and the setting of first sealing door 41 and second sealing door 42 is avoided the oxygen in the unloading in-process cavity to get into vacuum chamber 3, is favorable to making vacuum chamber 3 keep oxygen-less or even anaerobic environment.
In this embodiment the feed bin 4 includes feed bin 4 and play feed bin 4, and all be connected with evacuating device 81 and protective gas air inlet unit 82 on feed bin 4 and the play feed bin 4, get rid of the oxygen that goes up in the unloading in-process and get into feed bin 4 through evacuating device 81 and protective gas air inlet unit 82, titanium alloy and stainless steel welding position oxidation when avoiding oxygen to lead to the welding in the feed bin 4, evacuating device 81 is to 0.5 atmospheric pressure in with feed bin 4 in this embodiment, protective gas air inlet unit 82 fills protective gas to 5 atmospheric pressures in to feed bin 4, reduce the oxygen content in the feed bin 4 several times repeatedly.
Preferably, all be provided with vacuum pressure gauge 65 on feed bin 4 and the vacuum chamber 3, the user can in time observe the atmospheric pressure of stating feed bin 4 and vacuum chamber 3, is convenient for in time discover unusually, and is convenient for open of first sealing door 41 and second sealing door 42.
Be provided with viewing aperture 33 and glove port 32 on vacuum chamber 3, glove port 32 cover is equipped with the gloves that stretch into the inside of vacuum chamber 3, and this structure is accomplished through the manpower, and manipulator complicated does not need, and convenient nimble processing production, in the course of working, user's hand penetrates and snatchs shell 1 and inner bag 2 in the gloves to observe through viewing aperture 33.
The fixture 7 is rotatably arranged in the vacuum chamber 3, the driving fixture 7 is provided with a driving motor 71 for driving the fixture 7 to rotate in the vacuum chamber 3, the driving motor 71 is connected with the fixture 7, the fixture 7 drives the shell 1 and the inner container 2 to rotate in the welding process of the shell 1 and the inner container 2, the welding device performs circumferential welding on the shell 1 and the inner container 2, and only the furniture is required to rotate in the use process to complete the welding of the shell 1 and the inner container 2 in the circumferential direction, so that the welding and the fixing are facilitated.
In this embodiment, the vacuum chamber 3 is further provided with an access opening 31 for facilitating inspection and maintenance of the devices inside the vacuum chamber 1.
A processing method of a cup body uses the processing equipment and comprises the following steps:
the method comprises the following steps: preparing, closing the first sealing door 41, vacuumizing the vacuum chamber 3 to 1-0.1 atmospheric pressure through the vacuumizing device 81, then filling protective gas into the vacuum chamber 3 to 4-6 atmospheric pressures through the protective gas inlet device 82, and adjusting the temperature in the vacuum chamber 3 to 15-25 ℃ through the temperature adjusting device 34;
step two: feeding, opening a second sealing door 42 on the feeding bin 4, putting the shell 1 and the liner 2 into the feeding bin 4, then closing the second sealing door 42, vacuumizing the feeding bin 4 to 1-0.1 atmosphere through a vacuumizing device 81, and then filling protective gas into the feeding bin 4 by using a protective gas inlet device 82 to balance the air pressure of the feeding bin 4 and the vacuum chamber 3;
step three: taking materials, opening a first sealing door 41 at the end part of the feeding bin 4, grabbing the shell 1 and the liner 2 through gloves, fixing the shell 1 and the liner 2 on a clamp 7, and closing the first sealing door 41 at the end part of the feeding bin 4;
step four: welding, namely welding the shell 1 and the inner container 2 by a welding device;
step five: discharging, closing a first sealing door 41 and a second sealing door 42 on a discharging bin 4, vacuumizing the discharging bin 4 to 1-0.1 atmospheric pressure through a vacuumizing device 81, then filling protective gas into the discharging bin 4 by using a protective gas inlet device 82, balancing the air pressure of the feeding bin 4 and the vacuum chamber 3, opening the first sealing door 41 on the discharging bin 4, placing the welded shell 1 and the welded liner 2 into the discharging bin 4, and then closing the first sealing door 41 on the discharging bin 4;
step six: and (3) blanking, namely extracting gas in the bin 4 by using the vacuumizing device 81 to enable the pressure in the bin 4 to reach 1 atmosphere, opening the second sealing door 42 on the bin 4, taking out the welded shell 1 and the welded liner 2, and closing the second sealing door 42 on the bin 4.
Step seven: and repeating the second step or the third step.
And step two, step three and step five, vacuumizing and filling protective gas for multiple times until no oxidation phenomenon occurs at the welding position in the debugging process.
A plurality of groups of shells 1 and inner containers 2 which are not welded can be placed in the feeding process in the second step, and if the shells 1 and the inner containers 2 which are not welded in the feeding bin 4 do not exist after each blanking is finished, the feeding in the second step is carried out; and if the shell 1 and the inner container 2 which are not welded are arranged in the feeding bin 4, taking materials in the third step.
And in the sixth step, the materials can be discharged together after a plurality of groups of welded shells 1 and welded inner containers 2 are stored in the material discharging bin 4, if the number of the welded shells 1 and the welded inner containers 2 in the material discharging bin 4 is small, the transition from the fifth step to the seventh step can be directly realized, the welding position needs to be observed during each material discharging, and the first step needs to be carried out again if the oxidation phenomenon occurs.
The temperature adjusting device 34 is operated all the time from step one to step seven, and the temperature in the vacuum chamber 3 is controlled to 15-25 ℃.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides an outer steel thermos cup body of interior titanium which characterized in that: the cup comprises a shell (1) made of stainless steel, an inner container (2) made of titanium alloy is arranged in a cup body, the shell (1) and the inner container (2) are welded and sealed at a cup opening to form an integrated cup body, and the shell (1) and the inner container (2) are vacuumized.
2. The utility model provides a processing equipment for processing outer steel thermos cup body of interior titanium which characterized in that: the vacuum welding device comprises a vacuum chamber (3), wherein a clamp (7) for fixing a shell (1) and a liner (2) and a welding device (6) are arranged in the vacuum chamber (3), and a vacuumizing device (81) and a protective gas inlet device (83) are connected to the vacuum chamber (3).
3. The processing equipment for processing the cup body of the titanium-inside and steel-outside vacuum cup as claimed in claim 2, wherein: a temperature adjusting device (34) for adjusting the temperature is arranged in the vacuum chamber (3).
4. The processing equipment for processing the cup body of the vacuum cup made of the internal titanium and the external steel as claimed in claim 2 or 3, wherein: be connected with feed bin (4) on vacuum chamber (3), feed bin (4) seal setting, feed bin (4) are provided with first sealing door (41) with vacuum chamber (3) link, and still are provided with second sealing door (41) that are used for material loading or unloading on feed bin (4).
5. The processing equipment for processing the cup body of the inner titanium and outer steel vacuum cup according to claim 4, characterized in that: the feed bin (4) comprises a feeding bin (4) and a discharging bin (4), and the feeding bin (4) and the discharging bin (4) are both connected with a vacuumizing device (81) and a protective gas inlet device (83).
6. A processing device for processing a cup body of an inner titanium and outer steel vacuum cup according to claim 2, 3 or 5, characterized in that: the vacuum chamber (3) is provided with an observation port (33) and a glove port (32), and the glove port (32) is sleeved with a glove extending into the vacuum chamber (3).
7. The processing equipment for processing the cup body of the inner titanium and outer steel vacuum cup according to claim 6, characterized in that: and the stock bin (4) and the vacuum chamber (3) are both provided with a vacuum pressure gauge (5).
8. The processing equipment for processing the cup body of the titanium-inside steel vacuum cup as claimed in claim 2, 3, 5 or 7, wherein: clamp (7) rotate and set up in vacuum chamber (3), and be provided with drive fixture (7) pivoted drive arrangement in vacuum chamber (3), and in shell (1) and inner bag (2) welding process, clamp (7) drive shell (1) and inner bag (2) and rotate, and welding set (6) carry out circumference welding to shell (1) and inner bag (2).
9. A method for processing a cup body, which uses the processing apparatus of claims 2 to 8, and comprises the steps of:
the method comprises the following steps: preparing, closing a first sealing door (41), vacuumizing the vacuum chamber (3) to 1-0.1 atmospheric pressure through a vacuumizing device (81), then filling protective gas into the vacuum chamber (3) to 4-6 atmospheric pressures through a protective gas inlet device (83), and adjusting the temperature in the vacuum chamber (3) to 15-25 ℃ through a temperature adjusting device (34);
step two: feeding, opening a second sealing door (41) on the feeding bin (4), putting the shell (1) and the liner (2) into the feeding bin (4), then closing the second sealing door (41), vacuumizing the feeding bin (4) to 1-0.1 atmosphere through a vacuumizing device (81), and then filling protective gas into the feeding bin (4) by using a protective gas inlet device (83) to balance the air pressure of the feeding bin (4) and the vacuum chamber (3);
step three: taking materials, opening a first sealing door (41) at the end part of the feeding bin (4), grabbing the shell (1) and the liner (2) through gloves, fixing the shell (1) and the liner (2) on a clamp (7), and closing the first sealing door (41) at the end part of the feeding bin (4);
step four: welding, namely welding the shell (1) and the inner container (2) by a welding device (6);
step five: discharging, closing a first sealing door (41) and a second sealing door (41) on a discharging bin (4), vacuumizing the discharging bin (4) to 1-0.1 atmospheric pressure through a vacuumizing device (81), then filling protective gas into the discharging bin (4) by using a protective gas inlet device (83), balancing the air pressure of the feeding bin (4) and the vacuum chamber (3), opening the first sealing door (41) on the discharging bin (4), putting the welded shell (1) and the welded liner (2) into the discharging bin (4), and then closing the first sealing door (41) on the discharging bin (4);
step six: and (3) blanking, namely, extracting gas in the discharging bin (4) by using a vacuumizing device (81) to enable the pressure in the discharging bin (4) to reach 1 atmosphere, opening a second sealing door (41) on the discharging bin (4), taking out the welded shell (1) and the welded liner (2), and closing the second sealing door (41) on the discharging bin (4).
Step seven: and repeating the second step or the third step.
10. And step two, step three and step five, vacuumizing and filling protective gas for multiple times until no oxidation phenomenon occurs at the welding position in the debugging process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010911641.8A CN111922544A (en) | 2020-09-02 | 2020-09-02 | Cup body of vacuum cup with inner titanium and outer steel as well as processing equipment and processing method of cup body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010911641.8A CN111922544A (en) | 2020-09-02 | 2020-09-02 | Cup body of vacuum cup with inner titanium and outer steel as well as processing equipment and processing method of cup body |
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| CN111922544A true CN111922544A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010911641.8A Pending CN111922544A (en) | 2020-09-02 | 2020-09-02 | Cup body of vacuum cup with inner titanium and outer steel as well as processing equipment and processing method of cup body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935717A (en) * | 2021-01-30 | 2021-06-11 | 浙江迪迈工贸有限公司 | Manufacturing process of vacuum cup with inner titanium and outer steel |
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2020
- 2020-09-02 CN CN202010911641.8A patent/CN111922544A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935717A (en) * | 2021-01-30 | 2021-06-11 | 浙江迪迈工贸有限公司 | Manufacturing process of vacuum cup with inner titanium and outer steel |
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